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 void statement_to_firm(statement_t *statement);
832 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
834 static ir_node *expression_to_addr(const expression_t *expression);
835 static void create_condition_evaluation(const expression_t *expression,
837 ir_node *false_block);
839 static void set_value_for_expression(const expression_t *expression,
842 if(expression->type == EXPR_REFERENCE) {
843 reference_expression_t *ref = (reference_expression_t*) expression;
845 declaration_t *declaration = ref->declaration;
846 assert(declaration->declaration_type != DECLARATION_TYPE_UNKNOWN);
847 if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
848 set_value(declaration->v.value_number, value);
853 dbg_info *dbgi = get_dbg_info(&expression->source_position);
854 ir_node *addr = expression_to_addr(expression);
855 assert(get_irn_mode(value) == get_ir_mode(expression->datatype));
856 ir_node *memory = get_store();
857 ir_node *store = new_d_Store(dbgi, memory, addr, value);
858 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
859 set_store(store_mem);
862 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
864 ir_mode *value_mode = get_irn_mode(value);
866 if (value_mode == dest_mode || is_Bad(value))
869 if(dest_mode == mode_b) {
870 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
871 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
872 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
876 return new_d_Conv(dbgi, value, dest_mode);
879 static ir_node *create_incdec(const unary_expression_t *expression)
881 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
882 type_t *type = expression->expression.datatype;
883 ir_mode *mode = get_ir_mode(type);
884 expression_t *value = expression->value;
886 ir_node *value_node = expression_to_firm(value);
889 if(type->type == TYPE_POINTER) {
890 pointer_type_t *pointer_type = (pointer_type_t*) type;
891 unsigned elem_size = get_type_size(pointer_type->points_to);
892 offset = new_Const_long(mode_Is, elem_size);
894 assert(is_type_arithmetic(type));
895 offset = new_Const(mode, get_mode_one(mode));
898 switch(expression->type) {
899 case UNEXPR_POSTFIX_INCREMENT: {
900 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
901 set_value_for_expression(value, new_value);
904 case UNEXPR_POSTFIX_DECREMENT: {
905 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
906 set_value_for_expression(value, new_value);
909 case UNEXPR_PREFIX_INCREMENT: {
910 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
911 set_value_for_expression(value, new_value);
914 case UNEXPR_PREFIX_DECREMENT: {
915 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
916 set_value_for_expression(value, new_value);
920 panic("no incdec expr in create_incdec");
925 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
927 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
928 type_t *type = skip_typeref(expression->expression.datatype);
930 if(expression->type == UNEXPR_TAKE_ADDRESS)
931 return expression_to_addr(expression->value);
933 const expression_t *value = expression->value;
934 ir_node *value_node = expression_to_firm(value);
936 switch(expression->type) {
938 return new_d_Minus(dbgi, value_node, get_ir_mode(type));
941 case UNEXPR_BITWISE_NEGATE:
942 return new_d_Not(dbgi, value_node, get_ir_mode(type));
944 if(get_irn_mode(value_node) != mode_b) {
945 value_node = create_conv(dbgi, value_node, mode_b);
947 value_node = new_d_Not(dbgi, value_node, mode_b);
948 ir_mode *const mode = get_ir_mode(type);
950 value_node = create_conv(dbgi, value_node, mode);
954 case UNEXPR_DEREFERENCE:
955 return deref_address(type, value_node, dbgi);
956 case UNEXPR_POSTFIX_INCREMENT:
957 case UNEXPR_POSTFIX_DECREMENT:
958 case UNEXPR_PREFIX_INCREMENT:
959 case UNEXPR_PREFIX_DECREMENT:
960 return create_incdec(expression);
962 return create_conv(dbgi, value_node, get_ir_mode(type));
964 case UNEXPR_TAKE_ADDRESS:
968 panic("invalid UNEXPR type found");
971 static long get_pnc(binary_expression_type_t type)
974 case BINEXPR_EQUAL: return pn_Cmp_Eq;
975 case BINEXPR_NOTEQUAL: return pn_Cmp_Lg;
976 case BINEXPR_LESS: return pn_Cmp_Lt;
977 case BINEXPR_LESSEQUAL: return pn_Cmp_Le;
978 case BINEXPR_GREATER: return pn_Cmp_Gt;
979 case BINEXPR_GREATEREQUAL: return pn_Cmp_Ge;
983 panic("trying to get pn_Cmp from non-comparison binexpr type");
986 static ir_node *create_lazy_op(const binary_expression_t *expression)
988 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
989 type_t *type = expression->expression.datatype;
990 ir_mode *mode = get_ir_mode(type);
992 ir_node *cur_block = get_cur_block();
994 ir_node *one_block = new_immBlock();
995 ir_node *one = new_Const(mode, get_mode_one(mode));
996 ir_node *jmp_one = new_d_Jmp(dbgi);
998 ir_node *zero_block = new_immBlock();
999 ir_node *zero = new_Const(mode, get_mode_null(mode));
1000 ir_node *jmp_zero = new_d_Jmp(dbgi);
1002 set_cur_block(cur_block);
1003 create_condition_evaluation((const expression_t*) expression,
1004 one_block, zero_block);
1005 mature_immBlock(one_block);
1006 mature_immBlock(zero_block);
1008 ir_node *common_block = new_immBlock();
1009 add_immBlock_pred(common_block, jmp_one);
1010 add_immBlock_pred(common_block, jmp_zero);
1011 mature_immBlock(common_block);
1013 ir_node *in[2] = { one, zero };
1014 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1019 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
1020 ir_node *right, ir_mode *mode);
1022 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
1023 create_arithmetic_func func)
1025 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1026 ir_node *left = expression_to_firm(expression->left);
1027 ir_node *right = expression_to_firm(expression->right);
1028 type_t *type = expression->right->datatype;
1029 /* be careful with the modes, because in arithmetic assign nodes only
1030 * the right operand has the mode of the arithmetic already */
1031 ir_mode *mode = get_ir_mode(type);
1032 left = create_conv(dbgi, left, mode);
1033 ir_node *res = func(dbgi, left, right, mode);
1038 static ir_node *pointer_arithmetic(ir_node *const pointer,
1041 dbg_info *const dbgi,
1042 const create_arithmetic_func func)
1044 pointer_type_t *const pointer_type = (pointer_type_t*)type;
1045 type_t *const points_to = pointer_type->points_to;
1046 const unsigned elem_size = get_type_size(points_to);
1048 assert(elem_size >= 1);
1049 if (elem_size > 1) {
1050 integer = create_conv(dbgi, integer, mode_Is);
1051 ir_node *const cnst = new_Const_long(mode_Is, (long)elem_size);
1052 ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_Is);
1056 ir_mode *const mode = get_ir_mode(type);
1057 return func(dbgi, pointer, integer, mode);
1060 static ir_node *create_arithmetic_assign_binop(
1061 const binary_expression_t *expression, create_arithmetic_func func)
1063 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1064 type_t *const type = expression->expression.datatype;
1067 if (type->type == TYPE_POINTER) {
1068 ir_node *const pointer = expression_to_firm(expression->left);
