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));
899 switch(expression->type) {
900 case UNEXPR_POSTFIX_INCREMENT: {
901 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
902 set_value_for_expression(value, new_value);
905 case UNEXPR_POSTFIX_DECREMENT: {
906 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
907 set_value_for_expression(value, new_value);
910 case UNEXPR_PREFIX_INCREMENT: {
911 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
912 set_value_for_expression(value, new_value);
915 case UNEXPR_PREFIX_DECREMENT: {
916 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
917 set_value_for_expression(value, new_value);
921 panic("no incdec expr in create_incdec");
927 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
929 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
930 type_t *type = skip_typeref(expression->expression.datatype);
932 if(expression->type == UNEXPR_TAKE_ADDRESS)
933 return expression_to_addr(expression->value);
935 const expression_t *value = expression->value;
936 ir_node *value_node = expression_to_firm(value);
938 switch(expression->type) {
940 return new_d_Minus(dbgi, value_node, get_ir_mode(type));
943 case UNEXPR_BITWISE_NEGATE:
944 return new_d_Not(dbgi, value_node, get_ir_mode(type));
946 if(get_irn_mode(value_node) != mode_b) {
947 value_node = create_conv(dbgi, value_node, mode_b);
949 value_node = new_d_Not(dbgi, value_node, mode_b);
950 ir_mode *const mode = get_ir_mode(type);
952 value_node = create_conv(dbgi, value_node, mode);
956 case UNEXPR_DEREFERENCE:
957 return deref_address(type, value_node, dbgi);
958 case UNEXPR_POSTFIX_INCREMENT:
959 case UNEXPR_POSTFIX_DECREMENT:
960 case UNEXPR_PREFIX_INCREMENT:
961 case UNEXPR_PREFIX_DECREMENT:
962 return create_incdec(expression);
964 return create_conv(dbgi, value_node, get_ir_mode(type));
966 case UNEXPR_TAKE_ADDRESS:
970 panic("invalid UNEXPR type found");
973 static long get_pnc(binary_expression_type_t type)
976 case BINEXPR_EQUAL: return pn_Cmp_Eq;
977 case BINEXPR_NOTEQUAL: return pn_Cmp_Lg;
978 case BINEXPR_LESS: return pn_Cmp_Lt;
979 case BINEXPR_LESSEQUAL: return pn_Cmp_Le;
980 case BINEXPR_GREATER: return pn_Cmp_Gt;
981 case BINEXPR_GREATEREQUAL: return pn_Cmp_Ge;
985 panic("trying to get pn_Cmp from non-comparison binexpr type");
988 static ir_node *create_lazy_op(const binary_expression_t *expression)
990 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
991 type_t *type = expression->expression.datatype;
992 ir_mode *mode = get_ir_mode(type);
994 ir_node *cur_block = get_cur_block();
996 ir_node *one_block = new_immBlock();
997 ir_node *one = new_Const(mode, get_mode_one(mode));
998 ir_node *jmp_one = new_d_Jmp(dbgi);
1000 ir_node *zero_block = new_immBlock();
1001 ir_node *zero = new_Const(mode, get_mode_null(mode));
1002 ir_node *jmp_zero = new_d_Jmp(dbgi);
1004 set_cur_block(cur_block);
1005 create_condition_evaluation((const expression_t*) expression,
1006 one_block, zero_block);
1007 mature_immBlock(one_block);
1008 mature_immBlock(zero_block);
1010 ir_node *common_block = new_immBlock();
1011 add_immBlock_pred(common_block, jmp_one);
1012 add_immBlock_pred(common_block, jmp_zero);
1013 mature_immBlock(common_block);
1015 ir_node *in[2] = { one, zero };
1016 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1021 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
1022 ir_node *right, ir_mode *mode);
1024 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
1025 create_arithmetic_func func)
1027 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1028 ir_node *left = expression_to_firm(expression->left);
1029 ir_node *right = expression_to_firm(expression->right);
1030 type_t *type = expression->right->datatype;
1031 /* be careful with the modes, because in arithmetic assign nodes only
1032 * the right operand has the mode of the arithmetic already */
1033 ir_mode *mode = get_ir_mode(type);
1034 left = create_conv(dbgi, left, mode);
1035 ir_node *res = func(dbgi, left, right, mode);
1040 static ir_node *pointer_arithmetic(ir_node *const pointer,
1043 dbg_info *const dbgi,
1044 const create_arithmetic_func func)
1046 pointer_type_t *const pointer_type = (pointer_type_t*)type;
1047 type_t *const points_to = pointer_type->points_to;
1048 const unsigned elem_size = get_type_size(points_to);
1050 assert(elem_size >= 1);
1051 if (elem_size > 1) {
1052 integer = create_conv(dbgi, integer, mode_Is);
1053 ir_node *const cnst = new_Const_long(mode_Is, (long)elem_size);
1054 ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_Is);
1058 ir_mode *const mode = get_ir_mode(type);
1059 return func(dbgi, pointer, integer, mode);
1062 static ir_node *create_arithmetic_assign_binop(
1063 const binary_expression_t *expression, create_arithmetic_func func)
1065 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1066 type_t *const type = expression->expression.datatype;
1069 if (type->type == TYPE_POINTER) {
1070 ir_node *const pointer = expression_to_firm(expression->left);
1071 ir_node * integer = expression_to_firm(expression->right);
1072 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
1074 value = create_arithmetic_binop(expression, func);
1077 ir_mode *const mode = get_ir_mode(type);
1078 value = create_conv(dbgi, value, mode);
1079 set_value_for_expression(expression->left, value);
1084 static ir_node *create_add(const binary_expression_t *expression)
1086 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1087 ir_node *left = expression_to_firm(expression->left);
1088 ir_node *right = expression_to_firm(expression->right);
1089 type_t *type = expression->expression.datatype;
1091 expression_t *expr_left = expression->left;
1092 expression_t *expr_right = expression->right;
1093 type_t *type_left = skip_typeref(expr_left->datatype);
1094 type_t *type_right = skip_typeref(expr_right->datatype);
1096 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1097 ir_mode *const mode = get_ir_mode(type);
1098 return new_d_Add(dbgi, left, right, mode);
1101 if (type_left->type == TYPE_POINTER || type_left->type == TYPE_ARRAY) {
1102 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
1104 assert(type_right->type == TYPE_POINTER || type_right->type == TYPE_ARRAY);
1105 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
1109 static ir_node *create_sub(const binary_expression_t *expression)
1111 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1112 expression_t *const expr_left = expression->left;
1113 expression_t *const expr_right = expression->right;
1114 ir_node *const left = expression_to_firm(expr_left);
1115 ir_node *const right = expression_to_firm(expr_right);
1116 type_t *const type = expression->expression.datatype;
