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 ir_mode *mode = get_atomic_mode(type);
363 ident *id = get_mode_ident(mode);
364 ir_type *irtype = new_type_primitive(id, mode);
366 if(type->akind == ATOMIC_TYPE_LONG_DOUBLE
367 || type->akind == ATOMIC_TYPE_DOUBLE) {
368 set_type_alignment_bytes(irtype, 4);
374 static ir_type *create_method_type(const function_type_t *function_type)
376 type_t *return_type = function_type->return_type;
378 ident *id = unique_ident("functiontype");
379 int n_parameters = count_parameters(function_type);
380 int n_results = return_type == type_void ? 0 : 1;
381 ir_type *irtype = new_type_method(id, n_parameters, n_results);
383 if(return_type != type_void) {
384 ir_type *restype = get_ir_type(return_type);
385 set_method_res_type(irtype, 0, restype);
388 function_parameter_t *parameter = function_type->parameters;
390 for( ; parameter != NULL; parameter = parameter->next) {
391 ir_type *p_irtype = get_ir_type(parameter->type);
392 set_method_param_type(irtype, n, p_irtype);
396 if(function_type->variadic || function_type->unspecified_parameters) {
397 set_method_variadicity(irtype, variadicity_variadic);
403 static ir_type *create_pointer_type(pointer_type_t *type)
405 type_t *points_to = type->points_to;
406 ir_type *ir_points_to;
407 /* Avoid endless recursion if the points_to type contains this poiner type
408 * again (might be a struct). We therefore first create a void* pointer
409 * and then set the real points_to type
411 ir_type *ir_type = new_type_pointer(unique_ident("pointer"),
412 ir_type_void, mode_P_data);
413 type->type.firm_type = ir_type;
415 ir_points_to = get_ir_type(points_to);
416 set_pointer_points_to_type(ir_type, ir_points_to);
421 static ir_type *create_array_type(array_type_t *type)
423 type_t *element_type = type->element_type;
424 ir_type *ir_element_type = get_ir_type(element_type);
426 ident *id = unique_ident("array");
427 ir_type *ir_type = new_type_array(id, 1, ir_element_type);
429 if(type->size != NULL) {
430 int n_elements = fold_constant(type->size);
432 set_array_bounds_int(ir_type, 0, 0, n_elements);
434 size_t elemsize = get_type_size_bytes(ir_element_type);
435 int align = get_type_alignment_bytes(ir_element_type);
436 if(elemsize % align > 0) {
437 elemsize += align - (elemsize % align);
439 set_type_size_bytes(ir_type, n_elements * elemsize);
440 set_type_alignment_bytes(ir_type, align);
441 set_type_state(ir_type, layout_fixed);
443 set_array_lower_bound_int(ir_type, 0, 0);
450 * Return the signed integer type of size bits.
452 * @param size the size
454 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
457 static ir_mode *s_modes[64 + 1] = {NULL, };
461 if (size <= 0 || size > 64)
464 mode = s_modes[size];
468 snprintf(name, sizeof(name), "bf_I%u", size);
469 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
470 size <= 32 ? 32 : size );
471 s_modes[size] = mode;
475 snprintf(name, sizeof(name), "I%u", size);
476 ident *id = new_id_from_str(name);
477 res = new_type_primitive(mangle_u(get_type_ident(base_tp), id), mode);
478 set_primitive_base_type(res, base_tp);
484 * Return the unsigned integer type of size bits.
486 * @param size the size
488 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
491 static ir_mode *u_modes[64 + 1] = {NULL, };
495 if (size <= 0 || size > 64)
498 mode = u_modes[size];
502 snprintf(name, sizeof(name), "bf_U%u", size);
503 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
504 size <= 32 ? 32 : size );
505 u_modes[size] = mode;
510 snprintf(name, sizeof(name), "U%u", size);
511 ident *id = new_id_from_str(name);
512 res = new_type_primitive(mangle_u(get_type_ident(base_tp), id), mode);
513 set_primitive_base_type(res, base_tp);
518 static ir_type *create_bitfield_type(bitfield_type_t *const type)
520 type_t *base = skip_typeref(type->base);
521 assert(base->kind == TYPE_ATOMIC);
522 ir_type *irbase = get_ir_type(base);
524 unsigned size = fold_constant(type->size);
526 assert(!is_type_float(base));
527 if(is_type_signed(base)) {
528 return get_signed_int_type_for_bit_size(irbase, size);
530 return get_unsigned_int_type_for_bit_size(irbase, size);
534 #define INVALID_TYPE ((ir_type_ptr)-1)
536 static ir_type *create_struct_type(compound_type_t *type)
538 symbol_t *symbol = type->declaration->symbol;
541 id = unique_ident(symbol->string);
543 id = unique_ident("__anonymous_struct");
545 ir_type *irtype = new_type_struct(id);
547 type->type.firm_type = irtype;
549 size_t align_all = 1;
551 size_t bit_offset = 0;
552 declaration_t *entry = type->declaration->scope.declarations;
553 for( ; entry != NULL; entry = entry->next) {
554 if(entry->namespc != NAMESPACE_NORMAL)
557 type_t *entry_type = skip_typeref(entry->type);
558 ir_type *base_irtype;
559 if(entry_type->kind == TYPE_BITFIELD) {
560 base_irtype = get_ir_type(entry_type->bitfield.base);
562 base_irtype = get_ir_type(entry_type);
565 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
566 size_t misalign = offset % entry_alignment;
568 dbg_info *dbgi = get_dbg_info(&entry->source_position);
569 ir_entity *entity = NULL;
570 if(entry->symbol != NULL) {
571 ident *ident = new_id_from_str(entry->symbol->string);
572 ir_type *entry_irtype = get_ir_type(entry_type);
573 entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
575 /* only bitfields are allowed to be anonymous */
576 assert(entry_type->kind == TYPE_BITFIELD);
580 size_t bits_remainder;
581 if(entry_type->kind == TYPE_BITFIELD) {
582 size_t size_bits = fold_constant(entry_type->bitfield.size);
583 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
585 if(size_bits > rest_size_bits) {
586 /* start a new bucket */
587 offset += entry_alignment - misalign;
593 /* put into current bucket */
594 base = offset - misalign;
595 bits_remainder = misalign * 8 + bit_offset;
598 offset += size_bits / 8;
599 bit_offset = bit_offset + (size_bits % 8);
601 size_t entry_size = get_type_size_bytes(base_irtype);
602 if(misalign > 0 || bit_offset > 0)
603 offset += entry_alignment - misalign;
607 offset += entry_size;
611 if(entry_alignment > align_all) {
612 if(entry_alignment % align_all != 0) {
613 panic("uneven alignments not supported yet");
615 align_all = entry_alignment;
619 set_entity_offset(entity, base);
620 set_entity_offset_bits_remainder(entity,
621 (unsigned char) bits_remainder);
622 add_struct_member(irtype, entity);
623 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
624 entry->v.entity = entity;
628 size_t misalign = offset % align_all;
629 if(misalign > 0 || bit_offset > 0) {
630 offset += align_all - misalign;
632 set_type_alignment_bytes(irtype, align_all);
633 set_type_size_bytes(irtype, offset);
634 set_type_state(irtype, layout_fixed);
639 static ir_type *create_union_type(compound_type_t *type)
641 declaration_t *declaration = type->declaration;
642 symbol_t *symbol = declaration->symbol;
645 id = unique_ident(symbol->string);
647 id = unique_ident("__anonymous_union");
649 ir_type *irtype = new_type_union(id);
651 type->type.firm_type = irtype;
655 declaration_t *entry = declaration->scope.declarations;
656 for( ; entry != NULL; entry = entry->next) {
657 if(entry->namespc != NAMESPACE_NORMAL)
660 ident *ident = new_id_from_str(entry->symbol->string);
661 ir_type *entry_ir_type = get_ir_type(entry->type);
663 int entry_size = get_type_size_bytes(entry_ir_type);
664 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
666 dbg_info *const dbgi = get_dbg_info(&entry->source_position);
667 ir_entity *const entity = new_d_entity(irtype, ident, entry_ir_type,
669 add_union_member(irtype, entity);
670 set_entity_offset(entity, 0);
671 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
672 entry->v.entity = entity;
674 if(entry_size > size) {
677 if(entry_alignment > align_all) {
678 if(entry_alignment % align_all != 0) {
679 panic("Uneven alignments not supported yet");
681 align_all = entry_alignment;
685 set_type_alignment_bytes(irtype, align_all);
686 set_type_size_bytes(irtype, size);
687 set_type_state(irtype, layout_fixed);
692 static ir_node *expression_to_firm(const expression_t *expression);
693 static inline ir_mode *get_ir_mode(type_t *type);
695 static ir_type *create_enum_type(enum_type_t *const type)
697 type->type.firm_type = ir_type_int;
699 ir_mode *const mode = get_ir_mode((type_t*) type);
700 tarval *const one = get_mode_one(mode);
701 tarval * tv_next = get_tarval_null(mode);
703 declaration_t *declaration = type->declaration->next;
704 for (; declaration != NULL; declaration = declaration->next) {
705 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
708 declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
710 expression_t *const init = declaration->init.enum_value;
712 ir_node *const cnst = expression_to_firm(init);
713 if (!is_Const(cnst)) {
714 panic("couldn't fold constant");
716 tv_next = get_Const_tarval(cnst);
718 declaration->v.enum_val = tv_next;
719 tv_next = tarval_add(tv_next, one);
725 static ir_type *get_ir_type(type_t *type)
727 assert(type != NULL);
729 type = skip_typeref(type);
731 if(type->base.firm_type != NULL) {
732 assert(type->base.firm_type != INVALID_TYPE);
733 return type->base.firm_type;
736 ir_type *firm_type = NULL;
739 panic("error type occured");
741 firm_type = create_atomic_type(&type->atomic);
744 firm_type = create_method_type(&type->function);
747 firm_type = create_pointer_type(&type->pointer);
750 firm_type = create_array_type(&type->array);
752 case TYPE_COMPOUND_STRUCT:
753 firm_type = create_struct_type(&type->compound);
755 case TYPE_COMPOUND_UNION:
756 firm_type = create_union_type(&type->compound);
759 firm_type = create_enum_type(&type->enumt);
762 firm_type = get_ir_type(type->builtin.real_type);
765 firm_type = create_bitfield_type(&type->bitfield);
773 if(firm_type == NULL)
774 panic("unknown type found");
776 type->base.firm_type = firm_type;
780 static inline ir_mode *get_ir_mode(type_t *type)
782 ir_type *irtype = get_ir_type(type);
784 /* firm doesn't report a mode for arrays somehow... */
785 if(is_Array_type(irtype)) {
789 ir_mode *mode = get_type_mode(irtype);
790 assert(mode != NULL);
794 static ident *predef_idents[rts_max];
796 /** Names of the runtime functions. */
797 static const struct {
798 int id; /**< the rts id */
799 int n_res; /**< number of return values */
800 const char *name; /**< the name of the rts function */
801 int n_params; /**< number of parameters */
802 unsigned flags; /**< language flags */
804 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
805 { rts_abort, 0, "abort", 0, _C89 },
806 { rts_abs, 1, "abs", 1, _C89 },
807 { rts_labs, 1, "labs", 1, _C89 },
808 { rts_llabs, 1, "llabs", 1, _C99 },
809 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
811 { rts_fabs, 1, "fabs", 1, _C89 },
812 { rts_sqrt, 1, "sqrt", 1, _C89 },
813 { rts_cbrt, 1, "cbrt", 1, _C99 },
814 { rts_exp, 1, "exp", 1, _C89 },
815 { rts_exp2, 1, "exp2", 1, _C89 },
816 { rts_exp10, 1, "exp10", 1, _GNUC },
817 { rts_log, 1, "log", 1, _C89 },
818 { rts_log2, 1, "log2", 1, _C89 },
819 { rts_log10, 1, "log10", 1, _C89 },
820 { rts_pow, 1, "pow", 2, _C89 },
821 { rts_sin, 1, "sin", 1, _C89 },
822 { rts_cos, 1, "cos", 1, _C89 },
823 { rts_tan, 1, "tan", 1, _C89 },
824 { rts_asin, 1, "asin", 1, _C89 },
825 { rts_acos, 1, "acos", 1, _C89 },
826 { rts_atan, 1, "atan", 1, _C89 },
827 { rts_sinh, 1, "sinh", 1, _C89 },
828 { rts_cosh, 1, "cosh", 1, _C89 },
829 { rts_tanh, 1, "tanh", 1, _C89 },
831 { rts_fabsf, 1, "fabsf", 1, _C99 },
832 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
833 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
834 { rts_expf, 1, "expf", 1, _C99 },
835 { rts_exp2f, 1, "exp2f", 1, _C99 },
836 { rts_exp10f, 1, "exp10f", 1, _GNUC },
837 { rts_logf, 1, "logf", 1, _C99 },
838 { rts_log2f, 1, "log2f", 1, _C99 },
839 { rts_log10f, 1, "log10f", 1, _C99 },
840 { rts_powf, 1, "powf", 2, _C99 },
841 { rts_sinf, 1, "sinf", 1, _C99 },
842 { rts_cosf, 1, "cosf", 1, _C99 },
843 { rts_tanf, 1, "tanf", 1, _C99 },
844 { rts_asinf, 1, "asinf", 1, _C99 },
845 { rts_acosf, 1, "acosf", 1, _C99 },
846 { rts_atanf, 1, "atanf", 1, _C99 },
847 { rts_sinhf, 1, "sinhf", 1, _C99 },
848 { rts_coshf, 1, "coshf", 1, _C99 },
849 { rts_tanhf, 1, "tanhf", 1, _C99 },
851 { rts_fabsl, 1, "fabsl", 1, _C99 },
852 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
853 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
854 { rts_expl, 1, "expl", 1, _C99 },
855 { rts_exp2l, 1, "exp2l", 1, _C99 },
856 { rts_exp10l, 1, "exp10l", 1, _GNUC },
857 { rts_logl, 1, "logl", 1, _C99 },
858 { rts_log2l, 1, "log2l", 1, _C99 },
859 { rts_log10l, 1, "log10l", 1, _C99 },
860 { rts_powl, 1, "powl", 2, _C99 },
861 { rts_sinl, 1, "sinl", 1, _C99 },
862 { rts_cosl, 1, "cosl", 1, _C99 },
863 { rts_tanl, 1, "tanl", 1, _C99 },
864 { rts_asinl, 1, "asinl", 1, _C99 },
865 { rts_acosl, 1, "acosl", 1, _C99 },
866 { rts_atanl, 1, "atanl", 1, _C99 },
867 { rts_sinhl, 1, "sinhl", 1, _C99 },
868 { rts_coshl, 1, "coshl", 1, _C99 },
869 { rts_tanhl, 1, "tanhl", 1, _C99 },
871 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
872 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
873 { rts_strcmp, 1, "strcmp", 2, _C89 },
874 { rts_strncmp, 1, "strncmp", 3, _C89 }
877 static ir_entity* get_function_entity(declaration_t *declaration)
