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->expression.source_position);
936 ir_mode *mode = get_ir_mode(cnst->expression.datatype);
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->expression.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->expression.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) || is_Array_type(irtype)) {
1052 ir_mode *const mode = get_type_mode(irtype);
1053 ir_node *const memory = get_store();
1054 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1055 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1056 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1057 set_store(load_mem);
1061 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1063 ir_mode *mode = get_irn_mode(node);
1065 if(!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1067 if(!mode_is_float(mode))
1070 /* check if there is already a Conv */
1071 if (get_irn_op(node) == op_Conv) {
1072 /* convert it into a strict Conv */
1073 set_Conv_strict(node, 1);
1077 /* otherwise create a new one */
1078 return new_d_strictConv(dbgi, node, mode);
1081 static ir_node *get_global_var_address(dbg_info *const dbgi,
1082 const declaration_t *const decl)
1084 assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1086 ir_entity *const entity = decl->v.entity;
1087 switch ((storage_class_tag_t)decl->storage_class) {
1088 case STORAGE_CLASS_THREAD:
1089 case STORAGE_CLASS_THREAD_EXTERN:
1090 case STORAGE_CLASS_THREAD_STATIC: {
1091 ir_node *const no_mem = new_NoMem();
1092 ir_node *const tls = get_irg_tls(current_ir_graph);
1093 return new_d_simpleSel(dbgi, no_mem, tls, entity);
1097 return create_symconst(dbgi, mode_P_data, entity);
1101 /* Returns the correct base address depending on whether it is a parameter or a
1102 * normal local variable */
1103 static ir_node *get_local_frame(ir_entity *const ent)
1105 ir_graph *const irg = current_ir_graph;
1106 const ir_type *const owner = get_entity_owner(ent);
1107 if (owner == get_irg_frame_type(irg)) {
1108 return get_irg_frame(irg);
1110 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1111 return get_irg_value_param_base(irg);
1115 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1117 dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
1118 declaration_t *declaration = ref->declaration;
1119 type_t *type = skip_typeref(declaration->type);
1121 switch((declaration_kind_t) declaration->declaration_kind) {
1122 case DECLARATION_KIND_UNKNOWN:
1123 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) {
1129 case DECLARATION_KIND_ENUM_ENTRY: {
1130 ir_mode *const mode = get_ir_mode(type);
1131 return new_Const(mode, declaration->v.enum_val);
1134 case DECLARATION_KIND_LOCAL_VARIABLE: {
1135 ir_mode *const mode = get_ir_mode(type);
1136 return get_value(declaration->v.value_number, mode);
1138 case DECLARATION_KIND_FUNCTION: {
1139 ir_mode *const mode = get_ir_mode(type);
1140 return create_symconst(dbgi, mode, declaration->v.entity);
1142 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1143 ir_node *const addr = get_global_var_address(dbgi, declaration);
1144 ir_type *const irtype = get_entity_type(declaration->v.entity);
1145 return deref_address(irtype, addr, dbgi);
1148 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1149 ir_entity *entity = declaration->v.entity;
1150 ir_node *frame = get_local_frame(entity);
1151 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1152 ir_type *irtype = get_entity_type(entity);
1153 return deref_address(irtype, sel, dbgi);
1156 case DECLARATION_KIND_COMPOUND_MEMBER:
1157 case DECLARATION_KIND_LABEL_BLOCK:
1158 panic("not implemented reference type");
1161 panic("reference to declaration with unknown type found");
1164 static ir_node *reference_addr(const reference_expression_t *ref)
1166 dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
1167 declaration_t *declaration = ref->declaration;
1169 switch((declaration_kind_t) declaration->declaration_kind) {
1170 case DECLARATION_KIND_UNKNOWN:
1172 case DECLARATION_KIND_LOCAL_VARIABLE:
1173 panic("local variable without entity has no address");
1174 case DECLARATION_KIND_FUNCTION: {
1175 type_t *const type = skip_typeref(ref->expression.datatype);
1176 ir_mode *const mode = get_ir_mode(type);
1177 return create_symconst(dbgi, mode, declaration->v.entity);
1179 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1180 ir_node *const addr = get_global_var_address(dbgi, declaration);
1183 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1184 ir_entity *entity = declaration->v.entity;
1185 ir_node *frame = get_local_frame(entity);
1186 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1191 case DECLARATION_KIND_ENUM_ENTRY:
1192 panic("trying to reference enum entry");
1194 case DECLARATION_KIND_COMPOUND_MEMBER:
1195 case DECLARATION_KIND_LABEL_BLOCK:
1196 panic("not implemented reference type");
1199 panic("reference to declaration with unknown type found");
1202 static ir_node *process_builtin_call(const call_expression_t *call)
1204 dbg_info *dbgi = get_dbg_info(&call->expression.source_position);
1206 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1207 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1209 type_t *type = skip_typeref(builtin->expression.datatype);
1210 assert(is_type_pointer(type));
1212 type_t *function_type = skip_typeref(type->pointer.points_to);
1213 symbol_t *symbol = builtin->symbol;
1215 switch(symbol->ID) {
1216 case T___builtin_alloca: {
1217 if(call->arguments == NULL || call->arguments->next != NULL) {
1218 panic("invalid number of parameters on __builtin_alloca");
1220 expression_t *argument = call->arguments->expression;
1221 ir_node *size = expression_to_firm(argument);
1223 ir_node *store = get_store();
1224 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1226 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1228 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1232 case T___builtin_nan:
1233 case T___builtin_nanf:
1234 case T___builtin_nand: {
1235 /* Ignore string for now... */
1236 assert(is_type_function(function_type));
1237 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1238 tarval *tv = get_mode_NAN(mode);
1239 ir_node *res = new_d_Const(dbgi, mode, tv);
1242 case T___builtin_va_end:
1245 panic("Unsupported builtin found\n");
1249 static ir_node *call_expression_to_firm(const call_expression_t *call)
1251 assert(get_cur_block() != NULL);
1253 expression_t *function = call->function;
1254 if(function->kind == EXPR_BUILTIN_SYMBOL) {
1255 return process_builtin_call(call);
1257 ir_node *callee = expression_to_firm(function);
1259 type_t *type = skip_typeref(function->base.datatype);
1260 assert(is_type_pointer(type));
1261 pointer_type_t *pointer_type = &type->pointer;
1262 type_t *points_to = skip_typeref(pointer_type->points_to);
1263 assert(is_type_function(points_to));
1264 function_type_t *function_type = &points_to->function;
1266 int n_parameters = 0;
1267 call_argument_t *argument = call->arguments;
1268 for( ; argument != NULL; argument = argument->next) {
1272 dbg_info *dbgi = get_dbg_info(&call->expression.source_position);
1274 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1275 ir_type *new_method_type = NULL;
1276 if(function_type->variadic || function_type->unspecified_parameters) {
1277 /* we need to construct a new method type matching the call
1279 int n_res = get_method_n_ress(ir_method_type);
1280 new_method_type = new_type_method(unique_ident("calltype"),
1281 n_parameters, n_res);
1282 set_method_calling_convention(new_method_type,
1283 get_method_calling_convention(ir_method_type));
1284 set_method_additional_properties(new_method_type,
1285 get_method_additional_properties(ir_method_type));
1287 for(int i = 0; i < n_res; ++i) {
1288 set_method_res_type(new_method_type, i,
1289 get_method_res_type(ir_method_type, i));
