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 const int align = get_type_alignment_bytes(ir_element_type);
434 set_type_alignment_bytes(ir_type, align);
436 if(type->size != NULL) {
437 int n_elements = fold_constant(type->size);
439 set_array_bounds_int(ir_type, 0, 0, n_elements);
441 size_t elemsize = get_type_size_bytes(ir_element_type);
442 if(elemsize % align > 0) {
443 elemsize += align - (elemsize % align);
445 set_type_size_bytes(ir_type, n_elements * elemsize);
447 set_array_lower_bound_int(ir_type, 0, 0);
449 set_type_state(ir_type, layout_fixed);
455 * Return the signed integer type of size bits.
457 * @param size the size
459 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
462 static ir_mode *s_modes[64 + 1] = {NULL, };
466 if (size <= 0 || size > 64)
469 mode = s_modes[size];
473 snprintf(name, sizeof(name), "bf_I%u", size);
474 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
475 size <= 32 ? 32 : size );
476 s_modes[size] = mode;
480 snprintf(name, sizeof(name), "I%u", size);
481 ident *id = new_id_from_str(name);
482 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
483 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
484 set_primitive_base_type(res, base_tp);
490 * Return the unsigned integer type of size bits.
492 * @param size the size
494 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
497 static ir_mode *u_modes[64 + 1] = {NULL, };
501 if (size <= 0 || size > 64)
504 mode = u_modes[size];
508 snprintf(name, sizeof(name), "bf_U%u", size);
509 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
510 size <= 32 ? 32 : size );
511 u_modes[size] = mode;
516 snprintf(name, sizeof(name), "U%u", size);
517 ident *id = new_id_from_str(name);
518 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
519 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
520 set_primitive_base_type(res, base_tp);
525 static ir_type *create_bitfield_type(bitfield_type_t *const type)
527 type_t *base = skip_typeref(type->base);
528 assert(base->kind == TYPE_ATOMIC);
529 ir_type *irbase = get_ir_type(base);
531 unsigned size = fold_constant(type->size);
533 assert(!is_type_float(base));
534 if(is_type_signed(base)) {
535 return get_signed_int_type_for_bit_size(irbase, size);
537 return get_unsigned_int_type_for_bit_size(irbase, size);
541 #define INVALID_TYPE ((ir_type_ptr)-1)
543 static ir_type *create_struct_type(compound_type_t *type)
545 declaration_t *declaration = type->declaration;
546 if(declaration->v.irtype != NULL) {
547 return declaration->v.irtype;
550 symbol_t *symbol = declaration->symbol;
553 id = unique_ident(symbol->string);
555 id = unique_ident("__anonymous_struct");
557 dbg_info *dbgi = get_dbg_info(&type->type.source_position);
558 ir_type *irtype = new_d_type_struct(id, dbgi);
560 declaration->v.irtype = irtype;
561 type->type.firm_type = irtype;
563 size_t align_all = 1;
565 size_t bit_offset = 0;
566 declaration_t *entry = declaration->scope.declarations;
567 for( ; entry != NULL; entry = entry->next) {
568 if(entry->namespc != NAMESPACE_NORMAL)
571 type_t *entry_type = skip_typeref(entry->type);
572 ir_type *base_irtype;
573 if(entry_type->kind == TYPE_BITFIELD) {
574 base_irtype = get_ir_type(entry_type->bitfield.base);
576 base_irtype = get_ir_type(entry_type);
579 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
580 size_t misalign = offset % entry_alignment;
582 dbg_info *dbgi = get_dbg_info(&entry->source_position);
583 ir_entity *entity = NULL;
584 if(entry->symbol != NULL) {
585 ident *ident = new_id_from_str(entry->symbol->string);
586 ir_type *entry_irtype = get_ir_type(entry_type);
587 entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
589 /* only bitfields are allowed to be anonymous */
590 assert(entry_type->kind == TYPE_BITFIELD);
594 size_t bits_remainder;
595 if(entry_type->kind == TYPE_BITFIELD) {
596 size_t size_bits = fold_constant(entry_type->bitfield.size);
597 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
599 if(size_bits > rest_size_bits) {
600 /* start a new bucket */
601 offset += entry_alignment - misalign;
607 /* put into current bucket */
608 base = offset - misalign;
609 bits_remainder = misalign * 8 + bit_offset;
612 offset += size_bits / 8;
613 bit_offset = bit_offset + (size_bits % 8);
615 size_t entry_size = get_type_size_bytes(base_irtype);
616 if(misalign > 0 || bit_offset > 0)
617 offset += entry_alignment - misalign;
621 offset += entry_size;
625 if(entry_alignment > align_all) {
626 if(entry_alignment % align_all != 0) {
627 panic("uneven alignments not supported yet");
629 align_all = entry_alignment;
633 set_entity_offset(entity, base);
634 set_entity_offset_bits_remainder(entity,
635 (unsigned char) bits_remainder);
636 add_struct_member(irtype, entity);
637 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
638 assert(entry->v.entity == NULL);
639 entry->v.entity = entity;
643 size_t misalign = offset % align_all;
644 if(misalign > 0 || bit_offset > 0) {
645 offset += align_all - misalign;
647 set_type_alignment_bytes(irtype, align_all);
648 set_type_size_bytes(irtype, offset);
649 set_type_state(irtype, layout_fixed);
654 static ir_type *create_union_type(compound_type_t *type)
656 declaration_t *declaration = type->declaration;
657 if(declaration->v.irtype != NULL) {
658 return declaration->v.irtype;
661 symbol_t *symbol = declaration->symbol;
664 id = unique_ident(symbol->string);
666 id = unique_ident("__anonymous_union");
668 dbg_info *dbgi = get_dbg_info(&type->type.source_position);
669 ir_type *irtype = new_d_type_union(id, dbgi);
671 type->type.firm_type = irtype;
675 declaration_t *entry = declaration->scope.declarations;
676 for( ; entry != NULL; entry = entry->next) {
677 if(entry->namespc != NAMESPACE_NORMAL)
680 ident *ident = new_id_from_str(entry->symbol->string);
681 ir_type *entry_ir_type = get_ir_type(entry->type);
683 int entry_size = get_type_size_bytes(entry_ir_type);
684 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
686 dbg_info *const dbgi = get_dbg_info(&entry->source_position);
687 ir_entity *const entity = new_d_entity(irtype, ident, entry_ir_type,
689 add_union_member(irtype, entity);
690 set_entity_offset(entity, 0);
691 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
692 assert(entry->v.entity == NULL);
693 entry->v.entity = entity;
695 if(entry_size > size) {
698 if(entry_alignment > align_all) {
699 if(entry_alignment % align_all != 0) {
700 panic("Uneven alignments not supported yet");
702 align_all = entry_alignment;
706 set_type_alignment_bytes(irtype, align_all);
707 set_type_size_bytes(irtype, size);
708 set_type_state(irtype, layout_fixed);
710 declaration->v.irtype = irtype;
715 static ir_node *expression_to_firm(const expression_t *expression);
716 static inline ir_mode *get_ir_mode(type_t *type);
718 static ir_type *create_enum_type(enum_type_t *const type)
720 type->type.firm_type = ir_type_int;
722 ir_mode *const mode = get_ir_mode((type_t*) type);
723 tarval *const one = get_mode_one(mode);
724 tarval * tv_next = get_tarval_null(mode);
726 declaration_t *declaration = type->declaration->next;
727 for (; declaration != NULL; declaration = declaration->next) {
728 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
731 declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
733 expression_t *const init = declaration->init.enum_value;
735 ir_node *const cnst = expression_to_firm(init);
736 if (!is_Const(cnst)) {
737 panic("couldn't fold constant");
739 tv_next = get_Const_tarval(cnst);
741 declaration->v.enum_val = tv_next;
742 tv_next = tarval_add(tv_next, one);
748 static ir_type *get_ir_type(type_t *type)
750 assert(type != NULL);
752 type = skip_typeref(type);
754 if(type->base.firm_type != NULL) {
755 assert(type->base.firm_type != INVALID_TYPE);
756 return type->base.firm_type;
759 ir_type *firm_type = NULL;
762 panic("error type occured");
764 firm_type = create_atomic_type(&type->atomic);
767 firm_type = create_method_type(&type->function);
770 firm_type = create_pointer_type(&type->pointer);
773 firm_type = create_array_type(&type->array);
775 case TYPE_COMPOUND_STRUCT:
776 firm_type = create_struct_type(&type->compound);
778 case TYPE_COMPOUND_UNION:
779 firm_type = create_union_type(&type->compound);
782 firm_type = create_enum_type(&type->enumt);
785 firm_type = get_ir_type(type->builtin.real_type);
788 firm_type = create_bitfield_type(&type->bitfield);
796 if(firm_type == NULL)
797 panic("unknown type found");
799 type->base.firm_type = firm_type;
803 static inline ir_mode *get_ir_mode(type_t *type)
805 ir_type *irtype = get_ir_type(type);
807 /* firm doesn't report a mode for arrays somehow... */
808 if(is_Array_type(irtype)) {
812 ir_mode *mode = get_type_mode(irtype);
813 assert(mode != NULL);
817 static ident *predef_idents[rts_max];
819 /** Names of the runtime functions. */
820 static const struct {
821 int id; /**< the rts id */
822 int n_res; /**< number of return values */
823 const char *name; /**< the name of the rts function */
824 int n_params; /**< number of parameters */
825 unsigned flags; /**< language flags */
827 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
828 { rts_abort, 0, "abort", 0, _C89 },
829 { rts_abs, 1, "abs", 1, _C89 },
830 { rts_labs, 1, "labs", 1, _C89 },
831 { rts_llabs, 1, "llabs", 1, _C99 },
832 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
834 { rts_fabs, 1, "fabs", 1, _C89 },
835 { rts_sqrt, 1, "sqrt", 1, _C89 },
836 { rts_cbrt, 1, "cbrt", 1, _C99 },
837 { rts_exp, 1, "exp", 1, _C89 },
838 { rts_exp2, 1, "exp2", 1, _C89 },
839 { rts_exp10, 1, "exp10", 1, _GNUC },
840 { rts_log, 1, "log", 1, _C89 },
841 { rts_log2, 1, "log2", 1, _C89 },
842 { rts_log10, 1, "log10", 1, _C89 },
843 { rts_pow, 1, "pow", 2, _C89 },
844 { rts_sin, 1, "sin", 1, _C89 },
845 { rts_cos, 1, "cos", 1, _C89 },
846 { rts_tan, 1, "tan", 1, _C89 },
847 { rts_asin, 1, "asin", 1, _C89 },
848 { rts_acos, 1, "acos", 1, _C89 },
849 { rts_atan, 1, "atan", 1, _C89 },
850 { rts_sinh, 1, "sinh", 1, _C89 },
851 { rts_cosh, 1, "cosh", 1, _C89 },
852 { rts_tanh, 1, "tanh", 1, _C89 },
854 { rts_fabsf, 1, "fabsf", 1, _C99 },
855 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
856 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
857 { rts_expf, 1, "expf", 1, _C99 },
858 { rts_exp2f, 1, "exp2f", 1, _C99 },
859 { rts_exp10f, 1, "exp10f", 1, _GNUC },
860 { rts_logf, 1, "logf", 1, _C99 },
861 { rts_log2f, 1, "log2f", 1, _C99 },
862 { rts_log10f, 1, "log10f", 1, _C99 },
863 { rts_powf, 1, "powf", 2, _C99 },
864 { rts_sinf, 1, "sinf", 1, _C99 },
865 { rts_cosf, 1, "cosf", 1, _C99 },
866 { rts_tanf, 1, "tanf", 1, _C99 },
867 { rts_asinf, 1, "asinf", 1, _C99 },
868 { rts_acosf, 1, "acosf", 1, _C99 },
869 { rts_atanf, 1, "atanf", 1, _C99 },
870 { rts_sinhf, 1, "sinhf", 1, _C99 },
871 { rts_coshf, 1, "coshf", 1, _C99 },
872 { rts_tanhf, 1, "tanhf", 1, _C99 },
874 { rts_fabsl, 1, "fabsl", 1, _C99 },
875 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
876 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
877 { rts_expl, 1, "expl", 1, _C99 },
878 { rts_exp2l, 1, "exp2l", 1, _C99 },
879 { rts_exp10l, 1, "exp10l", 1, _GNUC },
880 { rts_logl, 1, "logl", 1, _C99 },
881 { rts_log2l, 1, "log2l", 1, _C99 },
882 { rts_log10l, 1, "log10l", 1, _C99 },
883 { rts_powl, 1, "powl", 2, _C99 },
884 { rts_sinl, 1, "sinl", 1, _C99 },
885 { rts_cosl, 1, "cosl", 1, _C99 },
886 { rts_tanl, 1, "tanl", 1, _C99 },
887 { rts_asinl, 1, "asinl", 1, _C99 },
888 { rts_acosl, 1, "acosl", 1, _C99 },
889 { rts_atanl, 1, "atanl", 1, _C99 },
890 { rts_sinhl, 1, "sinhl", 1, _C99 },
891 { rts_coshl, 1, "coshl", 1, _C99 },
892 { rts_tanhl, 1, "tanhl", 1, _C99 },
894 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
895 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
896 { rts_strcmp, 1, "strcmp", 2, _C89 },
897 { rts_strncmp, 1, "strncmp", 3, _C89 }
900 static ir_entity* get_function_entity(declaration_t *declaration)
902 if(declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
903 return declaration->v.entity;
904 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
906 symbol_t *symbol = declaration->symbol;
907 ident *id = new_id_from_str(symbol->string);
909 ir_type *global_type = get_glob_type();
910 ir_type *ir_type_method = get_ir_type(declaration->type);
911 assert(is_Method_type(ir_type_method));
913 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
914 ir_entity *const entity = new_d_entity(global_type, id, ir_type_method, dbgi);
915 set_entity_ld_ident(entity, id);
916 if(declaration->storage_class == STORAGE_CLASS_STATIC
917 || declaration->is_inline) {
918 set_entity_visibility(entity, visibility_local);
919 } else if(declaration->init.statement != NULL) {
920 set_entity_visibility(entity, visibility_external_visible);
922 set_entity_visibility(entity, visibility_external_allocated);
924 /* We should check for file scope here, but as long as we compile C only
925 this is not needed. */
926 int n_params = get_method_n_params(ir_type_method);
927 int n_res = get_method_n_ress(ir_type_method);
930 if (n_params == 0 && n_res == 0 && id == predef_idents[rts_abort]) {
