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"
22 #include "driver/firm_opt.h"
23 #include "driver/firm_cmdline.h"
25 #define MAGIC_DEFAULT_PN_NUMBER (long) -314159265
27 static ir_type *ir_type_const_char;
28 static ir_type *ir_type_wchar_t;
29 static ir_type *ir_type_void;
30 static ir_type *ir_type_int;
32 static type_t *type_const_char;
33 static type_t *type_void;
34 static type_t *type_int;
36 static int next_value_number_function;
37 static ir_node *continue_label;
38 static ir_node *break_label;
39 static ir_node *current_switch_cond;
40 static bool saw_default_label;
41 static ir_node **imature_blocks;
43 static const declaration_t *current_function_decl;
44 static ir_node *current_function_name;
46 static struct obstack asm_obst;
48 typedef enum declaration_kind_t {
49 DECLARATION_KIND_UNKNOWN,
50 DECLARATION_KIND_FUNCTION,
51 DECLARATION_KIND_GLOBAL_VARIABLE,
52 DECLARATION_KIND_LOCAL_VARIABLE,
53 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
54 DECLARATION_KIND_COMPOUND_MEMBER,
55 DECLARATION_KIND_LABEL_BLOCK,
56 DECLARATION_KIND_ENUM_ENTRY
59 static ir_type *get_ir_type(type_t *type);
60 static int count_decls_in_stmts(const statement_t *stmt);
62 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
64 const declaration_t *declaration = get_irg_loc_description(irg, pos);
66 warningf(declaration->source_position, "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) {
358 static long fold_constant(const expression_t *expression);
360 static ir_type *create_atomic_type(const atomic_type_t *type)
362 dbg_info *dbgi = get_dbg_info(&type->type.source_position);
363 ir_mode *mode = get_atomic_mode(type);
364 ident *id = get_mode_ident(mode);
365 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
367 if(type->akind == ATOMIC_TYPE_LONG_DOUBLE
368 || type->akind == ATOMIC_TYPE_DOUBLE) {
369 set_type_alignment_bytes(irtype, 4);
375 static ir_type *create_method_type(const function_type_t *function_type)
377 type_t *return_type = function_type->return_type;
379 ident *id = unique_ident("functiontype");
380 int n_parameters = count_parameters(function_type);
381 int n_results = return_type == type_void ? 0 : 1;
382 dbg_info *dbgi = get_dbg_info(&function_type->type.source_position);
383 ir_type *irtype = new_d_type_method(id, n_parameters, n_results, dbgi);
385 if(return_type != type_void) {
386 ir_type *restype = get_ir_type(return_type);
387 set_method_res_type(irtype, 0, restype);
390 function_parameter_t *parameter = function_type->parameters;
392 for( ; parameter != NULL; parameter = parameter->next) {
393 ir_type *p_irtype = get_ir_type(parameter->type);
394 set_method_param_type(irtype, n, p_irtype);
398 if(function_type->variadic || function_type->unspecified_parameters) {
399 set_method_variadicity(irtype, variadicity_variadic);
405 static ir_type *create_pointer_type(pointer_type_t *type)
407 type_t *points_to = type->points_to;
408 ir_type *ir_points_to;
409 /* Avoid endless recursion if the points_to type contains this poiner type
410 * again (might be a struct). We therefore first create a void* pointer
411 * and then set the real points_to type
413 dbg_info *dbgi = get_dbg_info(&type->type.source_position);
414 ir_type *ir_type = new_d_type_pointer(unique_ident("pointer"),
415 ir_type_void, mode_P_data, dbgi);
416 type->type.firm_type = ir_type;
418 ir_points_to = get_ir_type(points_to);
419 set_pointer_points_to_type(ir_type, ir_points_to);
424 static ir_type *create_array_type(array_type_t *type)
426 type_t *element_type = type->element_type;
427 ir_type *ir_element_type = get_ir_type(element_type);
429 ident *id = unique_ident("array");
430 dbg_info *dbgi = get_dbg_info(&type->type.source_position);
431 ir_type *ir_type = new_d_type_array(id, 1, ir_element_type, dbgi);
433 if(type->size != NULL) {
434 int n_elements = fold_constant(type->size);
436 set_array_bounds_int(ir_type, 0, 0, n_elements);
438 size_t elemsize = get_type_size_bytes(ir_element_type);
439 int align = get_type_alignment_bytes(ir_element_type);
440 if(elemsize % align > 0) {
441 elemsize += align - (elemsize % align);
443 set_type_size_bytes(ir_type, n_elements * elemsize);
444 set_type_alignment_bytes(ir_type, align);
445 set_type_state(ir_type, layout_fixed);
447 set_array_lower_bound_int(ir_type, 0, 0);
454 * Return the signed integer type of size bits.
456 * @param size the size
458 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
461 static ir_mode *s_modes[64 + 1] = {NULL, };
465 if (size <= 0 || size > 64)
468 mode = s_modes[size];
472 snprintf(name, sizeof(name), "bf_I%u", size);
473 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
474 size <= 32 ? 32 : size );
475 s_modes[size] = mode;
479 snprintf(name, sizeof(name), "I%u", size);
480 ident *id = new_id_from_str(name);
481 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
482 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
483 set_primitive_base_type(res, base_tp);
489 * Return the unsigned integer type of size bits.
491 * @param size the size
493 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
496 static ir_mode *u_modes[64 + 1] = {NULL, };
500 if (size <= 0 || size > 64)
503 mode = u_modes[size];
507 snprintf(name, sizeof(name), "bf_U%u", size);
508 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
509 size <= 32 ? 32 : size );
510 u_modes[size] = mode;
515 snprintf(name, sizeof(name), "U%u", size);
516 ident *id = new_id_from_str(name);
517 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
518 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
519 set_primitive_base_type(res, base_tp);
524 static ir_type *create_bitfield_type(bitfield_type_t *const type)
526 type_t *base = skip_typeref(type->base);
527 assert(base->kind == TYPE_ATOMIC);
528 ir_type *irbase = get_ir_type(base);
530 unsigned size = fold_constant(type->size);
532 assert(!is_type_float(base));
533 if(is_type_signed(base)) {
534 return get_signed_int_type_for_bit_size(irbase, size);
536 return get_unsigned_int_type_for_bit_size(irbase, size);
540 #define INVALID_TYPE ((ir_type_ptr)-1)
542 static ir_type *create_struct_type(compound_type_t *type)
544 symbol_t *symbol = type->declaration->symbol;
547 id = unique_ident(symbol->string);
549 id = unique_ident("__anonymous_struct");
551 dbg_info *dbgi = get_dbg_info(&type->type.source_position);
552 ir_type *irtype = new_d_type_struct(id, dbgi);
554 type->type.firm_type = irtype;
556 size_t align_all = 1;
558 size_t bit_offset = 0;
559 declaration_t *entry = type->declaration->scope.declarations;
560 for( ; entry != NULL; entry = entry->next) {
561 if(entry->namespc != NAMESPACE_NORMAL)
564 type_t *entry_type = skip_typeref(entry->type);
565 ir_type *base_irtype;
566 if(entry_type->kind == TYPE_BITFIELD) {
567 base_irtype = get_ir_type(entry_type->bitfield.base);
569 base_irtype = get_ir_type(entry_type);
572 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
573 size_t misalign = offset % entry_alignment;
575 dbg_info *dbgi = get_dbg_info(&entry->source_position);
576 ir_entity *entity = NULL;
577 if(entry->symbol != NULL) {
578 ident *ident = new_id_from_str(entry->symbol->string);
579 ir_type *entry_irtype = get_ir_type(entry_type);
580 entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
582 /* only bitfields are allowed to be anonymous */
583 assert(entry_type->kind == TYPE_BITFIELD);
587 size_t bits_remainder;
588 if(entry_type->kind == TYPE_BITFIELD) {
589 size_t size_bits = fold_constant(entry_type->bitfield.size);
590 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
592 if(size_bits > rest_size_bits) {
593 /* start a new bucket */
594 offset += entry_alignment - misalign;
600 /* put into current bucket */
601 base = offset - misalign;
602 bits_remainder = misalign * 8 + bit_offset;
605 offset += size_bits / 8;
606 bit_offset = bit_offset + (size_bits % 8);
608 size_t entry_size = get_type_size_bytes(base_irtype);
609 if(misalign > 0 || bit_offset > 0)
610 offset += entry_alignment - misalign;
614 offset += entry_size;
618 if(entry_alignment > align_all) {
619 if(entry_alignment % align_all != 0) {
620 panic("uneven alignments not supported yet");
622 align_all = entry_alignment;
626 set_entity_offset(entity, base);
627 set_entity_offset_bits_remainder(entity,
628 (unsigned char) bits_remainder);
629 add_struct_member(irtype, entity);
630 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
631 assert(entry->v.entity == NULL);
632 entry->v.entity = entity;
636 size_t misalign = offset % align_all;
637 if(misalign > 0 || bit_offset > 0) {
638 offset += align_all - misalign;
640 set_type_alignment_bytes(irtype, align_all);
641 set_type_size_bytes(irtype, offset);
642 set_type_state(irtype, layout_fixed);
647 static ir_type *create_union_type(compound_type_t *type)
649 declaration_t *declaration = type->declaration;
650 symbol_t *symbol = declaration->symbol;
653 id = unique_ident(symbol->string);
655 id = unique_ident("__anonymous_union");
657 dbg_info *dbgi = get_dbg_info(&type->type.source_position);
658 ir_type *irtype = new_d_type_union(id, dbgi);
660 type->type.firm_type = irtype;
664 declaration_t *entry = declaration->scope.declarations;
665 for( ; entry != NULL; entry = entry->next) {
666 if(entry->namespc != NAMESPACE_NORMAL)
669 ident *ident = new_id_from_str(entry->symbol->string);
670 ir_type *entry_ir_type = get_ir_type(entry->type);
672 int entry_size = get_type_size_bytes(entry_ir_type);
673 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
675 dbg_info *const dbgi = get_dbg_info(&entry->source_position);
676 ir_entity *const entity = new_d_entity(irtype, ident, entry_ir_type,
678 add_union_member(irtype, entity);
679 set_entity_offset(entity, 0);
680 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
681 entry->v.entity = entity;
683 if(entry_size > size) {
686 if(entry_alignment > align_all) {
687 if(entry_alignment % align_all != 0) {
688 panic("Uneven alignments not supported yet");
690 align_all = entry_alignment;
694 set_type_alignment_bytes(irtype, align_all);
695 set_type_size_bytes(irtype, size);
696 set_type_state(irtype, layout_fixed);
701 static ir_node *expression_to_firm(const expression_t *expression);
702 static inline ir_mode *get_ir_mode(type_t *type);
704 static ir_type *create_enum_type(enum_type_t *const type)
706 type->type.firm_type = ir_type_int;
708 ir_mode *const mode = get_ir_mode((type_t*) type);
709 tarval *const one = get_mode_one(mode);
710 tarval * tv_next = get_tarval_null(mode);
712 declaration_t *declaration = type->declaration->next;
713 for (; declaration != NULL; declaration = declaration->next) {
714 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
717 declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
719 expression_t *const init = declaration->init.enum_value;
721 ir_node *const cnst = expression_to_firm(init);
722 if (!is_Const(cnst)) {
723 panic("couldn't fold constant");
725 tv_next = get_Const_tarval(cnst);
727 declaration->v.enum_val = tv_next;
728 tv_next = tarval_add(tv_next, one);
734 static ir_type *get_ir_type(type_t *type)
736 assert(type != NULL);
738 type = skip_typeref(type);
740 if(type->base.firm_type != NULL) {
741 assert(type->base.firm_type != INVALID_TYPE);
742 return type->base.firm_type;
745 ir_type *firm_type = NULL;
748 panic("error type occured");
750 firm_type = create_atomic_type(&type->atomic);
753 firm_type = create_method_type(&type->function);
756 firm_type = create_pointer_type(&type->pointer);
759 firm_type = create_array_type(&type->array);
761 case TYPE_COMPOUND_STRUCT:
762 firm_type = create_struct_type(&type->compound);
764 case TYPE_COMPOUND_UNION:
765 firm_type = create_union_type(&type->compound);
768 firm_type = create_enum_type(&type->enumt);
771 firm_type = get_ir_type(type->builtin.real_type);
774 firm_type = create_bitfield_type(&type->bitfield);
782 if(firm_type == NULL)
783 panic("unknown type found");
785 type->base.firm_type = firm_type;
789 static inline ir_mode *get_ir_mode(type_t *type)
791 ir_type *irtype = get_ir_type(type);
793 /* firm doesn't report a mode for arrays somehow... */
794 if(is_Array_type(irtype)) {
798 ir_mode *mode = get_type_mode(irtype);
799 assert(mode != NULL);
803 static ident *predef_idents[rts_max];
805 /** Names of the runtime functions. */
806 static const struct {
807 int id; /**< the rts id */
808 int n_res; /**< number of return values */
809 const char *name; /**< the name of the rts function */
810 int n_params; /**< number of parameters */