1069 ir_node * integer = expression_to_firm(expression->right);
1070 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
1072 value = create_arithmetic_binop(expression, func);
1075 ir_mode *const mode = get_ir_mode(type);
1076 value = create_conv(dbgi, value, mode);
1077 set_value_for_expression(expression->left, value);
1082 static ir_node *create_add(const binary_expression_t *expression)
1084 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1085 ir_node *left = expression_to_firm(expression->left);
1086 ir_node *right = expression_to_firm(expression->right);
1087 type_t *type = expression->expression.datatype;
1089 expression_t *expr_left = expression->left;
1090 expression_t *expr_right = expression->right;
1091 type_t *type_left = skip_typeref(expr_left->datatype);
1092 type_t *type_right = skip_typeref(expr_right->datatype);
1094 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1095 ir_mode *const mode = get_ir_mode(type);
1096 return new_d_Add(dbgi, left, right, mode);
1099 if (type_left->type == TYPE_POINTER || type_left->type == TYPE_ARRAY) {
1100 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
1102 assert(type_right->type == TYPE_POINTER || type_right->type == TYPE_ARRAY);
1103 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
1107 static ir_node *create_sub(const binary_expression_t *expression)
1109 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1110 expression_t *const expr_left = expression->left;
1111 expression_t *const expr_right = expression->right;
1112 ir_node *const left = expression_to_firm(expr_left);
1113 ir_node *const right = expression_to_firm(expr_right);
1114 type_t *const type = expression->expression.datatype;
1115 type_t *const type_left = skip_typeref(expr_left->datatype);
1116 type_t *const type_right = skip_typeref(expr_right->datatype);
1118 if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1119 ir_mode *const mode = get_ir_mode(type);
1120 return new_d_Sub(dbgi, left, right, mode);
1121 } else if (type_left->type == TYPE_POINTER && type_right->type == TYPE_POINTER) {
1122 const pointer_type_t *const ptr_type = (const pointer_type_t*)type_left;
1123 const unsigned elem_size = get_type_size(ptr_type->points_to);
1124 ir_mode *const mode = get_ir_mode(type);
1125 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
1126 ir_node *const cnst = new_Const_long(mode_Is, (long)elem_size);
1127 ir_node *const no_mem = new_NoMem();
1128 ir_node *const div = new_d_Div(dbgi, no_mem, sub, cnst, mode,
1129 op_pin_state_floats);
1130 return new_d_Proj(dbgi, div, mode, pn_Div_res);
1133 assert(type_left->type == TYPE_POINTER);
1134 return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
1137 static ir_node *create_shift(const binary_expression_t *expression)
1139 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1140 ir_node *left = expression_to_firm(expression->left);
1141 ir_node *right = expression_to_firm(expression->right);
1142 type_t *type = expression->expression.datatype;
1143 ir_mode *mode = get_ir_mode(type);
1145 /* firm always wants the shift count to be unsigned */
1146 right = create_conv(dbgi, right, mode_Iu);
1150 switch(expression->type) {
1151 case BINEXPR_SHIFTLEFT_ASSIGN:
1152 case BINEXPR_SHIFTLEFT:
1153 res = new_d_Shl(dbgi, left, right, mode);
1155 case BINEXPR_SHIFTRIGHT_ASSIGN:
1156 case BINEXPR_SHIFTRIGHT: {
1157 expression_t *expr_left = expression->left;
1158 type_t *type_left = skip_typeref(expr_left->datatype);
1160 if(is_type_signed(type_left)) {
1161 res = new_d_Shrs(dbgi, left, right, mode);
1163 res = new_d_Shr(dbgi, left, right, mode);
1168 panic("create shift op called for non-shift op");
1175 static ir_node *create_divmod(const binary_expression_t *expression)
1177 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1178 ir_node *left = expression_to_firm(expression->left);
1179 ir_node *right = expression_to_firm(expression->right);
1180 ir_node *pin = new_Pin(new_NoMem());
1181 /* be careful with the modes, because in arithmetic assign nodes only
1182 * the right operand has the mode of the arithmetic already */
1183 type_t *type = expression->right->datatype;
1184 ir_mode *mode = get_ir_mode(type);
1185 left = create_conv(dbgi, left, mode);
1189 switch (expression->type) {
1191 case BINEXPR_DIV_ASSIGN:
1192 if(mode_is_float(mode)) {
1193 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
1194 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
1196 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
1197 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
1202 case BINEXPR_MOD_ASSIGN:
1203 assert(!mode_is_float(mode));
1204 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
1205 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
1208 default: panic("unexpected binary expression type in create_divmod()");
1214 static ir_node *create_arithmetic_assign_divmod(
1215 const binary_expression_t *expression)
1217 ir_node * value = create_divmod(expression);
1218 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1219 type_t *const type = expression->expression.datatype;
1220 ir_mode *const mode = get_ir_mode(type);
1222 assert(type->type != TYPE_POINTER);
1224 value = create_conv(dbgi, value, mode);
1225 set_value_for_expression(expression->left, value);
1230 static ir_node *create_arithmetic_assign_shift(
1231 const binary_expression_t *expression)
1233 ir_node * value = create_shift(expression);
1234 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1235 type_t *const type = expression->expression.datatype;
1236 ir_mode *const mode = get_ir_mode(type);
1238 value = create_conv(dbgi, value, mode);
1239 set_value_for_expression(expression->left, value);
1244 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
1246 binary_expression_type_t type = expression->type;
1249 case BINEXPR_NOTEQUAL:
1251 case BINEXPR_LESSEQUAL:
1252 case BINEXPR_GREATER:
1253 case BINEXPR_GREATEREQUAL: {
1254 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1255 ir_node *left = expression_to_firm(expression->left);
1256 ir_node *right = expression_to_firm(expression->right);
1257 ir_node *cmp = new_d_Cmp(dbgi, left, right);
1258 long pnc = get_pnc(type);
1259 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
1262 case BINEXPR_ASSIGN: {
1263 ir_node *right = expression_to_firm(expression->right);
1264 set_value_for_expression(expression->left, right);
1268 return create_add(expression);
1270 return create_sub(expression);
1272 return create_arithmetic_binop(expression, new_d_Mul);
1273 case BINEXPR_BITWISE_AND:
1274 return create_arithmetic_binop(expression, new_d_And);
1275 case BINEXPR_BITWISE_OR:
1276 return create_arithmetic_binop(expression, new_d_Or);
1277 case BINEXPR_BITWISE_XOR:
1278 return create_arithmetic_binop(expression, new_d_Eor);
1279 case BINEXPR_SHIFTLEFT:
1280 case BINEXPR_SHIFTRIGHT:
1281 return create_shift(expression);
1284 return create_divmod(expression);
1285 case BINEXPR_LOGICAL_AND:
1286 case BINEXPR_LOGICAL_OR:
1287 return create_lazy_op(expression);
1289 expression_to_firm(expression->left);
1290 return expression_to_firm(expression->right);
1291 case BINEXPR_ADD_ASSIGN:
1292 return create_arithmetic_assign_binop(expression, new_d_Add);
1293 case BINEXPR_SUB_ASSIGN:
1294 return create_arithmetic_assign_binop(expression, new_d_Sub);
1295 case BINEXPR_MUL_ASSIGN:
1296 return create_arithmetic_assign_binop(expression, new_d_Mul);
1297 case BINEXPR_DIV_ASSIGN:
1298 return create_arithmetic_assign_divmod(expression);
1299 case BINEXPR_BITWISE_AND_ASSIGN:
1300 return create_arithmetic_assign_binop(expression, new_d_And);
1301 case BINEXPR_BITWISE_OR_ASSIGN:
1302 return create_arithmetic_assign_binop(expression, new_d_Or);
1303 case BINEXPR_BITWISE_XOR_ASSIGN:
1304 return create_arithmetic_assign_binop(expression, new_d_Eor);
1305 case BINEXPR_SHIFTLEFT_ASSIGN:
1306 case BINEXPR_SHIFTRIGHT_ASSIGN:
1307 return create_arithmetic_assign_shift(expression);
1309 panic("TODO binexpr type");
1313 static ir_node *array_access_addr(const array_access_expression_t *expression)
1315 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1319 type_t *type_left = skip_typeref(expression->array_ref->datatype);
1320 type_t *type_right = skip_typeref(expression->index->datatype);
1322 if(type_left->type == TYPE_POINTER || type_left->type == TYPE_ARRAY) {
1323 base_addr = expression_to_firm(expression->array_ref);
1324 offset = expression_to_firm(expression->index);
1326 assert(type_right->type == TYPE_POINTER
1327 || type_right->type == TYPE_ARRAY);
1328 base_addr = expression_to_firm(expression->index);
1329 offset = expression_to_firm(expression->array_ref);
1331 offset = create_conv(dbgi, offset, mode_Iu);
1333 unsigned elem_size = get_type_size(expression->expression.datatype);
1334 ir_node *elem_size_const = new_Const_long(mode_Iu, elem_size);
1335 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
1337 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P);
1342 static ir_node *array_access_to_firm(
1343 const array_access_expression_t *expression)
1345 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1346 ir_node *addr = array_access_addr(expression);
1347 type_t *type = skip_typeref(expression->expression.datatype);
1348 return deref_address(type, addr, dbgi);
1351 static ir_node *sizeof_to_firm(const sizeof_expression_t *expression)
1353 type_t *type = expression->type;
1355 type = expression->size_expression->datatype;
1356 assert(type != NULL);
1359 ir_mode *mode = get_ir_mode(expression->expression.datatype);
1360 unsigned size = get_type_size(type);
1361 ir_node *size_node = new_Const_long(mode, size);
1366 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
1368 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1370 ir_node *cur_block = get_cur_block();
1372 /* create the true block */
1373 ir_node *true_block = new_immBlock();
1375 ir_node *true_val = expression_to_firm(expression->true_expression);
1376 ir_node *true_jmp = new_Jmp();
1378 /* create the false block */
1379 ir_node *false_block = new_immBlock();
1381 ir_node *false_val = expression_to_firm(expression->false_expression);
1382 ir_node *false_jmp = new_Jmp();
1384 /* create the condition evaluation */
1385 set_cur_block(cur_block);
1386 create_condition_evaluation(expression->condition, true_block, false_block);
1387 mature_immBlock(true_block);
1388 mature_immBlock(false_block);
1390 /* create the common block */
1391 ir_node *common_block = new_immBlock();
1392 add_immBlock_pred(common_block, true_jmp);
1393 add_immBlock_pred(common_block, false_jmp);
1394 mature_immBlock(common_block);
1396 /* TODO improve static semantics, so either both or no values are NULL */
1397 if (true_val == NULL || false_val == NULL) return NULL;
1399 ir_node *in[2] = { true_val, false_val };
1400 ir_mode *mode = get_irn_mode(true_val);
1401 assert(get_irn_mode(false_val) == mode);
1402 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1407 static ir_node *select_addr(const select_expression_t *expression)
1409 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1411 ir_node *compound_addr = expression_to_firm(expression->compound);
1413 declaration_t *entry = expression->compound_entry;
1414 assert(entry->declaration_type == DECLARATION_TYPE_COMPOUND_MEMBER);
1415 ir_entity *entity = entry->v.entity;
1417 assert(entity != NULL);
1419 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
1424 static ir_node *select_to_firm(const select_expression_t *expression)
1426 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1427 ir_node *addr = select_addr(expression);
1428 type_t *type = skip_typeref(expression->expression.datatype);
1429 return deref_address(type, addr, dbgi);
1432 /* Values returned by __builtin_classify_type. */
1433 typedef enum gcc_type_class
1439 enumeral_type_class,
1442 reference_type_class,
1446 function_type_class,
1457 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
1459 const type_t *const type = expr->type_expression->datatype;
1465 const atomic_type_t *const atomic_type = (const atomic_type_t*)type;
1466 switch (atomic_type->atype) {
1467 // should not be reached
1468 case ATOMIC_TYPE_INVALID:
1472 // gcc cannot do that
1473 case ATOMIC_TYPE_VOID:
1474 tc = void_type_class;
1477 case ATOMIC_TYPE_CHAR: // gcc handles this as integer
1478 case ATOMIC_TYPE_SCHAR: // gcc handles this as integer
1479 case ATOMIC_TYPE_UCHAR: // gcc handles this as integer
1480 case ATOMIC_TYPE_SHORT:
1481 case ATOMIC_TYPE_USHORT:
1482 case ATOMIC_TYPE_INT:
1483 case ATOMIC_TYPE_UINT:
1484 case ATOMIC_TYPE_LONG:
1485 case ATOMIC_TYPE_ULONG:
1486 case ATOMIC_TYPE_LONGLONG:
1487 case ATOMIC_TYPE_ULONGLONG:
1488 case ATOMIC_TYPE_BOOL: // gcc handles this as integer
1489 tc = integer_type_class;
1492 case ATOMIC_TYPE_FLOAT:
1493 case ATOMIC_TYPE_DOUBLE:
1494 case ATOMIC_TYPE_LONG_DOUBLE:
1495 tc = real_type_class;
1498 #ifdef PROVIDE_COMPLEX
1499 case ATOMIC_TYPE_FLOAT_COMPLEX:
1500 case ATOMIC_TYPE_DOUBLE_COMPLEX:
1501 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
1502 tc = complex_type_class;
1504 case ATOMIC_TYPE_FLOAT_IMAGINARY:
1505 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
1506 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
1507 tc = complex_type_class;
1512 panic("Unimplemented case in classify_type_to_firm().");
1517 case TYPE_ARRAY: // gcc handles this as pointer
1518 case TYPE_FUNCTION: // gcc handles this as pointer
1519 case TYPE_POINTER: tc = pointer_type_class; break;
1520 case TYPE_COMPOUND_STRUCT: tc = record_type_class; break;
1521 case TYPE_COMPOUND_UNION: tc = union_type_class; break;
1523 // gcc handles this as integer
1524 case TYPE_ENUM: tc = integer_type_class; break;
1527 panic("Unimplemented case in classify_type_to_firm().");
1530 dbg_info *const dbgi = get_dbg_info(&expr->expression.source_position);
1531 ir_mode *const mode = mode_Is;
1532 tarval *const tv = new_tarval_from_long(tc, mode);
1533 return new_d_Const(dbgi, mode, tv);
1536 static ir_node *function_name_to_firm(const string_literal_t *const expr)
1538 if (current_function_name == NULL) {
1539 const source_position_t *const src_pos =
1540 &expr->expression.source_position;
1541 const char *const name = current_function_decl->symbol->string;
1542 current_function_name = string_to_firm(src_pos, "__func__", name);