1292 ir_node *in[n_parameters];
1294 argument = call->arguments;
1296 for( ; argument != NULL; argument = argument->next) {
1297 expression_t *expression = argument->expression;
1298 ir_node *arg_node = expression_to_firm(expression);
1300 arg_node = do_strict_conv(dbgi, arg_node);
1303 if(new_method_type != NULL) {
1304 ir_type *irtype = get_ir_type(expression->base.datatype);
1305 set_method_param_type(new_method_type, n, irtype);
1310 assert(n == n_parameters);
1312 if(new_method_type != NULL)
1313 ir_method_type = new_method_type;
1315 ir_node *store = get_store();
1316 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1318 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1321 type_t *return_type = skip_typeref(function_type->return_type);
1322 ir_node *result = NULL;
1324 if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1326 if(is_type_scalar(return_type)) {
1327 mode = get_ir_mode(return_type);
1331 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1332 result = new_d_Proj(dbgi, resproj, mode, 0);
1338 static void statement_to_firm(statement_t *statement);
1339 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1341 static ir_node *expression_to_addr(const expression_t *expression);
1342 static void create_condition_evaluation(const expression_t *expression,
1343 ir_node *true_block,
1344 ir_node *false_block);
1346 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1349 value = do_strict_conv(dbgi, value);
1351 ir_node *memory = get_store();
1353 if(is_type_scalar(type)) {
1354 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1355 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1356 set_store(store_mem);
1358 ir_type *irtype = get_ir_type(type);
1359 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1360 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1361 set_store(copyb_mem);
1365 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1367 tarval *all_one = get_mode_all_one(mode);
1368 int mode_size = get_mode_size_bits(mode);
1370 assert(offset >= 0 && size >= 0);
1371 assert(offset + size <= mode_size);
1372 if(size == mode_size) {
1376 long shiftr = get_mode_size_bits(mode) - size;
1377 long shiftl = offset;
1378 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1379 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1380 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1381 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1386 static void bitfield_store_to_firm(const unary_expression_t *expression,
1389 expression_t *select = expression->value;
1390 assert(select->kind == EXPR_SELECT);
1391 type_t *type = select->base.datatype;
1392 assert(type->kind == TYPE_BITFIELD);
1393 ir_mode *mode = get_ir_mode(type->bitfield.base);
1394 ir_node *addr = expression_to_addr(select);
1396 assert(get_irn_mode(value) == mode);
1398 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1400 /* kill upper bits of value and shift to right position */
1401 ir_entity *entity = select->select.compound_entry->v.entity;
1402 int bitoffset = get_entity_offset_bits_remainder(entity);
1403 ir_type *entity_type = get_entity_type(entity);
1404 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1406 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1407 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1408 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1409 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1410 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1411 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1413 /* load current value */
1414 ir_node *mem = get_store();
1415 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1416 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1417 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1418 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1419 tarval *inv_mask = tarval_not(shift_mask);
1420 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1421 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1423 /* construct new value and store */
1424 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1425 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1426 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1427 set_store(store_mem);
1430 static void set_value_for_expression(const expression_t *expression,
1433 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1434 value = do_strict_conv(dbgi, value);
1436 if(expression->kind == EXPR_REFERENCE) {
1437 const reference_expression_t *ref = &expression->reference;
1439 declaration_t *declaration = ref->declaration;
1440 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1441 if(declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1442 set_value(declaration->v.value_number, value);
1447 if(expression->kind == EXPR_UNARY_BITFIELD_EXTRACT) {
1448 bitfield_store_to_firm(&expression->unary, value);
1452 ir_node *addr = expression_to_addr(expression);
1453 type_t *type = skip_typeref(expression->base.datatype);
1454 assign_value(dbgi, addr, type, value);
1457 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1459 ir_mode *value_mode = get_irn_mode(value);
1461 if (value_mode == dest_mode || is_Bad(value))
1464 if(dest_mode == mode_b) {
1465 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1466 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1467 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1471 return new_d_Conv(dbgi, value, dest_mode);
1474 static ir_node *create_incdec(const unary_expression_t *expression)
1476 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1477 type_t *type = skip_typeref(expression->expression.datatype);
1478 ir_mode *mode = get_ir_mode(type);
1479 expression_t *value = expression->value;
1481 ir_node *value_node = expression_to_firm(value);
1484 if(is_type_pointer(type)) {
1485 pointer_type_t *pointer_type = &type->pointer;
1486 unsigned elem_size = get_type_size(pointer_type->points_to);
1487 offset = new_Const_long(mode_int, elem_size);
1489 assert(is_type_arithmetic(type));
1490 offset = new_Const(mode, get_mode_one(mode));
1493 switch(expression->expression.kind) {
1494 case EXPR_UNARY_POSTFIX_INCREMENT: {
1495 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1496 set_value_for_expression(value, new_value);
1499 case EXPR_UNARY_POSTFIX_DECREMENT: {
1500 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1501 set_value_for_expression(value, new_value);
1504 case EXPR_UNARY_PREFIX_INCREMENT: {
1505 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1506 set_value_for_expression(value, new_value);
1509 case EXPR_UNARY_PREFIX_DECREMENT: {
1510 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1511 set_value_for_expression(value, new_value);
1515 panic("no incdec expr in create_incdec");
1520 static bool is_local_variable(expression_t *expression)
1522 if (expression->kind != EXPR_REFERENCE)
1524 reference_expression_t *ref_expr = &expression->reference;
1525 declaration_t *declaration = ref_expr->declaration;
1526 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
1529 static pn_Cmp get_pnc(const expression_kind_t kind)
1532 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1533 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1534 case EXPR_BINARY_NOTEQUAL: return pn_Cmp_Ne;
1535 case EXPR_BINARY_ISLESS:
1536 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
1537 case EXPR_BINARY_ISLESSEQUAL:
1538 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
1539 case EXPR_BINARY_ISGREATER:
1540 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
1541 case EXPR_BINARY_ISGREATEREQUAL:
1542 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
1543 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
1548 panic("trying to get pn_Cmp from non-comparison binexpr type");
1552 * Handle the assume optimizer hint: check if a Confirm
1553 * node can be created.