931 /* found abort(), store for later */
935 if (! firm_opt.freestanding) {
936 /* check for a known runtime function */
937 for (i = 0; i < rts_max; ++i) {
938 /* ignore those rts functions not necessary needed for current mode */
939 if ((c_mode & rts_data[i].flags) == 0)
941 if (n_params == rts_data[i].n_params && n_res == rts_data[i].n_res &&
942 id == predef_idents[rts_data[i].id])
943 rts_entities[rts_data[i].id] = entity;
948 set_entity_allocation(entity, allocation_static);
950 declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
951 declaration->v.entity = entity;
956 static ir_node *const_to_firm(const const_expression_t *cnst)
958 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
959 ir_mode *mode = get_ir_mode(cnst->base.type);
964 if(mode_is_float(mode)) {
965 tv = new_tarval_from_double(cnst->v.float_value, mode);
967 if(mode_is_signed(mode)) {
968 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
970 len = snprintf(buf, sizeof(buf), "%llu",
971 (unsigned long long) cnst->v.int_value);
973 tv = new_tarval_from_str(buf, len, mode);
976 return new_d_Const(dbgi, mode, tv);
979 static ir_node *char_const_to_firm(const const_expression_t *cnst)
981 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
982 ir_mode *mode = get_ir_mode(cnst->base.type);
985 for (size_t i = 0; i < cnst->v.chars.size; ++i) {
986 v = (v << 8) | ((unsigned char)cnst->v.chars.begin[i]);
989 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
990 tarval *tv = new_tarval_from_str(buf, len, mode);
992 return new_d_Const(dbgi, mode, tv);
995 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
998 assert(entity != NULL);
999 union symconst_symbol sym;
1000 sym.entity_p = entity;
1001 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1004 static ir_node *string_to_firm(const source_position_t *const src_pos,
1005 const char *const id_prefix,
1006 const string_t *const value)
1008 ir_type *const global_type = get_glob_type();
1009 dbg_info *const dbgi = get_dbg_info(src_pos);
1010 ir_type *const type = new_d_type_array(unique_ident("strtype"), 1,
1011 ir_type_const_char, dbgi);
1013 ident *const id = unique_ident(id_prefix);
1014 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1015 set_entity_ld_ident(entity, id);
1016 set_entity_variability(entity, variability_constant);
1017 set_entity_allocation(entity, allocation_static);
1019 ir_type *const elem_type = ir_type_const_char;
1020 ir_mode *const mode = get_type_mode(elem_type);
1022 const char* const string = value->begin;
1023 const size_t slen = value->size;
1025 set_array_lower_bound_int(type, 0, 0);
1026 set_array_upper_bound_int(type, 0, slen);
1027 set_type_size_bytes(type, slen);
1028 set_type_state(type, layout_fixed);
1030 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1031 for(size_t i = 0; i < slen; ++i) {
1032 tvs[i] = new_tarval_from_long(string[i], mode);
1035 set_array_entity_values(entity, tvs, slen);
1038 return create_symconst(dbgi, mode_P_data, entity);
1041 static ir_node *string_literal_to_firm(
1042 const string_literal_expression_t* literal)
1044 return string_to_firm(&literal->base.source_position, "Lstr",
1048 static ir_node *wide_string_literal_to_firm(
1049 const wide_string_literal_expression_t* const literal)
1051 ir_type *const global_type = get_glob_type();
1052 ir_type *const elem_type = ir_type_wchar_t;
1053 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1054 ir_type *const type = new_d_type_array(unique_ident("strtype"), 1,
1057 ident *const id = unique_ident("Lstr");
1058 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1059 set_entity_ld_ident(entity, id);
1060 set_entity_variability(entity, variability_constant);
1061 set_entity_allocation(entity, allocation_static);
1063 ir_mode *const mode = get_type_mode(elem_type);
1065 const wchar_rep_t *const string = literal->value.begin;
1066 const size_t slen = literal->value.size;
1068 set_array_lower_bound_int(type, 0, 0);
1069 set_array_upper_bound_int(type, 0, slen);
1070 set_type_size_bytes(type, slen);
1071 set_type_state(type, layout_fixed);
1073 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1074 for(size_t i = 0; i < slen; ++i) {
1075 tvs[i] = new_tarval_from_long(string[i], mode);
1078 set_array_entity_values(entity, tvs, slen);
1081 return create_symconst(dbgi, mode_P_data, entity);
1084 static ir_node *deref_address(ir_type *const irtype, ir_node *const addr,
1085 dbg_info *const dbgi)
1087 if (is_compound_type(irtype) ||
1088 is_Method_type(irtype) ||
1089 is_Array_type(irtype)) {
1093 ir_mode *const mode = get_type_mode(irtype);
1094 ir_node *const memory = get_store();
1095 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1096 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1097 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1098 set_store(load_mem);
1102 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1104 ir_mode *mode = get_irn_mode(node);
1106 if(!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1108 if(!mode_is_float(mode))
1111 /* check if there is already a Conv */
1112 if (get_irn_op(node) == op_Conv) {
1113 /* convert it into a strict Conv */
1114 set_Conv_strict(node, 1);
1118 /* otherwise create a new one */
1119 return new_d_strictConv(dbgi, node, mode);
1122 static ir_node *get_global_var_address(dbg_info *const dbgi,
1123 const declaration_t *const decl)
1125 assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1127 ir_entity *const entity = decl->v.entity;
1128 switch ((storage_class_tag_t)decl->storage_class) {
1129 case STORAGE_CLASS_THREAD:
1130 case STORAGE_CLASS_THREAD_EXTERN:
1131 case STORAGE_CLASS_THREAD_STATIC: {
1132 ir_node *const no_mem = new_NoMem();
1133 ir_node *const tls = get_irg_tls(current_ir_graph);
1134 return new_d_simpleSel(dbgi, no_mem, tls, entity);
1138 return create_symconst(dbgi, mode_P_data, entity);
1142 /* Returns the correct base address depending on whether it is a parameter or a
1143 * normal local variable */
1144 static ir_node *get_local_frame(ir_entity *const ent)
1146 ir_graph *const irg = current_ir_graph;
1147 const ir_type *const owner = get_entity_owner(ent);
1148 if (owner == get_irg_frame_type(irg)) {
1149 return get_irg_frame(irg);
1151 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1152 return get_irg_value_param_base(irg);
1156 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1158 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1159 declaration_t *declaration = ref->declaration;
1160 type_t *type = skip_typeref(declaration->type);
1162 switch((declaration_kind_t) declaration->declaration_kind) {
1163 case DECLARATION_KIND_UNKNOWN:
1164 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) {
1170 case DECLARATION_KIND_ENUM_ENTRY: {
1171 ir_mode *const mode = get_ir_mode(type);
1172 return new_Const(mode, declaration->v.enum_val);
1175 case DECLARATION_KIND_LOCAL_VARIABLE: {
1176 ir_mode *const mode = get_ir_mode(type);
1177 return get_value(declaration->v.value_number, mode);
1179 case DECLARATION_KIND_FUNCTION: {
1180 ir_mode *const mode = get_ir_mode(type);
1181 return create_symconst(dbgi, mode, declaration->v.entity);
1183 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1184 ir_node *const addr = get_global_var_address(dbgi, declaration);
1185 ir_type *const irtype = get_entity_type(declaration->v.entity);
1186 return deref_address(irtype, addr, dbgi);
1189 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1190 ir_entity *entity = declaration->v.entity;
1191 ir_node *frame = get_local_frame(entity);
1192 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1193 ir_type *irtype = get_entity_type(entity);
1194 return deref_address(irtype, sel, dbgi);
1197 case DECLARATION_KIND_COMPOUND_MEMBER:
1198 case DECLARATION_KIND_LABEL_BLOCK:
1199 panic("not implemented reference type");
1202 panic("reference to declaration with unknown type found");
1205 static ir_node *reference_addr(const reference_expression_t *ref)
1207 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1208 declaration_t *declaration = ref->declaration;
1210 switch((declaration_kind_t) declaration->declaration_kind) {
1211 case DECLARATION_KIND_UNKNOWN:
1213 case DECLARATION_KIND_LOCAL_VARIABLE:
1214 panic("local variable without entity has no address");
1215 case DECLARATION_KIND_FUNCTION: {
1216 type_t *const type = skip_typeref(ref->base.type);
1217 ir_mode *const mode = get_ir_mode(type);
1218 return create_symconst(dbgi, mode, declaration->v.entity);
1220 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1221 ir_node *const addr = get_global_var_address(dbgi, declaration);
1224 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1225 ir_entity *entity = declaration->v.entity;
1226 ir_node *frame = get_local_frame(entity);
1227 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1232 case DECLARATION_KIND_ENUM_ENTRY:
1233 panic("trying to reference enum entry");
1235 case DECLARATION_KIND_COMPOUND_MEMBER:
1236 case DECLARATION_KIND_LABEL_BLOCK:
1237 panic("not implemented reference type");
1240 panic("reference to declaration with unknown type found");
1243 static ir_node *process_builtin_call(const call_expression_t *call)
1245 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1247 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1248 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1250 type_t *type = skip_typeref(builtin->base.type);
1251 assert(is_type_pointer(type));
1253 type_t *function_type = skip_typeref(type->pointer.points_to);
1254 symbol_t *symbol = builtin->symbol;
1256 switch(symbol->ID) {
1257 case T___builtin_alloca: {
1258 if(call->arguments == NULL || call->arguments->next != NULL) {
1259 panic("invalid number of parameters on __builtin_alloca");
1261 expression_t *argument = call->arguments->expression;
1262 ir_node *size = expression_to_firm(argument);
1264 ir_node *store = get_store();
1265 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1267 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1269 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1273 case T___builtin_nan:
1274 case T___builtin_nanf:
1275 case T___builtin_nand: {
1276 /* Ignore string for now... */
1277 assert(is_type_function(function_type));
1278 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1279 tarval *tv = get_mode_NAN(mode);
1280 ir_node *res = new_d_Const(dbgi, mode, tv);
1283 case T___builtin_va_end:
1286 panic("Unsupported builtin found\n");
1290 static ir_node *call_expression_to_firm(const call_expression_t *call)
1292 assert(get_cur_block() != NULL);
1294 expression_t *function = call->function;
1295 if(function->kind == EXPR_BUILTIN_SYMBOL) {
1296 return process_builtin_call(call);
1298 ir_node *callee = expression_to_firm(function);
1300 type_t *type = skip_typeref(function->base.type);
1301 assert(is_type_pointer(type));
1302 pointer_type_t *pointer_type = &type->pointer;
1303 type_t *points_to = skip_typeref(pointer_type->points_to);
1304 assert(is_type_function(points_to));
1305 function_type_t *function_type = &points_to->function;
1307 int n_parameters = 0;
1308 call_argument_t *argument = call->arguments;
1309 for( ; argument != NULL; argument = argument->next) {
1313 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1315 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1316 ir_type *new_method_type = NULL;
1317 if(function_type->variadic || function_type->unspecified_parameters) {
1318 /* we need to construct a new method type matching the call
1320 int n_res = get_method_n_ress(ir_method_type);
1321 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1322 new_method_type = new_d_type_method(unique_ident("calltype"),
1323 n_parameters, n_res, dbgi);
1324 set_method_calling_convention(new_method_type,
1325 get_method_calling_convention(ir_method_type));
1326 set_method_additional_properties(new_method_type,
1327 get_method_additional_properties(ir_method_type));
1329 for(int i = 0; i < n_res; ++i) {
1330 set_method_res_type(new_method_type, i,
1331 get_method_res_type(ir_method_type, i));
1334 ir_node *in[n_parameters];
1336 argument = call->arguments;
1338 for( ; argument != NULL; argument = argument->next) {
1339 expression_t *expression = argument->expression;
1340 ir_node *arg_node = expression_to_firm(expression);
1342 arg_node = do_strict_conv(dbgi, arg_node);
1345 if(new_method_type != NULL) {
1346 ir_type *irtype = get_ir_type(expression->base.type);
1347 set_method_param_type(new_method_type, n, irtype);
1352 assert(n == n_parameters);
1354 if(new_method_type != NULL)
1355 ir_method_type = new_method_type;
1357 ir_node *store = get_store();
1358 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1360 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1363 type_t *return_type = skip_typeref(function_type->return_type);
1364 ir_node *result = NULL;
1366 if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1368 if(is_type_scalar(return_type)) {
1369 mode = get_ir_mode(return_type);
1373 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1374 result = new_d_Proj(dbgi, resproj, mode, 0);
1380 static void statement_to_firm(statement_t *statement);
