9 #include <libfirm/firm.h>
10 #include <libfirm/adt/obst.h>
14 #include "adt/error.h"
15 #include "adt/array.h"
21 #define MAGIC_DEFAULT_PN_NUMBER (long) -314159265
23 static ir_type *ir_type_const_char;
24 static ir_type *ir_type_wchar_t;
25 static ir_type *ir_type_void;
26 static ir_type *ir_type_int;
28 static type_t *type_const_char;
29 static type_t *type_void;
30 static type_t *type_int;
32 static int next_value_number_function;
33 static ir_node *continue_label;
34 static ir_node *break_label;
35 static ir_node *current_switch_cond;
36 static bool saw_default_label;
37 static ir_node **imature_blocks;
39 static const declaration_t *current_function_decl;
40 static ir_node *current_function_name;
42 static struct obstack asm_obst;
44 typedef enum declaration_type_t {
45 DECLARATION_TYPE_UNKNOWN,
46 DECLARATION_TYPE_FUNCTION,
47 DECLARATION_TYPE_GLOBAL_VARIABLE,
48 DECLARATION_TYPE_LOCAL_VARIABLE,
49 DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
50 DECLARATION_TYPE_COMPOUND_MEMBER,
51 DECLARATION_TYPE_LABEL_BLOCK,
52 DECLARATION_TYPE_ENUM_ENTRY
55 static ir_type *get_ir_type(type_t *type);
57 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
61 const declaration_t *declaration = & value_numbers[pos]->declaration;
63 print_warning_prefix(declaration->source_position);
64 fprintf(stderr, "variable '%s' might be used uninitialized\n",
65 declaration->symbol->string);
67 fprintf(stderr, "Some variable might be used uninitialized\n");
68 return new_r_Unknown(irg, mode);
71 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
73 const source_position_t *pos = (const source_position_t*) dbg;
76 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
80 const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
82 const source_position_t *pos = (const source_position_t*) dbg;
87 return pos->input_name;
90 void init_ast2firm(void)
92 obstack_init(&asm_obst);
95 void exit_ast2firm(void)
97 obstack_free(&asm_obst, NULL);
100 static unsigned unique_id = 0;
102 static ident *unique_ident(const char *tag)
106 snprintf(buf, sizeof(buf), "%s.%u", tag, unique_id);
108 return new_id_from_str(buf);
111 static ir_mode *get_atomic_mode(const atomic_type_t* atomic_type)
113 switch(atomic_type->atype) {
114 case ATOMIC_TYPE_SCHAR:
115 case ATOMIC_TYPE_CHAR:
117 case ATOMIC_TYPE_UCHAR:
119 case ATOMIC_TYPE_SHORT:
121 case ATOMIC_TYPE_USHORT:
123 case ATOMIC_TYPE_BOOL:
124 case ATOMIC_TYPE_LONG:
125 case ATOMIC_TYPE_INT:
127 case ATOMIC_TYPE_ULONG:
128 case ATOMIC_TYPE_UINT:
130 case ATOMIC_TYPE_LONGLONG:
132 case ATOMIC_TYPE_ULONGLONG:
134 case ATOMIC_TYPE_FLOAT:
136 case ATOMIC_TYPE_DOUBLE:
138 case ATOMIC_TYPE_LONG_DOUBLE:
140 #ifdef PROVIDE_COMPLEX
141 case ATOMIC_TYPE_FLOAT_COMPLEX:
142 case ATOMIC_TYPE_DOUBLE_COMPLEX:
143 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
144 panic("complex lowering not implemented yet");
146 case ATOMIC_TYPE_FLOAT_IMAGINARY:
147 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
148 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
149 panic("imaginary lowering not implemented yet");
152 case ATOMIC_TYPE_VOID:
153 /* firm has no real void... */
155 case ATOMIC_TYPE_INVALID:
158 panic("Encountered unknown atomic type");
162 static unsigned get_type_size(type_t *type);
164 static unsigned get_atomic_type_size(const atomic_type_t *type)
166 switch(type->atype) {
167 case ATOMIC_TYPE_CHAR:
168 case ATOMIC_TYPE_SCHAR:
169 case ATOMIC_TYPE_UCHAR:
172 case ATOMIC_TYPE_SHORT:
173 case ATOMIC_TYPE_USHORT:
176 case ATOMIC_TYPE_BOOL:
177 case ATOMIC_TYPE_INT:
178 case ATOMIC_TYPE_UINT:
179 case ATOMIC_TYPE_LONG:
180 case ATOMIC_TYPE_ULONG:
181 case ATOMIC_TYPE_FLOAT:
184 case ATOMIC_TYPE_LONGLONG:
185 case ATOMIC_TYPE_ULONGLONG:
186 case ATOMIC_TYPE_DOUBLE:
189 case ATOMIC_TYPE_LONG_DOUBLE:
192 case ATOMIC_TYPE_VOID:
195 case ATOMIC_TYPE_INVALID:
198 panic("Trying to determine size of invalid atomic type");
201 static unsigned get_compound_type_size(compound_type_t *type)
203 ir_type *irtype = get_ir_type((type_t*) type);
204 return get_type_size_bytes(irtype);
207 static unsigned get_array_type_size(array_type_t *type)
209 ir_type *irtype = get_ir_type((type_t*) type);
210 return get_type_size_bytes(irtype);
213 static unsigned get_type_size(type_t *type)
215 type = skip_typeref(type);
219 return get_atomic_type_size(&type->atomic);
221 return get_mode_size_bytes(mode_Is);
222 case TYPE_COMPOUND_UNION:
223 case TYPE_COMPOUND_STRUCT:
224 return get_compound_type_size(&type->compound);
226 /* just a pointer to the function */
227 return get_mode_size_bytes(mode_P_code);
229 return get_mode_size_bytes(mode_P_data);
231 return get_array_type_size(&type->array);
233 return get_type_size(type->builtin.real_type);
239 panic("Trying to determine size of invalid type");
242 static unsigned count_parameters(const function_type_t *function_type)
246 function_parameter_t *parameter = function_type->parameters;
247 for ( ; parameter != NULL; parameter = parameter->next) {
257 static long fold_constant(const expression_t *expression);
259 static ir_type *create_atomic_type(const atomic_type_t *type)
261 ir_mode *mode = get_atomic_mode(type);
262 ident *id = get_mode_ident(mode);
263 ir_type *irtype = new_type_primitive(id, mode);
265 if(type->atype == ATOMIC_TYPE_LONG_DOUBLE) {
266 set_type_alignment_bytes(irtype, 4);
272 static ir_type *create_method_type(const function_type_t *function_type)
274 type_t *return_type = function_type->return_type;
276 ident *id = unique_ident("functiontype");
277 int n_parameters = count_parameters(function_type);
278 int n_results = return_type == type_void ? 0 : 1;
279 ir_type *irtype = new_type_method(id, n_parameters, n_results);
281 if(return_type != type_void) {
282 ir_type *restype = get_ir_type(return_type);
283 set_method_res_type(irtype, 0, restype);
286 function_parameter_t *parameter = function_type->parameters;
288 for( ; parameter != NULL; parameter = parameter->next) {
289 ir_type *p_irtype = get_ir_type(parameter->type);
290 set_method_param_type(irtype, n, p_irtype);
294 if(function_type->variadic || function_type->unspecified_parameters) {
295 set_method_variadicity(irtype, variadicity_variadic);
301 static ir_type *create_pointer_type(pointer_type_t *type)
303 type_t *points_to = type->points_to;
304 ir_type *ir_points_to;
305 /* Avoid endless recursion if the points_to type contains this poiner type
306 * again (might be a struct). We therefore first create a void* pointer
307 * and then set the real points_to type
309 ir_type *ir_type = new_type_pointer(unique_ident("pointer"),
310 ir_type_void, mode_P_data);
311 type->type.firm_type = ir_type;
313 ir_points_to = get_ir_type(points_to);
314 set_pointer_points_to_type(ir_type, ir_points_to);
319 static ir_type *create_array_type(array_type_t *type)
321 type_t *element_type = type->element_type;
322 ir_type *ir_element_type = get_ir_type(element_type);
324 ident *id = unique_ident("array");
325 ir_type *ir_type = new_type_array(id, 1, ir_element_type);
327 if(type->size != NULL) {
328 int n_elements = fold_constant(type->size);
330 set_array_bounds_int(ir_type, 0, 0, n_elements);
332 size_t elemsize = get_type_size_bytes(ir_element_type);
333 int align = get_type_alignment_bytes(ir_element_type);
334 if(elemsize % align > 0) {
335 elemsize += align - (elemsize % align);
337 set_type_size_bytes(ir_type, n_elements * elemsize);
338 set_type_alignment_bytes(ir_type, align);
339 set_type_state(ir_type, layout_fixed);
341 set_array_lower_bound_int(ir_type, 0, 0);
347 #define INVALID_TYPE ((ir_type_ptr)-1)
349 static ir_type *create_struct_type(compound_type_t *type)
351 symbol_t *symbol = type->declaration->symbol;
354 id = unique_ident(symbol->string);
356 id = unique_ident("__anonymous_struct");
358 ir_type *ir_type = new_type_struct(id);
360 type->type.firm_type = ir_type;
364 declaration_t *entry = type->declaration->context.declarations;
365 for( ; entry != NULL; entry = entry->next) {
366 if(entry->namespc != NAMESPACE_NORMAL)
369 ident *ident = new_id_from_str(entry->symbol->string);
370 ir_type_ptr entry_ir_type = get_ir_type(entry->type);
372 int entry_size = get_type_size_bytes(entry_ir_type);
373 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
374 int misalign = offset % entry_alignment;
376 offset += entry_alignment - misalign;
378 ir_entity *entity = new_entity(ir_type, ident, entry_ir_type);
379 set_entity_offset(entity, offset);
380 add_struct_member(ir_type, entity);
381 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
382 entry->v.entity = entity;
384 offset += entry_size;
385 if(entry_alignment > align_all) {
386 if(entry_alignment % align_all != 0) {
387 panic("Uneven alignments not supported yet");
389 align_all = entry_alignment;
393 int misalign = offset % align_all;
395 set_type_alignment_bytes(ir_type, align_all);
396 set_type_size_bytes(ir_type, offset);
397 set_type_state(ir_type, layout_fixed);
402 static ir_type *create_union_type(compound_type_t *type)
404 declaration_t *declaration = type->declaration;
405 symbol_t *symbol = declaration->symbol;
408 id = unique_ident(symbol->string);
410 id = unique_ident("__anonymous_union");
412 ir_type *ir_type = new_type_union(id);
414 type->type.firm_type = ir_type;
418 declaration_t *entry = declaration->context.declarations;
419 for( ; entry != NULL; entry = entry->next) {
420 if(entry->namespc != NAMESPACE_NORMAL)
423 ident *ident = new_id_from_str(entry->symbol->string);
424 ir_type_ptr entry_ir_type = get_ir_type(entry->type);
426 int entry_size = get_type_size_bytes(entry_ir_type);
427 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
429 ir_entity *entity = new_entity(ir_type, ident, entry_ir_type);
430 add_union_member(ir_type, entity);
431 set_entity_offset(entity, 0);
432 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
433 entry->v.entity = entity;
435 if(entry_size > size) {
438 if(entry_alignment > align_all) {
439 if(entry_alignment % align_all != 0) {
440 panic("Uneven alignments not supported yet");
442 align_all = entry_alignment;
446 set_type_alignment_bytes(ir_type, align_all);
447 set_type_size_bytes(ir_type, size);
448 set_type_state(ir_type, layout_fixed);
453 static ir_node *expression_to_firm(const expression_t *expression);
454 static inline ir_mode *get_ir_mode(type_t *type);
456 static ir_type *create_enum_type(enum_type_t *const type)
458 type->type.firm_type = ir_type_int;
460 ir_mode *const mode = get_ir_mode((type_t*) type);
461 tarval *const one = get_mode_one(mode);
462 tarval * tv_next = get_tarval_null(mode);
464 declaration_t *declaration = type->declaration->next;
465 for (; declaration != NULL; declaration = declaration->next) {
466 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
469 declaration->declaration_type = DECLARATION_TYPE_ENUM_ENTRY;
471 expression_t *const init = declaration->init.enum_value;
473 ir_node *const cnst = expression_to_firm(init);
474 if (!is_Const(cnst)) {
475 panic("couldn't fold constant");
477 tv_next = get_Const_tarval(cnst);
479 declaration->v.enum_val = tv_next;
480 tv_next = tarval_add(tv_next, one);
486 static ir_type *get_ir_type(type_t *type)
488 assert(type != NULL);
490 type = skip_typeref(type);
492 if(type->base.firm_type != NULL) {
493 assert(type->base.firm_type != INVALID_TYPE);
