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 int next_value_number_function;
32 static ir_node *continue_label;
33 static ir_node *break_label;
34 static ir_node *current_switch_cond;
35 static bool saw_default_label;
36 static ir_node **imature_blocks;
38 typedef enum declaration_type_t {
39 DECLARATION_TYPE_UNKNOWN,
40 DECLARATION_TYPE_FUNCTION,
41 DECLARATION_TYPE_GLOBAL_VARIABLE,
42 DECLARATION_TYPE_LOCAL_VARIABLE,
43 DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
44 DECLARATION_TYPE_COMPOUND_MEMBER,
45 DECLARATION_TYPE_LABEL_BLOCK,
48 static ir_type *get_ir_type(type_t *type);
50 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
54 const declaration_t *declaration = & value_numbers[pos]->declaration;
56 print_warning_prefix(declaration->source_position);
57 fprintf(stderr, "variable '%s' might be used uninitialized\n",
58 declaration->symbol->string);
60 fprintf(stderr, "Some variable might be used uninitialized\n");
61 return new_r_Unknown(irg, mode);
64 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
66 const source_position_t *pos = (const source_position_t*) dbg;
69 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
73 const char *retrieve_dbg(const dbg_info *dbg, unsigned *line)
75 const source_position_t *pos = (const source_position_t*) dbg;
80 return pos->input_name;
83 void init_ast2firm(void)
85 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
86 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
87 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
89 ir_type_int = get_ir_type(type_int);
90 ir_type_const_char = get_ir_type(type_const_char);
91 ir_type_void = get_ir_type(type_int); /* we don't have a real void
93 ir_type_void_ptr = new_type_pointer(new_id_from_str("void_ptr"),
94 ir_type_void, mode_P_data);
96 type_void->firm_type = ir_type_void;
99 void exit_ast2firm(void)
103 static unsigned unique_id = 0;
105 static ident *unique_ident(const char *tag)
109 snprintf(buf, sizeof(buf), "%s.%d", tag, unique_id);
111 return new_id_from_str(buf);
114 static ir_mode *get_atomic_mode(const atomic_type_t* atomic_type)
116 switch(atomic_type->atype) {
117 case ATOMIC_TYPE_SCHAR:
118 case ATOMIC_TYPE_CHAR:
120 case ATOMIC_TYPE_UCHAR:
122 case ATOMIC_TYPE_SHORT:
124 case ATOMIC_TYPE_USHORT:
126 case ATOMIC_TYPE_LONG:
127 case ATOMIC_TYPE_INT:
129 case ATOMIC_TYPE_ULONG:
130 case ATOMIC_TYPE_UINT:
132 case ATOMIC_TYPE_LONGLONG:
134 case ATOMIC_TYPE_ULONGLONG:
136 case ATOMIC_TYPE_FLOAT:
138 case ATOMIC_TYPE_DOUBLE:
140 case ATOMIC_TYPE_LONG_DOUBLE:
142 case ATOMIC_TYPE_BOOL:
144 #ifdef PROVIDE_COMPLEX
145 case ATOMIC_TYPE_FLOAT_COMPLEX:
146 case ATOMIC_TYPE_DOUBLE_COMPLEX:
147 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
148 panic("complex lowering not implemented yet");
150 case ATOMIC_TYPE_FLOAT_IMAGINARY:
151 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
152 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
153 panic("imaginary lowering not implemented yet");
156 case ATOMIC_TYPE_VOID:
157 /* firm has no real void... */
159 case ATOMIC_TYPE_INVALID:
162 panic("Encountered unknown atomic type");
166 static unsigned get_type_size(type_t *type);
168 static unsigned get_atomic_type_size(const atomic_type_t *type)
170 switch(type->atype) {
171 case ATOMIC_TYPE_CHAR:
172 case ATOMIC_TYPE_SCHAR:
173 case ATOMIC_TYPE_UCHAR:
176 case ATOMIC_TYPE_SHORT:
177 case ATOMIC_TYPE_USHORT:
180 case ATOMIC_TYPE_BOOL:
181 case ATOMIC_TYPE_INT:
182 case ATOMIC_TYPE_UINT:
183 case ATOMIC_TYPE_LONG:
184 case ATOMIC_TYPE_ULONG:
185 case ATOMIC_TYPE_FLOAT:
188 case ATOMIC_TYPE_LONGLONG:
189 case ATOMIC_TYPE_ULONGLONG:
190 case ATOMIC_TYPE_DOUBLE:
193 case ATOMIC_TYPE_LONG_DOUBLE:
196 case ATOMIC_TYPE_VOID:
199 case ATOMIC_TYPE_INVALID:
202 panic("Trying to determine size of invalid atomic type");
205 static unsigned get_compound_type_size(compound_type_t *type)
207 ir_type *irtype = get_ir_type(&type->type);
208 return get_type_size_bytes(irtype);
211 static unsigned get_array_type_size(array_type_t *type)
213 ir_type *irtype = get_ir_type(&type->type);
214 return get_type_size_bytes(irtype);
217 static unsigned get_type_size(type_t *type)
219 type = skip_typeref(type);
223 return get_atomic_type_size((const atomic_type_t*) type);
225 return get_mode_size_bytes(mode_Is);
226 case TYPE_COMPOUND_UNION:
227 case TYPE_COMPOUND_STRUCT:
228 return get_compound_type_size((compound_type_t*) type);
230 /* just a pointer to the function */
231 return get_mode_size_bytes(mode_P_code);
233 return get_mode_size_bytes(mode_P_data);
235 return get_array_type_size((array_type_t*) type);
242 panic("Trying to determine size of invalid type");
245 static unsigned count_parameters(const function_type_t *function_type)
249 function_parameter_t *parameter = function_type->parameters;
250 for ( ; parameter != NULL; parameter = parameter->next) {
260 static long fold_constant(const expression_t *expression);
262 static ir_type *create_atomic_type(const atomic_type_t *type)
264 ir_mode *mode = get_atomic_mode(type);
265 ident *id = get_mode_ident(mode);
266 ir_type *irtype = new_type_primitive(id, mode);
271 static ir_type *create_method_type(const function_type_t *function_type)
273 type_t *result_type = function_type->result_type;
275 ident *id = unique_ident("functiontype");
276 int n_parameters = count_parameters(function_type);
277 int n_results = result_type == type_void ? 0 : 1;
278 ir_type *irtype = new_type_method(id, n_parameters, n_results);
280 if(result_type != type_void) {
281 ir_type *restype = get_ir_type(result_type);
282 set_method_res_type(irtype, 0, restype);
285 function_parameter_t *parameter = function_type->parameters;
287 for( ; parameter != NULL; parameter = parameter->next) {
288 ir_type *p_irtype = get_ir_type(parameter->type);
289 set_method_param_type(irtype, n, p_irtype);
293 if(function_type->variadic || function_type->unspecified_parameters) {
294 set_method_variadicity(irtype, variadicity_variadic);
300 static ir_type *create_pointer_type(pointer_type_t *type)
302 type_t *points_to = type->points_to;
303 ir_type *ir_points_to;
304 /* Avoid endless recursion if the points_to type contains this poiner type
305 * again (might be a struct). We therefore first create a void* pointer
306 * and then set the real points_to type
308 ir_type *ir_type = new_type_pointer(unique_ident("pointer"),
309 ir_type_void, mode_P_data);
310 type->type.firm_type = ir_type;
312 ir_points_to = get_ir_type(points_to);
313 set_pointer_points_to_type(ir_type, ir_points_to);
318 static ir_type *create_array_type(array_type_t *type)
320 type_t *element_type = type->element_type;
321 ir_type *ir_element_type = get_ir_type(element_type);
323 ident *id = unique_ident("array");
324 ir_type *ir_type = new_type_array(id, 1, ir_element_type);
326 if(type->size != NULL) {
327 int n_elements = fold_constant(type->size);
329 set_array_bounds_int(ir_type, 0, 0, n_elements);
331 size_t elemsize = get_type_size_bytes(ir_element_type);
332 int align = get_type_alignment_bytes(ir_element_type);
333 if(elemsize % align > 0) {
334 elemsize += align - (elemsize % align);
336 set_type_size_bytes(ir_type, n_elements * elemsize);
337 set_type_alignment_bytes(ir_type, align);
338 set_type_state(ir_type, layout_fixed);
344 #define INVALID_TYPE ((ir_type_ptr)-1)