879 if(declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
880 return declaration->v.entity;
881 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
883 symbol_t *symbol = declaration->symbol;
884 ident *id = new_id_from_str(symbol->string);
886 ir_type *global_type = get_glob_type();
887 ir_type *ir_type_method = get_ir_type(declaration->type);
888 assert(is_Method_type(ir_type_method));
890 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
891 ir_entity *const entity = new_d_entity(global_type, id, ir_type_method, dbgi);
892 set_entity_ld_ident(entity, id);
893 if(declaration->storage_class == STORAGE_CLASS_STATIC
894 || declaration->is_inline) {
895 set_entity_visibility(entity, visibility_local);
896 } else if(declaration->init.statement != NULL) {
897 set_entity_visibility(entity, visibility_external_visible);
899 set_entity_visibility(entity, visibility_external_allocated);
901 /* We should check for file scope here, but as long as we compile C only
902 this is not needed. */
903 int n_params = get_method_n_params(ir_type_method);
904 int n_res = get_method_n_ress(ir_type_method);
907 if (n_params == 0 && n_res == 0 && id == predef_idents[rts_abort]) {
908 /* found abort(), store for later */
912 if (! firm_opt.freestanding) {
913 /* check for a known runtime function */
914 for (i = 0; i < rts_max; ++i) {
915 /* ignore those rts functions not necessary needed for current mode */
916 if ((c_mode & rts_data[i].flags) == 0)
918 if (n_params == rts_data[i].n_params && n_res == rts_data[i].n_res &&
919 id == predef_idents[rts_data[i].id])
920 rts_entities[rts_data[i].id] = entity;
925 set_entity_allocation(entity, allocation_static);
927 declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
928 declaration->v.entity = entity;
933 static ir_node *const_to_firm(const const_expression_t *cnst)
935 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
936 ir_mode *mode = get_ir_mode(cnst->base.type);
941 if(mode_is_float(mode)) {
942 tv = new_tarval_from_double(cnst->v.float_value, mode);
944 if(mode_is_signed(mode)) {
945 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
947 len = snprintf(buf, sizeof(buf), "%llu",
948 (unsigned long long) cnst->v.int_value);
950 tv = new_tarval_from_str(buf, len, mode);
953 return new_d_Const(dbgi, mode, tv);
956 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
959 assert(entity != NULL);
960 union symconst_symbol sym;
961 sym.entity_p = entity;
962 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
965 static ir_node *string_to_firm(const source_position_t *const src_pos,
966 const char *const id_prefix,
967 const string_t *const value)
969 ir_type *const global_type = get_glob_type();
970 ir_type *const type = new_type_array(unique_ident("strtype"), 1,
973 ident *const id = unique_ident(id_prefix);
974 dbg_info *const dbgi = get_dbg_info(src_pos);
975 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
976 set_entity_ld_ident(entity, id);
977 set_entity_variability(entity, variability_constant);
978 set_entity_allocation(entity, allocation_static);
980 ir_type *const elem_type = ir_type_const_char;
981 ir_mode *const mode = get_type_mode(elem_type);
983 const char* const string = value->begin;
984 const size_t slen = value->size;
986 set_array_lower_bound_int(type, 0, 0);
987 set_array_upper_bound_int(type, 0, slen);
988 set_type_size_bytes(type, slen);
989 set_type_state(type, layout_fixed);
991 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
992 for(size_t i = 0; i < slen; ++i) {
993 tvs[i] = new_tarval_from_long(string[i], mode);
996 set_array_entity_values(entity, tvs, slen);
999 return create_symconst(dbgi, mode_P_data, entity);
1002 static ir_node *string_literal_to_firm(
1003 const string_literal_expression_t* literal)
1005 return string_to_firm(&literal->base.source_position, "Lstr",
1009 static ir_node *wide_string_literal_to_firm(
1010 const wide_string_literal_expression_t* const literal)
1012 ir_type *const global_type = get_glob_type();
1013 ir_type *const elem_type = ir_type_wchar_t;
1014 ir_type *const type = new_type_array(unique_ident("strtype"), 1,
1017 ident *const id = unique_ident("Lstr");
1018 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1019 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1020 set_entity_ld_ident(entity, id);
1021 set_entity_variability(entity, variability_constant);
1022 set_entity_allocation(entity, allocation_static);
1024 ir_mode *const mode = get_type_mode(elem_type);
1026 const wchar_rep_t *const string = literal->value.begin;
1027 const size_t slen = literal->value.size;
1029 set_array_lower_bound_int(type, 0, 0);
1030 set_array_upper_bound_int(type, 0, slen);
1031 set_type_size_bytes(type, slen);
1032 set_type_state(type, layout_fixed);
1034 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1035 for(size_t i = 0; i < slen; ++i) {
1036 tvs[i] = new_tarval_from_long(string[i], mode);
1039 set_array_entity_values(entity, tvs, slen);
1042 return create_symconst(dbgi, mode_P_data, entity);
1045 static ir_node *deref_address(ir_type *const irtype, ir_node *const addr,
1046 dbg_info *const dbgi)
1048 if (is_compound_type(irtype) ||
1049 is_Method_type(irtype) ||
1050 is_Array_type(irtype)) {
1054 ir_mode *const mode = get_type_mode(irtype);
1055 ir_node *const memory = get_store();
1056 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1057 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1058 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1059 set_store(load_mem);
1063 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1065 ir_mode *mode = get_irn_mode(node);
1067 if(!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1069 if(!mode_is_float(mode))
1072 /* check if there is already a Conv */
1073 if (get_irn_op(node) == op_Conv) {
1074 /* convert it into a strict Conv */
1075 set_Conv_strict(node, 1);
1079 /* otherwise create a new one */
1080 return new_d_strictConv(dbgi, node, mode);
1083 static ir_node *get_global_var_address(dbg_info *const dbgi,
1084 const declaration_t *const decl)
1086 assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1088 ir_entity *const entity = decl->v.entity;
1089 switch ((storage_class_tag_t)decl->storage_class) {
1090 case STORAGE_CLASS_THREAD:
1091 case STORAGE_CLASS_THREAD_EXTERN:
1092 case STORAGE_CLASS_THREAD_STATIC: {
1093 ir_node *const no_mem = new_NoMem();
1094 ir_node *const tls = get_irg_tls(current_ir_graph);
1095 return new_d_simpleSel(dbgi, no_mem, tls, entity);
1099 return create_symconst(dbgi, mode_P_data, entity);
1103 /* Returns the correct base address depending on whether it is a parameter or a
1104 * normal local variable */
1105 static ir_node *get_local_frame(ir_entity *const ent)
1107 ir_graph *const irg = current_ir_graph;
1108 const ir_type *const owner = get_entity_owner(ent);
1109 if (owner == get_irg_frame_type(irg)) {
1110 return get_irg_frame(irg);
1112 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1113 return get_irg_value_param_base(irg);
1117 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1119 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1120 declaration_t *declaration = ref->declaration;
1121 type_t *type = skip_typeref(declaration->type);
1123 switch((declaration_kind_t) declaration->declaration_kind) {
1124 case DECLARATION_KIND_UNKNOWN:
1125 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) {
1131 case DECLARATION_KIND_ENUM_ENTRY: {
1132 ir_mode *const mode = get_ir_mode(type);
1133 return new_Const(mode, declaration->v.enum_val);
1136 case DECLARATION_KIND_LOCAL_VARIABLE: {
1137 ir_mode *const mode = get_ir_mode(type);
1138 return get_value(declaration->v.value_number, mode);
1140 case DECLARATION_KIND_FUNCTION: {
1141 ir_mode *const mode = get_ir_mode(type);
1142 return create_symconst(dbgi, mode, declaration->v.entity);
1144 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1145 ir_node *const addr = get_global_var_address(dbgi, declaration);
1146 ir_type *const irtype = get_entity_type(declaration->v.entity);
1147 return deref_address(irtype, addr, dbgi);
1150 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1151 ir_entity *entity = declaration->v.entity;
1152 ir_node *frame = get_local_frame(entity);
1153 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1154 ir_type *irtype = get_entity_type(entity);
1155 return deref_address(irtype, sel, dbgi);
1158 case DECLARATION_KIND_COMPOUND_MEMBER:
1159 case DECLARATION_KIND_LABEL_BLOCK:
1160 panic("not implemented reference type");
1163 panic("reference to declaration with unknown type found");
1166 static ir_node *reference_addr(const reference_expression_t *ref)
1168 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1169 declaration_t *declaration = ref->declaration;
1171 switch((declaration_kind_t) declaration->declaration_kind) {
1172 case DECLARATION_KIND_UNKNOWN:
1174 case DECLARATION_KIND_LOCAL_VARIABLE:
1175 panic("local variable without entity has no address");
1176 case DECLARATION_KIND_FUNCTION: {
1177 type_t *const type = skip_typeref(ref->base.type);
1178 ir_mode *const mode = get_ir_mode(type);
1179 return create_symconst(dbgi, mode, declaration->v.entity);
1181 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1182 ir_node *const addr = get_global_var_address(dbgi, declaration);
1185 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1186 ir_entity *entity = declaration->v.entity;
1187 ir_node *frame = get_local_frame(entity);
1188 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1193 case DECLARATION_KIND_ENUM_ENTRY:
1194 panic("trying to reference enum entry");
1196 case DECLARATION_KIND_COMPOUND_MEMBER:
1197 case DECLARATION_KIND_LABEL_BLOCK:
1198 panic("not implemented reference type");
1201 panic("reference to declaration with unknown type found");
1204 static ir_node *process_builtin_call(const call_expression_t *call)
1206 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1208 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1209 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1211 type_t *type = skip_typeref(builtin->base.type);
1212 assert(is_type_pointer(type));
1214 type_t *function_type = skip_typeref(type->pointer.points_to);
1215 symbol_t *symbol = builtin->symbol;
1217 switch(symbol->ID) {
1218 case T___builtin_alloca: {
1219 if(call->arguments == NULL || call->arguments->next != NULL) {
1220 panic("invalid number of parameters on __builtin_alloca");
1222 expression_t *argument = call->arguments->expression;
1223 ir_node *size = expression_to_firm(argument);
1225 ir_node *store = get_store();
1226 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1228 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1230 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1234 case T___builtin_nan:
1235 case T___builtin_nanf:
1236 case T___builtin_nand: {
1237 /* Ignore string for now... */
1238 assert(is_type_function(function_type));
1239 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1240 tarval *tv = get_mode_NAN(mode);
1241 ir_node *res = new_d_Const(dbgi, mode, tv);
1244 case T___builtin_va_end:
1247 panic("Unsupported builtin found\n");
1251 static ir_node *call_expression_to_firm(const call_expression_t *call)
1253 assert(get_cur_block() != NULL);
1255 expression_t *function = call->function;
1256 if(function->kind == EXPR_BUILTIN_SYMBOL) {
1257 return process_builtin_call(call);
1259 ir_node *callee = expression_to_firm(function);
1261 type_t *type = skip_typeref(function->base.type);
1262 assert(is_type_pointer(type));
1263 pointer_type_t *pointer_type = &type->pointer;
1264 type_t *points_to = skip_typeref(pointer_type->points_to);
1265 assert(is_type_function(points_to));
1266 function_type_t *function_type = &points_to->function;
1268 int n_parameters = 0;
1269 call_argument_t *argument = call->arguments;
1270 for( ; argument != NULL; argument = argument->next) {
1274 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1276 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1277 ir_type *new_method_type = NULL;
1278 if(function_type->variadic || function_type->unspecified_parameters) {
1279 /* we need to construct a new method type matching the call
1281 int n_res = get_method_n_ress(ir_method_type);
1282 new_method_type = new_type_method(unique_ident("calltype"),
1283 n_parameters, n_res);
1284 set_method_calling_convention(new_method_type,
1285 get_method_calling_convention(ir_method_type));
1286 set_method_additional_properties(new_method_type,
1287 get_method_additional_properties(ir_method_type));
1289 for(int i = 0; i < n_res; ++i) {
1290 set_method_res_type(new_method_type, i,
1291 get_method_res_type(ir_method_type, i));
1294 ir_node *in[n_parameters];
1296 argument = call->arguments;
1298 for( ; argument != NULL; argument = argument->next) {
1299 expression_t *expression = argument->expression;
1300 ir_node *arg_node = expression_to_firm(expression);
1302 arg_node = do_strict_conv(dbgi, arg_node);
1305 if(new_method_type != NULL) {
1306 ir_type *irtype = get_ir_type(expression->base.type);
1307 set_method_param_type(new_method_type, n, irtype);
1312 assert(n == n_parameters);
1314 if(new_method_type != NULL)
1315 ir_method_type = new_method_type;
1317 ir_node *store = get_store();