811 unsigned flags; /**< language flags */
813 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
814 { rts_abort, 0, "abort", 0, _C89 },
815 { rts_abs, 1, "abs", 1, _C89 },
816 { rts_labs, 1, "labs", 1, _C89 },
817 { rts_llabs, 1, "llabs", 1, _C99 },
818 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
820 { rts_fabs, 1, "fabs", 1, _C89 },
821 { rts_sqrt, 1, "sqrt", 1, _C89 },
822 { rts_cbrt, 1, "cbrt", 1, _C99 },
823 { rts_exp, 1, "exp", 1, _C89 },
824 { rts_exp2, 1, "exp2", 1, _C89 },
825 { rts_exp10, 1, "exp10", 1, _GNUC },
826 { rts_log, 1, "log", 1, _C89 },
827 { rts_log2, 1, "log2", 1, _C89 },
828 { rts_log10, 1, "log10", 1, _C89 },
829 { rts_pow, 1, "pow", 2, _C89 },
830 { rts_sin, 1, "sin", 1, _C89 },
831 { rts_cos, 1, "cos", 1, _C89 },
832 { rts_tan, 1, "tan", 1, _C89 },
833 { rts_asin, 1, "asin", 1, _C89 },
834 { rts_acos, 1, "acos", 1, _C89 },
835 { rts_atan, 1, "atan", 1, _C89 },
836 { rts_sinh, 1, "sinh", 1, _C89 },
837 { rts_cosh, 1, "cosh", 1, _C89 },
838 { rts_tanh, 1, "tanh", 1, _C89 },
840 { rts_fabsf, 1, "fabsf", 1, _C99 },
841 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
842 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
843 { rts_expf, 1, "expf", 1, _C99 },
844 { rts_exp2f, 1, "exp2f", 1, _C99 },
845 { rts_exp10f, 1, "exp10f", 1, _GNUC },
846 { rts_logf, 1, "logf", 1, _C99 },
847 { rts_log2f, 1, "log2f", 1, _C99 },
848 { rts_log10f, 1, "log10f", 1, _C99 },
849 { rts_powf, 1, "powf", 2, _C99 },
850 { rts_sinf, 1, "sinf", 1, _C99 },
851 { rts_cosf, 1, "cosf", 1, _C99 },
852 { rts_tanf, 1, "tanf", 1, _C99 },
853 { rts_asinf, 1, "asinf", 1, _C99 },
854 { rts_acosf, 1, "acosf", 1, _C99 },
855 { rts_atanf, 1, "atanf", 1, _C99 },
856 { rts_sinhf, 1, "sinhf", 1, _C99 },
857 { rts_coshf, 1, "coshf", 1, _C99 },
858 { rts_tanhf, 1, "tanhf", 1, _C99 },
860 { rts_fabsl, 1, "fabsl", 1, _C99 },
861 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
862 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
863 { rts_expl, 1, "expl", 1, _C99 },
864 { rts_exp2l, 1, "exp2l", 1, _C99 },
865 { rts_exp10l, 1, "exp10l", 1, _GNUC },
866 { rts_logl, 1, "logl", 1, _C99 },
867 { rts_log2l, 1, "log2l", 1, _C99 },
868 { rts_log10l, 1, "log10l", 1, _C99 },
869 { rts_powl, 1, "powl", 2, _C99 },
870 { rts_sinl, 1, "sinl", 1, _C99 },
871 { rts_cosl, 1, "cosl", 1, _C99 },
872 { rts_tanl, 1, "tanl", 1, _C99 },
873 { rts_asinl, 1, "asinl", 1, _C99 },
874 { rts_acosl, 1, "acosl", 1, _C99 },
875 { rts_atanl, 1, "atanl", 1, _C99 },
876 { rts_sinhl, 1, "sinhl", 1, _C99 },
877 { rts_coshl, 1, "coshl", 1, _C99 },
878 { rts_tanhl, 1, "tanhl", 1, _C99 },
880 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
881 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
882 { rts_strcmp, 1, "strcmp", 2, _C89 },
883 { rts_strncmp, 1, "strncmp", 3, _C89 }
886 static ir_entity* get_function_entity(declaration_t *declaration)
888 if(declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
889 return declaration->v.entity;
890 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
892 symbol_t *symbol = declaration->symbol;
893 ident *id = new_id_from_str(symbol->string);
895 ir_type *global_type = get_glob_type();
896 ir_type *ir_type_method = get_ir_type(declaration->type);
897 assert(is_Method_type(ir_type_method));
899 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
900 ir_entity *const entity = new_d_entity(global_type, id, ir_type_method, dbgi);
901 set_entity_ld_ident(entity, id);
902 if(declaration->storage_class == STORAGE_CLASS_STATIC
903 || declaration->is_inline) {
904 set_entity_visibility(entity, visibility_local);
905 } else if(declaration->init.statement != NULL) {
906 set_entity_visibility(entity, visibility_external_visible);
908 set_entity_visibility(entity, visibility_external_allocated);
910 /* We should check for file scope here, but as long as we compile C only
911 this is not needed. */
912 int n_params = get_method_n_params(ir_type_method);
913 int n_res = get_method_n_ress(ir_type_method);
916 if (n_params == 0 && n_res == 0 && id == predef_idents[rts_abort]) {
917 /* found abort(), store for later */
921 if (! firm_opt.freestanding) {
922 /* check for a known runtime function */
923 for (i = 0; i < rts_max; ++i) {
924 /* ignore those rts functions not necessary needed for current mode */
925 if ((c_mode & rts_data[i].flags) == 0)
927 if (n_params == rts_data[i].n_params && n_res == rts_data[i].n_res &&
928 id == predef_idents[rts_data[i].id])
929 rts_entities[rts_data[i].id] = entity;
934 set_entity_allocation(entity, allocation_static);
936 declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
937 declaration->v.entity = entity;
942 static ir_node *const_to_firm(const const_expression_t *cnst)
944 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
945 ir_mode *mode = get_ir_mode(cnst->base.type);
950 if(mode_is_float(mode)) {
951 tv = new_tarval_from_double(cnst->v.float_value, mode);
953 if(mode_is_signed(mode)) {
954 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
956 len = snprintf(buf, sizeof(buf), "%llu",
957 (unsigned long long) cnst->v.int_value);
959 tv = new_tarval_from_str(buf, len, mode);
962 return new_d_Const(dbgi, mode, tv);
965 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
968 assert(entity != NULL);
969 union symconst_symbol sym;
970 sym.entity_p = entity;
971 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
974 static ir_node *string_to_firm(const source_position_t *const src_pos,
975 const char *const id_prefix,
976 const string_t *const value)
978 ir_type *const global_type = get_glob_type();
979 dbg_info *const dbgi = get_dbg_info(src_pos);
980 ir_type *const type = new_d_type_array(unique_ident("strtype"), 1,
981 ir_type_const_char, dbgi);
983 ident *const id = unique_ident(id_prefix);
984 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
985 set_entity_ld_ident(entity, id);
986 set_entity_variability(entity, variability_constant);
987 set_entity_allocation(entity, allocation_static);
989 ir_type *const elem_type = ir_type_const_char;
990 ir_mode *const mode = get_type_mode(elem_type);
992 const char* const string = value->begin;
993 const size_t slen = value->size;
995 set_array_lower_bound_int(type, 0, 0);
996 set_array_upper_bound_int(type, 0, slen);
997 set_type_size_bytes(type, slen);
998 set_type_state(type, layout_fixed);
1000 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1001 for(size_t i = 0; i < slen; ++i) {
1002 tvs[i] = new_tarval_from_long(string[i], mode);
1005 set_array_entity_values(entity, tvs, slen);
1008 return create_symconst(dbgi, mode_P_data, entity);
1011 static ir_node *string_literal_to_firm(
1012 const string_literal_expression_t* literal)
1014 return string_to_firm(&literal->base.source_position, "Lstr",
1018 static ir_node *wide_string_literal_to_firm(
1019 const wide_string_literal_expression_t* const literal)
1021 ir_type *const global_type = get_glob_type();
1022 ir_type *const elem_type = ir_type_wchar_t;
1023 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1024 ir_type *const type = new_d_type_array(unique_ident("strtype"), 1,
1027 ident *const id = unique_ident("Lstr");
1028 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1029 set_entity_ld_ident(entity, id);
1030 set_entity_variability(entity, variability_constant);
1031 set_entity_allocation(entity, allocation_static);
1033 ir_mode *const mode = get_type_mode(elem_type);
1035 const wchar_rep_t *const string = literal->value.begin;
1036 const size_t slen = literal->value.size;
1038 set_array_lower_bound_int(type, 0, 0);
1039 set_array_upper_bound_int(type, 0, slen);
1040 set_type_size_bytes(type, slen);
1041 set_type_state(type, layout_fixed);
1043 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1044 for(size_t i = 0; i < slen; ++i) {
1045 tvs[i] = new_tarval_from_long(string[i], mode);
1048 set_array_entity_values(entity, tvs, slen);
1051 return create_symconst(dbgi, mode_P_data, entity);
1054 static ir_node *deref_address(ir_type *const irtype, ir_node *const addr,
1055 dbg_info *const dbgi)
1057 if (is_compound_type(irtype) ||
1058 is_Method_type(irtype) ||
1059 is_Array_type(irtype)) {
1063 ir_mode *const mode = get_type_mode(irtype);
1064 ir_node *const memory = get_store();
1065 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1066 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1067 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1068 set_store(load_mem);
1072 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1074 ir_mode *mode = get_irn_mode(node);
1076 if(!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1078 if(!mode_is_float(mode))
1081 /* check if there is already a Conv */
1082 if (get_irn_op(node) == op_Conv) {
1083 /* convert it into a strict Conv */
1084 set_Conv_strict(node, 1);
1088 /* otherwise create a new one */
1089 return new_d_strictConv(dbgi, node, mode);
1092 static ir_node *get_global_var_address(dbg_info *const dbgi,
1093 const declaration_t *const decl)
1095 assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1097 ir_entity *const entity = decl->v.entity;
1098 switch ((storage_class_tag_t)decl->storage_class) {
1099 case STORAGE_CLASS_THREAD:
1100 case STORAGE_CLASS_THREAD_EXTERN:
1101 case STORAGE_CLASS_THREAD_STATIC: {
1102 ir_node *const no_mem = new_NoMem();
1103 ir_node *const tls = get_irg_tls(current_ir_graph);
1104 return new_d_simpleSel(dbgi, no_mem, tls, entity);
1108 return create_symconst(dbgi, mode_P_data, entity);
1112 /* Returns the correct base address depending on whether it is a parameter or a
1113 * normal local variable */
1114 static ir_node *get_local_frame(ir_entity *const ent)
1116 ir_graph *const irg = current_ir_graph;
1117 const ir_type *const owner = get_entity_owner(ent);
1118 if (owner == get_irg_frame_type(irg)) {
1119 return get_irg_frame(irg);
1121 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1122 return get_irg_value_param_base(irg);
1126 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1128 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1129 declaration_t *declaration = ref->declaration;
1130 type_t *type = skip_typeref(declaration->type);
1132 switch((declaration_kind_t) declaration->declaration_kind) {
1133 case DECLARATION_KIND_UNKNOWN:
1134 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) {
1140 case DECLARATION_KIND_ENUM_ENTRY: {
1141 ir_mode *const mode = get_ir_mode(type);
1142 return new_Const(mode, declaration->v.enum_val);
1145 case DECLARATION_KIND_LOCAL_VARIABLE: {
1146 ir_mode *const mode = get_ir_mode(type);
1147 return get_value(declaration->v.value_number, mode);
1149 case DECLARATION_KIND_FUNCTION: {
1150 ir_mode *const mode = get_ir_mode(type);
1151 return create_symconst(dbgi, mode, declaration->v.entity);
1153 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1154 ir_node *const addr = get_global_var_address(dbgi, declaration);
1155 ir_type *const irtype = get_entity_type(declaration->v.entity);
1156 return deref_address(irtype, addr, dbgi);
1159 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1160 ir_entity *entity = declaration->v.entity;
1161 ir_node *frame = get_local_frame(entity);
1162 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1163 ir_type *irtype = get_entity_type(entity);
1164 return deref_address(irtype, sel, dbgi);
1167 case DECLARATION_KIND_COMPOUND_MEMBER:
1168 case DECLARATION_KIND_LABEL_BLOCK:
1169 panic("not implemented reference type");
1172 panic("reference to declaration with unknown type found");
1175 static ir_node *reference_addr(const reference_expression_t *ref)
1177 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1178 declaration_t *declaration = ref->declaration;
1180 switch((declaration_kind_t) declaration->declaration_kind) {
1181 case DECLARATION_KIND_UNKNOWN:
1183 case DECLARATION_KIND_LOCAL_VARIABLE:
1184 panic("local variable without entity has no address");
1185 case DECLARATION_KIND_FUNCTION: {
1186 type_t *const type = skip_typeref(ref->base.type);
1187 ir_mode *const mode = get_ir_mode(type);
1188 return create_symconst(dbgi, mode, declaration->v.entity);
1190 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1191 ir_node *const addr = get_global_var_address(dbgi, declaration);
1194 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1195 ir_entity *entity = declaration->v.entity;
1196 ir_node *frame = get_local_frame(entity);
1197 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1202 case DECLARATION_KIND_ENUM_ENTRY:
1203 panic("trying to reference enum entry");