1555 * @param dbi debug info
1556 * @param expr the IL assume expression
1558 * we support here only some simple cases:
1563 static ir_node *handle_assume_compare(dbg_info *dbi,
1564 const binary_expression_t *expression)
1566 expression_t *op1 = expression->left;
1567 expression_t *op2 = expression->right;
1568 declaration_t *var2, *var = NULL;
1569 ir_node *res = NULL;
1572 cmp_val = get_pnc(expression->expression.kind);
1574 if (is_local_variable(op1) && is_local_variable(op2)) {
1575 var = op1->reference.declaration;
1576 var2 = op2->reference.declaration;
1578 type_t *const type = skip_typeref(var->type);
1579 ir_mode *const mode = get_ir_mode(type);
1581 ir_node *const irn1 = get_value(var->v.value_number, mode);
1582 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1584 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1585 set_value(var2->v.value_number, res);
1587 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
1588 set_value(var->v.value_number, res);
1594 if (is_local_variable(op1) && is_constant_expression(op2)) {
1595 var = op1->reference.declaration;
1597 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
1598 cmp_val = get_inversed_pnc(cmp_val);
1599 var = op2->reference.declaration;
1604 type_t *const type = skip_typeref(var->type);
1605 ir_mode *const mode = get_ir_mode(type);
1607 res = get_value(var->v.value_number, mode);
1608 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
1609 set_value(var->v.value_number, res);
1615 * Handle the assume optimizer hint.
1617 * @param dbi debug info
1618 * @param expr the IL assume expression
1620 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
1621 switch(expression->kind) {
1622 case EXPR_BINARY_EQUAL:
1623 case EXPR_BINARY_NOTEQUAL:
1624 case EXPR_BINARY_LESS:
1625 case EXPR_BINARY_LESSEQUAL:
1626 case EXPR_BINARY_GREATER:
1627 case EXPR_BINARY_GREATEREQUAL:
1628 return handle_assume_compare(dbi, &expression->binary);
1634 static ir_node *bitfield_extract_to_firm(const unary_expression_t *expression)
1636 expression_t *select = expression->value;
1637 assert(select->kind == EXPR_SELECT);
1639 type_t *type = select->base.datatype;
1640 assert(type->kind == TYPE_BITFIELD);
1641 ir_mode *mode = get_ir_mode(type->bitfield.base);
1642 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1643 ir_node *addr = expression_to_addr(select);
1644 ir_node *mem = get_store();
1645 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1646 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1647 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1649 load_res = create_conv(dbgi, load_res, mode_int);
1651 set_store(load_mem);
1653 /* kill upper bits */
1654 ir_entity *entity = select->select.compound_entry->v.entity;
1655 int bitoffset = get_entity_offset_bits_remainder(entity);
1656 ir_type *entity_type = get_entity_type(entity);
1657 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1658 long shift_bitsl = machine_size - bitoffset - bitsize;
1659 assert(shift_bitsl >= 0);
1660 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1661 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1662 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1664 long shift_bitsr = bitoffset + shift_bitsl;
1665 assert(shift_bitsr <= (long) machine_size);
1666 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1667 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1669 if(mode_is_signed(mode)) {
1670 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1672 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1675 return create_conv(dbgi, shiftr, mode);
1678 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
1680 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1681 type_t *type = skip_typeref(expression->expression.datatype);
1683 if(expression->expression.kind == EXPR_UNARY_TAKE_ADDRESS)
1684 return expression_to_addr(expression->value);
1686 const expression_t *value = expression->value;
1688 switch(expression->expression.kind) {
1689 case EXPR_UNARY_NEGATE: {
1690 ir_node *value_node = expression_to_firm(value);
1691 ir_mode *mode = get_ir_mode(type);
1692 return new_d_Minus(dbgi, value_node, mode);
1694 case EXPR_UNARY_PLUS:
1695 return expression_to_firm(value);
1696 case EXPR_UNARY_BITWISE_NEGATE: {
1697 ir_node *value_node = expression_to_firm(value);
1698 ir_mode *mode = get_ir_mode(type);
1699 return new_d_Not(dbgi, value_node, mode);
1701 case EXPR_UNARY_NOT: {
1702 ir_node *value_node = expression_to_firm(value);
1703 ir_mode *mode = get_ir_mode(type);
1704 if(get_irn_mode(value_node) != mode_b) {
1705 value_node = create_conv(dbgi, value_node, mode_b);
1707 value_node = new_d_Not(dbgi, value_node, mode_b);
1708 if(mode != mode_b) {
1709 value_node = create_conv(dbgi, value_node, mode);
1713 case EXPR_UNARY_DEREFERENCE: {
1714 ir_node *value_node = expression_to_firm(value);
1715 type_t *value_type = skip_typeref(value->base.datatype);
1716 ir_type *irtype = get_ir_type(value_type);
1717 assert(is_Pointer_type(irtype));
1718 ir_type *points_to = get_pointer_points_to_type(irtype);
1719 return deref_address(points_to, value_node, dbgi);
1721 case EXPR_UNARY_POSTFIX_INCREMENT:
1722 case EXPR_UNARY_POSTFIX_DECREMENT:
1723 case EXPR_UNARY_PREFIX_INCREMENT:
1724 case EXPR_UNARY_PREFIX_DECREMENT:
1725 return create_incdec(expression);
1726 case EXPR_UNARY_CAST: {
1727 ir_node *value_node = expression_to_firm(value);
1728 ir_mode *mode = get_ir_mode(type);
1729 ir_node *node = create_conv(dbgi, value_node, mode);
1730 node = do_strict_conv(dbgi, node);
1733 case EXPR_UNARY_CAST_IMPLICIT: {
1734 ir_node *value_node = expression_to_firm(value);
1735 ir_mode *mode = get_ir_mode(type);
1736 return create_conv(dbgi, value_node, mode);
1738 case EXPR_UNARY_ASSUME:
1739 if(firm_opt.confirm)
1740 return handle_assume(dbgi, value);
1743 case EXPR_UNARY_BITFIELD_EXTRACT:
1744 return bitfield_extract_to_firm(expression);
1749 panic("invalid UNEXPR type found");
1752 static ir_node *create_lazy_op(const binary_expression_t *expression)
1754 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1755 type_t *type = expression->expression.datatype;
1756 ir_mode *mode = get_ir_mode(type);
1758 if(is_constant_expression(expression->left)) {
1759 long val = fold_constant(expression->left);
1760 expression_kind_t ekind = expression->expression.kind;
1761 if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
1762 || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
1763 return expression_to_firm(expression->right);