346 static ir_type *create_struct_type(compound_type_t *type)
348 symbol_t *symbol = type->declaration->symbol;
351 id = unique_ident(symbol->string);
353 id = unique_ident("__anonymous_struct");
355 ir_type *ir_type = new_type_struct(id);
357 type->type.firm_type = ir_type;
361 declaration_t *entry = type->declaration->context.declarations;
362 for( ; entry != NULL; entry = entry->next) {
363 if(entry->namespace != NAMESPACE_NORMAL)
366 ident *ident = new_id_from_str(entry->symbol->string);
367 ir_type_ptr entry_ir_type = get_ir_type(entry->type);
369 int entry_size = get_type_size_bytes(entry_ir_type);
370 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
371 int misalign = offset % entry_alignment;
374 ir_entity *entity = new_entity(ir_type, ident, entry_ir_type);
375 set_entity_offset(entity, offset);
376 add_struct_member(ir_type, entity);
377 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
378 entry->v.entity = entity;
380 offset += entry_size;
381 if(entry_alignment > align_all) {
382 if(entry_alignment % align_all != 0) {
383 panic("Uneven alignments not supported yet");
385 align_all = entry_alignment;
389 int misalign = offset % align_all;
391 set_type_alignment_bytes(ir_type, align_all);
392 set_type_size_bytes(ir_type, offset);
393 set_type_state(ir_type, layout_fixed);
398 static ir_type *create_union_type(compound_type_t *type)
400 declaration_t *declaration = type->declaration;
401 symbol_t *symbol = declaration->symbol;
404 id = unique_ident(symbol->string);
406 id = unique_ident("__anonymous_union");
408 ir_type *ir_type = new_type_union(id);
410 type->type.firm_type = ir_type;
414 declaration_t *entry = declaration->context.declarations;
415 for( ; entry != NULL; entry = entry->next) {
416 if(entry->namespace != NAMESPACE_NORMAL)
419 ident *ident = new_id_from_str(entry->symbol->string);
420 ir_type_ptr entry_ir_type = get_ir_type(entry->type);
422 int entry_size = get_type_size_bytes(entry_ir_type);
423 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
425 ir_entity *entity = new_entity(ir_type, ident, entry_ir_type);
426 add_union_member(ir_type, entity);
427 set_entity_offset(entity, 0);
428 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
429 entry->v.entity = entity;
431 if(entry_size > size) {
434 if(entry_alignment > align_all) {
435 if(entry_alignment % align_all != 0) {
436 panic("Uneven alignments not supported yet");
438 align_all = entry_alignment;
442 set_type_alignment_bytes(ir_type, align_all);
443 set_type_size_bytes(ir_type, size);
444 set_type_state(ir_type, layout_fixed);
449 static ir_type *get_ir_type(type_t *type)
451 assert(type != NULL);
453 type = skip_typeref(type);
455 if(type->firm_type != NULL) {
456 assert(type->firm_type != INVALID_TYPE);
457 return type->firm_type;
460 ir_type *firm_type = NULL;
463 firm_type = create_atomic_type((atomic_type_t*) type);
466 firm_type = create_method_type((function_type_t*) type);
469 firm_type = create_pointer_type((pointer_type_t*) type);
472 firm_type = create_array_type((array_type_t*) type);
474 case TYPE_COMPOUND_STRUCT:
475 firm_type = create_struct_type((compound_type_t*) type);
477 case TYPE_COMPOUND_UNION:
478 firm_type = create_union_type((compound_type_t*) type);
481 firm_type = ir_type_int;
489 if(firm_type == NULL)
490 panic("unknown type found");
492 type->firm_type = firm_type;
496 static inline ir_mode *get_ir_mode(type_t *type)
498 ir_type *irtype = get_ir_type(type);
500 /* firm doesn't report a mode for arrays somehow... */
501 if(is_Array_type(irtype)) {
505 ir_mode *mode = get_type_mode(irtype);
506 assert(mode != NULL);
510 static ir_entity* get_function_entity(declaration_t *declaration)
512 if(declaration->declaration_type == DECLARATION_TYPE_FUNCTION)
513 return declaration->v.entity;
514 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
516 symbol_t *symbol = declaration->symbol;
517 ident *id = new_id_from_str(symbol->string);
519 ir_type *global_type = get_glob_type();
520 ir_type *ir_type_method = get_ir_type(declaration->type);
521 assert(is_Method_type(ir_type_method));
523 ir_entity *entity = new_entity(global_type, id, ir_type_method);
524 set_entity_ld_ident(entity, id);
525 if(declaration->storage_class == STORAGE_CLASS_STATIC
526 || declaration->is_inline) {
527 set_entity_visibility(entity, visibility_local);
528 } else if(declaration->init.statement != NULL) {
529 set_entity_visibility(entity, visibility_external_visible);
531 set_entity_visibility(entity, visibility_external_allocated);
534 declaration->declaration_type = DECLARATION_TYPE_FUNCTION;
535 declaration->v.entity = entity;
542 static ir_node *expression_to_firm(const expression_t *expression);
543 static ir_node *expression_to_modeb(const expression_t *expression);
545 static dbg_info *get_dbg_info(const source_position_t *pos)
547 return (dbg_info*) pos;
550 static ir_node *const_to_firm(const const_t *cnst)
552 dbg_info *dbgi = get_dbg_info(&cnst->expression.source_position);
553 ir_mode *mode = get_ir_mode(cnst->expression.datatype);
556 if(mode_is_float(mode)) {
557 tv = new_tarval_from_double(cnst->v.float_value, mode);
559 tv = new_tarval_from_long(cnst->v.int_value, mode);
562 return new_d_Const(dbgi, mode, tv);
565 static ir_node *create_symconst(dbg_info *dbgi, ir_entity *entity)
567 assert(entity != NULL);
568 union symconst_symbol sym;
569 sym.entity_p = entity;
570 return new_d_SymConst(dbgi, sym, symconst_addr_ent);
573 static ir_node *string_literal_to_firm(const string_literal_t* literal)
575 ir_type *global_type = get_glob_type();
576 ir_type *type = new_type_array(unique_ident("strtype"), 1,
579 ident *id = unique_ident("Lstr");
580 ir_entity *entity = new_entity(global_type, id, type);
581 set_entity_ld_ident(entity, id);
582 set_entity_variability(entity, variability_constant);
584 ir_type *elem_type = ir_type_const_char;
585 ir_mode *mode = get_type_mode(elem_type);
587 const char *string = literal->value;
588 size_t slen = strlen(string) + 1;
590 set_array_lower_bound_int(type, 0, 0);
591 set_array_upper_bound_int(type, 0, slen);
592 set_type_size_bytes(type, slen);
593 set_type_state(type, layout_fixed);
595 tarval **tvs = xmalloc(slen * sizeof(tvs[0]));
596 for(size_t i = 0; i < slen; ++i) {
597 tvs[i] = new_tarval_from_long(string[i], mode);
600 set_array_entity_values(entity, tvs, slen);
603 dbg_info *dbgi = get_dbg_info(&literal->expression.source_position);
605 return create_symconst(dbgi, entity);
608 static ir_node *load_from_expression_addr(type_t *type, ir_node *addr,
611 ir_mode *mode = get_ir_mode(type);
612 ir_node *memory = get_store();
613 ir_node *load = new_d_Load(dbgi, memory, addr, mode);
614 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
615 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
621 static ir_node *deref_address(type_t *const type, ir_node *const addr,
622 dbg_info *const dbgi)
624 switch (type->type) {
626 case TYPE_COMPOUND_STRUCT:
627 case TYPE_COMPOUND_UNION:
631 return load_from_expression_addr(type, addr, dbgi);
635 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
637 dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
638 declaration_t *declaration = ref->declaration;
639 type_t *type = skip_typeref(declaration->type);
641 switch((declaration_type_t) declaration->declaration_type) {