1545 return current_function_name;
1548 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
1550 statement_t *statement = expr->statement;
1552 assert(statement->type == STATEMENT_COMPOUND);
1553 return compound_statement_to_firm((compound_statement_t*) statement);
1556 static ir_node *dereference_addr(const unary_expression_t *const expression)
1558 assert(expression->type == UNEXPR_DEREFERENCE);
1559 return expression_to_firm(expression->value);
1562 static ir_node *expression_to_addr(const expression_t *expression)
1564 switch(expression->type) {
1565 case EXPR_REFERENCE:
1566 return reference_addr((const reference_expression_t*) expression);
1567 case EXPR_ARRAY_ACCESS:
1568 return array_access_addr((const array_access_expression_t*) expression);
1570 return select_addr((const select_expression_t*) expression);
1572 const unary_expression_t *const unary_expr =
1573 (const unary_expression_t*)expression;
1574 if (unary_expr->type == UNEXPR_DEREFERENCE) {
1575 return dereference_addr(unary_expr);
1582 panic("trying to get address of non-lvalue");
1585 static ir_node *_expression_to_firm(const expression_t *expression)
1587 switch(expression->type) {
1589 return const_to_firm((const const_t*) expression);
1590 case EXPR_STRING_LITERAL:
1591 return string_literal_to_firm((const string_literal_t*) expression);
1592 case EXPR_REFERENCE:
1593 return reference_expression_to_firm(
1594 (const reference_expression_t*) expression);
1596 return call_expression_to_firm((const call_expression_t*) expression);
1598 return unary_expression_to_firm((const unary_expression_t*) expression);
1600 return binary_expression_to_firm(
1601 (const binary_expression_t*) expression);
1602 case EXPR_ARRAY_ACCESS:
1603 return array_access_to_firm(
1604 (const array_access_expression_t*) expression);
1606 return sizeof_to_firm((const sizeof_expression_t*) expression);
1607 case EXPR_CONDITIONAL:
1608 return conditional_to_firm((const conditional_expression_t*)expression);
1610 return select_to_firm((const select_expression_t*) expression);
1611 case EXPR_CLASSIFY_TYPE:
1612 return classify_type_to_firm((const classify_type_expression_t*)expression);
1614 case EXPR_PRETTY_FUNCTION:
1615 return function_name_to_firm((const string_literal_t*)expression);
1616 case EXPR_STATEMENT:
1617 return statement_expression_to_firm(
1618 (const statement_expression_t*) expression);
1621 case EXPR_BUILTIN_SYMBOL:
1622 panic("unimplemented expression found");
1628 panic("invalid expression found");
1631 static ir_node *expression_to_firm(const expression_t *expression)
1633 ir_node *res = _expression_to_firm(expression);
1635 if(res != NULL && get_irn_mode(res) == mode_b) {
1636 ir_mode *mode = get_ir_mode(expression->datatype);
1637 res = create_conv(NULL, res, mode);
1643 static ir_node *expression_to_modeb(const expression_t *expression)
1645 ir_node *res = _expression_to_firm(expression);
1646 res = create_conv(NULL, res, mode_b);
1652 * create a short-circuit expression evaluation that tries to construct
1653 * efficient control flow structures for &&, || and ! expressions
1655 static void create_condition_evaluation(const expression_t *expression,
1656 ir_node *true_block,
1657 ir_node *false_block)
1659 switch(expression->type) {
1661 unary_expression_t *unary_expression = (unary_expression_t*) expression;
1662 if(unary_expression->type == UNEXPR_NOT) {
1663 create_condition_evaluation(unary_expression->value, false_block,
1670 binary_expression_t *binary_expression
1671 = (binary_expression_t*) expression;
1672 if(binary_expression->type == BINEXPR_LOGICAL_AND) {
1673 ir_node *cur_block = get_cur_block();
1674 ir_node *extra_block = new_immBlock();
1675 set_cur_block(cur_block);
1676 create_condition_evaluation(binary_expression->left, extra_block,
1678 mature_immBlock(extra_block);
1679 set_cur_block(extra_block);
1680 create_condition_evaluation(binary_expression->right, true_block,
1684 if(binary_expression->type == BINEXPR_LOGICAL_OR) {
1685 ir_node *cur_block = get_cur_block();
1686 ir_node *extra_block = new_immBlock();
1687 set_cur_block(cur_block);
1688 create_condition_evaluation(binary_expression->left, true_block,
1690 mature_immBlock(extra_block);
1691 set_cur_block(extra_block);
1692 create_condition_evaluation(binary_expression->right, true_block,
1702 dbg_info *dbgi = get_dbg_info(&expression->source_position);
1703 ir_node *condition = expression_to_modeb(expression);
1704 ir_node *cond = new_d_Cond(dbgi, condition);
1705 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1706 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1708 add_immBlock_pred(true_block, true_proj);
1709 add_immBlock_pred(false_block, false_proj);
1711 set_cur_block(NULL);
1715 static void return_statement_to_firm(return_statement_t *statement)
1717 if(get_cur_block() == NULL)
1720 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1723 if(statement->return_value != NULL) {
1724 ir_node *retval = expression_to_firm(statement->return_value);
1728 ret = new_d_Return(dbgi, get_store(), 1, in);
1730 ret = new_d_Return(dbgi, get_store(), 0, NULL);
1732 ir_node *end_block = get_irg_end_block(current_ir_graph);
1733 add_immBlock_pred(end_block, ret);
1735 set_cur_block(NULL);
1738 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
1740 if(get_cur_block() == NULL)
1743 return expression_to_firm(statement->expression);
1746 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
1748 ir_node *result = NULL;
1749 statement_t *statement = compound->statements;
1750 for( ; statement != NULL; statement = statement->next) {
1751 //context2firm(&statement->context);
1753 if(statement->next == NULL && statement->type == STATEMENT_EXPRESSION) {
1754 result = expression_statement_to_firm(
1755 (expression_statement_t*) statement);
1758 statement_to_firm(statement);
1764 static void if_statement_to_firm(if_statement_t *statement)
1766 ir_node *cur_block = get_cur_block();
1768 ir_node *fallthrough_block = new_immBlock();
1770 /* the true (blocks) */
1771 ir_node *true_block;
1772 if (statement->true_statement != NULL) {
1773 true_block = new_immBlock();
1774 statement_to_firm(statement->true_statement);
1775 if(get_cur_block() != NULL) {
1776 ir_node *jmp = new_Jmp();
1777 add_immBlock_pred(fallthrough_block, jmp);
1780 true_block = fallthrough_block;
1783 /* the false (blocks) */
1784 ir_node *false_block;
1785 if(statement->false_statement != NULL) {
1786 false_block = new_immBlock();
1788 statement_to_firm(statement->false_statement);
1789 if(get_cur_block() != NULL) {
1790 ir_node *jmp = new_Jmp();
1791 add_immBlock_pred(fallthrough_block, jmp);
1794 false_block = fallthrough_block;
1797 /* create the condition */
1798 if(cur_block != NULL) {
1799 set_cur_block(cur_block);
1800 create_condition_evaluation(statement->condition, true_block,
1804 mature_immBlock(true_block);
1805 if(false_block != fallthrough_block) {
1806 mature_immBlock(false_block);
1808 mature_immBlock(fallthrough_block);
1810 set_cur_block(fallthrough_block);
1813 static void while_statement_to_firm(while_statement_t *statement)
1815 ir_node *jmp = NULL;
