9 #include <libfirm/firm.h>
10 #include <libfirm/adt/obst.h>
14 #include "adt/error.h"
15 #include "adt/array.h"
20 #include "diagnostic.h"
21 #include "lang_features.h"
23 #include "driver/firm_opt.h"
24 #include "driver/firm_cmdline.h"
26 #define MAGIC_DEFAULT_PN_NUMBER (long) -314159265
28 static ir_type *ir_type_const_char;
29 static ir_type *ir_type_wchar_t;
30 static ir_type *ir_type_void;
31 static ir_type *ir_type_int;
33 static type_t *type_const_char;
35 static int next_value_number_function;
36 static ir_node *continue_label;
37 static ir_node *break_label;
38 static ir_node *current_switch_cond;
39 static bool saw_default_label;
40 static ir_node **imature_blocks;
42 static const declaration_t *current_function_decl;
43 static ir_node *current_function_name;
45 static struct obstack asm_obst;
47 typedef enum declaration_kind_t {
48 DECLARATION_KIND_UNKNOWN,
49 DECLARATION_KIND_FUNCTION,
50 DECLARATION_KIND_GLOBAL_VARIABLE,
51 DECLARATION_KIND_LOCAL_VARIABLE,
52 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
53 DECLARATION_KIND_COMPOUND_MEMBER,
54 DECLARATION_KIND_LABEL_BLOCK,
55 DECLARATION_KIND_ENUM_ENTRY
58 static ir_type *get_ir_type(type_t *type);
59 static int count_decls_in_stmts(const statement_t *stmt);
61 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
63 const declaration_t *declaration = get_irg_loc_description(irg, pos);
65 warningf(declaration->source_position,
66 "variable '%#T' might be used uninitialized",
67 declaration->type, declaration->symbol);
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 static dbg_info *get_dbg_info(const source_position_t *pos)
92 return (dbg_info*) pos;
95 static unsigned unique_id = 0;
97 static ident *unique_ident(const char *tag)
101 snprintf(buf, sizeof(buf), "%s.%u", tag, unique_id);
103 return new_id_from_str(buf);
107 * Return the signed integer mode of size bytes.
109 * @param size the size
111 static ir_mode *get_smode(unsigned size)
113 static ir_mode *s_modes[16 + 1] = {0, };
116 if (size <= 0 || size > 16)
125 snprintf(name, sizeof(name), "i%u", bits);
126 res = new_ir_mode(name, irms_int_number, bits, 1, irma_twos_complement,
127 bits <= machine_size ? machine_size : bits );
135 * Return the unsigned integer mode of size bytes.
137 * @param size the size
139 static ir_mode *get_umode(unsigned size)
141 static ir_mode *u_modes[16 + 1] = {0, };
144 if (size <= 0 || size > 16)
153 snprintf(name, sizeof(name), "u%u", bits);
154 res = new_ir_mode(name, irms_int_number, bits, 0, irma_twos_complement,
155 bits <= machine_size ? machine_size : bits );
163 * Return the pointer mode of size bytes.
165 * @param size the size
167 static ir_mode *get_ptrmode(unsigned size, char *name)
169 static ir_mode *p_modes[16 + 1] = {0, };
172 if (size <= 0 || size > 16)
182 snprintf(buf, sizeof(buf), "p%u", bits);
185 res = new_ir_mode(name, irms_reference, bits, 0, irma_twos_complement,
186 bits <= machine_size ? machine_size : bits);
190 set_reference_mode_signed_eq(res, get_smode(size));
191 set_reference_mode_unsigned_eq(res, get_umode(size));
196 static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST];
198 static ir_mode *mode_int, *mode_uint;
201 * Initialises the atomic modes depending on the machine size.
203 static void init_atomic_modes(void) {
204 unsigned int_size = machine_size < 32 ? 2 : 4;
205 unsigned long_size = machine_size < 64 ? 4 : 8;
206 unsigned llong_size = machine_size < 32 ? 4 : 8;
208 /* firm has no real void... */
209 _atomic_modes[ATOMIC_TYPE_VOID] = mode_T;
210 _atomic_modes[ATOMIC_TYPE_CHAR] = char_is_signed ? get_smode(1) : get_umode(1);
211 _atomic_modes[ATOMIC_TYPE_SCHAR] = get_smode(1);
212 _atomic_modes[ATOMIC_TYPE_UCHAR] = get_umode(1);
213 _atomic_modes[ATOMIC_TYPE_SHORT] = get_smode(2);
214 _atomic_modes[ATOMIC_TYPE_USHORT] = get_umode(2);
215 _atomic_modes[ATOMIC_TYPE_INT] = get_smode(int_size);
216 _atomic_modes[ATOMIC_TYPE_UINT] = get_umode(int_size);
217 _atomic_modes[ATOMIC_TYPE_LONG] = get_smode(long_size);
218 _atomic_modes[ATOMIC_TYPE_ULONG] = get_umode(long_size);
219 _atomic_modes[ATOMIC_TYPE_LONGLONG] = get_smode(llong_size);
220 _atomic_modes[ATOMIC_TYPE_ULONGLONG] = get_umode(llong_size);
221 _atomic_modes[ATOMIC_TYPE_FLOAT] = mode_F;
222 _atomic_modes[ATOMIC_TYPE_DOUBLE] = mode_D;
223 _atomic_modes[ATOMIC_TYPE_LONG_DOUBLE] = mode_E;
224 _atomic_modes[ATOMIC_TYPE_BOOL] = get_umode(int_size);
226 #ifdef PROVIDE_COMPLEX
227 _atomic_modes[ATOMIC_TYPE_BOOL] = _atomic_modes[ATOMIC_TYPE_INT];
228 _atomic_modes[ATOMIC_TYPE_FLOAT_IMAGINARY] = _atomic_modes[ATOMIC_TYPE_FLOAT];
229 _atomic_modes[ATOMIC_TYPE_DOUBLE_IMAGINARY] = _atomic_modes[ATOMIC_TYPE_DOUBLE];
230 _atomic_modes[ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY] = _atomic_modes[ATOMIC_TYPE_LONG_DOUBLE];
233 /* Hmm, pointers should be machine size */
234 set_modeP_data(get_ptrmode(machine_size >> 3, NULL));
235 set_modeP_code(get_ptrmode(machine_size >> 3, NULL));
237 mode_int = _atomic_modes[ATOMIC_TYPE_INT];
238 mode_uint = _atomic_modes[ATOMIC_TYPE_UINT];
241 static ir_mode *get_atomic_mode(const atomic_type_t* atomic_type)
244 if ((unsigned)atomic_type->akind < (unsigned)ATOMIC_TYPE_LAST)
245 res = _atomic_modes[(unsigned)atomic_type->akind];
247 panic("Encountered unknown atomic type");
251 static unsigned get_type_size(type_t *type);
253 static unsigned get_atomic_type_size(const atomic_type_t *type)
255 switch(type->akind) {
256 case ATOMIC_TYPE_CHAR:
257 case ATOMIC_TYPE_SCHAR:
258 case ATOMIC_TYPE_UCHAR:
261 case ATOMIC_TYPE_SHORT:
262 case ATOMIC_TYPE_USHORT:
265 case ATOMIC_TYPE_BOOL:
266 case ATOMIC_TYPE_INT:
267 case ATOMIC_TYPE_UINT:
268 return machine_size >> 3;
270 case ATOMIC_TYPE_LONG:
271 case ATOMIC_TYPE_ULONG:
272 return machine_size > 16 ? machine_size >> 3 : 4;
274 case ATOMIC_TYPE_LONGLONG:
275 case ATOMIC_TYPE_ULONGLONG:
276 return machine_size > 16 ? 8 : 4;
278 case ATOMIC_TYPE_FLOAT:
281 case ATOMIC_TYPE_DOUBLE:
284 case ATOMIC_TYPE_LONG_DOUBLE:
287 case ATOMIC_TYPE_VOID:
290 case ATOMIC_TYPE_INVALID:
291 case ATOMIC_TYPE_LAST:
294 panic("Trying to determine size of invalid atomic type");
297 static unsigned get_compound_type_size(compound_type_t *type)
299 ir_type *irtype = get_ir_type((type_t*) type);
300 return get_type_size_bytes(irtype);
303 static unsigned get_array_type_size(array_type_t *type)
305 ir_type *irtype = get_ir_type((type_t*) type);
306 return get_type_size_bytes(irtype);
310 static unsigned get_type_size(type_t *type)
312 type = skip_typeref(type);
316 panic("error type occured");
318 return get_atomic_type_size(&type->atomic);
320 return get_mode_size_bytes(mode_int);
321 case TYPE_COMPOUND_UNION:
322 case TYPE_COMPOUND_STRUCT:
323 return get_compound_type_size(&type->compound);
325 /* just a pointer to the function */
326 return get_mode_size_bytes(mode_P_code);
328 return get_mode_size_bytes(mode_P_data);
330 return get_array_type_size(&type->array);
332 return get_type_size(type->builtin.real_type);
334 panic("type size of bitfield request");
340 panic("Trying to determine size of invalid type");
343 static unsigned count_parameters(const function_type_t *function_type)
347 function_parameter_t *parameter = function_type->parameters;
348 for ( ; parameter != NULL; parameter = parameter->next) {
356 static ir_type *create_atomic_type(const atomic_type_t *type)
358 dbg_info *dbgi = get_dbg_info(&type->type.source_position);
359 ir_mode *mode = get_atomic_mode(type);
360 ident *id = get_mode_ident(mode);
361 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
363 if(type->akind == ATOMIC_TYPE_LONG_DOUBLE
364 || type->akind == ATOMIC_TYPE_DOUBLE) {
365 set_type_alignment_bytes(irtype, 4);
371 static ir_type *create_method_type(const function_type_t *function_type)
373 type_t *return_type = function_type->return_type;
375 ident *id = unique_ident("functiontype");
376 int n_parameters = count_parameters(function_type);
377 int n_results = return_type == type_void ? 0 : 1;
378 dbg_info *dbgi = get_dbg_info(&function_type->type.source_position);
379 ir_type *irtype = new_d_type_method(id, n_parameters, n_results, dbgi);
381 if(return_type != type_void) {
382 ir_type *restype = get_ir_type(return_type);
383 set_method_res_type(irtype, 0, restype);
386 function_parameter_t *parameter = function_type->parameters;
388 for( ; parameter != NULL; parameter = parameter->next) {
389 ir_type *p_irtype = get_ir_type(parameter->type);
390 set_method_param_type(irtype, n, p_irtype);
394 if(function_type->variadic || function_type->unspecified_parameters) {
395 set_method_variadicity(irtype, variadicity_variadic);
401 static ir_type *create_pointer_type(pointer_type_t *type)
403 type_t *points_to = type->points_to;
404 ir_type *ir_points_to;
405 /* Avoid endless recursion if the points_to type contains this poiner type
406 * again (might be a struct). We therefore first create a void* pointer
407 * and then set the real points_to type
409 dbg_info *dbgi = get_dbg_info(&type->type.source_position);
410 ir_type *ir_type = new_d_type_pointer(unique_ident("pointer"),
411 ir_type_void, mode_P_data, dbgi);
412 type->type.firm_type = ir_type;
414 ir_points_to = get_ir_type(points_to);
415 set_pointer_points_to_type(ir_type, ir_points_to);
420 static ir_type *create_array_type(array_type_t *type)
422 type_t *element_type = type->element_type;
423 ir_type *ir_element_type = get_ir_type(element_type);
425 ident *id = unique_ident("array");
426 dbg_info *dbgi = get_dbg_info(&type->type.source_position);
427 ir_type *ir_type = new_d_type_array(id, 1, ir_element_type, dbgi);
429 const int align = get_type_alignment_bytes(ir_element_type);
430 set_type_alignment_bytes(ir_type, align);
432 if(type->size_constant) {
433 int n_elements = type->size;
435 set_array_bounds_int(ir_type, 0, 0, n_elements);
437 size_t elemsize = get_type_size_bytes(ir_element_type);
438 if(elemsize % align > 0) {
439 elemsize += align - (elemsize % align);
441 set_type_size_bytes(ir_type, n_elements * elemsize);
443 set_array_lower_bound_int(ir_type, 0, 0);
445 set_type_state(ir_type, layout_fixed);
451 * Return the signed integer type of size bits.
453 * @param size the size
455 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
458 static ir_mode *s_modes[64 + 1] = {NULL, };
462 if (size <= 0 || size > 64)
465 mode = s_modes[size];
469 snprintf(name, sizeof(name), "bf_I%u", size);
470 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
471 size <= 32 ? 32 : size );
472 s_modes[size] = mode;
476 snprintf(name, sizeof(name), "I%u", size);
477 ident *id = new_id_from_str(name);
478 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
479 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
480 set_primitive_base_type(res, base_tp);
486 * Return the unsigned integer type of size bits.