642 case DECLARATION_TYPE_UNKNOWN:
644 case DECLARATION_TYPE_LOCAL_VARIABLE: {
645 ir_mode *mode = get_ir_mode(type);
646 return get_value(declaration->v.value_number, mode);
648 case DECLARATION_TYPE_FUNCTION: {
649 return create_symconst(dbgi, declaration->v.entity);
651 case DECLARATION_TYPE_GLOBAL_VARIABLE: {
652 ir_entity *entity = declaration->v.entity;
653 ir_node *symconst = create_symconst(dbgi, entity);
654 return deref_address(type, symconst, dbgi);
656 case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: {
657 ir_entity *entity = declaration->v.entity;
658 ir_node *frame = get_irg_frame(current_ir_graph);
659 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
660 return deref_address(type, sel, dbgi);
663 case DECLARATION_TYPE_COMPOUND_MEMBER:
664 case DECLARATION_TYPE_LABEL_BLOCK:
665 panic("not implemented reference type");
668 panic("reference to declaration with unknown type found");
671 static ir_node *reference_addr(const reference_expression_t *ref)
673 dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
674 declaration_t *declaration = ref->declaration;
676 switch((declaration_type_t) declaration->declaration_type) {
677 case DECLARATION_TYPE_UNKNOWN:
679 case DECLARATION_TYPE_LOCAL_VARIABLE:
680 panic("local variable without entity has no address");
681 case DECLARATION_TYPE_FUNCTION: {
682 return create_symconst(dbgi, declaration->v.entity);
684 case DECLARATION_TYPE_GLOBAL_VARIABLE: {
685 ir_entity *entity = declaration->v.entity;
686 ir_node *symconst = create_symconst(dbgi, entity);
689 case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: {
690 ir_entity *entity = declaration->v.entity;
691 ir_node *frame = get_irg_frame(current_ir_graph);
692 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
696 case DECLARATION_TYPE_COMPOUND_MEMBER:
697 case DECLARATION_TYPE_LABEL_BLOCK:
698 panic("not implemented reference type");
701 panic("reference to declaration with unknown type found");
704 static ir_node *call_expression_to_firm(const call_expression_t *call)
706 assert(get_cur_block() != NULL);
708 expression_t *function = call->function;
709 ir_node *callee = expression_to_firm(function);
711 assert(function->datatype->type == TYPE_FUNCTION);
712 function_type_t *function_type = (function_type_t*) function->datatype;
714 int n_parameters = 0;
715 call_argument_t *argument = call->arguments;
716 for( ; argument != NULL; argument = argument->next) {
720 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
721 ir_type *new_method_type = NULL;
722 if(function_type->variadic || function_type->unspecified_parameters) {
723 /* we need to construct a new method type matching the call
725 int n_res = get_method_n_ress(ir_method_type);
726 new_method_type = new_type_method(unique_ident("calltype"),
727 n_parameters, n_res);
728 set_method_calling_convention(new_method_type,
729 get_method_calling_convention(ir_method_type));
730 set_method_additional_properties(new_method_type,
731 get_method_additional_properties(ir_method_type));
733 for(int i = 0; i < n_res; ++i) {
734 set_method_res_type(new_method_type, i,
735 get_method_res_type(ir_method_type, i));
738 ir_node *in[n_parameters];
740 argument = call->arguments;
742 for( ; argument != NULL; argument = argument->next) {
743 expression_t *expression = argument->expression;
744 ir_node *arg_node = expression_to_firm(expression);
747 if(new_method_type != NULL) {
748 ir_type *irtype = get_ir_type(expression->datatype);
749 set_method_param_type(new_method_type, n, irtype);
754 assert(n == n_parameters);
756 if(new_method_type != NULL)
757 ir_method_type = new_method_type;
759 dbg_info *dbgi = get_dbg_info(&call->expression.source_position);
760 ir_node *store = get_store();
761 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
763 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
766 type_t *result_type = function_type->result_type;
767 ir_node *result = NULL;
768 if(result_type != type_void) {
769 ir_mode *mode = get_ir_mode(result_type);
770 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
771 result = new_d_Proj(dbgi, resproj, mode, 0);
777 static ir_node *expression_to_addr(const expression_t *expression);
779 static void set_value_for_expression(const expression_t *expression,
782 if(expression->type == EXPR_REFERENCE) {
783 reference_expression_t *ref = (reference_expression_t*) expression;
785 declaration_t *declaration = ref->declaration;
786 assert(declaration->declaration_type != DECLARATION_TYPE_UNKNOWN);
787 if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
788 set_value(declaration->v.value_number, value);
793 dbg_info *dbgi = get_dbg_info(&expression->source_position);
794 ir_node *addr = expression_to_addr(expression);
795 assert(get_irn_mode(value) == get_ir_mode(expression->datatype));
796 ir_node *memory = get_store();
797 ir_node *store = new_d_Store(dbgi, memory, addr, value);
798 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
799 set_store(store_mem);
802 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
804 ir_mode *value_mode = get_irn_mode(value);
806 if(value_mode == dest_mode)
809 if(dest_mode == mode_b) {
810 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
811 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
812 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
816 return new_d_Conv(dbgi, value, dest_mode);
819 static ir_node *create_incdec(const unary_expression_t *expression)
821 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
822 type_t *type = expression->expression.datatype;
823 ir_mode *mode = get_ir_mode(type);
824 expression_t *value = expression->value;
826 ir_node *value_node = expression_to_firm(value);
829 if(type->type == TYPE_POINTER) {
830 pointer_type_t *pointer_type = (pointer_type_t*) type;
831 unsigned elem_size = get_type_size(pointer_type->points_to);
832 offset = new_Const_long(mode_Is, elem_size);
834 assert(is_type_arithmetic(type));
835 offset = new_Const(mode, get_mode_one(mode));
839 switch(expression->type) {
840 case UNEXPR_POSTFIX_INCREMENT: {
841 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
842 set_value_for_expression(value, new_value);
845 case UNEXPR_POSTFIX_DECREMENT: {
846 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
847 set_value_for_expression(value, new_value);
850 case UNEXPR_PREFIX_INCREMENT: {
851 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
852 set_value_for_expression(value, new_value);
855 case UNEXPR_PREFIX_DECREMENT: {
856 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
857 set_value_for_expression(value, new_value);
861 panic("no incdec expr in create_incdec");
867 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
869 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
870 type_t *type = expression->expression.datatype;
871 ir_mode *mode = get_ir_mode(type);
873 if(expression->type == UNEXPR_TAKE_ADDRESS)
874 return expression_to_addr(expression->value);
876 const expression_t *value = expression->value;
877 ir_node *value_node = expression_to_firm(value);
879 switch(expression->type) {
881 return new_d_Minus(dbgi, value_node, mode);
884 case UNEXPR_BITWISE_NEGATE:
885 return new_d_Not(dbgi, value_node, mode);
887 if(get_irn_mode(value_node) != mode_b) {