1816 if(get_cur_block() != NULL) {
1820 /* create the header block */
1821 ir_node *header_block = new_immBlock();
1823 add_immBlock_pred(header_block, jmp);
1826 /* the false block */
1827 ir_node *false_block = new_immBlock();
1830 ir_node *body_block;
1831 if (statement->body != NULL) {
1832 ir_node *old_continue_label = continue_label;
1833 ir_node *old_break_label = break_label;
1834 continue_label = header_block;
1835 break_label = false_block;
1837 body_block = new_immBlock();
1838 statement_to_firm(statement->body);
1840 assert(continue_label == header_block);
1841 assert(break_label == false_block);
1842 continue_label = old_continue_label;
1843 break_label = old_break_label;
1845 if(get_cur_block() != NULL) {
1846 ir_node *jmp = new_Jmp();
1847 add_immBlock_pred(header_block, jmp);
1850 body_block = header_block;
1853 /* create the condition */
1854 set_cur_block(header_block);
1856 create_condition_evaluation(statement->condition, body_block, false_block);
1857 mature_immBlock(body_block);
1858 mature_immBlock(false_block);
1859 mature_immBlock(header_block);
1861 set_cur_block(false_block);
1864 static void do_while_statement_to_firm(do_while_statement_t *statement)
1866 ir_node *jmp = NULL;
1867 if(get_cur_block() != NULL) {
1871 /* create the header block */
1872 ir_node *header_block = new_immBlock();
1874 /* the false block */
1875 ir_node *false_block = new_immBlock();
1878 ir_node *body_block = new_immBlock();
1880 add_immBlock_pred(body_block, jmp);
1883 if (statement->body != NULL) {
1884 ir_node *old_continue_label = continue_label;
1885 ir_node *old_break_label = break_label;
1886 continue_label = header_block;
1887 break_label = false_block;
1889 statement_to_firm(statement->body);
1891 assert(continue_label == header_block);
1892 assert(break_label == false_block);
1893 continue_label = old_continue_label;
1894 break_label = old_break_label;
1896 if (get_cur_block() == NULL) {
1897 mature_immBlock(header_block);
1898 mature_immBlock(body_block);
1899 mature_immBlock(false_block);
1904 ir_node *body_jmp = new_Jmp();
1905 add_immBlock_pred(header_block, body_jmp);
1906 mature_immBlock(header_block);
1908 /* create the condition */
1909 set_cur_block(header_block);
1911 create_condition_evaluation(statement->condition, body_block, false_block);
1912 mature_immBlock(body_block);
1913 mature_immBlock(false_block);
1914 mature_immBlock(header_block);
1916 set_cur_block(false_block);
1919 static void for_statement_to_firm(for_statement_t *statement)
1921 ir_node *jmp = NULL;
1922 if (get_cur_block() != NULL) {
1923 if(statement->initialisation != NULL) {
1924 expression_to_firm(statement->initialisation);
1929 /* create the step block */
1930 ir_node *const step_block = new_immBlock();
1931 if (statement->step != NULL) {
1932 expression_to_firm(statement->step);
1934 ir_node *const step_jmp = new_Jmp();
1936 /* create the header block */
1937 ir_node *const header_block = new_immBlock();
1939 add_immBlock_pred(header_block, jmp);
1941 add_immBlock_pred(header_block, step_jmp);
1943 /* the false block */
1944 ir_node *const false_block = new_immBlock();
1947 ir_node * body_block;
1948 if (statement->body != NULL) {
1949 ir_node *const old_continue_label = continue_label;
1950 ir_node *const old_break_label = break_label;
1951 continue_label = step_block;
1952 break_label = false_block;
1954 body_block = new_immBlock();
1955 statement_to_firm(statement->body);
1957 assert(continue_label == step_block);
1958 assert(break_label == false_block);
1959 continue_label = old_continue_label;
1960 break_label = old_break_label;
1962 if (get_cur_block() != NULL) {
1963 ir_node *const jmp = new_Jmp();
1964 add_immBlock_pred(step_block, jmp);
1967 body_block = step_block;
1970 /* create the condition */
1971 set_cur_block(header_block);
1972 if (statement->condition != NULL) {
1973 create_condition_evaluation(statement->condition, body_block,
1976 keep_alive(header_block);
1977 ir_node *jmp = new_Jmp();
1978 add_immBlock_pred(body_block, jmp);
1981 mature_immBlock(body_block);
1982 mature_immBlock(false_block);
1983 mature_immBlock(step_block);
1984 mature_immBlock(header_block);
1985 mature_immBlock(false_block);
1987 set_cur_block(false_block);
1990 static void create_declaration_entity(declaration_t *declaration,
1991 declaration_type_t declaration_type,
1992 ir_type *parent_type)
1994 ident *id = new_id_from_str(declaration->symbol->string);
1995 ir_type *irtype = get_ir_type(declaration->type);
1996 ir_entity *entity = new_entity(parent_type, id, irtype);
1997 set_entity_ld_ident(entity, id);
1999 declaration->declaration_type = declaration_type;
2000 declaration->v.entity = entity;
2001 set_entity_variability(entity, variability_uninitialized);
2002 /* TODO: visibility? */
2005 typedef struct compound_graph_path_entry_t compound_graph_path_entry_t;
2007 enum compound_graph_entry_type_t {
2008 COMPOUND_GRAPH_ENTRY_ARRAY,
2009 COMPOUND_GRAPH_ENTRY_COMPOUND
2012 struct compound_graph_path_entry_t {
2018 compound_graph_path_entry_t *prev;
2021 static void create_initializer_object(initializer_t *initializer, type_t *type,
2022 ir_entity *entity, compound_graph_path_entry_t *entry, int len);
2024 static compound_graph_path *create_compound_path(ir_type *type,
2025 compound_graph_path_entry_t *entry, int len)
2027 compound_graph_path *path = new_compound_graph_path(type, len);
2030 for( ; entry != NULL; entry = entry->prev, --i) {
2032 if(entry->type == COMPOUND_GRAPH_ENTRY_COMPOUND) {
2033 set_compound_graph_path_node(path, i, entry->v.entity);
2035 assert(entry->type == COMPOUND_GRAPH_ENTRY_ARRAY);
2036 set_compound_graph_path_array_index(path, i, entry->v.array_index);
2044 static void create_initializer_value(initializer_t *initializer,
2046 compound_graph_path_entry_t *entry,
2049 ir_node *node = expression_to_firm(initializer->v.value);
2050 ir_type *type = get_entity_type(entity);
2051 compound_graph_path *path = create_compound_path(type, entry, len);
2052 add_compound_ent_value_w_path(entity, node, path);
2055 static void create_initializer_compound(initializer_t *initializer,
2056 compound_type_t *type,
2058 compound_graph_path_entry_t *last_entry,
2061 declaration_t *compound_declaration = type->declaration;
2063 declaration_t *compound_entry = compound_declaration->context.declarations;
2065 compound_graph_path_entry_t entry;
2066 entry.type = COMPOUND_GRAPH_ENTRY_COMPOUND;
2067 entry.prev = last_entry;
2071 for( ; compound_entry != NULL; compound_entry = compound_entry->next) {
2072 if(compound_entry->symbol == NULL)
2074 if(compound_entry->namespc != NAMESPACE_NORMAL)
2077 if(i >= initializer->v.list.len)
2080 entry.v.entity = compound_entry->v.entity;
2082 initializer_t *sub_initializer = initializer->v.list.initializers[i];
2084 assert(compound_entry != NULL);
2085 assert(compound_entry->declaration_type
2086 == DECLARATION_TYPE_COMPOUND_MEMBER);
2088 if(sub_initializer->type == INITIALIZER_VALUE) {
2089 create_initializer_value(sub_initializer, entity, &entry, len);
2091 type_t *type = skip_typeref(compound_entry->type);
2092 create_initializer_object(sub_initializer, type, entity, &entry,