1765 assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
1766 || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
1767 return new_Const(mode, get_mode_one(mode));
1771 ir_node *cur_block = get_cur_block();
1773 ir_node *one_block = new_immBlock();
1774 ir_node *one = new_Const(mode, get_mode_one(mode));
1775 ir_node *jmp_one = new_d_Jmp(dbgi);
1777 ir_node *zero_block = new_immBlock();
1778 ir_node *zero = new_Const(mode, get_mode_null(mode));
1779 ir_node *jmp_zero = new_d_Jmp(dbgi);
1781 set_cur_block(cur_block);
1782 create_condition_evaluation((const expression_t*) expression,
1783 one_block, zero_block);
1784 mature_immBlock(one_block);
1785 mature_immBlock(zero_block);
1787 ir_node *common_block = new_immBlock();
1788 add_immBlock_pred(common_block, jmp_one);
1789 add_immBlock_pred(common_block, jmp_zero);
1790 mature_immBlock(common_block);
1792 ir_node *in[2] = { one, zero };
1793 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1798 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
1799 ir_node *right, ir_mode *mode);
1801 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
1802 create_arithmetic_func func)
1804 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1805 ir_node *left = expression_to_firm(expression->left);
1806 ir_node *right = expression_to_firm(expression->right);
1807 type_t *type = expression->right->base.datatype;
1808 /* be careful with the modes, because in arithmetic assign nodes only
1809 * the right operand has the mode of the arithmetic already */
1810 ir_mode *mode = get_ir_mode(type);
1811 left = create_conv(dbgi, left, mode);
1812 ir_node *res = func(dbgi, left, right, mode);
1817 static ir_node *pointer_arithmetic(ir_node *const pointer,
1820 dbg_info *const dbgi,
1821 const create_arithmetic_func func)
1823 pointer_type_t *const pointer_type = &type->pointer;
1824 type_t *const points_to = pointer_type->points_to;
1825 const unsigned elem_size = get_type_size(points_to);
1827 assert(elem_size >= 1);
1828 if (elem_size > 1) {
1829 integer = create_conv(dbgi, integer, mode_int);
1830 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
1831 ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_int);
1835 ir_mode *const mode = get_ir_mode(type);
1836 return func(dbgi, pointer, integer, mode);
1839 static ir_node *create_arithmetic_assign_binop(
1840 const binary_expression_t *expression, create_arithmetic_func func)
1842 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1843 type_t *const type = skip_typeref(expression->expression.datatype);
1846 if (is_type_pointer(type)) {
1847 ir_node *const pointer = expression_to_firm(expression->left);
1848 ir_node * integer = expression_to_firm(expression->right);
1849 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
1851 value = create_arithmetic_binop(expression, func);
1854 ir_mode *const mode = get_ir_mode(type);
1855 value = create_conv(dbgi, value, mode);
1856 set_value_for_expression(expression->left, value);
1861 static ir_node *create_add(const binary_expression_t *expression)
1863 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1864 ir_node *left = expression_to_firm(expression->left);
1865 ir_node *right = expression_to_firm(expression->right);
1866 type_t *type = expression->expression.datatype;
1868 expression_t *expr_left = expression->left;
1869 expression_t *expr_right = expression->right;
1870 type_t *type_left = skip_typeref(expr_left->base.datatype);
1871 type_t *type_right = skip_typeref(expr_right->base.datatype);
1873 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1874 ir_mode *const mode = get_ir_mode(type);
1875 return new_d_Add(dbgi, left, right, mode);
1878 if (is_type_pointer(type_left)) {
1879 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
1881 assert(is_type_pointer(type_right));
1882 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
1886 static ir_node *create_sub(const binary_expression_t *expression)
1888 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1889 expression_t *const expr_left = expression->left;
1890 expression_t *const expr_right = expression->right;
1891 ir_node *const left = expression_to_firm(expr_left);
1892 ir_node *const right = expression_to_firm(expr_right);
1893 type_t *const type = expression->expression.datatype;
1894 type_t *const type_left = skip_typeref(expr_left->base.datatype);
1895 type_t *const type_right = skip_typeref(expr_right->base.datatype);
1897 if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1898 ir_mode *const mode = get_ir_mode(type);
1899 return new_d_Sub(dbgi, left, right, mode);
1900 } else if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
1901 const pointer_type_t *const ptr_type = &type_left->pointer;
1902 const unsigned elem_size = get_type_size(ptr_type->points_to);
1903 ir_mode *const mode = get_ir_mode(type);
1904 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
1905 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
1906 ir_node *const no_mem = new_NoMem();
1907 ir_node *const div = new_d_Div(dbgi, no_mem, sub, cnst, mode,
1908 op_pin_state_floats);
1909 return new_d_Proj(dbgi, div, mode, pn_Div_res);
1912 assert(is_type_pointer(type_left));
1913 return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
1916 static ir_node *create_shift(const binary_expression_t *expression)
1918 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1919 ir_node *left = expression_to_firm(expression->left);
1920 ir_node *right = expression_to_firm(expression->right);
1921 type_t *type = expression->expression.datatype;
1922 ir_mode *mode = get_ir_mode(type);
1924 /* firm always wants the shift count to be unsigned */
1925 right = create_conv(dbgi, right, mode_uint);
1929 switch(expression->expression.kind) {
1930 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
1931 case EXPR_BINARY_SHIFTLEFT:
1932 res = new_d_Shl(dbgi, left, right, mode);
1934 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
1935 case EXPR_BINARY_SHIFTRIGHT: {
1936 expression_t *expr_left = expression->left;
1937 type_t *type_left = skip_typeref(expr_left->base.datatype);
1939 if(is_type_signed(type_left)) {
1940 res = new_d_Shrs(dbgi, left, right, mode);
1942 res = new_d_Shr(dbgi, left, right, mode);
1947 panic("create shift op called for non-shift op");
1954 static ir_node *create_divmod(const binary_expression_t *expression)
1956 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1957 ir_node *left = expression_to_firm(expression->left);
1958 ir_node *right = expression_to_firm(expression->right);