1318 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1320 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1323 type_t *return_type = skip_typeref(function_type->return_type);
1324 ir_node *result = NULL;
1326 if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1328 if(is_type_scalar(return_type)) {
1329 mode = get_ir_mode(return_type);
1333 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1334 result = new_d_Proj(dbgi, resproj, mode, 0);
1340 static void statement_to_firm(statement_t *statement);
1341 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1343 static ir_node *expression_to_addr(const expression_t *expression);
1344 static void create_condition_evaluation(const expression_t *expression,
1345 ir_node *true_block,
1346 ir_node *false_block);
1348 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1351 value = do_strict_conv(dbgi, value);
1353 ir_node *memory = get_store();
1355 if(is_type_scalar(type)) {
1356 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1357 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1358 set_store(store_mem);
1360 ir_type *irtype = get_ir_type(type);
1361 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1362 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1363 set_store(copyb_mem);
1367 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1369 tarval *all_one = get_mode_all_one(mode);
1370 int mode_size = get_mode_size_bits(mode);
1372 assert(offset >= 0 && size >= 0);
1373 assert(offset + size <= mode_size);
1374 if(size == mode_size) {
1378 long shiftr = get_mode_size_bits(mode) - size;
1379 long shiftl = offset;
1380 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1381 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1382 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1383 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1388 static void bitfield_store_to_firm(const unary_expression_t *expression,
1391 expression_t *select = expression->value;
1392 assert(select->kind == EXPR_SELECT);
1393 type_t *type = select->base.type;
1394 assert(type->kind == TYPE_BITFIELD);
1395 ir_mode *mode = get_ir_mode(type->bitfield.base);
1396 ir_node *addr = expression_to_addr(select);
1398 assert(get_irn_mode(value) == mode);
1400 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1402 /* kill upper bits of value and shift to right position */
1403 ir_entity *entity = select->select.compound_entry->v.entity;
1404 int bitoffset = get_entity_offset_bits_remainder(entity);
1405 ir_type *entity_type = get_entity_type(entity);
1406 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1408 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1409 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1410 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1411 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1412 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1413 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1415 /* load current value */
1416 ir_node *mem = get_store();
1417 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1418 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1419 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1420 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1421 tarval *inv_mask = tarval_not(shift_mask);
1422 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1423 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1425 /* construct new value and store */
1426 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1427 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1428 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1429 set_store(store_mem);
1432 static void set_value_for_expression(const expression_t *expression,
1435 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1436 value = do_strict_conv(dbgi, value);
1438 if(expression->kind == EXPR_REFERENCE) {
1439 const reference_expression_t *ref = &expression->reference;
1441 declaration_t *declaration = ref->declaration;
1442 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1443 if(declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1444 set_value(declaration->v.value_number, value);
1449 if(expression->kind == EXPR_UNARY_BITFIELD_EXTRACT) {
1450 bitfield_store_to_firm(&expression->unary, value);
1454 ir_node *addr = expression_to_addr(expression);
1455 type_t *type = skip_typeref(expression->base.type);
1456 assign_value(dbgi, addr, type, value);
1459 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1461 ir_mode *value_mode = get_irn_mode(value);
1463 if (value_mode == dest_mode || is_Bad(value))
1466 if(dest_mode == mode_b) {
1467 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1468 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1469 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1473 return new_d_Conv(dbgi, value, dest_mode);
1476 static ir_node *create_incdec(const unary_expression_t *expression)
1478 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1479 type_t *type = skip_typeref(expression->base.type);
1480 ir_mode *mode = get_ir_mode(type);
1481 expression_t *value = expression->value;
1483 ir_node *value_node = expression_to_firm(value);
1486 if(is_type_pointer(type)) {
1487 pointer_type_t *pointer_type = &type->pointer;
1488 unsigned elem_size = get_type_size(pointer_type->points_to);
1489 offset = new_Const_long(mode_int, elem_size);
1491 assert(is_type_arithmetic(type));
1492 offset = new_Const(mode, get_mode_one(mode));
1495 switch(expression->base.kind) {
1496 case EXPR_UNARY_POSTFIX_INCREMENT: {
1497 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1498 set_value_for_expression(value, new_value);
1501 case EXPR_UNARY_POSTFIX_DECREMENT: {
1502 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1503 set_value_for_expression(value, new_value);
1506 case EXPR_UNARY_PREFIX_INCREMENT: {
1507 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1508 set_value_for_expression(value, new_value);
1511 case EXPR_UNARY_PREFIX_DECREMENT: {
1512 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1513 set_value_for_expression(value, new_value);
1517 panic("no incdec expr in create_incdec");
1522 static bool is_local_variable(expression_t *expression)
1524 if (expression->kind != EXPR_REFERENCE)
1526 reference_expression_t *ref_expr = &expression->reference;
1527 declaration_t *declaration = ref_expr->declaration;
1528 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
1531 static pn_Cmp get_pnc(const expression_kind_t kind)
1534 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1535 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1536 case EXPR_BINARY_NOTEQUAL: return pn_Cmp_Ne;
1537 case EXPR_BINARY_ISLESS:
1538 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
1539 case EXPR_BINARY_ISLESSEQUAL:
1540 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
1541 case EXPR_BINARY_ISGREATER:
1542 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
1543 case EXPR_BINARY_ISGREATEREQUAL:
1544 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
1545 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
1550 panic("trying to get pn_Cmp from non-comparison binexpr type");
1554 * Handle the assume optimizer hint: check if a Confirm
1555 * node can be created.
1557 * @param dbi debug info
1558 * @param expr the IL assume expression
1560 * we support here only some simple cases:
1565 static ir_node *handle_assume_compare(dbg_info *dbi,
1566 const binary_expression_t *expression)
1568 expression_t *op1 = expression->left;
1569 expression_t *op2 = expression->right;
1570 declaration_t *var2, *var = NULL;
1571 ir_node *res = NULL;
1574 cmp_val = get_pnc(expression->base.kind);
1576 if (is_local_variable(op1) && is_local_variable(op2)) {
1577 var = op1->reference.declaration;
1578 var2 = op2->reference.declaration;
1580 type_t *const type = skip_typeref(var->type);
1581 ir_mode *const mode = get_ir_mode(type);
1583 ir_node *const irn1 = get_value(var->v.value_number, mode);
1584 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1586 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1587 set_value(var2->v.value_number, res);
1589 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
1590 set_value(var->v.value_number, res);
1596 if (is_local_variable(op1) && is_constant_expression(op2)) {
1597 var = op1->reference.declaration;
1599 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
1600 cmp_val = get_inversed_pnc(cmp_val);
1601 var = op2->reference.declaration;
1606 type_t *const type = skip_typeref(var->type);
1607 ir_mode *const mode = get_ir_mode(type);
1609 res = get_value(var->v.value_number, mode);
1610 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
1611 set_value(var->v.value_number, res);
1617 * Handle the assume optimizer hint.
1619 * @param dbi debug info
1620 * @param expr the IL assume expression
1622 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
1623 switch(expression->kind) {
1624 case EXPR_BINARY_EQUAL:
1625 case EXPR_BINARY_NOTEQUAL:
1626 case EXPR_BINARY_LESS:
1627 case EXPR_BINARY_LESSEQUAL:
1628 case EXPR_BINARY_GREATER:
1629 case EXPR_BINARY_GREATEREQUAL:
1630 return handle_assume_compare(dbi, &expression->binary);
1636 static ir_node *bitfield_extract_to_firm(const unary_expression_t *expression)
1638 expression_t *select = expression->value;
1639 assert(select->kind == EXPR_SELECT);
1641 type_t *type = select->base.type;
1642 assert(type->kind == TYPE_BITFIELD);
1643 ir_mode *mode = get_ir_mode(type->bitfield.base);
1644 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1645 ir_node *addr = expression_to_addr(select);
1646 ir_node *mem = get_store();
1647 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1648 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1649 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1651 load_res = create_conv(dbgi, load_res, mode_int);
1653 set_store(load_mem);
1655 /* kill upper bits */
1656 ir_entity *entity = select->select.compound_entry->v.entity;
1657 int bitoffset = get_entity_offset_bits_remainder(entity);
1658 ir_type *entity_type = get_entity_type(entity);
1659 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1660 long shift_bitsl = machine_size - bitoffset - bitsize;
1661 assert(shift_bitsl >= 0);
1662 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1663 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1664 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1666 long shift_bitsr = bitoffset + shift_bitsl;
1667 assert(shift_bitsr <= (long) machine_size);
1668 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1669 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1671 if(mode_is_signed(mode)) {
1672 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1674 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1677 return create_conv(dbgi, shiftr, mode);
1680 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
1682 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1683 type_t *type = skip_typeref(expression->base.type);
1685 if(expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
1686 return expression_to_addr(expression->value);
1688 const expression_t *value = expression->value;
1690 switch(expression->base.kind) {
1691 case EXPR_UNARY_NEGATE: {
1692 ir_node *value_node = expression_to_firm(value);
1693 ir_mode *mode = get_ir_mode(type);
1694 return new_d_Minus(dbgi, value_node, mode);
1696 case EXPR_UNARY_PLUS:
1697 return expression_to_firm(value);
1698 case EXPR_UNARY_BITWISE_NEGATE: {
1699 ir_node *value_node = expression_to_firm(value);
1700 ir_mode *mode = get_ir_mode(type);
1701 return new_d_Not(dbgi, value_node, mode);
1703 case EXPR_UNARY_NOT: {
1704 ir_node *value_node = expression_to_firm(value);
1705 ir_mode *mode = get_ir_mode(type);
1706 if(get_irn_mode(value_node) != mode_b) {
1707 value_node = create_conv(dbgi, value_node, mode_b);
1709 value_node = new_d_Not(dbgi, value_node, mode_b);
1710 if(mode != mode_b) {
1711 value_node = create_conv(dbgi, value_node, mode);
1715 case EXPR_UNARY_DEREFERENCE: {
1716 ir_node *value_node = expression_to_firm(value);
1717 type_t *value_type = skip_typeref(value->base.type);
1718 ir_type *irtype = get_ir_type(value_type);
1719 assert(is_Pointer_type(irtype));
1720 ir_type *points_to = get_pointer_points_to_type(irtype);
1721 return deref_address(points_to, value_node, dbgi);
1723 case EXPR_UNARY_POSTFIX_INCREMENT:
1724 case EXPR_UNARY_POSTFIX_DECREMENT:
1725 case EXPR_UNARY_PREFIX_INCREMENT:
1726 case EXPR_UNARY_PREFIX_DECREMENT:
1727 return create_incdec(expression);
1728 case EXPR_UNARY_CAST: {
1729 ir_node *value_node = expression_to_firm(value);
1730 ir_mode *mode = get_ir_mode(type);
1731 ir_node *node = create_conv(dbgi, value_node, mode);
1732 node = do_strict_conv(dbgi, node);
1735 case EXPR_UNARY_CAST_IMPLICIT: {
1736 ir_node *value_node = expression_to_firm(value);
1737 if(is_type_scalar(type)) {
1738 ir_mode *mode = get_ir_mode(type);
1739 return create_conv(dbgi, value_node, mode);
1744 case EXPR_UNARY_ASSUME:
1745 if(firm_opt.confirm)
1746 return handle_assume(dbgi, value);
1749 case EXPR_UNARY_BITFIELD_EXTRACT:
1750 return bitfield_extract_to_firm(expression);
1755 panic("invalid UNEXPR type found");
1758 static ir_node *create_lazy_op(const binary_expression_t *expression)
1760 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1761 type_t *type = expression->base.type;