1205 case DECLARATION_KIND_COMPOUND_MEMBER:
1206 case DECLARATION_KIND_LABEL_BLOCK:
1207 panic("not implemented reference type");
1210 panic("reference to declaration with unknown type found");
1213 static ir_node *process_builtin_call(const call_expression_t *call)
1215 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1217 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1218 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1220 type_t *type = skip_typeref(builtin->base.type);
1221 assert(is_type_pointer(type));
1223 type_t *function_type = skip_typeref(type->pointer.points_to);
1224 symbol_t *symbol = builtin->symbol;
1226 switch(symbol->ID) {
1227 case T___builtin_alloca: {
1228 if(call->arguments == NULL || call->arguments->next != NULL) {
1229 panic("invalid number of parameters on __builtin_alloca");
1231 expression_t *argument = call->arguments->expression;
1232 ir_node *size = expression_to_firm(argument);
1234 ir_node *store = get_store();
1235 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1237 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1239 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1243 case T___builtin_nan:
1244 case T___builtin_nanf:
1245 case T___builtin_nand: {
1246 /* Ignore string for now... */
1247 assert(is_type_function(function_type));
1248 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1249 tarval *tv = get_mode_NAN(mode);
1250 ir_node *res = new_d_Const(dbgi, mode, tv);
1253 case T___builtin_va_end:
1256 panic("Unsupported builtin found\n");
1260 static ir_node *call_expression_to_firm(const call_expression_t *call)
1262 assert(get_cur_block() != NULL);
1264 expression_t *function = call->function;
1265 if(function->kind == EXPR_BUILTIN_SYMBOL) {
1266 return process_builtin_call(call);
1268 ir_node *callee = expression_to_firm(function);
1270 type_t *type = skip_typeref(function->base.type);
1271 assert(is_type_pointer(type));
1272 pointer_type_t *pointer_type = &type->pointer;
1273 type_t *points_to = skip_typeref(pointer_type->points_to);
1274 assert(is_type_function(points_to));
1275 function_type_t *function_type = &points_to->function;
1277 int n_parameters = 0;
1278 call_argument_t *argument = call->arguments;
1279 for( ; argument != NULL; argument = argument->next) {
1283 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1285 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1286 ir_type *new_method_type = NULL;
1287 if(function_type->variadic || function_type->unspecified_parameters) {
1288 /* we need to construct a new method type matching the call
1290 int n_res = get_method_n_ress(ir_method_type);
1291 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1292 new_method_type = new_d_type_method(unique_ident("calltype"),
1293 n_parameters, n_res, dbgi);
1294 set_method_calling_convention(new_method_type,
1295 get_method_calling_convention(ir_method_type));
1296 set_method_additional_properties(new_method_type,
1297 get_method_additional_properties(ir_method_type));
1299 for(int i = 0; i < n_res; ++i) {
1300 set_method_res_type(new_method_type, i,
1301 get_method_res_type(ir_method_type, i));
1304 ir_node *in[n_parameters];
1306 argument = call->arguments;
1308 for( ; argument != NULL; argument = argument->next) {
1309 expression_t *expression = argument->expression;
1310 ir_node *arg_node = expression_to_firm(expression);
1312 arg_node = do_strict_conv(dbgi, arg_node);
1315 if(new_method_type != NULL) {
1316 ir_type *irtype = get_ir_type(expression->base.type);
1317 set_method_param_type(new_method_type, n, irtype);
1322 assert(n == n_parameters);
1324 if(new_method_type != NULL)
1325 ir_method_type = new_method_type;
1327 ir_node *store = get_store();
1328 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1330 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1333 type_t *return_type = skip_typeref(function_type->return_type);
1334 ir_node *result = NULL;
1336 if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1338 if(is_type_scalar(return_type)) {
1339 mode = get_ir_mode(return_type);
1343 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1344 result = new_d_Proj(dbgi, resproj, mode, 0);
1350 static void statement_to_firm(statement_t *statement);
1351 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1353 static ir_node *expression_to_addr(const expression_t *expression);
1354 static void create_condition_evaluation(const expression_t *expression,
1355 ir_node *true_block,
1356 ir_node *false_block);
1358 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1361 value = do_strict_conv(dbgi, value);
1363 ir_node *memory = get_store();
1365 if(is_type_scalar(type)) {
1366 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1367 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1368 set_store(store_mem);
1370 ir_type *irtype = get_ir_type(type);
1371 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1372 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1373 set_store(copyb_mem);
1377 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1379 tarval *all_one = get_mode_all_one(mode);
1380 int mode_size = get_mode_size_bits(mode);
1382 assert(offset >= 0 && size >= 0);
1383 assert(offset + size <= mode_size);
1384 if(size == mode_size) {
1388 long shiftr = get_mode_size_bits(mode) - size;
1389 long shiftl = offset;
1390 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1391 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1392 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1393 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1398 static void bitfield_store_to_firm(const unary_expression_t *expression,
1401 expression_t *select = expression->value;
1402 assert(select->kind == EXPR_SELECT);
1403 type_t *type = select->base.type;
1404 assert(type->kind == TYPE_BITFIELD);
1405 ir_mode *mode = get_ir_mode(type->bitfield.base);
1406 ir_node *addr = expression_to_addr(select);
1408 assert(get_irn_mode(value) == mode);
1410 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1412 /* kill upper bits of value and shift to right position */
1413 ir_entity *entity = select->select.compound_entry->v.entity;
1414 int bitoffset = get_entity_offset_bits_remainder(entity);
1415 ir_type *entity_type = get_entity_type(entity);
1416 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1418 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1419 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1420 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1421 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1422 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1423 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1425 /* load current value */
1426 ir_node *mem = get_store();
1427 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1428 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1429 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1430 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1431 tarval *inv_mask = tarval_not(shift_mask);
1432 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1433 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1435 /* construct new value and store */
1436 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1437 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1438 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1439 set_store(store_mem);
1442 static void set_value_for_expression(const expression_t *expression,
1445 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1446 value = do_strict_conv(dbgi, value);
1448 if(expression->kind == EXPR_REFERENCE) {
1449 const reference_expression_t *ref = &expression->reference;
1451 declaration_t *declaration = ref->declaration;
1452 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1453 if(declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1454 set_value(declaration->v.value_number, value);
1459 if(expression->kind == EXPR_UNARY_BITFIELD_EXTRACT) {
1460 bitfield_store_to_firm(&expression->unary, value);
1464 ir_node *addr = expression_to_addr(expression);
1465 type_t *type = skip_typeref(expression->base.type);
1466 assign_value(dbgi, addr, type, value);
1469 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1471 ir_mode *value_mode = get_irn_mode(value);
1473 if (value_mode == dest_mode || is_Bad(value))
1476 if(dest_mode == mode_b) {
1477 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1478 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1479 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1483 return new_d_Conv(dbgi, value, dest_mode);
1486 static ir_node *create_incdec(const unary_expression_t *expression)
1488 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1489 type_t *type = skip_typeref(expression->base.type);
1490 ir_mode *mode = get_ir_mode(type);
1491 expression_t *value = expression->value;
1493 ir_node *value_node = expression_to_firm(value);
1496 if(is_type_pointer(type)) {
1497 pointer_type_t *pointer_type = &type->pointer;
1498 unsigned elem_size = get_type_size(pointer_type->points_to);
1499 offset = new_Const_long(mode_int, elem_size);
1501 assert(is_type_arithmetic(type));
1502 offset = new_Const(mode, get_mode_one(mode));
1505 switch(expression->base.kind) {
1506 case EXPR_UNARY_POSTFIX_INCREMENT: {
1507 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1508 set_value_for_expression(value, new_value);
1511 case EXPR_UNARY_POSTFIX_DECREMENT: {
1512 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1513 set_value_for_expression(value, new_value);
1516 case EXPR_UNARY_PREFIX_INCREMENT: {
1517 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1518 set_value_for_expression(value, new_value);
1521 case EXPR_UNARY_PREFIX_DECREMENT: {
1522 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1523 set_value_for_expression(value, new_value);
1527 panic("no incdec expr in create_incdec");
1532 static bool is_local_variable(expression_t *expression)
1534 if (expression->kind != EXPR_REFERENCE)
1536 reference_expression_t *ref_expr = &expression->reference;
1537 declaration_t *declaration = ref_expr->declaration;
1538 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
1541 static pn_Cmp get_pnc(const expression_kind_t kind)
1544 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1545 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1546 case EXPR_BINARY_NOTEQUAL: return pn_Cmp_Ne;
1547 case EXPR_BINARY_ISLESS:
1548 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
1549 case EXPR_BINARY_ISLESSEQUAL:
1550 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
1551 case EXPR_BINARY_ISGREATER:
1552 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
1553 case EXPR_BINARY_ISGREATEREQUAL:
1554 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
1555 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
1560 panic("trying to get pn_Cmp from non-comparison binexpr type");
1564 * Handle the assume optimizer hint: check if a Confirm
1565 * node can be created.
1567 * @param dbi debug info
1568 * @param expr the IL assume expression
1570 * we support here only some simple cases:
1575 static ir_node *handle_assume_compare(dbg_info *dbi,
1576 const binary_expression_t *expression)
1578 expression_t *op1 = expression->left;
1579 expression_t *op2 = expression->right;
1580 declaration_t *var2, *var = NULL;
1581 ir_node *res = NULL;
1584 cmp_val = get_pnc(expression->base.kind);
1586 if (is_local_variable(op1) && is_local_variable(op2)) {
1587 var = op1->reference.declaration;
1588 var2 = op2->reference.declaration;
1590 type_t *const type = skip_typeref(var->type);
1591 ir_mode *const mode = get_ir_mode(type);
1593 ir_node *const irn1 = get_value(var->v.value_number, mode);
1594 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1596 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1597 set_value(var2->v.value_number, res);
1599 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
1600 set_value(var->v.value_number, res);
1606 if (is_local_variable(op1) && is_constant_expression(op2)) {
1607 var = op1->reference.declaration;
1609 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
1610 cmp_val = get_inversed_pnc(cmp_val);
1611 var = op2->reference.declaration;
1616 type_t *const type = skip_typeref(var->type);
1617 ir_mode *const mode = get_ir_mode(type);
1619 res = get_value(var->v.value_number, mode);
1620 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
1621 set_value(var->v.value_number, res);
1627 * Handle the assume optimizer hint.