488 * @param size the size
490 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
493 static ir_mode *u_modes[64 + 1] = {NULL, };
497 if (size <= 0 || size > 64)
500 mode = u_modes[size];
504 snprintf(name, sizeof(name), "bf_U%u", size);
505 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
506 size <= 32 ? 32 : size );
507 u_modes[size] = mode;
512 snprintf(name, sizeof(name), "U%u", size);
513 ident *id = new_id_from_str(name);
514 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
515 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
516 set_primitive_base_type(res, base_tp);
521 static ir_type *create_bitfield_type(bitfield_type_t *const type)
523 type_t *base = skip_typeref(type->base);
524 assert(base->kind == TYPE_ATOMIC);
525 ir_type *irbase = get_ir_type(base);
527 unsigned size = fold_constant(type->size);
529 assert(!is_type_float(base));
530 if(is_type_signed(base)) {
531 return get_signed_int_type_for_bit_size(irbase, size);
533 return get_unsigned_int_type_for_bit_size(irbase, size);
537 #define INVALID_TYPE ((ir_type_ptr)-1)
539 static ir_type *create_union_type(compound_type_t *type, ir_type *irtype,
540 size_t *outer_offset, size_t *outer_align);
542 static ir_type *create_struct_type(compound_type_t *type, ir_type *irtype,
543 size_t *outer_offset, size_t *outer_align)
545 declaration_t *declaration = type->declaration;
546 if(declaration->v.irtype != NULL) {
547 return declaration->v.irtype;
550 size_t align_all = 1;
552 size_t bit_offset = 0;
554 symbol_t *symbol = declaration->symbol;
557 id = unique_ident(symbol->string);
559 id = unique_ident("__anonymous_struct");
561 dbg_info *dbgi = get_dbg_info(&type->type.source_position);
563 irtype = new_d_type_struct(id, dbgi);
565 declaration->v.irtype = irtype;
566 type->type.firm_type = irtype;
568 offset = *outer_offset;
569 align_all = *outer_align;
572 declaration_t *entry = declaration->scope.declarations;
573 for( ; entry != NULL; entry = entry->next) {
574 if(entry->namespc != NAMESPACE_NORMAL)
577 symbol_t *symbol = entry->symbol;
578 type_t *entry_type = skip_typeref(entry->type);
579 dbg_info *dbgi = get_dbg_info(&entry->source_position);
582 ident = new_id_from_str(symbol->string);
584 if(entry_type->kind == TYPE_COMPOUND_STRUCT) {
585 create_struct_type(&entry_type->compound, irtype, &offset,
588 } else if(entry_type->kind == TYPE_COMPOUND_UNION) {
589 create_union_type(&entry_type->compound, irtype, &offset,
593 assert(entry_type->kind == TYPE_BITFIELD);
595 ident = unique_ident("anon");
598 ir_type *base_irtype;
599 if(entry_type->kind == TYPE_BITFIELD) {
600 base_irtype = get_ir_type(entry_type->bitfield.base);
602 base_irtype = get_ir_type(entry_type);
605 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
606 size_t misalign = offset % entry_alignment;
608 ir_type *entry_irtype = get_ir_type(entry_type);
609 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
612 size_t bits_remainder;
613 if(entry_type->kind == TYPE_BITFIELD) {
614 size_t size_bits = fold_constant(entry_type->bitfield.size);
615 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
617 if(size_bits > rest_size_bits) {
618 /* start a new bucket */
619 offset += entry_alignment - misalign;
625 /* put into current bucket */
626 base = offset - misalign;
627 bits_remainder = misalign * 8 + bit_offset;
630 offset += size_bits / 8;
631 bit_offset = bit_offset + (size_bits % 8);
633 size_t entry_size = get_type_size_bytes(base_irtype);
634 if(misalign > 0 || bit_offset > 0)
635 offset += entry_alignment - misalign;
639 offset += entry_size;
643 if(entry_alignment > align_all) {
644 if(entry_alignment % align_all != 0) {
645 panic("uneven alignments not supported yet");
647 align_all = entry_alignment;
650 set_entity_offset(entity, base);
651 set_entity_offset_bits_remainder(entity,
652 (unsigned char) bits_remainder);
653 //add_struct_member(irtype, entity);
654 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
655 assert(entry->v.entity == NULL);
656 entry->v.entity = entity;
659 size_t misalign = offset % align_all;
660 if(misalign > 0 || bit_offset > 0) {
661 offset += align_all - misalign;
664 if(outer_offset != NULL) {
665 *outer_offset = offset;
666 *outer_align = align_all;
668 set_type_alignment_bytes(irtype, align_all);
669 set_type_size_bytes(irtype, offset);
670 set_type_state(irtype, layout_fixed);
676 static ir_type *create_union_type(compound_type_t *type, ir_type *irtype,
677 size_t *outer_offset, size_t *outer_align)
679 declaration_t *declaration = type->declaration;
680 if(declaration->v.irtype != NULL) {
681 return declaration->v.irtype;
684 size_t align_all = 1;
689 symbol_t *symbol = declaration->symbol;
692 id = unique_ident(symbol->string);
694 id = unique_ident("__anonymous_union");
696 dbg_info *dbgi = get_dbg_info(&type->type.source_position);
698 irtype = new_d_type_union(id, dbgi);
700 declaration->v.irtype = irtype;
701 type->type.firm_type = irtype;
703 offset = *outer_offset;
704 align_all = *outer_align;
707 type->type.firm_type = irtype;
709 declaration_t *entry = declaration->scope.declarations;
710 for( ; entry != NULL; entry = entry->next) {
711 if(entry->namespc != NAMESPACE_NORMAL)
714 symbol_t *symbol = entry->symbol;
715 type_t *entry_type = skip_typeref(entry->type);
716 ir_type *entry_ir_type = get_ir_type(entry_type);
720 ident = new_id_from_str(entry->symbol->string);
722 size_t offs = offset;
723 if(entry_type->kind == TYPE_COMPOUND_STRUCT) {
724 create_struct_type(&entry_type->compound, irtype, &offs,
727 } else if(entry_type->kind == TYPE_COMPOUND_UNION) {
728 create_union_type(&entry_type->compound, irtype, &offs,
732 panic("anonymous union member must be struct or union");
734 size_t entry_size = offs - offset;
735 if(entry_size > size) {
738 ident = unique_ident("anon");
741 size_t entry_size = get_type_size_bytes(entry_ir_type);
742 size_t entry_alignment = get_type_alignment_bytes(entry_ir_type);
744 dbg_info *const dbgi = get_dbg_info(&entry->source_position);
745 ir_entity *const entity = new_d_entity(irtype, ident, entry_ir_type,
747 //add_union_member(irtype, entity);
748 set_entity_offset(entity, 0);
749 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
750 assert(entry->v.entity == NULL);
751 entry->v.entity = entity;
753 if(entry_size > size) {
756 if(entry_alignment > align_all) {
757 if(entry_alignment % align_all != 0) {
758 panic("Uneven alignments not supported yet");
760 align_all = entry_alignment;
764 if(outer_offset != NULL) {
765 assert(*outer_offset == offset);
767 size_t misalign = offset % align_all;
769 size += align_all - misalign;
770 *outer_offset += size;
772 if(align_all > *outer_align) {
773 if(align_all % *outer_align != 0) {
774 panic("uneven alignments not supported yet");
776 *outer_align = align_all;
779 set_type_alignment_bytes(irtype, align_all);
780 set_type_size_bytes(irtype, size);
781 set_type_state(irtype, layout_fixed);
782 declaration->v.irtype = irtype;
788 static ir_node *expression_to_firm(const expression_t *expression);
789 static inline ir_mode *get_ir_mode(type_t *type);
791 static ir_type *create_enum_type(enum_type_t *const type)
793 type->type.firm_type = ir_type_int;
795 ir_mode *const mode = mode_int;
796 tarval *const one = get_mode_one(mode);
797 tarval * tv_next = get_tarval_null(mode);
799 declaration_t *declaration = type->declaration->next;
800 for (; declaration != NULL; declaration = declaration->next) {
801 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
804 declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
806 expression_t *const init = declaration->init.enum_value;
808 ir_node *const cnst = expression_to_firm(init);
809 if (!is_Const(cnst)) {
810 panic("couldn't fold constant");
812 tv_next = get_Const_tarval(cnst);
814 declaration->v.enum_val = tv_next;
815 tv_next = tarval_add(tv_next, one);
821 static ir_type *get_ir_type(type_t *type)
823 assert(type != NULL);
825 type = skip_typeref(type);
827 if(type->base.firm_type != NULL) {
828 assert(type->base.firm_type != INVALID_TYPE);
829 return type->base.firm_type;
832 ir_type *firm_type = NULL;
835 panic("error type occured");
837 firm_type = create_atomic_type(&type->atomic);
840 firm_type = create_method_type(&type->function);
843 firm_type = create_pointer_type(&type->pointer);
846 firm_type = create_array_type(&type->array);
848 case TYPE_COMPOUND_STRUCT:
849 firm_type = create_struct_type(&type->compound, NULL, NULL, NULL);
851 case TYPE_COMPOUND_UNION:
852 firm_type = create_union_type(&type->compound, NULL, NULL, NULL);
855 firm_type = create_enum_type(&type->enumt);
858 firm_type = get_ir_type(type->builtin.real_type);
861 firm_type = create_bitfield_type(&type->bitfield);
869 if(firm_type == NULL)
870 panic("unknown type found");
872 type->base.firm_type = firm_type;
876 static inline ir_mode *get_ir_mode(type_t *type)
878 ir_type *irtype = get_ir_type(type);
880 /* firm doesn't report a mode for arrays somehow... */
881 if(is_Array_type(irtype)) {
885 ir_mode *mode = get_type_mode(irtype);
886 assert(mode != NULL);
890 static ident *predef_idents[rts_max];
892 /** Names of the runtime functions. */
893 static const struct {
894 int id; /**< the rts id */
895 int n_res; /**< number of return values */
896 const char *name; /**< the name of the rts function */
897 int n_params; /**< number of parameters */
898 unsigned flags; /**< language flags */
900 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
901 { rts_abort, 0, "abort", 0, _C89 },
902 { rts_abs, 1, "abs", 1, _C89 },
903 { rts_labs, 1, "labs", 1, _C89 },
904 { rts_llabs, 1, "llabs", 1, _C99 },
905 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
907 { rts_fabs, 1, "fabs", 1, _C89 },
908 { rts_sqrt, 1, "sqrt", 1, _C89 },
909 { rts_cbrt, 1, "cbrt", 1, _C99 },
910 { rts_exp, 1, "exp", 1, _C89 },
911 { rts_exp2, 1, "exp2", 1, _C89 },
912 { rts_exp10, 1, "exp10", 1, _GNUC },
913 { rts_log, 1, "log", 1, _C89 },
914 { rts_log2, 1, "log2", 1, _C89 },
915 { rts_log10, 1, "log10", 1, _C89 },
916 { rts_pow, 1, "pow", 2, _C89 },
917 { rts_sin, 1, "sin", 1, _C89 },
918 { rts_cos, 1, "cos", 1, _C89 },
919 { rts_tan, 1, "tan", 1, _C89 },
920 { rts_asin, 1, "asin", 1, _C89 },
921 { rts_acos, 1, "acos", 1, _C89 },
922 { rts_atan, 1, "atan", 1, _C89 },
923 { rts_sinh, 1, "sinh", 1, _C89 },
924 { rts_cosh, 1, "cosh", 1, _C89 },
925 { rts_tanh, 1, "tanh", 1, _C89 },
927 { rts_fabsf, 1, "fabsf", 1, _C99 },
928 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
929 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
930 { rts_expf, 1, "expf", 1, _C99 },
931 { rts_exp2f, 1, "exp2f", 1, _C99 },
932 { rts_exp10f, 1, "exp10f", 1, _GNUC },
933 { rts_logf, 1, "logf", 1, _C99 },
934 { rts_log2f, 1, "log2f", 1, _C99 },
935 { rts_log10f, 1, "log10f", 1, _C99 },
936 { rts_powf, 1, "powf", 2, _C99 },
937 { rts_sinf, 1, "sinf", 1, _C99 },
938 { rts_cosf, 1, "cosf", 1, _C99 },
939 { rts_tanf, 1, "tanf", 1, _C99 },
940 { rts_asinf, 1, "asinf", 1, _C99 },
941 { rts_acosf, 1, "acosf", 1, _C99 },
942 { rts_atanf, 1, "atanf", 1, _C99 },
943 { rts_sinhf, 1, "sinhf", 1, _C99 },
944 { rts_coshf, 1, "coshf", 1, _C99 },
945 { rts_tanhf, 1, "tanhf", 1, _C99 },
947 { rts_fabsl, 1, "fabsl", 1, _C99 },
948 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
949 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
950 { rts_expl, 1, "expl", 1, _C99 },
951 { rts_exp2l, 1, "exp2l", 1, _C99 },
952 { rts_exp10l, 1, "exp10l", 1, _GNUC },
953 { rts_logl, 1, "logl", 1, _C99 },
954 { rts_log2l, 1, "log2l", 1, _C99 },
955 { rts_log10l, 1, "log10l", 1, _C99 },
956 { rts_powl, 1, "powl", 2, _C99 },
957 { rts_sinl, 1, "sinl", 1, _C99 },
958 { rts_cosl, 1, "cosl", 1, _C99 },
959 { rts_tanl, 1, "tanl", 1, _C99 },
960 { rts_asinl, 1, "asinl", 1, _C99 },
961 { rts_acosl, 1, "acosl", 1, _C99 },
962 { rts_atanl, 1, "atanl", 1, _C99 },
963 { rts_sinhl, 1, "sinhl", 1, _C99 },
964 { rts_coshl, 1, "coshl", 1, _C99 },
965 { rts_tanhl, 1, "tanhl", 1, _C99 },
967 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
968 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
969 { rts_strcmp, 1, "strcmp", 2, _C89 },
970 { rts_strncmp, 1, "strncmp", 3, _C89 }
973 static ir_entity* get_function_entity(declaration_t *declaration)
975 if(declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
976 return declaration->v.entity;
977 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
979 symbol_t *symbol = declaration->symbol;
980 ident *id = new_id_from_str(symbol->string);
982 ir_type *global_type = get_glob_type();
983 ir_type *ir_type_method = get_ir_type(declaration->type);
984 assert(is_Method_type(ir_type_method));
986 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
987 ir_entity *const entity = new_d_entity(global_type, id, ir_type_method, dbgi);
988 set_entity_ld_ident(entity, id);
989 if(declaration->storage_class == STORAGE_CLASS_STATIC
990 || declaration->is_inline) {
991 set_entity_visibility(entity, visibility_local);
992 } else if(declaration->init.statement != NULL) {
993 set_entity_visibility(entity, visibility_external_visible);
995 set_entity_visibility(entity, visibility_external_allocated);
997 /* We should check for file scope here, but as long as we compile C only
998 this is not needed. */
999 int n_params = get_method_n_params(ir_type_method);
1000 int n_res = get_method_n_ress(ir_type_method);
1003 if (n_params == 0 && n_res == 0 && id == predef_idents[rts_abort]) {
1004 /* found abort(), store for later */
1008 if (! firm_opt.freestanding) {
1009 /* check for a known runtime function */
1010 for (i = 0; i < rts_max; ++i) {
1011 /* ignore those rts functions not necessary needed for current mode */
1012 if ((c_mode & rts_data[i].flags) == 0)
1014 if (n_params == rts_data[i].n_params && n_res == rts_data[i].n_res &&
1015 id == predef_idents[rts_data[i].id])
1016 rts_entities[rts_data[i].id] = entity;
1021 set_entity_allocation(entity, allocation_static);
1023 declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
1024 declaration->v.entity = entity;
1029 static ir_node *const_to_firm(const const_expression_t *cnst)
1031 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1032 ir_mode *mode = get_ir_mode(cnst->base.type);
1037 if(mode_is_float(mode)) {
1038 tv = new_tarval_from_double(cnst->v.float_value, mode);
1040 if(mode_is_signed(mode)) {
1041 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1043 len = snprintf(buf, sizeof(buf), "%llu",
1044 (unsigned long long) cnst->v.int_value);
1046 tv = new_tarval_from_str(buf, len, mode);
1049 return new_d_Const(dbgi, mode, tv);
1052 static ir_node *char_const_to_firm(const const_expression_t *cnst)
1054 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1055 ir_mode *mode = get_ir_mode(cnst->base.type);
1057 long long int v = 0;
1058 for (size_t i = 0; i < cnst->v.chars.size; ++i) {
1059 v = (v << 8) | ((unsigned char)cnst->v.chars.begin[i]);
1062 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1063 tarval *tv = new_tarval_from_str(buf, len, mode);
1065 return new_d_Const(dbgi, mode, tv);
1068 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1071 assert(entity != NULL);
1072 union symconst_symbol sym;
1073 sym.entity_p = entity;
1074 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1077 static ir_node *string_to_firm(const source_position_t *const src_pos,
1078 const char *const id_prefix,
1079 const string_t *const value)
1081 ir_type *const global_type = get_glob_type();
1082 dbg_info *const dbgi = get_dbg_info(src_pos);
1083 ir_type *const type = new_d_type_array(unique_ident("strtype"), 1,
1084 ir_type_const_char, dbgi);
1086 ident *const id = unique_ident(id_prefix);
1087 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1088 set_entity_ld_ident(entity, id);
1089 set_entity_variability(entity, variability_constant);
1090 set_entity_allocation(entity, allocation_static);
1092 ir_type *const elem_type = ir_type_const_char;
1093 ir_mode *const mode = get_type_mode(elem_type);
1095 const char* const string = value->begin;
1096 const size_t slen = value->size;
1098 set_array_lower_bound_int(type, 0, 0);
1099 set_array_upper_bound_int(type, 0, slen);
1100 set_type_size_bytes(type, slen);
1101 set_type_state(type, layout_fixed);
1103 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1104 for(size_t i = 0; i < slen; ++i) {
1105 tvs[i] = new_tarval_from_long(string[i], mode);
1108 set_array_entity_values(entity, tvs, slen);
1111 return create_symconst(dbgi, mode_P_data, entity);
1114 static ir_node *string_literal_to_firm(
1115 const string_literal_expression_t* literal)
1117 return string_to_firm(&literal->base.source_position, "Lstr",
1121 static ir_node *wide_string_literal_to_firm(
1122 const wide_string_literal_expression_t* const literal)
1124 ir_type *const global_type = get_glob_type();
1125 ir_type *const elem_type = ir_type_wchar_t;
1126 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1127 ir_type *const type = new_d_type_array(unique_ident("strtype"), 1,
1130 ident *const id = unique_ident("Lstr");
1131 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1132 set_entity_ld_ident(entity, id);
1133 set_entity_variability(entity, variability_constant);
1134 set_entity_allocation(entity, allocation_static);
1136 ir_mode *const mode = get_type_mode(elem_type);
1138 const wchar_rep_t *const string = literal->value.begin;
1139 const size_t slen = literal->value.size;
1141 set_array_lower_bound_int(type, 0, 0);
1142 set_array_upper_bound_int(type, 0, slen);