1381 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1383 static ir_node *expression_to_addr(const expression_t *expression);
1384 static void create_condition_evaluation(const expression_t *expression,
1385 ir_node *true_block,
1386 ir_node *false_block);
1388 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1391 value = do_strict_conv(dbgi, value);
1393 ir_node *memory = get_store();
1395 if(is_type_scalar(type)) {
1396 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1397 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1398 set_store(store_mem);
1400 ir_type *irtype = get_ir_type(type);
1401 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1402 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1403 set_store(copyb_mem);
1407 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1409 tarval *all_one = get_mode_all_one(mode);
1410 int mode_size = get_mode_size_bits(mode);
1412 assert(offset >= 0 && size >= 0);
1413 assert(offset + size <= mode_size);
1414 if(size == mode_size) {
1418 long shiftr = get_mode_size_bits(mode) - size;
1419 long shiftl = offset;
1420 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1421 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1422 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1423 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1428 static void bitfield_store_to_firm(const unary_expression_t *expression,
1431 expression_t *select = expression->value;
1432 assert(select->kind == EXPR_SELECT);
1433 type_t *type = select->base.type;
1434 assert(type->kind == TYPE_BITFIELD);
1435 ir_mode *mode = get_ir_mode(type->bitfield.base);
1436 ir_node *addr = expression_to_addr(select);
1438 assert(get_irn_mode(value) == mode);
1440 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1442 /* kill upper bits of value and shift to right position */
1443 ir_entity *entity = select->select.compound_entry->v.entity;
1444 int bitoffset = get_entity_offset_bits_remainder(entity);
1445 ir_type *entity_type = get_entity_type(entity);
1446 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1448 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1449 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1450 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1451 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1452 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1453 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1455 /* load current value */
1456 ir_node *mem = get_store();
1457 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1458 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1459 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1460 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1461 tarval *inv_mask = tarval_not(shift_mask);
1462 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1463 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1465 /* construct new value and store */
1466 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1467 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1468 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1469 set_store(store_mem);
1472 static void set_value_for_expression(const expression_t *expression,
1475 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1476 value = do_strict_conv(dbgi, value);
1478 if(expression->kind == EXPR_REFERENCE) {
1479 const reference_expression_t *ref = &expression->reference;
1481 declaration_t *declaration = ref->declaration;
1482 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1483 if(declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1484 set_value(declaration->v.value_number, value);
1489 if(expression->kind == EXPR_UNARY_BITFIELD_EXTRACT) {
1490 bitfield_store_to_firm(&expression->unary, value);
1494 ir_node *addr = expression_to_addr(expression);
1495 type_t *type = skip_typeref(expression->base.type);
1496 assign_value(dbgi, addr, type, value);
1499 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1501 ir_mode *value_mode = get_irn_mode(value);
1503 if (value_mode == dest_mode || is_Bad(value))
1506 if(dest_mode == mode_b) {
1507 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1508 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1509 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1513 return new_d_Conv(dbgi, value, dest_mode);
1516 static ir_node *create_incdec(const unary_expression_t *expression)
1518 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1519 type_t *type = skip_typeref(expression->base.type);
1520 ir_mode *mode = get_ir_mode(type);
1521 expression_t *value = expression->value;
1523 ir_node *value_node = expression_to_firm(value);
1526 if(is_type_pointer(type)) {
1527 pointer_type_t *pointer_type = &type->pointer;
1528 unsigned elem_size = get_type_size(pointer_type->points_to);
1529 offset = new_Const_long(mode_int, elem_size);
1531 assert(is_type_arithmetic(type));
1532 offset = new_Const(mode, get_mode_one(mode));
1535 switch(expression->base.kind) {
1536 case EXPR_UNARY_POSTFIX_INCREMENT: {
1537 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1538 set_value_for_expression(value, new_value);
1541 case EXPR_UNARY_POSTFIX_DECREMENT: {
1542 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1543 set_value_for_expression(value, new_value);
1546 case EXPR_UNARY_PREFIX_INCREMENT: {
1547 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1548 set_value_for_expression(value, new_value);
1551 case EXPR_UNARY_PREFIX_DECREMENT: {
1552 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1553 set_value_for_expression(value, new_value);
1557 panic("no incdec expr in create_incdec");
1562 static bool is_local_variable(expression_t *expression)
1564 if (expression->kind != EXPR_REFERENCE)
1566 reference_expression_t *ref_expr = &expression->reference;
1567 declaration_t *declaration = ref_expr->declaration;
1568 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
1571 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
1574 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1575 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1576 case EXPR_BINARY_NOTEQUAL:
1577 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
1578 case EXPR_BINARY_ISLESS:
1579 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
1580 case EXPR_BINARY_ISLESSEQUAL:
1581 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
1582 case EXPR_BINARY_ISGREATER:
1583 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
1584 case EXPR_BINARY_ISGREATEREQUAL:
1585 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
1586 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
1591 panic("trying to get pn_Cmp from non-comparison binexpr type");
1595 * Handle the assume optimizer hint: check if a Confirm
1596 * node can be created.
1598 * @param dbi debug info
1599 * @param expr the IL assume expression
1601 * we support here only some simple cases:
1606 static ir_node *handle_assume_compare(dbg_info *dbi,
1607 const binary_expression_t *expression)
1609 expression_t *op1 = expression->left;
1610 expression_t *op2 = expression->right;
1611 declaration_t *var2, *var = NULL;
1612 ir_node *res = NULL;
1615 cmp_val = get_pnc(expression->base.kind, op1->base.type);
1617 if (is_local_variable(op1) && is_local_variable(op2)) {
1618 var = op1->reference.declaration;
1619 var2 = op2->reference.declaration;
1621 type_t *const type = skip_typeref(var->type);
1622 ir_mode *const mode = get_ir_mode(type);
1624 ir_node *const irn1 = get_value(var->v.value_number, mode);
1625 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1627 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1628 set_value(var2->v.value_number, res);
1630 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
1631 set_value(var->v.value_number, res);
1637 if (is_local_variable(op1) && is_constant_expression(op2)) {
1638 var = op1->reference.declaration;
1640 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
1641 cmp_val = get_inversed_pnc(cmp_val);
1642 var = op2->reference.declaration;
1647 type_t *const type = skip_typeref(var->type);
1648 ir_mode *const mode = get_ir_mode(type);
1650 res = get_value(var->v.value_number, mode);
1651 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
1652 set_value(var->v.value_number, res);
1658 * Handle the assume optimizer hint.
1660 * @param dbi debug info
1661 * @param expr the IL assume expression
1663 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
1664 switch(expression->kind) {
1665 case EXPR_BINARY_EQUAL:
1666 case EXPR_BINARY_NOTEQUAL:
1667 case EXPR_BINARY_LESS:
1668 case EXPR_BINARY_LESSEQUAL:
1669 case EXPR_BINARY_GREATER:
1670 case EXPR_BINARY_GREATEREQUAL:
1671 return handle_assume_compare(dbi, &expression->binary);
1677 static ir_node *bitfield_extract_to_firm(const unary_expression_t *expression)
1679 expression_t *select = expression->value;
1680 assert(select->kind == EXPR_SELECT);
1682 type_t *type = select->base.type;
1683 assert(type->kind == TYPE_BITFIELD);
1684 ir_mode *mode = get_ir_mode(type->bitfield.base);
1685 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1686 ir_node *addr = expression_to_addr(select);
1687 ir_node *mem = get_store();
1688 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1689 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1690 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1692 load_res = create_conv(dbgi, load_res, mode_int);
1694 set_store(load_mem);
1696 /* kill upper bits */
1697 ir_entity *entity = select->select.compound_entry->v.entity;
1698 int bitoffset = get_entity_offset_bits_remainder(entity);
1699 ir_type *entity_type = get_entity_type(entity);
1700 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1701 long shift_bitsl = machine_size - bitoffset - bitsize;
1702 assert(shift_bitsl >= 0);
1703 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1704 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1705 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1707 long shift_bitsr = bitoffset + shift_bitsl;
1708 assert(shift_bitsr <= (long) machine_size);
1709 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1710 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1712 if(mode_is_signed(mode)) {
1713 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1715 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1718 return create_conv(dbgi, shiftr, mode);
1721 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
1723 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1724 type_t *type = skip_typeref(expression->base.type);
1726 if(expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
1727 return expression_to_addr(expression->value);
1729 const expression_t *value = expression->value;
1731 switch(expression->base.kind) {
1732 case EXPR_UNARY_NEGATE: {
1733 ir_node *value_node = expression_to_firm(value);
1734 ir_mode *mode = get_ir_mode(type);
1735 return new_d_Minus(dbgi, value_node, mode);
1737 case EXPR_UNARY_PLUS:
1738 return expression_to_firm(value);
1739 case EXPR_UNARY_BITWISE_NEGATE: {
1740 ir_node *value_node = expression_to_firm(value);
1741 ir_mode *mode = get_ir_mode(type);
1742 return new_d_Not(dbgi, value_node, mode);
1744 case EXPR_UNARY_NOT: {
1745 ir_node *value_node = expression_to_firm(value);
1746 ir_mode *mode = get_ir_mode(type);
1747 if(get_irn_mode(value_node) != mode_b) {
1748 value_node = create_conv(dbgi, value_node, mode_b);
1750 value_node = new_d_Not(dbgi, value_node, mode_b);
1751 if(mode != mode_b) {
1752 value_node = create_conv(dbgi, value_node, mode);
1756 case EXPR_UNARY_DEREFERENCE: {
1757 ir_node *value_node = expression_to_firm(value);
1758 type_t *value_type = skip_typeref(value->base.type);
1759 ir_type *irtype = get_ir_type(value_type);
1760 assert(is_Pointer_type(irtype));
1761 ir_type *points_to = get_pointer_points_to_type(irtype);
1762 return deref_address(points_to, value_node, dbgi);
1764 case EXPR_UNARY_POSTFIX_INCREMENT:
1765 case EXPR_UNARY_POSTFIX_DECREMENT:
1766 case EXPR_UNARY_PREFIX_INCREMENT:
1767 case EXPR_UNARY_PREFIX_DECREMENT:
1768 return create_incdec(expression);
1769 case EXPR_UNARY_CAST: {
1770 ir_node *value_node = expression_to_firm(value);
1771 if(is_type_scalar(type)) {
1772 ir_mode *mode = get_ir_mode(type);
1773 ir_node *node = create_conv(dbgi, value_node, mode);
1774 node = do_strict_conv(dbgi, node);
1780 case EXPR_UNARY_CAST_IMPLICIT: {
1781 ir_node *value_node = expression_to_firm(value);
1782 if(is_type_scalar(type)) {
1783 ir_mode *mode = get_ir_mode(type);
1784 return create_conv(dbgi, value_node, mode);
1789 case EXPR_UNARY_ASSUME:
1790 if(firm_opt.confirm)
1791 return handle_assume(dbgi, value);
1794 case EXPR_UNARY_BITFIELD_EXTRACT:
1795 return bitfield_extract_to_firm(expression);
1800 panic("invalid UNEXPR type found");
1803 static ir_node *create_lazy_op(const binary_expression_t *expression)
1805 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1806 type_t *type = expression->base.type;
1807 ir_mode *mode = get_ir_mode(type);
1809 if(is_constant_expression(expression->left)) {
1810 long val = fold_constant(expression->left);
1811 expression_kind_t ekind = expression->base.kind;