1959 ir_node *pin = new_Pin(new_NoMem());
1960 /* be careful with the modes, because in arithmetic assign nodes only
1961 * the right operand has the mode of the arithmetic already */
1962 type_t *type = expression->right->base.datatype;
1963 ir_mode *mode = get_ir_mode(type);
1964 left = create_conv(dbgi, left, mode);
1968 switch (expression->expression.kind) {
1969 case EXPR_BINARY_DIV:
1970 case EXPR_BINARY_DIV_ASSIGN:
1971 if(mode_is_float(mode)) {
1972 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
1973 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
1975 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
1976 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
1980 case EXPR_BINARY_MOD:
1981 case EXPR_BINARY_MOD_ASSIGN:
1982 assert(!mode_is_float(mode));
1983 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
1984 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
1987 default: panic("unexpected binary expression type in create_divmod()");
1993 static ir_node *create_arithmetic_assign_divmod(
1994 const binary_expression_t *expression)
1996 ir_node * value = create_divmod(expression);
1997 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1998 type_t *const type = expression->expression.datatype;
1999 ir_mode *const mode = get_ir_mode(type);
2001 assert(type->kind != TYPE_POINTER);
2003 value = create_conv(dbgi, value, mode);
2004 set_value_for_expression(expression->left, value);
2009 static ir_node *create_arithmetic_assign_shift(
2010 const binary_expression_t *expression)
2012 ir_node * value = create_shift(expression);
2013 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
2014 type_t *const type = expression->expression.datatype;
2015 ir_mode *const mode = get_ir_mode(type);
2017 value = create_conv(dbgi, value, mode);
2018 set_value_for_expression(expression->left, value);
2023 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2025 expression_kind_t kind = expression->expression.kind;
2028 case EXPR_BINARY_EQUAL:
2029 case EXPR_BINARY_NOTEQUAL:
2030 case EXPR_BINARY_LESS:
2031 case EXPR_BINARY_LESSEQUAL:
2032 case EXPR_BINARY_GREATER:
2033 case EXPR_BINARY_GREATEREQUAL:
2034 case EXPR_BINARY_ISGREATER:
2035 case EXPR_BINARY_ISGREATEREQUAL:
2036 case EXPR_BINARY_ISLESS:
2037 case EXPR_BINARY_ISLESSEQUAL:
2038 case EXPR_BINARY_ISLESSGREATER:
2039 case EXPR_BINARY_ISUNORDERED: {
2040 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
2041 ir_node *left = expression_to_firm(expression->left);
2042 ir_node *right = expression_to_firm(expression->right);
2043 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2044 long pnc = get_pnc(kind);
2045 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2048 case EXPR_BINARY_ASSIGN: {
2049 ir_node *right = expression_to_firm(expression->right);
2050 set_value_for_expression(expression->left, right);
2054 case EXPR_BINARY_ADD:
2055 return create_add(expression);
2056 case EXPR_BINARY_SUB:
2057 return create_sub(expression);
2058 case EXPR_BINARY_MUL:
2059 return create_arithmetic_binop(expression, new_d_Mul);
2060 case EXPR_BINARY_BITWISE_AND:
2061 return create_arithmetic_binop(expression, new_d_And);
2062 case EXPR_BINARY_BITWISE_OR:
2063 return create_arithmetic_binop(expression, new_d_Or);
2064 case EXPR_BINARY_BITWISE_XOR:
2065 return create_arithmetic_binop(expression, new_d_Eor);
2066 case EXPR_BINARY_SHIFTLEFT:
2067 case EXPR_BINARY_SHIFTRIGHT:
2068 return create_shift(expression);
2069 case EXPR_BINARY_DIV:
2070 case EXPR_BINARY_MOD:
2071 return create_divmod(expression);
2072 case EXPR_BINARY_LOGICAL_AND:
2073 case EXPR_BINARY_LOGICAL_OR:
2074 return create_lazy_op(expression);
2075 case EXPR_BINARY_COMMA:
2076 expression_to_firm(expression->left);
2077 return expression_to_firm(expression->right);
2078 case EXPR_BINARY_ADD_ASSIGN:
2079 return create_arithmetic_assign_binop(expression, new_d_Add);
2080 case EXPR_BINARY_SUB_ASSIGN:
2081 return create_arithmetic_assign_binop(expression, new_d_Sub);
2082 case EXPR_BINARY_MUL_ASSIGN:
2083 return create_arithmetic_assign_binop(expression, new_d_Mul);
2084 case EXPR_BINARY_DIV_ASSIGN:
2085 return create_arithmetic_assign_divmod(expression);
2086 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2087 return create_arithmetic_assign_binop(expression, new_d_And);
2088 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2089 return create_arithmetic_assign_binop(expression, new_d_Or);
2090 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2091 return create_arithmetic_assign_binop(expression, new_d_Eor);
2092 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2093 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2094 return create_arithmetic_assign_shift(expression);
2095 case EXPR_BINARY_BUILTIN_EXPECT:
2096 return expression_to_firm(expression->left);
2098 panic("TODO binexpr type");
2102 static ir_node *array_access_addr(const array_access_expression_t *expression)
2104 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
2105 ir_node *base_addr = expression_to_firm(expression->array_ref);
2106 ir_node *offset = expression_to_firm(expression->index);
2107 offset = create_conv(dbgi, offset, mode_uint);
2109 type_t *ref_type = skip_typeref(expression->array_ref->base.datatype);
2110 assert(is_type_pointer(ref_type));
2111 pointer_type_t *pointer_type = &ref_type->pointer;
2113 unsigned elem_size = get_type_size(pointer_type->points_to);
2114 ir_node *elem_size_const = new_Const_long(mode_uint, elem_size);
2115 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2117 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2122 static ir_node *array_access_to_firm(
2123 const array_access_expression_t *expression)
2125 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
2126 ir_node *addr = array_access_addr(expression);
2127 type_t *type = revert_automatic_type_conversion(
2128 (const expression_t*) expression);
2129 type = skip_typeref(type);
2130 ir_type *irtype = get_ir_type(type);
2132 return deref_address(irtype, addr, dbgi);
2136 * Transform a sizeof expression into Firm code.
2138 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2140 type_t *type = expression->type;
2142 type = expression->tp_expression->base.datatype;
2143 assert(type != NULL);
2146 ir_mode *const mode = get_ir_mode(expression->expression.datatype);
2147 symconst_symbol sym;
2148 sym.type_p = get_ir_type(type);
2149 return new_SymConst(mode, sym, symconst_type_size);
2153 * Transform an alignof expression into Firm code.