1629 * @param dbi debug info
1630 * @param expr the IL assume expression
1632 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
1633 switch(expression->kind) {
1634 case EXPR_BINARY_EQUAL:
1635 case EXPR_BINARY_NOTEQUAL:
1636 case EXPR_BINARY_LESS:
1637 case EXPR_BINARY_LESSEQUAL:
1638 case EXPR_BINARY_GREATER:
1639 case EXPR_BINARY_GREATEREQUAL:
1640 return handle_assume_compare(dbi, &expression->binary);
1646 static ir_node *bitfield_extract_to_firm(const unary_expression_t *expression)
1648 expression_t *select = expression->value;
1649 assert(select->kind == EXPR_SELECT);
1651 type_t *type = select->base.type;
1652 assert(type->kind == TYPE_BITFIELD);
1653 ir_mode *mode = get_ir_mode(type->bitfield.base);
1654 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1655 ir_node *addr = expression_to_addr(select);
1656 ir_node *mem = get_store();
1657 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1658 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1659 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1661 load_res = create_conv(dbgi, load_res, mode_int);
1663 set_store(load_mem);
1665 /* kill upper bits */
1666 ir_entity *entity = select->select.compound_entry->v.entity;
1667 int bitoffset = get_entity_offset_bits_remainder(entity);
1668 ir_type *entity_type = get_entity_type(entity);
1669 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1670 long shift_bitsl = machine_size - bitoffset - bitsize;
1671 assert(shift_bitsl >= 0);
1672 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1673 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1674 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1676 long shift_bitsr = bitoffset + shift_bitsl;
1677 assert(shift_bitsr <= (long) machine_size);
1678 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1679 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1681 if(mode_is_signed(mode)) {
1682 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1684 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1687 return create_conv(dbgi, shiftr, mode);
1690 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
1692 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1693 type_t *type = skip_typeref(expression->base.type);
1695 if(expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
1696 return expression_to_addr(expression->value);
1698 const expression_t *value = expression->value;
1700 switch(expression->base.kind) {
1701 case EXPR_UNARY_NEGATE: {
1702 ir_node *value_node = expression_to_firm(value);
1703 ir_mode *mode = get_ir_mode(type);
1704 return new_d_Minus(dbgi, value_node, mode);
1706 case EXPR_UNARY_PLUS:
1707 return expression_to_firm(value);
1708 case EXPR_UNARY_BITWISE_NEGATE: {
1709 ir_node *value_node = expression_to_firm(value);
1710 ir_mode *mode = get_ir_mode(type);
1711 return new_d_Not(dbgi, value_node, mode);
1713 case EXPR_UNARY_NOT: {
1714 ir_node *value_node = expression_to_firm(value);
1715 ir_mode *mode = get_ir_mode(type);
1716 if(get_irn_mode(value_node) != mode_b) {
1717 value_node = create_conv(dbgi, value_node, mode_b);
1719 value_node = new_d_Not(dbgi, value_node, mode_b);
1720 if(mode != mode_b) {
1721 value_node = create_conv(dbgi, value_node, mode);
1725 case EXPR_UNARY_DEREFERENCE: {
1726 ir_node *value_node = expression_to_firm(value);
1727 type_t *value_type = skip_typeref(value->base.type);
1728 ir_type *irtype = get_ir_type(value_type);
1729 assert(is_Pointer_type(irtype));
1730 ir_type *points_to = get_pointer_points_to_type(irtype);
1731 return deref_address(points_to, value_node, dbgi);
1733 case EXPR_UNARY_POSTFIX_INCREMENT:
1734 case EXPR_UNARY_POSTFIX_DECREMENT:
1735 case EXPR_UNARY_PREFIX_INCREMENT:
1736 case EXPR_UNARY_PREFIX_DECREMENT:
1737 return create_incdec(expression);
1738 case EXPR_UNARY_CAST: {
1739 ir_node *value_node = expression_to_firm(value);
1740 if(is_type_scalar(type)) {
1741 ir_mode *mode = get_ir_mode(type);
1742 ir_node *node = create_conv(dbgi, value_node, mode);
1743 node = do_strict_conv(dbgi, node);
1749 case EXPR_UNARY_CAST_IMPLICIT: {
1750 ir_node *value_node = expression_to_firm(value);
1751 if(is_type_scalar(type)) {
1752 ir_mode *mode = get_ir_mode(type);
1753 return create_conv(dbgi, value_node, mode);
1758 case EXPR_UNARY_ASSUME:
1759 if(firm_opt.confirm)
1760 return handle_assume(dbgi, value);
1763 case EXPR_UNARY_BITFIELD_EXTRACT:
1764 return bitfield_extract_to_firm(expression);
1769 panic("invalid UNEXPR type found");
1772 static ir_node *create_lazy_op(const binary_expression_t *expression)
1774 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1775 type_t *type = expression->base.type;
1776 ir_mode *mode = get_ir_mode(type);
1778 if(is_constant_expression(expression->left)) {
1779 long val = fold_constant(expression->left);
1780 expression_kind_t ekind = expression->base.kind;
1781 if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
1782 || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
1783 return expression_to_firm(expression->right);
1785 assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
1786 || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
1787 return new_Const(mode, get_mode_one(mode));
1791 ir_node *cur_block = get_cur_block();
1793 ir_node *one_block = new_immBlock();
1794 ir_node *one = new_Const(mode, get_mode_one(mode));
1795 ir_node *jmp_one = new_d_Jmp(dbgi);
1797 ir_node *zero_block = new_immBlock();
1798 ir_node *zero = new_Const(mode, get_mode_null(mode));
1799 ir_node *jmp_zero = new_d_Jmp(dbgi);
1801 set_cur_block(cur_block);
1802 create_condition_evaluation((const expression_t*) expression,
1803 one_block, zero_block);
1804 mature_immBlock(one_block);
1805 mature_immBlock(zero_block);
1807 ir_node *common_block = new_immBlock();
1808 add_immBlock_pred(common_block, jmp_one);
1809 add_immBlock_pred(common_block, jmp_zero);
1810 mature_immBlock(common_block);
1812 ir_node *in[2] = { one, zero };
1813 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1818 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
1819 ir_node *right, ir_mode *mode);
1821 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
1822 create_arithmetic_func func)
1824 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1825 ir_node *left = expression_to_firm(expression->left);
1826 ir_node *right = expression_to_firm(expression->right);
1827 type_t *type = expression->right->base.type;
1828 /* be careful with the modes, because in arithmetic assign nodes only
1829 * the right operand has the mode of the arithmetic already */
1830 ir_mode *mode = get_ir_mode(type);
1831 left = create_conv(dbgi, left, mode);
1832 ir_node *res = func(dbgi, left, right, mode);
1837 static ir_node *pointer_arithmetic(ir_node *const pointer,
1840 dbg_info *const dbgi,
1841 const create_arithmetic_func func)
1843 pointer_type_t *const pointer_type = &type->pointer;
1844 type_t *const points_to = pointer_type->points_to;
1845 const unsigned elem_size = get_type_size(points_to);
1847 assert(elem_size >= 1);
1848 if (elem_size > 1) {
1849 integer = create_conv(dbgi, integer, mode_int);
1850 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
1851 ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_int);
1855 ir_mode *const mode = get_ir_mode(type);
1856 return func(dbgi, pointer, integer, mode);
1859 static ir_node *create_arithmetic_assign_binop(
1860 const binary_expression_t *expression, create_arithmetic_func func)
1862 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1863 type_t *const type = skip_typeref(expression->base.type);
1866 if (is_type_pointer(type)) {
1867 ir_node *const pointer = expression_to_firm(expression->left);
1868 ir_node * integer = expression_to_firm(expression->right);
1869 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
1871 value = create_arithmetic_binop(expression, func);
1874 ir_mode *const mode = get_ir_mode(type);
1875 value = create_conv(dbgi, value, mode);
1876 set_value_for_expression(expression->left, value);
1881 static ir_node *create_add(const binary_expression_t *expression)
1883 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1884 ir_node *left = expression_to_firm(expression->left);
1885 ir_node *right = expression_to_firm(expression->right);
1886 type_t *type = expression->base.type;
1888 expression_t *expr_left = expression->left;
1889 expression_t *expr_right = expression->right;
1890 type_t *type_left = skip_typeref(expr_left->base.type);
1891 type_t *type_right = skip_typeref(expr_right->base.type);
1893 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1894 ir_mode *const mode = get_ir_mode(type);
1895 return new_d_Add(dbgi, left, right, mode);
1898 if (is_type_pointer(type_left)) {
1899 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
1901 assert(is_type_pointer(type_right));
1902 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
1906 static ir_node *create_sub(const binary_expression_t *expression)
1908 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1909 expression_t *const expr_left = expression->left;
1910 expression_t *const expr_right = expression->right;
1911 ir_node *const left = expression_to_firm(expr_left);
1912 ir_node *const right = expression_to_firm(expr_right);
1913 type_t *const type = expression->base.type;
1914 type_t *const type_left = skip_typeref(expr_left->base.type);
1915 type_t *const type_right = skip_typeref(expr_right->base.type);
1917 if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1918 ir_mode *const mode = get_ir_mode(type);
1919 return new_d_Sub(dbgi, left, right, mode);
1920 } else if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
1921 const pointer_type_t *const ptr_type = &type_left->pointer;
1922 const unsigned elem_size = get_type_size(ptr_type->points_to);
1923 ir_mode *const mode = get_ir_mode(type);
1924 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
1925 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
1926 ir_node *const no_mem = new_NoMem();
1927 ir_node *const div = new_d_Div(dbgi, no_mem, sub, cnst, mode,
1928 op_pin_state_floats);
1929 return new_d_Proj(dbgi, div, mode, pn_Div_res);
1932 assert(is_type_pointer(type_left));
1933 return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
1936 static ir_node *create_shift(const binary_expression_t *expression)
1938 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1939 ir_node *left = expression_to_firm(expression->left);
1940 ir_node *right = expression_to_firm(expression->right);
1941 type_t *type = expression->base.type;
1942 ir_mode *mode = get_ir_mode(type);
1944 /* firm always wants the shift count to be unsigned */
1945 right = create_conv(dbgi, right, mode_uint);
1949 switch(expression->base.kind) {
1950 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
1951 case EXPR_BINARY_SHIFTLEFT:
1952 res = new_d_Shl(dbgi, left, right, mode);
1954 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
1955 case EXPR_BINARY_SHIFTRIGHT: {
1956 expression_t *expr_left = expression->left;
1957 type_t *type_left = skip_typeref(expr_left->base.type);
1959 if(is_type_signed(type_left)) {
1960 res = new_d_Shrs(dbgi, left, right, mode);
1962 res = new_d_Shr(dbgi, left, right, mode);
1967 panic("create shift op called for non-shift op");
1974 static ir_node *create_divmod(const binary_expression_t *expression)
1976 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1977 ir_node *left = expression_to_firm(expression->left);
1978 ir_node *right = expression_to_firm(expression->right);
1979 ir_node *pin = new_Pin(new_NoMem());
1980 /* be careful with the modes, because in arithmetic assign nodes only
1981 * the right operand has the mode of the arithmetic already */
1982 type_t *type = expression->right->base.type;
1983 ir_mode *mode = get_ir_mode(type);
1984 left = create_conv(dbgi, left, mode);
1988 switch (expression->base.kind) {
1989 case EXPR_BINARY_DIV:
1990 case EXPR_BINARY_DIV_ASSIGN:
1991 if(mode_is_float(mode)) {
1992 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
1993 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
1995 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
1996 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2000 case EXPR_BINARY_MOD:
2001 case EXPR_BINARY_MOD_ASSIGN:
2002 assert(!mode_is_float(mode));
2003 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
2004 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2007 default: panic("unexpected binary expression type in create_divmod()");
2013 static ir_node *create_arithmetic_assign_divmod(
2014 const binary_expression_t *expression)
2016 ir_node * value = create_divmod(expression);
2017 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2018 type_t *const type = expression->base.type;
2019 ir_mode *const mode = get_ir_mode(type);
2021 assert(type->kind != TYPE_POINTER);
2023 value = create_conv(dbgi, value, mode);
2024 set_value_for_expression(expression->left, value);
2029 static ir_node *create_arithmetic_assign_shift(
2030 const binary_expression_t *expression)
2032 ir_node * value = create_shift(expression);
2033 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2034 type_t *const type = expression->base.type;
2035 ir_mode *const mode = get_ir_mode(type);
2037 value = create_conv(dbgi, value, mode);
2038 set_value_for_expression(expression->left, value);
2043 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2045 expression_kind_t kind = expression->base.kind;
2048 case EXPR_BINARY_EQUAL:
2049 case EXPR_BINARY_NOTEQUAL:
2050 case EXPR_BINARY_LESS:
2051 case EXPR_BINARY_LESSEQUAL:
2052 case EXPR_BINARY_GREATER:
2053 case EXPR_BINARY_GREATEREQUAL:
2054 case EXPR_BINARY_ISGREATER:
2055 case EXPR_BINARY_ISGREATEREQUAL:
2056 case EXPR_BINARY_ISLESS:
2057 case EXPR_BINARY_ISLESSEQUAL:
2058 case EXPR_BINARY_ISLESSGREATER:
2059 case EXPR_BINARY_ISUNORDERED: {
2060 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2061 ir_node *left = expression_to_firm(expression->left);
2062 ir_node *right = expression_to_firm(expression->right);
2063 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2064 long pnc = get_pnc(kind);
2065 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2068 case EXPR_BINARY_ASSIGN: {
2069 ir_node *right = expression_to_firm(expression->right);
2070 set_value_for_expression(expression->left, right);
2074 case EXPR_BINARY_ADD:
2075 return create_add(expression);
2076 case EXPR_BINARY_SUB:
2077 return create_sub(expression);
2078 case EXPR_BINARY_MUL:
2079 return create_arithmetic_binop(expression, new_d_Mul);
2080 case EXPR_BINARY_BITWISE_AND:
2081 return create_arithmetic_binop(expression, new_d_And);
2082 case EXPR_BINARY_BITWISE_OR:
2083 return create_arithmetic_binop(expression, new_d_Or);
2084 case EXPR_BINARY_BITWISE_XOR:
2085 return create_arithmetic_binop(expression, new_d_Eor);
2086 case EXPR_BINARY_SHIFTLEFT:
2087 case EXPR_BINARY_SHIFTRIGHT:
2088 return create_shift(expression);
2089 case EXPR_BINARY_DIV:
2090 case EXPR_BINARY_MOD:
2091 return create_divmod(expression);
2092 case EXPR_BINARY_LOGICAL_AND:
2093 case EXPR_BINARY_LOGICAL_OR:
2094 return create_lazy_op(expression);
2095 case EXPR_BINARY_COMMA:
2096 expression_to_firm(expression->left);
2097 return expression_to_firm(expression->right);
2098 case EXPR_BINARY_ADD_ASSIGN:
2099 return create_arithmetic_assign_binop(expression, new_d_Add);
2100 case EXPR_BINARY_SUB_ASSIGN:
2101 return create_arithmetic_assign_binop(expression, new_d_Sub);
2102 case EXPR_BINARY_MUL_ASSIGN:
2103 return create_arithmetic_assign_binop(expression, new_d_Mul);
2104 case EXPR_BINARY_DIV_ASSIGN:
2105 return create_arithmetic_assign_divmod(expression);
2106 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2107 return create_arithmetic_assign_binop(expression, new_d_And);
2108 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2109 return create_arithmetic_assign_binop(expression, new_d_Or);
2110 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2111 return create_arithmetic_assign_binop(expression, new_d_Eor);
2112 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2113 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2114 return create_arithmetic_assign_shift(expression);
2115 case EXPR_BINARY_BUILTIN_EXPECT:
2116 return expression_to_firm(expression->left);
2118 panic("TODO binexpr type");
2122 static ir_node *array_access_addr(const array_access_expression_t *expression)
2124 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2125 ir_node *base_addr = expression_to_firm(expression->array_ref);
2126 ir_node *offset = expression_to_firm(expression->index);
2127 offset = create_conv(dbgi, offset, mode_uint);
2129 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2130 assert(is_type_pointer(ref_type));
2131 pointer_type_t *pointer_type = &ref_type->pointer;
2133 unsigned elem_size = get_type_size(pointer_type->points_to);
2134 ir_node *elem_size_const = new_Const_long(mode_uint, elem_size);
2135 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2137 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2142 static ir_node *array_access_to_firm(
2143 const array_access_expression_t *expression)
2145 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2146 ir_node *addr = array_access_addr(expression);
2147 type_t *type = revert_automatic_type_conversion(
2148 (const expression_t*) expression);
2149 type = skip_typeref(type);
2150 ir_type *irtype = get_ir_type(type);
2152 return deref_address(irtype, addr, dbgi);
2156 * Transform a sizeof expression into Firm code.
2158 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2160 type_t *type = expression->type;
2162 type = expression->tp_expression->base.type;
2163 assert(type != NULL);
2166 ir_mode *const mode = get_ir_mode(expression->base.type);
2167 symconst_symbol sym;
2168 sym.type_p = get_ir_type(type);
2169 return new_SymConst(mode, sym, symconst_type_size);
2173 * Transform an alignof expression into Firm code.