1117 type_t *const type_left = skip_typeref(expr_left->datatype);
1118 type_t *const type_right = skip_typeref(expr_right->datatype);
1120 if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1121 ir_mode *const mode = get_ir_mode(type);
1122 return new_d_Sub(dbgi, left, right, mode);
1123 } else if (type_left->type == TYPE_POINTER && type_right->type == TYPE_POINTER) {
1124 const pointer_type_t *const ptr_type = (const pointer_type_t*)type_left;
1125 const unsigned elem_size = get_type_size(ptr_type->points_to);
1126 ir_mode *const mode = get_ir_mode(type);
1127 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
1128 ir_node *const cnst = new_Const_long(mode_Is, (long)elem_size);
1129 ir_node *const no_mem = new_NoMem();
1130 ir_node *const div = new_d_Div(dbgi, no_mem, sub, cnst, mode,
1131 op_pin_state_floats);
1132 return new_d_Proj(dbgi, div, mode, pn_Div_res);
1135 assert(type_left->type == TYPE_POINTER);
1136 return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
1139 static ir_node *create_shift(const binary_expression_t *expression)
1141 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1142 ir_node *left = expression_to_firm(expression->left);
1143 ir_node *right = expression_to_firm(expression->right);
1144 type_t *type = expression->expression.datatype;
1145 ir_mode *mode = get_ir_mode(type);
1147 /* firm always wants the shift count to be unsigned */
1148 right = create_conv(dbgi, right, mode_Iu);
1152 switch(expression->type) {
1153 case BINEXPR_SHIFTLEFT_ASSIGN:
1154 case BINEXPR_SHIFTLEFT:
1155 res = new_d_Shl(dbgi, left, right, mode);
1157 case BINEXPR_SHIFTRIGHT_ASSIGN:
1158 case BINEXPR_SHIFTRIGHT: {
1159 expression_t *expr_left = expression->left;
1160 type_t *type_left = skip_typeref(expr_left->datatype);
1162 if(is_type_signed(type_left)) {
1163 res = new_d_Shrs(dbgi, left, right, mode);
1165 res = new_d_Shr(dbgi, left, right, mode);
1170 panic("create shift op called for non-shift op");
1177 static ir_node *create_divmod(const binary_expression_t *expression)
1179 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1180 ir_node *left = expression_to_firm(expression->left);
1181 ir_node *right = expression_to_firm(expression->right);
1182 ir_node *pin = new_Pin(new_NoMem());
1183 /* be careful with the modes, because in arithmetic assign nodes only
1184 * the right operand has the mode of the arithmetic already */
1185 type_t *type = expression->right->datatype;
1186 ir_mode *mode = get_ir_mode(type);
1187 left = create_conv(dbgi, left, mode);
1191 switch (expression->type) {
1193 case BINEXPR_DIV_ASSIGN:
1194 if(mode_is_float(mode)) {
1195 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
1196 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
1198 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
1199 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
1204 case BINEXPR_MOD_ASSIGN:
1205 assert(!mode_is_float(mode));
1206 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
1207 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
1210 default: panic("unexpected binary expression type in create_divmod()");
1216 static ir_node *create_arithmetic_assign_divmod(
1217 const binary_expression_t *expression)
1219 ir_node * value = create_divmod(expression);
1220 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1221 type_t *const type = expression->expression.datatype;
1222 ir_mode *const mode = get_ir_mode(type);
1224 assert(type->type != TYPE_POINTER);
1226 value = create_conv(dbgi, value, mode);
1227 set_value_for_expression(expression->left, value);
1232 static ir_node *create_arithmetic_assign_shift(
1233 const binary_expression_t *expression)
1235 ir_node * value = create_shift(expression);
1236 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1237 type_t *const type = expression->expression.datatype;
1238 ir_mode *const mode = get_ir_mode(type);
1240 value = create_conv(dbgi, value, mode);
1241 set_value_for_expression(expression->left, value);
1246 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
1248 binary_expression_type_t type = expression->type;
1251 case BINEXPR_NOTEQUAL:
1253 case BINEXPR_LESSEQUAL:
1254 case BINEXPR_GREATER:
1255 case BINEXPR_GREATEREQUAL: {
1256 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1257 ir_node *left = expression_to_firm(expression->left);
1258 ir_node *right = expression_to_firm(expression->right);
1259 ir_node *cmp = new_d_Cmp(dbgi, left, right);
1260 long pnc = get_pnc(type);
1261 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
1264 case BINEXPR_ASSIGN: {
1265 ir_node *right = expression_to_firm(expression->right);
1266 set_value_for_expression(expression->left, right);
1270 return create_add(expression);
1272 return create_sub(expression);
1274 return create_arithmetic_binop(expression, new_d_Mul);
1275 case BINEXPR_BITWISE_AND:
1276 return create_arithmetic_binop(expression, new_d_And);
1277 case BINEXPR_BITWISE_OR:
1278 return create_arithmetic_binop(expression, new_d_Or);
1279 case BINEXPR_BITWISE_XOR:
1280 return create_arithmetic_binop(expression, new_d_Eor);
1281 case BINEXPR_SHIFTLEFT:
1282 case BINEXPR_SHIFTRIGHT:
1283 return create_shift(expression);
1286 return create_divmod(expression);
1287 case BINEXPR_LOGICAL_AND:
1288 case BINEXPR_LOGICAL_OR:
1289 return create_lazy_op(expression);
1291 expression_to_firm(expression->left);
1292 return expression_to_firm(expression->right);
1293 case BINEXPR_ADD_ASSIGN:
1294 return create_arithmetic_assign_binop(expression, new_d_Add);
1295 case BINEXPR_SUB_ASSIGN:
1296 return create_arithmetic_assign_binop(expression, new_d_Sub);
1297 case BINEXPR_MUL_ASSIGN:
1298 return create_arithmetic_assign_binop(expression, new_d_Mul);
1299 case BINEXPR_DIV_ASSIGN:
1300 return create_arithmetic_assign_divmod(expression);
1301 case BINEXPR_BITWISE_AND_ASSIGN:
1302 return create_arithmetic_assign_binop(expression, new_d_And);
1303 case BINEXPR_BITWISE_OR_ASSIGN:
1304 return create_arithmetic_assign_binop(expression, new_d_Or);
1305 case BINEXPR_BITWISE_XOR_ASSIGN:
1306 return create_arithmetic_assign_binop(expression, new_d_Eor);
1307 case BINEXPR_SHIFTLEFT_ASSIGN:
1308 case BINEXPR_SHIFTRIGHT_ASSIGN:
1309 return create_arithmetic_assign_shift(expression);
1311 panic("TODO binexpr type");
1315 static ir_node *array_access_addr(const array_access_expression_t *expression)
1317 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1321 type_t *type_left = skip_typeref(expression->array_ref->datatype);
1322 type_t *type_right = skip_typeref(expression->index->datatype);
1324 if(type_left->type == TYPE_POINTER || type_left->type == TYPE_ARRAY) {
1325 base_addr = expression_to_firm(expression->array_ref);