1143 set_type_size_bytes(type, slen);
1144 set_type_state(type, layout_fixed);
1146 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1147 for(size_t i = 0; i < slen; ++i) {
1148 tvs[i] = new_tarval_from_long(string[i], mode);
1151 set_array_entity_values(entity, tvs, slen);
1154 return create_symconst(dbgi, mode_P_data, entity);
1157 static ir_node *deref_address(ir_type *const irtype, ir_node *const addr,
1158 dbg_info *const dbgi)
1160 if (is_compound_type(irtype) ||
1161 is_Method_type(irtype) ||
1162 is_Array_type(irtype)) {
1166 ir_mode *const mode = get_type_mode(irtype);
1167 ir_node *const memory = get_store();
1168 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1169 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1170 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1171 set_store(load_mem);
1175 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1177 ir_mode *mode = get_irn_mode(node);
1179 if(!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1181 if(!mode_is_float(mode))
1184 /* check if there is already a Conv */
1185 if (get_irn_op(node) == op_Conv) {
1186 /* convert it into a strict Conv */
1187 set_Conv_strict(node, 1);
1191 /* otherwise create a new one */
1192 return new_d_strictConv(dbgi, node, mode);
1195 static ir_node *get_global_var_address(dbg_info *const dbgi,
1196 const declaration_t *const decl)
1198 assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1200 ir_entity *const entity = decl->v.entity;
1201 switch ((storage_class_tag_t)decl->storage_class) {
1202 case STORAGE_CLASS_THREAD:
1203 case STORAGE_CLASS_THREAD_EXTERN:
1204 case STORAGE_CLASS_THREAD_STATIC: {
1205 ir_node *const no_mem = new_NoMem();
1206 ir_node *const tls = get_irg_tls(current_ir_graph);
1207 return new_d_simpleSel(dbgi, no_mem, tls, entity);
1211 return create_symconst(dbgi, mode_P_data, entity);
1215 /* Returns the correct base address depending on whether it is a parameter or a
1216 * normal local variable */
1217 static ir_node *get_local_frame(ir_entity *const ent)
1219 ir_graph *const irg = current_ir_graph;
1220 const ir_type *const owner = get_entity_owner(ent);
1221 if (owner == get_irg_frame_type(irg)) {
1222 return get_irg_frame(irg);
1224 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1225 return get_irg_value_param_base(irg);
1229 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1231 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1232 declaration_t *declaration = ref->declaration;
1233 type_t *type = skip_typeref(declaration->type);
1235 switch((declaration_kind_t) declaration->declaration_kind) {
1236 case DECLARATION_KIND_UNKNOWN:
1237 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) {
1243 case DECLARATION_KIND_ENUM_ENTRY: {
1244 ir_mode *const mode = get_ir_mode(type);
1245 return new_Const(mode, declaration->v.enum_val);
1248 case DECLARATION_KIND_LOCAL_VARIABLE: {
1249 ir_mode *const mode = get_ir_mode(type);
1250 return get_value(declaration->v.value_number, mode);
1252 case DECLARATION_KIND_FUNCTION: {
1253 ir_mode *const mode = get_ir_mode(type);
1254 return create_symconst(dbgi, mode, declaration->v.entity);
1256 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1257 ir_node *const addr = get_global_var_address(dbgi, declaration);
1258 ir_type *const irtype = get_entity_type(declaration->v.entity);
1259 return deref_address(irtype, addr, dbgi);
1262 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1263 ir_entity *entity = declaration->v.entity;
1264 ir_node *frame = get_local_frame(entity);
1265 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1266 ir_type *irtype = get_entity_type(entity);
1267 return deref_address(irtype, sel, dbgi);
1270 case DECLARATION_KIND_COMPOUND_MEMBER:
1271 case DECLARATION_KIND_LABEL_BLOCK:
1272 panic("not implemented reference type");
1275 panic("reference to declaration with unknown type found");
1278 static ir_node *reference_addr(const reference_expression_t *ref)
1280 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1281 declaration_t *declaration = ref->declaration;
1283 switch((declaration_kind_t) declaration->declaration_kind) {
1284 case DECLARATION_KIND_UNKNOWN:
1286 case DECLARATION_KIND_LOCAL_VARIABLE:
1287 panic("local variable without entity has no address");
1288 case DECLARATION_KIND_FUNCTION: {
1289 type_t *const type = skip_typeref(ref->base.type);
1290 ir_mode *const mode = get_ir_mode(type);
1291 return create_symconst(dbgi, mode, declaration->v.entity);
1293 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1294 ir_node *const addr = get_global_var_address(dbgi, declaration);
1297 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1298 ir_entity *entity = declaration->v.entity;
1299 ir_node *frame = get_local_frame(entity);
1300 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1305 case DECLARATION_KIND_ENUM_ENTRY:
1306 panic("trying to reference enum entry");
1308 case DECLARATION_KIND_COMPOUND_MEMBER:
1309 case DECLARATION_KIND_LABEL_BLOCK:
1310 panic("not implemented reference type");
1313 panic("reference to declaration with unknown type found");
1316 static ir_node *process_builtin_call(const call_expression_t *call)
1318 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1320 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1321 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1323 type_t *type = skip_typeref(builtin->base.type);
1324 assert(is_type_pointer(type));
1326 type_t *function_type = skip_typeref(type->pointer.points_to);
1327 symbol_t *symbol = builtin->symbol;
1329 switch(symbol->ID) {
1330 case T___builtin_alloca: {
1331 if(call->arguments == NULL || call->arguments->next != NULL) {
1332 panic("invalid number of parameters on __builtin_alloca");
1334 expression_t *argument = call->arguments->expression;
1335 ir_node *size = expression_to_firm(argument);
1337 ir_node *store = get_store();
1338 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1340 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1342 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1346 case T___builtin_nan:
1347 case T___builtin_nanf:
1348 case T___builtin_nand: {
1349 /* Ignore string for now... */
1350 assert(is_type_function(function_type));
1351 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1352 tarval *tv = get_mode_NAN(mode);
1353 ir_node *res = new_d_Const(dbgi, mode, tv);
1356 case T___builtin_va_end:
1359 panic("Unsupported builtin found\n");
1363 static ir_node *call_expression_to_firm(const call_expression_t *call)
1365 assert(get_cur_block() != NULL);
1367 expression_t *function = call->function;
1368 if(function->kind == EXPR_BUILTIN_SYMBOL) {
1369 return process_builtin_call(call);
1371 ir_node *callee = expression_to_firm(function);
1373 type_t *type = skip_typeref(function->base.type);
1374 assert(is_type_pointer(type));
1375 pointer_type_t *pointer_type = &type->pointer;
1376 type_t *points_to = skip_typeref(pointer_type->points_to);
1377 assert(is_type_function(points_to));
1378 function_type_t *function_type = &points_to->function;
1380 int n_parameters = 0;
1381 call_argument_t *argument = call->arguments;
1382 for( ; argument != NULL; argument = argument->next) {
1386 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1388 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1389 ir_type *new_method_type = NULL;
1390 if(function_type->variadic || function_type->unspecified_parameters) {
1391 /* we need to construct a new method type matching the call
1393 int n_res = get_method_n_ress(ir_method_type);
1394 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1395 new_method_type = new_d_type_method(unique_ident("calltype"),
1396 n_parameters, n_res, dbgi);
1397 set_method_calling_convention(new_method_type,
1398 get_method_calling_convention(ir_method_type));
1399 set_method_additional_properties(new_method_type,
1400 get_method_additional_properties(ir_method_type));
1402 for(int i = 0; i < n_res; ++i) {
1403 set_method_res_type(new_method_type, i,
1404 get_method_res_type(ir_method_type, i));
1407 ir_node *in[n_parameters];
1409 argument = call->arguments;
1411 for( ; argument != NULL; argument = argument->next) {
1412 expression_t *expression = argument->expression;
1413 ir_node *arg_node = expression_to_firm(expression);
1415 arg_node = do_strict_conv(dbgi, arg_node);
1418 if(new_method_type != NULL) {
1419 ir_type *irtype = get_ir_type(expression->base.type);
1420 set_method_param_type(new_method_type, n, irtype);
1425 assert(n == n_parameters);
1427 if(new_method_type != NULL)
1428 ir_method_type = new_method_type;
1430 ir_node *store = get_store();
1431 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1433 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1436 type_t *return_type = skip_typeref(function_type->return_type);
1437 ir_node *result = NULL;
1439 if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1441 if(is_type_scalar(return_type)) {
1442 mode = get_ir_mode(return_type);
1446 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1447 result = new_d_Proj(dbgi, resproj, mode, 0);
1453 static void statement_to_firm(statement_t *statement);
1454 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1456 static ir_node *expression_to_addr(const expression_t *expression);
1457 static void create_condition_evaluation(const expression_t *expression,
1458 ir_node *true_block,
1459 ir_node *false_block);
1461 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1464 value = do_strict_conv(dbgi, value);
1466 ir_node *memory = get_store();
1468 if(is_type_scalar(type)) {
1469 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1470 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1471 set_store(store_mem);
1473 ir_type *irtype = get_ir_type(type);
1474 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1475 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1476 set_store(copyb_mem);
1480 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1482 tarval *all_one = get_mode_all_one(mode);
1483 int mode_size = get_mode_size_bits(mode);
1485 assert(offset >= 0 && size >= 0);
1486 assert(offset + size <= mode_size);
1487 if(size == mode_size) {
1491 long shiftr = get_mode_size_bits(mode) - size;
1492 long shiftl = offset;
1493 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1494 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1495 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1496 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1501 static void bitfield_store_to_firm(const unary_expression_t *expression,
1504 expression_t *select = expression->value;
1505 assert(select->kind == EXPR_SELECT);
1506 type_t *type = select->base.type;
1507 assert(type->kind == TYPE_BITFIELD);
1508 ir_mode *mode = get_ir_mode(type->bitfield.base);
1509 ir_node *addr = expression_to_addr(select);
1511 assert(get_irn_mode(value) == mode);
1513 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1515 /* kill upper bits of value and shift to right position */
1516 ir_entity *entity = select->select.compound_entry->v.entity;
1517 int bitoffset = get_entity_offset_bits_remainder(entity);
1518 ir_type *entity_type = get_entity_type(entity);
1519 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1521 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1522 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1523 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1524 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1525 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1526 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1528 /* load current value */
1529 ir_node *mem = get_store();
1530 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1531 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1532 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1533 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1534 tarval *inv_mask = tarval_not(shift_mask);
1535 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1536 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1538 /* construct new value and store */
1539 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1540 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1541 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1542 set_store(store_mem);
1545 static void set_value_for_expression(const expression_t *expression,
1548 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1549 value = do_strict_conv(dbgi, value);
1551 if(expression->kind == EXPR_REFERENCE) {
1552 const reference_expression_t *ref = &expression->reference;
1554 declaration_t *declaration = ref->declaration;
1555 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1556 if(declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1557 set_value(declaration->v.value_number, value);
1562 if(expression->kind == EXPR_UNARY_BITFIELD_EXTRACT) {
1563 bitfield_store_to_firm(&expression->unary, value);
1567 ir_node *addr = expression_to_addr(expression);
1568 type_t *type = skip_typeref(expression->base.type);
1569 assign_value(dbgi, addr, type, value);
1572 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1574 ir_mode *value_mode = get_irn_mode(value);
1576 if (value_mode == dest_mode || is_Bad(value))
1579 if(dest_mode == mode_b) {
1580 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1581 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1582 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1586 return new_d_Conv(dbgi, value, dest_mode);
1589 static ir_node *create_incdec(const unary_expression_t *expression)
1591 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1592 type_t *type = skip_typeref(expression->base.type);
1593 ir_mode *mode = get_ir_mode(type);
1594 expression_t *value = expression->value;
1596 ir_node *value_node = expression_to_firm(value);
1599 if(is_type_pointer(type)) {
1600 pointer_type_t *pointer_type = &type->pointer;
1601 unsigned elem_size = get_type_size(pointer_type->points_to);
1602 offset = new_Const_long(mode_int, elem_size);
1604 assert(is_type_arithmetic(type));
1605 offset = new_Const(mode, get_mode_one(mode));
1608 switch(expression->base.kind) {
1609 case EXPR_UNARY_POSTFIX_INCREMENT: {
1610 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1611 set_value_for_expression(value, new_value);
1614 case EXPR_UNARY_POSTFIX_DECREMENT: {
1615 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1616 set_value_for_expression(value, new_value);
1619 case EXPR_UNARY_PREFIX_INCREMENT: {
1620 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1621 set_value_for_expression(value, new_value);
1624 case EXPR_UNARY_PREFIX_DECREMENT: {
1625 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1626 set_value_for_expression(value, new_value);
1630 panic("no incdec expr in create_incdec");
1635 static bool is_local_variable(expression_t *expression)
1637 if (expression->kind != EXPR_REFERENCE)
1639 reference_expression_t *ref_expr = &expression->reference;
1640 declaration_t *declaration = ref_expr->declaration;
1641 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
1644 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
1647 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1648 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1649 case EXPR_BINARY_NOTEQUAL:
1650 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
1651 case EXPR_BINARY_ISLESS:
1652 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
1653 case EXPR_BINARY_ISLESSEQUAL:
1654 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
1655 case EXPR_BINARY_ISGREATER:
1656 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
1657 case EXPR_BINARY_ISGREATEREQUAL:
1658 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
1659 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
1664 panic("trying to get pn_Cmp from non-comparison binexpr type");
1668 * Handle the assume optimizer hint: check if a Confirm
1669 * node can be created.
1671 * @param dbi debug info
1672 * @param expr the IL assume expression
1674 * we support here only some simple cases:
1679 static ir_node *handle_assume_compare(dbg_info *dbi,
1680 const binary_expression_t *expression)
1682 expression_t *op1 = expression->left;
1683 expression_t *op2 = expression->right;
1684 declaration_t *var2, *var = NULL;
1685 ir_node *res = NULL;
1688 cmp_val = get_pnc(expression->base.kind, op1->base.type);
1690 if (is_local_variable(op1) && is_local_variable(op2)) {
1691 var = op1->reference.declaration;
1692 var2 = op2->reference.declaration;
1694 type_t *const type = skip_typeref(var->type);
1695 ir_mode *const mode = get_ir_mode(type);
1697 ir_node *const irn1 = get_value(var->v.value_number, mode);
1698 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1700 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1701 set_value(var2->v.value_number, res);
1703 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
1704 set_value(var->v.value_number, res);
1710 if (is_local_variable(op1) && is_constant_expression(op2)) {
1711 var = op1->reference.declaration;
1713 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
1714 cmp_val = get_inversed_pnc(cmp_val);
1715 var = op2->reference.declaration;
1720 type_t *const type = skip_typeref(var->type);
1721 ir_mode *const mode = get_ir_mode(type);
1723 res = get_value(var->v.value_number, mode);
1724 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
1725 set_value(var->v.value_number, res);
1731 * Handle the assume optimizer hint.