494 return type->base.firm_type;
497 ir_type *firm_type = NULL;
500 firm_type = create_atomic_type(&type->atomic);
503 firm_type = create_method_type(&type->function);
506 firm_type = create_pointer_type(&type->pointer);
509 firm_type = create_array_type(&type->array);
511 case TYPE_COMPOUND_STRUCT:
512 firm_type = create_struct_type(&type->compound);
514 case TYPE_COMPOUND_UNION:
515 firm_type = create_union_type(&type->compound);
518 firm_type = create_enum_type(&type->enumt);
521 firm_type = get_ir_type(type->builtin.real_type);
528 if(firm_type == NULL)
529 panic("unknown type found");
531 type->base.firm_type = firm_type;
535 static inline ir_mode *get_ir_mode(type_t *type)
537 ir_type *irtype = get_ir_type(type);
539 /* firm doesn't report a mode for arrays somehow... */
540 if(is_Array_type(irtype)) {
544 ir_mode *mode = get_type_mode(irtype);
545 assert(mode != NULL);
549 static ir_entity* get_function_entity(declaration_t *declaration)
551 if(declaration->declaration_type == DECLARATION_TYPE_FUNCTION)
552 return declaration->v.entity;
553 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
555 symbol_t *symbol = declaration->symbol;
556 ident *id = new_id_from_str(symbol->string);
558 ir_type *global_type = get_glob_type();
559 ir_type *ir_type_method = get_ir_type(declaration->type);
560 assert(is_Method_type(ir_type_method));
562 ir_entity *entity = new_entity(global_type, id, ir_type_method);
563 set_entity_ld_ident(entity, id);
564 if(declaration->storage_class == STORAGE_CLASS_STATIC
565 || declaration->is_inline) {
566 set_entity_visibility(entity, visibility_local);
567 } else if(declaration->init.statement != NULL) {
568 set_entity_visibility(entity, visibility_external_visible);
570 set_entity_visibility(entity, visibility_external_allocated);
572 set_entity_allocation(entity, allocation_static);
574 declaration->declaration_type = DECLARATION_TYPE_FUNCTION;
575 declaration->v.entity = entity;
580 static dbg_info *get_dbg_info(const source_position_t *pos)
582 return (dbg_info*) pos;
585 static ir_node *const_to_firm(const const_expression_t *cnst)
587 dbg_info *dbgi = get_dbg_info(&cnst->expression.source_position);
588 ir_mode *mode = get_ir_mode(cnst->expression.datatype);
593 if(mode_is_float(mode)) {
594 tv = new_tarval_from_double(cnst->v.float_value, mode);
596 if(mode_is_signed(mode)) {
597 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
599 len = snprintf(buf, sizeof(buf), "%llu",
600 (unsigned long long) cnst->v.int_value);
602 tv = new_tarval_from_str(buf, len, mode);
605 return new_d_Const(dbgi, mode, tv);
608 static ir_node *create_symconst(dbg_info *dbgi, ir_entity *entity)
610 assert(entity != NULL);
611 union symconst_symbol sym;
612 sym.entity_p = entity;
613 return new_d_SymConst(dbgi, sym, symconst_addr_ent);
616 static ir_node *string_to_firm(const source_position_t *const src_pos,
617 const char *const id_prefix,
618 const char *const string)
620 ir_type *const global_type = get_glob_type();
621 ir_type *const type = new_type_array(unique_ident("strtype"), 1,
624 ident *const id = unique_ident(id_prefix);
625 ir_entity *const entity = new_entity(global_type, id, type);
626 set_entity_ld_ident(entity, id);
627 set_entity_variability(entity, variability_constant);
628 set_entity_allocation(entity, allocation_static);
630 ir_type *const elem_type = ir_type_const_char;
631 ir_mode *const mode = get_type_mode(elem_type);
633 const size_t slen = strlen(string) + 1;
635 set_array_lower_bound_int(type, 0, 0);
636 set_array_upper_bound_int(type, 0, slen);
637 set_type_size_bytes(type, slen);
638 set_type_state(type, layout_fixed);
640 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
641 for(size_t i = 0; i < slen; ++i) {
642 tvs[i] = new_tarval_from_long(string[i], mode);
645 set_array_entity_values(entity, tvs, slen);
648 dbg_info *const dbgi = get_dbg_info(src_pos);
650 return create_symconst(dbgi, entity);
653 static ir_node *string_literal_to_firm(
654 const string_literal_expression_t* literal)
656 return string_to_firm(&literal->expression.source_position, "Lstr",
660 static ir_node *wide_string_literal_to_firm(
661 const wide_string_literal_expression_t* const literal)
663 ir_type *const global_type = get_glob_type();
664 ir_type *const elem_type = ir_type_wchar_t;
665 ir_type *const type = new_type_array(unique_ident("strtype"), 1,
668 ident *const id = unique_ident("Lstr");
669 ir_entity *const entity = new_entity(global_type, id, type);
670 set_entity_ld_ident(entity, id);
671 set_entity_variability(entity, variability_constant);
672 set_entity_allocation(entity, allocation_static);
674 ir_mode *const mode = get_type_mode(elem_type);
676 const wchar_rep_t *const string = literal->value.begin;
677 const size_t slen = literal->value.size;
679 set_array_lower_bound_int(type, 0, 0);
680 set_array_upper_bound_int(type, 0, slen);
681 set_type_size_bytes(type, slen);
682 set_type_state(type, layout_fixed);
684 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
685 for(size_t i = 0; i < slen; ++i) {
686 tvs[i] = new_tarval_from_long(string[i], mode);
689 set_array_entity_values(entity, tvs, slen);
692 dbg_info *const dbgi = get_dbg_info(&literal->expression.source_position);
694 return create_symconst(dbgi, entity);
697 static ir_node *deref_address(ir_type *const irtype, ir_node *const addr,
698 dbg_info *const dbgi)
700 if(is_compound_type(irtype) || is_Array_type(irtype)) {
704 ir_mode *const mode = get_type_mode(irtype);
705 ir_node *const memory = get_store();
706 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
707 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
708 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
713 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
715 ir_mode *mode = get_irn_mode(node);
717 if(!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
719 if(!mode_is_float(mode))
722 /* check if there is already a Conv */
723 if (get_irn_op(node) == op_Conv) {
724 /* convert it into a strict Conv */
725 set_Conv_strict(node, 1);
729 /* otherwise create a new one */
730 return new_d_strictConv(dbgi, node, mode);
733 static ir_node *get_global_var_address(dbg_info *const dbgi,
734 const declaration_t *const decl)
736 assert(decl->declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
738 ir_entity *const entity = decl->v.entity;
739 switch ((storage_class_tag_t)decl->storage_class) {
740 case STORAGE_CLASS_THREAD:
741 case STORAGE_CLASS_THREAD_EXTERN:
742 case STORAGE_CLASS_THREAD_STATIC: {
743 ir_node *const no_mem = new_NoMem();
744 ir_node *const tls = get_irg_tls(current_ir_graph);
745 return new_d_simpleSel(dbgi, no_mem, tls, entity);
749 return create_symconst(dbgi, entity);
753 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
755 dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
756 declaration_t *declaration = ref->declaration;
757 type_t *type = skip_typeref(declaration->type);
759 switch((declaration_type_t) declaration->declaration_type) {
760 case DECLARATION_TYPE_UNKNOWN:
761 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) {
767 case DECLARATION_TYPE_ENUM_ENTRY: {
768 ir_mode *const mode = get_ir_mode(type);
769 return new_Const(mode, declaration->v.enum_val);
772 case DECLARATION_TYPE_LOCAL_VARIABLE: {
773 ir_mode *mode = get_ir_mode(type);
774 return get_value(declaration->v.value_number, mode);
776 case DECLARATION_TYPE_FUNCTION: {
777 return create_symconst(dbgi, declaration->v.entity);
779 case DECLARATION_TYPE_GLOBAL_VARIABLE: {
780 ir_node *const addr = get_global_var_address(dbgi, declaration);
781 ir_type *const irtype = get_entity_type(declaration->v.entity);
782 return deref_address(irtype, addr, dbgi);
785 case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: {
786 ir_entity *entity = declaration->v.entity;
787 ir_node *frame = get_irg_frame(current_ir_graph);
788 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
789 ir_type *irtype = get_entity_type(entity);
790 return deref_address(irtype, sel, dbgi);
793 case DECLARATION_TYPE_COMPOUND_MEMBER:
794 case DECLARATION_TYPE_LABEL_BLOCK:
795 panic("not implemented reference type");
798 panic("reference to declaration with unknown type found");
801 static ir_node *reference_addr(const reference_expression_t *ref)
803 dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
804 declaration_t *declaration = ref->declaration;
806 switch((declaration_type_t) declaration->declaration_type) {
807 case DECLARATION_TYPE_UNKNOWN:
809 case DECLARATION_TYPE_LOCAL_VARIABLE:
810 panic("local variable without entity has no address");
811 case DECLARATION_TYPE_FUNCTION: {
812 return create_symconst(dbgi, declaration->v.entity);
814 case DECLARATION_TYPE_GLOBAL_VARIABLE: {
815 ir_node *const addr = get_global_var_address(dbgi, declaration);
818 case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: {
819 ir_entity *entity = declaration->v.entity;
820 ir_node *frame = get_irg_frame(current_ir_graph);
821 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
826 case DECLARATION_TYPE_ENUM_ENTRY:
827 panic("trying to reference enum entry");
829 case DECLARATION_TYPE_COMPOUND_MEMBER:
830 case DECLARATION_TYPE_LABEL_BLOCK:
831 panic("not implemented reference type");
834 panic("reference to declaration with unknown type found");
837 static ir_node *process_builtin_call(const call_expression_t *call)
839 dbg_info *dbgi = get_dbg_info(&call->expression.source_position);
841 assert(call->function->type == EXPR_BUILTIN_SYMBOL);
842 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
844 type_t *type = skip_typeref(builtin->expression.datatype);
845 assert(is_type_pointer(type));
847 type_t *function_type = skip_typeref(type->pointer.points_to);
848 symbol_t *symbol = builtin->symbol;
851 case T___builtin_alloca: {
852 if(call->arguments == NULL || call->arguments->next != NULL) {
853 panic("invalid number of parameters on __builtin_alloca");
855 expression_t *argument = call->arguments->expression;
856 ir_node *size = expression_to_firm(argument);
858 ir_node *store = get_store();
859 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
861 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
863 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
867 case T___builtin_nan:
868 case T___builtin_nanf:
869 case T___builtin_nand: {
870 /* Ignore string for now... */
871 assert(is_type_function(function_type));
872 ir_mode *mode = get_ir_mode(function_type->function.return_type);
873 tarval *tv = get_mode_NAN(mode);
874 ir_node *res = new_d_Const(dbgi, mode, tv);
877 case T___builtin_va_end:
880 panic("Unsupported builtin found\n");
884 static ir_node *call_expression_to_firm(const call_expression_t *call)
886 assert(get_cur_block() != NULL);
888 expression_t *function = call->function;
889 if(function->type == EXPR_BUILTIN_SYMBOL) {
890 return process_builtin_call(call);
892 ir_node *callee = expression_to_firm(function);
894 type_t *type = skip_typeref(function->base.datatype);
895 assert(is_type_pointer(type));
896 pointer_type_t *pointer_type = &type->pointer;
897 type_t *points_to = skip_typeref(pointer_type->points_to);
898 assert(is_type_function(points_to));
899 function_type_t *function_type = &points_to->function;
901 int n_parameters = 0;
902 call_argument_t *argument = call->arguments;
903 for( ; argument != NULL; argument = argument->next) {