888 value_node = create_conv(dbgi, value_node, mode_b);
890 value_node = new_d_Not(dbgi, value_node, mode_b);
892 value_node = create_conv(dbgi, value_node, mode);
895 case UNEXPR_DEREFERENCE:
896 return load_from_expression_addr(type, value_node, dbgi);
897 case UNEXPR_POSTFIX_INCREMENT:
898 case UNEXPR_POSTFIX_DECREMENT:
899 case UNEXPR_PREFIX_INCREMENT:
900 case UNEXPR_PREFIX_DECREMENT:
901 return create_incdec(expression);
903 return create_conv(dbgi, value_node, mode);
905 case UNEXPR_TAKE_ADDRESS:
909 panic("invalid UNEXPR type found");
912 static long get_pnc(binary_expression_type_t type)
915 case BINEXPR_EQUAL: return pn_Cmp_Eq;
916 case BINEXPR_NOTEQUAL: return pn_Cmp_Lg;
917 case BINEXPR_LESS: return pn_Cmp_Lt;
918 case BINEXPR_LESSEQUAL: return pn_Cmp_Le;
919 case BINEXPR_GREATER: return pn_Cmp_Gt;
920 case BINEXPR_GREATEREQUAL: return pn_Cmp_Ge;
924 panic("trying to get pn_Cmp from non-comparison binexpr type");
927 static ir_node *create_lazy_op(const binary_expression_t *expression)
929 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
931 bool is_or = (expression->type == BINEXPR_LOGICAL_OR);
932 assert(is_or || expression->type == BINEXPR_LOGICAL_AND);
934 ir_node *val1 = expression_to_modeb(expression->left);
935 ir_node *cond = new_d_Cond(dbgi, val1);
936 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
937 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
939 ir_node *fallthrough_block = new_immBlock();
942 ir_node *calc_val2_block = new_immBlock();
944 add_immBlock_pred(calc_val2_block, false_proj);
946 add_immBlock_pred(calc_val2_block, true_proj);
949 mature_immBlock(calc_val2_block);
951 ir_node *val2 = expression_to_modeb(expression->right);
952 if(get_cur_block() != NULL) {
953 ir_node *jmp = new_d_Jmp(dbgi);
954 add_immBlock_pred(fallthrough_block, jmp);
960 constb = new_d_Const(dbgi, mode_b, get_tarval_b_true());
961 add_immBlock_pred(fallthrough_block, true_proj);
963 constb = new_d_Const(dbgi, mode_b, get_tarval_b_false());
964 add_immBlock_pred(fallthrough_block, false_proj);
966 mature_immBlock(fallthrough_block);
968 set_cur_block(fallthrough_block);
970 ir_node *in[2] = { val2, constb };
971 ir_node *val = new_d_Phi(dbgi, 2, in, mode_b);
976 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
977 ir_node *right, ir_mode *mode);
979 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
980 create_arithmetic_func func)
982 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
983 ir_node *left = expression_to_firm(expression->left);
984 ir_node *right = expression_to_firm(expression->right);
985 type_t *type = expression->right->datatype;
986 /* be careful with the modes, because in asithmetic assign nodes only
987 * the right operand has the mode of the arithmetic alread */
988 ir_mode *mode = get_ir_mode(type);
989 left = create_conv(dbgi, left, mode);
990 ir_node *res = func(dbgi, left, right, mode);
995 static ir_node *create_arithmetic_assign_binop(
996 const binary_expression_t *expression, create_arithmetic_func func)
998 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
999 ir_node *value = create_arithmetic_binop(expression, func);
1000 type_t *type = expression->expression.datatype;
1001 ir_mode *mode = get_ir_mode(type);
1003 assert(type->type != TYPE_POINTER);
1005 value = create_conv(dbgi, value, mode);
1006 set_value_for_expression(expression->left, value);
1011 static ir_node *create_add(const binary_expression_t *expression)
1013 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1014 ir_node *left = expression_to_firm(expression->left);
1015 ir_node *right = expression_to_firm(expression->right);
1016 type_t *type = expression->expression.datatype;
1017 ir_mode *mode = get_ir_mode(type);
1019 expression_t *expr_left = expression->left;
1020 expression_t *expr_right = expression->right;
1021 type_t *type_left = skip_typeref(expr_left->datatype);
1022 type_t *type_right = skip_typeref(expr_right->datatype);
1024 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1025 return new_d_Add(dbgi, left, right, mode);
1030 pointer_type_t *pointer_type;
1031 if(type_left->type == TYPE_POINTER) {
1034 pointer_type = (pointer_type_t*) type_left;
1036 assert(type_right->type == TYPE_POINTER);
1039 pointer_type = (pointer_type_t*) type_right;
1042 type_t *points_to = pointer_type->points_to;
1043 unsigned elem_size = get_type_size(points_to);
1045 assert(elem_size >= 1);
1047 integer = create_conv(dbgi, integer, mode_Is);
1048 ir_node *cnst = new_Const_long(mode_Is, (int) elem_size);
1049 ir_node *mul = new_d_Mul(dbgi, integer, cnst, mode_Is);
1053 ir_node *res = new_d_Add(dbgi, pointer, integer, mode);
1058 static ir_node *create_sub(const binary_expression_t *expression)
1060 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1061 ir_node *left = expression_to_firm(expression->left);
1062 ir_node *right = expression_to_firm(expression->right);
1063 type_t *type = expression->expression.datatype;
1064 ir_mode *mode = get_ir_mode(type);
1066 expression_t *expr_left = expression->left;
1067 expression_t *expr_right = expression->right;
1068 type_t *type_left = skip_typeref(expr_left->datatype);
1069 type_t *type_right = skip_typeref(expr_right->datatype);
1071 if((is_type_arithmetic(type_left) && is_type_arithmetic(type_right))
1072 || (type_left->type == TYPE_POINTER
1073 && type_right->type == TYPE_POINTER)) {
1074 return new_d_Sub(dbgi, left, right, mode);
1077 assert(type_right->type == TYPE_POINTER);
1078 ir_node *pointer = left;
1079 ir_node *integer = right;
1080 pointer_type_t *pointer_type = (pointer_type_t*) type_right;
1082 type_t *points_to = pointer_type->points_to;
1083 unsigned elem_size = get_type_size(points_to);
1085 assert(elem_size >= 1);
1087 ir_node *cnst = new_Const_long(mode_Iu, elem_size);
1088 ir_node *mul = new_d_Mul(dbgi, integer, cnst, mode_Iu);
1092 ir_node *res = new_d_Sub(dbgi, pointer, integer, mode);
1097 static ir_node *create_shift(const binary_expression_t *expression)
1099 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1100 ir_node *left = expression_to_firm(expression->left);
1101 ir_node *right = expression_to_firm(expression->right);
1102 type_t *type = expression->expression.datatype;
1103 ir_mode *mode = get_ir_mode(type);
1105 /* firm always wants the shift count to be unsigned */
1106 right = create_conv(dbgi, right, mode_Iu);
1110 switch(expression->type) {
1111 case BINEXPR_SHIFTLEFT:
1112 res = new_d_Shl(dbgi, left, right, mode);
1114 case BINEXPR_SHIFTRIGHT: {
1115 expression_t *expr_left = expression->left;
1116 type_t *type_left = skip_typeref(expr_left->datatype);
1118 if(is_type_signed(type_left)) {
1119 res = new_d_Shrs(dbgi, left, right, mode);
1121 res = new_d_Shr(dbgi, left, right, mode);
1126 panic("create shift op called for non-shift op");
1133 static ir_node *create_divmod(const binary_expression_t *expression)
1135 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1136 ir_node *left = expression_to_firm(expression->left);
1137 ir_node *right = expression_to_firm(expression->right);
1138 ir_node *pin = new_Pin(new_NoMem());
1139 type_t *type = expression->expression.datatype;
1140 ir_mode *mode = get_ir_mode(type);
1144 switch (expression->type) {
1146 case BINEXPR_DIV_ASSIGN:
1147 if(mode_is_float(mode)) {
1148 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