1762 ir_mode *mode = get_ir_mode(type);
1764 if(is_constant_expression(expression->left)) {
1765 long val = fold_constant(expression->left);
1766 expression_kind_t ekind = expression->base.kind;
1767 if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
1768 || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
1769 return expression_to_firm(expression->right);
1771 assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
1772 || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
1773 return new_Const(mode, get_mode_one(mode));
1777 ir_node *cur_block = get_cur_block();
1779 ir_node *one_block = new_immBlock();
1780 ir_node *one = new_Const(mode, get_mode_one(mode));
1781 ir_node *jmp_one = new_d_Jmp(dbgi);
1783 ir_node *zero_block = new_immBlock();
1784 ir_node *zero = new_Const(mode, get_mode_null(mode));
1785 ir_node *jmp_zero = new_d_Jmp(dbgi);
1787 set_cur_block(cur_block);
1788 create_condition_evaluation((const expression_t*) expression,
1789 one_block, zero_block);
1790 mature_immBlock(one_block);
1791 mature_immBlock(zero_block);
1793 ir_node *common_block = new_immBlock();
1794 add_immBlock_pred(common_block, jmp_one);
1795 add_immBlock_pred(common_block, jmp_zero);
1796 mature_immBlock(common_block);
1798 ir_node *in[2] = { one, zero };
1799 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1804 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
1805 ir_node *right, ir_mode *mode);
1807 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
1808 create_arithmetic_func func)
1810 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1811 ir_node *left = expression_to_firm(expression->left);
1812 ir_node *right = expression_to_firm(expression->right);
1813 type_t *type = expression->right->base.type;
1814 /* be careful with the modes, because in arithmetic assign nodes only
1815 * the right operand has the mode of the arithmetic already */
1816 ir_mode *mode = get_ir_mode(type);
1817 left = create_conv(dbgi, left, mode);
1818 ir_node *res = func(dbgi, left, right, mode);
1823 static ir_node *pointer_arithmetic(ir_node *const pointer,
1826 dbg_info *const dbgi,
1827 const create_arithmetic_func func)
1829 pointer_type_t *const pointer_type = &type->pointer;
1830 type_t *const points_to = pointer_type->points_to;
1831 const unsigned elem_size = get_type_size(points_to);
1833 assert(elem_size >= 1);
1834 if (elem_size > 1) {
1835 integer = create_conv(dbgi, integer, mode_int);
1836 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
1837 ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_int);
1841 ir_mode *const mode = get_ir_mode(type);
1842 return func(dbgi, pointer, integer, mode);
1845 static ir_node *create_arithmetic_assign_binop(
1846 const binary_expression_t *expression, create_arithmetic_func func)
1848 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1849 type_t *const type = skip_typeref(expression->base.type);
1852 if (is_type_pointer(type)) {
1853 ir_node *const pointer = expression_to_firm(expression->left);
1854 ir_node * integer = expression_to_firm(expression->right);
1855 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
1857 value = create_arithmetic_binop(expression, func);
1860 ir_mode *const mode = get_ir_mode(type);
1861 value = create_conv(dbgi, value, mode);
1862 set_value_for_expression(expression->left, value);
1867 static ir_node *create_add(const binary_expression_t *expression)
1869 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1870 ir_node *left = expression_to_firm(expression->left);
1871 ir_node *right = expression_to_firm(expression->right);
1872 type_t *type = expression->base.type;
1874 expression_t *expr_left = expression->left;
1875 expression_t *expr_right = expression->right;
1876 type_t *type_left = skip_typeref(expr_left->base.type);
1877 type_t *type_right = skip_typeref(expr_right->base.type);
1879 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1880 ir_mode *const mode = get_ir_mode(type);
1881 return new_d_Add(dbgi, left, right, mode);
1884 if (is_type_pointer(type_left)) {
1885 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
1887 assert(is_type_pointer(type_right));
1888 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
1892 static ir_node *create_sub(const binary_expression_t *expression)
1894 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1895 expression_t *const expr_left = expression->left;
1896 expression_t *const expr_right = expression->right;
1897 ir_node *const left = expression_to_firm(expr_left);
1898 ir_node *const right = expression_to_firm(expr_right);
1899 type_t *const type = expression->base.type;
1900 type_t *const type_left = skip_typeref(expr_left->base.type);
1901 type_t *const type_right = skip_typeref(expr_right->base.type);
1903 if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1904 ir_mode *const mode = get_ir_mode(type);
1905 return new_d_Sub(dbgi, left, right, mode);
1906 } else if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
1907 const pointer_type_t *const ptr_type = &type_left->pointer;
1908 const unsigned elem_size = get_type_size(ptr_type->points_to);
1909 ir_mode *const mode = get_ir_mode(type);
1910 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
1911 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
1912 ir_node *const no_mem = new_NoMem();
1913 ir_node *const div = new_d_Div(dbgi, no_mem, sub, cnst, mode,
1914 op_pin_state_floats);
1915 return new_d_Proj(dbgi, div, mode, pn_Div_res);
1918 assert(is_type_pointer(type_left));
1919 return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
1922 static ir_node *create_shift(const binary_expression_t *expression)
1924 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1925 ir_node *left = expression_to_firm(expression->left);
1926 ir_node *right = expression_to_firm(expression->right);
1927 type_t *type = expression->base.type;
1928 ir_mode *mode = get_ir_mode(type);
1930 /* firm always wants the shift count to be unsigned */
1931 right = create_conv(dbgi, right, mode_uint);
1935 switch(expression->base.kind) {
1936 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
1937 case EXPR_BINARY_SHIFTLEFT:
1938 res = new_d_Shl(dbgi, left, right, mode);
1940 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
1941 case EXPR_BINARY_SHIFTRIGHT: {
1942 expression_t *expr_left = expression->left;
1943 type_t *type_left = skip_typeref(expr_left->base.type);
1945 if(is_type_signed(type_left)) {
1946 res = new_d_Shrs(dbgi, left, right, mode);
1948 res = new_d_Shr(dbgi, left, right, mode);
1953 panic("create shift op called for non-shift op");
1960 static ir_node *create_divmod(const binary_expression_t *expression)
1962 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1963 ir_node *left = expression_to_firm(expression->left);
1964 ir_node *right = expression_to_firm(expression->right);
1965 ir_node *pin = new_Pin(new_NoMem());
1966 /* be careful with the modes, because in arithmetic assign nodes only
1967 * the right operand has the mode of the arithmetic already */
1968 type_t *type = expression->right->base.type;
1969 ir_mode *mode = get_ir_mode(type);
1970 left = create_conv(dbgi, left, mode);
1974 switch (expression->base.kind) {
1975 case EXPR_BINARY_DIV:
1976 case EXPR_BINARY_DIV_ASSIGN:
1977 if(mode_is_float(mode)) {
1978 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
1979 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
1981 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
1982 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
1986 case EXPR_BINARY_MOD:
1987 case EXPR_BINARY_MOD_ASSIGN:
1988 assert(!mode_is_float(mode));
1989 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
1990 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
1993 default: panic("unexpected binary expression type in create_divmod()");
1999 static ir_node *create_arithmetic_assign_divmod(
2000 const binary_expression_t *expression)
2002 ir_node * value = create_divmod(expression);
2003 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2004 type_t *const type = expression->base.type;
2005 ir_mode *const mode = get_ir_mode(type);
2007 assert(type->kind != TYPE_POINTER);
2009 value = create_conv(dbgi, value, mode);
2010 set_value_for_expression(expression->left, value);
2015 static ir_node *create_arithmetic_assign_shift(
2016 const binary_expression_t *expression)
2018 ir_node * value = create_shift(expression);
2019 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2020 type_t *const type = expression->base.type;
2021 ir_mode *const mode = get_ir_mode(type);
2023 value = create_conv(dbgi, value, mode);
2024 set_value_for_expression(expression->left, value);
2029 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2031 expression_kind_t kind = expression->base.kind;
2034 case EXPR_BINARY_EQUAL:
2035 case EXPR_BINARY_NOTEQUAL:
2036 case EXPR_BINARY_LESS:
2037 case EXPR_BINARY_LESSEQUAL:
2038 case EXPR_BINARY_GREATER:
2039 case EXPR_BINARY_GREATEREQUAL:
2040 case EXPR_BINARY_ISGREATER:
2041 case EXPR_BINARY_ISGREATEREQUAL:
2042 case EXPR_BINARY_ISLESS:
2043 case EXPR_BINARY_ISLESSEQUAL:
2044 case EXPR_BINARY_ISLESSGREATER:
2045 case EXPR_BINARY_ISUNORDERED: {
2046 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2047 ir_node *left = expression_to_firm(expression->left);
2048 ir_node *right = expression_to_firm(expression->right);
2049 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2050 long pnc = get_pnc(kind);
2051 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2054 case EXPR_BINARY_ASSIGN: {
2055 ir_node *right = expression_to_firm(expression->right);
2056 set_value_for_expression(expression->left, right);
2060 case EXPR_BINARY_ADD:
2061 return create_add(expression);
2062 case EXPR_BINARY_SUB:
2063 return create_sub(expression);
2064 case EXPR_BINARY_MUL:
2065 return create_arithmetic_binop(expression, new_d_Mul);
2066 case EXPR_BINARY_BITWISE_AND:
2067 return create_arithmetic_binop(expression, new_d_And);
2068 case EXPR_BINARY_BITWISE_OR:
2069 return create_arithmetic_binop(expression, new_d_Or);
2070 case EXPR_BINARY_BITWISE_XOR:
2071 return create_arithmetic_binop(expression, new_d_Eor);
2072 case EXPR_BINARY_SHIFTLEFT:
2073 case EXPR_BINARY_SHIFTRIGHT:
2074 return create_shift(expression);
2075 case EXPR_BINARY_DIV:
2076 case EXPR_BINARY_MOD:
2077 return create_divmod(expression);
2078 case EXPR_BINARY_LOGICAL_AND:
2079 case EXPR_BINARY_LOGICAL_OR:
2080 return create_lazy_op(expression);
2081 case EXPR_BINARY_COMMA:
2082 expression_to_firm(expression->left);
2083 return expression_to_firm(expression->right);
2084 case EXPR_BINARY_ADD_ASSIGN:
2085 return create_arithmetic_assign_binop(expression, new_d_Add);
2086 case EXPR_BINARY_SUB_ASSIGN:
2087 return create_arithmetic_assign_binop(expression, new_d_Sub);
2088 case EXPR_BINARY_MUL_ASSIGN:
2089 return create_arithmetic_assign_binop(expression, new_d_Mul);
2090 case EXPR_BINARY_DIV_ASSIGN:
2091 return create_arithmetic_assign_divmod(expression);
2092 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2093 return create_arithmetic_assign_binop(expression, new_d_And);
2094 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2095 return create_arithmetic_assign_binop(expression, new_d_Or);
2096 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2097 return create_arithmetic_assign_binop(expression, new_d_Eor);
2098 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2099 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2100 return create_arithmetic_assign_shift(expression);
2101 case EXPR_BINARY_BUILTIN_EXPECT:
2102 return expression_to_firm(expression->left);
2104 panic("TODO binexpr type");
2108 static ir_node *array_access_addr(const array_access_expression_t *expression)
2110 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2111 ir_node *base_addr = expression_to_firm(expression->array_ref);
2112 ir_node *offset = expression_to_firm(expression->index);
2113 offset = create_conv(dbgi, offset, mode_uint);
2115 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2116 assert(is_type_pointer(ref_type));
2117 pointer_type_t *pointer_type = &ref_type->pointer;
2119 unsigned elem_size = get_type_size(pointer_type->points_to);
2120 ir_node *elem_size_const = new_Const_long(mode_uint, elem_size);
2121 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2123 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2128 static ir_node *array_access_to_firm(
2129 const array_access_expression_t *expression)
2131 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2132 ir_node *addr = array_access_addr(expression);
2133 type_t *type = revert_automatic_type_conversion(
2134 (const expression_t*) expression);
2135 type = skip_typeref(type);
2136 ir_type *irtype = get_ir_type(type);
2138 return deref_address(irtype, addr, dbgi);
2142 * Transform a sizeof expression into Firm code.
2144 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2146 type_t *type = expression->type;
2148 type = expression->tp_expression->base.type;
2149 assert(type != NULL);
2152 ir_mode *const mode = get_ir_mode(expression->base.type);
2153 symconst_symbol sym;
2154 sym.type_p = get_ir_type(type);
2155 return new_SymConst(mode, sym, symconst_type_size);
2159 * Transform an alignof expression into Firm code.