907 dbg_info *dbgi = get_dbg_info(&call->expression.source_position);
909 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
910 ir_type *new_method_type = NULL;
911 if(function_type->variadic || function_type->unspecified_parameters) {
912 /* we need to construct a new method type matching the call
914 int n_res = get_method_n_ress(ir_method_type);
915 new_method_type = new_type_method(unique_ident("calltype"),
916 n_parameters, n_res);
917 set_method_calling_convention(new_method_type,
918 get_method_calling_convention(ir_method_type));
919 set_method_additional_properties(new_method_type,
920 get_method_additional_properties(ir_method_type));
922 for(int i = 0; i < n_res; ++i) {
923 set_method_res_type(new_method_type, i,
924 get_method_res_type(ir_method_type, i));
927 ir_node *in[n_parameters];
929 argument = call->arguments;
931 for( ; argument != NULL; argument = argument->next) {
932 expression_t *expression = argument->expression;
933 ir_node *arg_node = expression_to_firm(expression);
935 arg_node = do_strict_conv(dbgi, arg_node);
938 if(new_method_type != NULL) {
939 ir_type *irtype = get_ir_type(expression->base.datatype);
940 set_method_param_type(new_method_type, n, irtype);
945 assert(n == n_parameters);
947 if(new_method_type != NULL)
948 ir_method_type = new_method_type;
950 ir_node *store = get_store();
951 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
953 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
956 type_t *return_type = skip_typeref(function_type->return_type);
957 ir_node *result = NULL;
959 if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
961 if(is_type_scalar(return_type)) {
962 mode = get_ir_mode(return_type);
966 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
967 result = new_d_Proj(dbgi, resproj, mode, 0);
973 static void statement_to_firm(statement_t *statement);
974 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
976 static ir_node *expression_to_addr(const expression_t *expression);
977 static void create_condition_evaluation(const expression_t *expression,
979 ir_node *false_block);
981 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
984 value = do_strict_conv(dbgi, value);
986 ir_node *memory = get_store();
988 if(is_type_scalar(type)) {
989 ir_node *store = new_d_Store(dbgi, memory, addr, value);
990 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
991 set_store(store_mem);
993 ir_type *irtype = get_ir_type(type);
994 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
995 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
996 set_store(copyb_mem);
1000 static void set_value_for_expression(const expression_t *expression,
1003 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1004 value = do_strict_conv(dbgi, value);
1006 if(expression->type == EXPR_REFERENCE) {
1007 reference_expression_t *ref = (reference_expression_t*) expression;
1009 declaration_t *declaration = ref->declaration;
1010 assert(declaration->declaration_type != DECLARATION_TYPE_UNKNOWN);
1011 if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
1012 set_value(declaration->v.value_number, value);
1017 ir_node *addr = expression_to_addr(expression);
1018 type_t *type = skip_typeref(expression->base.datatype);
1019 assign_value(dbgi, addr, type, value);
1022 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1024 ir_mode *value_mode = get_irn_mode(value);
1026 if (value_mode == dest_mode || is_Bad(value))
1029 if(dest_mode == mode_b) {
1030 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1031 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1032 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1036 return new_d_Conv(dbgi, value, dest_mode);
1039 static ir_node *create_incdec(const unary_expression_t *expression)
1041 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1042 type_t *type = skip_typeref(expression->expression.datatype);
1043 ir_mode *mode = get_ir_mode(type);
1044 expression_t *value = expression->value;
1046 ir_node *value_node = expression_to_firm(value);
1049 if(is_type_pointer(type)) {
1050 pointer_type_t *pointer_type = &type->pointer;
1051 unsigned elem_size = get_type_size(pointer_type->points_to);
1052 offset = new_Const_long(mode_Is, elem_size);
1054 assert(is_type_arithmetic(type));
1055 offset = new_Const(mode, get_mode_one(mode));
1058 switch(expression->expression.type) {
1059 case EXPR_UNARY_POSTFIX_INCREMENT: {
1060 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1061 set_value_for_expression(value, new_value);
1064 case EXPR_UNARY_POSTFIX_DECREMENT: {
1065 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1066 set_value_for_expression(value, new_value);
1069 case EXPR_UNARY_PREFIX_INCREMENT: {
1070 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1071 set_value_for_expression(value, new_value);
1074 case EXPR_UNARY_PREFIX_DECREMENT: {
1075 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1076 set_value_for_expression(value, new_value);
1080 panic("no incdec expr in create_incdec");
1085 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
1087 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1088 type_t *type = skip_typeref(expression->expression.datatype);
1090 if(expression->expression.type == EXPR_UNARY_TAKE_ADDRESS)
1091 return expression_to_addr(expression->value);
1093 const expression_t *value = expression->value;
1094 ir_node *value_node = expression_to_firm(value);
1096 switch(expression->expression.type) {
1097 case EXPR_UNARY_NEGATE: {
1098 ir_mode *mode = get_ir_mode(type);
1099 return new_d_Minus(dbgi, value_node, mode);
1101 case EXPR_UNARY_PLUS:
1103 case EXPR_UNARY_BITWISE_NEGATE: {
1104 ir_mode *mode = get_ir_mode(type);
1105 return new_d_Not(dbgi, value_node, mode);
1107 case EXPR_UNARY_NOT: {
1108 ir_mode *mode = get_ir_mode(type);
1109 if(get_irn_mode(value_node) != mode_b) {
1110 value_node = create_conv(dbgi, value_node, mode_b);
1112 value_node = new_d_Not(dbgi, value_node, mode_b);
1113 if(mode != mode_b) {
1114 value_node = create_conv(dbgi, value_node, mode);
1118 case EXPR_UNARY_DEREFERENCE: {
1119 type_t *value_type = skip_typeref(value->base.datatype);
1120 ir_type *irtype = get_ir_type(value_type);
1121 assert(is_Pointer_type(irtype));
1122 ir_type *points_to = get_pointer_points_to_type(irtype);
1123 return deref_address(points_to, value_node, dbgi);
1125 case EXPR_UNARY_POSTFIX_INCREMENT:
1126 case EXPR_UNARY_POSTFIX_DECREMENT:
1127 case EXPR_UNARY_PREFIX_INCREMENT:
1128 case EXPR_UNARY_PREFIX_DECREMENT:
1129 return create_incdec(expression);
1130 case EXPR_UNARY_CAST: {
1131 ir_mode *mode = get_ir_mode(type);
1132 ir_node *node = create_conv(dbgi, value_node, mode);
1133 node = do_strict_conv(dbgi, node);
1136 case EXPR_UNARY_CAST_IMPLICIT: {
1137 ir_mode *mode = get_ir_mode(type);
1138 return create_conv(dbgi, value_node, mode);
1144 panic("invalid UNEXPR type found");
1147 static long get_pnc(const expression_type_t type)
1150 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1151 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1152 case EXPR_BINARY_NOTEQUAL: return pn_Cmp_Ne;
1153 case EXPR_BINARY_ISLESS:
1154 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
1155 case EXPR_BINARY_ISLESSEQUAL:
1156 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
1157 case EXPR_BINARY_ISGREATER:
1158 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
1159 case EXPR_BINARY_ISGREATEREQUAL:
1160 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
1161 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
1166 panic("trying to get pn_Cmp from non-comparison binexpr type");
1169 static ir_node *create_lazy_op(const binary_expression_t *expression)
1171 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1172 type_t *type = expression->expression.datatype;
1173 ir_mode *mode = get_ir_mode(type);
1175 ir_node *cur_block = get_cur_block();
1177 ir_node *one_block = new_immBlock();
1178 ir_node *one = new_Const(mode, get_mode_one(mode));
1179 ir_node *jmp_one = new_d_Jmp(dbgi);
1181 ir_node *zero_block = new_immBlock();
1182 ir_node *zero = new_Const(mode, get_mode_null(mode));
1183 ir_node *jmp_zero = new_d_Jmp(dbgi);
1185 set_cur_block(cur_block);
1186 create_condition_evaluation((const expression_t*) expression,
1187 one_block, zero_block);
1188 mature_immBlock(one_block);
1189 mature_immBlock(zero_block);
1191 ir_node *common_block = new_immBlock();
1192 add_immBlock_pred(common_block, jmp_one);
1193 add_immBlock_pred(common_block, jmp_zero);
1194 mature_immBlock(common_block);
1196 ir_node *in[2] = { one, zero };
1197 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1202 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
1203 ir_node *right, ir_mode *mode);
1205 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
1206 create_arithmetic_func func)
1208 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1209 ir_node *left = expression_to_firm(expression->left);
1210 ir_node *right = expression_to_firm(expression->right);
1211 type_t *type = expression->right->base.datatype;
1212 /* be careful with the modes, because in arithmetic assign nodes only
1213 * the right operand has the mode of the arithmetic already */
1214 ir_mode *mode = get_ir_mode(type);
1215 left = create_conv(dbgi, left, mode);
1216 ir_node *res = func(dbgi, left, right, mode);
1221 static ir_node *pointer_arithmetic(ir_node *const pointer,
1224 dbg_info *const dbgi,
1225 const create_arithmetic_func func)
1227 pointer_type_t *const pointer_type = (pointer_type_t*)type;
1228 type_t *const points_to = pointer_type->points_to;
1229 const unsigned elem_size = get_type_size(points_to);
1231 assert(elem_size >= 1);
1232 if (elem_size > 1) {
1233 integer = create_conv(dbgi, integer, mode_Is);
1234 ir_node *const cnst = new_Const_long(mode_Is, (long)elem_size);
1235 ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_Is);
1239 ir_mode *const mode = get_ir_mode(type);
1240 return func(dbgi, pointer, integer, mode);
1243 static ir_node *create_arithmetic_assign_binop(
1244 const binary_expression_t *expression, create_arithmetic_func func)
1246 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1247 type_t *const type = skip_typeref(expression->expression.datatype);
1250 if (is_type_pointer(type)) {
1251 ir_node *const pointer = expression_to_firm(expression->left);
1252 ir_node * integer = expression_to_firm(expression->right);
1253 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
1255 value = create_arithmetic_binop(expression, func);
1258 ir_mode *const mode = get_ir_mode(type);
1259 value = create_conv(dbgi, value, mode);
1260 set_value_for_expression(expression->left, value);
1265 static ir_node *create_add(const binary_expression_t *expression)
1267 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1268 ir_node *left = expression_to_firm(expression->left);
1269 ir_node *right = expression_to_firm(expression->right);
1270 type_t *type = expression->expression.datatype;
1272 expression_t *expr_left = expression->left;
1273 expression_t *expr_right = expression->right;
1274 type_t *type_left = skip_typeref(expr_left->base.datatype);
1275 type_t *type_right = skip_typeref(expr_right->base.datatype);
1277 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1278 ir_mode *const mode = get_ir_mode(type);