1149 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
1151 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
1152 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
1157 case BINEXPR_MOD_ASSIGN:
1158 assert(!mode_is_float(mode));
1159 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
1160 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
1163 default: panic("unexpected binary expression type in create_divmod()");
1169 static ir_node *create_arithmetic_assign_divmod(
1170 const binary_expression_t *expression)
1172 ir_node * value = create_divmod(expression);
1173 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1174 type_t *const type = expression->expression.datatype;
1175 ir_mode *const mode = get_ir_mode(type);
1177 assert(type->type != TYPE_POINTER);
1179 value = create_conv(dbgi, value, mode);
1180 set_value_for_expression(expression->left, value);
1186 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
1188 binary_expression_type_t type = expression->type;
1191 case BINEXPR_NOTEQUAL:
1193 case BINEXPR_LESSEQUAL:
1194 case BINEXPR_GREATER:
1195 case BINEXPR_GREATEREQUAL: {
1196 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1197 ir_node *left = expression_to_firm(expression->left);
1198 ir_node *right = expression_to_firm(expression->right);
1199 ir_node *cmp = new_d_Cmp(dbgi, left, right);
1200 long pnc = get_pnc(type);
1201 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
1204 case BINEXPR_ASSIGN: {
1205 ir_node *right = expression_to_firm(expression->right);
1206 set_value_for_expression(expression->left, right);
1210 return create_add(expression);
1212 return create_sub(expression);
1214 return create_arithmetic_binop(expression, new_d_Mul);
1215 case BINEXPR_BITWISE_AND:
1216 return create_arithmetic_binop(expression, new_d_And);
1217 case BINEXPR_BITWISE_OR:
1218 return create_arithmetic_binop(expression, new_d_Or);
1219 case BINEXPR_BITWISE_XOR:
1220 return create_arithmetic_binop(expression, new_d_Eor);
1221 case BINEXPR_SHIFTLEFT:
1222 case BINEXPR_SHIFTRIGHT:
1223 return create_shift(expression);
1226 return create_divmod(expression);
1227 case BINEXPR_LOGICAL_AND:
1228 case BINEXPR_LOGICAL_OR:
1229 return create_lazy_op(expression);
1231 expression_to_firm(expression->left);
1232 return expression_to_firm(expression->right);
1233 case BINEXPR_ADD_ASSIGN:
1234 return create_arithmetic_assign_binop(expression, new_d_Add);
1235 case BINEXPR_SUB_ASSIGN:
1236 return create_arithmetic_assign_binop(expression, new_d_Sub);
1237 case BINEXPR_MUL_ASSIGN:
1238 return create_arithmetic_assign_binop(expression, new_d_Mul);
1239 case BINEXPR_DIV_ASSIGN:
1240 return create_arithmetic_assign_divmod(expression);
1241 case BINEXPR_BITWISE_AND_ASSIGN:
1242 return create_arithmetic_assign_binop(expression, new_d_And);
1243 case BINEXPR_BITWISE_OR_ASSIGN:
1244 return create_arithmetic_assign_binop(expression, new_d_Or);
1245 case BINEXPR_BITWISE_XOR_ASSIGN:
1246 return create_arithmetic_assign_binop(expression, new_d_Eor);
1247 case BINEXPR_SHIFTLEFT_ASSIGN:
1248 return create_arithmetic_assign_binop(expression, new_d_Shl);
1249 case BINEXPR_SHIFTRIGHT_ASSIGN:
1250 return create_arithmetic_assign_binop(expression, new_d_Shr);
1252 panic("TODO binexpr type");
1256 static ir_node *array_access_addr(const array_access_expression_t *expression)
1258 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1260 ir_node *base_addr = expression_to_firm(expression->array_ref);
1261 ir_node *offset = expression_to_firm(expression->index);
1262 offset = create_conv(dbgi, offset, mode_Iu);
1264 unsigned elem_size = get_type_size(expression->expression.datatype);
1265 ir_node *elem_size_const = new_Const_long(mode_Iu, elem_size);
1266 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
1268 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P);
1273 static ir_node *array_access_to_firm(
1274 const array_access_expression_t *expression)
1276 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1277 ir_node *addr = array_access_addr(expression);
1278 type_t *type = expression->expression.datatype;
1279 return deref_address(type, addr, dbgi);
1282 static ir_node *sizeof_to_firm(const sizeof_expression_t *expression)
1284 type_t *type = expression->type;
1286 type = expression->size_expression->datatype;
1287 assert(type != NULL);
1290 ir_mode *mode = get_ir_mode(expression->expression.datatype);
1291 unsigned size = get_type_size(type);
1292 ir_node *size_node = new_Const_long(mode, size);
1297 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
1299 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1301 ir_node *condition = expression_to_modeb(expression->condition);
1302 ir_node *cond = new_d_Cond(dbgi, condition);
1303 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1304 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1306 /* create the true block */
1307 ir_node *true_block = new_immBlock();
1308 add_immBlock_pred(true_block, true_proj);
1309 mature_immBlock(true_block);
1311 ir_node *true_val = expression_to_firm(expression->true_expression);
1312 ir_node *true_jmp = new_Jmp();
1314 /* create the false block */
1315 ir_node *false_block = new_immBlock();
1316 add_immBlock_pred(false_block, false_proj);
1317 mature_immBlock(false_block);
1319 ir_node *false_val = expression_to_firm(expression->false_expression);
1320 ir_node *false_jmp = new_Jmp();
1322 /* create the common block */
1323 ir_node *common_block = new_immBlock();
1324 add_immBlock_pred(common_block, true_jmp);
1325 add_immBlock_pred(common_block, false_jmp);
1326 mature_immBlock(common_block);
1328 ir_node *in[2] = { true_val, false_val };
1329 ir_mode *mode = get_irn_mode(true_val);
1330 assert(get_irn_mode(false_val) == mode);
1331 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1336 static ir_node *select_addr(const select_expression_t *expression)
1338 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1340 ir_node *compound_addr = expression_to_firm(expression->compound);
1342 declaration_t *entry = expression->compound_entry;
1343 assert(entry->declaration_type == DECLARATION_TYPE_COMPOUND_MEMBER);
1344 ir_entity *entity = entry->v.entity;
1346 assert(entity != NULL);
1348 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
1353 static ir_node *select_to_firm(const select_expression_t *expression)
1355 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1356 ir_node *addr = select_addr(expression);
1357 type_t *type = expression->expression.datatype;
1358 return deref_address(type, addr, dbgi);
1361 static ir_node *dereference_addr(const unary_expression_t *const expression)
1363 assert(expression->type == UNEXPR_DEREFERENCE);
1364 return expression_to_firm(expression->value);
1367 static ir_node *expression_to_addr(const expression_t *expression)
1369 switch(expression->type) {
1370 case EXPR_REFERENCE:
1371 return reference_addr((const reference_expression_t*) expression);
1372 case EXPR_ARRAY_ACCESS:
1373 return array_access_addr((const array_access_expression_t*) expression);
1375 return select_addr((const select_expression_t*) expression);
1377 const unary_expression_t *const unary_expr =
1378 (const unary_expression_t*)expression;
1379 if (unary_expr->type == UNEXPR_DEREFERENCE) {
1380 return dereference_addr(unary_expr);