2175 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2177 type_t *type = expression->type;
2179 /* beware: if expression is a variable reference, return the
2180 alignment of the variable. */
2181 const expression_t *tp_expression = expression->tp_expression;
2182 const declaration_t *declaration = expr_is_variable(tp_expression);
2183 if (declaration != NULL) {
2184 /* TODO: get the alignment of this variable. */
2186 type = tp_expression->base.type;
2187 assert(type != NULL);
2190 ir_mode *const mode = get_ir_mode(expression->base.type);
2191 symconst_symbol sym;
2192 sym.type_p = get_ir_type(type);
2193 return new_SymConst(mode, sym, symconst_type_align);
2196 static long fold_constant(const expression_t *expression)
2198 assert(is_constant_expression(expression));
2200 ir_graph *old_current_ir_graph = current_ir_graph;
2201 if(current_ir_graph == NULL) {
2202 current_ir_graph = get_const_code_irg();
2205 ir_node *cnst = expression_to_firm(expression);
2206 current_ir_graph = old_current_ir_graph;
2208 if(!is_Const(cnst)) {
2209 panic("couldn't fold constant\n");
2212 tarval *tv = get_Const_tarval(cnst);
2213 if(!tarval_is_long(tv)) {
2214 panic("result of constant folding is not integer\n");
2217 return get_tarval_long(tv);
2220 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2222 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2224 /* first try to fold a constant condition */
2225 if(is_constant_expression(expression->condition)) {
2226 long val = fold_constant(expression->condition);
2228 return expression_to_firm(expression->true_expression);
2230 return expression_to_firm(expression->false_expression);
2234 ir_node *cur_block = get_cur_block();
2236 /* create the true block */
2237 ir_node *true_block = new_immBlock();
2239 ir_node *true_val = expression_to_firm(expression->true_expression);
2240 ir_node *true_jmp = new_Jmp();
2242 /* create the false block */
2243 ir_node *false_block = new_immBlock();
2245 ir_node *false_val = expression_to_firm(expression->false_expression);
2246 ir_node *false_jmp = new_Jmp();
2248 /* create the condition evaluation */
2249 set_cur_block(cur_block);
2250 create_condition_evaluation(expression->condition, true_block, false_block);
2251 mature_immBlock(true_block);
2252 mature_immBlock(false_block);
2254 /* create the common block */
2255 ir_node *common_block = new_immBlock();
2256 add_immBlock_pred(common_block, true_jmp);
2257 add_immBlock_pred(common_block, false_jmp);
2258 mature_immBlock(common_block);
2260 /* TODO improve static semantics, so either both or no values are NULL */
2261 if (true_val == NULL || false_val == NULL)
2264 ir_node *in[2] = { true_val, false_val };
2265 ir_mode *mode = get_irn_mode(true_val);
2266 assert(get_irn_mode(false_val) == mode);
2267 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2272 static ir_node *select_addr(const select_expression_t *expression)
2274 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2276 ir_node *compound_addr = expression_to_firm(expression->compound);
2278 declaration_t *entry = expression->compound_entry;
2279 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2280 ir_entity *entity = entry->v.entity;
2282 assert(entity != NULL);
2284 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2289 static ir_node *select_to_firm(const select_expression_t *expression)
2291 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2292 ir_node *addr = select_addr(expression);
2293 type_t *type = revert_automatic_type_conversion(
2294 (const expression_t*) expression);
2295 type = skip_typeref(type);
2296 ir_type *irtype = get_ir_type(type);
2298 return deref_address(irtype, addr, dbgi);
2301 /* Values returned by __builtin_classify_type. */
2302 typedef enum gcc_type_class
2308 enumeral_type_class,
2311 reference_type_class,
2315 function_type_class,
2326 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2328 const type_t *const type = expr->type_expression->base.type;
2334 const atomic_type_t *const atomic_type = &type->atomic;
2335 switch (atomic_type->akind) {
2336 /* should not be reached */
2337 case ATOMIC_TYPE_INVALID:
2341 /* gcc cannot do that */
2342 case ATOMIC_TYPE_VOID:
2343 tc = void_type_class;
2346 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2347 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2348 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2349 case ATOMIC_TYPE_SHORT:
2350 case ATOMIC_TYPE_USHORT:
2351 case ATOMIC_TYPE_INT:
2352 case ATOMIC_TYPE_UINT:
2353 case ATOMIC_TYPE_LONG:
2354 case ATOMIC_TYPE_ULONG:
2355 case ATOMIC_TYPE_LONGLONG:
2356 case ATOMIC_TYPE_ULONGLONG:
2357 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2358 tc = integer_type_class;
2361 case ATOMIC_TYPE_FLOAT:
2362 case ATOMIC_TYPE_DOUBLE:
2363 case ATOMIC_TYPE_LONG_DOUBLE:
2364 tc = real_type_class;
2367 #ifdef PROVIDE_COMPLEX
2368 case ATOMIC_TYPE_FLOAT_COMPLEX:
2369 case ATOMIC_TYPE_DOUBLE_COMPLEX:
2370 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
2371 tc = complex_type_class;
2373 case ATOMIC_TYPE_FLOAT_IMAGINARY:
2374 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
2375 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
2376 tc = complex_type_class;
2381 panic("Unimplemented case in classify_type_to_firm().");
2386 case TYPE_ARRAY: /* gcc handles this as pointer */
2387 case TYPE_FUNCTION: /* gcc handles this as pointer */
2388 case TYPE_POINTER: tc = pointer_type_class; break;
2389 case TYPE_COMPOUND_STRUCT: tc = record_type_class; break;
2390 case TYPE_COMPOUND_UNION: tc = union_type_class; break;
2392 /* gcc handles this as integer */
2393 case TYPE_ENUM: tc = integer_type_class; break;
2396 panic("Unimplemented case in classify_type_to_firm().");
2399 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2400 ir_mode *const mode = mode_int;
2401 tarval *const tv = new_tarval_from_long(tc, mode);
2402 return new_d_Const(dbgi, mode, tv);
2405 static ir_node *function_name_to_firm(
2406 const string_literal_expression_t *const expr)
2408 if (current_function_name == NULL) {
2409 const source_position_t *const src_pos = &expr->base.source_position;
2410 const char *const name = current_function_decl->symbol->string;
2411 const string_t string = { name, strlen(name) + 1 };
2412 current_function_name = string_to_firm(src_pos, "__func__", &string);
2415 return current_function_name;
2418 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2420 statement_t *statement = expr->statement;
2422 assert(statement->kind == STATEMENT_COMPOUND);
2423 return compound_statement_to_firm(&statement->compound);
2426 static ir_node *va_start_expression_to_firm(
2427 const va_start_expression_t *const expr)
2429 ir_type *const method_type = get_ir_type(current_function_decl->type);
2430 int const n = get_method_n_params(method_type) - 1;
2431 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2432 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2433 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2434 ir_node *const no_mem = new_NoMem();
2435 ir_node *const arg_sel =
2436 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2438 size_t const parm_size = get_type_size(expr->parameter->type);
2439 ir_node *const cnst = new_Const_long(mode_uint, parm_size);
2440 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2441 set_value_for_expression(expr->ap, add);
2446 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2448 ir_type *const irtype = get_ir_type(expr->base.type);
2449 ir_node *const ap = expression_to_firm(expr->ap);
2450 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2451 ir_node *const res = deref_address(irtype, ap, dbgi);
2453 size_t const parm_size = get_type_size(expr->base.type);
2454 ir_node *const cnst = new_Const_long(mode_uint, parm_size);
2455 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2456 set_value_for_expression(expr->ap, add);
2461 static ir_node *dereference_addr(const unary_expression_t *const expression)
2463 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2464 return expression_to_firm(expression->value);
2467 static ir_node *expression_to_addr(const expression_t *expression)
2469 switch(expression->kind) {
2470 case EXPR_REFERENCE:
2471 return reference_addr(&expression->reference);
2472 case EXPR_ARRAY_ACCESS:
2473 return array_access_addr(&expression->array_access);
2475 return select_addr(&expression->select);
2477 return call_expression_to_firm(&expression->call);
2478 case EXPR_UNARY_DEREFERENCE: {
2479 return dereference_addr(&expression->unary);
2484 panic("trying to get address of non-lvalue");
2487 static ir_node *builtin_constant_to_firm(
2488 const builtin_constant_expression_t *expression)
2490 ir_mode *mode = get_ir_mode(expression->base.type);
2493 if (is_constant_expression(expression->value)) {
2498 return new_Const_long(mode, v);
2501 static ir_node *builtin_prefetch_to_firm(
2502 const builtin_prefetch_expression_t *expression)
2504 ir_node *adr = expression_to_firm(expression->adr);
2505 /* no Firm support for prefetch yet */
2510 static ir_node *_expression_to_firm(const expression_t *expression)
2512 switch(expression->kind) {
2514 return const_to_firm(&expression->conste);
2515 case EXPR_STRING_LITERAL:
2516 return string_literal_to_firm(&expression->string);
2517 case EXPR_WIDE_STRING_LITERAL:
2518 return wide_string_literal_to_firm(&expression->wide_string);
2519 case EXPR_REFERENCE:
2520 return reference_expression_to_firm(&expression->reference);
2522 return call_expression_to_firm(&expression->call);
2524 return unary_expression_to_firm(&expression->unary);
2526 return binary_expression_to_firm(&expression->binary);
2527 case EXPR_ARRAY_ACCESS:
2528 return array_access_to_firm(&expression->array_access);
2530 return sizeof_to_firm(&expression->typeprop);
2532 return alignof_to_firm(&expression->typeprop);
2533 case EXPR_CONDITIONAL:
2534 return conditional_to_firm(&expression->conditional);
2536 return select_to_firm(&expression->select);
2537 case EXPR_CLASSIFY_TYPE:
2538 return classify_type_to_firm(&expression->classify_type);
2540 case EXPR_PRETTY_FUNCTION:
2541 return function_name_to_firm(&expression->string);
2542 case EXPR_STATEMENT:
2543 return statement_expression_to_firm(&expression->statement);
2545 return va_start_expression_to_firm(&expression->va_starte);
2547 return va_arg_expression_to_firm(&expression->va_arge);
2549 case EXPR_BUILTIN_SYMBOL:
2550 panic("unimplemented expression found");
2551 case EXPR_BUILTIN_CONSTANT_P:
2552 return builtin_constant_to_firm(&expression->builtin_constant);
2553 case EXPR_BUILTIN_PREFETCH:
2554 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
2560 panic("invalid expression found");
2563 static ir_node *expression_to_firm(const expression_t *expression)
2565 ir_node *res = _expression_to_firm(expression);
2567 if(res != NULL && get_irn_mode(res) == mode_b) {
2568 ir_mode *mode = get_ir_mode(expression->base.type);
2569 res = create_conv(NULL, res, mode);
2575 static ir_node *expression_to_modeb(const expression_t *expression)
2577 ir_node *res = _expression_to_firm(expression);
2578 res = create_conv(NULL, res, mode_b);
2584 * create a short-circuit expression evaluation that tries to construct
2585 * efficient control flow structures for &&, || and ! expressions
2587 static void create_condition_evaluation(const expression_t *expression,
2588 ir_node *true_block,
2589 ir_node *false_block)
2591 switch(expression->kind) {
2592 case EXPR_UNARY_NOT: {
2593 const unary_expression_t *unary_expression = &expression->unary;
2594 create_condition_evaluation(unary_expression->value, false_block,
2598 case EXPR_BINARY_LOGICAL_AND: {
2599 const binary_expression_t *binary_expression = &expression->binary;