1812 if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
1813 || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
1814 return expression_to_firm(expression->right);
1816 assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
1817 || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
1818 return new_Const(mode, get_mode_one(mode));
1822 ir_node *cur_block = get_cur_block();
1824 ir_node *one_block = new_immBlock();
1825 ir_node *one = new_Const(mode, get_mode_one(mode));
1826 ir_node *jmp_one = new_d_Jmp(dbgi);
1828 ir_node *zero_block = new_immBlock();
1829 ir_node *zero = new_Const(mode, get_mode_null(mode));
1830 ir_node *jmp_zero = new_d_Jmp(dbgi);
1832 set_cur_block(cur_block);
1833 create_condition_evaluation((const expression_t*) expression,
1834 one_block, zero_block);
1835 mature_immBlock(one_block);
1836 mature_immBlock(zero_block);
1838 ir_node *common_block = new_immBlock();
1839 add_immBlock_pred(common_block, jmp_one);
1840 add_immBlock_pred(common_block, jmp_zero);
1841 mature_immBlock(common_block);
1843 ir_node *in[2] = { one, zero };
1844 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1849 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
1850 ir_node *right, ir_mode *mode);
1852 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
1853 create_arithmetic_func func)
1855 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1856 ir_node *left = expression_to_firm(expression->left);
1857 ir_node *right = expression_to_firm(expression->right);
1858 type_t *type = expression->right->base.type;
1859 /* be careful with the modes, because in arithmetic assign nodes only
1860 * the right operand has the mode of the arithmetic already */
1861 ir_mode *mode = get_ir_mode(type);
1862 left = create_conv(dbgi, left, mode);
1863 ir_node *res = func(dbgi, left, right, mode);
1868 static ir_node *pointer_arithmetic(ir_node *const pointer,
1871 dbg_info *const dbgi,
1872 const create_arithmetic_func func)
1874 pointer_type_t *const pointer_type = &type->pointer;
1875 type_t *const points_to = pointer_type->points_to;
1876 const unsigned elem_size = get_type_size(points_to);
1878 assert(elem_size >= 1);
1879 if (elem_size > 1) {
1880 integer = create_conv(dbgi, integer, mode_int);
1881 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
1882 ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_int);
1886 ir_mode *const mode = get_ir_mode(type);
1887 return func(dbgi, pointer, integer, mode);
1890 static ir_node *create_arithmetic_assign_binop(
1891 const binary_expression_t *expression, create_arithmetic_func func)
1893 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1894 type_t *const type = skip_typeref(expression->base.type);
1897 if (is_type_pointer(type)) {
1898 ir_node *const pointer = expression_to_firm(expression->left);
1899 ir_node * integer = expression_to_firm(expression->right);
1900 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
1902 value = create_arithmetic_binop(expression, func);
1905 ir_mode *const mode = get_ir_mode(type);
1906 value = create_conv(dbgi, value, mode);
1907 set_value_for_expression(expression->left, value);
1912 static ir_node *create_add(const binary_expression_t *expression)
1914 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1915 ir_node *left = expression_to_firm(expression->left);
1916 ir_node *right = expression_to_firm(expression->right);
1917 type_t *type = expression->base.type;
1919 expression_t *expr_left = expression->left;
1920 expression_t *expr_right = expression->right;
1921 type_t *type_left = skip_typeref(expr_left->base.type);
1922 type_t *type_right = skip_typeref(expr_right->base.type);
1924 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1925 ir_mode *const mode = get_ir_mode(type);
1926 return new_d_Add(dbgi, left, right, mode);
1929 if (is_type_pointer(type_left)) {
1930 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
1932 assert(is_type_pointer(type_right));
1933 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
1937 static ir_node *create_sub(const binary_expression_t *expression)
1939 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1940 expression_t *const expr_left = expression->left;
1941 expression_t *const expr_right = expression->right;
1942 ir_node *const left = expression_to_firm(expr_left);
1943 ir_node *const right = expression_to_firm(expr_right);
1944 type_t *const type = expression->base.type;
1945 type_t *const type_left = skip_typeref(expr_left->base.type);
1946 type_t *const type_right = skip_typeref(expr_right->base.type);
1948 if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1949 ir_mode *const mode = get_ir_mode(type);
1950 return new_d_Sub(dbgi, left, right, mode);
1951 } else if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
1952 const pointer_type_t *const ptr_type = &type_left->pointer;
1953 const unsigned elem_size = get_type_size(ptr_type->points_to);
1954 ir_mode *const mode = get_ir_mode(type);
1955 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
1956 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
1957 ir_node *const no_mem = new_NoMem();
1958 ir_node *const div = new_d_Div(dbgi, no_mem, sub, cnst, mode,
1959 op_pin_state_floats);
1960 return new_d_Proj(dbgi, div, mode, pn_Div_res);
1963 assert(is_type_pointer(type_left));
1964 return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
1967 static ir_node *create_shift(const binary_expression_t *expression)
1969 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1970 ir_node *left = expression_to_firm(expression->left);
1971 ir_node *right = expression_to_firm(expression->right);
1972 type_t *type = expression->base.type;
1973 ir_mode *mode = get_ir_mode(type);
1975 /* firm always wants the shift count to be unsigned */
1976 right = create_conv(dbgi, right, mode_uint);
1980 switch(expression->base.kind) {
1981 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
1982 case EXPR_BINARY_SHIFTLEFT:
1983 res = new_d_Shl(dbgi, left, right, mode);
1985 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
1986 case EXPR_BINARY_SHIFTRIGHT: {
1987 expression_t *expr_left = expression->left;
1988 type_t *type_left = skip_typeref(expr_left->base.type);
1990 if(is_type_signed(type_left)) {
1991 res = new_d_Shrs(dbgi, left, right, mode);
1993 res = new_d_Shr(dbgi, left, right, mode);
1998 panic("create shift op called for non-shift op");
2005 static ir_node *create_divmod(const binary_expression_t *expression)
2007 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2008 ir_node *left = expression_to_firm(expression->left);
2009 ir_node *right = expression_to_firm(expression->right);
2010 ir_node *pin = new_Pin(new_NoMem());
2011 /* be careful with the modes, because in arithmetic assign nodes only
2012 * the right operand has the mode of the arithmetic already */
2013 type_t *type = expression->right->base.type;
2014 ir_mode *mode = get_ir_mode(type);
2015 left = create_conv(dbgi, left, mode);
2019 switch (expression->base.kind) {
2020 case EXPR_BINARY_DIV:
2021 case EXPR_BINARY_DIV_ASSIGN:
2022 if(mode_is_float(mode)) {
2023 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2024 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2026 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2027 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2031 case EXPR_BINARY_MOD:
2032 case EXPR_BINARY_MOD_ASSIGN:
2033 assert(!mode_is_float(mode));
2034 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
2035 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2038 default: panic("unexpected binary expression type in create_divmod()");
2044 static ir_node *create_arithmetic_assign_divmod(
2045 const binary_expression_t *expression)
2047 ir_node * value = create_divmod(expression);
2048 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2049 type_t *const type = expression->base.type;
2050 ir_mode *const mode = get_ir_mode(type);
2052 assert(type->kind != TYPE_POINTER);
2054 value = create_conv(dbgi, value, mode);
2055 set_value_for_expression(expression->left, value);
2060 static ir_node *create_arithmetic_assign_shift(
2061 const binary_expression_t *expression)
2063 ir_node * value = create_shift(expression);
2064 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2065 type_t *const type = expression->base.type;
2066 ir_mode *const mode = get_ir_mode(type);
2068 value = create_conv(dbgi, value, mode);
2069 set_value_for_expression(expression->left, value);
2074 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2076 expression_kind_t kind = expression->base.kind;
2079 case EXPR_BINARY_EQUAL:
2080 case EXPR_BINARY_NOTEQUAL:
2081 case EXPR_BINARY_LESS:
2082 case EXPR_BINARY_LESSEQUAL:
2083 case EXPR_BINARY_GREATER:
2084 case EXPR_BINARY_GREATEREQUAL:
2085 case EXPR_BINARY_ISGREATER:
2086 case EXPR_BINARY_ISGREATEREQUAL:
2087 case EXPR_BINARY_ISLESS:
2088 case EXPR_BINARY_ISLESSEQUAL:
2089 case EXPR_BINARY_ISLESSGREATER:
2090 case EXPR_BINARY_ISUNORDERED: {
2091 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2092 ir_node *left = expression_to_firm(expression->left);
2093 ir_node *right = expression_to_firm(expression->right);
2094 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2095 long pnc = get_pnc(kind, expression->left->base.type);
2096 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2099 case EXPR_BINARY_ASSIGN: {
2100 ir_node *right = expression_to_firm(expression->right);
2101 set_value_for_expression(expression->left, right);
2105 case EXPR_BINARY_ADD:
2106 return create_add(expression);
2107 case EXPR_BINARY_SUB:
2108 return create_sub(expression);
2109 case EXPR_BINARY_MUL:
2110 return create_arithmetic_binop(expression, new_d_Mul);
2111 case EXPR_BINARY_BITWISE_AND:
2112 return create_arithmetic_binop(expression, new_d_And);
2113 case EXPR_BINARY_BITWISE_OR:
2114 return create_arithmetic_binop(expression, new_d_Or);
2115 case EXPR_BINARY_BITWISE_XOR:
2116 return create_arithmetic_binop(expression, new_d_Eor);
2117 case EXPR_BINARY_SHIFTLEFT:
2118 case EXPR_BINARY_SHIFTRIGHT:
2119 return create_shift(expression);
2120 case EXPR_BINARY_DIV:
2121 case EXPR_BINARY_MOD:
2122 return create_divmod(expression);
2123 case EXPR_BINARY_LOGICAL_AND:
2124 case EXPR_BINARY_LOGICAL_OR:
2125 return create_lazy_op(expression);
2126 case EXPR_BINARY_COMMA:
2127 expression_to_firm(expression->left);
2128 return expression_to_firm(expression->right);
2129 case EXPR_BINARY_ADD_ASSIGN:
2130 return create_arithmetic_assign_binop(expression, new_d_Add);
2131 case EXPR_BINARY_SUB_ASSIGN:
2132 return create_arithmetic_assign_binop(expression, new_d_Sub);
2133 case EXPR_BINARY_MUL_ASSIGN:
2134 return create_arithmetic_assign_binop(expression, new_d_Mul);
2135 case EXPR_BINARY_MOD_ASSIGN:
2136 case EXPR_BINARY_DIV_ASSIGN:
2137 return create_arithmetic_assign_divmod(expression);
2138 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2139 return create_arithmetic_assign_binop(expression, new_d_And);
2140 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2141 return create_arithmetic_assign_binop(expression, new_d_Or);
2142 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2143 return create_arithmetic_assign_binop(expression, new_d_Eor);
2144 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2145 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2146 return create_arithmetic_assign_shift(expression);
2147 case EXPR_BINARY_BUILTIN_EXPECT:
2148 return expression_to_firm(expression->left);
2150 panic("TODO binexpr type");
2154 static ir_node *array_access_addr(const array_access_expression_t *expression)
2156 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2157 ir_node *base_addr = expression_to_firm(expression->array_ref);
2158 ir_node *offset = expression_to_firm(expression->index);
2159 offset = create_conv(dbgi, offset, mode_uint);
2161 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2162 assert(is_type_pointer(ref_type));
2163 pointer_type_t *pointer_type = &ref_type->pointer;
2165 unsigned elem_size = get_type_size(pointer_type->points_to);
2166 ir_node *elem_size_const = new_Const_long(mode_uint, elem_size);
2167 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2169 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2174 static ir_node *array_access_to_firm(
2175 const array_access_expression_t *expression)
2177 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2178 ir_node *addr = array_access_addr(expression);
2179 type_t *type = revert_automatic_type_conversion(
2180 (const expression_t*) expression);
2181 type = skip_typeref(type);
2182 ir_type *irtype = get_ir_type(type);
2184 return deref_address(irtype, addr, dbgi);
2188 * Transform a sizeof expression into Firm code.
2190 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2192 type_t *type = expression->type;
2194 type = expression->tp_expression->base.type;
2195 assert(type != NULL);
2198 ir_mode *const mode = get_ir_mode(expression->base.type);
2199 symconst_symbol sym;
2200 sym.type_p = get_ir_type(type);
2201 return new_SymConst(mode, sym, symconst_type_size);
2205 * Transform an alignof expression into Firm code.