1387 panic("trying to get address of non-lvalue");
1390 static ir_node *_expression_to_firm(const expression_t *expression)
1392 switch(expression->type) {
1394 return const_to_firm((const const_t*) expression);
1395 case EXPR_STRING_LITERAL:
1396 return string_literal_to_firm((const string_literal_t*) expression);
1397 case EXPR_REFERENCE:
1398 return reference_expression_to_firm(
1399 (const reference_expression_t*) expression);
1401 return call_expression_to_firm((const call_expression_t*) expression);
1403 return unary_expression_to_firm((const unary_expression_t*) expression);
1405 return binary_expression_to_firm(
1406 (const binary_expression_t*) expression);
1407 case EXPR_ARRAY_ACCESS:
1408 return array_access_to_firm(
1409 (const array_access_expression_t*) expression);
1411 return sizeof_to_firm((const sizeof_expression_t*) expression);
1412 case EXPR_CONDITIONAL:
1413 return conditional_to_firm((const conditional_expression_t*)expression);
1415 return select_to_firm((const select_expression_t*) expression);
1418 case EXPR_PRETTY_FUNCTION:
1420 case EXPR_STATEMENT:
1421 case EXPR_BUILTIN_SYMBOL:
1422 panic("unimplemented expression found");
1428 panic("invalid expression found");
1431 static ir_node *expression_to_firm(const expression_t *expression)
1433 ir_node *res = _expression_to_firm(expression);
1435 if(res != NULL && get_irn_mode(res) == mode_b) {
1436 ir_mode *mode = get_ir_mode(expression->datatype);
1437 res = create_conv(NULL, res, mode);
1443 static ir_node *expression_to_modeb(const expression_t *expression)
1445 ir_node *res = _expression_to_firm(expression);
1446 res = create_conv(NULL, res, mode_b);
1451 static void statement_to_firm(statement_t *statement);
1453 static void return_statement_to_firm(return_statement_t *statement)
1455 if(get_cur_block() == NULL)
1458 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1461 if(statement->return_value != NULL) {
1462 ir_node *retval = expression_to_firm(statement->return_value);
1466 ret = new_d_Return(dbgi, get_store(), 1, in);
1468 ret = new_d_Return(dbgi, get_store(), 0, NULL);
1470 ir_node *end_block = get_irg_end_block(current_ir_graph);
1471 add_immBlock_pred(end_block, ret);
1473 set_cur_block(NULL);
1476 static void compound_statement_to_firm(compound_statement_t *compound)
1478 statement_t *statement = compound->statements;
1479 for( ; statement != NULL; statement = statement->next) {
1480 //context2firm(&statement->context);
1481 statement_to_firm(statement);
1485 static void expression_statement_to_firm(expression_statement_t *statement)
1487 if(get_cur_block() == NULL)
1490 expression_to_firm(statement->expression);
1493 static void if_statement_to_firm(if_statement_t *statement)
1495 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1496 ir_node *condition = expression_to_modeb(statement->condition);
1498 /* make sure we have a mode_b condition */
1499 ir_node *cond = new_d_Cond(dbgi, condition);
1500 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1501 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1503 ir_node *fallthrough_block = new_immBlock();
1505 /* the true (blocks) */
1506 ir_node *true_block = new_immBlock();
1507 add_immBlock_pred(true_block, true_proj);
1508 mature_immBlock(true_block);
1510 statement_to_firm(statement->true_statement);
1511 if(get_cur_block() != NULL) {
1512 ir_node *jmp = new_Jmp();
1513 add_immBlock_pred(fallthrough_block, jmp);
1516 /* the false (blocks) */
1517 if(statement->false_statement != NULL) {
1518 ir_node *false_block = new_immBlock();
1519 add_immBlock_pred(false_block, false_proj);
1520 mature_immBlock(false_block);
1522 statement_to_firm(statement->false_statement);
1523 if(get_cur_block() != NULL) {
1524 ir_node *jmp = new_Jmp();
1525 add_immBlock_pred(fallthrough_block, jmp);
1528 add_immBlock_pred(fallthrough_block, false_proj);
1530 mature_immBlock(fallthrough_block);
1532 set_cur_block(fallthrough_block);
1535 static void while_statement_to_firm(while_statement_t *statement)
1537 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1539 ir_node *jmp = NULL;
1540 if(get_cur_block() != NULL) {
1544 /* create the header block */
1545 ir_node *header_block = new_immBlock();
1547 add_immBlock_pred(header_block, jmp);
1550 /* create the condition */
1551 ir_node *condition = expression_to_modeb(statement->condition);
1552 ir_node *cond = new_d_Cond(dbgi, condition);
1553 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1554 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1556 /* the false block */
1557 ir_node *false_block = new_immBlock();
1558 add_immBlock_pred(false_block, false_proj);
1561 ir_node *body_block = new_immBlock();
1562 add_immBlock_pred(body_block, true_proj);
1563 mature_immBlock(body_block);
1565 ir_node *old_continue_label = continue_label;
1566 ir_node *old_break_label = break_label;
1567 continue_label = header_block;
1568 break_label = false_block;
1570 statement_to_firm(statement->body);
1572 assert(continue_label == header_block);
1573 assert(break_label == false_block);
1574 continue_label = old_continue_label;
1575 break_label = old_break_label;
1577 if(get_cur_block() != NULL) {
1578 ir_node *jmp = new_Jmp();
1579 add_immBlock_pred(header_block, jmp);
1582 mature_immBlock(header_block);
1583 mature_immBlock(false_block);
1585 set_cur_block(false_block);
1588 static void do_while_statement_to_firm(do_while_statement_t *statement)
1590 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1592 ir_node *jmp = NULL;
1593 if(get_cur_block() != NULL) {
1597 /* create the header block */
1598 ir_node *header_block = new_immBlock();
1600 /* the false block */
1601 ir_node *false_block = new_immBlock();
1604 ir_node *body_block = new_immBlock();
1606 add_immBlock_pred(body_block, jmp);
1609 ir_node *old_continue_label = continue_label;
1610 ir_node *old_break_label = break_label;
1611 continue_label = header_block;
1612 break_label = false_block;
1614 statement_to_firm(statement->body);
1616 assert(continue_label == header_block);
1617 assert(break_label == false_block);
1618 continue_label = old_continue_label;
1619 break_label = old_break_label;
1621 if(get_cur_block() == NULL) {
1622 mature_immBlock(header_block);
1623 mature_immBlock(body_block);
1624 mature_immBlock(false_block);
1628 ir_node *body_jmp = new_Jmp();
1629 add_immBlock_pred(header_block, body_jmp);
1630 mature_immBlock(header_block);
1632 /* create the condition */
1633 set_cur_block(header_block);
1634 ir_node *condition = expression_to_modeb(statement->condition);
1635 ir_node *cond = new_d_Cond(dbgi, condition);
1636 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1637 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1639 add_immBlock_pred(body_block, true_proj);
1640 mature_immBlock(body_block);
1642 add_immBlock_pred(false_block, false_proj);
1643 mature_immBlock(false_block);
1645 set_cur_block(false_block);
1648 static void for_statement_to_firm(for_statement_t *statement)
1650 dbg_info *const dbgi = get_dbg_info(&statement->statement.source_position);
1652 ir_node *jmp = NULL;
1653 if (get_cur_block() != NULL) {
1654 if(statement->initialisation != NULL) {
1655 expression_to_firm(statement->initialisation);
1660 /* create the step block */
1661 ir_node *const step_block = new_immBlock();