1326 offset = expression_to_firm(expression->index);
1328 assert(type_right->type == TYPE_POINTER
1329 || type_right->type == TYPE_ARRAY);
1330 base_addr = expression_to_firm(expression->index);
1331 offset = expression_to_firm(expression->array_ref);
1333 offset = create_conv(dbgi, offset, mode_Iu);
1335 unsigned elem_size = get_type_size(expression->expression.datatype);
1336 ir_node *elem_size_const = new_Const_long(mode_Iu, elem_size);
1337 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
1339 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P);
1344 static ir_node *array_access_to_firm(
1345 const array_access_expression_t *expression)
1347 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1348 ir_node *addr = array_access_addr(expression);
1349 type_t *type = skip_typeref(expression->expression.datatype);
1350 return deref_address(type, addr, dbgi);
1353 static ir_node *sizeof_to_firm(const sizeof_expression_t *expression)
1355 type_t *type = expression->type;
1357 type = expression->size_expression->datatype;
1358 assert(type != NULL);
1361 ir_mode *mode = get_ir_mode(expression->expression.datatype);
1362 unsigned size = get_type_size(type);
1363 ir_node *size_node = new_Const_long(mode, size);
1368 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
1370 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1372 ir_node *cur_block = get_cur_block();
1374 /* create the true block */
1375 ir_node *true_block = new_immBlock();
1377 ir_node *true_val = expression_to_firm(expression->true_expression);
1378 ir_node *true_jmp = new_Jmp();
1380 /* create the false block */
1381 ir_node *false_block = new_immBlock();
1383 ir_node *false_val = expression_to_firm(expression->false_expression);
1384 ir_node *false_jmp = new_Jmp();
1386 /* create the condition evaluation */
1387 set_cur_block(cur_block);
1388 create_condition_evaluation(expression->condition, true_block, false_block);
1389 mature_immBlock(true_block);
1390 mature_immBlock(false_block);
1392 /* create the common block */
1393 ir_node *common_block = new_immBlock();
1394 add_immBlock_pred(common_block, true_jmp);
1395 add_immBlock_pred(common_block, false_jmp);
1396 mature_immBlock(common_block);
1398 /* TODO improve static semantics, so either both or no values are NULL */
1399 if (true_val == NULL || false_val == NULL) return NULL;
1401 ir_node *in[2] = { true_val, false_val };
1402 ir_mode *mode = get_irn_mode(true_val);
1403 assert(get_irn_mode(false_val) == mode);
1404 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1409 static ir_node *select_addr(const select_expression_t *expression)
1411 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1413 ir_node *compound_addr = expression_to_firm(expression->compound);
1415 declaration_t *entry = expression->compound_entry;
1416 assert(entry->declaration_type == DECLARATION_TYPE_COMPOUND_MEMBER);
1417 ir_entity *entity = entry->v.entity;
1419 assert(entity != NULL);
1421 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
1426 static ir_node *select_to_firm(const select_expression_t *expression)
1428 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1429 ir_node *addr = select_addr(expression);
1430 type_t *type = skip_typeref(expression->expression.datatype);
1431 return deref_address(type, addr, dbgi);
1434 /* Values returned by __builtin_classify_type. */
1435 typedef enum gcc_type_class
1441 enumeral_type_class,
1444 reference_type_class,
1448 function_type_class,
1459 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
1461 const type_t *const type = expr->type_expression->datatype;
1467 const atomic_type_t *const atomic_type = (const atomic_type_t*)type;
1468 switch (atomic_type->atype) {
1469 // should not be reached
1470 case ATOMIC_TYPE_INVALID:
1474 // gcc cannot do that
1475 case ATOMIC_TYPE_VOID:
1476 tc = void_type_class;
1479 case ATOMIC_TYPE_CHAR: // gcc handles this as integer
1480 case ATOMIC_TYPE_SCHAR: // gcc handles this as integer
1481 case ATOMIC_TYPE_UCHAR: // gcc handles this as integer
1482 case ATOMIC_TYPE_SHORT:
1483 case ATOMIC_TYPE_USHORT:
1484 case ATOMIC_TYPE_INT:
1485 case ATOMIC_TYPE_UINT:
1486 case ATOMIC_TYPE_LONG:
1487 case ATOMIC_TYPE_ULONG:
1488 case ATOMIC_TYPE_LONGLONG:
1489 case ATOMIC_TYPE_ULONGLONG:
1490 case ATOMIC_TYPE_BOOL: // gcc handles this as integer
1491 tc = integer_type_class;
1494 case ATOMIC_TYPE_FLOAT:
1495 case ATOMIC_TYPE_DOUBLE:
1496 case ATOMIC_TYPE_LONG_DOUBLE:
1497 tc = real_type_class;
1500 #ifdef PROVIDE_COMPLEX
1501 case ATOMIC_TYPE_FLOAT_COMPLEX:
1502 case ATOMIC_TYPE_DOUBLE_COMPLEX:
1503 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
1504 tc = complex_type_class;
1506 case ATOMIC_TYPE_FLOAT_IMAGINARY:
1507 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
1508 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
1509 tc = complex_type_class;
1514 panic("Unimplemented case in classify_type_to_firm().");
1519 case TYPE_ARRAY: // gcc handles this as pointer
1520 case TYPE_FUNCTION: // gcc handles this as pointer
1521 case TYPE_POINTER: tc = pointer_type_class; break;
1522 case TYPE_COMPOUND_STRUCT: tc = record_type_class; break;
1523 case TYPE_COMPOUND_UNION: tc = union_type_class; break;
1525 // gcc handles this as integer
1526 case TYPE_ENUM: tc = integer_type_class; break;
1529 panic("Unimplemented case in classify_type_to_firm().");
1532 dbg_info *const dbgi = get_dbg_info(&expr->expression.source_position);
1533 ir_mode *const mode = mode_Is;
1534 tarval *const tv = new_tarval_from_long(tc, mode);
1535 return new_d_Const(dbgi, mode, tv);
1538 static ir_node *function_name_to_firm(const string_literal_t *const expr)
1540 if (current_function_name == NULL) {
1541 const source_position_t *const src_pos =
1542 &expr->expression.source_position;
1543 const char *const name = current_function_decl->symbol->string;
1544 current_function_name = string_to_firm(src_pos, "__func__", name);
1547 return current_function_name;
1550 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
1552 statement_t *statement = expr->statement;
1554 assert(statement->type == STATEMENT_COMPOUND);
1555 return compound_statement_to_firm((compound_statement_t*) statement);
1558 static ir_node *dereference_addr(const unary_expression_t *const expression)
1560 assert(expression->type == UNEXPR_DEREFERENCE);
1561 return expression_to_firm(expression->value);
1564 static ir_node *expression_to_addr(const expression_t *expression)
1566 switch(expression->type) {
1567 case EXPR_REFERENCE:
1568 return reference_addr((const reference_expression_t*) expression);
1569 case EXPR_ARRAY_ACCESS:
1570 return array_access_addr((const array_access_expression_t*) expression);
1572 return select_addr((const select_expression_t*) expression);