1279 return new_d_Add(dbgi, left, right, mode);
1282 if (is_type_pointer(type_left)) {
1283 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
1285 assert(is_type_pointer(type_right));
1286 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
1290 static ir_node *create_sub(const binary_expression_t *expression)
1292 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1293 expression_t *const expr_left = expression->left;
1294 expression_t *const expr_right = expression->right;
1295 ir_node *const left = expression_to_firm(expr_left);
1296 ir_node *const right = expression_to_firm(expr_right);
1297 type_t *const type = expression->expression.datatype;
1298 type_t *const type_left = skip_typeref(expr_left->base.datatype);
1299 type_t *const type_right = skip_typeref(expr_right->base.datatype);
1301 if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1302 ir_mode *const mode = get_ir_mode(type);
1303 return new_d_Sub(dbgi, left, right, mode);
1304 } else if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
1305 const pointer_type_t *const ptr_type = &type_left->pointer;
1306 const unsigned elem_size = get_type_size(ptr_type->points_to);
1307 ir_mode *const mode = get_ir_mode(type);
1308 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
1309 ir_node *const cnst = new_Const_long(mode_Is, (long)elem_size);
1310 ir_node *const no_mem = new_NoMem();
1311 ir_node *const div = new_d_Div(dbgi, no_mem, sub, cnst, mode,
1312 op_pin_state_floats);
1313 return new_d_Proj(dbgi, div, mode, pn_Div_res);
1316 assert(is_type_pointer(type_left));
1317 return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
1320 static ir_node *create_shift(const binary_expression_t *expression)
1322 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1323 ir_node *left = expression_to_firm(expression->left);
1324 ir_node *right = expression_to_firm(expression->right);
1325 type_t *type = expression->expression.datatype;
1326 ir_mode *mode = get_ir_mode(type);
1328 /* firm always wants the shift count to be unsigned */
1329 right = create_conv(dbgi, right, mode_Iu);
1333 switch(expression->expression.type) {
1334 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
1335 case EXPR_BINARY_SHIFTLEFT:
1336 res = new_d_Shl(dbgi, left, right, mode);
1338 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
1339 case EXPR_BINARY_SHIFTRIGHT: {
1340 expression_t *expr_left = expression->left;
1341 type_t *type_left = skip_typeref(expr_left->base.datatype);
1343 if(is_type_signed(type_left)) {
1344 res = new_d_Shrs(dbgi, left, right, mode);
1346 res = new_d_Shr(dbgi, left, right, mode);
1351 panic("create shift op called for non-shift op");
1358 static ir_node *create_divmod(const binary_expression_t *expression)
1360 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1361 ir_node *left = expression_to_firm(expression->left);
1362 ir_node *right = expression_to_firm(expression->right);
1363 ir_node *pin = new_Pin(new_NoMem());
1364 /* be careful with the modes, because in arithmetic assign nodes only
1365 * the right operand has the mode of the arithmetic already */
1366 type_t *type = expression->right->base.datatype;
1367 ir_mode *mode = get_ir_mode(type);
1368 left = create_conv(dbgi, left, mode);
1372 switch (expression->expression.type) {
1373 case EXPR_BINARY_DIV:
1374 case EXPR_BINARY_DIV_ASSIGN:
1375 if(mode_is_float(mode)) {
1376 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
1377 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
1379 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
1380 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
1384 case EXPR_BINARY_MOD:
1385 case EXPR_BINARY_MOD_ASSIGN:
1386 assert(!mode_is_float(mode));
1387 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
1388 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
1391 default: panic("unexpected binary expression type in create_divmod()");
1397 static ir_node *create_arithmetic_assign_divmod(
1398 const binary_expression_t *expression)
1400 ir_node * value = create_divmod(expression);
1401 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1402 type_t *const type = expression->expression.datatype;
1403 ir_mode *const mode = get_ir_mode(type);
1405 assert(type->type != TYPE_POINTER);
1407 value = create_conv(dbgi, value, mode);
1408 set_value_for_expression(expression->left, value);
1413 static ir_node *create_arithmetic_assign_shift(
1414 const binary_expression_t *expression)
1416 ir_node * value = create_shift(expression);
1417 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1418 type_t *const type = expression->expression.datatype;
1419 ir_mode *const mode = get_ir_mode(type);
1421 value = create_conv(dbgi, value, mode);
1422 set_value_for_expression(expression->left, value);
1427 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
1429 expression_type_t type = expression->expression.type;
1432 case EXPR_BINARY_EQUAL:
1433 case EXPR_BINARY_NOTEQUAL:
1434 case EXPR_BINARY_LESS:
1435 case EXPR_BINARY_LESSEQUAL:
1436 case EXPR_BINARY_GREATER:
1437 case EXPR_BINARY_GREATEREQUAL:
1438 case EXPR_BINARY_ISGREATER:
1439 case EXPR_BINARY_ISGREATEREQUAL:
1440 case EXPR_BINARY_ISLESS:
1441 case EXPR_BINARY_ISLESSEQUAL:
1442 case EXPR_BINARY_ISLESSGREATER:
1443 case EXPR_BINARY_ISUNORDERED: {
1444 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1445 ir_node *left = expression_to_firm(expression->left);
1446 ir_node *right = expression_to_firm(expression->right);
1447 ir_node *cmp = new_d_Cmp(dbgi, left, right);
1448 long pnc = get_pnc(type);
1449 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
1452 case EXPR_BINARY_ASSIGN: {
1453 ir_node *right = expression_to_firm(expression->right);
1454 set_value_for_expression(expression->left, right);
1458 case EXPR_BINARY_ADD:
1459 return create_add(expression);
1460 case EXPR_BINARY_SUB:
1461 return create_sub(expression);
1462 case EXPR_BINARY_MUL:
1463 return create_arithmetic_binop(expression, new_d_Mul);
1464 case EXPR_BINARY_BITWISE_AND:
1465 return create_arithmetic_binop(expression, new_d_And);
1466 case EXPR_BINARY_BITWISE_OR:
1467 return create_arithmetic_binop(expression, new_d_Or);
1468 case EXPR_BINARY_BITWISE_XOR:
1469 return create_arithmetic_binop(expression, new_d_Eor);
1470 case EXPR_BINARY_SHIFTLEFT:
1471 case EXPR_BINARY_SHIFTRIGHT:
1472 return create_shift(expression);
1473 case EXPR_BINARY_DIV:
1474 case EXPR_BINARY_MOD:
1475 return create_divmod(expression);
1476 case EXPR_BINARY_LOGICAL_AND:
1477 case EXPR_BINARY_LOGICAL_OR:
1478 return create_lazy_op(expression);
1479 case EXPR_BINARY_COMMA:
1480 expression_to_firm(expression->left);
1481 return expression_to_firm(expression->right);
1482 case EXPR_BINARY_ADD_ASSIGN:
1483 return create_arithmetic_assign_binop(expression, new_d_Add);
1484 case EXPR_BINARY_SUB_ASSIGN:
1485 return create_arithmetic_assign_binop(expression, new_d_Sub);
1486 case EXPR_BINARY_MUL_ASSIGN:
1487 return create_arithmetic_assign_binop(expression, new_d_Mul);
1488 case EXPR_BINARY_DIV_ASSIGN:
1489 return create_arithmetic_assign_divmod(expression);
1490 case EXPR_BINARY_BITWISE_AND_ASSIGN:
1491 return create_arithmetic_assign_binop(expression, new_d_And);
1492 case EXPR_BINARY_BITWISE_OR_ASSIGN:
1493 return create_arithmetic_assign_binop(expression, new_d_Or);
1494 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
1495 return create_arithmetic_assign_binop(expression, new_d_Eor);
1496 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
1497 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
1498 return create_arithmetic_assign_shift(expression);
1500 panic("TODO binexpr type");
1504 static ir_node *array_access_addr(const array_access_expression_t *expression)
1506 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1507 ir_node *base_addr = expression_to_firm(expression->array_ref);
1508 ir_node *offset = expression_to_firm(expression->index);
1509 offset = create_conv(dbgi, offset, mode_Iu);
1511 type_t *ref_type = skip_typeref(expression->array_ref->base.datatype);
1512 assert(is_type_pointer(ref_type));
1513 pointer_type_t *pointer_type = (pointer_type_t*) ref_type;
1515 unsigned elem_size = get_type_size(pointer_type->points_to);
1516 ir_node *elem_size_const = new_Const_long(mode_Iu, elem_size);
1517 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
1519 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P);
1524 static ir_node *array_access_to_firm(
1525 const array_access_expression_t *expression)
1527 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1528 ir_node *addr = array_access_addr(expression);
1529 type_t *type = revert_automatic_type_conversion(
1530 (const expression_t*) expression);
1531 type = skip_typeref(type);
1532 ir_type *irtype = get_ir_type(type);
1534 return deref_address(irtype, addr, dbgi);
1537 static ir_node *sizeof_to_firm(const sizeof_expression_t *expression)
1539 type_t *type = expression->type;
1541 type = expression->size_expression->base.datatype;
1542 assert(type != NULL);
1545 ir_mode *mode = get_ir_mode(expression->expression.datatype);
1546 unsigned size = get_type_size(type);
1547 ir_node *size_node = new_Const_long(mode, size);
1552 static tarval *try_fold_constant(const expression_t *expression)
1554 ir_graph *old_current_ir_graph = current_ir_graph;
1555 if(current_ir_graph == NULL) {
1556 current_ir_graph = get_const_code_irg();
1559 ir_node *cnst = expression_to_firm(expression);
1560 current_ir_graph = old_current_ir_graph;
1562 if(!is_Const(cnst)) {
1566 tarval *tv = get_Const_tarval(cnst);
1567 if(!tarval_is_long(tv)) {
1574 static long fold_constant(const expression_t *expression)
1576 tarval *tv = try_fold_constant(expression);
1578 panic("couldn't fold constantl");
1581 return get_tarval_long(tv);
1584 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
1586 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1588 /* first try to fold a constant condition */
1589 tarval *tv = try_fold_constant(expression->condition);
1591 long val = get_tarval_long(tv);
1593 return expression_to_firm(expression->true_expression);
1595 return expression_to_firm(expression->false_expression);
1599 ir_node *cur_block = get_cur_block();
1601 /* create the true block */
1602 ir_node *true_block = new_immBlock();
1604 ir_node *true_val = expression_to_firm(expression->true_expression);
1605 ir_node *true_jmp = new_Jmp();
1607 /* create the false block */
1608 ir_node *false_block = new_immBlock();
1610 ir_node *false_val = expression_to_firm(expression->false_expression);
1611 ir_node *false_jmp = new_Jmp();
1613 /* create the condition evaluation */
1614 set_cur_block(cur_block);
1615 create_condition_evaluation(expression->condition, true_block, false_block);
1616 mature_immBlock(true_block);
1617 mature_immBlock(false_block);
1619 /* create the common block */
1620 ir_node *common_block = new_immBlock();
1621 add_immBlock_pred(common_block, true_jmp);
1622 add_immBlock_pred(common_block, false_jmp);
1623 mature_immBlock(common_block);
1625 /* TODO improve static semantics, so either both or no values are NULL */
1626 if (true_val == NULL || false_val == NULL)
1629 ir_node *in[2] = { true_val, false_val };
1630 ir_mode *mode = get_irn_mode(true_val);
1631 assert(get_irn_mode(false_val) == mode);