1662 if (statement->step != NULL) {
1663 expression_to_firm(statement->step);
1665 ir_node *const step_jmp = new_Jmp();
1667 /* create the header block */
1668 ir_node *const header_block = new_immBlock();
1670 add_immBlock_pred(header_block, jmp);
1672 add_immBlock_pred(header_block, step_jmp);
1674 /* create the condition */
1676 ir_node *false_proj;
1677 if (statement->condition != NULL) {
1678 ir_node *const condition = expression_to_modeb(statement->condition);
1679 ir_node *const cond = new_d_Cond(dbgi, condition);
1680 true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1681 false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1683 keep_alive(header_block);
1684 true_proj = new_Jmp();
1688 /* the false block */
1689 ir_node *const false_block = new_immBlock();
1690 if (false_proj != NULL) {
1691 add_immBlock_pred(false_block, false_proj);
1695 ir_node *const body_block = new_immBlock();
1696 add_immBlock_pred(body_block, true_proj);
1697 mature_immBlock(body_block);
1699 ir_node *const old_continue_label = continue_label;
1700 ir_node *const old_break_label = break_label;
1701 continue_label = step_block;
1702 break_label = false_block;
1704 statement_to_firm(statement->body);
1706 assert(continue_label == step_block);
1707 assert(break_label == false_block);
1708 continue_label = old_continue_label;
1709 break_label = old_break_label;
1711 if (get_cur_block() != NULL) {
1712 ir_node *const jmp = new_Jmp();
1713 add_immBlock_pred(step_block, jmp);
1716 mature_immBlock(step_block);
1717 mature_immBlock(header_block);
1718 mature_immBlock(false_block);
1720 set_cur_block(false_block);
1723 static void create_declaration_entity(declaration_t *declaration,
1724 declaration_type_t declaration_type,
1725 ir_type *parent_type)
1727 ident *id = new_id_from_str(declaration->symbol->string);
1728 ir_type *irtype = get_ir_type(declaration->type);
1729 ir_entity *entity = new_entity(parent_type, id, irtype);
1730 set_entity_ld_ident(entity, id);
1732 declaration->declaration_type = declaration_type;
1733 declaration->v.entity = entity;
1734 set_entity_variability(entity, variability_uninitialized);
1735 /* TODO: visibility? */
1738 static void create_initializer(declaration_t *declaration)
1740 initializer_t *initializer = declaration->init.initializer;
1741 if(initializer == NULL)
1744 if(initializer->type == INITIALIZER_VALUE) {
1745 assert(initializer->designator == NULL);
1746 assert(initializer->next == NULL);
1747 ir_node *init_node = expression_to_firm(initializer->v.value);
1749 if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
1750 set_value(declaration->v.value_number, init_node);
1752 ir_entity *entity = declaration->v.entity;
1754 set_entity_variability(entity, variability_initialized);
1755 set_atomic_ent_value(entity, init_node);
1758 assert(initializer->type == INITIALIZER_LIST);
1759 panic("list initializer not supported yet");
1763 static void create_local_variable(declaration_t *declaration)
1765 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
1767 bool needs_entity = declaration->address_taken;
1768 type_t *type = skip_typeref(declaration->type);
1770 if(type->type == TYPE_ARRAY
1771 || type->type == TYPE_COMPOUND_STRUCT
1772 || type->type == TYPE_COMPOUND_UNION) {
1773 needs_entity = true;
1777 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
1778 create_declaration_entity(declaration,
1779 DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
1782 declaration->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
1783 declaration->v.value_number = next_value_number_function;
1784 ++next_value_number_function;
1787 create_initializer(declaration);
1790 static void declaration_statement_to_firm(declaration_statement_t *statement)
1792 declaration_t *declaration = statement->declarations_begin;
1793 declaration_t *end = statement->declarations_end->next;
1794 for( ; declaration != end; declaration = declaration->next) {
1795 type_t *type = declaration->type;
1797 switch(declaration->storage_class) {
1798 case STORAGE_CLASS_TYPEDEF:
1800 case STORAGE_CLASS_STATIC:
1801 panic("static local vars not implemented yet");
1802 case STORAGE_CLASS_ENUM_ENTRY:
1803 panic("enum entry declaration in local block found");
1804 case STORAGE_CLASS_EXTERN:
1805 panic("extern declaration in local block found");
1806 case STORAGE_CLASS_NONE:
1807 case STORAGE_CLASS_AUTO:
1808 case STORAGE_CLASS_REGISTER:
1809 if(type->type == TYPE_FUNCTION) {
1810 panic("nested functions not supported yet");
1812 create_local_variable(declaration);
1816 panic("invalid storage class found");
1820 static void create_jump_statement(const statement_t *statement,
1821 ir_node *target_block)
1823 if(get_cur_block() == NULL)
1826 dbg_info *dbgi = get_dbg_info(&statement->source_position);
1827 ir_node *jump = new_d_Jmp(dbgi);
1828 add_immBlock_pred(target_block, jump);
1830 set_cur_block(NULL);
1833 static void switch_statement_to_firm(const switch_statement_t *statement)
1835 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1837 ir_node *expression = expression_to_firm(statement->expression);
1838 ir_node *cond = new_d_Cond(dbgi, expression);
1839 ir_node *break_block = new_immBlock();
1841 set_cur_block(NULL);
1843 ir_node *const old_switch_cond = current_switch_cond;
1844 ir_node *const old_break_label = break_label;
1845 const bool old_saw_default_label = saw_default_label;
1846 current_switch_cond = cond;
1847 break_label = break_block;
1849 statement_to_firm(statement->body);
1851 if(get_cur_block() != NULL) {
1852 ir_node *jmp = new_Jmp();
1853 add_immBlock_pred(break_block, jmp);
1856 if (!saw_default_label) {
1857 set_cur_block(get_nodes_block(cond));
1858 ir_node *const proj = new_d_defaultProj(dbgi, cond,
1859 MAGIC_DEFAULT_PN_NUMBER);
1860 add_immBlock_pred(break_block, proj);
1863 assert(current_switch_cond == cond);
1864 assert(break_label == break_block);
1865 current_switch_cond = old_switch_cond;
1866 break_label = old_break_label;
1867 saw_default_label = old_saw_default_label;
1869 mature_immBlock(break_block);
1870 set_cur_block(break_block);
1873 static long fold_constant(const expression_t *expression)
1875 ir_graph *old_current_ir_graph = current_ir_graph;
1876 current_ir_graph = get_const_code_irg();
1878 ir_node *cnst = expression_to_firm(expression);
1879 if(!is_Const(cnst)) {
1880 panic("couldn't fold constantl");
1882 tarval *tv = get_Const_tarval(cnst);
1883 if(!tarval_is_long(tv)) {
1884 panic("folded constant not an integer");
1887 long res = get_tarval_long(tv);
1889 current_ir_graph = old_current_ir_graph;
1893 static void case_label_to_firm(const case_label_statement_t *statement)
1895 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1897 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
1899 /* let's create a node and hope firm constant folding creates a Const
1902 set_cur_block(get_nodes_block(current_switch_cond));
1903 if(statement->expression) {
1904 long pn = fold_constant(statement->expression);
1905 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
1906 /* oops someone detected our cheating... */
1907 panic("magic default pn used");
1909 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
1911 saw_default_label = true;
1912 proj = new_d_defaultProj(dbgi, current_switch_cond,