2100 static void create_initializer_array(initializer_t *initializer,
2101 array_type_t *type, ir_entity *entity,
2102 compound_graph_path_entry_t *last_entry,
2105 type_t *element_type = type->element_type;
2106 element_type = skip_typeref(element_type);
2108 compound_graph_path_entry_t entry;
2109 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2110 entry.prev = last_entry;
2113 for(size_t i = 0; i < initializer->v.list.len; ++i) {
2114 entry.v.array_index = i;
2116 initializer_t *sub_initializer = initializer->v.list.initializers[i];
2118 if(sub_initializer->type == INITIALIZER_VALUE) {
2119 create_initializer_value(sub_initializer, entity, &entry, len);
2121 assert(sub_initializer->type == INITIALIZER_LIST);
2122 create_initializer_object(sub_initializer, element_type, entity,
2128 static void create_initializer_string(initializer_t *initializer,
2129 array_type_t *type, ir_entity *entity,
2130 compound_graph_path_entry_t *last_entry,
2133 type_t *element_type = type->element_type;
2134 element_type = skip_typeref(element_type);
2136 compound_graph_path_entry_t entry;
2137 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2138 entry.prev = last_entry;
2141 ir_type *irtype = get_entity_type(entity);
2142 size_t arr_len = get_array_type_size(type);
2143 const char *p = initializer->v.string;
2145 for(i = 0; i < arr_len; ++i, ++p) {
2146 entry.v.array_index = i;
2148 ir_node *node = new_Const_long(mode_Bs, *p);
2149 compound_graph_path *path = create_compound_path(irtype, &entry, len);
2150 add_compound_ent_value_w_path(entity, node, path);
2157 static void create_initializer_object(initializer_t *initializer, type_t *type,
2158 ir_entity *entity, compound_graph_path_entry_t *entry, int len)
2160 if(type->type == TYPE_ARRAY) {
2161 array_type_t *array_type = (array_type_t*) type;
2163 if(initializer->type == INITIALIZER_STRING) {
2164 create_initializer_string(initializer, array_type, entity, entry, len);
2166 assert(initializer->type == INITIALIZER_LIST);
2167 create_initializer_array(initializer, array_type, entity, entry, len);
2170 assert(initializer->type == INITIALIZER_LIST);
2172 assert(type->type == TYPE_COMPOUND_STRUCT
2173 || type->type == TYPE_COMPOUND_UNION);
2174 compound_type_t *compound_type = (compound_type_t*) type;
2175 create_initializer_compound(initializer, compound_type, entity, entry, len);
2179 static void create_initializer_local_variable_entity(declaration_t *declaration)
2181 initializer_t *initializer = declaration->init.initializer;
2182 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
2183 ir_entity *entity = declaration->v.entity;
2184 ir_node *memory = get_store();
2185 ir_node *nomem = new_NoMem();
2186 ir_node *frame = get_irg_frame(current_ir_graph);
2187 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
2189 if(is_atomic_entity(entity)) {
2190 assert(initializer->type == INITIALIZER_VALUE);
2192 ir_node *value = expression_to_firm(initializer->v.value);
2193 ir_node *store = new_d_Store(dbgi, memory, addr, value);
2194 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
2195 set_store(store_mem);
2199 /* create a "template" entity which is copied to the entity on the stack */
2200 ident *id = unique_ident("initializer");
2201 ir_type *irtype = get_ir_type(declaration->type);
2202 ir_type *global_type = get_glob_type();
2203 ir_entity *init_entity = new_entity(global_type, id, irtype);
2204 set_entity_ld_ident(init_entity, id);
2206 set_entity_variability(init_entity, variability_initialized);
2207 set_entity_visibility(init_entity, visibility_local);
2209 ir_graph *old_current_ir_graph = current_ir_graph;
2210 current_ir_graph = get_const_code_irg();
2212 type_t *type = skip_typeref(declaration->type);
2213 create_initializer_object(initializer, type, init_entity, NULL, 0);
2215 assert(current_ir_graph == get_const_code_irg());
2216 current_ir_graph = old_current_ir_graph;
2218 ir_node *src_addr = create_symconst(dbgi, init_entity);
2219 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
2221 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
2222 set_store(copyb_mem);
2225 static void create_initializer(declaration_t *declaration)
2227 initializer_t *initializer = declaration->init.initializer;
2228 if(initializer == NULL)
2231 declaration_type_t declaration_type = (declaration_type_t)declaration->declaration_type;
2232 if(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY) {
2233 create_initializer_local_variable_entity(declaration);
2237 if(initializer->type == INITIALIZER_VALUE) {
2238 ir_node *value = expression_to_firm(initializer->v.value);
2240 if(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
2241 set_value(declaration->v.value_number, value);
2243 assert(declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
2245 ir_entity *entity = declaration->v.entity;
2247 set_entity_variability(entity, variability_initialized);
2248 set_atomic_ent_value(entity, value);
2251 declaration_type_t declaration_type = (declaration_type_t)declaration->declaration_type;
2252 assert(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY
2253 || declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
2255 ir_entity *entity = declaration->v.entity;
2256 set_entity_variability(entity, variability_initialized);
2258 type_t *type = skip_typeref(declaration->type);
2259 create_initializer_object(initializer, type, entity, NULL, 0);
2263 static void create_local_variable(declaration_t *declaration)
2265 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
2267 bool needs_entity = declaration->address_taken;
2268 type_t *type = skip_typeref(declaration->type);
2270 if(type->type == TYPE_ARRAY
2271 || type->type == TYPE_COMPOUND_STRUCT
2272 || type->type == TYPE_COMPOUND_UNION) {
2273 needs_entity = true;
2277 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2278 create_declaration_entity(declaration,
2279 DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
2282 declaration->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
2283 declaration->v.value_number = next_value_number_function;
2284 ++next_value_number_function;
2287 create_initializer(declaration);
2290 static void create_local_static_variable(declaration_t *declaration)
2292 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
2294 type_t *type = skip_typeref(declaration->type);
2295 ir_type *global_type = get_glob_type();
2296 ident *id = unique_ident(declaration->symbol->string);
2297 ir_type *irtype = get_ir_type(type);
2298 ir_entity *entity = new_entity(global_type, id, irtype);
2299 set_entity_ld_ident(entity, id);
2301 declaration->declaration_type = DECLARATION_TYPE_GLOBAL_VARIABLE;
2302 declaration->v.entity = entity;
2303 set_entity_variability(entity, variability_uninitialized);
2304 set_entity_visibility(entity, visibility_local);
2306 ir_graph *old_current_ir_graph = current_ir_graph;
2307 current_ir_graph = get_const_code_irg();
2309 create_initializer(declaration);
2311 assert(current_ir_graph == get_const_code_irg());
2312 current_ir_graph = old_current_ir_graph;
2315 static void declaration_statement_to_firm(declaration_statement_t *statement)