1632 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1637 static ir_node *select_addr(const select_expression_t *expression)
1639 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1641 ir_node *compound_addr = expression_to_firm(expression->compound);
1643 declaration_t *entry = expression->compound_entry;
1644 assert(entry->declaration_type == DECLARATION_TYPE_COMPOUND_MEMBER);
1645 ir_entity *entity = entry->v.entity;
1647 assert(entity != NULL);
1649 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
1654 static ir_node *select_to_firm(const select_expression_t *expression)
1656 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1657 ir_node *addr = select_addr(expression);
1658 type_t *type = revert_automatic_type_conversion(
1659 (const expression_t*) expression);
1660 type = skip_typeref(type);
1661 ir_type *irtype = get_ir_type(type);
1663 return deref_address(irtype, addr, dbgi);
1666 /* Values returned by __builtin_classify_type. */
1667 typedef enum gcc_type_class
1673 enumeral_type_class,
1676 reference_type_class,
1680 function_type_class,
1691 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
1693 const type_t *const type = expr->type_expression->base.datatype;
1699 const atomic_type_t *const atomic_type = &type->atomic;
1700 switch (atomic_type->atype) {
1701 // should not be reached
1702 case ATOMIC_TYPE_INVALID:
1706 // gcc cannot do that
1707 case ATOMIC_TYPE_VOID:
1708 tc = void_type_class;
1711 case ATOMIC_TYPE_CHAR: // gcc handles this as integer
1712 case ATOMIC_TYPE_SCHAR: // gcc handles this as integer
1713 case ATOMIC_TYPE_UCHAR: // gcc handles this as integer
1714 case ATOMIC_TYPE_SHORT:
1715 case ATOMIC_TYPE_USHORT:
1716 case ATOMIC_TYPE_INT:
1717 case ATOMIC_TYPE_UINT:
1718 case ATOMIC_TYPE_LONG:
1719 case ATOMIC_TYPE_ULONG:
1720 case ATOMIC_TYPE_LONGLONG:
1721 case ATOMIC_TYPE_ULONGLONG:
1722 case ATOMIC_TYPE_BOOL: // gcc handles this as integer
1723 tc = integer_type_class;
1726 case ATOMIC_TYPE_FLOAT:
1727 case ATOMIC_TYPE_DOUBLE:
1728 case ATOMIC_TYPE_LONG_DOUBLE:
1729 tc = real_type_class;
1732 #ifdef PROVIDE_COMPLEX
1733 case ATOMIC_TYPE_FLOAT_COMPLEX:
1734 case ATOMIC_TYPE_DOUBLE_COMPLEX:
1735 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
1736 tc = complex_type_class;
1738 case ATOMIC_TYPE_FLOAT_IMAGINARY:
1739 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
1740 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
1741 tc = complex_type_class;
1746 panic("Unimplemented case in classify_type_to_firm().");
1751 case TYPE_ARRAY: // gcc handles this as pointer
1752 case TYPE_FUNCTION: // gcc handles this as pointer
1753 case TYPE_POINTER: tc = pointer_type_class; break;
1754 case TYPE_COMPOUND_STRUCT: tc = record_type_class; break;
1755 case TYPE_COMPOUND_UNION: tc = union_type_class; break;
1757 // gcc handles this as integer
1758 case TYPE_ENUM: tc = integer_type_class; break;
1761 panic("Unimplemented case in classify_type_to_firm().");
1764 dbg_info *const dbgi = get_dbg_info(&expr->expression.source_position);
1765 ir_mode *const mode = mode_Is;
1766 tarval *const tv = new_tarval_from_long(tc, mode);
1767 return new_d_Const(dbgi, mode, tv);
1770 static ir_node *function_name_to_firm(
1771 const string_literal_expression_t *const expr)
1773 if (current_function_name == NULL) {
1774 const source_position_t *const src_pos =
1775 &expr->expression.source_position;
1776 const char *const name = current_function_decl->symbol->string;
1777 current_function_name = string_to_firm(src_pos, "__func__", name);
1780 return current_function_name;
1783 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
1785 statement_t *statement = expr->statement;
1787 assert(statement->type == STATEMENT_COMPOUND);
1788 return compound_statement_to_firm((compound_statement_t*) statement);
1791 static ir_node *va_start_expression_to_firm(
1792 const va_start_expression_t *const expr)
1794 ir_type *const method_type = get_ir_type(current_function_decl->type);
1795 int const n = get_method_n_params(method_type) - 1;
1796 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
1797 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
1798 dbg_info *const dbgi =
1799 get_dbg_info(&expr->expression.source_position);
1800 ir_node *const no_mem = new_NoMem();
1801 ir_node *const arg_sel =
1802 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
1804 size_t const parm_size = get_type_size(expr->parameter->type);
1805 ir_node *const cnst = new_Const_long(mode_Iu, parm_size);
1806 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
1807 set_value_for_expression(expr->ap, add);
1812 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
1814 ir_type *const irtype = get_ir_type(expr->expression.datatype);
1815 ir_node *const ap = expression_to_firm(expr->ap);
1816 dbg_info *const dbgi = get_dbg_info(&expr->expression.source_position);
1817 ir_node *const res = deref_address(irtype, ap, dbgi);
1819 size_t const parm_size = get_type_size(expr->expression.datatype);
1820 ir_node *const cnst = new_Const_long(mode_Iu, parm_size);
1821 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
1822 set_value_for_expression(expr->ap, add);
1827 static ir_node *dereference_addr(const unary_expression_t *const expression)
1829 assert(expression->expression.type == EXPR_UNARY_DEREFERENCE);
1830 return expression_to_firm(expression->value);
1833 static ir_node *expression_to_addr(const expression_t *expression)
1835 switch(expression->type) {
1836 case EXPR_REFERENCE:
1837 return reference_addr(&expression->reference);
1838 case EXPR_ARRAY_ACCESS:
1839 return array_access_addr(&expression->array_access);
1841 return select_addr(&expression->select);
1843 return call_expression_to_firm(&expression->call);
1844 case EXPR_UNARY_DEREFERENCE: {
1845 return dereference_addr(&expression->unary);
1850 panic("trying to get address of non-lvalue");
1853 static ir_node *_expression_to_firm(const expression_t *expression)
1855 switch(expression->type) {
1857 return const_to_firm(&expression->conste);
1858 case EXPR_STRING_LITERAL:
1859 return string_literal_to_firm(&expression->string);
1860 case EXPR_WIDE_STRING_LITERAL:
1861 return wide_string_literal_to_firm(&expression->wide_string);
1862 case EXPR_REFERENCE:
1863 return reference_expression_to_firm(&expression->reference);
1865 return call_expression_to_firm(&expression->call);
1867 return unary_expression_to_firm(&expression->unary);
1869 return binary_expression_to_firm(&expression->binary);
1870 case EXPR_ARRAY_ACCESS:
1871 return array_access_to_firm(&expression->array_access);
1873 return sizeof_to_firm(&expression->sizeofe);
1874 case EXPR_CONDITIONAL:
1875 return conditional_to_firm(&expression->conditional);
1877 return select_to_firm(&expression->select);
1878 case EXPR_CLASSIFY_TYPE:
1879 return classify_type_to_firm(&expression->classify_type);
1881 case EXPR_PRETTY_FUNCTION:
1882 return function_name_to_firm(&expression->string);
1883 case EXPR_STATEMENT:
1884 return statement_expression_to_firm(&expression->statement);
1886 return va_start_expression_to_firm(&expression->va_starte);
1888 return va_arg_expression_to_firm(&expression->va_arge);
1890 case EXPR_BUILTIN_SYMBOL:
1891 panic("unimplemented expression found");
1897 panic("invalid expression found");
1900 static ir_node *expression_to_firm(const expression_t *expression)
1902 ir_node *res = _expression_to_firm(expression);
1904 if(res != NULL && get_irn_mode(res) == mode_b) {
1905 ir_mode *mode = get_ir_mode(expression->base.datatype);
1906 res = create_conv(NULL, res, mode);
1912 static ir_node *expression_to_modeb(const expression_t *expression)
1914 ir_node *res = _expression_to_firm(expression);
1915 res = create_conv(NULL, res, mode_b);
1921 * create a short-circuit expression evaluation that tries to construct
1922 * efficient control flow structures for &&, || and ! expressions
1924 static void create_condition_evaluation(const expression_t *expression,
1925 ir_node *true_block,
1926 ir_node *false_block)
1928 switch(expression->type) {
1929 case EXPR_UNARY_NOT: {
1930 const unary_expression_t *unary_expression = &expression->unary;
1931 create_condition_evaluation(unary_expression->value, false_block,
1935 case EXPR_BINARY_LOGICAL_AND: {
1936 const binary_expression_t *binary_expression = &expression->binary;
1938 ir_node *cur_block = get_cur_block();
1939 ir_node *extra_block = new_immBlock();
1940 set_cur_block(cur_block);
1941 create_condition_evaluation(binary_expression->left, extra_block,
1943 mature_immBlock(extra_block);
1944 set_cur_block(extra_block);
1945 create_condition_evaluation(binary_expression->right, true_block,
1949 case EXPR_BINARY_LOGICAL_OR: {
1950 const binary_expression_t *binary_expression = &expression->binary;
1952 ir_node *cur_block = get_cur_block();
1953 ir_node *extra_block = new_immBlock();
1954 set_cur_block(cur_block);
1955 create_condition_evaluation(binary_expression->left, true_block,
1957 mature_immBlock(extra_block);
1958 set_cur_block(extra_block);
1959 create_condition_evaluation(binary_expression->right, true_block,
1967 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1968 ir_node *condition = expression_to_modeb(expression);
1969 ir_node *cond = new_d_Cond(dbgi, condition);
1970 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1971 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1973 add_immBlock_pred(true_block, true_proj);
1974 add_immBlock_pred(false_block, false_proj);
1976 set_cur_block(NULL);
1981 static void create_declaration_entity(declaration_t *declaration,
1982 declaration_type_t declaration_type,
1983 ir_type *parent_type)
1985 ident *id = new_id_from_str(declaration->symbol->string);
1986 ir_type *irtype = get_ir_type(declaration->type);
1987 ir_entity *entity = new_entity(parent_type, id, irtype);
1988 set_entity_ld_ident(entity, id);
1990 declaration->declaration_type = (unsigned char) declaration_type;
1991 declaration->v.entity = entity;
1992 set_entity_variability(entity, variability_uninitialized);
1993 if(parent_type == get_tls_type())
1994 set_entity_allocation(entity, allocation_automatic);
1995 else if(declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE)
1996 set_entity_allocation(entity, allocation_static);
1997 /* TODO: visibility? */
2000 typedef struct compound_graph_path_entry_t compound_graph_path_entry_t;
2002 enum compound_graph_entry_type_t {
2003 COMPOUND_GRAPH_ENTRY_ARRAY,
2004 COMPOUND_GRAPH_ENTRY_COMPOUND
2007 struct compound_graph_path_entry_t {
2013 compound_graph_path_entry_t *prev;
2016 static void create_initializer_object(initializer_t *initializer, type_t *type,
2017 ir_entity *entity, compound_graph_path_entry_t *entry, int len);
2019 static compound_graph_path *create_compound_path(ir_type *type,
2020 compound_graph_path_entry_t *entry, int len)
2022 compound_graph_path *path = new_compound_graph_path(type, len);
2025 for( ; entry != NULL; entry = entry->prev, --i) {
2027 if(entry->type == COMPOUND_GRAPH_ENTRY_COMPOUND) {
2028 set_compound_graph_path_node(path, i, entry->v.entity);
2030 assert(entry->type == COMPOUND_GRAPH_ENTRY_ARRAY);
2031 set_compound_graph_path_array_index(path, i, entry->v.array_index);
2039 static void create_initializer_value(initializer_value_t *initializer,
2041 compound_graph_path_entry_t *entry,
2044 ir_node *node = expression_to_firm(initializer->value);