1913 MAGIC_DEFAULT_PN_NUMBER);
1916 ir_node *block = new_immBlock();
1917 if (fallthrough != NULL) {
1918 add_immBlock_pred(block, fallthrough);
1920 add_immBlock_pred(block, proj);
1921 mature_immBlock(block);
1924 static ir_node *get_label_block(declaration_t *label)
1926 assert(label->namespace == NAMESPACE_LABEL);
1928 if(label->declaration_type == DECLARATION_TYPE_LABEL_BLOCK) {
1929 return label->v.block;
1931 assert(label->declaration_type == DECLARATION_TYPE_UNKNOWN);
1933 ir_node *old_cur_block = get_cur_block();
1934 ir_node *block = new_immBlock();
1935 set_cur_block(old_cur_block);
1937 label->declaration_type = DECLARATION_TYPE_LABEL_BLOCK;
1938 label->v.block = block;
1940 ARR_APP1(ir_node *, imature_blocks, block);
1945 static void label_to_firm(const label_statement_t *statement)
1947 ir_node *block = get_label_block(statement->label);
1949 if(get_cur_block() != NULL) {
1950 ir_node *jmp = new_Jmp();
1951 add_immBlock_pred(block, jmp);
1954 set_cur_block(block);
1957 statement_to_firm(statement->label_statement);
1960 static void goto_to_firm(const goto_statement_t *statement)
1962 if(get_cur_block() == NULL)
1965 ir_node *block = get_label_block(statement->label);
1966 ir_node *jmp = new_Jmp();
1967 add_immBlock_pred(block, jmp);
1969 set_cur_block(NULL);
1972 static void statement_to_firm(statement_t *statement)
1974 switch(statement->type) {
1975 case STATEMENT_COMPOUND:
1976 compound_statement_to_firm((compound_statement_t*) statement);
1978 case STATEMENT_RETURN:
1979 return_statement_to_firm((return_statement_t*) statement);
1981 case STATEMENT_EXPRESSION:
1982 expression_statement_to_firm((expression_statement_t*) statement);
1985 if_statement_to_firm((if_statement_t*) statement);
1987 case STATEMENT_WHILE:
1988 while_statement_to_firm((while_statement_t*) statement);
1990 case STATEMENT_DO_WHILE:
1991 do_while_statement_to_firm((do_while_statement_t*) statement);
1993 case STATEMENT_DECLARATION:
1994 declaration_statement_to_firm((declaration_statement_t*) statement);
1996 case STATEMENT_BREAK:
1997 create_jump_statement(statement, break_label);
1999 case STATEMENT_CONTINUE:
2000 create_jump_statement(statement, continue_label);
2002 case STATEMENT_SWITCH:
2003 switch_statement_to_firm((switch_statement_t*) statement);
2005 case STATEMENT_CASE_LABEL:
2006 case_label_to_firm((case_label_statement_t*) statement);
2009 for_statement_to_firm((for_statement_t*) statement);
2011 case STATEMENT_LABEL:
2012 label_to_firm((label_statement_t*) statement);
2014 case STATEMENT_GOTO:
2015 goto_to_firm((goto_statement_t*) statement);
2020 panic("Statement not implemented\n");
2023 static int get_function_n_local_vars(declaration_t *declaration)
2030 static void initialize_function_parameters(declaration_t *declaration)
2032 ir_graph *irg = current_ir_graph;
2033 ir_node *args = get_irg_args(irg);
2034 ir_node *start_block = get_irg_start_block(irg);
2037 declaration_t *parameter = declaration->context.declarations;
2038 for( ; parameter != NULL; parameter = parameter->next) {
2039 assert(parameter->declaration_type == DECLARATION_TYPE_UNKNOWN);
2040 type_t *type = parameter->type;
2042 bool needs_entity = parameter->address_taken;
2043 if(type->type == TYPE_COMPOUND_STRUCT
2044 || type->type == TYPE_COMPOUND_UNION) {
2045 needs_entity = true;
2049 panic("entities for function parameters not implemented yet");
2052 ir_mode *mode = get_ir_mode(parameter->type);
2054 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
2057 parameter->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
2058 parameter->v.value_number = next_value_number_function;
2059 ++next_value_number_function;
2061 set_value(parameter->v.value_number, proj);
2065 static void create_function(declaration_t *declaration)
2067 ir_entity *entity = get_function_entity(declaration);
2069 if(declaration->init.statement == NULL)
2072 assert(imature_blocks == NULL);
2073 imature_blocks = NEW_ARR_F(ir_node*, 0);
2075 int n_local_vars = get_function_n_local_vars(declaration);
2076 ir_graph *irg = new_ir_graph(entity, n_local_vars);
2077 ir_node *first_block = get_cur_block();
2079 next_value_number_function = 0;
2080 initialize_function_parameters(declaration);
2082 statement_to_firm(declaration->init.statement);
2084 ir_node *end_block = get_irg_end_block(irg);
2086 /* do we have a return statement yet? */
2087 if(get_cur_block() != NULL) {
2088 assert(declaration->type->type == TYPE_FUNCTION);
2089 const function_type_t* const func_type
2090 = (const function_type_t*) declaration->type;
2092 if (func_type->result_type == type_void) {
2093 ret = new_Return(get_store(), 0, NULL);
2095 ir_mode *const mode = get_ir_mode(func_type->result_type);
2097 // ยง5.1.2.2.3 main implicitly returns 0
2098 if (strcmp(declaration->symbol->string, "main") == 0) {
2099 in[0] = new_Const(mode, get_mode_null(mode));
2101 in[0] = new_Unknown(mode);
2103 ret = new_Return(get_store(), 1, in);
2105 add_immBlock_pred(end_block, ret);
2108 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
2109 mature_immBlock(imature_blocks[i]);
2111 DEL_ARR_F(imature_blocks);
2112 imature_blocks = NULL;
2114 mature_immBlock(first_block);
2115 mature_immBlock(end_block);
2117 irg_finalize_cons(irg);
2119 /* finalize the frame type */
2120 ir_type *frame_type = get_irg_frame_type(irg);
2121 int n = get_compound_n_members(frame_type);
2124 for(int i = 0; i < n; ++i) {
2125 ir_entity *entity = get_compound_member(frame_type, i);
2126 ir_type *entity_type = get_entity_type(entity);
2128 int align = get_type_alignment_bytes(entity_type);
2129 if(align > align_all)
2133 misalign = offset % align;
2137 set_entity_offset(entity, offset);
2138 offset += get_type_size_bytes(entity_type);
2140 set_type_size_bytes(frame_type, offset);
2141 set_type_alignment_bytes(frame_type, align_all);
2142 set_type_state(frame_type, layout_fixed);
2147 static void create_global_variable(declaration_t *declaration)
2149 ir_type *global_type = get_glob_type();
2150 create_declaration_entity(declaration, DECLARATION_TYPE_GLOBAL_VARIABLE,
2153 ir_entity *entity = declaration->v.entity;
2154 if(declaration->storage_class == STORAGE_CLASS_STATIC) {
2155 set_entity_visibility(entity, visibility_local);
2156 } else if(declaration->storage_class == STORAGE_CLASS_EXTERN) {
2157 set_entity_visibility(entity, visibility_external_allocated);
2159 set_entity_visibility(entity, visibility_external_visible);
2161 current_ir_graph = get_const_code_irg();
2162 create_initializer(declaration);
2165 static void context_to_firm(context_t *context)
2167 declaration_t *declaration = context->declarations;
2168 for( ; declaration != NULL; declaration = declaration->next) {
2169 if(declaration->namespace != NAMESPACE_NORMAL)
2171 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
2172 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
2174 if(declaration->symbol == NULL)
2177 type_t *type = declaration->type;
2178 if(type->type == TYPE_FUNCTION) {
2179 create_function(declaration);
2181 create_global_variable(declaration);
2186 void translation_unit_to_firm(translation_unit_t *unit)
2188 /* remove me later TODO FIXME */
2189 (void) get_type_size;
2191 /* just to be sure */
2192 continue_label = NULL;
2194 current_switch_cond = NULL;
2196 context_to_firm(& unit->context);