2207 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2209 type_t *type = expression->type;
2211 /* beware: if expression is a variable reference, return the
2212 alignment of the variable. */
2213 const expression_t *tp_expression = expression->tp_expression;
2214 const declaration_t *declaration = expr_is_variable(tp_expression);
2215 if (declaration != NULL) {
2216 /* TODO: get the alignment of this variable. */
2218 type = tp_expression->base.type;
2219 assert(type != NULL);
2222 ir_mode *const mode = get_ir_mode(expression->base.type);
2223 symconst_symbol sym;
2224 sym.type_p = get_ir_type(type);
2225 return new_SymConst(mode, sym, symconst_type_align);
2228 static long fold_constant(const expression_t *expression)
2230 assert(is_constant_expression(expression));
2232 ir_graph *old_current_ir_graph = current_ir_graph;
2233 if(current_ir_graph == NULL) {
2234 current_ir_graph = get_const_code_irg();
2237 ir_node *cnst = expression_to_firm(expression);
2238 current_ir_graph = old_current_ir_graph;
2240 if(!is_Const(cnst)) {
2241 panic("couldn't fold constant\n");
2244 tarval *tv = get_Const_tarval(cnst);
2245 if(!tarval_is_long(tv)) {
2246 panic("result of constant folding is not integer\n");
2249 return get_tarval_long(tv);
2252 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2254 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2256 /* first try to fold a constant condition */
2257 if(is_constant_expression(expression->condition)) {
2258 long val = fold_constant(expression->condition);
2260 return expression_to_firm(expression->true_expression);
2262 return expression_to_firm(expression->false_expression);
2266 ir_node *cur_block = get_cur_block();
2268 /* create the true block */
2269 ir_node *true_block = new_immBlock();
2271 ir_node *true_val = expression_to_firm(expression->true_expression);
2272 ir_node *true_jmp = new_Jmp();
2274 /* create the false block */
2275 ir_node *false_block = new_immBlock();
2277 ir_node *false_val = expression_to_firm(expression->false_expression);
2278 ir_node *false_jmp = new_Jmp();
2280 /* create the condition evaluation */
2281 set_cur_block(cur_block);
2282 create_condition_evaluation(expression->condition, true_block, false_block);
2283 mature_immBlock(true_block);
2284 mature_immBlock(false_block);
2286 /* create the common block */
2287 ir_node *common_block = new_immBlock();
2288 add_immBlock_pred(common_block, true_jmp);
2289 add_immBlock_pred(common_block, false_jmp);
2290 mature_immBlock(common_block);
2292 /* TODO improve static semantics, so either both or no values are NULL */
2293 if (true_val == NULL || false_val == NULL)
2296 ir_node *in[2] = { true_val, false_val };
2297 ir_mode *mode = get_irn_mode(true_val);
2298 assert(get_irn_mode(false_val) == mode);
2299 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2304 static ir_node *select_addr(const select_expression_t *expression)
2306 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2308 ir_node *compound_addr = expression_to_firm(expression->compound);
2310 declaration_t *entry = expression->compound_entry;
2311 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2312 ir_entity *entity = entry->v.entity;
2314 assert(entity != NULL);
2316 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2321 static ir_node *select_to_firm(const select_expression_t *expression)
2323 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2324 ir_node *addr = select_addr(expression);
2325 type_t *type = revert_automatic_type_conversion(
2326 (const expression_t*) expression);
2327 type = skip_typeref(type);
2328 ir_type *irtype = get_ir_type(type);
2330 return deref_address(irtype, addr, dbgi);
2333 /* Values returned by __builtin_classify_type. */
2334 typedef enum gcc_type_class
2340 enumeral_type_class,
2343 reference_type_class,
2347 function_type_class,
2358 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2360 const type_t *const type = expr->type_expression->base.type;
2366 const atomic_type_t *const atomic_type = &type->atomic;
2367 switch (atomic_type->akind) {
2368 /* should not be reached */
2369 case ATOMIC_TYPE_INVALID:
2373 /* gcc cannot do that */
2374 case ATOMIC_TYPE_VOID:
2375 tc = void_type_class;
2378 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2379 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2380 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2381 case ATOMIC_TYPE_SHORT:
2382 case ATOMIC_TYPE_USHORT:
2383 case ATOMIC_TYPE_INT:
2384 case ATOMIC_TYPE_UINT:
2385 case ATOMIC_TYPE_LONG:
2386 case ATOMIC_TYPE_ULONG:
2387 case ATOMIC_TYPE_LONGLONG:
2388 case ATOMIC_TYPE_ULONGLONG:
2389 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2390 tc = integer_type_class;
2393 case ATOMIC_TYPE_FLOAT:
2394 case ATOMIC_TYPE_DOUBLE:
2395 case ATOMIC_TYPE_LONG_DOUBLE:
2396 tc = real_type_class;
2399 #ifdef PROVIDE_COMPLEX
2400 case ATOMIC_TYPE_FLOAT_COMPLEX:
2401 case ATOMIC_TYPE_DOUBLE_COMPLEX:
2402 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
2403 tc = complex_type_class;
2405 case ATOMIC_TYPE_FLOAT_IMAGINARY:
2406 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
2407 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
2408 tc = complex_type_class;
2413 panic("Unimplemented case in classify_type_to_firm().");
2418 case TYPE_ARRAY: /* gcc handles this as pointer */
2419 case TYPE_FUNCTION: /* gcc handles this as pointer */
2420 case TYPE_POINTER: tc = pointer_type_class; break;
2421 case TYPE_COMPOUND_STRUCT: tc = record_type_class; break;
2422 case TYPE_COMPOUND_UNION: tc = union_type_class; break;
2424 /* gcc handles this as integer */
2425 case TYPE_ENUM: tc = integer_type_class; break;
2428 panic("Unimplemented case in classify_type_to_firm().");
2431 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2432 ir_mode *const mode = mode_int;
2433 tarval *const tv = new_tarval_from_long(tc, mode);
2434 return new_d_Const(dbgi, mode, tv);
2437 static ir_node *function_name_to_firm(
2438 const string_literal_expression_t *const expr)
2440 if (current_function_name == NULL) {
2441 const source_position_t *const src_pos = &expr->base.source_position;
2442 const char *const name = current_function_decl->symbol->string;
2443 const string_t string = { name, strlen(name) + 1 };
2444 current_function_name = string_to_firm(src_pos, "__func__", &string);
2447 return current_function_name;
2450 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2452 statement_t *statement = expr->statement;
2454 assert(statement->kind == STATEMENT_COMPOUND);
2455 return compound_statement_to_firm(&statement->compound);
2458 static ir_node *va_start_expression_to_firm(
2459 const va_start_expression_t *const expr)
2461 ir_type *const method_type = get_ir_type(current_function_decl->type);
2462 int const n = get_method_n_params(method_type) - 1;
2463 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2464 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2465 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2466 ir_node *const no_mem = new_NoMem();
2467 ir_node *const arg_sel =
2468 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2470 size_t const parm_size = get_type_size(expr->parameter->type);
2471 ir_node *const cnst = new_Const_long(mode_uint, parm_size);
2472 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2473 set_value_for_expression(expr->ap, add);
2478 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2480 ir_type *const irtype = get_ir_type(expr->base.type);
2481 ir_node *const ap = expression_to_firm(expr->ap);
2482 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2483 ir_node *const res = deref_address(irtype, ap, dbgi);
2485 size_t const parm_size = get_type_size(expr->base.type);
2486 ir_node *const cnst = new_Const_long(mode_uint, parm_size);
2487 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2488 set_value_for_expression(expr->ap, add);
2493 static ir_node *dereference_addr(const unary_expression_t *const expression)
2495 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2496 return expression_to_firm(expression->value);
2499 static ir_node *expression_to_addr(const expression_t *expression)
2501 switch(expression->kind) {
2502 case EXPR_REFERENCE:
2503 return reference_addr(&expression->reference);
2504 case EXPR_ARRAY_ACCESS:
2505 return array_access_addr(&expression->array_access);
2507 return select_addr(&expression->select);
2509 return call_expression_to_firm(&expression->call);
2510 case EXPR_UNARY_DEREFERENCE: {
2511 return dereference_addr(&expression->unary);
2516 panic("trying to get address of non-lvalue");
2519 static ir_node *builtin_constant_to_firm(
2520 const builtin_constant_expression_t *expression)
2522 ir_mode *mode = get_ir_mode(expression->base.type);
2525 if (is_constant_expression(expression->value)) {
2530 return new_Const_long(mode, v);
2533 static ir_node *builtin_prefetch_to_firm(
2534 const builtin_prefetch_expression_t *expression)
2536 ir_node *adr = expression_to_firm(expression->adr);
2537 /* no Firm support for prefetch yet */
2542 static ir_node *_expression_to_firm(const expression_t *expression)
2544 switch(expression->kind) {
2545 case EXPR_CHAR_CONST:
2546 return char_const_to_firm(&expression->conste);
2548 return const_to_firm(&expression->conste);
2549 case EXPR_STRING_LITERAL:
2550 return string_literal_to_firm(&expression->string);
2551 case EXPR_WIDE_STRING_LITERAL:
2552 return wide_string_literal_to_firm(&expression->wide_string);
2553 case EXPR_REFERENCE:
2554 return reference_expression_to_firm(&expression->reference);
2556 return call_expression_to_firm(&expression->call);
2558 return unary_expression_to_firm(&expression->unary);
2560 return binary_expression_to_firm(&expression->binary);
2561 case EXPR_ARRAY_ACCESS:
2562 return array_access_to_firm(&expression->array_access);
2564 return sizeof_to_firm(&expression->typeprop);
2566 return alignof_to_firm(&expression->typeprop);
2567 case EXPR_CONDITIONAL:
2568 return conditional_to_firm(&expression->conditional);
2570 return select_to_firm(&expression->select);
2571 case EXPR_CLASSIFY_TYPE:
2572 return classify_type_to_firm(&expression->classify_type);
2574 case EXPR_PRETTY_FUNCTION:
2575 return function_name_to_firm(&expression->string);
2576 case EXPR_STATEMENT:
2577 return statement_expression_to_firm(&expression->statement);
2579 return va_start_expression_to_firm(&expression->va_starte);
2581 return va_arg_expression_to_firm(&expression->va_arge);
2583 case EXPR_BUILTIN_SYMBOL:
2584 panic("unimplemented expression found");
2585 case EXPR_BUILTIN_CONSTANT_P:
2586 return builtin_constant_to_firm(&expression->builtin_constant);
2587 case EXPR_BUILTIN_PREFETCH:
2588 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
2594 panic("invalid expression found");
2597 static ir_node *expression_to_firm(const expression_t *expression)
2599 ir_node *res = _expression_to_firm(expression);
2601 if(res != NULL && get_irn_mode(res) == mode_b) {
2602 ir_mode *mode = get_ir_mode(expression->base.type);
2603 res = create_conv(NULL, res, mode);
2609 static ir_node *expression_to_modeb(const expression_t *expression)
2611 ir_node *res = _expression_to_firm(expression);
2612 res = create_conv(NULL, res, mode_b);
2618 * create a short-circuit expression evaluation that tries to construct
2619 * efficient control flow structures for &&, || and ! expressions
2621 static void create_condition_evaluation(const expression_t *expression,
2622 ir_node *true_block,
2623 ir_node *false_block)
2625 switch(expression->kind) {
2626 case EXPR_UNARY_NOT: {
2627 const unary_expression_t *unary_expression = &expression->unary;
2628 create_condition_evaluation(unary_expression->value, false_block,
2632 case EXPR_BINARY_LOGICAL_AND: {
2633 const binary_expression_t *binary_expression = &expression->binary;
2635 ir_node *cur_block = get_cur_block();
2636 ir_node *extra_block = new_immBlock();
2637 set_cur_block(cur_block);
2638 create_condition_evaluation(binary_expression->left, extra_block,
2640 mature_immBlock(extra_block);
2641 set_cur_block(extra_block);
2642 create_condition_evaluation(binary_expression->right, true_block,
2646 case EXPR_BINARY_LOGICAL_OR: {
2647 const binary_expression_t *binary_expression = &expression->binary;
2649 ir_node *cur_block = get_cur_block();
2650 ir_node *extra_block = new_immBlock();
2651 set_cur_block(cur_block);
2652 create_condition_evaluation(binary_expression->left, true_block,
2654 mature_immBlock(extra_block);
2655 set_cur_block(extra_block);
2656 create_condition_evaluation(binary_expression->right, true_block,
2664 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2665 ir_node *condition = expression_to_modeb(expression);
2666 ir_node *cond = new_d_Cond(dbgi, condition);
2667 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
2668 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
2670 /* set branch prediction info based on __builtin_expect */
2671 if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
2672 long cnst = fold_constant(expression->binary.right);
2673 cond_jmp_predicate pred;
2676 pred = COND_JMP_PRED_FALSE;
2678 pred = COND_JMP_PRED_TRUE;
2680 set_Cond_jmp_pred(cond, pred);
2683 add_immBlock_pred(true_block, true_proj);
2684 add_immBlock_pred(false_block, false_proj);
2686 set_cur_block(NULL);
2691 static void create_declaration_entity(declaration_t *declaration,