1733 * @param dbi debug info
1734 * @param expr the IL assume expression
1736 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
1737 switch(expression->kind) {
1738 case EXPR_BINARY_EQUAL:
1739 case EXPR_BINARY_NOTEQUAL:
1740 case EXPR_BINARY_LESS:
1741 case EXPR_BINARY_LESSEQUAL:
1742 case EXPR_BINARY_GREATER:
1743 case EXPR_BINARY_GREATEREQUAL:
1744 return handle_assume_compare(dbi, &expression->binary);
1750 static ir_node *bitfield_extract_to_firm(const unary_expression_t *expression)
1752 expression_t *select = expression->value;
1753 assert(select->kind == EXPR_SELECT);
1755 type_t *type = select->base.type;
1756 assert(type->kind == TYPE_BITFIELD);
1757 ir_mode *mode = get_ir_mode(type->bitfield.base);
1758 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1759 ir_node *addr = expression_to_addr(select);
1760 ir_node *mem = get_store();
1761 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1762 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1763 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1765 load_res = create_conv(dbgi, load_res, mode_int);
1767 set_store(load_mem);
1769 /* kill upper bits */
1770 ir_entity *entity = select->select.compound_entry->v.entity;
1771 int bitoffset = get_entity_offset_bits_remainder(entity);
1772 ir_type *entity_type = get_entity_type(entity);
1773 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1774 long shift_bitsl = machine_size - bitoffset - bitsize;
1775 assert(shift_bitsl >= 0);
1776 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1777 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1778 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1780 long shift_bitsr = bitoffset + shift_bitsl;
1781 assert(shift_bitsr <= (long) machine_size);
1782 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1783 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1785 if(mode_is_signed(mode)) {
1786 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1788 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1791 return create_conv(dbgi, shiftr, mode);
1794 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
1796 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1797 type_t *type = skip_typeref(expression->base.type);
1799 if(expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
1800 return expression_to_addr(expression->value);
1802 const expression_t *value = expression->value;
1804 switch(expression->base.kind) {
1805 case EXPR_UNARY_NEGATE: {
1806 ir_node *value_node = expression_to_firm(value);
1807 ir_mode *mode = get_ir_mode(type);
1808 return new_d_Minus(dbgi, value_node, mode);
1810 case EXPR_UNARY_PLUS:
1811 return expression_to_firm(value);
1812 case EXPR_UNARY_BITWISE_NEGATE: {
1813 ir_node *value_node = expression_to_firm(value);
1814 ir_mode *mode = get_ir_mode(type);
1815 return new_d_Not(dbgi, value_node, mode);
1817 case EXPR_UNARY_NOT: {
1818 ir_node *value_node = expression_to_firm(value);
1819 ir_mode *mode = get_ir_mode(type);
1820 if(get_irn_mode(value_node) != mode_b) {
1821 value_node = create_conv(dbgi, value_node, mode_b);
1823 value_node = new_d_Not(dbgi, value_node, mode_b);
1824 if(mode != mode_b) {
1825 value_node = create_conv(dbgi, value_node, mode);
1829 case EXPR_UNARY_DEREFERENCE: {
1830 ir_node *value_node = expression_to_firm(value);
1831 type_t *value_type = skip_typeref(value->base.type);
1832 ir_type *irtype = get_ir_type(value_type);
1833 assert(is_Pointer_type(irtype));
1834 ir_type *points_to = get_pointer_points_to_type(irtype);
1835 return deref_address(points_to, value_node, dbgi);
1837 case EXPR_UNARY_POSTFIX_INCREMENT:
1838 case EXPR_UNARY_POSTFIX_DECREMENT:
1839 case EXPR_UNARY_PREFIX_INCREMENT:
1840 case EXPR_UNARY_PREFIX_DECREMENT:
1841 return create_incdec(expression);
1842 case EXPR_UNARY_CAST: {
1843 ir_node *value_node = expression_to_firm(value);
1844 if(is_type_scalar(type)) {
1845 ir_mode *mode = get_ir_mode(type);
1846 ir_node *node = create_conv(dbgi, value_node, mode);
1847 node = do_strict_conv(dbgi, node);
1853 case EXPR_UNARY_CAST_IMPLICIT: {
1854 ir_node *value_node = expression_to_firm(value);
1855 if(is_type_scalar(type)) {
1856 ir_mode *mode = get_ir_mode(type);
1857 return create_conv(dbgi, value_node, mode);
1862 case EXPR_UNARY_ASSUME:
1863 if(firm_opt.confirm)
1864 return handle_assume(dbgi, value);
1867 case EXPR_UNARY_BITFIELD_EXTRACT:
1868 return bitfield_extract_to_firm(expression);
1873 panic("invalid UNEXPR type found");
1876 static ir_node *create_lazy_op(const binary_expression_t *expression)
1878 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1879 type_t *type = expression->base.type;
1880 ir_mode *mode = get_ir_mode(type);
1882 if(is_constant_expression(expression->left)) {
1883 long val = fold_constant(expression->left);
1884 expression_kind_t ekind = expression->base.kind;
1885 if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
1886 || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
1887 return expression_to_firm(expression->right);
1889 assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
1890 || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
1891 return new_Const(mode, get_mode_one(mode));
1895 ir_node *cur_block = get_cur_block();
1897 ir_node *one_block = new_immBlock();
1898 ir_node *one = new_Const(mode, get_mode_one(mode));
1899 ir_node *jmp_one = new_d_Jmp(dbgi);
1901 ir_node *zero_block = new_immBlock();
1902 ir_node *zero = new_Const(mode, get_mode_null(mode));
1903 ir_node *jmp_zero = new_d_Jmp(dbgi);
1905 set_cur_block(cur_block);
1906 create_condition_evaluation((const expression_t*) expression,
1907 one_block, zero_block);
1908 mature_immBlock(one_block);
1909 mature_immBlock(zero_block);
1911 ir_node *common_block = new_immBlock();
1912 add_immBlock_pred(common_block, jmp_one);
1913 add_immBlock_pred(common_block, jmp_zero);
1914 mature_immBlock(common_block);
1916 ir_node *in[2] = { one, zero };
1917 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1922 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
1923 ir_node *right, ir_mode *mode);
1925 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
1926 create_arithmetic_func func)
1928 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1929 ir_node *left = expression_to_firm(expression->left);
1930 ir_node *right = expression_to_firm(expression->right);
1931 type_t *type = expression->right->base.type;
1932 /* be careful with the modes, because in arithmetic assign nodes only
1933 * the right operand has the mode of the arithmetic already */
1934 ir_mode *mode = get_ir_mode(type);
1935 left = create_conv(dbgi, left, mode);
1936 ir_node *res = func(dbgi, left, right, mode);
1941 static ir_node *pointer_arithmetic(ir_node *const pointer,
1944 dbg_info *const dbgi,
1945 const create_arithmetic_func func)
1947 pointer_type_t *const pointer_type = &type->pointer;
1948 type_t *const points_to = pointer_type->points_to;
1949 const unsigned elem_size = get_type_size(points_to);
1951 assert(elem_size >= 1);
1952 if (elem_size > 1) {
1953 integer = create_conv(dbgi, integer, mode_int);
1954 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
1955 ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_int);
1959 ir_mode *const mode = get_ir_mode(type);
1960 return func(dbgi, pointer, integer, mode);
1963 static ir_node *create_arithmetic_assign_binop(
1964 const binary_expression_t *expression, create_arithmetic_func func)
1966 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1967 type_t *const type = skip_typeref(expression->base.type);
1970 if (is_type_pointer(type)) {
1971 ir_node *const pointer = expression_to_firm(expression->left);
1972 ir_node * integer = expression_to_firm(expression->right);
1973 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
1975 value = create_arithmetic_binop(expression, func);
1978 ir_mode *const mode = get_ir_mode(type);
1979 value = create_conv(dbgi, value, mode);
1980 set_value_for_expression(expression->left, value);
1985 static ir_node *create_add(const binary_expression_t *expression)
1987 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1988 ir_node *left = expression_to_firm(expression->left);
1989 ir_node *right = expression_to_firm(expression->right);
1990 type_t *type = expression->base.type;
1992 expression_t *expr_left = expression->left;
1993 expression_t *expr_right = expression->right;
1994 type_t *type_left = skip_typeref(expr_left->base.type);
1995 type_t *type_right = skip_typeref(expr_right->base.type);
1997 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1998 ir_mode *const mode = get_ir_mode(type);
1999 return new_d_Add(dbgi, left, right, mode);
2002 if (is_type_pointer(type_left)) {
2003 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
2005 assert(is_type_pointer(type_right));
2006 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
2010 static ir_node *create_sub(const binary_expression_t *expression)
2012 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2013 expression_t *const expr_left = expression->left;
2014 expression_t *const expr_right = expression->right;
2015 ir_node *const left = expression_to_firm(expr_left);
2016 ir_node *const right = expression_to_firm(expr_right);
2017 type_t *const type = expression->base.type;
2018 type_t *const type_left = skip_typeref(expr_left->base.type);
2019 type_t *const type_right = skip_typeref(expr_right->base.type);
2021 if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
2022 ir_mode *const mode = get_ir_mode(type);
2023 return new_d_Sub(dbgi, left, right, mode);
2024 } else if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2025 const pointer_type_t *const ptr_type = &type_left->pointer;
2026 const unsigned elem_size = get_type_size(ptr_type->points_to);
2027 ir_mode *const mode = get_ir_mode(type);
2028 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2029 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
2030 ir_node *const no_mem = new_NoMem();
2031 ir_node *const div = new_d_Div(dbgi, no_mem, sub, cnst, mode,
2032 op_pin_state_floats);
2033 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2036 assert(is_type_pointer(type_left));
2037 return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
2040 static ir_node *create_shift(const binary_expression_t *expression)
2042 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2043 ir_node *left = expression_to_firm(expression->left);
2044 ir_node *right = expression_to_firm(expression->right);
2045 type_t *type = expression->base.type;
2046 ir_mode *mode = get_ir_mode(type);
2048 /* firm always wants the shift count to be unsigned */
2049 right = create_conv(dbgi, right, mode_uint);
2053 switch(expression->base.kind) {
2054 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2055 case EXPR_BINARY_SHIFTLEFT:
2056 res = new_d_Shl(dbgi, left, right, mode);
2058 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2059 case EXPR_BINARY_SHIFTRIGHT: {
2060 expression_t *expr_left = expression->left;
2061 type_t *type_left = skip_typeref(expr_left->base.type);
2063 if(is_type_signed(type_left)) {
2064 res = new_d_Shrs(dbgi, left, right, mode);
2066 res = new_d_Shr(dbgi, left, right, mode);
2071 panic("create shift op called for non-shift op");
2078 static ir_node *create_divmod(const binary_expression_t *expression)
2080 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2081 ir_node *left = expression_to_firm(expression->left);
2082 ir_node *right = expression_to_firm(expression->right);
2083 ir_node *pin = new_Pin(new_NoMem());
2084 /* be careful with the modes, because in arithmetic assign nodes only
2085 * the right operand has the mode of the arithmetic already */
2086 type_t *type = expression->right->base.type;
2087 ir_mode *mode = get_ir_mode(type);
2088 left = create_conv(dbgi, left, mode);
2092 switch (expression->base.kind) {
2093 case EXPR_BINARY_DIV:
2094 case EXPR_BINARY_DIV_ASSIGN:
2095 if(mode_is_float(mode)) {
2096 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2097 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2099 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2100 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2104 case EXPR_BINARY_MOD:
2105 case EXPR_BINARY_MOD_ASSIGN:
2106 assert(!mode_is_float(mode));
2107 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
2108 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2111 default: panic("unexpected binary expression type in create_divmod()");
2117 static ir_node *create_arithmetic_assign_divmod(
2118 const binary_expression_t *expression)
2120 ir_node * value = create_divmod(expression);
2121 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2122 type_t *const type = expression->base.type;
2123 ir_mode *const mode = get_ir_mode(type);
2125 assert(type->kind != TYPE_POINTER);
2127 value = create_conv(dbgi, value, mode);
2128 set_value_for_expression(expression->left, value);
2133 static ir_node *create_arithmetic_assign_shift(
2134 const binary_expression_t *expression)
2136 ir_node * value = create_shift(expression);
2137 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2138 type_t *const type = expression->base.type;
2139 ir_mode *const mode = get_ir_mode(type);
2141 value = create_conv(dbgi, value, mode);
2142 set_value_for_expression(expression->left, value);
2147 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2149 expression_kind_t kind = expression->base.kind;
2152 case EXPR_BINARY_EQUAL:
2153 case EXPR_BINARY_NOTEQUAL:
2154 case EXPR_BINARY_LESS:
2155 case EXPR_BINARY_LESSEQUAL:
2156 case EXPR_BINARY_GREATER:
2157 case EXPR_BINARY_GREATEREQUAL:
2158 case EXPR_BINARY_ISGREATER:
2159 case EXPR_BINARY_ISGREATEREQUAL:
2160 case EXPR_BINARY_ISLESS:
2161 case EXPR_BINARY_ISLESSEQUAL:
2162 case EXPR_BINARY_ISLESSGREATER:
2163 case EXPR_BINARY_ISUNORDERED: {
2164 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2165 ir_node *left = expression_to_firm(expression->left);
2166 ir_node *right = expression_to_firm(expression->right);
2167 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2168 long pnc = get_pnc(kind, expression->left->base.type);
2169 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2172 case EXPR_BINARY_ASSIGN: {
2173 ir_node *right = expression_to_firm(expression->right);
2174 set_value_for_expression(expression->left, right);
2178 case EXPR_BINARY_ADD:
2179 return create_add(expression);
2180 case EXPR_BINARY_SUB:
2181 return create_sub(expression);
2182 case EXPR_BINARY_MUL:
2183 return create_arithmetic_binop(expression, new_d_Mul);
2184 case EXPR_BINARY_BITWISE_AND:
2185 return create_arithmetic_binop(expression, new_d_And);
2186 case EXPR_BINARY_BITWISE_OR:
2187 return create_arithmetic_binop(expression, new_d_Or);
2188 case EXPR_BINARY_BITWISE_XOR:
2189 return create_arithmetic_binop(expression, new_d_Eor);
2190 case EXPR_BINARY_SHIFTLEFT:
2191 case EXPR_BINARY_SHIFTRIGHT:
2192 return create_shift(expression);
2193 case EXPR_BINARY_DIV:
2194 case EXPR_BINARY_MOD:
2195 return create_divmod(expression);
2196 case EXPR_BINARY_LOGICAL_AND:
2197 case EXPR_BINARY_LOGICAL_OR:
2198 return create_lazy_op(expression);
2199 case EXPR_BINARY_COMMA:
2200 expression_to_firm(expression->left);
2201 return expression_to_firm(expression->right);
2202 case EXPR_BINARY_ADD_ASSIGN:
2203 return create_arithmetic_assign_binop(expression, new_d_Add);
2204 case EXPR_BINARY_SUB_ASSIGN:
2205 return create_arithmetic_assign_binop(expression, new_d_Sub);
2206 case EXPR_BINARY_MUL_ASSIGN:
2207 return create_arithmetic_assign_binop(expression, new_d_Mul);
2208 case EXPR_BINARY_MOD_ASSIGN:
2209 case EXPR_BINARY_DIV_ASSIGN:
2210 return create_arithmetic_assign_divmod(expression);
2211 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2212 return create_arithmetic_assign_binop(expression, new_d_And);
2213 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2214 return create_arithmetic_assign_binop(expression, new_d_Or);
2215 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2216 return create_arithmetic_assign_binop(expression, new_d_Eor);
2217 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2218 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2219 return create_arithmetic_assign_shift(expression);
2220 case EXPR_BINARY_BUILTIN_EXPECT:
2221 return expression_to_firm(expression->left);
2223 panic("TODO binexpr type");
2227 static ir_node *array_access_addr(const array_access_expression_t *expression)
2229 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2230 ir_node *base_addr = expression_to_firm(expression->array_ref);
2231 ir_node *offset = expression_to_firm(expression->index);
2232 offset = create_conv(dbgi, offset, mode_uint);
2234 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2235 assert(is_type_pointer(ref_type));
2236 pointer_type_t *pointer_type = &ref_type->pointer;
2238 unsigned elem_size = get_type_size(pointer_type->points_to);
2239 ir_node *elem_size_const = new_Const_long(mode_uint, elem_size);
2240 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2242 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2247 static ir_node *array_access_to_firm(
2248 const array_access_expression_t *expression)
2250 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2251 ir_node *addr = array_access_addr(expression);
2252 type_t *type = revert_automatic_type_conversion(
2253 (const expression_t*) expression);
2254 type = skip_typeref(type);
2255 ir_type *irtype = get_ir_type(type);
2257 return deref_address(irtype, addr, dbgi);
2260 static long get_offsetof_offset(const offsetof_expression_t *expression)
2262 type_t *orig_type = expression->type;
2265 designator_t *designator = expression->designator;
2266 for( ; designator != NULL; designator = designator->next) {
2267 type_t *type = skip_typeref(orig_type);
2268 /* be sure the type is constructed */
2269 (void) get_ir_type(type);
2271 if(designator->symbol != NULL) {
2272 assert(is_type_compound(type));
2273 symbol_t *symbol = designator->symbol;
2275 declaration_t *declaration = type->compound.declaration;
2276 declaration_t *iter = declaration->scope.declarations;
2277 for( ; iter != NULL; iter = iter->next) {
2278 if(iter->symbol == symbol) {
2282 assert(iter != NULL);
2284 assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2285 offset += get_entity_offset(iter->v.entity);
2287 orig_type = iter->type;
2289 expression_t *array_index = designator->array_index;
2290 assert(designator->array_index != NULL);
2291 assert(is_type_array(type));
2292 assert(is_type_valid(array_index->base.type));
2294 long index = fold_constant(array_index);
2295 ir_type *arr_type = get_ir_type(type);
2296 ir_type *elem_type = get_array_element_type(arr_type);
2297 long elem_size = get_type_size_bytes(elem_type);
2299 offset += index * elem_size;
2301 orig_type = type->array.element_type;
2308 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2310 ir_mode *mode = get_ir_mode(expression->base.type);
2311 long offset = get_offsetof_offset(expression);
2312 tarval *tv = new_tarval_from_long(offset, mode);
2313 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2315 return new_d_Const(dbgi, mode, tv);
2318 static ir_node *compound_literal_to_firm(
2319 const compound_literal_expression_t *expression)
2321 /* create an entity on the stack */
2322 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2324 ident *const id = unique_ident("CompLit");
2325 ir_type *const irtype = get_ir_type(expression->type);
2326 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2327 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2328 set_entity_ld_ident(entity, id);
2330 set_entity_variability(entity, variability_uninitialized);
2332 /* create initialisation code TODO */
2337 * Transform a sizeof expression into Firm code.