2161 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2163 type_t *type = expression->type;
2165 /* beware: if expression is a variable reference, return the
2166 alignment of the variable. */
2167 const expression_t *tp_expression = expression->tp_expression;
2168 const declaration_t *declaration = expr_is_variable(tp_expression);
2169 if (declaration != NULL) {
2170 /* TODO: get the alignment of this variable. */
2172 type = tp_expression->base.type;
2173 assert(type != NULL);
2176 ir_mode *const mode = get_ir_mode(expression->base.type);
2177 symconst_symbol sym;
2178 sym.type_p = get_ir_type(type);
2179 return new_SymConst(mode, sym, symconst_type_align);
2182 static long fold_constant(const expression_t *expression)
2184 assert(is_constant_expression(expression));
2186 ir_graph *old_current_ir_graph = current_ir_graph;
2187 if(current_ir_graph == NULL) {
2188 current_ir_graph = get_const_code_irg();
2191 ir_node *cnst = expression_to_firm(expression);
2192 current_ir_graph = old_current_ir_graph;
2194 if(!is_Const(cnst)) {
2195 panic("couldn't fold constant\n");
2198 tarval *tv = get_Const_tarval(cnst);
2199 if(!tarval_is_long(tv)) {
2200 panic("result of constant folding is not integer\n");
2203 return get_tarval_long(tv);
2206 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2208 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2210 /* first try to fold a constant condition */
2211 if(is_constant_expression(expression->condition)) {
2212 long val = fold_constant(expression->condition);
2214 return expression_to_firm(expression->true_expression);
2216 return expression_to_firm(expression->false_expression);
2220 ir_node *cur_block = get_cur_block();
2222 /* create the true block */
2223 ir_node *true_block = new_immBlock();
2225 ir_node *true_val = expression_to_firm(expression->true_expression);
2226 ir_node *true_jmp = new_Jmp();
2228 /* create the false block */
2229 ir_node *false_block = new_immBlock();
2231 ir_node *false_val = expression_to_firm(expression->false_expression);
2232 ir_node *false_jmp = new_Jmp();
2234 /* create the condition evaluation */
2235 set_cur_block(cur_block);
2236 create_condition_evaluation(expression->condition, true_block, false_block);
2237 mature_immBlock(true_block);
2238 mature_immBlock(false_block);
2240 /* create the common block */
2241 ir_node *common_block = new_immBlock();
2242 add_immBlock_pred(common_block, true_jmp);
2243 add_immBlock_pred(common_block, false_jmp);
2244 mature_immBlock(common_block);
2246 /* TODO improve static semantics, so either both or no values are NULL */
2247 if (true_val == NULL || false_val == NULL)
2250 ir_node *in[2] = { true_val, false_val };
2251 ir_mode *mode = get_irn_mode(true_val);
2252 assert(get_irn_mode(false_val) == mode);
2253 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2258 static ir_node *select_addr(const select_expression_t *expression)
2260 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2262 ir_node *compound_addr = expression_to_firm(expression->compound);
2264 declaration_t *entry = expression->compound_entry;
2265 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2266 ir_entity *entity = entry->v.entity;
2268 assert(entity != NULL);
2270 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2275 static ir_node *select_to_firm(const select_expression_t *expression)
2277 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2278 ir_node *addr = select_addr(expression);
2279 type_t *type = revert_automatic_type_conversion(
2280 (const expression_t*) expression);
2281 type = skip_typeref(type);
2282 ir_type *irtype = get_ir_type(type);
2284 return deref_address(irtype, addr, dbgi);
2287 /* Values returned by __builtin_classify_type. */
2288 typedef enum gcc_type_class
2294 enumeral_type_class,
2297 reference_type_class,
2301 function_type_class,
2312 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2314 const type_t *const type = expr->type_expression->base.type;
2320 const atomic_type_t *const atomic_type = &type->atomic;
2321 switch (atomic_type->akind) {
2322 /* should not be reached */
2323 case ATOMIC_TYPE_INVALID:
2327 /* gcc cannot do that */
2328 case ATOMIC_TYPE_VOID:
2329 tc = void_type_class;
2332 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2333 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2334 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2335 case ATOMIC_TYPE_SHORT:
2336 case ATOMIC_TYPE_USHORT:
2337 case ATOMIC_TYPE_INT:
2338 case ATOMIC_TYPE_UINT:
2339 case ATOMIC_TYPE_LONG:
2340 case ATOMIC_TYPE_ULONG:
2341 case ATOMIC_TYPE_LONGLONG:
2342 case ATOMIC_TYPE_ULONGLONG:
2343 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2344 tc = integer_type_class;
2347 case ATOMIC_TYPE_FLOAT:
2348 case ATOMIC_TYPE_DOUBLE:
2349 case ATOMIC_TYPE_LONG_DOUBLE:
2350 tc = real_type_class;
2353 #ifdef PROVIDE_COMPLEX
2354 case ATOMIC_TYPE_FLOAT_COMPLEX:
2355 case ATOMIC_TYPE_DOUBLE_COMPLEX:
2356 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
2357 tc = complex_type_class;
2359 case ATOMIC_TYPE_FLOAT_IMAGINARY:
2360 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
2361 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
2362 tc = complex_type_class;
2367 panic("Unimplemented case in classify_type_to_firm().");
2372 case TYPE_ARRAY: /* gcc handles this as pointer */
2373 case TYPE_FUNCTION: /* gcc handles this as pointer */
2374 case TYPE_POINTER: tc = pointer_type_class; break;
2375 case TYPE_COMPOUND_STRUCT: tc = record_type_class; break;
2376 case TYPE_COMPOUND_UNION: tc = union_type_class; break;
2378 /* gcc handles this as integer */
2379 case TYPE_ENUM: tc = integer_type_class; break;
2382 panic("Unimplemented case in classify_type_to_firm().");
2385 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2386 ir_mode *const mode = mode_int;
2387 tarval *const tv = new_tarval_from_long(tc, mode);
2388 return new_d_Const(dbgi, mode, tv);
2391 static ir_node *function_name_to_firm(
2392 const string_literal_expression_t *const expr)
2394 if (current_function_name == NULL) {
2395 const source_position_t *const src_pos = &expr->base.source_position;
2396 const char *const name = current_function_decl->symbol->string;
2397 const string_t string = { name, strlen(name) + 1 };
2398 current_function_name = string_to_firm(src_pos, "__func__", &string);
2401 return current_function_name;
2404 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2406 statement_t *statement = expr->statement;
2408 assert(statement->kind == STATEMENT_COMPOUND);
2409 return compound_statement_to_firm(&statement->compound);
2412 static ir_node *va_start_expression_to_firm(
2413 const va_start_expression_t *const expr)
2415 ir_type *const method_type = get_ir_type(current_function_decl->type);
2416 int const n = get_method_n_params(method_type) - 1;
2417 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2418 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2419 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2420 ir_node *const no_mem = new_NoMem();
2421 ir_node *const arg_sel =
2422 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2424 size_t const parm_size = get_type_size(expr->parameter->type);
2425 ir_node *const cnst = new_Const_long(mode_uint, parm_size);
2426 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2427 set_value_for_expression(expr->ap, add);
2432 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2434 ir_type *const irtype = get_ir_type(expr->base.type);
2435 ir_node *const ap = expression_to_firm(expr->ap);
2436 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2437 ir_node *const res = deref_address(irtype, ap, dbgi);
2439 size_t const parm_size = get_type_size(expr->base.type);
2440 ir_node *const cnst = new_Const_long(mode_uint, parm_size);
2441 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2442 set_value_for_expression(expr->ap, add);
2447 static ir_node *dereference_addr(const unary_expression_t *const expression)
2449 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2450 return expression_to_firm(expression->value);
2453 static ir_node *expression_to_addr(const expression_t *expression)
2455 switch(expression->kind) {
2456 case EXPR_REFERENCE:
2457 return reference_addr(&expression->reference);
2458 case EXPR_ARRAY_ACCESS:
2459 return array_access_addr(&expression->array_access);
2461 return select_addr(&expression->select);
2463 return call_expression_to_firm(&expression->call);
2464 case EXPR_UNARY_DEREFERENCE: {
2465 return dereference_addr(&expression->unary);
2470 panic("trying to get address of non-lvalue");
2473 static ir_node *builtin_constant_to_firm(
2474 const builtin_constant_expression_t *expression)
2476 ir_mode *mode = get_ir_mode(expression->base.type);
2479 if (is_constant_expression(expression->value)) {
2484 return new_Const_long(mode, v);
2487 static ir_node *builtin_prefetch_to_firm(
2488 const builtin_prefetch_expression_t *expression)
2490 ir_node *adr = expression_to_firm(expression->adr);
2491 /* no Firm support for prefetch yet */
2496 static ir_node *_expression_to_firm(const expression_t *expression)
2498 switch(expression->kind) {
2500 return const_to_firm(&expression->conste);
2501 case EXPR_STRING_LITERAL:
2502 return string_literal_to_firm(&expression->string);
2503 case EXPR_WIDE_STRING_LITERAL:
2504 return wide_string_literal_to_firm(&expression->wide_string);
2505 case EXPR_REFERENCE:
2506 return reference_expression_to_firm(&expression->reference);
2508 return call_expression_to_firm(&expression->call);
2510 return unary_expression_to_firm(&expression->unary);
2512 return binary_expression_to_firm(&expression->binary);
2513 case EXPR_ARRAY_ACCESS:
2514 return array_access_to_firm(&expression->array_access);
2516 return sizeof_to_firm(&expression->typeprop);
2518 return alignof_to_firm(&expression->typeprop);
2519 case EXPR_CONDITIONAL:
2520 return conditional_to_firm(&expression->conditional);
2522 return select_to_firm(&expression->select);
2523 case EXPR_CLASSIFY_TYPE:
2524 return classify_type_to_firm(&expression->classify_type);
2526 case EXPR_PRETTY_FUNCTION:
2527 return function_name_to_firm(&expression->string);
2528 case EXPR_STATEMENT:
2529 return statement_expression_to_firm(&expression->statement);
2531 return va_start_expression_to_firm(&expression->va_starte);
2533 return va_arg_expression_to_firm(&expression->va_arge);
2535 case EXPR_BUILTIN_SYMBOL:
2536 panic("unimplemented expression found");
2537 case EXPR_BUILTIN_CONSTANT_P:
2538 return builtin_constant_to_firm(&expression->builtin_constant);
2539 case EXPR_BUILTIN_PREFETCH:
2540 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
2546 panic("invalid expression found");
2549 static ir_node *expression_to_firm(const expression_t *expression)
2551 ir_node *res = _expression_to_firm(expression);
2553 if(res != NULL && get_irn_mode(res) == mode_b) {
2554 ir_mode *mode = get_ir_mode(expression->base.type);
2555 res = create_conv(NULL, res, mode);
2561 static ir_node *expression_to_modeb(const expression_t *expression)
2563 ir_node *res = _expression_to_firm(expression);
2564 res = create_conv(NULL, res, mode_b);
2570 * create a short-circuit expression evaluation that tries to construct
2571 * efficient control flow structures for &&, || and ! expressions
2573 static void create_condition_evaluation(const expression_t *expression,
2574 ir_node *true_block,
2575 ir_node *false_block)
2577 switch(expression->kind) {
2578 case EXPR_UNARY_NOT: {
2579 const unary_expression_t *unary_expression = &expression->unary;
2580 create_condition_evaluation(unary_expression->value, false_block,
2584 case EXPR_BINARY_LOGICAL_AND: {
2585 const binary_expression_t *binary_expression = &expression->binary;