2692 declaration_kind_t declaration_kind,
2693 ir_type *parent_type)
2695 ident *const id = new_id_from_str(declaration->symbol->string);
2696 ir_type *const irtype = get_ir_type(declaration->type);
2697 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
2698 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
2699 set_entity_ld_ident(entity, id);
2701 declaration->declaration_kind = (unsigned char) declaration_kind;
2702 declaration->v.entity = entity;
2703 set_entity_variability(entity, variability_uninitialized);
2704 if(parent_type == get_tls_type())
2705 set_entity_allocation(entity, allocation_automatic);
2706 else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
2707 set_entity_allocation(entity, allocation_static);
2708 /* TODO: visibility? */
2711 typedef struct compound_graph_path_entry_t compound_graph_path_entry_t;
2713 enum compound_graph_entry_type_t {
2714 COMPOUND_GRAPH_ENTRY_ARRAY,
2715 COMPOUND_GRAPH_ENTRY_COMPOUND
2718 struct compound_graph_path_entry_t {
2724 compound_graph_path_entry_t *prev;
2727 static void create_initializer_object(initializer_t *initializer, type_t *type,
2728 ir_entity *entity, compound_graph_path_entry_t *entry, int len);
2730 static compound_graph_path *create_compound_path(ir_type *type,
2731 compound_graph_path_entry_t *entry, int len)
2733 compound_graph_path *path = new_compound_graph_path(type, len);
2736 for( ; entry != NULL; entry = entry->prev, --i) {
2738 if(entry->type == COMPOUND_GRAPH_ENTRY_COMPOUND) {
2739 set_compound_graph_path_node(path, i, entry->v.entity);
2741 assert(entry->type == COMPOUND_GRAPH_ENTRY_ARRAY);
2742 set_compound_graph_path_array_index(path, i, entry->v.array_index);
2750 static void create_initializer_value(initializer_value_t *initializer,
2752 compound_graph_path_entry_t *entry,
2755 ir_node *node = expression_to_firm(initializer->value);
2756 ir_type *type = get_entity_type(entity);
2757 compound_graph_path *path = create_compound_path(type, entry, len);
2758 add_compound_ent_value_w_path(entity, node, path);
2761 static void create_initializer_compound(initializer_list_t *initializer,
2762 compound_type_t *type,
2764 compound_graph_path_entry_t *last_entry,
2767 declaration_t *compound_declaration = type->declaration;
2769 declaration_t *compound_entry = compound_declaration->scope.declarations;
2771 compound_graph_path_entry_t entry;
2772 entry.type = COMPOUND_GRAPH_ENTRY_COMPOUND;
2773 entry.prev = last_entry;
2777 for( ; compound_entry != NULL; compound_entry = compound_entry->next) {
2778 if(compound_entry->symbol == NULL)
2780 if(compound_entry->namespc != NAMESPACE_NORMAL)
2783 if(i >= initializer->len)
2786 entry.v.entity = compound_entry->v.entity;
2788 initializer_t *sub_initializer = initializer->initializers[i];
2790 assert(compound_entry != NULL);
2791 assert(compound_entry->declaration_kind
2792 == DECLARATION_KIND_COMPOUND_MEMBER);
2794 if(sub_initializer->kind == INITIALIZER_VALUE) {
2795 create_initializer_value(&sub_initializer->value,
2796 entity, &entry, len);
2798 type_t *entry_type = skip_typeref(compound_entry->type);
2799 create_initializer_object(sub_initializer, entry_type, entity,
2807 static void create_initializer_array(initializer_list_t *initializer,
2808 array_type_t *type, ir_entity *entity,
2809 compound_graph_path_entry_t *last_entry,
2812 type_t *element_type = type->element_type;
2813 element_type = skip_typeref(element_type);
2815 compound_graph_path_entry_t entry;
2816 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2817 entry.prev = last_entry;
2821 for(i = 0; i < initializer->len; ++i) {
2822 entry.v.array_index = i;
2824 initializer_t *sub_initializer = initializer->initializers[i];
2826 if(sub_initializer->kind == INITIALIZER_VALUE) {
2827 create_initializer_value(&sub_initializer->value,
2828 entity, &entry, len);
2830 create_initializer_object(sub_initializer, element_type, entity,
2836 /* TODO: initialize rest... */
2837 if(type->size_expression != NULL) {
2838 size_t array_len = fold_constant(type->size_expression);
2839 for( ; i < array_len; ++i) {
2846 static void create_initializer_string(initializer_string_t *initializer,
2847 array_type_t *type, ir_entity *entity,
2848 compound_graph_path_entry_t *last_entry,
2851 type_t *element_type = type->element_type;
2852 element_type = skip_typeref(element_type);
2854 compound_graph_path_entry_t entry;
2855 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2856 entry.prev = last_entry;
2859 ir_type *const irtype = get_entity_type(entity);
2860 size_t arr_len = get_array_type_size(type);
2861 const char *const p = initializer->string.begin;
2862 if (initializer->string.size < arr_len) {
2863 arr_len = initializer->string.size;
2865 for (size_t i = 0; i < arr_len; ++i) {
2866 entry.v.array_index = i;
2868 ir_node *node = new_Const_long(mode_Bs, p[i]);
2869 compound_graph_path *path = create_compound_path(irtype, &entry, len);
2870 add_compound_ent_value_w_path(entity, node, path);
2874 static void create_initializer_wide_string(
2875 const initializer_wide_string_t *const initializer, array_type_t *const type,
2876 ir_entity *const entity, compound_graph_path_entry_t *const last_entry,
2879 type_t *element_type = type->element_type;
2880 element_type = skip_typeref(element_type);
2882 compound_graph_path_entry_t entry;
2883 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2884 entry.prev = last_entry;
2887 ir_type *const irtype = get_entity_type(entity);
2888 const size_t arr_len = get_array_type_size(type);
2889 const wchar_rep_t * p = initializer->string.begin;
2890 const wchar_rep_t *const end = p + initializer->string.size;
2891 for (size_t i = 0; i < arr_len && p != end; ++i, ++p) {
2892 entry.v.array_index = i;
2894 ir_node *node = new_Const_long(mode_int, *p);
2895 compound_graph_path *path = create_compound_path(irtype, &entry, len);
2896 add_compound_ent_value_w_path(entity, node, path);
2900 static void create_initializer_object(initializer_t *initializer, type_t *type,
2901 ir_entity *entity, compound_graph_path_entry_t *entry, int len)
2903 if(is_type_array(type)) {
2904 array_type_t *array_type = &type->array;
2906 switch (initializer->kind) {
2907 case INITIALIZER_STRING: {
2908 initializer_string_t *const string = &initializer->string;
2909 create_initializer_string(string, array_type, entity, entry, len);
2913 case INITIALIZER_WIDE_STRING: {
2914 initializer_wide_string_t *const string = &initializer->wide_string;
2915 create_initializer_wide_string(string, array_type, entity, entry, len);
2919 case INITIALIZER_LIST: {
2920 initializer_list_t *const list = &initializer->list;
2921 create_initializer_array(list, array_type, entity, entry, len);
2925 case INITIALIZER_VALUE:
2928 panic("Unhandled initializer");
2930 assert(initializer->kind == INITIALIZER_LIST);
2931 initializer_list_t *list = &initializer->list;
2933 assert(is_type_compound(type));
2934 compound_type_t *compound_type = &type->compound;
2935 create_initializer_compound(list, compound_type, entity, entry, len);
2939 static void create_initializer_local_variable_entity(declaration_t *declaration)
2941 initializer_t *initializer = declaration->init.initializer;
2942 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
2943 ir_entity *entity = declaration->v.entity;
2944 ir_node *memory = get_store();
2945 ir_node *nomem = new_NoMem();
2946 ir_node *frame = get_irg_frame(current_ir_graph);
2947 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
2949 if(initializer->kind == INITIALIZER_VALUE) {
2950 initializer_value_t *initializer_value = &initializer->value;
2952 ir_node *value = expression_to_firm(initializer_value->value);
2953 type_t *type = skip_typeref(declaration->type);
2954 assign_value(dbgi, addr, type, value);
2958 /* create a "template" entity which is copied to the entity on the stack */
2959 ident *const id = unique_ident("initializer");
2960 ir_type *const irtype = get_ir_type(declaration->type);
2961 ir_type *const global_type = get_glob_type();
2962 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
2963 set_entity_ld_ident(init_entity, id);
2965 set_entity_variability(init_entity, variability_initialized);
2966 set_entity_visibility(init_entity, visibility_local);
2967 set_entity_allocation(init_entity, allocation_static);
2969 ir_graph *const old_current_ir_graph = current_ir_graph;
2970 current_ir_graph = get_const_code_irg();
2972 type_t *const type = skip_typeref(declaration->type);
2973 create_initializer_object(initializer, type, init_entity, NULL, 0);
2975 assert(current_ir_graph == get_const_code_irg());
2976 current_ir_graph = old_current_ir_graph;
2978 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
2979 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
2981 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
2982 set_store(copyb_mem);
2985 static void create_initializer(declaration_t *declaration)
2987 initializer_t *initializer = declaration->init.initializer;
2988 if(initializer == NULL)
2991 declaration_kind_t declaration_kind
2992 = (declaration_kind_t) declaration->declaration_kind;
2993 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
2994 create_initializer_local_variable_entity(declaration);
2998 if(initializer->kind == INITIALIZER_VALUE) {
2999 initializer_value_t *initializer_value = &initializer->value;
3001 ir_node *value = expression_to_firm(initializer_value->value);
3003 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3004 set_value(declaration->v.value_number, value);
3006 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3008 ir_entity *entity = declaration->v.entity;
3010 set_entity_variability(entity, variability_initialized);
3011 set_atomic_ent_value(entity, value);
3014 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
3015 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3017 ir_entity *entity = declaration->v.entity;
3018 set_entity_variability(entity, variability_initialized);
3020 type_t *type = skip_typeref(declaration->type);
3021 create_initializer_object(initializer, type, entity, NULL, 0);
3026 * Creates a Firm local variable from a declaration.
3028 static void create_local_variable(declaration_t *declaration)
3030 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3032 bool needs_entity = declaration->address_taken;
3033 type_t *type = skip_typeref(declaration->type);
3035 if(is_type_array(type) || is_type_compound(type)) {
3036 needs_entity = true;
3040 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3041 create_declaration_entity(declaration,
3042 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3045 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3046 declaration->v.value_number = next_value_number_function;
3047 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3048 ++next_value_number_function;
3051 create_initializer(declaration);
3054 static void create_local_static_variable(declaration_t *declaration)
3056 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3058 type_t *const type = skip_typeref(declaration->type);
3059 ir_type *const global_type = get_glob_type();
3060 ident *const id = unique_ident(declaration->symbol->string);
3061 ir_type *const irtype = get_ir_type(type);
3062 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3063 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
3064 set_entity_ld_ident(entity, id);
3066 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3067 declaration->v.entity = entity;
3068 set_entity_variability(entity, variability_uninitialized);
3069 set_entity_visibility(entity, visibility_local);
3070 set_entity_allocation(entity, allocation_static);
3072 ir_graph *const old_current_ir_graph = current_ir_graph;
3073 current_ir_graph = get_const_code_irg();
3075 create_initializer(declaration);
3077 assert(current_ir_graph == get_const_code_irg());
3078 current_ir_graph = old_current_ir_graph;
3083 static void return_statement_to_firm(return_statement_t *statement)
3085 if(get_cur_block() == NULL)
3088 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3089 ir_type *func_irtype = get_ir_type(current_function_decl->type);
3094 if(get_method_n_ress(func_irtype) > 0) {
3095 ir_type *res_type = get_method_res_type(func_irtype, 0);
3097 if(statement->value != NULL) {
3098 ir_node *node = expression_to_firm(statement->value);
3099 node = do_strict_conv(dbgi, node);
3103 if(is_compound_type(res_type)) {
3106 mode = get_type_mode(res_type);
3108 in[0] = new_Unknown(mode);
3112 /* build return_value for its side effects */
3113 if(statement->value != NULL) {
3114 expression_to_firm(statement->value);
3119 ir_node *store = get_store();
3120 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
3122 ir_node *end_block = get_irg_end_block(current_ir_graph);
3123 add_immBlock_pred(end_block, ret);
3125 set_cur_block(NULL);
3128 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3130 if(get_cur_block() == NULL)
3133 return expression_to_firm(statement->expression);
3136 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3138 ir_node *result = NULL;
3139 statement_t *statement = compound->statements;
3140 for( ; statement != NULL; statement = statement->base.next) {
3141 //context2firm(&statement->scope);
3143 if(statement->base.next == NULL
3144 && statement->kind == STATEMENT_EXPRESSION) {
3145 result = expression_statement_to_firm(