2155 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2157 type_t *type = expression->type;
2159 type = expression->tp_expression->base.datatype;
2160 assert(type != NULL);
2163 ir_mode *const mode = get_ir_mode(expression->expression.datatype);
2164 symconst_symbol sym;
2165 sym.type_p = get_ir_type(type);
2166 return new_SymConst(mode, sym, symconst_type_align);
2169 static long fold_constant(const expression_t *expression)
2171 assert(is_constant_expression(expression));
2173 ir_graph *old_current_ir_graph = current_ir_graph;
2174 if(current_ir_graph == NULL) {
2175 current_ir_graph = get_const_code_irg();
2178 ir_node *cnst = expression_to_firm(expression);
2179 current_ir_graph = old_current_ir_graph;
2181 if(!is_Const(cnst)) {
2182 panic("couldn't fold constant\n");
2185 tarval *tv = get_Const_tarval(cnst);
2186 if(!tarval_is_long(tv)) {
2187 panic("result of constant folding is not integer\n");
2190 return get_tarval_long(tv);
2193 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2195 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
2197 /* first try to fold a constant condition */
2198 if(is_constant_expression(expression->condition)) {
2199 long val = fold_constant(expression->condition);
2201 return expression_to_firm(expression->true_expression);
2203 return expression_to_firm(expression->false_expression);
2207 ir_node *cur_block = get_cur_block();
2209 /* create the true block */
2210 ir_node *true_block = new_immBlock();
2212 ir_node *true_val = expression_to_firm(expression->true_expression);
2213 ir_node *true_jmp = new_Jmp();
2215 /* create the false block */
2216 ir_node *false_block = new_immBlock();
2218 ir_node *false_val = expression_to_firm(expression->false_expression);
2219 ir_node *false_jmp = new_Jmp();
2221 /* create the condition evaluation */
2222 set_cur_block(cur_block);
2223 create_condition_evaluation(expression->condition, true_block, false_block);
2224 mature_immBlock(true_block);
2225 mature_immBlock(false_block);
2227 /* create the common block */
2228 ir_node *common_block = new_immBlock();
2229 add_immBlock_pred(common_block, true_jmp);
2230 add_immBlock_pred(common_block, false_jmp);
2231 mature_immBlock(common_block);
2233 /* TODO improve static semantics, so either both or no values are NULL */
2234 if (true_val == NULL || false_val == NULL)
2237 ir_node *in[2] = { true_val, false_val };
2238 ir_mode *mode = get_irn_mode(true_val);
2239 assert(get_irn_mode(false_val) == mode);
2240 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2245 static ir_node *select_addr(const select_expression_t *expression)
2247 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
2249 ir_node *compound_addr = expression_to_firm(expression->compound);
2251 declaration_t *entry = expression->compound_entry;
2252 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2253 ir_entity *entity = entry->v.entity;
2255 assert(entity != NULL);
2257 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2262 static ir_node *select_to_firm(const select_expression_t *expression)
2264 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
2265 ir_node *addr = select_addr(expression);
2266 type_t *type = revert_automatic_type_conversion(
2267 (const expression_t*) expression);
2268 type = skip_typeref(type);
2269 ir_type *irtype = get_ir_type(type);
2271 return deref_address(irtype, addr, dbgi);
2274 /* Values returned by __builtin_classify_type. */
2275 typedef enum gcc_type_class
2281 enumeral_type_class,
2284 reference_type_class,
2288 function_type_class,
2299 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2301 const type_t *const type = expr->type_expression->base.datatype;
2307 const atomic_type_t *const atomic_type = &type->atomic;
2308 switch (atomic_type->akind) {
2309 /* should not be reached */
2310 case ATOMIC_TYPE_INVALID:
2314 /* gcc cannot do that */
2315 case ATOMIC_TYPE_VOID:
2316 tc = void_type_class;
2319 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2320 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2321 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2322 case ATOMIC_TYPE_SHORT:
2323 case ATOMIC_TYPE_USHORT:
2324 case ATOMIC_TYPE_INT:
2325 case ATOMIC_TYPE_UINT:
2326 case ATOMIC_TYPE_LONG:
2327 case ATOMIC_TYPE_ULONG:
2328 case ATOMIC_TYPE_LONGLONG:
2329 case ATOMIC_TYPE_ULONGLONG:
2330 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2331 tc = integer_type_class;
2334 case ATOMIC_TYPE_FLOAT:
2335 case ATOMIC_TYPE_DOUBLE:
2336 case ATOMIC_TYPE_LONG_DOUBLE:
2337 tc = real_type_class;
2340 #ifdef PROVIDE_COMPLEX
2341 case ATOMIC_TYPE_FLOAT_COMPLEX:
2342 case ATOMIC_TYPE_DOUBLE_COMPLEX:
2343 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
2344 tc = complex_type_class;
2346 case ATOMIC_TYPE_FLOAT_IMAGINARY:
2347 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
2348 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
2349 tc = complex_type_class;
2354 panic("Unimplemented case in classify_type_to_firm().");
2359 case TYPE_ARRAY: /* gcc handles this as pointer */
2360 case TYPE_FUNCTION: /* gcc handles this as pointer */
2361 case TYPE_POINTER: tc = pointer_type_class; break;
2362 case TYPE_COMPOUND_STRUCT: tc = record_type_class; break;
2363 case TYPE_COMPOUND_UNION: tc = union_type_class; break;
2365 /* gcc handles this as integer */
2366 case TYPE_ENUM: tc = integer_type_class; break;
2369 panic("Unimplemented case in classify_type_to_firm().");
2372 dbg_info *const dbgi = get_dbg_info(&expr->expression.source_position);
2373 ir_mode *const mode = mode_int;
2374 tarval *const tv = new_tarval_from_long(tc, mode);
2375 return new_d_Const(dbgi, mode, tv);
2378 static ir_node *function_name_to_firm(
2379 const string_literal_expression_t *const expr)
2381 if (current_function_name == NULL) {
2382 const source_position_t *const src_pos =
2383 &expr->expression.source_position;
2384 const char *const name = current_function_decl->symbol->string;
2385 const string_t string = { name, strlen(name) + 1 };
2386 current_function_name = string_to_firm(src_pos, "__func__", &string);
2389 return current_function_name;
2392 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2394 statement_t *statement = expr->statement;
2396 assert(statement->kind == STATEMENT_COMPOUND);
2397 return compound_statement_to_firm(&statement->compound);
2400 static ir_node *va_start_expression_to_firm(
2401 const va_start_expression_t *const expr)
2403 ir_type *const method_type = get_ir_type(current_function_decl->type);
2404 int const n = get_method_n_params(method_type) - 1;
2405 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2406 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2407 dbg_info *const dbgi =
2408 get_dbg_info(&expr->expression.source_position);
2409 ir_node *const no_mem = new_NoMem();
2410 ir_node *const arg_sel =
2411 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2413 size_t const parm_size = get_type_size(expr->parameter->type);
2414 ir_node *const cnst = new_Const_long(mode_uint, parm_size);
2415 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2416 set_value_for_expression(expr->ap, add);
2421 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2423 ir_type *const irtype = get_ir_type(expr->expression.datatype);