2045 ir_type *type = get_entity_type(entity);
2046 compound_graph_path *path = create_compound_path(type, entry, len);
2047 add_compound_ent_value_w_path(entity, node, path);
2050 static void create_initializer_compound(initializer_list_t *initializer,
2051 compound_type_t *type,
2053 compound_graph_path_entry_t *last_entry,
2056 declaration_t *compound_declaration = type->declaration;
2058 declaration_t *compound_entry = compound_declaration->context.declarations;
2060 compound_graph_path_entry_t entry;
2061 entry.type = COMPOUND_GRAPH_ENTRY_COMPOUND;
2062 entry.prev = last_entry;
2066 for( ; compound_entry != NULL; compound_entry = compound_entry->next) {
2067 if(compound_entry->symbol == NULL)
2069 if(compound_entry->namespc != NAMESPACE_NORMAL)
2072 if(i >= initializer->len)
2075 entry.v.entity = compound_entry->v.entity;
2077 initializer_t *sub_initializer = initializer->initializers[i];
2079 assert(compound_entry != NULL);
2080 assert(compound_entry->declaration_type
2081 == DECLARATION_TYPE_COMPOUND_MEMBER);
2083 if(sub_initializer->type == INITIALIZER_VALUE) {
2084 create_initializer_value(&sub_initializer->value,
2085 entity, &entry, len);
2087 type_t *entry_type = skip_typeref(compound_entry->type);
2088 create_initializer_object(sub_initializer, entry_type, entity,
2096 static void create_initializer_array(initializer_list_t *initializer,
2097 array_type_t *type, ir_entity *entity,
2098 compound_graph_path_entry_t *last_entry,
2101 type_t *element_type = type->element_type;
2102 element_type = skip_typeref(element_type);
2104 compound_graph_path_entry_t entry;
2105 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2106 entry.prev = last_entry;
2110 for(i = 0; i < initializer->len; ++i) {
2111 entry.v.array_index = i;
2113 initializer_t *sub_initializer = initializer->initializers[i];
2115 if(sub_initializer->type == INITIALIZER_VALUE) {
2116 create_initializer_value(&sub_initializer->value,
2117 entity, &entry, len);
2119 create_initializer_object(sub_initializer, element_type, entity,
2125 /* TODO: initialize rest... */
2126 if(type->size_expression != NULL) {
2127 size_t array_len = fold_constant(type->size_expression);
2128 for( ; i < array_len; ++i) {
2135 static void create_initializer_string(initializer_string_t *initializer,
2136 array_type_t *type, ir_entity *entity,
2137 compound_graph_path_entry_t *last_entry,
2140 type_t *element_type = type->element_type;
2141 element_type = skip_typeref(element_type);
2143 compound_graph_path_entry_t entry;
2144 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2145 entry.prev = last_entry;
2148 ir_type *irtype = get_entity_type(entity);
2149 size_t arr_len = get_array_type_size(type);
2150 const char *p = initializer->string;
2152 for(i = 0; i < arr_len; ++i, ++p) {
2153 entry.v.array_index = i;
2155 ir_node *node = new_Const_long(mode_Bs, *p);
2156 compound_graph_path *path = create_compound_path(irtype, &entry, len);
2157 add_compound_ent_value_w_path(entity, node, path);
2164 static void create_initializer_wide_string(
2165 const initializer_wide_string_t *const initializer, array_type_t *const type,
2166 ir_entity *const entity, compound_graph_path_entry_t *const last_entry,
2169 type_t *element_type = type->element_type;
2170 element_type = skip_typeref(element_type);
2172 compound_graph_path_entry_t entry;
2173 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2174 entry.prev = last_entry;
2177 ir_type *const irtype = get_entity_type(entity);
2178 const size_t arr_len = get_array_type_size(type);
2179 const wchar_rep_t * p = initializer->string.begin;
2180 const wchar_rep_t *const end = p + initializer->string.size;
2181 for (size_t i = 0; i < arr_len && p != end; ++i, ++p) {
2182 entry.v.array_index = i;
2184 ir_node *node = new_Const_long(mode_Is, *p);
2185 compound_graph_path *path = create_compound_path(irtype, &entry, len);
2186 add_compound_ent_value_w_path(entity, node, path);
2190 static void create_initializer_object(initializer_t *initializer, type_t *type,
2191 ir_entity *entity, compound_graph_path_entry_t *entry, int len)
2193 if(is_type_array(type)) {
2194 array_type_t *array_type = &type->array;
2196 switch (initializer->type) {
2197 case INITIALIZER_STRING: {
2198 initializer_string_t *const string = &initializer->string;
2199 create_initializer_string(string, array_type, entity, entry, len);
2203 case INITIALIZER_WIDE_STRING: {
2204 initializer_wide_string_t *const string = &initializer->wide_string;
2205 create_initializer_wide_string(string, array_type, entity, entry, len);
2209 case INITIALIZER_LIST: {
2210 initializer_list_t *const list = &initializer->list;
2211 create_initializer_array(list, array_type, entity, entry, len);
2215 case INITIALIZER_VALUE:
2218 panic("Unhandled initializer");
2220 assert(initializer->type == INITIALIZER_LIST);
2221 initializer_list_t *list = &initializer->list;
2223 assert(is_type_compound(type));
2224 compound_type_t *compound_type = &type->compound;
2225 create_initializer_compound(list, compound_type, entity, entry, len);
2229 static void create_initializer_local_variable_entity(declaration_t *declaration)
2231 initializer_t *initializer = declaration->init.initializer;
2232 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
2233 ir_entity *entity = declaration->v.entity;
2234 ir_node *memory = get_store();
2235 ir_node *nomem = new_NoMem();
2236 ir_node *frame = get_irg_frame(current_ir_graph);
2237 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
2239 if(initializer->type == INITIALIZER_VALUE) {
2240 initializer_value_t *initializer_value = &initializer->value;
2242 ir_node *value = expression_to_firm(initializer_value->value);
2243 type_t *type = skip_typeref(declaration->type);
2244 assign_value(dbgi, addr, type, value);
2248 /* create a "template" entity which is copied to the entity on the stack */
2249 ident *id = unique_ident("initializer");
2250 ir_type *irtype = get_ir_type(declaration->type);
2251 ir_type *global_type = get_glob_type();
2252 ir_entity *init_entity = new_entity(global_type, id, irtype);
2253 set_entity_ld_ident(init_entity, id);
2255 set_entity_variability(init_entity, variability_initialized);
2256 set_entity_visibility(init_entity, visibility_local);
2257 set_entity_allocation(init_entity, allocation_static);
2259 ir_graph *old_current_ir_graph = current_ir_graph;
2260 current_ir_graph = get_const_code_irg();
2262 type_t *type = skip_typeref(declaration->type);
2263 create_initializer_object(initializer, type, init_entity, NULL, 0);
2265 assert(current_ir_graph == get_const_code_irg());
2266 current_ir_graph = old_current_ir_graph;
2268 ir_node *src_addr = create_symconst(dbgi, init_entity);
2269 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
2271 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
2272 set_store(copyb_mem);
2275 static void create_initializer(declaration_t *declaration)
2277 initializer_t *initializer = declaration->init.initializer;
2278 if(initializer == NULL)
2281 declaration_type_t declaration_type
2282 = (declaration_type_t) declaration->declaration_type;
2283 if(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY) {
2284 create_initializer_local_variable_entity(declaration);
2288 if(initializer->type == INITIALIZER_VALUE) {
2289 initializer_value_t *initializer_value = &initializer->value;
2291 ir_node *value = expression_to_firm(initializer_value->value);
2293 if(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
2294 set_value(declaration->v.value_number, value);
2296 assert(declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
2298 ir_entity *entity = declaration->v.entity;
2300 set_entity_variability(entity, variability_initialized);
2301 set_atomic_ent_value(entity, value);
2304 assert(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY
2305 || declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
2307 ir_entity *entity = declaration->v.entity;
2308 set_entity_variability(entity, variability_initialized);
2310 type_t *type = skip_typeref(declaration->type);
2311 create_initializer_object(initializer, type, entity, NULL, 0);
2315 static void create_local_variable(declaration_t *declaration)
2317 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
2319 bool needs_entity = declaration->address_taken;
2320 type_t *type = skip_typeref(declaration->type);
2322 if(is_type_array(type) || is_type_compound(type)) {
2323 needs_entity = true;
2327 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2328 create_declaration_entity(declaration,
2329 DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
2332 declaration->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
2333 declaration->v.value_number = next_value_number_function;
2334 ++next_value_number_function;
2337 create_initializer(declaration);
2340 static void create_local_static_variable(declaration_t *declaration)
2342 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
2344 type_t *type = skip_typeref(declaration->type);
2345 ir_type *global_type = get_glob_type();
2346 ident *id = unique_ident(declaration->symbol->string);
2347 ir_type *irtype = get_ir_type(type);
2348 ir_entity *entity = new_entity(global_type, id, irtype);
2349 set_entity_ld_ident(entity, id);
2351 declaration->declaration_type = DECLARATION_TYPE_GLOBAL_VARIABLE;
2352 declaration->v.entity = entity;
2353 set_entity_variability(entity, variability_uninitialized);
2354 set_entity_visibility(entity, visibility_local);
2355 set_entity_allocation(entity, allocation_static);
2357 ir_graph *old_current_ir_graph = current_ir_graph;
2358 current_ir_graph = get_const_code_irg();
2360 create_initializer(declaration);
2362 assert(current_ir_graph == get_const_code_irg());
2363 current_ir_graph = old_current_ir_graph;
2368 static void return_statement_to_firm(return_statement_t *statement)
2370 if(get_cur_block() == NULL)
2373 ir_type *func_irtype = get_ir_type(current_function_decl->type);
2375 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
2379 if(get_method_n_ress(func_irtype) > 0) {
2380 ir_type *res_type = get_method_res_type(func_irtype, 0);
2382 if(statement->return_value != NULL) {
2383 ir_node *node = expression_to_firm(statement->return_value);
2384 node = do_strict_conv(dbgi, node);
2388 if(is_compound_type(res_type)) {
2391 mode = get_type_mode(res_type);
2393 in[0] = new_Unknown(mode);
2397 /* build return_value for its side effects */
2398 if(statement->return_value != NULL) {
2399 expression_to_firm(statement->return_value);
2404 ir_node *store = get_store();
2405 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
2407 ir_node *end_block = get_irg_end_block(current_ir_graph);
2408 add_immBlock_pred(end_block, ret);
2410 set_cur_block(NULL);
2413 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
2415 if(get_cur_block() == NULL)
2418 return expression_to_firm(statement->expression);
2421 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
2423 ir_node *result = NULL;
2424 statement_t *statement = compound->statements;
2425 for( ; statement != NULL; statement = statement->base.next) {
2426 //context2firm(&statement->context);
2428 if(statement->base.next == NULL
2429 && statement->type == STATEMENT_EXPRESSION) {
2430 result = expression_statement_to_firm(
2431 (expression_statement_t*) statement);
2434 statement_to_firm(statement);