2587 ir_node *cur_block = get_cur_block();
2588 ir_node *extra_block = new_immBlock();
2589 set_cur_block(cur_block);
2590 create_condition_evaluation(binary_expression->left, extra_block,
2592 mature_immBlock(extra_block);
2593 set_cur_block(extra_block);
2594 create_condition_evaluation(binary_expression->right, true_block,
2598 case EXPR_BINARY_LOGICAL_OR: {
2599 const binary_expression_t *binary_expression = &expression->binary;
2601 ir_node *cur_block = get_cur_block();
2602 ir_node *extra_block = new_immBlock();
2603 set_cur_block(cur_block);
2604 create_condition_evaluation(binary_expression->left, true_block,
2606 mature_immBlock(extra_block);
2607 set_cur_block(extra_block);
2608 create_condition_evaluation(binary_expression->right, true_block,
2616 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2617 ir_node *condition = expression_to_modeb(expression);
2618 ir_node *cond = new_d_Cond(dbgi, condition);
2619 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
2620 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
2622 /* set branch prediction info based on __builtin_expect */
2623 if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
2624 long cnst = fold_constant(expression->binary.right);
2625 cond_jmp_predicate pred;
2628 pred = COND_JMP_PRED_FALSE;
2630 pred = COND_JMP_PRED_TRUE;
2632 set_Cond_jmp_pred(cond, pred);
2635 add_immBlock_pred(true_block, true_proj);
2636 add_immBlock_pred(false_block, false_proj);
2638 set_cur_block(NULL);
2643 static void create_declaration_entity(declaration_t *declaration,
2644 declaration_kind_t declaration_kind,
2645 ir_type *parent_type)
2647 ident *const id = new_id_from_str(declaration->symbol->string);
2648 ir_type *const irtype = get_ir_type(declaration->type);
2649 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
2650 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
2651 set_entity_ld_ident(entity, id);
2653 declaration->declaration_kind = (unsigned char) declaration_kind;
2654 declaration->v.entity = entity;
2655 set_entity_variability(entity, variability_uninitialized);
2656 if(parent_type == get_tls_type())
2657 set_entity_allocation(entity, allocation_automatic);
2658 else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
2659 set_entity_allocation(entity, allocation_static);
2660 /* TODO: visibility? */
2663 typedef struct compound_graph_path_entry_t compound_graph_path_entry_t;
2665 enum compound_graph_entry_type_t {
2666 COMPOUND_GRAPH_ENTRY_ARRAY,
2667 COMPOUND_GRAPH_ENTRY_COMPOUND
2670 struct compound_graph_path_entry_t {
2676 compound_graph_path_entry_t *prev;
2679 static void create_initializer_object(initializer_t *initializer, type_t *type,
2680 ir_entity *entity, compound_graph_path_entry_t *entry, int len);
2682 static compound_graph_path *create_compound_path(ir_type *type,
2683 compound_graph_path_entry_t *entry, int len)
2685 compound_graph_path *path = new_compound_graph_path(type, len);
2688 for( ; entry != NULL; entry = entry->prev, --i) {
2690 if(entry->type == COMPOUND_GRAPH_ENTRY_COMPOUND) {
2691 set_compound_graph_path_node(path, i, entry->v.entity);
2693 assert(entry->type == COMPOUND_GRAPH_ENTRY_ARRAY);
2694 set_compound_graph_path_array_index(path, i, entry->v.array_index);
2702 static void create_initializer_value(initializer_value_t *initializer,
2704 compound_graph_path_entry_t *entry,
2707 ir_node *node = expression_to_firm(initializer->value);
2708 ir_type *type = get_entity_type(entity);
2709 compound_graph_path *path = create_compound_path(type, entry, len);
2710 add_compound_ent_value_w_path(entity, node, path);
2713 static void create_initializer_compound(initializer_list_t *initializer,
2714 compound_type_t *type,
2716 compound_graph_path_entry_t *last_entry,
2719 declaration_t *compound_declaration = type->declaration;
2721 declaration_t *compound_entry = compound_declaration->scope.declarations;
2723 compound_graph_path_entry_t entry;
2724 entry.type = COMPOUND_GRAPH_ENTRY_COMPOUND;
2725 entry.prev = last_entry;
2729 for( ; compound_entry != NULL; compound_entry = compound_entry->next) {
2730 if(compound_entry->symbol == NULL)
2732 if(compound_entry->namespc != NAMESPACE_NORMAL)
2735 if(i >= initializer->len)
2738 entry.v.entity = compound_entry->v.entity;
2740 initializer_t *sub_initializer = initializer->initializers[i];
2742 assert(compound_entry != NULL);
2743 assert(compound_entry->declaration_kind
2744 == DECLARATION_KIND_COMPOUND_MEMBER);
2746 if(sub_initializer->kind == INITIALIZER_VALUE) {
2747 create_initializer_value(&sub_initializer->value,
2748 entity, &entry, len);
2750 type_t *entry_type = skip_typeref(compound_entry->type);
2751 create_initializer_object(sub_initializer, entry_type, entity,
2759 static void create_initializer_array(initializer_list_t *initializer,
2760 array_type_t *type, ir_entity *entity,
2761 compound_graph_path_entry_t *last_entry,
2764 type_t *element_type = type->element_type;
2765 element_type = skip_typeref(element_type);
2767 compound_graph_path_entry_t entry;
2768 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2769 entry.prev = last_entry;
2773 for(i = 0; i < initializer->len; ++i) {
2774 entry.v.array_index = i;
2776 initializer_t *sub_initializer = initializer->initializers[i];
2778 if(sub_initializer->kind == INITIALIZER_VALUE) {
2779 create_initializer_value(&sub_initializer->value,
2780 entity, &entry, len);
2782 create_initializer_object(sub_initializer, element_type, entity,
2788 /* TODO: initialize rest... */
2789 if(type->size_expression != NULL) {
2790 size_t array_len = fold_constant(type->size_expression);
2791 for( ; i < array_len; ++i) {
2798 static void create_initializer_string(initializer_string_t *initializer,
2799 array_type_t *type, ir_entity *entity,
2800 compound_graph_path_entry_t *last_entry,
2803 type_t *element_type = type->element_type;
2804 element_type = skip_typeref(element_type);
2806 compound_graph_path_entry_t entry;
2807 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2808 entry.prev = last_entry;
2811 ir_type *const irtype = get_entity_type(entity);
2812 size_t arr_len = get_array_type_size(type);
2813 const char *const p = initializer->string.begin;
2814 if (initializer->string.size < arr_len) {
2815 arr_len = initializer->string.size;
2817 for (size_t i = 0; i < arr_len; ++i) {
2818 entry.v.array_index = i;
2820 ir_node *node = new_Const_long(mode_Bs, p[i]);
2821 compound_graph_path *path = create_compound_path(irtype, &entry, len);
2822 add_compound_ent_value_w_path(entity, node, path);
2826 static void create_initializer_wide_string(
2827 const initializer_wide_string_t *const initializer, array_type_t *const type,
2828 ir_entity *const entity, compound_graph_path_entry_t *const last_entry,
2831 type_t *element_type = type->element_type;
2832 element_type = skip_typeref(element_type);
2834 compound_graph_path_entry_t entry;
2835 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2836 entry.prev = last_entry;
2839 ir_type *const irtype = get_entity_type(entity);
2840 const size_t arr_len = get_array_type_size(type);
2841 const wchar_rep_t * p = initializer->string.begin;
2842 const wchar_rep_t *const end = p + initializer->string.size;
2843 for (size_t i = 0; i < arr_len && p != end; ++i, ++p) {
2844 entry.v.array_index = i;
2846 ir_node *node = new_Const_long(mode_int, *p);
2847 compound_graph_path *path = create_compound_path(irtype, &entry, len);
2848 add_compound_ent_value_w_path(entity, node, path);
2852 static void create_initializer_object(initializer_t *initializer, type_t *type,
2853 ir_entity *entity, compound_graph_path_entry_t *entry, int len)
2855 if(is_type_array(type)) {
2856 array_type_t *array_type = &type->array;
2858 switch (initializer->kind) {
2859 case INITIALIZER_STRING: {
2860 initializer_string_t *const string = &initializer->string;
2861 create_initializer_string(string, array_type, entity, entry, len);
2865 case INITIALIZER_WIDE_STRING: {
2866 initializer_wide_string_t *const string = &initializer->wide_string;
2867 create_initializer_wide_string(string, array_type, entity, entry, len);
2871 case INITIALIZER_LIST: {
2872 initializer_list_t *const list = &initializer->list;
2873 create_initializer_array(list, array_type, entity, entry, len);
2877 case INITIALIZER_VALUE:
2880 panic("Unhandled initializer");
2882 assert(initializer->kind == INITIALIZER_LIST);
2883 initializer_list_t *list = &initializer->list;
2885 assert(is_type_compound(type));
2886 compound_type_t *compound_type = &type->compound;
2887 create_initializer_compound(list, compound_type, entity, entry, len);
2891 static void create_initializer_local_variable_entity(declaration_t *declaration)
2893 initializer_t *initializer = declaration->init.initializer;
2894 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
2895 ir_entity *entity = declaration->v.entity;
2896 ir_node *memory = get_store();
2897 ir_node *nomem = new_NoMem();
2898 ir_node *frame = get_irg_frame(current_ir_graph);
2899 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
2901 if(initializer->kind == INITIALIZER_VALUE) {
2902 initializer_value_t *initializer_value = &initializer->value;
2904 ir_node *value = expression_to_firm(initializer_value->value);
2905 type_t *type = skip_typeref(declaration->type);
2906 assign_value(dbgi, addr, type, value);
2910 /* create a "template" entity which is copied to the entity on the stack */
2911 ident *const id = unique_ident("initializer");
2912 ir_type *const irtype = get_ir_type(declaration->type);
2913 ir_type *const global_type = get_glob_type();
2914 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
2915 set_entity_ld_ident(init_entity, id);
2917 set_entity_variability(init_entity, variability_initialized);
2918 set_entity_visibility(init_entity, visibility_local);
2919 set_entity_allocation(init_entity, allocation_static);
2921 ir_graph *const old_current_ir_graph = current_ir_graph;
2922 current_ir_graph = get_const_code_irg();
2924 type_t *const type = skip_typeref(declaration->type);
2925 create_initializer_object(initializer, type, init_entity, NULL, 0);
2927 assert(current_ir_graph == get_const_code_irg());
2928 current_ir_graph = old_current_ir_graph;
2930 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
2931 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
2933 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
2934 set_store(copyb_mem);
2937 static void create_initializer(declaration_t *declaration)
2939 initializer_t *initializer = declaration->init.initializer;
2940 if(initializer == NULL)
2943 declaration_kind_t declaration_kind
2944 = (declaration_kind_t) declaration->declaration_kind;
2945 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
2946 create_initializer_local_variable_entity(declaration);
2950 if(initializer->kind == INITIALIZER_VALUE) {
2951 initializer_value_t *initializer_value = &initializer->value;
2953 ir_node *value = expression_to_firm(initializer_value->value);
2955 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2956 set_value(declaration->v.value_number, value);
2958 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
2960 ir_entity *entity = declaration->v.entity;
2962 set_entity_variability(entity, variability_initialized);
2963 set_atomic_ent_value(entity, value);
2966 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
2967 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
2969 ir_entity *entity = declaration->v.entity;
2970 set_entity_variability(entity, variability_initialized);
2972 type_t *type = skip_typeref(declaration->type);
2973 create_initializer_object(initializer, type, entity, NULL, 0);
2978 * Creates a Firm local variable from a declaration.