2317 declaration_t *declaration = statement->declarations_begin;
2318 declaration_t *end = statement->declarations_end->next;
2319 for( ; declaration != end; declaration = declaration->next) {
2320 type_t *type = declaration->type;
2322 switch(declaration->storage_class) {
2323 case STORAGE_CLASS_TYPEDEF:
2325 case STORAGE_CLASS_STATIC:
2326 create_local_static_variable(declaration);
2328 case STORAGE_CLASS_ENUM_ENTRY:
2329 panic("enum entry declaration in local block found");
2330 case STORAGE_CLASS_EXTERN:
2331 panic("extern declaration in local block found");
2332 case STORAGE_CLASS_NONE:
2333 case STORAGE_CLASS_AUTO:
2334 case STORAGE_CLASS_REGISTER:
2335 if(type->type == TYPE_FUNCTION) {
2336 panic("nested functions not supported yet");
2338 create_local_variable(declaration);
2342 panic("invalid storage class found");
2346 static void create_jump_statement(const statement_t *statement,
2347 ir_node *target_block)
2349 if(get_cur_block() == NULL)
2352 dbg_info *dbgi = get_dbg_info(&statement->source_position);
2353 ir_node *jump = new_d_Jmp(dbgi);
2354 add_immBlock_pred(target_block, jump);
2356 set_cur_block(NULL);
2359 static void switch_statement_to_firm(const switch_statement_t *statement)
2361 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
2363 ir_node *expression = expression_to_firm(statement->expression);
2364 ir_node *cond = new_d_Cond(dbgi, expression);
2365 ir_node *break_block = new_immBlock();
2367 set_cur_block(NULL);
2369 ir_node *const old_switch_cond = current_switch_cond;
2370 ir_node *const old_break_label = break_label;
2371 const bool old_saw_default_label = saw_default_label;
2372 current_switch_cond = cond;
2373 break_label = break_block;
2375 statement_to_firm(statement->body);
2377 if(get_cur_block() != NULL) {
2378 ir_node *jmp = new_Jmp();
2379 add_immBlock_pred(break_block, jmp);
2382 if (!saw_default_label) {
2383 set_cur_block(get_nodes_block(cond));
2384 ir_node *const proj = new_d_defaultProj(dbgi, cond,
2385 MAGIC_DEFAULT_PN_NUMBER);
2386 add_immBlock_pred(break_block, proj);
2389 assert(current_switch_cond == cond);
2390 assert(break_label == break_block);
2391 current_switch_cond = old_switch_cond;
2392 break_label = old_break_label;
2393 saw_default_label = old_saw_default_label;
2395 mature_immBlock(break_block);
2396 set_cur_block(break_block);
2399 static long fold_constant(const expression_t *expression)
2401 ir_graph *old_current_ir_graph = current_ir_graph;
2402 current_ir_graph = get_const_code_irg();
2404 ir_node *cnst = expression_to_firm(expression);
2405 if(!is_Const(cnst)) {
2406 panic("couldn't fold constantl");
2408 tarval *tv = get_Const_tarval(cnst);
2409 if(!tarval_is_long(tv)) {
2410 panic("folded constant not an integer");
2413 long res = get_tarval_long(tv);
2415 current_ir_graph = old_current_ir_graph;
2419 static void case_label_to_firm(const case_label_statement_t *statement)
2421 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
2423 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
2425 /* let's create a node and hope firm constant folding creates a Const
2428 set_cur_block(get_nodes_block(current_switch_cond));
2429 if(statement->expression) {
2430 long pn = fold_constant(statement->expression);
2431 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
2432 /* oops someone detected our cheating... */
2433 panic("magic default pn used");
2435 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
2437 saw_default_label = true;
2438 proj = new_d_defaultProj(dbgi, current_switch_cond,
2439 MAGIC_DEFAULT_PN_NUMBER);
2442 ir_node *block = new_immBlock();
2443 if (fallthrough != NULL) {
2444 add_immBlock_pred(block, fallthrough);
2446 add_immBlock_pred(block, proj);
2447 mature_immBlock(block);
2449 statement_to_firm(statement->label_statement);
2452 static ir_node *get_label_block(declaration_t *label)
2454 assert(label->namespc == NAMESPACE_LABEL);
2456 if(label->declaration_type == DECLARATION_TYPE_LABEL_BLOCK) {
2457 return label->v.block;
2459 assert(label->declaration_type == DECLARATION_TYPE_UNKNOWN);
2461 ir_node *old_cur_block = get_cur_block();
2462 ir_node *block = new_immBlock();
2463 set_cur_block(old_cur_block);
2465 label->declaration_type = DECLARATION_TYPE_LABEL_BLOCK;
2466 label->v.block = block;
2468 ARR_APP1(ir_node *, imature_blocks, block);
2473 static void label_to_firm(const label_statement_t *statement)
2475 ir_node *block = get_label_block(statement->label);
2477 if(get_cur_block() != NULL) {
2478 ir_node *jmp = new_Jmp();
2479 add_immBlock_pred(block, jmp);
2482 set_cur_block(block);
2485 statement_to_firm(statement->label_statement);
2488 static void goto_to_firm(const goto_statement_t *statement)
2490 if(get_cur_block() == NULL)
2493 ir_node *block = get_label_block(statement->label);
2494 ir_node *jmp = new_Jmp();
2495 add_immBlock_pred(block, jmp);
2497 set_cur_block(NULL);
2500 static void statement_to_firm(statement_t *statement)
2502 switch(statement->type) {
2503 case STATEMENT_COMPOUND:
2504 compound_statement_to_firm((compound_statement_t*) statement);
2506 case STATEMENT_RETURN:
2507 return_statement_to_firm((return_statement_t*) statement);
2509 case STATEMENT_EXPRESSION:
2510 expression_statement_to_firm((expression_statement_t*) statement);
2513 if_statement_to_firm((if_statement_t*) statement);
2515 case STATEMENT_WHILE:
2516 while_statement_to_firm((while_statement_t*) statement);
2518 case STATEMENT_DO_WHILE:
2519 do_while_statement_to_firm((do_while_statement_t*) statement);
2521 case STATEMENT_DECLARATION:
2522 declaration_statement_to_firm((declaration_statement_t*) statement);
2524 case STATEMENT_BREAK:
2525 create_jump_statement(statement, break_label);
2527 case STATEMENT_CONTINUE:
2528 create_jump_statement(statement, continue_label);
2530 case STATEMENT_SWITCH:
2531 switch_statement_to_firm((switch_statement_t*) statement);
2533 case STATEMENT_CASE_LABEL:
2534 case_label_to_firm((case_label_statement_t*) statement);
2537 for_statement_to_firm((for_statement_t*) statement);
2539 case STATEMENT_LABEL:
2540 label_to_firm((label_statement_t*) statement);
2542 case STATEMENT_GOTO:
2543 goto_to_firm((goto_statement_t*) statement);
2548 panic("Statement not implemented\n");
2551 static int count_local_declarations(const declaration_t * decl,
2552 const declaration_t *const end)
2555 for (; decl != end; decl = decl->next) {
2556 const type_t *type = skip_typeref(decl->type);
2557 switch (type->type) {
2561 if (!decl->address_taken) ++count;
2570 static int count_decls_in_stmts(const statement_t *stmt)
2573 for (; stmt != NULL; stmt = stmt->next) {
2574 switch (stmt->type) {
2575 case STATEMENT_DECLARATION: {
2576 const declaration_statement_t *const decl_stmt =
2577 (const declaration_statement_t*)stmt;
2578 count += count_local_declarations(decl_stmt->declarations_begin,
2579 decl_stmt->declarations_end->next);
2583 case STATEMENT_COMPOUND: {
2584 const compound_statement_t *const comp =
2585 (const compound_statement_t*)stmt;
2586 count += count_decls_in_stmts(comp->statements);
2590 case STATEMENT_IF: {