2440 static void create_local_declaration(declaration_t *declaration)
2442 type_t *type = skip_typeref(declaration->type);
2444 switch ((storage_class_tag_t) declaration->storage_class) {
2445 case STORAGE_CLASS_STATIC:
2446 create_local_static_variable(declaration);
2448 case STORAGE_CLASS_ENUM_ENTRY:
2449 panic("enum entry declaration in local block found");
2450 case STORAGE_CLASS_EXTERN:
2451 panic("extern declaration in local block found");
2452 case STORAGE_CLASS_NONE:
2453 case STORAGE_CLASS_AUTO:
2454 case STORAGE_CLASS_REGISTER:
2455 if(is_type_function(type)) {
2456 panic("nested functions not supported yet");
2458 create_local_variable(declaration);
2461 case STORAGE_CLASS_TYPEDEF:
2462 case STORAGE_CLASS_THREAD:
2463 case STORAGE_CLASS_THREAD_EXTERN:
2464 case STORAGE_CLASS_THREAD_STATIC:
2467 panic("invalid storage class found");
2470 static void declaration_statement_to_firm(declaration_statement_t *statement)
2472 declaration_t *declaration = statement->declarations_begin;
2473 declaration_t *end = statement->declarations_end->next;
2474 for( ; declaration != end; declaration = declaration->next) {
2475 create_local_variable(declaration);
2479 static void if_statement_to_firm(if_statement_t *statement)
2481 ir_node *cur_block = get_cur_block();
2483 ir_node *fallthrough_block = new_immBlock();
2485 /* the true (blocks) */
2486 ir_node *true_block;
2487 if (statement->true_statement != NULL) {
2488 true_block = new_immBlock();
2489 statement_to_firm(statement->true_statement);
2490 if(get_cur_block() != NULL) {
2491 ir_node *jmp = new_Jmp();
2492 add_immBlock_pred(fallthrough_block, jmp);
2495 true_block = fallthrough_block;
2498 /* the false (blocks) */
2499 ir_node *false_block;
2500 if(statement->false_statement != NULL) {
2501 false_block = new_immBlock();
2503 statement_to_firm(statement->false_statement);
2504 if(get_cur_block() != NULL) {
2505 ir_node *jmp = new_Jmp();
2506 add_immBlock_pred(fallthrough_block, jmp);
2509 false_block = fallthrough_block;
2512 /* create the condition */
2513 if(cur_block != NULL) {
2514 set_cur_block(cur_block);
2515 create_condition_evaluation(statement->condition, true_block,
2519 mature_immBlock(true_block);
2520 if(false_block != fallthrough_block) {
2521 mature_immBlock(false_block);
2523 mature_immBlock(fallthrough_block);
2525 set_cur_block(fallthrough_block);
2528 static void while_statement_to_firm(while_statement_t *statement)
2530 ir_node *jmp = NULL;
2531 if(get_cur_block() != NULL) {
2535 /* create the header block */
2536 ir_node *header_block = new_immBlock();
2538 add_immBlock_pred(header_block, jmp);
2541 /* the false block */
2542 ir_node *false_block = new_immBlock();
2545 ir_node *body_block;
2546 if (statement->body != NULL) {
2547 ir_node *old_continue_label = continue_label;
2548 ir_node *old_break_label = break_label;
2549 continue_label = header_block;
2550 break_label = false_block;
2552 body_block = new_immBlock();
2553 statement_to_firm(statement->body);
2555 assert(continue_label == header_block);
2556 assert(break_label == false_block);
2557 continue_label = old_continue_label;
2558 break_label = old_break_label;
2560 if(get_cur_block() != NULL) {
2562 add_immBlock_pred(header_block, jmp);
2565 body_block = header_block;
2568 /* create the condition */
2569 set_cur_block(header_block);
2571 create_condition_evaluation(statement->condition, body_block, false_block);
2572 mature_immBlock(body_block);
2573 mature_immBlock(false_block);
2574 mature_immBlock(header_block);
2576 set_cur_block(false_block);
2579 static void do_while_statement_to_firm(do_while_statement_t *statement)
2581 ir_node *jmp = NULL;
2582 if(get_cur_block() != NULL) {
2586 /* create the header block */
2587 ir_node *header_block = new_immBlock();
2589 /* the false block */
2590 ir_node *false_block = new_immBlock();
2593 ir_node *body_block = new_immBlock();
2595 add_immBlock_pred(body_block, jmp);
2598 if (statement->body != NULL) {
2599 ir_node *old_continue_label = continue_label;
2600 ir_node *old_break_label = break_label;
2601 continue_label = header_block;
2602 break_label = false_block;
2604 statement_to_firm(statement->body);
2606 assert(continue_label == header_block);
2607 assert(break_label == false_block);
2608 continue_label = old_continue_label;
2609 break_label = old_break_label;
2611 if (get_cur_block() == NULL) {
2612 mature_immBlock(header_block);
2613 mature_immBlock(body_block);
2614 mature_immBlock(false_block);
2619 ir_node *body_jmp = new_Jmp();
2620 add_immBlock_pred(header_block, body_jmp);
2621 mature_immBlock(header_block);
2623 /* create the condition */
2624 set_cur_block(header_block);
2626 create_condition_evaluation(statement->condition, body_block, false_block);
2627 mature_immBlock(body_block);
2628 mature_immBlock(false_block);
2629 mature_immBlock(header_block);
2631 set_cur_block(false_block);
2634 static void for_statement_to_firm(for_statement_t *statement)
2636 ir_node *jmp = NULL;
2637 if (get_cur_block() != NULL) {
2638 if(statement->initialisation != NULL) {
2639 expression_to_firm(statement->initialisation);
2642 /* create declarations */
2643 declaration_t *declaration = statement->context.declarations;
2644 for( ; declaration != NULL; declaration = declaration->next) {
2645 create_local_declaration(declaration);
2652 /* create the step block */
2653 ir_node *const step_block = new_immBlock();
2654 if (statement->step != NULL) {
2655 expression_to_firm(statement->step);
2657 ir_node *const step_jmp = new_Jmp();
2659 /* create the header block */
2660 ir_node *const header_block = new_immBlock();
2662 add_immBlock_pred(header_block, jmp);
2664 add_immBlock_pred(header_block, step_jmp);
2666 /* the false block */
2667 ir_node *const false_block = new_immBlock();
2670 ir_node * body_block;
2671 if (statement->body != NULL) {
2672 ir_node *const old_continue_label = continue_label;
2673 ir_node *const old_break_label = break_label;
2674 continue_label = step_block;
2675 break_label = false_block;
2677 body_block = new_immBlock();
2678 statement_to_firm(statement->body);
2680 assert(continue_label == step_block);
2681 assert(break_label == false_block);
2682 continue_label = old_continue_label;
2683 break_label = old_break_label;
2685 if (get_cur_block() != NULL) {
2687 add_immBlock_pred(step_block, jmp);
2690 body_block = step_block;
2693 /* create the condition */
2694 set_cur_block(header_block);
2695 if (statement->condition != NULL) {
2696 create_condition_evaluation(statement->condition, body_block,
2699 keep_alive(header_block);
2701 add_immBlock_pred(body_block, jmp);
2704 mature_immBlock(body_block);
2705 mature_immBlock(false_block);
2706 mature_immBlock(step_block);
2707 mature_immBlock(header_block);
2708 mature_immBlock(false_block);
2710 set_cur_block(false_block);
2713 static void create_jump_statement(const statement_t *statement,
2714 ir_node *target_block)
2716 if(get_cur_block() == NULL)
2719 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
2720 ir_node *jump = new_d_Jmp(dbgi);
2721 add_immBlock_pred(target_block, jump);
2723 set_cur_block(NULL);
2726 static void switch_statement_to_firm(const switch_statement_t *statement)
2728 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
2730 ir_node *expression = expression_to_firm(statement->expression);
2731 ir_node *cond = new_d_Cond(dbgi, expression);
2732 ir_node *break_block = new_immBlock();
2734 set_cur_block(NULL);
2736 ir_node *const old_switch_cond = current_switch_cond;
2737 ir_node *const old_break_label = break_label;
2738 const bool old_saw_default_label = saw_default_label;
2739 current_switch_cond = cond;
2740 break_label = break_block;
2742 statement_to_firm(statement->body);
2744 if(get_cur_block() != NULL) {
2745 ir_node *jmp = new_Jmp();
2746 add_immBlock_pred(break_block, jmp);
2749 if (!saw_default_label) {
2750 set_cur_block(get_nodes_block(cond));
2751 ir_node *const proj = new_d_defaultProj(dbgi, cond,
2752 MAGIC_DEFAULT_PN_NUMBER);
2753 add_immBlock_pred(break_block, proj);
2756 assert(current_switch_cond == cond);
2757 assert(break_label == break_block);
2758 current_switch_cond = old_switch_cond;
2759 break_label = old_break_label;
2760 saw_default_label = old_saw_default_label;
2762 mature_immBlock(break_block);
2763 set_cur_block(break_block);
2766 static void case_label_to_firm(const case_label_statement_t *statement)
2768 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
2770 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
2772 /* let's create a node and hope firm constant folding creates a Const
2775 set_cur_block(get_nodes_block(current_switch_cond));
2776 if(statement->expression) {
2777 long pn = fold_constant(statement->expression);
2778 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
2779 /* oops someone detected our cheating... */
2780 panic("magic default pn used");
2782 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
2784 saw_default_label = true;
2785 proj = new_d_defaultProj(dbgi, current_switch_cond,
2786 MAGIC_DEFAULT_PN_NUMBER);
2789 ir_node *block = new_immBlock();
2790 if (fallthrough != NULL) {
2791 add_immBlock_pred(block, fallthrough);
2793 add_immBlock_pred(block, proj);
2794 mature_immBlock(block);
2796 statement_to_firm(statement->label_statement);
2799 static ir_node *get_label_block(declaration_t *label)
2801 assert(label->namespc == NAMESPACE_LABEL);
2803 if(label->declaration_type == DECLARATION_TYPE_LABEL_BLOCK) {
2804 return label->v.block;
2806 assert(label->declaration_type == DECLARATION_TYPE_UNKNOWN);
2808 ir_node *old_cur_block = get_cur_block();
2809 ir_node *block = new_immBlock();
2810 set_cur_block(old_cur_block);
2812 label->declaration_type = DECLARATION_TYPE_LABEL_BLOCK;
2813 label->v.block = block;
2815 ARR_APP1(ir_node *, imature_blocks, block);
2820 static void label_to_firm(const label_statement_t *statement)
2822 ir_node *block = get_label_block(statement->label);
2824 if(get_cur_block() != NULL) {
2825 ir_node *jmp = new_Jmp();
2826 add_immBlock_pred(block, jmp);
2829 set_cur_block(block);
2832 statement_to_firm(statement->label_statement);
2835 static void goto_to_firm(const goto_statement_t *statement)
2837 if(get_cur_block() == NULL)
2840 ir_node *block = get_label_block(statement->label);
2841 ir_node *jmp = new_Jmp();
2842 add_immBlock_pred(block, jmp);
2844 set_cur_block(NULL);
2847 typedef enum modifier_t {
2848 ASM_MODIFIER_WRITE_ONLY = 1 << 0,
2849 ASM_MODIFIER_READ_WRITE = 1 << 1,
2850 ASM_MODIFIER_COMMUTATIVE = 1 << 2,
2851 ASM_MODIFIER_EARLYCLOBBER = 1 << 3,
2855 static void asm_statement_to_firm(const asm_statement_t *statement)
2857 bool needs_memory = false;
2859 size_t n_clobbers = 0;
2860 asm_clobber_t *clobber = statement->clobbers;
2861 for( ; clobber != NULL; clobber = clobber->next) {
2862 if(strcmp(clobber->clobber, "memory") == 0) {
2863 needs_memory = true;
2867 ident *id = new_id_from_str(clobber->clobber);
2868 obstack_ptr_grow(&asm_obst, id);
2871 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
2872 ident **clobbers = NULL;
2873 if(n_clobbers > 0) {
2874 clobbers = obstack_finish(&asm_obst);
2877 /* find and count input and output constraints */
2878 asm_constraint_t *constraint = statement->inputs;
2879 for( ; constraint != NULL; constraint = constraint->next) {
2881 bool supports_memop = false;