2980 static void create_local_variable(declaration_t *declaration)
2982 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
2984 bool needs_entity = declaration->address_taken;
2985 type_t *type = skip_typeref(declaration->type);
2987 if(is_type_array(type) || is_type_compound(type)) {
2988 needs_entity = true;
2992 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2993 create_declaration_entity(declaration,
2994 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
2997 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
2998 declaration->v.value_number = next_value_number_function;
2999 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3000 ++next_value_number_function;
3003 create_initializer(declaration);
3006 static void create_local_static_variable(declaration_t *declaration)
3008 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3010 type_t *const type = skip_typeref(declaration->type);
3011 ir_type *const global_type = get_glob_type();
3012 ident *const id = unique_ident(declaration->symbol->string);
3013 ir_type *const irtype = get_ir_type(type);
3014 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3015 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
3016 set_entity_ld_ident(entity, id);
3018 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3019 declaration->v.entity = entity;
3020 set_entity_variability(entity, variability_uninitialized);
3021 set_entity_visibility(entity, visibility_local);
3022 set_entity_allocation(entity, allocation_static);
3024 ir_graph *const old_current_ir_graph = current_ir_graph;
3025 current_ir_graph = get_const_code_irg();
3027 create_initializer(declaration);
3029 assert(current_ir_graph == get_const_code_irg());
3030 current_ir_graph = old_current_ir_graph;
3035 static void return_statement_to_firm(return_statement_t *statement)
3037 if(get_cur_block() == NULL)
3040 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3041 ir_type *func_irtype = get_ir_type(current_function_decl->type);
3046 if(get_method_n_ress(func_irtype) > 0) {
3047 ir_type *res_type = get_method_res_type(func_irtype, 0);
3049 if(statement->value != NULL) {
3050 ir_node *node = expression_to_firm(statement->value);
3051 node = do_strict_conv(dbgi, node);
3055 if(is_compound_type(res_type)) {
3058 mode = get_type_mode(res_type);
3060 in[0] = new_Unknown(mode);
3064 /* build return_value for its side effects */
3065 if(statement->value != NULL) {
3066 expression_to_firm(statement->value);
3071 ir_node *store = get_store();
3072 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
3074 ir_node *end_block = get_irg_end_block(current_ir_graph);
3075 add_immBlock_pred(end_block, ret);
3077 set_cur_block(NULL);
3080 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3082 if(get_cur_block() == NULL)
3085 return expression_to_firm(statement->expression);
3088 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3090 ir_node *result = NULL;
3091 statement_t *statement = compound->statements;
3092 for( ; statement != NULL; statement = statement->base.next) {
3093 //context2firm(&statement->scope);
3095 if(statement->base.next == NULL
3096 && statement->kind == STATEMENT_EXPRESSION) {
3097 result = expression_statement_to_firm(
3098 &statement->expression);
3101 statement_to_firm(statement);
3107 static void create_local_declaration(declaration_t *declaration)
3109 type_t *type = skip_typeref(declaration->type);
3111 switch ((storage_class_tag_t) declaration->storage_class) {
3112 case STORAGE_CLASS_STATIC:
3113 create_local_static_variable(declaration);
3115 case STORAGE_CLASS_ENUM_ENTRY:
3116 panic("enum entry declaration in local block found");
3117 case STORAGE_CLASS_EXTERN:
3118 panic("extern declaration in local block found");
3119 case STORAGE_CLASS_NONE:
3120 case STORAGE_CLASS_AUTO:
3121 case STORAGE_CLASS_REGISTER:
3122 if(is_type_function(type)) {
3123 panic("nested functions not supported yet");
3125 create_local_variable(declaration);
3128 case STORAGE_CLASS_TYPEDEF:
3129 case STORAGE_CLASS_THREAD:
3130 case STORAGE_CLASS_THREAD_EXTERN:
3131 case STORAGE_CLASS_THREAD_STATIC:
3134 panic("invalid storage class found");
3137 static void declaration_statement_to_firm(declaration_statement_t *statement)
3139 declaration_t *declaration = statement->declarations_begin;
3140 declaration_t *end = statement->declarations_end->next;
3141 for( ; declaration != end; declaration = declaration->next) {
3142 if(declaration->namespc != NAMESPACE_NORMAL)
3144 create_local_declaration(declaration);
3148 static void if_statement_to_firm(if_statement_t *statement)
3150 ir_node *cur_block = get_cur_block();
3152 ir_node *fallthrough_block = new_immBlock();
3154 /* the true (blocks) */
3155 ir_node *true_block;
3156 if (statement->true_statement != NULL) {
3157 true_block = new_immBlock();
3158 statement_to_firm(statement->true_statement);
3159 if(get_cur_block() != NULL) {
3160 ir_node *jmp = new_Jmp();
3161 add_immBlock_pred(fallthrough_block, jmp);
3164 true_block = fallthrough_block;
3167 /* the false (blocks) */
3168 ir_node *false_block;
3169 if(statement->false_statement != NULL) {
3170 false_block = new_immBlock();
3172 statement_to_firm(statement->false_statement);
3173 if(get_cur_block() != NULL) {
3174 ir_node *jmp = new_Jmp();
3175 add_immBlock_pred(fallthrough_block, jmp);
3178 false_block = fallthrough_block;
3181 /* create the condition */
3182 if(cur_block != NULL) {
3183 set_cur_block(cur_block);
3184 create_condition_evaluation(statement->condition, true_block,
3188 mature_immBlock(true_block);
3189 if(false_block != fallthrough_block) {
3190 mature_immBlock(false_block);
3192 mature_immBlock(fallthrough_block);
3194 set_cur_block(fallthrough_block);
3197 static void while_statement_to_firm(while_statement_t *statement)
3199 ir_node *jmp = NULL;
3200 if(get_cur_block() != NULL) {
3204 /* create the header block */
3205 ir_node *header_block = new_immBlock();
3207 add_immBlock_pred(header_block, jmp);
3210 /* the false block */
3211 ir_node *false_block = new_immBlock();
3214 ir_node *body_block;
3215 if (statement->body != NULL) {
3216 ir_node *old_continue_label = continue_label;
3217 ir_node *old_break_label = break_label;
3218 continue_label = header_block;
3219 break_label = false_block;
3221 body_block = new_immBlock();
3222 statement_to_firm(statement->body);
3224 assert(continue_label == header_block);
3225 assert(break_label == false_block);
3226 continue_label = old_continue_label;
3227 break_label = old_break_label;
3229 if(get_cur_block() != NULL) {
3231 add_immBlock_pred(header_block, jmp);
3234 body_block = header_block;
3237 /* create the condition */
3238 set_cur_block(header_block);
3240 create_condition_evaluation(statement->condition, body_block, false_block);
3241 mature_immBlock(body_block);
3242 mature_immBlock(false_block);
3243 mature_immBlock(header_block);
3245 set_cur_block(false_block);
3248 static void do_while_statement_to_firm(do_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 /* the false block */
3259 ir_node *false_block = new_immBlock();
3262 ir_node *body_block = new_immBlock();
3264 add_immBlock_pred(body_block, jmp);
3267 if (statement->body != NULL) {
3268 ir_node *old_continue_label = continue_label;
3269 ir_node *old_break_label = break_label;
3270 continue_label = header_block;
3271 break_label = false_block;
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) {
3281 mature_immBlock(header_block);
3282 mature_immBlock(body_block);
3283 mature_immBlock(false_block);
3288 ir_node *body_jmp = new_Jmp();
3289 add_immBlock_pred(header_block, body_jmp);
3290 mature_immBlock(header_block);
3292 /* create the condition */
3293 set_cur_block(header_block);
3295 create_condition_evaluation(statement->condition, body_block, false_block);
3296 mature_immBlock(body_block);
3297 mature_immBlock(false_block);
3298 mature_immBlock(header_block);
3300 set_cur_block(false_block);
3303 static void for_statement_to_firm(for_statement_t *statement)
3305 ir_node *jmp = NULL;
3306 if (get_cur_block() != NULL) {
3307 if(statement->initialisation != NULL) {
3308 expression_to_firm(statement->initialisation);
3311 /* create declarations */
3312 declaration_t *declaration = statement->scope.declarations;
3313 for( ; declaration != NULL; declaration = declaration->next) {
3314 create_local_declaration(declaration);
3321 /* create the step block */
3322 ir_node *const step_block = new_immBlock();
3323 if (statement->step != NULL) {
3324 expression_to_firm(statement->step);
3326 ir_node *const step_jmp = new_Jmp();
3328 /* create the header block */
3329 ir_node *const header_block = new_immBlock();
3331 add_immBlock_pred(header_block, jmp);
3333 add_immBlock_pred(header_block, step_jmp);
3335 /* the false block */
3336 ir_node *const false_block = new_immBlock();
3339 ir_node * body_block;
3340 if (statement->body != NULL) {
3341 ir_node *const old_continue_label = continue_label;
3342 ir_node *const old_break_label = break_label;
3343 continue_label = step_block;
3344 break_label = false_block;
3346 body_block = new_immBlock();
3347 statement_to_firm(statement->body);
3349 assert(continue_label == step_block);
3350 assert(break_label == false_block);
3351 continue_label = old_continue_label;
3352 break_label = old_break_label;
3354 if (get_cur_block() != NULL) {
3356 add_immBlock_pred(step_block, jmp);
3359 body_block = step_block;
3362 /* create the condition */
3363 set_cur_block(header_block);
3364 if (statement->condition != NULL) {
3365 create_condition_evaluation(statement->condition, body_block,
3368 keep_alive(header_block);
3370 add_immBlock_pred(body_block, jmp);
3373 mature_immBlock(body_block);
3374 mature_immBlock(false_block);
3375 mature_immBlock(step_block);
3376 mature_immBlock(header_block);
3377 mature_immBlock(false_block);
3379 set_cur_block(false_block);
3382 static void create_jump_statement(const statement_t *statement,
3383 ir_node *target_block)
3385 if(get_cur_block() == NULL)
3388 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3389 ir_node *jump = new_d_Jmp(dbgi);
3390 add_immBlock_pred(target_block, jump);
3392 set_cur_block(NULL);
3395 static void switch_statement_to_firm(const switch_statement_t *statement)
3397 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3399 ir_node *expression = expression_to_firm(statement->expression);
3400 ir_node *cond = new_d_Cond(dbgi, expression);
3401 ir_node *break_block = new_immBlock();
3403 set_cur_block(NULL);
3405 ir_node *const old_switch_cond = current_switch_cond;
3406 ir_node *const old_break_label = break_label;
3407 const bool old_saw_default_label = saw_default_label;
3408 current_switch_cond = cond;
3409 break_label = break_block;
3411 if (statement->body != NULL) {
3412 statement_to_firm(statement->body);
3415 if(get_cur_block() != NULL) {
3416 ir_node *jmp = new_Jmp();
3417 add_immBlock_pred(break_block, jmp);
3420 if (!saw_default_label) {
3421 set_cur_block(get_nodes_block(cond));
3422 ir_node *const proj = new_d_defaultProj(dbgi, cond,
3423 MAGIC_DEFAULT_PN_NUMBER);
3424 add_immBlock_pred(break_block, proj);
3427 assert(current_switch_cond == cond);
3428 assert(break_label == break_block);
3429 current_switch_cond = old_switch_cond;
3430 break_label = old_break_label;
3431 saw_default_label = old_saw_default_label;
3433 mature_immBlock(break_block);
3434 set_cur_block(break_block);
3437 static void case_label_to_firm(const case_label_statement_t *statement)
3439 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3441 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
3443 /* let's create a node and hope firm constant folding creates a Const
3446 set_cur_block(get_nodes_block(current_switch_cond));
3447 if(statement->expression) {
3448 long pn = fold_constant(statement->expression);
3449 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
3450 /* oops someone detected our cheating... */
3451 panic("magic default pn used");
3453 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
3455 saw_default_label = true;
3456 proj = new_d_defaultProj(dbgi, current_switch_cond,
3457 MAGIC_DEFAULT_PN_NUMBER);
3460 ir_node *block = new_immBlock();
3461 if (fallthrough != NULL) {
3462 add_immBlock_pred(block, fallthrough);
3464 add_immBlock_pred(block, proj);
3465 mature_immBlock(block);
3467 if(statement->statement != NULL) {
3468 statement_to_firm(statement->statement);
3472 static ir_node *get_label_block(declaration_t *label)
3474 assert(label->namespc == NAMESPACE_LABEL);
3476 if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
3477 return label->v.block;
3479 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
3481 ir_node *old_cur_block = get_cur_block();
3482 ir_node *block = new_immBlock();
3483 set_cur_block(old_cur_block);
3485 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
3486 label->v.block = block;
3488 ARR_APP1(ir_node *, imature_blocks, block);
3493 static void label_to_firm(const label_statement_t *statement)
3495 ir_node *block = get_label_block(statement->label);
3497 if(get_cur_block() != NULL) {
3498 ir_node *jmp = new_Jmp();
3499 add_immBlock_pred(block, jmp);
3502 set_cur_block(block);
3505 if(statement->statement != NULL) {
3506 statement_to_firm(statement->statement);
3510 static void goto_to_firm(const goto_statement_t *statement)
3512 if(get_cur_block() == NULL)
3515 ir_node *block = get_label_block(statement->label);
3516 ir_node *jmp = new_Jmp();
3517 add_immBlock_pred(block, jmp);
3519 set_cur_block(NULL);
3522 typedef enum modifier_t {
3523 ASM_MODIFIER_WRITE_ONLY = 1 << 0,
3524 ASM_MODIFIER_READ_WRITE = 1 << 1,
3525 ASM_MODIFIER_COMMUTATIVE = 1 << 2,
3526 ASM_MODIFIER_EARLYCLOBBER = 1 << 3,
3530 static void asm_statement_to_firm(const asm_statement_t *statement)
3532 bool needs_memory = false;
3534 size_t n_clobbers = 0;
3535 asm_clobber_t *clobber = statement->clobbers;
3536 for( ; clobber != NULL; clobber = clobber->next) {
3537 if(strcmp(clobber->clobber, "memory") == 0) {
3538 needs_memory = true;
3542 ident *id = new_id_from_str(clobber->clobber);
3543 obstack_ptr_grow(&asm_obst, id);
3546 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
3547 ident **clobbers = NULL;
3548 if(n_clobbers > 0) {
3549 clobbers = obstack_finish(&asm_obst);
3552 /* find and count input and output constraints */
3553 asm_constraint_t *constraint = statement->inputs;
3554 for( ; constraint != NULL; constraint = constraint->next) {
3556 bool supports_memop = false;
3557 for(const char *c = constraint->constraints; *c != 0; ++c) {
3558 /* TODO: improve error messages */