1574 const unary_expression_t *const unary_expr =
1575 (const unary_expression_t*)expression;
1576 if (unary_expr->type == UNEXPR_DEREFERENCE) {
1577 return dereference_addr(unary_expr);
1584 panic("trying to get address of non-lvalue");
1587 static ir_node *_expression_to_firm(const expression_t *expression)
1589 switch(expression->type) {
1591 return const_to_firm((const const_t*) expression);
1592 case EXPR_STRING_LITERAL:
1593 return string_literal_to_firm((const string_literal_t*) expression);
1594 case EXPR_REFERENCE:
1595 return reference_expression_to_firm(
1596 (const reference_expression_t*) expression);
1598 return call_expression_to_firm((const call_expression_t*) expression);
1600 return unary_expression_to_firm((const unary_expression_t*) expression);
1602 return binary_expression_to_firm(
1603 (const binary_expression_t*) expression);
1604 case EXPR_ARRAY_ACCESS:
1605 return array_access_to_firm(
1606 (const array_access_expression_t*) expression);
1608 return sizeof_to_firm((const sizeof_expression_t*) expression);
1609 case EXPR_CONDITIONAL:
1610 return conditional_to_firm((const conditional_expression_t*)expression);
1612 return select_to_firm((const select_expression_t*) expression);
1613 case EXPR_CLASSIFY_TYPE:
1614 return classify_type_to_firm((const classify_type_expression_t*)expression);
1616 case EXPR_PRETTY_FUNCTION:
1617 return function_name_to_firm((const string_literal_t*)expression);
1618 case EXPR_STATEMENT:
1619 return statement_expression_to_firm(
1620 (const statement_expression_t*) expression);
1623 case EXPR_BUILTIN_SYMBOL:
1624 panic("unimplemented expression found");
1630 panic("invalid expression found");
1633 static ir_node *expression_to_firm(const expression_t *expression)
1635 ir_node *res = _expression_to_firm(expression);
1637 if(res != NULL && get_irn_mode(res) == mode_b) {
1638 ir_mode *mode = get_ir_mode(expression->datatype);
1639 res = create_conv(NULL, res, mode);
1645 static ir_node *expression_to_modeb(const expression_t *expression)
1647 ir_node *res = _expression_to_firm(expression);
1648 res = create_conv(NULL, res, mode_b);
1654 * create a short-circuit expression evaluation that tries to construct
1655 * efficient control flow structures for &&, || and ! expressions
1657 static void create_condition_evaluation(const expression_t *expression,
1658 ir_node *true_block,
1659 ir_node *false_block)
1661 switch(expression->type) {
1663 unary_expression_t *unary_expression = (unary_expression_t*) expression;
1664 if(unary_expression->type == UNEXPR_NOT) {
1665 create_condition_evaluation(unary_expression->value, false_block,
1672 binary_expression_t *binary_expression
1673 = (binary_expression_t*) expression;
1674 if(binary_expression->type == BINEXPR_LOGICAL_AND) {
1675 ir_node *cur_block = get_cur_block();
1676 ir_node *extra_block = new_immBlock();
1677 set_cur_block(cur_block);
1678 create_condition_evaluation(binary_expression->left, extra_block,
1680 mature_immBlock(extra_block);
1681 set_cur_block(extra_block);
1682 create_condition_evaluation(binary_expression->right, true_block,
1686 if(binary_expression->type == BINEXPR_LOGICAL_OR) {
1687 ir_node *cur_block = get_cur_block();
1688 ir_node *extra_block = new_immBlock();
1689 set_cur_block(cur_block);
1690 create_condition_evaluation(binary_expression->left, true_block,
1692 mature_immBlock(extra_block);
1693 set_cur_block(extra_block);
1694 create_condition_evaluation(binary_expression->right, true_block,
1704 dbg_info *dbgi = get_dbg_info(&expression->source_position);
1705 ir_node *condition = expression_to_modeb(expression);
1706 ir_node *cond = new_d_Cond(dbgi, condition);
1707 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1708 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1710 add_immBlock_pred(true_block, true_proj);
1711 add_immBlock_pred(false_block, false_proj);
1713 set_cur_block(NULL);
1717 static void return_statement_to_firm(return_statement_t *statement)
1719 if(get_cur_block() == NULL)
1722 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1725 if(statement->return_value != NULL) {
1726 ir_node *retval = expression_to_firm(statement->return_value);
1730 ret = new_d_Return(dbgi, get_store(), 1, in);
1732 ret = new_d_Return(dbgi, get_store(), 0, NULL);
1734 ir_node *end_block = get_irg_end_block(current_ir_graph);
1735 add_immBlock_pred(end_block, ret);
1737 set_cur_block(NULL);
1740 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
1742 if(get_cur_block() == NULL)
1745 return expression_to_firm(statement->expression);
1748 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
1750 ir_node *result = NULL;
1751 statement_t *statement = compound->statements;
1752 for( ; statement != NULL; statement = statement->next) {
1753 //context2firm(&statement->context);
1755 if(statement->next == NULL && statement->type == STATEMENT_EXPRESSION) {
1756 result = expression_statement_to_firm(
1757 (expression_statement_t*) statement);
1760 statement_to_firm(statement);
1766 static void if_statement_to_firm(if_statement_t *statement)
1768 ir_node *cur_block = get_cur_block();
1770 ir_node *fallthrough_block = new_immBlock();
1772 /* the true (blocks) */
1773 ir_node *true_block;
1774 if (statement->true_statement != NULL) {
1775 true_block = new_immBlock();
1776 statement_to_firm(statement->true_statement);
1777 if(get_cur_block() != NULL) {
1778 ir_node *jmp = new_Jmp();
1779 add_immBlock_pred(fallthrough_block, jmp);
1782 true_block = fallthrough_block;
1785 /* the false (blocks) */
1786 ir_node *false_block;
1787 if(statement->false_statement != NULL) {
1788 false_block = new_immBlock();
1790 statement_to_firm(statement->false_statement);
1791 if(get_cur_block() != NULL) {
1792 ir_node *jmp = new_Jmp();
1793 add_immBlock_pred(fallthrough_block, jmp);
1796 false_block = fallthrough_block;
1799 /* create the condition */
1800 if(cur_block != NULL) {
1801 set_cur_block(cur_block);
1802 create_condition_evaluation(statement->condition, true_block,
1806 mature_immBlock(true_block);
1807 if(false_block != fallthrough_block) {
1808 mature_immBlock(false_block);
1810 mature_immBlock(fallthrough_block);
1812 set_cur_block(fallthrough_block);
1815 static void while_statement_to_firm(while_statement_t *statement)
1817 ir_node *jmp = NULL;
1818 if(get_cur_block() != NULL) {
1822 /* create the header block */
1823 ir_node *header_block = new_immBlock();
1825 add_immBlock_pred(header_block, jmp);
1828 /* the false block */
1829 ir_node *false_block = new_immBlock();
1832 ir_node *body_block;
1833 if (statement->body != NULL) {
1834 ir_node *old_continue_label = continue_label;
1835 ir_node *old_break_label = break_label;
1836 continue_label = header_block;