2601 ir_node *cur_block = get_cur_block();
2602 ir_node *extra_block = new_immBlock();
2603 set_cur_block(cur_block);
2604 create_condition_evaluation(binary_expression->left, extra_block,
2606 mature_immBlock(extra_block);
2607 set_cur_block(extra_block);
2608 create_condition_evaluation(binary_expression->right, true_block,
2612 case EXPR_BINARY_LOGICAL_OR: {
2613 const binary_expression_t *binary_expression = &expression->binary;
2615 ir_node *cur_block = get_cur_block();
2616 ir_node *extra_block = new_immBlock();
2617 set_cur_block(cur_block);
2618 create_condition_evaluation(binary_expression->left, true_block,
2620 mature_immBlock(extra_block);
2621 set_cur_block(extra_block);
2622 create_condition_evaluation(binary_expression->right, true_block,
2630 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2631 ir_node *condition = expression_to_modeb(expression);
2632 ir_node *cond = new_d_Cond(dbgi, condition);
2633 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
2634 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
2636 /* set branch prediction info based on __builtin_expect */
2637 if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
2638 long cnst = fold_constant(expression->binary.right);
2639 cond_jmp_predicate pred;
2642 pred = COND_JMP_PRED_FALSE;
2644 pred = COND_JMP_PRED_TRUE;
2646 set_Cond_jmp_pred(cond, pred);
2649 add_immBlock_pred(true_block, true_proj);
2650 add_immBlock_pred(false_block, false_proj);
2652 set_cur_block(NULL);
2657 static void create_declaration_entity(declaration_t *declaration,
2658 declaration_kind_t declaration_kind,
2659 ir_type *parent_type)
2661 ident *const id = new_id_from_str(declaration->symbol->string);
2662 ir_type *const irtype = get_ir_type(declaration->type);
2663 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
2664 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
2665 set_entity_ld_ident(entity, id);
2667 declaration->declaration_kind = (unsigned char) declaration_kind;
2668 declaration->v.entity = entity;
2669 set_entity_variability(entity, variability_uninitialized);
2670 if(parent_type == get_tls_type())
2671 set_entity_allocation(entity, allocation_automatic);
2672 else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
2673 set_entity_allocation(entity, allocation_static);
2674 /* TODO: visibility? */
2677 typedef struct compound_graph_path_entry_t compound_graph_path_entry_t;
2679 enum compound_graph_entry_type_t {
2680 COMPOUND_GRAPH_ENTRY_ARRAY,
2681 COMPOUND_GRAPH_ENTRY_COMPOUND
2684 struct compound_graph_path_entry_t {
2690 compound_graph_path_entry_t *prev;
2693 static void create_initializer_object(initializer_t *initializer, type_t *type,
2694 ir_entity *entity, compound_graph_path_entry_t *entry, int len);
2696 static compound_graph_path *create_compound_path(ir_type *type,
2697 compound_graph_path_entry_t *entry, int len)
2699 compound_graph_path *path = new_compound_graph_path(type, len);
2702 for( ; entry != NULL; entry = entry->prev, --i) {
2704 if(entry->type == COMPOUND_GRAPH_ENTRY_COMPOUND) {
2705 set_compound_graph_path_node(path, i, entry->v.entity);
2707 assert(entry->type == COMPOUND_GRAPH_ENTRY_ARRAY);
2708 set_compound_graph_path_array_index(path, i, entry->v.array_index);
2716 static void create_initializer_value(initializer_value_t *initializer,
2718 compound_graph_path_entry_t *entry,
2721 ir_node *node = expression_to_firm(initializer->value);
2722 ir_type *type = get_entity_type(entity);
2723 compound_graph_path *path = create_compound_path(type, entry, len);
2724 add_compound_ent_value_w_path(entity, node, path);
2727 static void create_initializer_compound(initializer_list_t *initializer,
2728 compound_type_t *type,
2730 compound_graph_path_entry_t *last_entry,
2733 declaration_t *compound_declaration = type->declaration;
2735 declaration_t *compound_entry = compound_declaration->scope.declarations;
2737 compound_graph_path_entry_t entry;
2738 entry.type = COMPOUND_GRAPH_ENTRY_COMPOUND;
2739 entry.prev = last_entry;
2743 for( ; compound_entry != NULL; compound_entry = compound_entry->next) {
2744 if(compound_entry->symbol == NULL)
2746 if(compound_entry->namespc != NAMESPACE_NORMAL)
2749 if(i >= initializer->len)
2752 entry.v.entity = compound_entry->v.entity;
2754 initializer_t *sub_initializer = initializer->initializers[i];
2756 assert(compound_entry != NULL);
2757 assert(compound_entry->declaration_kind
2758 == DECLARATION_KIND_COMPOUND_MEMBER);
2760 if(sub_initializer->kind == INITIALIZER_VALUE) {
2761 create_initializer_value(&sub_initializer->value,
2762 entity, &entry, len);
2764 type_t *entry_type = skip_typeref(compound_entry->type);
2765 create_initializer_object(sub_initializer, entry_type, entity,
2773 static void create_initializer_array(initializer_list_t *initializer,
2774 array_type_t *type, ir_entity *entity,
2775 compound_graph_path_entry_t *last_entry,
2778 type_t *element_type = type->element_type;
2779 element_type = skip_typeref(element_type);
2781 compound_graph_path_entry_t entry;
2782 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2783 entry.prev = last_entry;
2787 for(i = 0; i < initializer->len; ++i) {
2788 entry.v.array_index = i;
2790 initializer_t *sub_initializer = initializer->initializers[i];
2792 if(sub_initializer->kind == INITIALIZER_VALUE) {
2793 create_initializer_value(&sub_initializer->value,
2794 entity, &entry, len);
2796 create_initializer_object(sub_initializer, element_type, entity,
2802 /* TODO: initialize rest... */
2803 if(type->size_expression != NULL) {
2804 size_t array_len = fold_constant(type->size_expression);
2805 for( ; i < array_len; ++i) {
2812 static void create_initializer_string(initializer_string_t *initializer,
2813 array_type_t *type, ir_entity *entity,
2814 compound_graph_path_entry_t *last_entry,
2817 type_t *element_type = type->element_type;
2818 element_type = skip_typeref(element_type);
2820 compound_graph_path_entry_t entry;
2821 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2822 entry.prev = last_entry;
2825 ir_type *const irtype = get_entity_type(entity);
2826 size_t arr_len = get_array_type_size(type);
2827 const char *const p = initializer->string.begin;
2828 if (initializer->string.size < arr_len) {
2829 arr_len = initializer->string.size;
2831 for (size_t i = 0; i < arr_len; ++i) {
2832 entry.v.array_index = i;
2834 ir_node *node = new_Const_long(mode_Bs, p[i]);
2835 compound_graph_path *path = create_compound_path(irtype, &entry, len);
2836 add_compound_ent_value_w_path(entity, node, path);
2840 static void create_initializer_wide_string(
2841 const initializer_wide_string_t *const initializer, array_type_t *const type,
2842 ir_entity *const entity, compound_graph_path_entry_t *const last_entry,
2845 type_t *element_type = type->element_type;
2846 element_type = skip_typeref(element_type);
2848 compound_graph_path_entry_t entry;
2849 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2850 entry.prev = last_entry;
2853 ir_type *const irtype = get_entity_type(entity);
2854 const size_t arr_len = get_array_type_size(type);
2855 const wchar_rep_t * p = initializer->string.begin;
2856 const wchar_rep_t *const end = p + initializer->string.size;
2857 for (size_t i = 0; i < arr_len && p != end; ++i, ++p) {
2858 entry.v.array_index = i;
2860 ir_node *node = new_Const_long(mode_int, *p);
2861 compound_graph_path *path = create_compound_path(irtype, &entry, len);
2862 add_compound_ent_value_w_path(entity, node, path);
2866 static void create_initializer_object(initializer_t *initializer, type_t *type,
2867 ir_entity *entity, compound_graph_path_entry_t *entry, int len)
2869 if(is_type_array(type)) {
2870 array_type_t *array_type = &type->array;
2872 switch (initializer->kind) {
2873 case INITIALIZER_STRING: {
2874 initializer_string_t *const string = &initializer->string;
2875 create_initializer_string(string, array_type, entity, entry, len);
2879 case INITIALIZER_WIDE_STRING: {
2880 initializer_wide_string_t *const string = &initializer->wide_string;
2881 create_initializer_wide_string(string, array_type, entity, entry, len);
2885 case INITIALIZER_LIST: {
2886 initializer_list_t *const list = &initializer->list;
2887 create_initializer_array(list, array_type, entity, entry, len);
2891 case INITIALIZER_VALUE:
2894 panic("Unhandled initializer");
2896 assert(initializer->kind == INITIALIZER_LIST);
2897 initializer_list_t *list = &initializer->list;
2899 assert(is_type_compound(type));
2900 compound_type_t *compound_type = &type->compound;
2901 create_initializer_compound(list, compound_type, entity, entry, len);
2905 static void create_initializer_local_variable_entity(declaration_t *declaration)
2907 initializer_t *initializer = declaration->init.initializer;
2908 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
2909 ir_entity *entity = declaration->v.entity;
2910 ir_node *memory = get_store();
2911 ir_node *nomem = new_NoMem();
2912 ir_node *frame = get_irg_frame(current_ir_graph);
2913 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
2915 if(initializer->kind == INITIALIZER_VALUE) {
2916 initializer_value_t *initializer_value = &initializer->value;
2918 ir_node *value = expression_to_firm(initializer_value->value);
2919 type_t *type = skip_typeref(declaration->type);
2920 assign_value(dbgi, addr, type, value);
2924 /* create a "template" entity which is copied to the entity on the stack */
2925 ident *const id = unique_ident("initializer");
2926 ir_type *const irtype = get_ir_type(declaration->type);
2927 ir_type *const global_type = get_glob_type();
2928 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
2929 set_entity_ld_ident(init_entity, id);
2931 set_entity_variability(init_entity, variability_initialized);
2932 set_entity_visibility(init_entity, visibility_local);
2933 set_entity_allocation(init_entity, allocation_static);
2935 ir_graph *const old_current_ir_graph = current_ir_graph;
2936 current_ir_graph = get_const_code_irg();
2938 type_t *const type = skip_typeref(declaration->type);
2939 create_initializer_object(initializer, type, init_entity, NULL, 0);
2941 assert(current_ir_graph == get_const_code_irg());
2942 current_ir_graph = old_current_ir_graph;
2944 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
2945 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
2947 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
2948 set_store(copyb_mem);
2951 static void create_initializer(declaration_t *declaration)
2953 initializer_t *initializer = declaration->init.initializer;
2954 if(initializer == NULL)
2957 declaration_kind_t declaration_kind
2958 = (declaration_kind_t) declaration->declaration_kind;
2959 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
2960 create_initializer_local_variable_entity(declaration);
2964 if(initializer->kind == INITIALIZER_VALUE) {
2965 initializer_value_t *initializer_value = &initializer->value;
2967 ir_node *value = expression_to_firm(initializer_value->value);
2969 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2970 set_value(declaration->v.value_number, value);
2972 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
2974 ir_entity *entity = declaration->v.entity;
2976 set_entity_variability(entity, variability_initialized);
2977 set_atomic_ent_value(entity, value);
2980 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
2981 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
2983 ir_entity *entity = declaration->v.entity;
2984 set_entity_variability(entity, variability_initialized);
2986 type_t *type = skip_typeref(declaration->type);
2987 create_initializer_object(initializer, type, entity, NULL, 0);
2992 * Creates a Firm local variable from a declaration.