2339 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2341 type_t *type = expression->type;
2343 type = expression->tp_expression->base.type;
2344 assert(type != NULL);
2347 ir_mode *const mode = get_ir_mode(expression->base.type);
2348 symconst_symbol sym;
2349 sym.type_p = get_ir_type(type);
2350 return new_SymConst(mode, sym, symconst_type_size);
2354 * Transform an alignof expression into Firm code.
2356 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2358 type_t *type = expression->type;
2360 /* beware: if expression is a variable reference, return the
2361 alignment of the variable. */
2362 const expression_t *tp_expression = expression->tp_expression;
2363 const declaration_t *declaration = expr_is_variable(tp_expression);
2364 if (declaration != NULL) {
2365 /* TODO: get the alignment of this variable. */
2367 type = tp_expression->base.type;
2368 assert(type != NULL);
2371 ir_mode *const mode = get_ir_mode(expression->base.type);
2372 symconst_symbol sym;
2373 sym.type_p = get_ir_type(type);
2374 return new_SymConst(mode, sym, symconst_type_align);
2377 static void init_ir_types(void);
2378 long fold_constant(const expression_t *expression)
2382 assert(is_constant_expression(expression));
2384 ir_graph *old_current_ir_graph = current_ir_graph;
2385 if(current_ir_graph == NULL) {
2386 current_ir_graph = get_const_code_irg();
2389 ir_node *cnst = expression_to_firm(expression);
2390 current_ir_graph = old_current_ir_graph;
2392 if(!is_Const(cnst)) {
2393 panic("couldn't fold constant\n");
2396 tarval *tv = get_Const_tarval(cnst);
2397 if(!tarval_is_long(tv)) {
2398 panic("result of constant folding is not integer\n");
2401 return get_tarval_long(tv);
2404 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2406 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2408 /* first try to fold a constant condition */
2409 if(is_constant_expression(expression->condition)) {
2410 long val = fold_constant(expression->condition);
2412 return expression_to_firm(expression->true_expression);
2414 return expression_to_firm(expression->false_expression);
2418 ir_node *cur_block = get_cur_block();
2420 /* create the true block */
2421 ir_node *true_block = new_immBlock();
2423 ir_node *true_val = expression_to_firm(expression->true_expression);
2424 ir_node *true_jmp = new_Jmp();
2426 /* create the false block */
2427 ir_node *false_block = new_immBlock();
2429 ir_node *false_val = expression_to_firm(expression->false_expression);
2430 ir_node *false_jmp = new_Jmp();
2432 /* create the condition evaluation */
2433 set_cur_block(cur_block);
2434 create_condition_evaluation(expression->condition, true_block, false_block);
2435 mature_immBlock(true_block);
2436 mature_immBlock(false_block);
2438 /* create the common block */
2439 ir_node *common_block = new_immBlock();
2440 add_immBlock_pred(common_block, true_jmp);
2441 add_immBlock_pred(common_block, false_jmp);
2442 mature_immBlock(common_block);
2444 /* TODO improve static semantics, so either both or no values are NULL */
2445 if (true_val == NULL || false_val == NULL)
2448 ir_node *in[2] = { true_val, false_val };
2449 ir_mode *mode = get_irn_mode(true_val);
2450 assert(get_irn_mode(false_val) == mode);
2451 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2456 static ir_node *select_addr(const select_expression_t *expression)
2458 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2460 ir_node *compound_addr = expression_to_firm(expression->compound);
2462 declaration_t *entry = expression->compound_entry;
2463 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2464 ir_entity *entity = entry->v.entity;
2466 assert(entity != NULL);
2468 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2473 static ir_node *select_to_firm(const select_expression_t *expression)
2475 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2476 ir_node *addr = select_addr(expression);
2477 type_t *type = revert_automatic_type_conversion(
2478 (const expression_t*) expression);
2479 type = skip_typeref(type);
2480 ir_type *irtype = get_ir_type(type);
2482 return deref_address(irtype, addr, dbgi);
2485 /* Values returned by __builtin_classify_type. */
2486 typedef enum gcc_type_class
2492 enumeral_type_class,
2495 reference_type_class,
2499 function_type_class,
2510 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2512 const type_t *const type = expr->type_expression->base.type;
2518 const atomic_type_t *const atomic_type = &type->atomic;
2519 switch (atomic_type->akind) {
2520 /* should not be reached */
2521 case ATOMIC_TYPE_INVALID:
2525 /* gcc cannot do that */
2526 case ATOMIC_TYPE_VOID:
2527 tc = void_type_class;
2530 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2531 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2532 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2533 case ATOMIC_TYPE_SHORT:
2534 case ATOMIC_TYPE_USHORT:
2535 case ATOMIC_TYPE_INT:
2536 case ATOMIC_TYPE_UINT:
2537 case ATOMIC_TYPE_LONG:
2538 case ATOMIC_TYPE_ULONG:
2539 case ATOMIC_TYPE_LONGLONG:
2540 case ATOMIC_TYPE_ULONGLONG:
2541 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2542 tc = integer_type_class;
2545 case ATOMIC_TYPE_FLOAT:
2546 case ATOMIC_TYPE_DOUBLE:
2547 case ATOMIC_TYPE_LONG_DOUBLE:
2548 tc = real_type_class;
2551 #ifdef PROVIDE_COMPLEX
2552 case ATOMIC_TYPE_FLOAT_COMPLEX:
2553 case ATOMIC_TYPE_DOUBLE_COMPLEX:
2554 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
2555 tc = complex_type_class;
2557 case ATOMIC_TYPE_FLOAT_IMAGINARY:
2558 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
2559 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
2560 tc = complex_type_class;
2565 panic("Unimplemented case in classify_type_to_firm().");
2570 case TYPE_ARRAY: /* gcc handles this as pointer */
2571 case TYPE_FUNCTION: /* gcc handles this as pointer */
2572 case TYPE_POINTER: tc = pointer_type_class; break;
2573 case TYPE_COMPOUND_STRUCT: tc = record_type_class; break;
2574 case TYPE_COMPOUND_UNION: tc = union_type_class; break;
2576 /* gcc handles this as integer */
2577 case TYPE_ENUM: tc = integer_type_class; break;
2580 panic("Unimplemented case in classify_type_to_firm().");
2583 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2584 ir_mode *const mode = mode_int;
2585 tarval *const tv = new_tarval_from_long(tc, mode);
2586 return new_d_Const(dbgi, mode, tv);
2589 static ir_node *function_name_to_firm(
2590 const string_literal_expression_t *const expr)
2592 if (current_function_name == NULL) {
2593 const source_position_t *const src_pos = &expr->base.source_position;
2594 const char *const name = current_function_decl->symbol->string;
2595 const string_t string = { name, strlen(name) + 1 };
2596 current_function_name = string_to_firm(src_pos, "__func__", &string);
2599 return current_function_name;
2602 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2604 statement_t *statement = expr->statement;
2606 assert(statement->kind == STATEMENT_COMPOUND);
2607 return compound_statement_to_firm(&statement->compound);
2610 static ir_node *va_start_expression_to_firm(
2611 const va_start_expression_t *const expr)
2613 ir_type *const method_type = get_ir_type(current_function_decl->type);
2614 int const n = get_method_n_params(method_type) - 1;
2615 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2616 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2617 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2618 ir_node *const no_mem = new_NoMem();
2619 ir_node *const arg_sel =
2620 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2622 size_t const parm_size = get_type_size(expr->parameter->type);
2623 ir_node *const cnst = new_Const_long(mode_uint, parm_size);
2624 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2625 set_value_for_expression(expr->ap, add);
2630 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2632 ir_type *const irtype = get_ir_type(expr->base.type);
2633 ir_node *const ap = expression_to_firm(expr->ap);
2634 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2635 ir_node *const res = deref_address(irtype, ap, dbgi);
2637 size_t const parm_size = get_type_size(expr->base.type);
2638 ir_node *const cnst = new_Const_long(mode_uint, parm_size);
2639 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2640 set_value_for_expression(expr->ap, add);
2645 static ir_node *dereference_addr(const unary_expression_t *const expression)
2647 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2648 return expression_to_firm(expression->value);
2651 static ir_node *expression_to_addr(const expression_t *expression)
2653 switch(expression->kind) {
2654 case EXPR_REFERENCE:
2655 return reference_addr(&expression->reference);
2656 case EXPR_ARRAY_ACCESS:
2657 return array_access_addr(&expression->array_access);
2659 return select_addr(&expression->select);
2661 return call_expression_to_firm(&expression->call);
2662 case EXPR_UNARY_DEREFERENCE: {
2663 return dereference_addr(&expression->unary);
2668 panic("trying to get address of non-lvalue");
2671 static ir_node *builtin_constant_to_firm(
2672 const builtin_constant_expression_t *expression)
2674 ir_mode *mode = get_ir_mode(expression->base.type);
2677 if (is_constant_expression(expression->value)) {
2682 return new_Const_long(mode, v);
2685 static ir_node *builtin_prefetch_to_firm(
2686 const builtin_prefetch_expression_t *expression)
2688 ir_node *adr = expression_to_firm(expression->adr);
2689 /* no Firm support for prefetch yet */
2694 static ir_node *_expression_to_firm(const expression_t *expression)
2696 switch(expression->kind) {
2697 case EXPR_CHAR_CONST:
2698 return char_const_to_firm(&expression->conste);
2700 return const_to_firm(&expression->conste);
2701 case EXPR_STRING_LITERAL:
2702 return string_literal_to_firm(&expression->string);
2703 case EXPR_WIDE_STRING_LITERAL:
2704 return wide_string_literal_to_firm(&expression->wide_string);
2705 case EXPR_REFERENCE:
2706 return reference_expression_to_firm(&expression->reference);
2708 return call_expression_to_firm(&expression->call);
2710 return unary_expression_to_firm(&expression->unary);
2712 return binary_expression_to_firm(&expression->binary);
2713 case EXPR_ARRAY_ACCESS:
2714 return array_access_to_firm(&expression->array_access);
2716 return sizeof_to_firm(&expression->typeprop);
2718 return alignof_to_firm(&expression->typeprop);
2719 case EXPR_CONDITIONAL:
2720 return conditional_to_firm(&expression->conditional);
2722 return select_to_firm(&expression->select);
2723 case EXPR_CLASSIFY_TYPE:
2724 return classify_type_to_firm(&expression->classify_type);
2726 case EXPR_PRETTY_FUNCTION:
2727 return function_name_to_firm(&expression->string);
2728 case EXPR_STATEMENT:
2729 return statement_expression_to_firm(&expression->statement);
2731 return va_start_expression_to_firm(&expression->va_starte);
2733 return va_arg_expression_to_firm(&expression->va_arge);
2734 case EXPR_BUILTIN_SYMBOL:
2735 panic("unimplemented expression found");
2736 case EXPR_BUILTIN_CONSTANT_P:
2737 return builtin_constant_to_firm(&expression->builtin_constant);
2738 case EXPR_BUILTIN_PREFETCH:
2739 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
2741 return offsetof_to_firm(&expression->offsetofe);
2742 case EXPR_COMPOUND_LITERAL:
2743 return compound_literal_to_firm(&expression->compound_literal);
2749 panic("invalid expression found");
2752 static ir_node *expression_to_firm(const expression_t *expression)
2754 ir_node *res = _expression_to_firm(expression);
2756 if(res != NULL && get_irn_mode(res) == mode_b) {
2757 ir_mode *mode = get_ir_mode(expression->base.type);
2758 res = create_conv(NULL, res, mode);
2764 static ir_node *expression_to_modeb(const expression_t *expression)
2766 ir_node *res = _expression_to_firm(expression);
2767 res = create_conv(NULL, res, mode_b);
2773 * create a short-circuit expression evaluation that tries to construct
2774 * efficient control flow structures for &&, || and ! expressions
2776 static void create_condition_evaluation(const expression_t *expression,
2777 ir_node *true_block,
2778 ir_node *false_block)
2780 switch(expression->kind) {
2781 case EXPR_UNARY_NOT: {
2782 const unary_expression_t *unary_expression = &expression->unary;
2783 create_condition_evaluation(unary_expression->value, false_block,
2787 case EXPR_BINARY_LOGICAL_AND: {
2788 const binary_expression_t *binary_expression = &expression->binary;
2790 ir_node *cur_block = get_cur_block();
2791 ir_node *extra_block = new_immBlock();
2792 set_cur_block(cur_block);
2793 create_condition_evaluation(binary_expression->left, extra_block,
2795 mature_immBlock(extra_block);
2796 set_cur_block(extra_block);
2797 create_condition_evaluation(binary_expression->right, true_block,
2801 case EXPR_BINARY_LOGICAL_OR: {
2802 const binary_expression_t *binary_expression = &expression->binary;
2804 ir_node *cur_block = get_cur_block();
2805 ir_node *extra_block = new_immBlock();
2806 set_cur_block(cur_block);
2807 create_condition_evaluation(binary_expression->left, true_block,
2809 mature_immBlock(extra_block);
2810 set_cur_block(extra_block);
2811 create_condition_evaluation(binary_expression->right, true_block,
2819 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2820 ir_node *condition = expression_to_modeb(expression);
2821 ir_node *cond = new_d_Cond(dbgi, condition);
2822 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
2823 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
2825 /* set branch prediction info based on __builtin_expect */
2826 if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
2827 long cnst = fold_constant(expression->binary.right);
2828 cond_jmp_predicate pred;