1837 break_label = false_block;
1839 body_block = new_immBlock();
1840 statement_to_firm(statement->body);
1842 assert(continue_label == header_block);
1843 assert(break_label == false_block);
1844 continue_label = old_continue_label;
1845 break_label = old_break_label;
1847 if(get_cur_block() != NULL) {
1848 ir_node *jmp = new_Jmp();
1849 add_immBlock_pred(header_block, jmp);
1852 body_block = header_block;
1855 /* create the condition */
1856 set_cur_block(header_block);
1858 create_condition_evaluation(statement->condition, body_block, false_block);
1859 mature_immBlock(body_block);
1860 mature_immBlock(false_block);
1861 mature_immBlock(header_block);
1863 set_cur_block(false_block);
1866 static void do_while_statement_to_firm(do_while_statement_t *statement)
1868 ir_node *jmp = NULL;
1869 if(get_cur_block() != NULL) {
1873 /* create the header block */
1874 ir_node *header_block = new_immBlock();
1876 /* the false block */
1877 ir_node *false_block = new_immBlock();
1880 ir_node *body_block = new_immBlock();
1882 add_immBlock_pred(body_block, jmp);
1885 if (statement->body != NULL) {
1886 ir_node *old_continue_label = continue_label;
1887 ir_node *old_break_label = break_label;
1888 continue_label = header_block;
1889 break_label = false_block;
1891 statement_to_firm(statement->body);
1893 assert(continue_label == header_block);
1894 assert(break_label == false_block);
1895 continue_label = old_continue_label;
1896 break_label = old_break_label;
1898 if (get_cur_block() == NULL) {
1899 mature_immBlock(header_block);
1900 mature_immBlock(body_block);
1901 mature_immBlock(false_block);
1906 ir_node *body_jmp = new_Jmp();
1907 add_immBlock_pred(header_block, body_jmp);
1908 mature_immBlock(header_block);
1910 /* create the condition */
1911 set_cur_block(header_block);
1913 create_condition_evaluation(statement->condition, body_block, false_block);
1914 mature_immBlock(body_block);
1915 mature_immBlock(false_block);
1916 mature_immBlock(header_block);
1918 set_cur_block(false_block);
1921 static void for_statement_to_firm(for_statement_t *statement)
1923 ir_node *jmp = NULL;
1924 if (get_cur_block() != NULL) {
1925 if(statement->initialisation != NULL) {
1926 expression_to_firm(statement->initialisation);
1931 /* create the step block */
1932 ir_node *const step_block = new_immBlock();
1933 if (statement->step != NULL) {
1934 expression_to_firm(statement->step);
1936 ir_node *const step_jmp = new_Jmp();
1938 /* create the header block */
1939 ir_node *const header_block = new_immBlock();
1941 add_immBlock_pred(header_block, jmp);
1943 add_immBlock_pred(header_block, step_jmp);
1945 /* the false block */
1946 ir_node *const false_block = new_immBlock();
1949 ir_node * body_block;
1950 if (statement->body != NULL) {
1951 ir_node *const old_continue_label = continue_label;
1952 ir_node *const old_break_label = break_label;
1953 continue_label = step_block;
1954 break_label = false_block;
1956 body_block = new_immBlock();
1957 statement_to_firm(statement->body);
1959 assert(continue_label == step_block);
1960 assert(break_label == false_block);
1961 continue_label = old_continue_label;
1962 break_label = old_break_label;
1964 if (get_cur_block() != NULL) {
1965 ir_node *const jmp = new_Jmp();
1966 add_immBlock_pred(step_block, jmp);
1969 body_block = step_block;
1972 /* create the condition */
1973 set_cur_block(header_block);
1974 if (statement->condition != NULL) {
1975 create_condition_evaluation(statement->condition, body_block,
1978 keep_alive(header_block);
1979 ir_node *jmp = new_Jmp();
1980 add_immBlock_pred(body_block, jmp);
1983 mature_immBlock(body_block);
1984 mature_immBlock(false_block);
1985 mature_immBlock(step_block);
1986 mature_immBlock(header_block);
1987 mature_immBlock(false_block);
1989 set_cur_block(false_block);
1992 static void create_declaration_entity(declaration_t *declaration,
1993 declaration_type_t declaration_type,
1994 ir_type *parent_type)
1996 ident *id = new_id_from_str(declaration->symbol->string);
1997 ir_type *irtype = get_ir_type(declaration->type);
1998 ir_entity *entity = new_entity(parent_type, id, irtype);
1999 set_entity_ld_ident(entity, id);
2001 declaration->declaration_type = declaration_type;
2002 declaration->v.entity = entity;
2003 set_entity_variability(entity, variability_uninitialized);
2004 /* TODO: visibility? */
2007 typedef struct compound_graph_path_entry_t compound_graph_path_entry_t;
2009 enum compound_graph_entry_type_t {
2010 COMPOUND_GRAPH_ENTRY_ARRAY,
2011 COMPOUND_GRAPH_ENTRY_COMPOUND
2014 struct compound_graph_path_entry_t {
2020 compound_graph_path_entry_t *prev;
2023 static void create_initializer_list(initializer_list_t *initializer,
2024 type_t *type, ir_entity *entity,
2025 compound_graph_path_entry_t *entry,
2028 static void create_initializer_value(initializer_value_t *initializer,
2030 compound_graph_path_entry_t *entry,
2033 ir_node *node = expression_to_firm(initializer->value);
2035 ir_type *type = get_entity_type(entity);
2036 compound_graph_path *path = new_compound_graph_path(type, len);
2039 for( ; entry != NULL; entry = entry->prev, --i) {
2041 if(entry->type == COMPOUND_GRAPH_ENTRY_COMPOUND) {
2042 set_compound_graph_path_node(path, i, entry->v.entity);
2044 assert(entry->type == COMPOUND_GRAPH_ENTRY_ARRAY);
2045 set_compound_graph_path_array_index(path, i, entry->v.array_index);
2050 add_compound_ent_value_w_path(entity, node, path);
2053 static void create_initializer_compound(initializer_list_t *initializer,
2054 compound_type_t *type,
2056 compound_graph_path_entry_t *last_entry,
2059 declaration_t *compound_declaration = type->declaration;
2061 declaration_t *compound_entry = compound_declaration->context.declarations;
2063 compound_graph_path_entry_t entry;
2064 entry.type = COMPOUND_GRAPH_ENTRY_COMPOUND;
2065 entry.prev = last_entry;
2069 for( ; compound_entry != NULL; compound_entry = compound_entry->next) {
2070 if(compound_entry->symbol == NULL)
2072 if(compound_entry->namespc != NAMESPACE_NORMAL)
2075 if(i >= initializer->len)
2078 entry.v.entity = compound_entry->v.entity;
2080 initializer_t *sub_initializer = initializer->initializers[i];
2082 assert(compound_entry != NULL);
2083 assert(compound_entry->declaration_type
2084 == DECLARATION_TYPE_COMPOUND_MEMBER);
2086 if(sub_initializer->type == INITIALIZER_VALUE) {
2087 create_initializer_value((initializer_value_t*) sub_initializer,
2088 entity, &entry, len);
2090 assert(sub_initializer->type == INITIALIZER_LIST);
2091 type_t *type = skip_typeref(compound_entry->type);
2092 create_initializer_list((initializer_list_t*) sub_initializer,
2093 type, entity, &entry, len);