2424 ir_node *const ap = expression_to_firm(expr->ap);
2425 dbg_info *const dbgi = get_dbg_info(&expr->expression.source_position);
2426 ir_node *const res = deref_address(irtype, ap, dbgi);
2428 size_t const parm_size = get_type_size(expr->expression.datatype);
2429 ir_node *const cnst = new_Const_long(mode_uint, parm_size);
2430 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2431 set_value_for_expression(expr->ap, add);
2436 static ir_node *dereference_addr(const unary_expression_t *const expression)
2438 assert(expression->expression.kind == EXPR_UNARY_DEREFERENCE);
2439 return expression_to_firm(expression->value);
2442 static ir_node *expression_to_addr(const expression_t *expression)
2444 switch(expression->kind) {
2445 case EXPR_REFERENCE:
2446 return reference_addr(&expression->reference);
2447 case EXPR_ARRAY_ACCESS:
2448 return array_access_addr(&expression->array_access);
2450 return select_addr(&expression->select);
2452 return call_expression_to_firm(&expression->call);
2453 case EXPR_UNARY_DEREFERENCE: {
2454 return dereference_addr(&expression->unary);
2459 panic("trying to get address of non-lvalue");
2462 static ir_node *builtin_constant_to_firm(
2463 const builtin_constant_expression_t *expression)
2465 ir_mode *mode = get_ir_mode(expression->expression.datatype);
2468 if (is_constant_expression(expression->value)) {
2473 return new_Const_long(mode, v);
2476 static ir_node *builtin_prefetch_to_firm(
2477 const builtin_prefetch_expression_t *expression)
2479 ir_node *adr = expression_to_firm(expression->adr);
2480 /* no Firm support for prefetch yet */
2485 static ir_node *_expression_to_firm(const expression_t *expression)
2487 switch(expression->kind) {
2489 return const_to_firm(&expression->conste);
2490 case EXPR_STRING_LITERAL:
2491 return string_literal_to_firm(&expression->string);
2492 case EXPR_WIDE_STRING_LITERAL:
2493 return wide_string_literal_to_firm(&expression->wide_string);
2494 case EXPR_REFERENCE:
2495 return reference_expression_to_firm(&expression->reference);
2497 return call_expression_to_firm(&expression->call);
2499 return unary_expression_to_firm(&expression->unary);
2501 return binary_expression_to_firm(&expression->binary);
2502 case EXPR_ARRAY_ACCESS:
2503 return array_access_to_firm(&expression->array_access);
2505 return sizeof_to_firm(&expression->typeprop);
2507 return alignof_to_firm(&expression->typeprop);
2508 case EXPR_CONDITIONAL:
2509 return conditional_to_firm(&expression->conditional);
2511 return select_to_firm(&expression->select);
2512 case EXPR_CLASSIFY_TYPE:
2513 return classify_type_to_firm(&expression->classify_type);
2515 case EXPR_PRETTY_FUNCTION:
2516 return function_name_to_firm(&expression->string);
2517 case EXPR_STATEMENT:
2518 return statement_expression_to_firm(&expression->statement);
2520 return va_start_expression_to_firm(&expression->va_starte);
2522 return va_arg_expression_to_firm(&expression->va_arge);
2524 case EXPR_BUILTIN_SYMBOL:
2525 panic("unimplemented expression found");
2526 case EXPR_BUILTIN_CONSTANT_P:
2527 return builtin_constant_to_firm(&expression->builtin_constant);
2528 case EXPR_BUILTIN_PREFETCH:
2529 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
2535 panic("invalid expression found");
2538 static ir_node *expression_to_firm(const expression_t *expression)
2540 ir_node *res = _expression_to_firm(expression);
2542 if(res != NULL && get_irn_mode(res) == mode_b) {
2543 ir_mode *mode = get_ir_mode(expression->base.datatype);
2544 res = create_conv(NULL, res, mode);
2550 static ir_node *expression_to_modeb(const expression_t *expression)
2552 ir_node *res = _expression_to_firm(expression);
2553 res = create_conv(NULL, res, mode_b);
2559 * create a short-circuit expression evaluation that tries to construct
2560 * efficient control flow structures for &&, || and ! expressions
2562 static void create_condition_evaluation(const expression_t *expression,
2563 ir_node *true_block,
2564 ir_node *false_block)
2566 switch(expression->kind) {
2567 case EXPR_UNARY_NOT: {
2568 const unary_expression_t *unary_expression = &expression->unary;
2569 create_condition_evaluation(unary_expression->value, false_block,
2573 case EXPR_BINARY_LOGICAL_AND: {
2574 const binary_expression_t *binary_expression = &expression->binary;
2576 ir_node *cur_block = get_cur_block();
2577 ir_node *extra_block = new_immBlock();
2578 set_cur_block(cur_block);
2579 create_condition_evaluation(binary_expression->left, extra_block,
2581 mature_immBlock(extra_block);
2582 set_cur_block(extra_block);
2583 create_condition_evaluation(binary_expression->right, true_block,
2587 case EXPR_BINARY_LOGICAL_OR: {
2588 const binary_expression_t *binary_expression = &expression->binary;
2590 ir_node *cur_block = get_cur_block();
2591 ir_node *extra_block = new_immBlock();
2592 set_cur_block(cur_block);
2593 create_condition_evaluation(binary_expression->left, true_block,
2595 mature_immBlock(extra_block);
2596 set_cur_block(extra_block);
2597 create_condition_evaluation(binary_expression->right, true_block,
2605 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2606 ir_node *condition = expression_to_modeb(expression);
2607 ir_node *cond = new_d_Cond(dbgi, condition);
2608 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
2609 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
2611 /* set branch prediction info based on __builtin_expect */
2612 if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
2613 long cnst = fold_constant(expression->binary.right);
2614 cond_jmp_predicate pred;
2617 pred = COND_JMP_PRED_FALSE;
2619 pred = COND_JMP_PRED_TRUE;
2621 set_Cond_jmp_pred(cond, pred);
2624 add_immBlock_pred(true_block, true_proj);
2625 add_immBlock_pred(false_block, false_proj);
2627 set_cur_block(NULL);
2632 static void create_declaration_entity(declaration_t *declaration,
2633 declaration_kind_t declaration_kind,
2634 ir_type *parent_type)
2636 ident *const id = new_id_from_str(declaration->symbol->string);
2637 ir_type *const irtype = get_ir_type(declaration->type);
2638 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
2639 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
2640 set_entity_ld_ident(entity, id);
2642 declaration->declaration_kind = (unsigned char) declaration_kind;
2643 declaration->v.entity = entity;
2644 set_entity_variability(entity, variability_uninitialized);
2645 if(parent_type == get_tls_type())
2646 set_entity_allocation(entity, allocation_automatic);
2647 else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
2648 set_entity_allocation(entity, allocation_static);
2649 /* TODO: visibility? */
2652 typedef struct compound_graph_path_entry_t compound_graph_path_entry_t;
2654 enum compound_graph_entry_type_t {
2655 COMPOUND_GRAPH_ENTRY_ARRAY,
2656 COMPOUND_GRAPH_ENTRY_COMPOUND
2659 struct compound_graph_path_entry_t {
2665 compound_graph_path_entry_t *prev;
2668 static void create_initializer_object(initializer_t *initializer, type_t *type,
2669 ir_entity *entity, compound_graph_path_entry_t *entry, int len);
2671 static compound_graph_path *create_compound_path(ir_type *type,
2672 compound_graph_path_entry_t *entry, int len)