2994 static void create_local_variable(declaration_t *declaration)
2996 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
2998 bool needs_entity = declaration->address_taken;
2999 type_t *type = skip_typeref(declaration->type);
3001 if(is_type_array(type) || is_type_compound(type)) {
3002 needs_entity = true;
3006 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3007 create_declaration_entity(declaration,
3008 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3011 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3012 declaration->v.value_number = next_value_number_function;
3013 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3014 ++next_value_number_function;
3017 create_initializer(declaration);
3020 static void create_local_static_variable(declaration_t *declaration)
3022 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3024 type_t *const type = skip_typeref(declaration->type);
3025 ir_type *const global_type = get_glob_type();
3026 ident *const id = unique_ident(declaration->symbol->string);
3027 ir_type *const irtype = get_ir_type(type);
3028 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3029 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
3030 set_entity_ld_ident(entity, id);
3032 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3033 declaration->v.entity = entity;
3034 set_entity_variability(entity, variability_uninitialized);
3035 set_entity_visibility(entity, visibility_local);
3036 set_entity_allocation(entity, allocation_static);
3038 ir_graph *const old_current_ir_graph = current_ir_graph;
3039 current_ir_graph = get_const_code_irg();
3041 create_initializer(declaration);
3043 assert(current_ir_graph == get_const_code_irg());
3044 current_ir_graph = old_current_ir_graph;
3049 static void return_statement_to_firm(return_statement_t *statement)
3051 if(get_cur_block() == NULL)
3054 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3055 ir_type *func_irtype = get_ir_type(current_function_decl->type);
3060 if(get_method_n_ress(func_irtype) > 0) {
3061 ir_type *res_type = get_method_res_type(func_irtype, 0);
3063 if(statement->value != NULL) {
3064 ir_node *node = expression_to_firm(statement->value);
3065 node = do_strict_conv(dbgi, node);
3069 if(is_compound_type(res_type)) {
3072 mode = get_type_mode(res_type);
3074 in[0] = new_Unknown(mode);
3078 /* build return_value for its side effects */
3079 if(statement->value != NULL) {
3080 expression_to_firm(statement->value);
3085 ir_node *store = get_store();
3086 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
3088 ir_node *end_block = get_irg_end_block(current_ir_graph);
3089 add_immBlock_pred(end_block, ret);
3091 set_cur_block(NULL);
3094 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3096 if(get_cur_block() == NULL)
3099 return expression_to_firm(statement->expression);
3102 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3104 ir_node *result = NULL;
3105 statement_t *statement = compound->statements;
3106 for( ; statement != NULL; statement = statement->base.next) {
3107 //context2firm(&statement->scope);
3109 if(statement->base.next == NULL
3110 && statement->kind == STATEMENT_EXPRESSION) {
3111 result = expression_statement_to_firm(
3112 &statement->expression);
3115 statement_to_firm(statement);
3121 static void create_local_declaration(declaration_t *declaration)
3123 if(declaration->symbol == NULL)
3126 type_t *type = skip_typeref(declaration->type);
3128 switch ((storage_class_tag_t) declaration->storage_class) {
3129 case STORAGE_CLASS_STATIC:
3130 create_local_static_variable(declaration);
3132 case STORAGE_CLASS_ENUM_ENTRY:
3133 panic("enum entry declaration in local block found");
3134 case STORAGE_CLASS_EXTERN:
3135 panic("extern declaration in local block found");
3136 case STORAGE_CLASS_NONE:
3137 case STORAGE_CLASS_AUTO:
3138 case STORAGE_CLASS_REGISTER:
3139 if(is_type_function(type)) {
3140 panic("nested functions not supported yet");
3142 create_local_variable(declaration);
3145 case STORAGE_CLASS_TYPEDEF:
3146 case STORAGE_CLASS_THREAD:
3147 case STORAGE_CLASS_THREAD_EXTERN:
3148 case STORAGE_CLASS_THREAD_STATIC:
3151 panic("invalid storage class found");
3154 static void declaration_statement_to_firm(declaration_statement_t *statement)
3156 declaration_t *declaration = statement->declarations_begin;
3157 declaration_t *end = statement->declarations_end->next;
3158 for( ; declaration != end; declaration = declaration->next) {
3159 if(declaration->namespc != NAMESPACE_NORMAL)
3161 create_local_declaration(declaration);
3165 static void if_statement_to_firm(if_statement_t *statement)
3167 ir_node *cur_block = get_cur_block();
3169 ir_node *fallthrough_block = new_immBlock();
3171 /* the true (blocks) */
3172 ir_node *true_block;
3173 if (statement->true_statement != NULL) {
3174 true_block = new_immBlock();
3175 statement_to_firm(statement->true_statement);
3176 if(get_cur_block() != NULL) {
3177 ir_node *jmp = new_Jmp();
3178 add_immBlock_pred(fallthrough_block, jmp);
3181 true_block = fallthrough_block;
3184 /* the false (blocks) */
3185 ir_node *false_block;
3186 if(statement->false_statement != NULL) {
3187 false_block = new_immBlock();
3189 statement_to_firm(statement->false_statement);
3190 if(get_cur_block() != NULL) {
3191 ir_node *jmp = new_Jmp();
3192 add_immBlock_pred(fallthrough_block, jmp);
3195 false_block = fallthrough_block;
3198 /* create the condition */
3199 if(cur_block != NULL) {
3200 set_cur_block(cur_block);
3201 create_condition_evaluation(statement->condition, true_block,
3205 mature_immBlock(true_block);
3206 if(false_block != fallthrough_block) {
3207 mature_immBlock(false_block);
3209 mature_immBlock(fallthrough_block);
3211 set_cur_block(fallthrough_block);
3214 static void while_statement_to_firm(while_statement_t *statement)
3216 ir_node *jmp = NULL;
3217 if(get_cur_block() != NULL) {
3221 /* create the header block */
3222 ir_node *header_block = new_immBlock();
3224 add_immBlock_pred(header_block, jmp);
3227 /* the false block */
3228 ir_node *false_block = new_immBlock();
3231 ir_node *body_block;
3232 if (statement->body != NULL) {
3233 ir_node *old_continue_label = continue_label;
3234 ir_node *old_break_label = break_label;
3235 continue_label = header_block;
3236 break_label = false_block;
3238 body_block = new_immBlock();
3239 statement_to_firm(statement->body);
3241 assert(continue_label == header_block);
3242 assert(break_label == false_block);
3243 continue_label = old_continue_label;
3244 break_label = old_break_label;
3246 if(get_cur_block() != NULL) {
3248 add_immBlock_pred(header_block, jmp);
3251 body_block = header_block;
3254 /* create the condition */
3255 set_cur_block(header_block);
3257 create_condition_evaluation(statement->condition, body_block, false_block);
3258 mature_immBlock(body_block);
3259 mature_immBlock(false_block);
3260 mature_immBlock(header_block);
3262 set_cur_block(false_block);
3265 static void do_while_statement_to_firm(do_while_statement_t *statement)
3267 ir_node *jmp = NULL;
3268 if(get_cur_block() != NULL) {
3272 /* create the header block */
3273 ir_node *header_block = new_immBlock();
3275 /* the false block */
3276 ir_node *false_block = new_immBlock();
3279 ir_node *body_block = new_immBlock();
3281 add_immBlock_pred(body_block, jmp);
3284 if (statement->body != NULL) {
3285 ir_node *old_continue_label = continue_label;
3286 ir_node *old_break_label = break_label;
3287 continue_label = header_block;
3288 break_label = false_block;
3290 statement_to_firm(statement->body);
3292 assert(continue_label == header_block);
3293 assert(break_label == false_block);
3294 continue_label = old_continue_label;
3295 break_label = old_break_label;
3297 if (get_cur_block() == NULL) {
3298 mature_immBlock(header_block);
3299 mature_immBlock(body_block);
3300 mature_immBlock(false_block);
3305 ir_node *body_jmp = new_Jmp();
3306 add_immBlock_pred(header_block, body_jmp);
3307 mature_immBlock(header_block);
3309 /* create the condition */
3310 set_cur_block(header_block);
3312 create_condition_evaluation(statement->condition, body_block, false_block);
3313 mature_immBlock(body_block);
3314 mature_immBlock(false_block);
3315 mature_immBlock(header_block);
3317 set_cur_block(false_block);
3320 static void for_statement_to_firm(for_statement_t *statement)
3322 ir_node *jmp = NULL;
3323 if (get_cur_block() != NULL) {
3324 if(statement->initialisation != NULL) {
3325 expression_to_firm(statement->initialisation);
3328 /* create declarations */
3329 declaration_t *declaration = statement->scope.declarations;
3330 for( ; declaration != NULL; declaration = declaration->next) {
3331 create_local_declaration(declaration);
3338 /* create the step block */
3339 ir_node *const step_block = new_immBlock();
3340 if (statement->step != NULL) {
3341 expression_to_firm(statement->step);
3343 ir_node *const step_jmp = new_Jmp();
3345 /* create the header block */
3346 ir_node *const header_block = new_immBlock();
3348 add_immBlock_pred(header_block, jmp);
3350 add_immBlock_pred(header_block, step_jmp);
3352 /* the false block */
3353 ir_node *const false_block = new_immBlock();
3356 ir_node * body_block;
3357 if (statement->body != NULL) {
3358 ir_node *const old_continue_label = continue_label;
3359 ir_node *const old_break_label = break_label;
3360 continue_label = step_block;
3361 break_label = false_block;
3363 body_block = new_immBlock();
3364 statement_to_firm(statement->body);
3366 assert(continue_label == step_block);
3367 assert(break_label == false_block);
3368 continue_label = old_continue_label;
3369 break_label = old_break_label;
3371 if (get_cur_block() != NULL) {
3373 add_immBlock_pred(step_block, jmp);
3376 body_block = step_block;
3379 /* create the condition */
3380 set_cur_block(header_block);
3381 if (statement->condition != NULL) {
3382 create_condition_evaluation(statement->condition, body_block,
3385 keep_alive(header_block);
3387 add_immBlock_pred(body_block, jmp);
3390 mature_immBlock(body_block);
3391 mature_immBlock(false_block);
3392 mature_immBlock(step_block);
3393 mature_immBlock(header_block);
3394 mature_immBlock(false_block);
3396 set_cur_block(false_block);
3399 static void create_jump_statement(const statement_t *statement,
3400 ir_node *target_block)
3402 if(get_cur_block() == NULL)
3405 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3406 ir_node *jump = new_d_Jmp(dbgi);
3407 add_immBlock_pred(target_block, jump);
3409 set_cur_block(NULL);
3412 static void switch_statement_to_firm(const switch_statement_t *statement)
3414 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3416 ir_node *expression = expression_to_firm(statement->expression);
3417 ir_node *cond = new_d_Cond(dbgi, expression);
3418 ir_node *break_block = new_immBlock();
3420 set_cur_block(NULL);
3422 ir_node *const old_switch_cond = current_switch_cond;
3423 ir_node *const old_break_label = break_label;
3424 const bool old_saw_default_label = saw_default_label;
3425 current_switch_cond = cond;
3426 break_label = break_block;
3428 if (statement->body != NULL) {
3429 statement_to_firm(statement->body);
3432 if(get_cur_block() != NULL) {
3433 ir_node *jmp = new_Jmp();
3434 add_immBlock_pred(break_block, jmp);
3437 if (!saw_default_label) {
3438 set_cur_block(get_nodes_block(cond));
3439 ir_node *const proj = new_d_defaultProj(dbgi, cond,
3440 MAGIC_DEFAULT_PN_NUMBER);
3441 add_immBlock_pred(break_block, proj);
3444 assert(current_switch_cond == cond);
3445 assert(break_label == break_block);
3446 current_switch_cond = old_switch_cond;
3447 break_label = old_break_label;
3448 saw_default_label = old_saw_default_label;
3450 mature_immBlock(break_block);
3451 set_cur_block(break_block);
3454 static void case_label_to_firm(const case_label_statement_t *statement)
3456 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3458 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
3460 /* let's create a node and hope firm constant folding creates a Const
3463 ir_node *old_block = get_nodes_block(current_switch_cond);
3464 ir_node *block = new_immBlock();
3466 set_cur_block(old_block);
3467 if(statement->expression != NULL) {
3468 long start_pn = fold_constant(statement->expression);
3469 long end_pn = start_pn;
3470 if (statement->end_range != NULL) {
3471 end_pn = fold_constant(statement->end_range);
3473 assert(start_pn <= end_pn);
3474 /* create jumps for all cases in the given range */
3475 for (long pn = start_pn; pn <= end_pn; ++pn) {
3476 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
3477 /* oops someone detected our cheating... */
3478 panic("magic default pn used");
3480 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
3481 add_immBlock_pred(block, proj);
3484 saw_default_label = true;
3485 proj = new_d_defaultProj(dbgi, current_switch_cond,
3486 MAGIC_DEFAULT_PN_NUMBER);
3488 add_immBlock_pred(block, proj);
3491 if (fallthrough != NULL) {
3492 add_immBlock_pred(block, fallthrough);
3494 mature_immBlock(block);
3495 set_cur_block(block);
3497 if(statement->statement != NULL) {
3498 statement_to_firm(statement->statement);
3502 static ir_node *get_label_block(declaration_t *label)
3504 assert(label->namespc == NAMESPACE_LABEL);
3506 if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
3507 return label->v.block;
3509 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
3511 ir_node *old_cur_block = get_cur_block();
3512 ir_node *block = new_immBlock();
3513 set_cur_block(old_cur_block);
3515 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
3516 label->v.block = block;
3518 ARR_APP1(ir_node *, imature_blocks, block);
3523 static void label_to_firm(const label_statement_t *statement)
3525 ir_node *block = get_label_block(statement->label);
3527 if(get_cur_block() != NULL) {
3528 ir_node *jmp = new_Jmp();
3529 add_immBlock_pred(block, jmp);
3532 set_cur_block(block);
3535 if(statement->statement != NULL) {
3536 statement_to_firm(statement->statement);
3540 static void goto_to_firm(const goto_statement_t *statement)
3542 if(get_cur_block() == NULL)
3545 ir_node *block = get_label_block(statement->label);
3546 ir_node *jmp = new_Jmp();
3547 add_immBlock_pred(block, jmp);
3549 set_cur_block(NULL);
3552 typedef enum modifier_t {
3553 ASM_MODIFIER_WRITE_ONLY = 1 << 0,
3554 ASM_MODIFIER_READ_WRITE = 1 << 1,
3555 ASM_MODIFIER_COMMUTATIVE = 1 << 2,
3556 ASM_MODIFIER_EARLYCLOBBER = 1 << 3,
3560 static void asm_statement_to_firm(const asm_statement_t *statement)
3562 bool needs_memory = false;
3564 size_t n_clobbers = 0;
3565 asm_clobber_t *clobber = statement->clobbers;
3566 for( ; clobber != NULL; clobber = clobber->next) {
3567 if(strcmp(clobber->clobber, "memory") == 0) {
3568 needs_memory = true;
3572 ident *id = new_id_from_str(clobber->clobber);
3573 obstack_ptr_grow(&asm_obst, id);
3576 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
3577 ident **clobbers = NULL;
3578 if(n_clobbers > 0) {