2100 static void create_initializer_array(initializer_list_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->len; ++i) {
2114 entry.v.array_index = i;
2116 initializer_t *sub_initializer = initializer->initializers[i];
2118 if(sub_initializer->type == INITIALIZER_VALUE) {
2119 create_initializer_value((initializer_value_t*) sub_initializer,
2120 entity, &entry, len);
2122 assert(sub_initializer->type == INITIALIZER_LIST);
2123 create_initializer_list((initializer_list_t*) sub_initializer,
2124 element_type, entity, &entry, len);
2129 static void create_initializer_list(initializer_list_t *initializer,
2130 type_t *type, ir_entity *entity,
2131 compound_graph_path_entry_t *entry, int len)
2133 if(type->type == TYPE_ARRAY) {
2134 create_initializer_array(initializer, (array_type_t*) type,
2135 entity, entry, len);
2137 assert(type->type == TYPE_COMPOUND_STRUCT
2138 || type->type == TYPE_COMPOUND_UNION);
2139 create_initializer_compound(initializer, (compound_type_t*) type,
2140 entity, entry, len);
2144 static void create_initializer_local_variable_entity(declaration_t *declaration)
2146 initializer_t *initializer = declaration->init.initializer;
2147 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
2148 ir_entity *entity = declaration->v.entity;
2149 ir_node *memory = get_store();
2150 ir_node *nomem = new_NoMem();
2151 ir_node *frame = get_irg_frame(current_ir_graph);
2152 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
2154 if(is_atomic_entity(entity)) {
2155 assert(initializer->type == INITIALIZER_VALUE);
2156 initializer_value_t *initializer_value
2157 = (initializer_value_t*) initializer;
2159 ir_node *value = expression_to_firm(initializer_value->value);
2160 ir_node *store = new_d_Store(dbgi, memory, addr, value);
2161 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
2162 set_store(store_mem);
2166 /* create a "template" entity which is copied to the entity on the stack */
2167 ident *id = unique_ident("initializer");
2168 ir_type *irtype = get_ir_type(declaration->type);
2169 ir_type *global_type = get_glob_type();
2170 ir_entity *init_entity = new_entity(global_type, id, irtype);
2171 set_entity_ld_ident(init_entity, id);
2173 set_entity_variability(init_entity, variability_initialized);
2174 set_entity_visibility(init_entity, visibility_local);
2176 assert(initializer->type == INITIALIZER_LIST);
2177 initializer_list_t *list = (initializer_list_t*) initializer;
2179 ir_graph *old_current_ir_graph = current_ir_graph;
2180 current_ir_graph = get_const_code_irg();
2182 type_t *type = skip_typeref(declaration->type);
2183 create_initializer_list(list, type, init_entity, NULL, 0);
2185 assert(current_ir_graph == get_const_code_irg());
2186 current_ir_graph = old_current_ir_graph;
2188 ir_node *src_addr = create_symconst(dbgi, init_entity);
2189 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
2191 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
2192 set_store(copyb_mem);
2195 static void create_initializer(declaration_t *declaration)
2197 initializer_t *initializer = declaration->init.initializer;
2198 if(initializer == NULL)
2201 declaration_type_t declaration_type = declaration->declaration_type;
2202 if(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY) {
2203 create_initializer_local_variable_entity(declaration);
2207 if(initializer->type == INITIALIZER_VALUE) {
2208 initializer_value_t *initializer_value
2209 = (initializer_value_t*) initializer;
2210 ir_node *value = expression_to_firm(initializer_value->value);
2212 if(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
2213 set_value(declaration->v.value_number, value);
2215 assert(declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
2217 ir_entity *entity = declaration->v.entity;
2219 set_entity_variability(entity, variability_initialized);
2220 set_atomic_ent_value(entity, value);
2223 assert(initializer->type == INITIALIZER_LIST);
2224 initializer_list_t *list = (initializer_list_t*) initializer;
2226 declaration_type_t declaration_type = declaration->declaration_type;
2227 assert(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY
2228 || declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
2230 ir_entity *entity = declaration->v.entity;
2231 set_entity_variability(entity, variability_initialized);
2233 type_t *type = skip_typeref(declaration->type);
2234 create_initializer_list(list, type, entity, NULL, 0);
2238 static void create_local_variable(declaration_t *declaration)
2240 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
2242 bool needs_entity = declaration->address_taken;
2243 type_t *type = skip_typeref(declaration->type);
2245 if(type->type == TYPE_ARRAY
2246 || type->type == TYPE_COMPOUND_STRUCT
2247 || type->type == TYPE_COMPOUND_UNION) {
2248 needs_entity = true;
2252 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2253 create_declaration_entity(declaration,
2254 DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
2257 declaration->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
2258 declaration->v.value_number = next_value_number_function;
2259 ++next_value_number_function;
2262 create_initializer(declaration);
2265 static void create_local_static_variable(declaration_t *declaration)
2267 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
2269 type_t *type = skip_typeref(declaration->type);
2270 ir_type *global_type = get_glob_type();
2271 ident *id = unique_ident(declaration->symbol->string);
2272 ir_type *irtype = get_ir_type(type);
2273 ir_entity *entity = new_entity(global_type, id, irtype);
2274 set_entity_ld_ident(entity, id);
2276 declaration->declaration_type = DECLARATION_TYPE_GLOBAL_VARIABLE;
2277 declaration->v.entity = entity;
2278 set_entity_variability(entity, variability_uninitialized);
2279 set_entity_visibility(entity, visibility_local);
2281 create_initializer(declaration);
2284 static void declaration_statement_to_firm(declaration_statement_t *statement)
2286 declaration_t *declaration = statement->declarations_begin;
2287 declaration_t *end = statement->declarations_end->next;
2288 for( ; declaration != end; declaration = declaration->next) {
2289 type_t *type = declaration->type;
2291 switch(declaration->storage_class) {
2292 case STORAGE_CLASS_TYPEDEF:
2294 case STORAGE_CLASS_STATIC:
2295 create_local_static_variable(declaration);
2297 case STORAGE_CLASS_ENUM_ENTRY:
2298 panic("enum entry declaration in local block found");
2299 case STORAGE_CLASS_EXTERN:
2300 panic("extern declaration in local block found");
2301 case STORAGE_CLASS_NONE:
2302 case STORAGE_CLASS_AUTO:
2303 case STORAGE_CLASS_REGISTER:
2304 if(type->type == TYPE_FUNCTION) {
2305 panic("nested functions not supported yet");
2307 create_local_variable(declaration);