3146 &statement->expression);
3149 statement_to_firm(statement);
3155 static void create_local_declaration(declaration_t *declaration)
3157 if(declaration->symbol == NULL)
3160 type_t *type = skip_typeref(declaration->type);
3162 switch ((storage_class_tag_t) declaration->storage_class) {
3163 case STORAGE_CLASS_STATIC:
3164 create_local_static_variable(declaration);
3166 case STORAGE_CLASS_ENUM_ENTRY:
3167 panic("enum entry declaration in local block found");
3168 case STORAGE_CLASS_EXTERN:
3169 panic("extern declaration in local block found");
3170 case STORAGE_CLASS_NONE:
3171 case STORAGE_CLASS_AUTO:
3172 case STORAGE_CLASS_REGISTER:
3173 if(is_type_function(type)) {
3174 panic("nested functions not supported yet");
3176 create_local_variable(declaration);
3179 case STORAGE_CLASS_TYPEDEF:
3180 case STORAGE_CLASS_THREAD:
3181 case STORAGE_CLASS_THREAD_EXTERN:
3182 case STORAGE_CLASS_THREAD_STATIC:
3185 panic("invalid storage class found");
3188 static void declaration_statement_to_firm(declaration_statement_t *statement)
3190 declaration_t *declaration = statement->declarations_begin;
3191 declaration_t *end = statement->declarations_end->next;
3192 for( ; declaration != end; declaration = declaration->next) {
3193 if(declaration->namespc != NAMESPACE_NORMAL)
3195 create_local_declaration(declaration);
3199 static void if_statement_to_firm(if_statement_t *statement)
3201 ir_node *cur_block = get_cur_block();
3203 ir_node *fallthrough_block = new_immBlock();
3205 /* the true (blocks) */
3206 ir_node *true_block;
3207 if (statement->true_statement != NULL) {
3208 true_block = new_immBlock();
3209 statement_to_firm(statement->true_statement);
3210 if(get_cur_block() != NULL) {
3211 ir_node *jmp = new_Jmp();
3212 add_immBlock_pred(fallthrough_block, jmp);
3215 true_block = fallthrough_block;
3218 /* the false (blocks) */
3219 ir_node *false_block;
3220 if(statement->false_statement != NULL) {
3221 false_block = new_immBlock();
3223 statement_to_firm(statement->false_statement);
3224 if(get_cur_block() != NULL) {
3225 ir_node *jmp = new_Jmp();
3226 add_immBlock_pred(fallthrough_block, jmp);
3229 false_block = fallthrough_block;
3232 /* create the condition */
3233 if(cur_block != NULL) {
3234 set_cur_block(cur_block);
3235 create_condition_evaluation(statement->condition, true_block,
3239 mature_immBlock(true_block);
3240 if(false_block != fallthrough_block) {
3241 mature_immBlock(false_block);
3243 mature_immBlock(fallthrough_block);
3245 set_cur_block(fallthrough_block);
3248 static void while_statement_to_firm(while_statement_t *statement)
3250 ir_node *jmp = NULL;
3251 if(get_cur_block() != NULL) {
3255 /* create the header block */
3256 ir_node *header_block = new_immBlock();
3258 add_immBlock_pred(header_block, jmp);
3261 /* the false block */
3262 ir_node *false_block = new_immBlock();
3265 ir_node *body_block;
3266 if (statement->body != NULL) {
3267 ir_node *old_continue_label = continue_label;
3268 ir_node *old_break_label = break_label;
3269 continue_label = header_block;
3270 break_label = false_block;
3272 body_block = new_immBlock();
3273 statement_to_firm(statement->body);
3275 assert(continue_label == header_block);
3276 assert(break_label == false_block);
3277 continue_label = old_continue_label;
3278 break_label = old_break_label;
3280 if(get_cur_block() != NULL) {
3282 add_immBlock_pred(header_block, jmp);
3285 body_block = header_block;
3288 /* create the condition */
3289 set_cur_block(header_block);
3291 create_condition_evaluation(statement->condition, body_block, false_block);
3292 mature_immBlock(body_block);
3293 mature_immBlock(false_block);
3294 mature_immBlock(header_block);
3296 set_cur_block(false_block);
3299 static void do_while_statement_to_firm(do_while_statement_t *statement)
3301 ir_node *jmp = NULL;
3302 if(get_cur_block() != NULL) {
3306 /* create the header block */
3307 ir_node *header_block = new_immBlock();
3309 /* the false block */
3310 ir_node *false_block = new_immBlock();
3313 ir_node *body_block = new_immBlock();
3315 add_immBlock_pred(body_block, jmp);
3318 if (statement->body != NULL) {
3319 ir_node *old_continue_label = continue_label;
3320 ir_node *old_break_label = break_label;
3321 continue_label = header_block;
3322 break_label = false_block;
3324 statement_to_firm(statement->body);
3326 assert(continue_label == header_block);
3327 assert(break_label == false_block);
3328 continue_label = old_continue_label;
3329 break_label = old_break_label;
3331 if (get_cur_block() == NULL) {
3332 mature_immBlock(header_block);
3333 mature_immBlock(body_block);
3334 mature_immBlock(false_block);
3339 ir_node *body_jmp = new_Jmp();
3340 add_immBlock_pred(header_block, body_jmp);
3341 mature_immBlock(header_block);
3343 /* create the condition */
3344 set_cur_block(header_block);
3346 create_condition_evaluation(statement->condition, body_block, false_block);
3347 mature_immBlock(body_block);
3348 mature_immBlock(false_block);
3349 mature_immBlock(header_block);
3351 set_cur_block(false_block);
3354 static void for_statement_to_firm(for_statement_t *statement)
3356 ir_node *jmp = NULL;
3357 if (get_cur_block() != NULL) {
3358 if(statement->initialisation != NULL) {
3359 expression_to_firm(statement->initialisation);
3362 /* create declarations */
3363 declaration_t *declaration = statement->scope.declarations;
3364 for( ; declaration != NULL; declaration = declaration->next) {
3365 create_local_declaration(declaration);
3372 /* create the step block */
3373 ir_node *const step_block = new_immBlock();
3374 if (statement->step != NULL) {
3375 expression_to_firm(statement->step);
3377 ir_node *const step_jmp = new_Jmp();
3379 /* create the header block */
3380 ir_node *const header_block = new_immBlock();
3382 add_immBlock_pred(header_block, jmp);
3384 add_immBlock_pred(header_block, step_jmp);
3386 /* the false block */
3387 ir_node *const false_block = new_immBlock();
3390 ir_node * body_block;
3391 if (statement->body != NULL) {
3392 ir_node *const old_continue_label = continue_label;
3393 ir_node *const old_break_label = break_label;
3394 continue_label = step_block;
3395 break_label = false_block;
3397 body_block = new_immBlock();
3398 statement_to_firm(statement->body);
3400 assert(continue_label == step_block);
3401 assert(break_label == false_block);
3402 continue_label = old_continue_label;
3403 break_label = old_break_label;
3405 if (get_cur_block() != NULL) {
3407 add_immBlock_pred(step_block, jmp);
3410 body_block = step_block;
3413 /* create the condition */
3414 set_cur_block(header_block);
3415 if (statement->condition != NULL) {
3416 create_condition_evaluation(statement->condition, body_block,
3419 keep_alive(header_block);
3421 add_immBlock_pred(body_block, jmp);
3424 mature_immBlock(body_block);
3425 mature_immBlock(false_block);
3426 mature_immBlock(step_block);
3427 mature_immBlock(header_block);
3428 mature_immBlock(false_block);
3430 set_cur_block(false_block);
3433 static void create_jump_statement(const statement_t *statement,
3434 ir_node *target_block)
3436 if(get_cur_block() == NULL)
3439 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3440 ir_node *jump = new_d_Jmp(dbgi);
3441 add_immBlock_pred(target_block, jump);
3443 set_cur_block(NULL);
3446 static void switch_statement_to_firm(const switch_statement_t *statement)
3448 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3450 ir_node *expression = expression_to_firm(statement->expression);
3451 ir_node *cond = new_d_Cond(dbgi, expression);
3452 ir_node *break_block = new_immBlock();
3454 set_cur_block(NULL);
3456 ir_node *const old_switch_cond = current_switch_cond;
3457 ir_node *const old_break_label = break_label;
3458 const bool old_saw_default_label = saw_default_label;
3459 current_switch_cond = cond;
3460 break_label = break_block;
3462 if (statement->body != NULL) {
3463 statement_to_firm(statement->body);
3466 if(get_cur_block() != NULL) {
3467 ir_node *jmp = new_Jmp();
3468 add_immBlock_pred(break_block, jmp);
3471 if (!saw_default_label) {
3472 set_cur_block(get_nodes_block(cond));
3473 ir_node *const proj = new_d_defaultProj(dbgi, cond,
3474 MAGIC_DEFAULT_PN_NUMBER);
3475 add_immBlock_pred(break_block, proj);
3478 assert(current_switch_cond == cond);
3479 assert(break_label == break_block);
3480 current_switch_cond = old_switch_cond;
3481 break_label = old_break_label;
3482 saw_default_label = old_saw_default_label;
3484 mature_immBlock(break_block);
3485 set_cur_block(break_block);
3488 static void case_label_to_firm(const case_label_statement_t *statement)
3490 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3492 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
3494 /* let's create a node and hope firm constant folding creates a Const
3497 ir_node *old_block = get_nodes_block(current_switch_cond);
3498 ir_node *block = new_immBlock();
3500 set_cur_block(old_block);
3501 if(statement->expression != NULL) {
3502 long start_pn = fold_constant(statement->expression);
3503 long end_pn = start_pn;
3504 if (statement->end_range != NULL) {
3505 end_pn = fold_constant(statement->end_range);
3507 assert(start_pn <= end_pn);
3508 /* create jumps for all cases in the given range */
3509 for (long pn = start_pn; pn <= end_pn; ++pn) {
3510 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
3511 /* oops someone detected our cheating... */
3512 panic("magic default pn used");
3514 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
3515 add_immBlock_pred(block, proj);
3518 saw_default_label = true;
3519 proj = new_d_defaultProj(dbgi, current_switch_cond,
3520 MAGIC_DEFAULT_PN_NUMBER);
3522 add_immBlock_pred(block, proj);
3525 if (fallthrough != NULL) {
3526 add_immBlock_pred(block, fallthrough);
3528 mature_immBlock(block);
3529 set_cur_block(block);
3531 if(statement->statement != NULL) {
3532 statement_to_firm(statement->statement);
3536 static ir_node *get_label_block(declaration_t *label)
3538 assert(label->namespc == NAMESPACE_LABEL);
3540 if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
3541 return label->v.block;
3543 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
3545 ir_node *old_cur_block = get_cur_block();
3546 ir_node *block = new_immBlock();
3547 set_cur_block(old_cur_block);
3549 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
3550 label->v.block = block;
3552 ARR_APP1(ir_node *, imature_blocks, block);
3557 static void label_to_firm(const label_statement_t *statement)
3559 ir_node *block = get_label_block(statement->label);
3561 if(get_cur_block() != NULL) {
3562 ir_node *jmp = new_Jmp();
3563 add_immBlock_pred(block, jmp);
3566 set_cur_block(block);
3569 if(statement->statement != NULL) {
3570 statement_to_firm(statement->statement);
3574 static void goto_to_firm(const goto_statement_t *statement)
3576 if(get_cur_block() == NULL)
3579 ir_node *block = get_label_block(statement->label);
3580 ir_node *jmp = new_Jmp();
3581 add_immBlock_pred(block, jmp);
3583 set_cur_block(NULL);
3586 typedef enum modifier_t {
3587 ASM_MODIFIER_WRITE_ONLY = 1 << 0,
3588 ASM_MODIFIER_READ_WRITE = 1 << 1,
3589 ASM_MODIFIER_COMMUTATIVE = 1 << 2,
3590 ASM_MODIFIER_EARLYCLOBBER = 1 << 3,
3593 static void asm_statement_to_firm(const asm_statement_t *statement)
3596 fprintf(stderr, "WARNING asm not implemented yet!\n");
3598 bool needs_memory = false;
3600 size_t n_clobbers = 0;
3601 asm_clobber_t *clobber = statement->clobbers;
3602 for( ; clobber != NULL; clobber = clobber->next) {
3603 if(strcmp(clobber->clobber, "memory") == 0) {
3604 needs_memory = true;
3608 ident *id = new_id_from_str(clobber->clobber);
3609 obstack_ptr_grow(&asm_obst, id);
3612 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
3613 ident **clobbers = NULL;
3614 if(n_clobbers > 0) {
3615 clobbers = obstack_finish(&asm_obst);
3618 /* find and count input and output constraints */
3619 asm_constraint_t *constraint = statement->inputs;
3620 for( ; constraint != NULL; constraint = constraint->next) {
3622 bool supports_memop = false;
3623 for(const char *c = constraint->constraints; *c != 0; ++c) {
3624 /* TODO: improve error messages */
3628 panic("multiple alternative assembler constraints not "
3636 supports_memop = true;
3637 obstack_1grow(&asm_obst, *c);
3640 if(modifiers & ASM_MODIFIER_READ_WRITE)
3641 panic("inconsistent register constraints");
3642 modifiers |= ASM_MODIFIER_WRITE_ONLY;
3645 if(modifiers & ASM_MODIFIER_WRITE_ONLY)
3646 panic("inconsistent register constraints");
3647 modifiers |= ASM_MODIFIER_READ_WRITE;
3650 modifiers |= ASM_MODIFIER_EARLYCLOBBER;
3651 panic("early clobber assembler constraint not supported yet");
3654 modifiers |= ASM_MODIFIER_COMMUTATIVE;
3655 panic("commutative assembler constraint not supported yet");
3658 /* skip register preferences stuff... */
3659 while(*c != 0 && *c != ',')
3663 /* skip register preferences stuff... */
3667 obstack_1grow(&asm_obst, *c);
3671 obstack_1grow(&asm_obst, '\0');
3672 const char *constraint_string = obstack_finish(&asm_obst);
3674 needs_memory |= supports_memop;
3675 if(supports_memop) {
3682 static void statement_to_firm(statement_t *statement)
3684 switch(statement->kind) {
3685 case STATEMENT_INVALID:
3686 panic("invalid statement found");
3687 case STATEMENT_COMPOUND:
3688 compound_statement_to_firm(&statement->compound);
3690 case STATEMENT_RETURN:
3691 return_statement_to_firm(&statement->returns);
3693 case STATEMENT_EXPRESSION:
3694 expression_statement_to_firm(&statement->expression);
3697 if_statement_to_firm(&statement->ifs);
3699 case STATEMENT_WHILE:
3700 while_statement_to_firm(&statement->whiles);
3702 case STATEMENT_DO_WHILE:
3703 do_while_statement_to_firm(&statement->do_while);
3705 case STATEMENT_DECLARATION:
3706 declaration_statement_to_firm(&statement->declaration);
3708 case STATEMENT_BREAK:
3709 create_jump_statement(statement, break_label);
3711 case STATEMENT_CONTINUE:
3712 create_jump_statement(statement, continue_label);
3714 case STATEMENT_SWITCH:
3715 switch_statement_to_firm(&statement->switchs);
3717 case STATEMENT_CASE_LABEL:
3718 case_label_to_firm(&statement->case_label);
3721 for_statement_to_firm(&statement->fors);
3723 case STATEMENT_LABEL:
3724 label_to_firm(&statement->label);
3726 case STATEMENT_GOTO:
3727 goto_to_firm(&statement->gotos);
3730 asm_statement_to_firm(&statement->asms);
3733 panic("Statement not implemented\n");
3736 static int count_decls_in_expression(const expression_t *expression);
3738 static int count_local_declarations(const declaration_t * decl,
3739 const declaration_t *const end)
3742 for (; decl != end; decl = decl->next) {
3743 if(decl->namespc != NAMESPACE_NORMAL)
3745 const type_t *type = skip_typeref(decl->type);
3746 if (!decl->address_taken && is_type_scalar(type))
3748 const initializer_t *initializer = decl->init.initializer;
3749 /* FIXME: should walk initializer hierarchies... */
3750 if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
3751 count += count_decls_in_expression(initializer->value.value);
3757 static int count_decls_in_expression(const expression_t *expression) {
3758 if(expression == NULL)
3761 switch(expression->base.kind) {
3762 case EXPR_STATEMENT:
3763 return count_decls_in_stmts(expression->statement.statement);
3765 int count_left = count_decls_in_expression(expression->binary.left);
3766 int count_right = count_decls_in_expression(expression->binary.right);
3767 return count_left + count_right;
3770 return count_decls_in_expression(expression->unary.value);
3776 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
3777 * (or implement all the missing expressions here/implement a walker)
3783 static int count_decls_in_stmts(const statement_t *stmt)
3786 for (; stmt != NULL; stmt = stmt->base.next) {
3787 switch (stmt->kind) {
3788 case STATEMENT_DECLARATION: {
3789 const declaration_statement_t *const decl_stmt = &stmt->declaration;
3790 count += count_local_declarations(decl_stmt->declarations_begin,
3791 decl_stmt->declarations_end->next);
3795 case STATEMENT_COMPOUND: {
3796 const compound_statement_t *const comp =
3798 count += count_decls_in_stmts(comp->statements);
3802 case STATEMENT_IF: {
3803 const if_statement_t *const if_stmt = &stmt->ifs;
3804 count += count_decls_in_expression(if_stmt->condition);
3805 count += count_decls_in_stmts(if_stmt->true_statement);
3806 count += count_decls_in_stmts(if_stmt->false_statement);
3810 case STATEMENT_SWITCH: {
3811 const switch_statement_t *const switch_stmt = &stmt->switchs;
3812 count += count_decls_in_expression(switch_stmt->expression);
3813 count += count_decls_in_stmts(switch_stmt->body);
3817 case STATEMENT_LABEL: {
3818 const label_statement_t *const label_stmt = &stmt->label;
3819 if(label_stmt->statement != NULL) {
3820 count += count_decls_in_stmts(label_stmt->statement);
3825 case STATEMENT_WHILE: {
3826 const while_statement_t *const while_stmt = &stmt->whiles;
3827 count += count_decls_in_expression(while_stmt->condition);
3828 count += count_decls_in_stmts(while_stmt->body);
3832 case STATEMENT_DO_WHILE: {
3833 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
3834 count += count_decls_in_expression(do_while_stmt->condition);
3835 count += count_decls_in_stmts(do_while_stmt->body);
3839 case STATEMENT_FOR: {
3840 const for_statement_t *const for_stmt = &stmt->fors;
3841 count += count_local_declarations(for_stmt->scope.declarations, NULL);
3842 count += count_decls_in_expression(for_stmt->initialisation);
3843 count += count_decls_in_expression(for_stmt->condition);
3844 count += count_decls_in_expression(for_stmt->step);
3845 count += count_decls_in_stmts(for_stmt->body);
3849 case STATEMENT_CASE_LABEL: {
3850 const case_label_statement_t *label = &stmt->case_label;
3851 count += count_decls_in_expression(label->expression);
3852 if(label->statement != NULL) {
3853 count += count_decls_in_stmts(label->statement);
3859 case STATEMENT_BREAK:
3860 case STATEMENT_CONTINUE:
3863 case STATEMENT_EXPRESSION: {
3864 const expression_statement_t *expr_stmt = &stmt->expression;
3865 count += count_decls_in_expression(expr_stmt->expression);
3869 case STATEMENT_GOTO:
3870 case STATEMENT_INVALID:
3873 case STATEMENT_RETURN: {
3874 const return_statement_t *ret_stmt = &stmt->returns;
3875 count += count_decls_in_expression(ret_stmt->value);
3883 static int get_function_n_local_vars(declaration_t *declaration)
3887 /* count parameters */
3888 count += count_local_declarations(declaration->scope.declarations, NULL);
3890 /* count local variables declared in body */
3891 count += count_decls_in_stmts(declaration->init.statement);
3896 static void initialize_function_parameters(declaration_t *declaration)
3898 ir_graph *irg = current_ir_graph;
3899 ir_node *args = get_irg_args(irg);
3900 ir_node *start_block = get_irg_start_block(irg);
3901 ir_type *function_irtype = get_ir_type(declaration->type);
3904 declaration_t *parameter = declaration->scope.declarations;
3905 for( ; parameter != NULL; parameter = parameter->next, ++n) {
3906 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
3907 type_t *type = skip_typeref(parameter->type);
3909 bool needs_entity = parameter->address_taken;
3910 assert(!is_type_array(type));
3911 if(is_type_compound(type)) {
3912 needs_entity = true;
3916 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
3917 ident *id = new_id_from_str(parameter->symbol->string);
3918 set_entity_ident(entity, id);
3920 parameter->declaration_kind
3921 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
3922 parameter->v.entity = entity;
3926 ir_mode *mode = get_ir_mode(parameter->type);
3928 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
3930 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3931 parameter->v.value_number = next_value_number_function;
3932 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
3933 ++next_value_number_function;
3935 set_value(parameter->v.value_number, proj);
3940 * Handle additional decl modifiers for IR-graphs
3942 * @param irg the IR-graph
3943 * @param dec_modifiers additional modifiers
3945 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
3947 if (decl_modifiers & DM_NORETURN) {
3948 /* TRUE if the declaration includes the Microsoft
3949 __declspec(noreturn) specifier. */
3950 set_irg_additional_property(irg, mtp_property_noreturn);
3952 if (decl_modifiers & DM_NOTHROW) {
3953 /* TRUE if the declaration includes the Microsoft
3954 __declspec(nothrow) specifier. */
3955 set_irg_additional_property(irg, mtp_property_nothrow);
3957 if (decl_modifiers & DM_NAKED) {
3958 /* TRUE if the declaration includes the Microsoft
3959 __declspec(naked) specifier. */
3960 set_irg_additional_property(irg, mtp_property_naked);
3962 if (decl_modifiers & DM_FORCEINLINE) {
3963 /* TRUE if the declaration includes the
3964 Microsoft __forceinline specifier. */
3965 set_irg_inline_property(irg, irg_inline_forced);
3967 if (decl_modifiers & DM_NOINLINE) {
3968 /* TRUE if the declaration includes the Microsoft
3969 __declspec(noinline) specifier. */
3970 set_irg_inline_property(irg, irg_inline_forbidden);
3974 static void create_function(declaration_t *declaration)
3976 ir_entity *function_entity = get_function_entity(declaration);
3978 if(declaration->init.statement == NULL)
3981 current_function_decl = declaration;
3982 current_function_name = NULL;
3984 assert(imature_blocks == NULL);
3985 imature_blocks = NEW_ARR_F(ir_node*, 0);
3987 int n_local_vars = get_function_n_local_vars(declaration);
3988 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
3989 ir_node *first_block = get_cur_block();
3991 /* set inline flags */
3992 if (declaration->is_inline)
3993 set_irg_inline_property(irg, irg_inline_recomended);
3994 handle_decl_modifier_irg(irg, declaration->modifiers);
3996 next_value_number_function = 0;
3997 initialize_function_parameters(declaration);
3999 statement_to_firm(declaration->init.statement);
4001 ir_node *end_block = get_irg_end_block(irg);
4003 /* do we have a return statement yet? */
4004 if(get_cur_block() != NULL) {
4005 type_t *type = skip_typeref(declaration->type);
4006 assert(is_type_function(type));
4007 const function_type_t *func_type = &type->function;
4008 const type_t *return_type
4009 = skip_typeref(func_type->return_type);
4012 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
4013 ret = new_Return(get_store(), 0, NULL);
4016 if(is_type_scalar(return_type)) {
4017 mode = get_ir_mode(func_type->return_type);
4023 /* ยง5.1.2.2.3 main implicitly returns 0 */
4024 if (strcmp(declaration->symbol->string, "main") == 0) {
4025 in[0] = new_Const(mode, get_mode_null(mode));
4027 in[0] = new_Unknown(mode);
4029 ret = new_Return(get_store(), 1, in);
4031 add_immBlock_pred(end_block, ret);
4034 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
4035 mature_immBlock(imature_blocks[i]);
4037 DEL_ARR_F(imature_blocks);
4038 imature_blocks = NULL;
4040 mature_immBlock(first_block);
4041 mature_immBlock(end_block);
4043 irg_finalize_cons(irg);
4045 /* finalize the frame type */
4046 ir_type *frame_type = get_irg_frame_type(irg);
4047 int n = get_compound_n_members(frame_type);
4050 for(int i = 0; i < n; ++i) {
4051 ir_entity *entity = get_compound_member(frame_type, i);
4052 ir_type *entity_type = get_entity_type(entity);
4054 int align = get_type_alignment_bytes(entity_type);
4055 if(align > align_all)
4059 misalign = offset % align;
4061 offset += align - misalign;
4065 set_entity_offset(entity, offset);
4066 offset += get_type_size_bytes(entity_type);
4068 set_type_size_bytes(frame_type, offset);
4069 set_type_alignment_bytes(frame_type, align_all);
4070 set_type_state(frame_type, layout_fixed);
4075 static void create_global_variable(declaration_t *declaration)
4079 switch ((storage_class_tag_t)declaration->storage_class) {
4080 case STORAGE_CLASS_STATIC:
4081 vis = visibility_local;
4084 case STORAGE_CLASS_EXTERN:
4085 vis = visibility_external_allocated;
4088 case STORAGE_CLASS_NONE:
4089 vis = visibility_external_visible;
4092 case STORAGE_CLASS_THREAD:
4093 vis = visibility_external_visible;
4096 case STORAGE_CLASS_THREAD_EXTERN:
4097 vis = visibility_external_allocated;
4100 case STORAGE_CLASS_THREAD_STATIC:
4101 vis = visibility_local;
4105 var_type = get_tls_type();
4109 var_type = get_glob_type();
4113 create_declaration_entity(declaration,
4114 DECLARATION_KIND_GLOBAL_VARIABLE,
4116 set_entity_visibility(declaration->v.entity, vis);
4118 current_ir_graph = get_const_code_irg();
4119 create_initializer(declaration);
4122 case STORAGE_CLASS_TYPEDEF:
4123 case STORAGE_CLASS_AUTO:
4124 case STORAGE_CLASS_REGISTER:
4125 case STORAGE_CLASS_ENUM_ENTRY:
4128 panic("Invalid storage class for global variable");
4131 static void scope_to_firm(scope_t *scope)
4133 /* first pass: create declarations */
4134 declaration_t *declaration = scope->declarations;
4135 for( ; declaration != NULL; declaration = declaration->next) {
4136 if(declaration->namespc != NAMESPACE_NORMAL)
4138 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4139 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4141 if(declaration->symbol == NULL)
4144 type_t *type = skip_typeref(declaration->type);
4145 if(is_type_function(type)) {
4146 get_function_entity(declaration);
4148 create_global_variable(declaration);
4152 /* second pass: create code */
4153 declaration = scope->declarations;
4154 for( ; declaration != NULL; declaration = declaration->next) {
4155 if(declaration->namespc != NAMESPACE_NORMAL)
4157 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4158 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4160 if(declaration->symbol == NULL)
4163 type_t *type = declaration->type;
4164 if(type->kind != TYPE_FUNCTION)
4167 create_function(declaration);
4171 void init_ast2firm(void)
4173 obstack_init(&asm_obst);
4174 init_atomic_modes();
4176 /* create idents for all known runtime functions */
4177 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
4178 predef_idents[rts_data[i].id] = new_id_from_str(rts_data[i].name);
4182 void exit_ast2firm(void)
4184 obstack_free(&asm_obst, NULL);
4187 void translation_unit_to_firm(translation_unit_t *unit)
4189 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
4190 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
4191 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
4193 ir_type_int = get_ir_type(type_int);
4194 ir_type_const_char = get_ir_type(type_const_char);
4195 ir_type_wchar_t = get_ir_type(type_wchar_t);
4196 ir_type_void = get_ir_type(type_int); /* we don't have a real void
4199 type_void->base.firm_type = ir_type_void;
4201 /* just to be sure */
4202 continue_label = NULL;
4204 current_switch_cond = NULL;
4206 scope_to_firm(&unit->scope);