3579 clobbers = obstack_finish(&asm_obst);
3582 /* find and count input and output constraints */
3583 asm_constraint_t *constraint = statement->inputs;
3584 for( ; constraint != NULL; constraint = constraint->next) {
3586 bool supports_memop = false;
3587 for(const char *c = constraint->constraints; *c != 0; ++c) {
3588 /* TODO: improve error messages */
3592 panic("multiple alternative assembler constraints not "
3600 supports_memop = true;
3601 obstack_1grow(&asm_obst, *c);
3604 if(modifiers & ASM_MODIFIER_READ_WRITE)
3605 panic("inconsistent register constraints");
3606 modifiers |= ASM_MODIFIER_WRITE_ONLY;
3609 if(modifiers & ASM_MODIFIER_WRITE_ONLY)
3610 panic("inconsistent register constraints");
3611 modifiers |= ASM_MODIFIER_READ_WRITE;
3614 modifiers |= ASM_MODIFIER_EARLYCLOBBER;
3615 panic("early clobber assembler constraint not supported yet");
3618 modifiers |= ASM_MODIFIER_COMMUTATIVE;
3619 panic("commutative assembler constraint not supported yet");
3622 /* skip register preferences stuff... */
3623 while(*c != 0 && *c != ',')
3627 /* skip register preferences stuff... */
3631 obstack_1grow(&asm_obst, *c);
3635 obstack_1grow(&asm_obst, '\0');
3636 const char *constraint_string = obstack_finish(&asm_obst);
3638 needs_memory |= supports_memop;
3639 if(supports_memop) {
3647 static void statement_to_firm(statement_t *statement)
3649 switch(statement->kind) {
3650 case STATEMENT_INVALID:
3651 panic("invalid statement found");
3652 case STATEMENT_COMPOUND:
3653 compound_statement_to_firm(&statement->compound);
3655 case STATEMENT_RETURN:
3656 return_statement_to_firm(&statement->returns);
3658 case STATEMENT_EXPRESSION:
3659 expression_statement_to_firm(&statement->expression);
3662 if_statement_to_firm(&statement->ifs);
3664 case STATEMENT_WHILE:
3665 while_statement_to_firm(&statement->whiles);
3667 case STATEMENT_DO_WHILE:
3668 do_while_statement_to_firm(&statement->do_while);
3670 case STATEMENT_DECLARATION:
3671 declaration_statement_to_firm(&statement->declaration);
3673 case STATEMENT_BREAK:
3674 create_jump_statement(statement, break_label);
3676 case STATEMENT_CONTINUE:
3677 create_jump_statement(statement, continue_label);
3679 case STATEMENT_SWITCH:
3680 switch_statement_to_firm(&statement->switchs);
3682 case STATEMENT_CASE_LABEL:
3683 case_label_to_firm(&statement->case_label);
3686 for_statement_to_firm(&statement->fors);
3688 case STATEMENT_LABEL:
3689 label_to_firm(&statement->label);
3691 case STATEMENT_GOTO:
3692 goto_to_firm(&statement->gotos);
3695 //asm_statement_to_firm(&statement->asms);
3699 panic("Statement not implemented\n");
3702 static int count_decls_in_expression(const expression_t *expression);
3704 static int count_local_declarations(const declaration_t * decl,
3705 const declaration_t *const end)
3708 for (; decl != end; decl = decl->next) {
3709 if(decl->namespc != NAMESPACE_NORMAL)
3711 const type_t *type = skip_typeref(decl->type);
3712 if (!decl->address_taken && is_type_scalar(type))
3714 const initializer_t *initializer = decl->init.initializer;
3715 /* FIXME: should walk initializer hierarchies... */
3716 if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
3717 count += count_decls_in_expression(initializer->value.value);
3723 static int count_decls_in_expression(const expression_t *expression) {
3724 if(expression == NULL)
3727 switch(expression->base.kind) {
3728 case EXPR_STATEMENT:
3729 return count_decls_in_stmts(expression->statement.statement);
3731 int count_left = count_decls_in_expression(expression->binary.left);
3732 int count_right = count_decls_in_expression(expression->binary.right);
3733 return count_left + count_right;
3736 return count_decls_in_expression(expression->unary.value);
3742 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
3743 * (or implement all the missing expressions here/implement a walker)
3749 static int count_decls_in_stmts(const statement_t *stmt)
3752 for (; stmt != NULL; stmt = stmt->base.next) {
3753 switch (stmt->kind) {
3754 case STATEMENT_DECLARATION: {
3755 const declaration_statement_t *const decl_stmt = &stmt->declaration;
3756 count += count_local_declarations(decl_stmt->declarations_begin,
3757 decl_stmt->declarations_end->next);
3761 case STATEMENT_COMPOUND: {
3762 const compound_statement_t *const comp =
3764 count += count_decls_in_stmts(comp->statements);
3768 case STATEMENT_IF: {
3769 const if_statement_t *const if_stmt = &stmt->ifs;
3770 count += count_decls_in_expression(if_stmt->condition);
3771 count += count_decls_in_stmts(if_stmt->true_statement);
3772 count += count_decls_in_stmts(if_stmt->false_statement);
3776 case STATEMENT_SWITCH: {
3777 const switch_statement_t *const switch_stmt = &stmt->switchs;
3778 count += count_decls_in_expression(switch_stmt->expression);
3779 count += count_decls_in_stmts(switch_stmt->body);
3783 case STATEMENT_LABEL: {
3784 const label_statement_t *const label_stmt = &stmt->label;
3785 if(label_stmt->statement != NULL) {
3786 count += count_decls_in_stmts(label_stmt->statement);
3791 case STATEMENT_WHILE: {
3792 const while_statement_t *const while_stmt = &stmt->whiles;
3793 count += count_decls_in_expression(while_stmt->condition);
3794 count += count_decls_in_stmts(while_stmt->body);
3798 case STATEMENT_DO_WHILE: {
3799 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
3800 count += count_decls_in_expression(do_while_stmt->condition);
3801 count += count_decls_in_stmts(do_while_stmt->body);
3805 case STATEMENT_FOR: {
3806 const for_statement_t *const for_stmt = &stmt->fors;
3807 count += count_local_declarations(for_stmt->scope.declarations, NULL);
3808 count += count_decls_in_expression(for_stmt->initialisation);
3809 count += count_decls_in_expression(for_stmt->condition);
3810 count += count_decls_in_expression(for_stmt->step);
3811 count += count_decls_in_stmts(for_stmt->body);
3815 case STATEMENT_CASE_LABEL: {
3816 const case_label_statement_t *label = &stmt->case_label;
3817 count += count_decls_in_expression(label->expression);
3818 if(label->statement != NULL) {
3819 count += count_decls_in_stmts(label->statement);
3825 case STATEMENT_BREAK:
3826 case STATEMENT_CONTINUE:
3829 case STATEMENT_EXPRESSION: {
3830 const expression_statement_t *expr_stmt = &stmt->expression;
3831 count += count_decls_in_expression(expr_stmt->expression);
3835 case STATEMENT_GOTO:
3836 case STATEMENT_INVALID:
3839 case STATEMENT_RETURN: {
3840 const return_statement_t *ret_stmt = &stmt->returns;
3841 count += count_decls_in_expression(ret_stmt->value);
3849 static int get_function_n_local_vars(declaration_t *declaration)
3853 /* count parameters */
3854 count += count_local_declarations(declaration->scope.declarations, NULL);
3856 /* count local variables declared in body */
3857 count += count_decls_in_stmts(declaration->init.statement);
3862 static void initialize_function_parameters(declaration_t *declaration)
3864 ir_graph *irg = current_ir_graph;
3865 ir_node *args = get_irg_args(irg);
3866 ir_node *start_block = get_irg_start_block(irg);
3867 ir_type *function_irtype = get_ir_type(declaration->type);
3870 declaration_t *parameter = declaration->scope.declarations;
3871 for( ; parameter != NULL; parameter = parameter->next, ++n) {
3872 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
3873 type_t *type = skip_typeref(parameter->type);
3875 bool needs_entity = parameter->address_taken;
3876 assert(!is_type_array(type));
3877 if(is_type_compound(type)) {
3878 needs_entity = true;
3882 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
3883 ident *id = new_id_from_str(parameter->symbol->string);
3884 set_entity_ident(entity, id);
3886 parameter->declaration_kind
3887 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
3888 parameter->v.entity = entity;
3892 ir_mode *mode = get_ir_mode(parameter->type);
3894 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
3896 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3897 parameter->v.value_number = next_value_number_function;
3898 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
3899 ++next_value_number_function;
3901 set_value(parameter->v.value_number, proj);
3906 * Handle additional decl modifiers for IR-graphs
3908 * @param irg the IR-graph
3909 * @param dec_modifiers additional modifiers
3911 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
3913 if (decl_modifiers & DM_NORETURN) {
3914 /* TRUE if the declaration includes the Microsoft
3915 __declspec(noreturn) specifier. */
3916 set_irg_additional_property(irg, mtp_property_noreturn);
3918 if (decl_modifiers & DM_NOTHROW) {
3919 /* TRUE if the declaration includes the Microsoft
3920 __declspec(nothrow) specifier. */
3921 set_irg_additional_property(irg, mtp_property_nothrow);
3923 if (decl_modifiers & DM_NAKED) {
3924 /* TRUE if the declaration includes the Microsoft
3925 __declspec(naked) specifier. */
3926 set_irg_additional_property(irg, mtp_property_naked);
3928 if (decl_modifiers & DM_FORCEINLINE) {
3929 /* TRUE if the declaration includes the
3930 Microsoft __forceinline specifier. */
3931 set_irg_inline_property(irg, irg_inline_forced);
3933 if (decl_modifiers & DM_NOINLINE) {
3934 /* TRUE if the declaration includes the Microsoft
3935 __declspec(noinline) specifier. */
3936 set_irg_inline_property(irg, irg_inline_forbidden);
3940 static void create_function(declaration_t *declaration)
3942 ir_entity *function_entity = get_function_entity(declaration);
3944 if(declaration->init.statement == NULL)
3947 current_function_decl = declaration;
3948 current_function_name = NULL;
3950 assert(imature_blocks == NULL);
3951 imature_blocks = NEW_ARR_F(ir_node*, 0);
3953 int n_local_vars = get_function_n_local_vars(declaration);
3954 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
3955 ir_node *first_block = get_cur_block();
3957 /* set inline flags */
3958 if (declaration->is_inline)
3959 set_irg_inline_property(irg, irg_inline_recomended);
3960 handle_decl_modifier_irg(irg, declaration->modifiers);
3962 next_value_number_function = 0;
3963 initialize_function_parameters(declaration);
3965 statement_to_firm(declaration->init.statement);
3967 ir_node *end_block = get_irg_end_block(irg);
3969 /* do we have a return statement yet? */
3970 if(get_cur_block() != NULL) {
3971 type_t *type = skip_typeref(declaration->type);
3972 assert(is_type_function(type));
3973 const function_type_t *func_type = &type->function;
3974 const type_t *return_type
3975 = skip_typeref(func_type->return_type);
3978 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
3979 ret = new_Return(get_store(), 0, NULL);
3982 if(is_type_scalar(return_type)) {
3983 mode = get_ir_mode(func_type->return_type);
3989 /* ยง5.1.2.2.3 main implicitly returns 0 */
3990 if (strcmp(declaration->symbol->string, "main") == 0) {
3991 in[0] = new_Const(mode, get_mode_null(mode));
3993 in[0] = new_Unknown(mode);
3995 ret = new_Return(get_store(), 1, in);
3997 add_immBlock_pred(end_block, ret);
4000 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
4001 mature_immBlock(imature_blocks[i]);
4003 DEL_ARR_F(imature_blocks);
4004 imature_blocks = NULL;
4006 mature_immBlock(first_block);
4007 mature_immBlock(end_block);
4009 irg_finalize_cons(irg);
4011 /* finalize the frame type */
4012 ir_type *frame_type = get_irg_frame_type(irg);
4013 int n = get_compound_n_members(frame_type);
4016 for(int i = 0; i < n; ++i) {
4017 ir_entity *entity = get_compound_member(frame_type, i);
4018 ir_type *entity_type = get_entity_type(entity);
4020 int align = get_type_alignment_bytes(entity_type);
4021 if(align > align_all)
4025 misalign = offset % align;
4027 offset += align - misalign;
4031 set_entity_offset(entity, offset);
4032 offset += get_type_size_bytes(entity_type);
4034 set_type_size_bytes(frame_type, offset);
4035 set_type_alignment_bytes(frame_type, align_all);
4036 set_type_state(frame_type, layout_fixed);
4041 static void create_global_variable(declaration_t *declaration)
4045 switch ((storage_class_tag_t)declaration->storage_class) {
4046 case STORAGE_CLASS_STATIC:
4047 vis = visibility_local;
4050 case STORAGE_CLASS_EXTERN:
4051 vis = visibility_external_allocated;
4054 case STORAGE_CLASS_NONE:
4055 vis = visibility_external_visible;
4058 case STORAGE_CLASS_THREAD:
4059 vis = visibility_external_visible;
4062 case STORAGE_CLASS_THREAD_EXTERN:
4063 vis = visibility_external_allocated;
4066 case STORAGE_CLASS_THREAD_STATIC:
4067 vis = visibility_local;
4071 var_type = get_tls_type();
4075 var_type = get_glob_type();
4079 create_declaration_entity(declaration,
4080 DECLARATION_KIND_GLOBAL_VARIABLE,
4082 set_entity_visibility(declaration->v.entity, vis);
4084 current_ir_graph = get_const_code_irg();
4085 create_initializer(declaration);
4088 case STORAGE_CLASS_TYPEDEF:
4089 case STORAGE_CLASS_AUTO:
4090 case STORAGE_CLASS_REGISTER:
4091 case STORAGE_CLASS_ENUM_ENTRY:
4094 panic("Invalid storage class for global variable");
4097 static void scope_to_firm(scope_t *scope)
4099 /* first pass: create declarations */
4100 declaration_t *declaration = scope->declarations;
4101 for( ; declaration != NULL; declaration = declaration->next) {
4102 if(declaration->namespc != NAMESPACE_NORMAL)
4104 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4105 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4107 if(declaration->symbol == NULL)
4110 type_t *type = skip_typeref(declaration->type);
4111 if(is_type_function(type)) {
4112 get_function_entity(declaration);
4114 create_global_variable(declaration);
4118 /* second pass: create code */
4119 declaration = scope->declarations;
4120 for( ; declaration != NULL; declaration = declaration->next) {
4121 if(declaration->namespc != NAMESPACE_NORMAL)
4123 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4124 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4126 if(declaration->symbol == NULL)
4129 type_t *type = declaration->type;
4130 if(type->kind != TYPE_FUNCTION)
4133 create_function(declaration);
4137 void init_ast2firm(void)
4139 obstack_init(&asm_obst);
4140 init_atomic_modes();
4142 /* create idents for all known runtime functions */
4143 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
4144 predef_idents[rts_data[i].id] = new_id_from_str(rts_data[i].name);
4148 void exit_ast2firm(void)
4150 obstack_free(&asm_obst, NULL);
4153 void translation_unit_to_firm(translation_unit_t *unit)
4155 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
4156 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
4157 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
4159 ir_type_int = get_ir_type(type_int);
4160 ir_type_const_char = get_ir_type(type_const_char);
4161 ir_type_wchar_t = get_ir_type(type_wchar_t);
4162 ir_type_void = get_ir_type(type_int); /* we don't have a real void
4165 type_void->base.firm_type = ir_type_void;
4167 /* just to be sure */
4168 continue_label = NULL;
4170 current_switch_cond = NULL;
4172 scope_to_firm(&unit->scope);