2831 pred = COND_JMP_PRED_FALSE;
2833 pred = COND_JMP_PRED_TRUE;
2835 set_Cond_jmp_pred(cond, pred);
2838 add_immBlock_pred(true_block, true_proj);
2839 add_immBlock_pred(false_block, false_proj);
2841 set_cur_block(NULL);
2846 static void create_declaration_entity(declaration_t *declaration,
2847 declaration_kind_t declaration_kind,
2848 ir_type *parent_type)
2850 ident *const id = new_id_from_str(declaration->symbol->string);
2851 ir_type *const irtype = get_ir_type(declaration->type);
2852 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
2853 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
2854 set_entity_ld_ident(entity, id);
2856 declaration->declaration_kind = (unsigned char) declaration_kind;
2857 declaration->v.entity = entity;
2858 set_entity_variability(entity, variability_uninitialized);
2859 if(parent_type == get_tls_type())
2860 set_entity_allocation(entity, allocation_automatic);
2861 else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
2862 set_entity_allocation(entity, allocation_static);
2863 /* TODO: visibility? */
2867 typedef struct type_path_entry_t type_path_entry_t;
2868 struct type_path_entry_t {
2870 ir_initializer_t *initializer;
2872 declaration_t *compound_entry;
2875 typedef struct type_path_t type_path_t;
2876 struct type_path_t {
2877 type_path_entry_t *path;
2882 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
2884 size_t len = ARR_LEN(path->path);
2886 for(size_t i = 0; i < len; ++i) {
2887 const type_path_entry_t *entry = & path->path[i];
2889 type_t *type = skip_typeref(entry->type);
2890 if(is_type_compound(type)) {
2891 fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
2892 } else if(is_type_array(type)) {
2893 fprintf(stderr, "[%u]", entry->index);
2895 fprintf(stderr, "-INVALID-");
2898 fprintf(stderr, " (");
2899 print_type(path->top_type);
2900 fprintf(stderr, ")");
2903 static type_path_entry_t *get_type_path_top(const type_path_t *path)
2905 size_t len = ARR_LEN(path->path);
2907 return & path->path[len-1];
2910 static type_path_entry_t *append_to_type_path(type_path_t *path)
2912 size_t len = ARR_LEN(path->path);
2913 ARR_RESIZE(type_path_entry_t, path->path, len+1);
2915 type_path_entry_t *result = & path->path[len];
2916 memset(result, 0, sizeof(result[0]));
2920 static size_t get_compound_size(const compound_type_t *type)
2922 declaration_t *declaration = type->declaration;
2923 declaration_t *member = declaration->scope.declarations;
2925 for( ; member != NULL; member = member->next) {
2928 /* TODO: cache results? */
2933 static ir_initializer_t *get_initializer_entry(type_path_t *path)
2935 type_t *orig_top_type = path->top_type;
2936 type_t *top_type = skip_typeref(orig_top_type);
2938 assert(is_type_compound(top_type) || is_type_array(top_type));
2940 if(ARR_LEN(path->path) == 0) {
2943 type_path_entry_t *top = get_type_path_top(path);
2944 ir_initializer_t *initializer = top->initializer;
2945 return get_initializer_compound_value(initializer, top->index);
2949 static void descend_into_subtype(type_path_t *path)
2951 type_t *orig_top_type = path->top_type;
2952 type_t *top_type = skip_typeref(orig_top_type);
2954 assert(is_type_compound(top_type) || is_type_array(top_type));
2956 ir_initializer_t *initializer = get_initializer_entry(path);
2958 type_path_entry_t *top = append_to_type_path(path);
2959 top->type = top_type;
2963 if(is_type_compound(top_type)) {
2964 declaration_t *declaration = top_type->compound.declaration;
2965 declaration_t *entry = declaration->scope.declarations;
2967 top->compound_entry = entry;
2969 path->top_type = entry->type;
2970 len = get_compound_size(&top_type->compound);
2972 assert(is_type_array(top_type));
2973 assert(top_type->array.size > 0);
2976 path->top_type = top_type->array.element_type;
2977 len = top_type->array.size;
2979 if(initializer == NULL
2980 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
2981 initializer = create_initializer_compound(len);
2982 /* we have to set the entry at the 2nd latest path entry... */
2983 size_t path_len = ARR_LEN(path->path);
2984 assert(path_len >= 1);
2986 type_path_entry_t *entry = & path->path[path_len-2];
2987 ir_initializer_t *tinitializer = entry->initializer;
2988 set_initializer_compound_value(tinitializer, entry->index,
2992 top->initializer = initializer;
2995 static void ascend_from_subtype(type_path_t *path)
2997 type_path_entry_t *top = get_type_path_top(path);
2999 path->top_type = top->type;
3001 size_t len = ARR_LEN(path->path);
3002 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3005 static void walk_designator(type_path_t *path, const designator_t *designator)
3007 /* designators start at current object type */
3008 ARR_RESIZE(type_path_entry_t, path->path, 1);
3010 for( ; designator != NULL; designator = designator->next) {
3011 type_path_entry_t *top = get_type_path_top(path);
3012 type_t *orig_type = top->type;
3013 type_t *type = skip_typeref(orig_type);
3015 if(designator->symbol != NULL) {
3016 assert(is_type_compound(type));
3018 symbol_t *symbol = designator->symbol;
3020 declaration_t *declaration = type->compound.declaration;
3021 declaration_t *iter = declaration->scope.declarations;
3022 for( ; iter != NULL; iter = iter->next, ++index) {
3023 if(iter->symbol == symbol) {
3027 assert(iter != NULL);
3029 top->type = orig_type;
3030 top->compound_entry = iter;
3032 orig_type = iter->type;
3034 expression_t *array_index = designator->array_index;
3035 assert(designator->array_index != NULL);
3036 assert(is_type_array(type));
3037 assert(is_type_valid(array_index->base.type));
3039 long index = fold_constant(array_index);
3042 if(type->array.size_constant == 1) {
3043 long array_size = type->array.size;
3044 assert(index < array_size);
3048 top->type = orig_type;
3049 top->index = (size_t) index;
3050 orig_type = type->array.element_type;
3052 path->top_type = orig_type;
3054 if(designator->next != NULL) {
3055 descend_into_subtype(path);
3059 path->invalid = false;
3062 static void advance_current_object(type_path_t *path)
3065 /* TODO: handle this... */
3066 panic("invalid initializer in ast2firm (excessive elements)");
3070 type_path_entry_t *top = get_type_path_top(path);
3072 type_t *type = skip_typeref(top->type);
3073 if(is_type_union(type)) {
3074 top->compound_entry = NULL;
3075 } else if(is_type_struct(type)) {
3076 declaration_t *entry = top->compound_entry;
3079 entry = entry->next;
3080 top->compound_entry = entry;
3082 path->top_type = entry->type;
3086 assert(is_type_array(type));
3089 if(!type->array.size_constant || top->index < type->array.size) {
3094 /* we're past the last member of the current sub-aggregate, try if we
3095 * can ascend in the type hierarchy and continue with another subobject */
3096 size_t len = ARR_LEN(path->path);
3099 ascend_from_subtype(path);
3100 advance_current_object(path);
3102 path->invalid = true;
3107 static ir_initializer_t *create_ir_initializer(
3108 const initializer_t *initializer, type_t *type);
3110 static ir_initializer_t *create_ir_initializer_value(
3111 const initializer_value_t *initializer)
3113 ir_node *value = expression_to_firm(initializer->value);
3114 return create_initializer_const(value);
3117 static ir_initializer_t *create_ir_initializer_list(
3118 const initializer_list_t *initializer, type_t *type)
3121 memset(&path, 0, sizeof(path));
3122 path.top_type = type;
3123 path.path = NEW_ARR_F(type_path_entry_t, 0);
3125 descend_into_subtype(&path);
3127 for(size_t i = 0; i < initializer->len; ++i) {
3128 const initializer_t *sub_initializer = initializer->initializers[i];
3130 if(sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3131 walk_designator(&path, sub_initializer->designator.designator);
3135 if(sub_initializer->kind == INITIALIZER_VALUE) {
3136 /* we might have to descend into types until we're at a scalar
3139 type_t *orig_top_type = path.top_type;
3140 type_t *top_type = skip_typeref(orig_top_type);
3142 if(is_type_scalar(top_type))
3144 descend_into_subtype(&path);
3148 ir_initializer_t *sub_irinitializer
3149 = create_ir_initializer(sub_initializer, path.top_type);
3151 size_t path_len = ARR_LEN(path.path);
3152 assert(path_len >= 1);
3153 type_path_entry_t *entry = & path.path[path_len-1];
3154 ir_initializer_t *tinitializer = entry->initializer;
3155 set_initializer_compound_value(tinitializer, entry->index,
3158 advance_current_object(&path);
3161 assert(ARR_LEN(path.path) >= 1);
3162 ir_initializer_t *result = path.path[0].initializer;
3163 DEL_ARR_F(path.path);
3168 static ir_initializer_t *create_ir_initializer_string(
3169 const initializer_string_t *initializer)
3171 size_t len = initializer->string.size;
3172 ir_initializer_t *irinitializer = create_initializer_compound(len);
3174 const char *string = initializer->string.begin;
3175 ir_mode *mode = get_type_mode(ir_type_const_char);
3177 for(size_t i = 0; i < len; ++i) {
3178 tarval *tv = new_tarval_from_long(string[i], mode);
3179 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3181 set_initializer_compound_value(irinitializer, i, char_initializer);
3184 return irinitializer;
3187 static ir_initializer_t *create_ir_initializer_wide_string(
3188 const initializer_wide_string_t *initializer)
3190 size_t len = initializer->string.size;
3191 ir_initializer_t *irinitializer = create_initializer_compound(len);
3193 const wchar_rep_t *string = initializer->string.begin;
3194 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3196 for(size_t i = 0; i < len; ++i) {
3197 tarval *tv = new_tarval_from_long(string[i], mode);
3198 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3200 set_initializer_compound_value(irinitializer, i, char_initializer);
3203 return irinitializer;
3206 static ir_initializer_t *create_ir_initializer(
3207 const initializer_t *initializer, type_t *type)
3209 switch(initializer->kind) {
3210 case INITIALIZER_STRING:
3211 return create_ir_initializer_string(&initializer->string);
3213 case INITIALIZER_WIDE_STRING:
3214 return create_ir_initializer_wide_string(&initializer->wide_string);
3216 case INITIALIZER_LIST:
3217 return create_ir_initializer_list(&initializer->list, type);
3219 case INITIALIZER_VALUE:
3220 return create_ir_initializer_value(&initializer->value);
3222 case INITIALIZER_DESIGNATOR:
3223 panic("unexpected designator initializer found");
3225 panic("unknown initializer");
3229 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3230 ir_entity *entity, type_t *type)
3232 ir_node *memory = get_store();
3233 ir_node *nomem = new_NoMem();
3234 ir_node *frame = get_irg_frame(current_ir_graph);
3235 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3237 if(initializer->kind == INITIALIZER_VALUE) {
3238 initializer_value_t *initializer_value = &initializer->value;
3240 ir_node *value = expression_to_firm(initializer_value->value);
3241 type = skip_typeref(type);
3242 assign_value(dbgi, addr, type, value);
3246 /* create a "template" entity which is copied to the entity on the stack */
3247 ident *const id = unique_ident("initializer");
3248 ir_type *const irtype = get_ir_type(type);
3249 ir_type *const global_type = get_glob_type();
3250 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3251 set_entity_ld_ident(init_entity, id);
3253 set_entity_variability(init_entity, variability_initialized);
3254 set_entity_visibility(init_entity, visibility_local);
3255 set_entity_allocation(init_entity, allocation_static);
3257 ir_graph *const old_current_ir_graph = current_ir_graph;
3258 current_ir_graph = get_const_code_irg();
3260 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3261 set_entity_initializer(init_entity, irinitializer);
3263 assert(current_ir_graph == get_const_code_irg());
3264 current_ir_graph = old_current_ir_graph;
3266 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3267 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3269 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3270 set_store(copyb_mem);
3273 static void create_initializer_local_variable_entity(declaration_t *declaration)
3275 initializer_t *initializer = declaration->init.initializer;
3276 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3277 ir_entity *entity = declaration->v.entity;
3278 type_t *type = declaration->type;
3279 create_local_initializer(initializer, dbgi, entity, type);
3282 static void create_declaration_initializer(declaration_t *declaration)
3284 initializer_t *initializer = declaration->init.initializer;
3285 if(initializer == NULL)
3288 declaration_kind_t declaration_kind
3289 = (declaration_kind_t) declaration->declaration_kind;
3290 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3291 create_initializer_local_variable_entity(declaration);
3295 if(initializer->kind == INITIALIZER_VALUE) {
3296 initializer_value_t *initializer_value = &initializer->value;
3298 ir_node *value = expression_to_firm(initializer_value->value);
3300 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3301 set_value(declaration->v.value_number, value);
3303 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3305 ir_entity *entity = declaration->v.entity;
3307 set_entity_variability(entity, variability_initialized);
3308 set_atomic_ent_value(entity, value);
3311 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
3312 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3314 ir_entity *entity = declaration->v.entity;
3315 ir_initializer_t *irinitializer
3316 = create_ir_initializer(initializer, declaration->type);
3318 set_entity_variability(entity, variability_initialized);
3319 set_entity_initializer(entity, irinitializer);
3324 * Creates a Firm local variable from a declaration.