2311 panic("invalid storage class found");
2315 static void create_jump_statement(const statement_t *statement,
2316 ir_node *target_block)
2318 if(get_cur_block() == NULL)
2321 dbg_info *dbgi = get_dbg_info(&statement->source_position);
2322 ir_node *jump = new_d_Jmp(dbgi);
2323 add_immBlock_pred(target_block, jump);
2325 set_cur_block(NULL);
2328 static void switch_statement_to_firm(const switch_statement_t *statement)
2330 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
2332 ir_node *expression = expression_to_firm(statement->expression);
2333 ir_node *cond = new_d_Cond(dbgi, expression);
2334 ir_node *break_block = new_immBlock();
2336 set_cur_block(NULL);
2338 ir_node *const old_switch_cond = current_switch_cond;
2339 ir_node *const old_break_label = break_label;
2340 const bool old_saw_default_label = saw_default_label;
2341 current_switch_cond = cond;
2342 break_label = break_block;
2344 statement_to_firm(statement->body);
2346 if(get_cur_block() != NULL) {
2347 ir_node *jmp = new_Jmp();
2348 add_immBlock_pred(break_block, jmp);
2351 if (!saw_default_label) {
2352 set_cur_block(get_nodes_block(cond));
2353 ir_node *const proj = new_d_defaultProj(dbgi, cond,
2354 MAGIC_DEFAULT_PN_NUMBER);
2355 add_immBlock_pred(break_block, proj);
2358 assert(current_switch_cond == cond);
2359 assert(break_label == break_block);
2360 current_switch_cond = old_switch_cond;
2361 break_label = old_break_label;
2362 saw_default_label = old_saw_default_label;
2364 mature_immBlock(break_block);
2365 set_cur_block(break_block);
2368 static long fold_constant(const expression_t *expression)
2370 ir_graph *old_current_ir_graph = current_ir_graph;
2371 current_ir_graph = get_const_code_irg();
2373 ir_node *cnst = expression_to_firm(expression);
2374 if(!is_Const(cnst)) {
2375 panic("couldn't fold constantl");
2377 tarval *tv = get_Const_tarval(cnst);
2378 if(!tarval_is_long(tv)) {
2379 panic("folded constant not an integer");
2382 long res = get_tarval_long(tv);
2384 current_ir_graph = old_current_ir_graph;
2388 static void case_label_to_firm(const case_label_statement_t *statement)
2390 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
2392 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
2394 /* let's create a node and hope firm constant folding creates a Const
2397 set_cur_block(get_nodes_block(current_switch_cond));
2398 if(statement->expression) {
2399 long pn = fold_constant(statement->expression);
2400 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
2401 /* oops someone detected our cheating... */
2402 panic("magic default pn used");
2404 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
2406 saw_default_label = true;
2407 proj = new_d_defaultProj(dbgi, current_switch_cond,
2408 MAGIC_DEFAULT_PN_NUMBER);
2411 ir_node *block = new_immBlock();
2412 if (fallthrough != NULL) {
2413 add_immBlock_pred(block, fallthrough);
2415 add_immBlock_pred(block, proj);
2416 mature_immBlock(block);
2418 statement_to_firm(statement->label_statement);
2421 static ir_node *get_label_block(declaration_t *label)
2423 assert(label->namespc == NAMESPACE_LABEL);
2425 if(label->declaration_type == DECLARATION_TYPE_LABEL_BLOCK) {
2426 return label->v.block;
2428 assert(label->declaration_type == DECLARATION_TYPE_UNKNOWN);
2430 ir_node *old_cur_block = get_cur_block();
2431 ir_node *block = new_immBlock();
2432 set_cur_block(old_cur_block);
2434 label->declaration_type = DECLARATION_TYPE_LABEL_BLOCK;
2435 label->v.block = block;
2437 ARR_APP1(ir_node *, imature_blocks, block);
2442 static void label_to_firm(const label_statement_t *statement)
2444 ir_node *block = get_label_block(statement->label);
2446 if(get_cur_block() != NULL) {
2447 ir_node *jmp = new_Jmp();
2448 add_immBlock_pred(block, jmp);
2451 set_cur_block(block);
2454 statement_to_firm(statement->label_statement);
2457 static void goto_to_firm(const goto_statement_t *statement)
2459 if(get_cur_block() == NULL)
2462 ir_node *block = get_label_block(statement->label);
2463 ir_node *jmp = new_Jmp();
2464 add_immBlock_pred(block, jmp);
2466 set_cur_block(NULL);
2469 static void statement_to_firm(statement_t *statement)
2471 switch(statement->type) {
2472 case STATEMENT_COMPOUND:
2473 compound_statement_to_firm((compound_statement_t*) statement);
2475 case STATEMENT_RETURN:
2476 return_statement_to_firm((return_statement_t*) statement);
2478 case STATEMENT_EXPRESSION:
2479 expression_statement_to_firm((expression_statement_t*) statement);
2482 if_statement_to_firm((if_statement_t*) statement);
2484 case STATEMENT_WHILE:
2485 while_statement_to_firm((while_statement_t*) statement);
2487 case STATEMENT_DO_WHILE:
2488 do_while_statement_to_firm((do_while_statement_t*) statement);
2490 case STATEMENT_DECLARATION:
2491 declaration_statement_to_firm((declaration_statement_t*) statement);
2493 case STATEMENT_BREAK:
2494 create_jump_statement(statement, break_label);
2496 case STATEMENT_CONTINUE:
2497 create_jump_statement(statement, continue_label);
2499 case STATEMENT_SWITCH:
2500 switch_statement_to_firm((switch_statement_t*) statement);
2502 case STATEMENT_CASE_LABEL:
2503 case_label_to_firm((case_label_statement_t*) statement);
2506 for_statement_to_firm((for_statement_t*) statement);
2508 case STATEMENT_LABEL:
2509 label_to_firm((label_statement_t*) statement);
2511 case STATEMENT_GOTO:
2512 goto_to_firm((goto_statement_t*) statement);
2517 panic("Statement not implemented\n");
2520 static int count_local_declarations(const declaration_t * decl,
2521 const declaration_t *const end)
2524 for (; decl != end; decl = decl->next) {
2525 const type_t *type = skip_typeref(decl->type);
2526 switch (type->type) {
2530 if (!decl->address_taken) ++count;
2539 static int count_decls_in_stmts(const statement_t *stmt)
2542 for (; stmt != NULL; stmt = stmt->next) {
2543 switch (stmt->type) {
2544 case STATEMENT_DECLARATION: {
2545 const declaration_statement_t *const decl_stmt =
2546 (const declaration_statement_t*)stmt;
2547 count += count_local_declarations(decl_stmt->declarations_begin,
2548 decl_stmt->declarations_end->next);
2552 case STATEMENT_COMPOUND: {
2553 const compound_statement_t *const comp =
2554 (const compound_statement_t*)stmt;
2555 count += count_decls_in_stmts(comp->statements);
2559 case STATEMENT_IF: {
2560 const if_statement_t *const if_stmt = (const if_statement_t*)stmt;
2561 count += count_decls_in_stmts(if_stmt->true_statement);
2562 count += count_decls_in_stmts(if_stmt->false_statement);
2566 case STATEMENT_SWITCH: {
2567 const switch_statement_t *const switch_stmt =
2568 (const switch_statement_t*)stmt;
2569 count += count_decls_in_stmts(switch_stmt->body);
2573 case STATEMENT_LABEL: {
2574 const label_statement_t *const label_stmt =