3562 panic("multiple alternative assembler constraints not "
3570 supports_memop = true;
3571 obstack_1grow(&asm_obst, *c);
3574 if(modifiers & ASM_MODIFIER_READ_WRITE)
3575 panic("inconsistent register constraints");
3576 modifiers |= ASM_MODIFIER_WRITE_ONLY;
3579 if(modifiers & ASM_MODIFIER_WRITE_ONLY)
3580 panic("inconsistent register constraints");
3581 modifiers |= ASM_MODIFIER_READ_WRITE;
3584 modifiers |= ASM_MODIFIER_EARLYCLOBBER;
3585 panic("early clobber assembler constraint not supported yet");
3588 modifiers |= ASM_MODIFIER_COMMUTATIVE;
3589 panic("commutative assembler constraint not supported yet");
3592 /* skip register preferences stuff... */
3593 while(*c != 0 && *c != ',')
3597 /* skip register preferences stuff... */
3601 obstack_1grow(&asm_obst, *c);
3605 obstack_1grow(&asm_obst, '\0');
3606 const char *constraint_string = obstack_finish(&asm_obst);
3608 needs_memory |= supports_memop;
3609 if(supports_memop) {
3617 static void statement_to_firm(statement_t *statement)
3619 switch(statement->kind) {
3620 case STATEMENT_INVALID:
3621 panic("invalid statement found");
3622 case STATEMENT_COMPOUND:
3623 compound_statement_to_firm(&statement->compound);
3625 case STATEMENT_RETURN:
3626 return_statement_to_firm(&statement->returns);
3628 case STATEMENT_EXPRESSION:
3629 expression_statement_to_firm(&statement->expression);
3632 if_statement_to_firm(&statement->ifs);
3634 case STATEMENT_WHILE:
3635 while_statement_to_firm(&statement->whiles);
3637 case STATEMENT_DO_WHILE:
3638 do_while_statement_to_firm(&statement->do_while);
3640 case STATEMENT_DECLARATION:
3641 declaration_statement_to_firm(&statement->declaration);
3643 case STATEMENT_BREAK:
3644 create_jump_statement(statement, break_label);
3646 case STATEMENT_CONTINUE:
3647 create_jump_statement(statement, continue_label);
3649 case STATEMENT_SWITCH:
3650 switch_statement_to_firm(&statement->switchs);
3652 case STATEMENT_CASE_LABEL:
3653 case_label_to_firm(&statement->case_label);
3656 for_statement_to_firm(&statement->fors);
3658 case STATEMENT_LABEL:
3659 label_to_firm(&statement->label);
3661 case STATEMENT_GOTO:
3662 goto_to_firm(&statement->gotos);
3665 //asm_statement_to_firm(&statement->asms);
3669 panic("Statement not implemented\n");
3672 static int count_decls_in_expression(const expression_t *expression);
3674 static int count_local_declarations(const declaration_t * decl,
3675 const declaration_t *const end)
3678 for (; decl != end; decl = decl->next) {
3679 if(decl->namespc != NAMESPACE_NORMAL)
3681 const type_t *type = skip_typeref(decl->type);
3682 if (!decl->address_taken && is_type_scalar(type))
3684 const initializer_t *initializer = decl->init.initializer;
3685 /* FIXME: should walk initializer hierarchies... */
3686 if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
3687 count += count_decls_in_expression(initializer->value.value);
3693 static int count_decls_in_expression(const expression_t *expression) {
3694 if(expression == NULL)
3697 switch(expression->base.kind) {
3698 case EXPR_STATEMENT:
3699 return count_decls_in_stmts(expression->statement.statement);
3701 int count_left = count_decls_in_expression(expression->binary.left);
3702 int count_right = count_decls_in_expression(expression->binary.right);
3703 return count_left + count_right;
3706 return count_decls_in_expression(expression->unary.value);
3712 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
3713 * (or implement all the missing expressions here/implement a walker)
3719 static int count_decls_in_stmts(const statement_t *stmt)
3722 for (; stmt != NULL; stmt = stmt->base.next) {
3723 switch (stmt->kind) {
3724 case STATEMENT_DECLARATION: {
3725 const declaration_statement_t *const decl_stmt = &stmt->declaration;
3726 count += count_local_declarations(decl_stmt->declarations_begin,
3727 decl_stmt->declarations_end->next);
3731 case STATEMENT_COMPOUND: {
3732 const compound_statement_t *const comp =
3734 count += count_decls_in_stmts(comp->statements);
3738 case STATEMENT_IF: {
3739 const if_statement_t *const if_stmt = &stmt->ifs;
3740 count += count_decls_in_expression(if_stmt->condition);
3741 count += count_decls_in_stmts(if_stmt->true_statement);
3742 count += count_decls_in_stmts(if_stmt->false_statement);
3746 case STATEMENT_SWITCH: {
3747 const switch_statement_t *const switch_stmt = &stmt->switchs;
3748 count += count_decls_in_expression(switch_stmt->expression);
3749 count += count_decls_in_stmts(switch_stmt->body);
3753 case STATEMENT_LABEL: {
3754 const label_statement_t *const label_stmt = &stmt->label;
3755 if(label_stmt->statement != NULL) {
3756 count += count_decls_in_stmts(label_stmt->statement);
3761 case STATEMENT_WHILE: {
3762 const while_statement_t *const while_stmt = &stmt->whiles;
3763 count += count_decls_in_expression(while_stmt->condition);
3764 count += count_decls_in_stmts(while_stmt->body);
3768 case STATEMENT_DO_WHILE: {
3769 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
3770 count += count_decls_in_expression(do_while_stmt->condition);
3771 count += count_decls_in_stmts(do_while_stmt->body);
3775 case STATEMENT_FOR: {
3776 const for_statement_t *const for_stmt = &stmt->fors;
3777 count += count_local_declarations(for_stmt->scope.declarations, NULL);
3778 count += count_decls_in_expression(for_stmt->initialisation);
3779 count += count_decls_in_expression(for_stmt->condition);
3780 count += count_decls_in_expression(for_stmt->step);
3781 count += count_decls_in_stmts(for_stmt->body);
3785 case STATEMENT_CASE_LABEL: {
3786 const case_label_statement_t *label = &stmt->case_label;
3787 count += count_decls_in_expression(label->expression);
3788 if(label->statement != NULL) {
3789 count += count_decls_in_stmts(label->statement);
3795 case STATEMENT_BREAK:
3796 case STATEMENT_CONTINUE:
3799 case STATEMENT_EXPRESSION: {
3800 const expression_statement_t *expr_stmt = &stmt->expression;
3801 count += count_decls_in_expression(expr_stmt->expression);
3805 case STATEMENT_GOTO:
3806 case STATEMENT_INVALID:
3809 case STATEMENT_RETURN: {
3810 const return_statement_t *ret_stmt = &stmt->returns;
3811 count += count_decls_in_expression(ret_stmt->value);
3819 static int get_function_n_local_vars(declaration_t *declaration)
3823 /* count parameters */
3824 count += count_local_declarations(declaration->scope.declarations, NULL);
3826 /* count local variables declared in body */
3827 count += count_decls_in_stmts(declaration->init.statement);
3832 static void initialize_function_parameters(declaration_t *declaration)
3834 ir_graph *irg = current_ir_graph;
3835 ir_node *args = get_irg_args(irg);
3836 ir_node *start_block = get_irg_start_block(irg);
3837 ir_type *function_irtype = get_ir_type(declaration->type);
3840 declaration_t *parameter = declaration->scope.declarations;
3841 for( ; parameter != NULL; parameter = parameter->next, ++n) {
3842 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
3843 type_t *type = skip_typeref(parameter->type);
3845 bool needs_entity = parameter->address_taken;
3846 assert(!is_type_array(type));
3847 if(is_type_compound(type)) {
3848 needs_entity = true;
3852 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
3853 ident *id = new_id_from_str(parameter->symbol->string);
3854 set_entity_ident(entity, id);
3856 parameter->declaration_kind
3857 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
3858 parameter->v.entity = entity;
3862 ir_mode *mode = get_ir_mode(parameter->type);
3864 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
3866 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3867 parameter->v.value_number = next_value_number_function;
3868 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
3869 ++next_value_number_function;
3871 set_value(parameter->v.value_number, proj);
3876 * Handle additional decl modifiers for IR-graphs
3878 * @param irg the IR-graph
3879 * @param dec_modifiers additional modifiers
3881 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
3883 if (decl_modifiers & DM_NORETURN) {
3884 /* TRUE if the declaration includes the Microsoft
3885 __declspec(noreturn) specifier. */
3886 set_irg_additional_property(irg, mtp_property_noreturn);
3888 if (decl_modifiers & DM_NOTHROW) {
3889 /* TRUE if the declaration includes the Microsoft
3890 __declspec(nothrow) specifier. */
3891 set_irg_additional_property(irg, mtp_property_nothrow);
3893 if (decl_modifiers & DM_NAKED) {
3894 /* TRUE if the declaration includes the Microsoft
3895 __declspec(naked) specifier. */
3896 set_irg_additional_property(irg, mtp_property_naked);
3898 if (decl_modifiers & DM_FORCEINLINE) {
3899 /* TRUE if the declaration includes the
3900 Microsoft __forceinline specifier. */
3901 set_irg_inline_property(irg, irg_inline_forced);
3903 if (decl_modifiers & DM_NOINLINE) {
3904 /* TRUE if the declaration includes the Microsoft
3905 __declspec(noinline) specifier. */
3906 set_irg_inline_property(irg, irg_inline_forbidden);
3910 static void create_function(declaration_t *declaration)
3912 ir_entity *function_entity = get_function_entity(declaration);
3914 if(declaration->init.statement == NULL)
3917 current_function_decl = declaration;
3918 current_function_name = NULL;
3920 assert(imature_blocks == NULL);
3921 imature_blocks = NEW_ARR_F(ir_node*, 0);
3923 int n_local_vars = get_function_n_local_vars(declaration);
3924 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
3925 ir_node *first_block = get_cur_block();
3927 /* set inline flags */
3928 if (declaration->is_inline)
3929 set_irg_inline_property(irg, irg_inline_recomended);
3930 handle_decl_modifier_irg(irg, declaration->modifiers);
3932 next_value_number_function = 0;
3933 initialize_function_parameters(declaration);
3935 statement_to_firm(declaration->init.statement);
3937 ir_node *end_block = get_irg_end_block(irg);
3939 /* do we have a return statement yet? */
3940 if(get_cur_block() != NULL) {
3941 type_t *type = skip_typeref(declaration->type);
3942 assert(is_type_function(type));
3943 const function_type_t *func_type = &type->function;
3944 const type_t *return_type
3945 = skip_typeref(func_type->return_type);
3948 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
3949 ret = new_Return(get_store(), 0, NULL);
3952 if(is_type_scalar(return_type)) {
3953 mode = get_ir_mode(func_type->return_type);
3959 /* ยง5.1.2.2.3 main implicitly returns 0 */
3960 if (strcmp(declaration->symbol->string, "main") == 0) {
3961 in[0] = new_Const(mode, get_mode_null(mode));
3963 in[0] = new_Unknown(mode);
3965 ret = new_Return(get_store(), 1, in);
3967 add_immBlock_pred(end_block, ret);
3970 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
3971 mature_immBlock(imature_blocks[i]);
3973 DEL_ARR_F(imature_blocks);
3974 imature_blocks = NULL;
3976 mature_immBlock(first_block);
3977 mature_immBlock(end_block);
3979 irg_finalize_cons(irg);
3981 /* finalize the frame type */
3982 ir_type *frame_type = get_irg_frame_type(irg);
3983 int n = get_compound_n_members(frame_type);
3986 for(int i = 0; i < n; ++i) {
3987 ir_entity *entity = get_compound_member(frame_type, i);
3988 ir_type *entity_type = get_entity_type(entity);
3990 int align = get_type_alignment_bytes(entity_type);
3991 if(align > align_all)
3995 misalign = offset % align;
3997 offset += align - misalign;
4001 set_entity_offset(entity, offset);
4002 offset += get_type_size_bytes(entity_type);
4004 set_type_size_bytes(frame_type, offset);
4005 set_type_alignment_bytes(frame_type, align_all);
4006 set_type_state(frame_type, layout_fixed);
4011 static void create_global_variable(declaration_t *declaration)
4015 switch ((storage_class_tag_t)declaration->storage_class) {
4016 case STORAGE_CLASS_STATIC:
4017 vis = visibility_local;
4020 case STORAGE_CLASS_EXTERN:
4021 vis = visibility_external_allocated;
4024 case STORAGE_CLASS_NONE:
4025 vis = visibility_external_visible;
4028 case STORAGE_CLASS_THREAD:
4029 vis = visibility_external_visible;
4032 case STORAGE_CLASS_THREAD_EXTERN:
4033 vis = visibility_external_allocated;
4036 case STORAGE_CLASS_THREAD_STATIC:
4037 vis = visibility_local;
4041 var_type = get_tls_type();
4045 var_type = get_glob_type();
4049 create_declaration_entity(declaration,
4050 DECLARATION_KIND_GLOBAL_VARIABLE,
4052 set_entity_visibility(declaration->v.entity, vis);
4054 current_ir_graph = get_const_code_irg();
4055 create_initializer(declaration);
4058 case STORAGE_CLASS_TYPEDEF:
4059 case STORAGE_CLASS_AUTO:
4060 case STORAGE_CLASS_REGISTER:
4061 case STORAGE_CLASS_ENUM_ENTRY:
4064 panic("Invalid storage class for global variable");
4067 static void scope_to_firm(scope_t *scope)
4069 /* first pass: create declarations */
4070 declaration_t *declaration = scope->declarations;
4071 for( ; declaration != NULL; declaration = declaration->next) {
4072 if(declaration->namespc != NAMESPACE_NORMAL)
4074 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4075 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4077 if(declaration->symbol == NULL)
4080 type_t *type = skip_typeref(declaration->type);
4081 if(is_type_function(type)) {
4082 get_function_entity(declaration);
4084 create_global_variable(declaration);
4088 /* second pass: create code */
4089 declaration = scope->declarations;
4090 for( ; declaration != NULL; declaration = declaration->next) {
4091 if(declaration->namespc != NAMESPACE_NORMAL)
4093 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4094 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4096 if(declaration->symbol == NULL)
4099 type_t *type = declaration->type;
4100 if(type->kind != TYPE_FUNCTION)
4103 create_function(declaration);
4107 void init_ast2firm(void)
4109 obstack_init(&asm_obst);
4110 init_atomic_modes();
4112 /* create idents for all known runtime functions */
4113 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
4114 predef_idents[rts_data[i].id] = new_id_from_str(rts_data[i].name);
4118 void exit_ast2firm(void)
4120 obstack_free(&asm_obst, NULL);
4123 void translation_unit_to_firm(translation_unit_t *unit)
4125 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
4126 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
4127 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
4129 ir_type_int = get_ir_type(type_int);
4130 ir_type_const_char = get_ir_type(type_const_char);
4131 ir_type_wchar_t = get_ir_type(type_wchar_t);
4132 ir_type_void = get_ir_type(type_int); /* we don't have a real void
4135 type_void->base.firm_type = ir_type_void;
4137 /* just to be sure */
4138 continue_label = NULL;
4140 current_switch_cond = NULL;
4142 scope_to_firm(&unit->scope);