2591 const if_statement_t *const if_stmt = (const if_statement_t*)stmt;
2592 count += count_decls_in_stmts(if_stmt->true_statement);
2593 count += count_decls_in_stmts(if_stmt->false_statement);
2597 case STATEMENT_SWITCH: {
2598 const switch_statement_t *const switch_stmt =
2599 (const switch_statement_t*)stmt;
2600 count += count_decls_in_stmts(switch_stmt->body);
2604 case STATEMENT_LABEL: {
2605 const label_statement_t *const label_stmt =
2606 (const label_statement_t*)stmt;
2607 count += count_decls_in_stmts(label_stmt->label_statement);
2611 case STATEMENT_WHILE: {
2612 const while_statement_t *const while_stmt =
2613 (const while_statement_t*)stmt;
2614 count += count_decls_in_stmts(while_stmt->body);
2618 case STATEMENT_DO_WHILE: {
2619 const do_while_statement_t *const do_while_stmt =
2620 (const do_while_statement_t*)stmt;
2621 count += count_decls_in_stmts(do_while_stmt->body);
2625 case STATEMENT_FOR: {
2626 const for_statement_t *const for_stmt =
2627 (const for_statement_t*)stmt;
2628 /* TODO initialisation */
2629 count += count_decls_in_stmts(for_stmt->body);
2633 case STATEMENT_BREAK:
2634 case STATEMENT_CASE_LABEL:
2635 case STATEMENT_CONTINUE:
2636 case STATEMENT_EXPRESSION:
2637 case STATEMENT_GOTO:
2638 case STATEMENT_INVALID:
2639 case STATEMENT_RETURN:
2646 static int get_function_n_local_vars(declaration_t *declaration)
2650 /* count parameters */
2651 count += count_local_declarations(declaration->context.declarations, NULL);
2653 /* count local variables declared in body */
2654 count += count_decls_in_stmts(declaration->init.statement);
2656 /* TODO FIXME: Matze: I'm lazy don't want to scan all expressions
2657 * for expression statements... */
2663 static void initialize_function_parameters(declaration_t *declaration)
2665 ir_graph *irg = current_ir_graph;
2666 ir_node *args = get_irg_args(irg);
2667 ir_node *start_block = get_irg_start_block(irg);
2668 ir_type *function_irtype = get_ir_type(declaration->type);
2671 declaration_t *parameter = declaration->context.declarations;
2672 for( ; parameter != NULL; parameter = parameter->next, ++n) {
2673 assert(parameter->declaration_type == DECLARATION_TYPE_UNKNOWN);
2674 type_t *type = skip_typeref(parameter->type);
2676 bool needs_entity = parameter->address_taken;
2677 if(type->type == TYPE_COMPOUND_STRUCT
2678 || type->type == TYPE_COMPOUND_UNION) {
2679 needs_entity = true;
2683 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
2684 ident *id = new_id_from_str(parameter->symbol->string);
2685 set_entity_ident(entity, id);
2687 parameter->declaration_type
2688 = DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY;
2689 parameter->v.entity = entity;
2693 ir_mode *mode = get_ir_mode(parameter->type);
2695 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
2697 parameter->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
2698 parameter->v.value_number = next_value_number_function;
2699 ++next_value_number_function;
2701 set_value(parameter->v.value_number, proj);
2705 static void create_function(declaration_t *declaration)
2707 ir_entity *entity = get_function_entity(declaration);
2709 if(declaration->init.statement == NULL)
2712 current_function_decl = declaration;
2713 current_function_name = NULL;
2715 assert(imature_blocks == NULL);
2716 imature_blocks = NEW_ARR_F(ir_node*, 0);
2718 int n_local_vars = get_function_n_local_vars(declaration);
2719 ir_graph *irg = new_ir_graph(entity, n_local_vars);
2720 ir_node *first_block = get_cur_block();
2722 next_value_number_function = 0;
2723 initialize_function_parameters(declaration);
2725 statement_to_firm(declaration->init.statement);
2727 ir_node *end_block = get_irg_end_block(irg);
2729 /* do we have a return statement yet? */
2730 if(get_cur_block() != NULL) {
2731 assert(declaration->type->type == TYPE_FUNCTION);
2732 const function_type_t* const func_type
2733 = (const function_type_t*) declaration->type;
2735 if (func_type->result_type == type_void) {
2736 ret = new_Return(get_store(), 0, NULL);
2738 ir_mode *const mode = get_ir_mode(func_type->result_type);
2740 // ยง5.1.2.2.3 main implicitly returns 0
2741 if (strcmp(declaration->symbol->string, "main") == 0) {
2742 in[0] = new_Const(mode, get_mode_null(mode));
2744 in[0] = new_Unknown(mode);
2746 ret = new_Return(get_store(), 1, in);
2748 add_immBlock_pred(end_block, ret);
2751 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
2752 mature_immBlock(imature_blocks[i]);
2754 DEL_ARR_F(imature_blocks);
2755 imature_blocks = NULL;
2757 mature_immBlock(first_block);
2758 mature_immBlock(end_block);
2760 irg_finalize_cons(irg);
2762 /* finalize the frame type */
2763 ir_type *frame_type = get_irg_frame_type(irg);
2764 int n = get_compound_n_members(frame_type);
2767 for(int i = 0; i < n; ++i) {
2768 ir_entity *entity = get_compound_member(frame_type, i);
2769 ir_type *entity_type = get_entity_type(entity);
2771 int align = get_type_alignment_bytes(entity_type);
2772 if(align > align_all)
2776 misalign = offset % align;
2778 offset += align - misalign;
2782 set_entity_offset(entity, offset);
2783 offset += get_type_size_bytes(entity_type);
2785 set_type_size_bytes(frame_type, offset);
2786 set_type_alignment_bytes(frame_type, align_all);
2787 set_type_state(frame_type, layout_fixed);
2792 static void create_global_variable(declaration_t *declaration)
2794 ir_type *global_type = get_glob_type();
2795 create_declaration_entity(declaration, DECLARATION_TYPE_GLOBAL_VARIABLE,
2798 ir_entity *entity = declaration->v.entity;
2799 if(declaration->storage_class == STORAGE_CLASS_STATIC) {
2800 set_entity_visibility(entity, visibility_local);
2801 } else if(declaration->storage_class == STORAGE_CLASS_EXTERN) {
2802 set_entity_visibility(entity, visibility_external_allocated);
2804 set_entity_visibility(entity, visibility_external_visible);
2806 current_ir_graph = get_const_code_irg();
2807 create_initializer(declaration);
2810 static void context_to_firm(context_t *context)
2812 /* first pass: create declarations */
2813 declaration_t *declaration = context->declarations;
2814 for( ; declaration != NULL; declaration = declaration->next) {
2815 if(declaration->namespc != NAMESPACE_NORMAL)
2817 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
2818 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
2820 if(declaration->symbol == NULL)
2823 type_t *type = declaration->type;
2824 if(type->type == TYPE_FUNCTION) {
2825 get_function_entity(declaration);
2827 create_global_variable(declaration);
2831 /* second pass: create code */
2832 declaration = context->declarations;
2833 for( ; declaration != NULL; declaration = declaration->next) {
2834 if(declaration->namespc != NAMESPACE_NORMAL)
2836 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
2837 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
2839 if(declaration->symbol == NULL)
2842 type_t *type = declaration->type;
2843 if(type->type != TYPE_FUNCTION)
2846 create_function(declaration);
2850 void translation_unit_to_firm(translation_unit_t *unit)
2852 /* just to be sure */
2853 continue_label = NULL;
2855 current_switch_cond = NULL;
2857 context_to_firm(& unit->context);