3326 static void create_local_variable(declaration_t *declaration)
3328 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3330 bool needs_entity = declaration->address_taken;
3331 type_t *type = skip_typeref(declaration->type);
3333 if(is_type_array(type) || is_type_compound(type)) {
3334 needs_entity = true;
3338 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3339 create_declaration_entity(declaration,
3340 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3343 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3344 declaration->v.value_number = next_value_number_function;
3345 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3346 ++next_value_number_function;
3349 create_declaration_initializer(declaration);
3352 static void create_local_static_variable(declaration_t *declaration)
3354 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3356 type_t *const type = skip_typeref(declaration->type);
3357 ir_type *const global_type = get_glob_type();
3358 ident *const id = unique_ident(declaration->symbol->string);
3359 ir_type *const irtype = get_ir_type(type);
3360 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3361 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
3362 set_entity_ld_ident(entity, id);
3364 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3365 declaration->v.entity = entity;
3366 set_entity_variability(entity, variability_uninitialized);
3367 set_entity_visibility(entity, visibility_local);
3368 set_entity_allocation(entity, allocation_static);
3370 ir_graph *const old_current_ir_graph = current_ir_graph;
3371 current_ir_graph = get_const_code_irg();
3373 create_declaration_initializer(declaration);
3375 assert(current_ir_graph == get_const_code_irg());
3376 current_ir_graph = old_current_ir_graph;
3381 static void return_statement_to_firm(return_statement_t *statement)
3383 if(get_cur_block() == NULL)
3386 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3387 ir_type *func_irtype = get_ir_type(current_function_decl->type);
3392 if(get_method_n_ress(func_irtype) > 0) {
3393 ir_type *res_type = get_method_res_type(func_irtype, 0);
3395 if(statement->value != NULL) {
3396 ir_node *node = expression_to_firm(statement->value);
3397 node = do_strict_conv(dbgi, node);
3401 if(is_compound_type(res_type)) {
3404 mode = get_type_mode(res_type);
3406 in[0] = new_Unknown(mode);
3410 /* build return_value for its side effects */
3411 if(statement->value != NULL) {
3412 expression_to_firm(statement->value);
3417 ir_node *store = get_store();
3418 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
3420 ir_node *end_block = get_irg_end_block(current_ir_graph);
3421 add_immBlock_pred(end_block, ret);
3423 set_cur_block(NULL);
3426 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3428 if(get_cur_block() == NULL)
3431 return expression_to_firm(statement->expression);
3434 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3436 ir_node *result = NULL;
3437 statement_t *statement = compound->statements;
3438 for( ; statement != NULL; statement = statement->base.next) {
3439 //context2firm(&statement->scope);
3441 if(statement->base.next == NULL
3442 && statement->kind == STATEMENT_EXPRESSION) {
3443 result = expression_statement_to_firm(
3444 &statement->expression);
3447 statement_to_firm(statement);
3453 static void create_global_variable(declaration_t *declaration)
3457 switch ((storage_class_tag_t)declaration->storage_class) {
3458 case STORAGE_CLASS_STATIC:
3459 vis = visibility_local;
3462 case STORAGE_CLASS_EXTERN:
3463 vis = visibility_external_allocated;
3466 case STORAGE_CLASS_NONE:
3467 vis = visibility_external_visible;
3470 case STORAGE_CLASS_THREAD:
3471 vis = visibility_external_visible;
3474 case STORAGE_CLASS_THREAD_EXTERN:
3475 vis = visibility_external_allocated;
3478 case STORAGE_CLASS_THREAD_STATIC:
3479 vis = visibility_local;
3483 var_type = get_tls_type();
3487 var_type = get_glob_type();
3491 create_declaration_entity(declaration,
3492 DECLARATION_KIND_GLOBAL_VARIABLE,
3494 set_entity_visibility(declaration->v.entity, vis);
3498 case STORAGE_CLASS_TYPEDEF:
3499 case STORAGE_CLASS_AUTO:
3500 case STORAGE_CLASS_REGISTER:
3501 case STORAGE_CLASS_ENUM_ENTRY:
3504 panic("Invalid storage class for global variable");
3507 static void create_local_declaration(declaration_t *declaration)
3509 if(declaration->symbol == NULL)
3512 type_t *type = skip_typeref(declaration->type);
3514 switch ((storage_class_tag_t) declaration->storage_class) {
3515 case STORAGE_CLASS_STATIC:
3516 create_local_static_variable(declaration);
3518 case STORAGE_CLASS_ENUM_ENTRY:
3519 panic("enum entry declaration in local block found");
3520 case STORAGE_CLASS_EXTERN:
3521 create_global_variable(declaration);
3522 create_declaration_initializer(declaration);
3524 case STORAGE_CLASS_NONE:
3525 case STORAGE_CLASS_AUTO:
3526 case STORAGE_CLASS_REGISTER:
3527 if(is_type_function(type)) {
3528 if(declaration->init.statement != NULL) {
3529 panic("nested functions not supported yet");
3531 get_function_entity(declaration);
3534 create_local_variable(declaration);
3537 case STORAGE_CLASS_TYPEDEF:
3538 case STORAGE_CLASS_THREAD:
3539 case STORAGE_CLASS_THREAD_EXTERN:
3540 case STORAGE_CLASS_THREAD_STATIC:
3543 panic("invalid storage class found");
3546 static void declaration_statement_to_firm(declaration_statement_t *statement)
3548 declaration_t *declaration = statement->declarations_begin;
3549 declaration_t *end = statement->declarations_end->next;
3550 for( ; declaration != end; declaration = declaration->next) {
3551 if(declaration->namespc != NAMESPACE_NORMAL)
3553 create_local_declaration(declaration);
3557 static void if_statement_to_firm(if_statement_t *statement)
3559 ir_node *cur_block = get_cur_block();
3561 ir_node *fallthrough_block = new_immBlock();
3563 /* the true (blocks) */
3564 ir_node *true_block;
3565 if (statement->true_statement != NULL) {
3566 true_block = new_immBlock();
3567 statement_to_firm(statement->true_statement);
3568 if(get_cur_block() != NULL) {
3569 ir_node *jmp = new_Jmp();
3570 add_immBlock_pred(fallthrough_block, jmp);
3573 true_block = fallthrough_block;
3576 /* the false (blocks) */
3577 ir_node *false_block;
3578 if(statement->false_statement != NULL) {
3579 false_block = new_immBlock();
3581 statement_to_firm(statement->false_statement);
3582 if(get_cur_block() != NULL) {
3583 ir_node *jmp = new_Jmp();
3584 add_immBlock_pred(fallthrough_block, jmp);
3587 false_block = fallthrough_block;
3590 /* create the condition */
3591 if(cur_block != NULL) {
3592 set_cur_block(cur_block);
3593 create_condition_evaluation(statement->condition, true_block,
3597 mature_immBlock(true_block);
3598 if(false_block != fallthrough_block) {
3599 mature_immBlock(false_block);
3601 mature_immBlock(fallthrough_block);
3603 set_cur_block(fallthrough_block);
3606 static void while_statement_to_firm(while_statement_t *statement)
3608 ir_node *jmp = NULL;
3609 if(get_cur_block() != NULL) {
3613 /* create the header block */
3614 ir_node *header_block = new_immBlock();
3616 add_immBlock_pred(header_block, jmp);
3619 /* the false block */
3620 ir_node *false_block = new_immBlock();
3623 ir_node *body_block;
3624 if (statement->body != NULL) {
3625 ir_node *old_continue_label = continue_label;
3626 ir_node *old_break_label = break_label;
3627 continue_label = header_block;
3628 break_label = false_block;
3630 body_block = new_immBlock();
3631 statement_to_firm(statement->body);
3633 assert(continue_label == header_block);
3634 assert(break_label == false_block);
3635 continue_label = old_continue_label;
3636 break_label = old_break_label;
3638 if(get_cur_block() != NULL) {
3640 add_immBlock_pred(header_block, jmp);
3643 body_block = header_block;
3646 /* create the condition */
3647 set_cur_block(header_block);
3649 create_condition_evaluation(statement->condition, body_block, false_block);
3650 mature_immBlock(body_block);
3651 mature_immBlock(false_block);
3652 mature_immBlock(header_block);
3654 set_cur_block(false_block);
3657 static void do_while_statement_to_firm(do_while_statement_t *statement)
3659 ir_node *jmp = NULL;
3660 if(get_cur_block() != NULL) {
3664 /* create the header block */
3665 ir_node *header_block = new_immBlock();
3667 /* the false block */
3668 ir_node *false_block = new_immBlock();
3671 ir_node *body_block = new_immBlock();
3673 add_immBlock_pred(body_block, jmp);
3676 if (statement->body != NULL) {
3677 ir_node *old_continue_label = continue_label;
3678 ir_node *old_break_label = break_label;
3679 continue_label = header_block;
3680 break_label = false_block;
3682 statement_to_firm(statement->body);
3684 assert(continue_label == header_block);
3685 assert(break_label == false_block);
3686 continue_label = old_continue_label;
3687 break_label = old_break_label;
3689 if (get_cur_block() == NULL) {
3690 mature_immBlock(header_block);
3691 mature_immBlock(body_block);
3692 mature_immBlock(false_block);
3697 ir_node *body_jmp = new_Jmp();
3698 add_immBlock_pred(header_block, body_jmp);
3699 mature_immBlock(header_block);
3701 /* create the condition */
3702 set_cur_block(header_block);
3704 create_condition_evaluation(statement->condition, body_block, false_block);
3705 mature_immBlock(body_block);
3706 mature_immBlock(false_block);
3707 mature_immBlock(header_block);
3709 set_cur_block(false_block);
3712 static void for_statement_to_firm(for_statement_t *statement)
3714 ir_node *jmp = NULL;
3715 if (get_cur_block() != NULL) {
3716 if(statement->initialisation != NULL) {
3717 expression_to_firm(statement->initialisation);
3720 /* create declarations */
3721 declaration_t *declaration = statement->scope.declarations;
3722 for( ; declaration != NULL; declaration = declaration->next) {
3723 create_local_declaration(declaration);
3730 /* create the step block */
3731 ir_node *const step_block = new_immBlock();
3732 if (statement->step != NULL) {
3733 expression_to_firm(statement->step);
3735 ir_node *const step_jmp = new_Jmp();
3737 /* create the header block */
3738 ir_node *const header_block = new_immBlock();
3740 add_immBlock_pred(header_block, jmp);
3742 add_immBlock_pred(header_block, step_jmp);
3744 /* the false block */
3745 ir_node *const false_block = new_immBlock();
3748 ir_node * body_block;
3749 if (statement->body != NULL) {
3750 ir_node *const old_continue_label = continue_label;
3751 ir_node *const old_break_label = break_label;
3752 continue_label = step_block;
3753 break_label = false_block;
3755 body_block = new_immBlock();
3756 statement_to_firm(statement->body);
3758 assert(continue_label == step_block);
3759 assert(break_label == false_block);
3760 continue_label = old_continue_label;
3761 break_label = old_break_label;
3763 if (get_cur_block() != NULL) {
3765 add_immBlock_pred(step_block, jmp);
3768 body_block = step_block;
3771 /* create the condition */
3772 set_cur_block(header_block);
3773 if (statement->condition != NULL) {
3774 create_condition_evaluation(statement->condition, body_block,
3777 keep_alive(header_block);
3779 add_immBlock_pred(body_block, jmp);
3782 mature_immBlock(body_block);
3783 mature_immBlock(false_block);
3784 mature_immBlock(step_block);
3785 mature_immBlock(header_block);
3786 mature_immBlock(false_block);
3788 set_cur_block(false_block);
3791 static void create_jump_statement(const statement_t *statement,
3792 ir_node *target_block)
3794 if(get_cur_block() == NULL)
3797 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3798 ir_node *jump = new_d_Jmp(dbgi);
3799 add_immBlock_pred(target_block, jump);
3801 set_cur_block(NULL);
3804 static void switch_statement_to_firm(const switch_statement_t *statement)
3806 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3808 ir_node *expression = expression_to_firm(statement->expression);
3809 ir_node *cond = new_d_Cond(dbgi, expression);
3810 ir_node *break_block = new_immBlock();
3812 set_cur_block(NULL);
3814 ir_node *const old_switch_cond = current_switch_cond;
3815 ir_node *const old_break_label = break_label;
3816 const bool old_saw_default_label = saw_default_label;
3817 current_switch_cond = cond;
3818 break_label = break_block;
3820 if (statement->body != NULL) {
3821 statement_to_firm(statement->body);
3824 if(get_cur_block() != NULL) {
3825 ir_node *jmp = new_Jmp();
3826 add_immBlock_pred(break_block, jmp);
3829 if (!saw_default_label) {
3830 set_cur_block(get_nodes_block(cond));
3831 ir_node *const proj = new_d_defaultProj(dbgi, cond,
3832 MAGIC_DEFAULT_PN_NUMBER);
3833 add_immBlock_pred(break_block, proj);
3836 assert(current_switch_cond == cond);
3837 assert(break_label == break_block);
3838 current_switch_cond = old_switch_cond;
3839 break_label = old_break_label;
3840 saw_default_label = old_saw_default_label;
3842 mature_immBlock(break_block);
3843 set_cur_block(break_block);
3846 static void case_label_to_firm(const case_label_statement_t *statement)
3848 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3850 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
3852 /* let's create a node and hope firm constant folding creates a Const
3855 ir_node *old_block = get_nodes_block(current_switch_cond);
3856 ir_node *block = new_immBlock();
3858 set_cur_block(old_block);
3859 if(statement->expression != NULL) {
3860 long start_pn = fold_constant(statement->expression);
3861 long end_pn = start_pn;
3862 if (statement->end_range != NULL) {
3863 end_pn = fold_constant(statement->end_range);
3865 assert(start_pn <= end_pn);
3866 /* create jumps for all cases in the given range */
3867 for (long pn = start_pn; pn <= end_pn; ++pn) {
3868 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
3869 /* oops someone detected our cheating... */
3870 panic("magic default pn used");
3872 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
3873 add_immBlock_pred(block, proj);
3876 saw_default_label = true;
3877 proj = new_d_defaultProj(dbgi, current_switch_cond,
3878 MAGIC_DEFAULT_PN_NUMBER);
3880 add_immBlock_pred(block, proj);
3883 if (fallthrough != NULL) {
3884 add_immBlock_pred(block, fallthrough);
3886 mature_immBlock(block);
3887 set_cur_block(block);
3889 if(statement->statement != NULL) {
3890 statement_to_firm(statement->statement);
3894 static ir_node *get_label_block(declaration_t *label)
3896 assert(label->namespc == NAMESPACE_LABEL);
3898 if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
3899 return label->v.block;
3901 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
3903 ir_node *old_cur_block = get_cur_block();
3904 ir_node *block = new_immBlock();
3905 set_cur_block(old_cur_block);
3907 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
3908 label->v.block = block;
3910 ARR_APP1(ir_node *, imature_blocks, block);
3915 static void label_to_firm(const label_statement_t *statement)
3917 ir_node *block = get_label_block(statement->label);
3919 if(get_cur_block() != NULL) {
3920 ir_node *jmp = new_Jmp();
3921 add_immBlock_pred(block, jmp);
3924 set_cur_block(block);
3927 if(statement->statement != NULL) {
3928 statement_to_firm(statement->statement);
3932 static void goto_to_firm(const goto_statement_t *statement)
3934 if(get_cur_block() == NULL)
3937 ir_node *block = get_label_block(statement->label);
3938 ir_node *jmp = new_Jmp();