2882 for(const char *c = constraint->constraints; *c != 0; ++c) {
2883 /* TODO: improve error messages */
2887 panic("multiple alternative assembler constraints not "
2895 supports_memop = true;
2896 obstack_1grow(&asm_obst, *c);
2899 if(modifiers & ASM_MODIFIER_READ_WRITE)
2900 panic("inconsistent register constraints");
2901 modifiers |= ASM_MODIFIER_WRITE_ONLY;
2904 if(modifiers & ASM_MODIFIER_WRITE_ONLY)
2905 panic("inconsistent register constraints");
2906 modifiers |= ASM_MODIFIER_READ_WRITE;
2909 modifiers |= ASM_MODIFIER_EARLYCLOBBER;
2910 panic("early clobber assembler constraint not supported yet");
2913 modifiers |= ASM_MODIFIER_COMMUTATIVE;
2914 panic("commutative assembler constraint not supported yet");
2917 /* skip register preferences stuff... */
2918 while(*c != 0 && *c != ',')
2922 /* skip register preferences stuff... */
2926 obstack_1grow(&asm_obst, *c);
2930 obstack_1grow(&asm_obst, '\0');
2931 const char *constraint_string = obstack_finish(&asm_obst);
2933 needs_memory |= supports_memop;
2934 if(supports_memop) {
2942 static void statement_to_firm(statement_t *statement)
2944 switch(statement->type) {
2945 case STATEMENT_INVALID:
2946 panic("invalid statement found");
2947 case STATEMENT_COMPOUND:
2948 compound_statement_to_firm(&statement->compound);
2950 case STATEMENT_RETURN:
2951 return_statement_to_firm(&statement->returns);
2953 case STATEMENT_EXPRESSION:
2954 expression_statement_to_firm(&statement->expression);
2957 if_statement_to_firm(&statement->ifs);
2959 case STATEMENT_WHILE:
2960 while_statement_to_firm(&statement->whiles);
2962 case STATEMENT_DO_WHILE:
2963 do_while_statement_to_firm(&statement->do_while);
2965 case STATEMENT_DECLARATION:
2966 declaration_statement_to_firm(&statement->declaration);
2968 case STATEMENT_BREAK:
2969 create_jump_statement(statement, break_label);
2971 case STATEMENT_CONTINUE:
2972 create_jump_statement(statement, continue_label);
2974 case STATEMENT_SWITCH:
2975 switch_statement_to_firm(&statement->switchs);
2977 case STATEMENT_CASE_LABEL:
2978 case_label_to_firm(&statement->case_label);
2981 for_statement_to_firm(&statement->fors);
2983 case STATEMENT_LABEL:
2984 label_to_firm(&statement->label);
2986 case STATEMENT_GOTO:
2987 goto_to_firm(&statement->gotos);
2990 //asm_statement_to_firm(&statement->asms);
2994 panic("Statement not implemented\n");
2997 static int count_local_declarations(const declaration_t * decl,
2998 const declaration_t *const end)
3001 for (; decl != end; decl = decl->next) {
3002 const type_t *type = skip_typeref(decl->type);
3003 switch (type->type) {
3007 if (!decl->address_taken)
3017 static int count_decls_in_stmts(const statement_t *stmt)
3020 for (; stmt != NULL; stmt = stmt->base.next) {
3021 switch (stmt->type) {
3022 case STATEMENT_DECLARATION: {
3023 const declaration_statement_t *const decl_stmt =
3024 (const declaration_statement_t*)stmt;
3025 count += count_local_declarations(decl_stmt->declarations_begin,
3026 decl_stmt->declarations_end->next);
3030 case STATEMENT_COMPOUND: {
3031 const compound_statement_t *const comp =
3032 (const compound_statement_t*)stmt;
3033 count += count_decls_in_stmts(comp->statements);
3037 case STATEMENT_IF: {
3038 const if_statement_t *const if_stmt = (const if_statement_t*)stmt;
3039 count += count_decls_in_stmts(if_stmt->true_statement);
3040 count += count_decls_in_stmts(if_stmt->false_statement);
3044 case STATEMENT_SWITCH: {
3045 const switch_statement_t *const switch_stmt =
3046 (const switch_statement_t*)stmt;
3047 count += count_decls_in_stmts(switch_stmt->body);
3051 case STATEMENT_LABEL: {
3052 const label_statement_t *const label_stmt =
3053 (const label_statement_t*)stmt;
3054 count += count_decls_in_stmts(label_stmt->label_statement);
3058 case STATEMENT_WHILE: {
3059 const while_statement_t *const while_stmt =
3060 (const while_statement_t*)stmt;
3061 count += count_decls_in_stmts(while_stmt->body);
3065 case STATEMENT_DO_WHILE: {
3066 const do_while_statement_t *const do_while_stmt =
3067 (const do_while_statement_t*)stmt;
3068 count += count_decls_in_stmts(do_while_stmt->body);
3072 case STATEMENT_FOR: {
3073 const for_statement_t *const for_stmt =
3074 (const for_statement_t*)stmt;
3075 /* TODO initialisation */
3076 count += count_decls_in_stmts(for_stmt->body);
3081 case STATEMENT_BREAK:
3082 case STATEMENT_CASE_LABEL:
3083 case STATEMENT_CONTINUE:
3084 case STATEMENT_EXPRESSION:
3085 case STATEMENT_GOTO:
3086 case STATEMENT_INVALID:
3087 case STATEMENT_RETURN:
3094 static int get_function_n_local_vars(declaration_t *declaration)
3098 /* count parameters */
3099 count += count_local_declarations(declaration->context.declarations, NULL);
3101 /* count local variables declared in body */
3102 count += count_decls_in_stmts(declaration->init.statement);
3104 /* TODO FIXME: Matze: I'm lazy don't want to scan all expressions
3105 * for expression statements... */
3111 static void initialize_function_parameters(declaration_t *declaration)
3113 ir_graph *irg = current_ir_graph;
3114 ir_node *args = get_irg_args(irg);
3115 ir_node *start_block = get_irg_start_block(irg);
3116 ir_type *function_irtype = get_ir_type(declaration->type);
3119 declaration_t *parameter = declaration->context.declarations;
3120 for( ; parameter != NULL; parameter = parameter->next, ++n) {
3121 assert(parameter->declaration_type == DECLARATION_TYPE_UNKNOWN);
3122 type_t *type = skip_typeref(parameter->type);
3124 bool needs_entity = parameter->address_taken;
3125 assert(!is_type_array(type));
3126 if(is_type_compound(type)) {
3127 needs_entity = true;
3131 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
3132 ident *id = new_id_from_str(parameter->symbol->string);
3133 set_entity_ident(entity, id);
3135 parameter->declaration_type
3136 = DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY;
3137 parameter->v.entity = entity;
3141 ir_mode *mode = get_ir_mode(parameter->type);
3143 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
3145 parameter->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
3146 parameter->v.value_number = next_value_number_function;
3147 ++next_value_number_function;
3149 set_value(parameter->v.value_number, proj);
3153 static void create_function(declaration_t *declaration)
3155 ir_entity *function_entity = get_function_entity(declaration);
3157 if(declaration->init.statement == NULL)
3160 current_function_decl = declaration;
3161 current_function_name = NULL;
3163 assert(imature_blocks == NULL);
3164 imature_blocks = NEW_ARR_F(ir_node*, 0);
3166 int n_local_vars = get_function_n_local_vars(declaration);
3167 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
3168 ir_node *first_block = get_cur_block();
3170 next_value_number_function = 0;
3171 initialize_function_parameters(declaration);
3173 statement_to_firm(declaration->init.statement);
3175 ir_node *end_block = get_irg_end_block(irg);
3177 /* do we have a return statement yet? */
3178 if(get_cur_block() != NULL) {
3179 type_t *type = skip_typeref(declaration->type);
3180 assert(is_type_function(type));
3181 const function_type_t *func_type = &type->function;
3182 const type_t *return_type
3183 = skip_typeref(func_type->return_type);
3186 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
3187 ret = new_Return(get_store(), 0, NULL);
3190 if(is_type_scalar(return_type)) {
3191 mode = get_ir_mode(func_type->return_type);
3197 // ยง5.1.2.2.3 main implicitly returns 0
3198 if (strcmp(declaration->symbol->string, "main") == 0) {
3199 in[0] = new_Const(mode, get_mode_null(mode));
3201 in[0] = new_Unknown(mode);
3203 ret = new_Return(get_store(), 1, in);
3205 add_immBlock_pred(end_block, ret);
3208 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
3209 mature_immBlock(imature_blocks[i]);
3211 DEL_ARR_F(imature_blocks);
3212 imature_blocks = NULL;
3214 mature_immBlock(first_block);
3215 mature_immBlock(end_block);
3217 irg_finalize_cons(irg);
3219 /* finalize the frame type */
3220 ir_type *frame_type = get_irg_frame_type(irg);
3221 int n = get_compound_n_members(frame_type);
3224 for(int i = 0; i < n; ++i) {
3225 ir_entity *entity = get_compound_member(frame_type, i);
3226 ir_type *entity_type = get_entity_type(entity);
3228 int align = get_type_alignment_bytes(entity_type);
3229 if(align > align_all)
3233 misalign = offset % align;
3235 offset += align - misalign;
3239 set_entity_offset(entity, offset);
3240 offset += get_type_size_bytes(entity_type);
3242 set_type_size_bytes(frame_type, offset);
3243 set_type_alignment_bytes(frame_type, align_all);
3244 set_type_state(frame_type, layout_fixed);
3249 static void create_global_variable(declaration_t *declaration)
3253 switch ((storage_class_tag_t)declaration->storage_class) {
3254 case STORAGE_CLASS_STATIC:
3255 vis = visibility_local;
3258 case STORAGE_CLASS_EXTERN:
3259 vis = visibility_external_allocated;
3262 case STORAGE_CLASS_NONE:
3263 vis = visibility_external_visible;
3266 case STORAGE_CLASS_THREAD:
3267 vis = visibility_external_visible;
3270 case STORAGE_CLASS_THREAD_EXTERN:
3271 vis = visibility_external_allocated;
3274 case STORAGE_CLASS_THREAD_STATIC:
3275 vis = visibility_local;
3279 var_type = get_tls_type();
3283 var_type = get_glob_type();
3287 create_declaration_entity(declaration, DECLARATION_TYPE_GLOBAL_VARIABLE,
3289 set_entity_visibility(declaration->v.entity, vis);
3291 current_ir_graph = get_const_code_irg();
3292 create_initializer(declaration);
3295 case STORAGE_CLASS_TYPEDEF:
3296 case STORAGE_CLASS_AUTO:
3297 case STORAGE_CLASS_REGISTER:
3298 case STORAGE_CLASS_ENUM_ENTRY:
3301 panic("Invalid storage class for global variable");
3304 static void context_to_firm(context_t *context)
3306 /* first pass: create declarations */
3307 declaration_t *declaration = context->declarations;
3308 for( ; declaration != NULL; declaration = declaration->next) {
3309 if(declaration->namespc != NAMESPACE_NORMAL)
3311 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
3312 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
3314 if(declaration->symbol == NULL)
3317 type_t *type = skip_typeref(declaration->type);
3318 if(is_type_function(type)) {
3319 get_function_entity(declaration);
3321 create_global_variable(declaration);
3325 /* second pass: create code */
3326 declaration = context->declarations;
3327 for( ; declaration != NULL; declaration = declaration->next) {
3328 if(declaration->namespc != NAMESPACE_NORMAL)
3330 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
3331 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
3333 if(declaration->symbol == NULL)
3336 type_t *type = declaration->type;
3337 if(type->type != TYPE_FUNCTION)
3340 create_function(declaration);
3344 void translation_unit_to_firm(translation_unit_t *unit)
3346 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
3347 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
3348 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
3350 ir_type_int = get_ir_type(type_int);
3351 ir_type_const_char = get_ir_type(type_const_char);
3352 ir_type_wchar_t = get_ir_type(type_wchar_t);
3353 ir_type_void = get_ir_type(type_int); /* we don't have a real void
3356 type_void->base.firm_type = ir_type_void;
3358 /* just to be sure */
3359 continue_label = NULL;
3361 current_switch_cond = NULL;
3363 context_to_firm(& unit->context);