2575 (const label_statement_t*)stmt;
2576 count += count_decls_in_stmts(label_stmt->label_statement);
2580 case STATEMENT_WHILE: {
2581 const while_statement_t *const while_stmt =
2582 (const while_statement_t*)stmt;
2583 count += count_decls_in_stmts(while_stmt->body);
2587 case STATEMENT_DO_WHILE: {
2588 const do_while_statement_t *const do_while_stmt =
2589 (const do_while_statement_t*)stmt;
2590 count += count_decls_in_stmts(do_while_stmt->body);
2594 case STATEMENT_FOR: {
2595 const for_statement_t *const for_stmt =
2596 (const for_statement_t*)stmt;
2597 /* TODO initialisation */
2598 count += count_decls_in_stmts(for_stmt->body);
2602 case STATEMENT_BREAK:
2603 case STATEMENT_CASE_LABEL:
2604 case STATEMENT_CONTINUE:
2605 case STATEMENT_EXPRESSION:
2606 case STATEMENT_GOTO:
2607 case STATEMENT_INVALID:
2608 case STATEMENT_RETURN:
2615 static int get_function_n_local_vars(declaration_t *declaration)
2619 /* count parameters */
2620 count += count_local_declarations(declaration->context.declarations, NULL);
2622 /* count local variables declared in body */
2623 count += count_decls_in_stmts(declaration->init.statement);
2625 /* TODO FIXME: Matze: I'm lazy don't want to scan all expressions
2626 * for expression statements... */
2632 static void initialize_function_parameters(declaration_t *declaration)
2634 ir_graph *irg = current_ir_graph;
2635 ir_node *args = get_irg_args(irg);
2636 ir_node *start_block = get_irg_start_block(irg);
2637 ir_type *function_irtype = get_ir_type(declaration->type);
2640 declaration_t *parameter = declaration->context.declarations;
2641 for( ; parameter != NULL; parameter = parameter->next, ++n) {
2642 assert(parameter->declaration_type == DECLARATION_TYPE_UNKNOWN);
2643 type_t *type = skip_typeref(parameter->type);
2645 bool needs_entity = parameter->address_taken;
2646 if(type->type == TYPE_COMPOUND_STRUCT
2647 || type->type == TYPE_COMPOUND_UNION) {
2648 needs_entity = true;
2652 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
2653 ident *id = new_id_from_str(parameter->symbol->string);
2654 set_entity_ident(entity, id);
2656 parameter->declaration_type
2657 = DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY;
2658 parameter->v.entity = entity;
2662 ir_mode *mode = get_ir_mode(parameter->type);
2664 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
2666 parameter->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
2667 parameter->v.value_number = next_value_number_function;
2668 ++next_value_number_function;
2670 set_value(parameter->v.value_number, proj);
2674 static void create_function(declaration_t *declaration)
2676 ir_entity *entity = get_function_entity(declaration);
2678 if(declaration->init.statement == NULL)
2681 current_function_decl = declaration;
2682 current_function_name = NULL;
2684 assert(imature_blocks == NULL);
2685 imature_blocks = NEW_ARR_F(ir_node*, 0);
2687 int n_local_vars = get_function_n_local_vars(declaration);
2688 ir_graph *irg = new_ir_graph(entity, n_local_vars);
2689 ir_node *first_block = get_cur_block();
2691 next_value_number_function = 0;
2692 initialize_function_parameters(declaration);
2694 statement_to_firm(declaration->init.statement);
2696 ir_node *end_block = get_irg_end_block(irg);
2698 /* do we have a return statement yet? */
2699 if(get_cur_block() != NULL) {
2700 assert(declaration->type->type == TYPE_FUNCTION);
2701 const function_type_t* const func_type
2702 = (const function_type_t*) declaration->type;
2704 if (func_type->result_type == type_void) {
2705 ret = new_Return(get_store(), 0, NULL);
2707 ir_mode *const mode = get_ir_mode(func_type->result_type);
2709 // ยง5.1.2.2.3 main implicitly returns 0
2710 if (strcmp(declaration->symbol->string, "main") == 0) {
2711 in[0] = new_Const(mode, get_mode_null(mode));
2713 in[0] = new_Unknown(mode);
2715 ret = new_Return(get_store(), 1, in);
2717 add_immBlock_pred(end_block, ret);
2720 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
2721 mature_immBlock(imature_blocks[i]);
2723 DEL_ARR_F(imature_blocks);
2724 imature_blocks = NULL;
2726 mature_immBlock(first_block);
2727 mature_immBlock(end_block);
2729 irg_finalize_cons(irg);
2731 /* finalize the frame type */
2732 ir_type *frame_type = get_irg_frame_type(irg);
2733 int n = get_compound_n_members(frame_type);
2736 for(int i = 0; i < n; ++i) {
2737 ir_entity *entity = get_compound_member(frame_type, i);
2738 ir_type *entity_type = get_entity_type(entity);
2740 int align = get_type_alignment_bytes(entity_type);
2741 if(align > align_all)
2745 misalign = offset % align;
2747 offset += align - misalign;
2751 set_entity_offset(entity, offset);
2752 offset += get_type_size_bytes(entity_type);
2754 set_type_size_bytes(frame_type, offset);
2755 set_type_alignment_bytes(frame_type, align_all);
2756 set_type_state(frame_type, layout_fixed);
2761 static void create_global_variable(declaration_t *declaration)
2763 ir_type *global_type = get_glob_type();
2764 create_declaration_entity(declaration, DECLARATION_TYPE_GLOBAL_VARIABLE,
2767 ir_entity *entity = declaration->v.entity;
2768 if(declaration->storage_class == STORAGE_CLASS_STATIC) {
2769 set_entity_visibility(entity, visibility_local);
2770 } else if(declaration->storage_class == STORAGE_CLASS_EXTERN) {
2771 set_entity_visibility(entity, visibility_external_allocated);
2773 set_entity_visibility(entity, visibility_external_visible);
2775 current_ir_graph = get_const_code_irg();
2776 create_initializer(declaration);
2779 static void context_to_firm(context_t *context)
2781 /* first pass: create declarations */
2782 declaration_t *declaration = context->declarations;
2783 for( ; declaration != NULL; declaration = declaration->next) {
2784 if(declaration->namespc != NAMESPACE_NORMAL)
2786 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
2787 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
2789 if(declaration->symbol == NULL)
2792 type_t *type = declaration->type;
2793 if(type->type == TYPE_FUNCTION) {
2794 get_function_entity(declaration);
2796 create_global_variable(declaration);
2800 /* second pass: create code */
2801 declaration = context->declarations;
2802 for( ; declaration != NULL; declaration = declaration->next) {
2803 if(declaration->namespc != NAMESPACE_NORMAL)
2805 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
2806 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
2808 if(declaration->symbol == NULL)
2811 type_t *type = declaration->type;
2812 if(type->type != TYPE_FUNCTION)
2815 create_function(declaration);
2819 void translation_unit_to_firm(translation_unit_t *unit)
2821 /* just to be sure */
2822 continue_label = NULL;
2824 current_switch_cond = NULL;
2826 context_to_firm(& unit->context);