3939 add_immBlock_pred(block, jmp);
3941 set_cur_block(NULL);
3944 typedef enum modifier_t {
3945 ASM_MODIFIER_WRITE_ONLY = 1 << 0,
3946 ASM_MODIFIER_READ_WRITE = 1 << 1,
3947 ASM_MODIFIER_COMMUTATIVE = 1 << 2,
3948 ASM_MODIFIER_EARLYCLOBBER = 1 << 3,
3951 static void asm_statement_to_firm(const asm_statement_t *statement)
3954 fprintf(stderr, "WARNING asm not implemented yet!\n");
3956 bool needs_memory = false;
3958 size_t n_clobbers = 0;
3959 asm_clobber_t *clobber = statement->clobbers;
3960 for( ; clobber != NULL; clobber = clobber->next) {
3961 if(strcmp(clobber->clobber, "memory") == 0) {
3962 needs_memory = true;
3966 ident *id = new_id_from_str(clobber->clobber);
3967 obstack_ptr_grow(&asm_obst, id);
3970 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
3971 ident **clobbers = NULL;
3972 if(n_clobbers > 0) {
3973 clobbers = obstack_finish(&asm_obst);
3976 /* find and count input and output constraints */
3977 asm_constraint_t *constraint = statement->inputs;
3978 for( ; constraint != NULL; constraint = constraint->next) {
3980 bool supports_memop = false;
3981 for(const char *c = constraint->constraints; *c != 0; ++c) {
3982 /* TODO: improve error messages */
3986 panic("multiple alternative assembler constraints not "
3994 supports_memop = true;
3995 obstack_1grow(&asm_obst, *c);
3998 if(modifiers & ASM_MODIFIER_READ_WRITE)
3999 panic("inconsistent register constraints");
4000 modifiers |= ASM_MODIFIER_WRITE_ONLY;
4003 if(modifiers & ASM_MODIFIER_WRITE_ONLY)
4004 panic("inconsistent register constraints");
4005 modifiers |= ASM_MODIFIER_READ_WRITE;
4008 modifiers |= ASM_MODIFIER_EARLYCLOBBER;
4009 panic("early clobber assembler constraint not supported yet");
4012 modifiers |= ASM_MODIFIER_COMMUTATIVE;
4013 panic("commutative assembler constraint not supported yet");
4016 /* skip register preferences stuff... */
4017 while(*c != 0 && *c != ',')
4021 /* skip register preferences stuff... */
4025 obstack_1grow(&asm_obst, *c);
4029 obstack_1grow(&asm_obst, '\0');
4030 const char *constraint_string = obstack_finish(&asm_obst);
4032 needs_memory |= supports_memop;
4033 if(supports_memop) {
4040 static void statement_to_firm(statement_t *statement)
4042 switch(statement->kind) {
4043 case STATEMENT_INVALID:
4044 panic("invalid statement found");
4045 case STATEMENT_COMPOUND:
4046 compound_statement_to_firm(&statement->compound);
4048 case STATEMENT_RETURN:
4049 return_statement_to_firm(&statement->returns);
4051 case STATEMENT_EXPRESSION:
4052 expression_statement_to_firm(&statement->expression);
4055 if_statement_to_firm(&statement->ifs);
4057 case STATEMENT_WHILE:
4058 while_statement_to_firm(&statement->whiles);
4060 case STATEMENT_DO_WHILE:
4061 do_while_statement_to_firm(&statement->do_while);
4063 case STATEMENT_DECLARATION:
4064 declaration_statement_to_firm(&statement->declaration);
4066 case STATEMENT_BREAK:
4067 create_jump_statement(statement, break_label);
4069 case STATEMENT_CONTINUE:
4070 create_jump_statement(statement, continue_label);
4072 case STATEMENT_SWITCH:
4073 switch_statement_to_firm(&statement->switchs);
4075 case STATEMENT_CASE_LABEL:
4076 case_label_to_firm(&statement->case_label);
4079 for_statement_to_firm(&statement->fors);
4081 case STATEMENT_LABEL:
4082 label_to_firm(&statement->label);
4084 case STATEMENT_GOTO:
4085 goto_to_firm(&statement->gotos);
4088 asm_statement_to_firm(&statement->asms);
4091 panic("Statement not implemented\n");
4094 static int count_decls_in_expression(const expression_t *expression);
4096 static int count_local_declarations(const declaration_t * decl,
4097 const declaration_t *const end)
4100 for (; decl != end; decl = decl->next) {
4101 if(decl->namespc != NAMESPACE_NORMAL)
4103 const type_t *type = skip_typeref(decl->type);
4104 if (!decl->address_taken && is_type_scalar(type))
4106 const initializer_t *initializer = decl->init.initializer;
4107 /* FIXME: should walk initializer hierarchies... */
4108 if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
4109 count += count_decls_in_expression(initializer->value.value);
4115 static int count_decls_in_expression(const expression_t *expression) {
4116 if(expression == NULL)
4119 switch(expression->base.kind) {
4120 case EXPR_STATEMENT:
4121 return count_decls_in_stmts(expression->statement.statement);
4123 int count_left = count_decls_in_expression(expression->binary.left);
4124 int count_right = count_decls_in_expression(expression->binary.right);
4125 return count_left + count_right;
4128 return count_decls_in_expression(expression->unary.value);
4131 call_argument_t *argument = expression->call.arguments;
4132 for( ; argument != NULL; argument = argument->next) {
4133 count += count_decls_in_expression(argument->expression);
4142 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
4143 * (or implement all the missing expressions here/implement a walker)
4149 static int count_decls_in_stmts(const statement_t *stmt)
4152 for (; stmt != NULL; stmt = stmt->base.next) {
4153 switch (stmt->kind) {
4154 case STATEMENT_DECLARATION: {
4155 const declaration_statement_t *const decl_stmt = &stmt->declaration;
4156 count += count_local_declarations(decl_stmt->declarations_begin,
4157 decl_stmt->declarations_end->next);
4161 case STATEMENT_COMPOUND: {
4162 const compound_statement_t *const comp =
4164 count += count_decls_in_stmts(comp->statements);
4168 case STATEMENT_IF: {
4169 const if_statement_t *const if_stmt = &stmt->ifs;
4170 count += count_decls_in_expression(if_stmt->condition);
4171 count += count_decls_in_stmts(if_stmt->true_statement);
4172 count += count_decls_in_stmts(if_stmt->false_statement);
4176 case STATEMENT_SWITCH: {
4177 const switch_statement_t *const switch_stmt = &stmt->switchs;
4178 count += count_decls_in_expression(switch_stmt->expression);
4179 count += count_decls_in_stmts(switch_stmt->body);
4183 case STATEMENT_LABEL: {
4184 const label_statement_t *const label_stmt = &stmt->label;
4185 if(label_stmt->statement != NULL) {
4186 count += count_decls_in_stmts(label_stmt->statement);
4191 case STATEMENT_WHILE: {
4192 const while_statement_t *const while_stmt = &stmt->whiles;
4193 count += count_decls_in_expression(while_stmt->condition);
4194 count += count_decls_in_stmts(while_stmt->body);
4198 case STATEMENT_DO_WHILE: {
4199 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
4200 count += count_decls_in_expression(do_while_stmt->condition);
4201 count += count_decls_in_stmts(do_while_stmt->body);
4205 case STATEMENT_FOR: {
4206 const for_statement_t *const for_stmt = &stmt->fors;
4207 count += count_local_declarations(for_stmt->scope.declarations, NULL);
4208 count += count_decls_in_expression(for_stmt->initialisation);
4209 count += count_decls_in_expression(for_stmt->condition);
4210 count += count_decls_in_expression(for_stmt->step);
4211 count += count_decls_in_stmts(for_stmt->body);
4215 case STATEMENT_CASE_LABEL: {
4216 const case_label_statement_t *label = &stmt->case_label;
4217 count += count_decls_in_expression(label->expression);
4218 if(label->statement != NULL) {
4219 count += count_decls_in_stmts(label->statement);
4225 case STATEMENT_BREAK:
4226 case STATEMENT_CONTINUE:
4229 case STATEMENT_EXPRESSION: {
4230 const expression_statement_t *expr_stmt = &stmt->expression;
4231 count += count_decls_in_expression(expr_stmt->expression);
4235 case STATEMENT_GOTO:
4236 case STATEMENT_INVALID:
4239 case STATEMENT_RETURN: {
4240 const return_statement_t *ret_stmt = &stmt->returns;
4241 count += count_decls_in_expression(ret_stmt->value);
4249 static int get_function_n_local_vars(declaration_t *declaration)
4253 /* count parameters */
4254 count += count_local_declarations(declaration->scope.declarations, NULL);
4256 /* count local variables declared in body */
4257 count += count_decls_in_stmts(declaration->init.statement);
4262 static void initialize_function_parameters(declaration_t *declaration)
4264 ir_graph *irg = current_ir_graph;
4265 ir_node *args = get_irg_args(irg);
4266 ir_node *start_block = get_irg_start_block(irg);
4267 ir_type *function_irtype = get_ir_type(declaration->type);
4270 declaration_t *parameter = declaration->scope.declarations;
4271 for( ; parameter != NULL; parameter = parameter->next, ++n) {
4272 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
4273 type_t *type = skip_typeref(parameter->type);
4275 bool needs_entity = parameter->address_taken;
4276 assert(!is_type_array(type));
4277 if(is_type_compound(type)) {
4278 needs_entity = true;
4282 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
4283 ident *id = new_id_from_str(parameter->symbol->string);
4284 set_entity_ident(entity, id);
4286 parameter->declaration_kind
4287 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
4288 parameter->v.entity = entity;
4292 ir_mode *mode = get_ir_mode(parameter->type);
4294 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
4296 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
4297 parameter->v.value_number = next_value_number_function;
4298 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
4299 ++next_value_number_function;
4301 set_value(parameter->v.value_number, proj);
4306 * Handle additional decl modifiers for IR-graphs
4308 * @param irg the IR-graph
4309 * @param dec_modifiers additional modifiers
4311 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
4313 if (decl_modifiers & DM_NORETURN) {
4314 /* TRUE if the declaration includes the Microsoft
4315 __declspec(noreturn) specifier. */
4316 set_irg_additional_property(irg, mtp_property_noreturn);
4318 if (decl_modifiers & DM_NOTHROW) {
4319 /* TRUE if the declaration includes the Microsoft
4320 __declspec(nothrow) specifier. */
4321 set_irg_additional_property(irg, mtp_property_nothrow);
4323 if (decl_modifiers & DM_NAKED) {
4324 /* TRUE if the declaration includes the Microsoft
4325 __declspec(naked) specifier. */
4326 set_irg_additional_property(irg, mtp_property_naked);
4328 if (decl_modifiers & DM_FORCEINLINE) {
4329 /* TRUE if the declaration includes the
4330 Microsoft __forceinline specifier. */
4331 set_irg_inline_property(irg, irg_inline_forced);
4333 if (decl_modifiers & DM_NOINLINE) {
4334 /* TRUE if the declaration includes the Microsoft
4335 __declspec(noinline) specifier. */
4336 set_irg_inline_property(irg, irg_inline_forbidden);
4340 static void create_function(declaration_t *declaration)
4342 ir_entity *function_entity = get_function_entity(declaration);
4344 if(declaration->init.statement == NULL)
4347 current_function_decl = declaration;
4348 current_function_name = NULL;
4350 assert(imature_blocks == NULL);
4351 imature_blocks = NEW_ARR_F(ir_node*, 0);
4353 int n_local_vars = get_function_n_local_vars(declaration);
4354 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
4355 ir_node *first_block = get_cur_block();
4357 /* set inline flags */
4358 if (declaration->is_inline)
4359 set_irg_inline_property(irg, irg_inline_recomended);
4360 handle_decl_modifier_irg(irg, declaration->modifiers);
4362 next_value_number_function = 0;
4363 initialize_function_parameters(declaration);
4365 statement_to_firm(declaration->init.statement);
4367 ir_node *end_block = get_irg_end_block(irg);
4369 /* do we have a return statement yet? */
4370 if(get_cur_block() != NULL) {
4371 type_t *type = skip_typeref(declaration->type);
4372 assert(is_type_function(type));
4373 const function_type_t *func_type = &type->function;
4374 const type_t *return_type
4375 = skip_typeref(func_type->return_type);
4378 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
4379 ret = new_Return(get_store(), 0, NULL);
4382 if(is_type_scalar(return_type)) {
4383 mode = get_ir_mode(func_type->return_type);
4389 /* ยง5.1.2.2.3 main implicitly returns 0 */
4390 if (strcmp(declaration->symbol->string, "main") == 0) {
4391 in[0] = new_Const(mode, get_mode_null(mode));
4393 in[0] = new_Unknown(mode);
4395 ret = new_Return(get_store(), 1, in);
4397 add_immBlock_pred(end_block, ret);
4400 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
4401 mature_immBlock(imature_blocks[i]);
4403 DEL_ARR_F(imature_blocks);
4404 imature_blocks = NULL;
4406 mature_immBlock(first_block);
4407 mature_immBlock(end_block);
4409 irg_finalize_cons(irg);
4411 /* finalize the frame type */
4412 ir_type *frame_type = get_irg_frame_type(irg);
4413 int n = get_compound_n_members(frame_type);
4416 for(int i = 0; i < n; ++i) {
4417 ir_entity *entity = get_compound_member(frame_type, i);
4418 ir_type *entity_type = get_entity_type(entity);
4420 int align = get_type_alignment_bytes(entity_type);
4421 if(align > align_all)
4425 misalign = offset % align;
4427 offset += align - misalign;
4431 set_entity_offset(entity, offset);
4432 offset += get_type_size_bytes(entity_type);
4434 set_type_size_bytes(frame_type, offset);
4435 set_type_alignment_bytes(frame_type, align_all);
4436 set_type_state(frame_type, layout_fixed);
4441 static void scope_to_firm(scope_t *scope)
4443 /* first pass: create declarations */
4444 declaration_t *declaration = scope->declarations;
4445 for( ; declaration != NULL; declaration = declaration->next) {
4446 if(declaration->namespc != NAMESPACE_NORMAL)
4448 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4449 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4451 if(declaration->symbol == NULL)
4454 type_t *type = skip_typeref(declaration->type);
4455 if(is_type_function(type)) {
4456 get_function_entity(declaration);
4458 create_global_variable(declaration);
4462 /* second pass: create code/initializers */
4463 declaration = scope->declarations;
4464 for( ; declaration != NULL; declaration = declaration->next) {
4465 if(declaration->namespc != NAMESPACE_NORMAL)
4467 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4468 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4470 if(declaration->symbol == NULL)
4473 type_t *type = declaration->type;
4474 if(type->kind == TYPE_FUNCTION) {
4475 create_function(declaration);
4477 assert(declaration->declaration_kind
4478 == DECLARATION_KIND_GLOBAL_VARIABLE);
4479 current_ir_graph = get_const_code_irg();
4480 create_declaration_initializer(declaration);
4485 void init_ast2firm(void)
4487 obstack_init(&asm_obst);
4488 init_atomic_modes();
4490 /* create idents for all known runtime functions */
4491 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
4492 predef_idents[rts_data[i].id] = new_id_from_str(rts_data[i].name);
4496 static void init_ir_types(void)
4498 static int ir_types_initialized = 0;
4499 if(ir_types_initialized)
4501 ir_types_initialized = 1;
4503 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
4504 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
4505 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
4507 ir_type_int = get_ir_type(type_int);
4508 ir_type_const_char = get_ir_type(type_const_char);
4509 ir_type_wchar_t = get_ir_type(type_wchar_t);
4510 ir_type_void = get_ir_type(type_int); /* we don't have a real void
4513 type_void->base.firm_type = ir_type_void;
4516 void exit_ast2firm(void)
4518 obstack_free(&asm_obst, NULL);
4521 void translation_unit_to_firm(translation_unit_t *unit)
4523 /* just to be sure */
4524 continue_label = NULL;
4526 current_switch_cond = NULL;
4530 scope_to_firm(&unit->scope);