2674 compound_graph_path *path = new_compound_graph_path(type, len);
2677 for( ; entry != NULL; entry = entry->prev, --i) {
2679 if(entry->type == COMPOUND_GRAPH_ENTRY_COMPOUND) {
2680 set_compound_graph_path_node(path, i, entry->v.entity);
2682 assert(entry->type == COMPOUND_GRAPH_ENTRY_ARRAY);
2683 set_compound_graph_path_array_index(path, i, entry->v.array_index);
2691 static void create_initializer_value(initializer_value_t *initializer,
2693 compound_graph_path_entry_t *entry,
2696 ir_node *node = expression_to_firm(initializer->value);
2697 ir_type *type = get_entity_type(entity);
2698 compound_graph_path *path = create_compound_path(type, entry, len);
2699 add_compound_ent_value_w_path(entity, node, path);
2702 static void create_initializer_compound(initializer_list_t *initializer,
2703 compound_type_t *type,
2705 compound_graph_path_entry_t *last_entry,
2708 declaration_t *compound_declaration = type->declaration;
2710 declaration_t *compound_entry = compound_declaration->scope.declarations;
2712 compound_graph_path_entry_t entry;
2713 entry.type = COMPOUND_GRAPH_ENTRY_COMPOUND;
2714 entry.prev = last_entry;
2718 for( ; compound_entry != NULL; compound_entry = compound_entry->next) {
2719 if(compound_entry->symbol == NULL)
2721 if(compound_entry->namespc != NAMESPACE_NORMAL)
2724 if(i >= initializer->len)
2727 entry.v.entity = compound_entry->v.entity;
2729 initializer_t *sub_initializer = initializer->initializers[i];
2731 assert(compound_entry != NULL);
2732 assert(compound_entry->declaration_kind
2733 == DECLARATION_KIND_COMPOUND_MEMBER);
2735 if(sub_initializer->kind == INITIALIZER_VALUE) {
2736 create_initializer_value(&sub_initializer->value,
2737 entity, &entry, len);
2739 type_t *entry_type = skip_typeref(compound_entry->type);
2740 create_initializer_object(sub_initializer, entry_type, entity,
2748 static void create_initializer_array(initializer_list_t *initializer,
2749 array_type_t *type, ir_entity *entity,
2750 compound_graph_path_entry_t *last_entry,
2753 type_t *element_type = type->element_type;
2754 element_type = skip_typeref(element_type);
2756 compound_graph_path_entry_t entry;
2757 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2758 entry.prev = last_entry;
2762 for(i = 0; i < initializer->len; ++i) {
2763 entry.v.array_index = i;
2765 initializer_t *sub_initializer = initializer->initializers[i];
2767 if(sub_initializer->kind == INITIALIZER_VALUE) {
2768 create_initializer_value(&sub_initializer->value,
2769 entity, &entry, len);
2771 create_initializer_object(sub_initializer, element_type, entity,
2777 /* TODO: initialize rest... */
2778 if(type->size_expression != NULL) {
2779 size_t array_len = fold_constant(type->size_expression);
2780 for( ; i < array_len; ++i) {
2787 static void create_initializer_string(initializer_string_t *initializer,
2788 array_type_t *type, ir_entity *entity,
2789 compound_graph_path_entry_t *last_entry,
2792 type_t *element_type = type->element_type;
2793 element_type = skip_typeref(element_type);
2795 compound_graph_path_entry_t entry;
2796 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2797 entry.prev = last_entry;
2800 ir_type *const irtype = get_entity_type(entity);
2801 size_t arr_len = get_array_type_size(type);
2802 const char *const p = initializer->string.begin;
2803 if (initializer->string.size < arr_len) {
2804 arr_len = initializer->string.size;
2806 for (size_t i = 0; i < arr_len; ++i) {
2807 entry.v.array_index = i;
2809 ir_node *node = new_Const_long(mode_Bs, p[i]);
2810 compound_graph_path *path = create_compound_path(irtype, &entry, len);
2811 add_compound_ent_value_w_path(entity, node, path);
2815 static void create_initializer_wide_string(
2816 const initializer_wide_string_t *const initializer, array_type_t *const type,
2817 ir_entity *const entity, compound_graph_path_entry_t *const last_entry,
2820 type_t *element_type = type->element_type;
2821 element_type = skip_typeref(element_type);
2823 compound_graph_path_entry_t entry;
2824 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2825 entry.prev = last_entry;
2828 ir_type *const irtype = get_entity_type(entity);
2829 const size_t arr_len = get_array_type_size(type);
2830 const wchar_rep_t * p = initializer->string.begin;
2831 const wchar_rep_t *const end = p + initializer->string.size;
2832 for (size_t i = 0; i < arr_len && p != end; ++i, ++p) {
2833 entry.v.array_index = i;
2835 ir_node *node = new_Const_long(mode_int, *p);
2836 compound_graph_path *path = create_compound_path(irtype, &entry, len);
2837 add_compound_ent_value_w_path(entity, node, path);
2841 static void create_initializer_object(initializer_t *initializer, type_t *type,
2842 ir_entity *entity, compound_graph_path_entry_t *entry, int len)
2844 if(is_type_array(type)) {
2845 array_type_t *array_type = &type->array;
2847 switch (initializer->kind) {
2848 case INITIALIZER_STRING: {
2849 initializer_string_t *const string = &initializer->string;
2850 create_initializer_string(string, array_type, entity, entry, len);
2854 case INITIALIZER_WIDE_STRING: {
2855 initializer_wide_string_t *const string = &initializer->wide_string;
2856 create_initializer_wide_string(string, array_type, entity, entry, len);
2860 case INITIALIZER_LIST: {
2861 initializer_list_t *const list = &initializer->list;
2862 create_initializer_array(list, array_type, entity, entry, len);
2866 case INITIALIZER_VALUE:
2869 panic("Unhandled initializer");
2871 assert(initializer->kind == INITIALIZER_LIST);
2872 initializer_list_t *list = &initializer->list;
2874 assert(is_type_compound(type));
2875 compound_type_t *compound_type = &type->compound;
2876 create_initializer_compound(list, compound_type, entity, entry, len);
2880 static void create_initializer_local_variable_entity(declaration_t *declaration)
2882 initializer_t *initializer = declaration->init.initializer;
2883 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
2884 ir_entity *entity = declaration->v.entity;
2885 ir_node *memory = get_store();
2886 ir_node *nomem = new_NoMem();
2887 ir_node *frame = get_irg_frame(current_ir_graph);
2888 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
2890 if(initializer->kind == INITIALIZER_VALUE) {
2891 initializer_value_t *initializer_value = &initializer->value;
2893 ir_node *value = expression_to_firm(initializer_value->value);
2894 type_t *type = skip_typeref(declaration->type);
2895 assign_value(dbgi, addr, type, value);
2899 /* create a "template" entity which is copied to the entity on the stack */
2900 ident *const id = unique_ident("initializer");
2901 ir_type *const irtype = get_ir_type(declaration->type);
2902 ir_type *const global_type = get_glob_type();
2903 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
2904 set_entity_ld_ident(init_entity, id);
2906 set_entity_variability(init_entity, variability_initialized);
2907 set_entity_visibility(init_entity, visibility_local);
2908 set_entity_allocation(init_entity, allocation_static);
2910 ir_graph *const old_current_ir_graph = current_ir_graph;
2911 current_ir_graph = get_const_code_irg();
2913 type_t *const type = skip_typeref(declaration->type);
2914 create_initializer_object(initializer, type, init_entity, NULL, 0);
2916 assert(current_ir_graph == get_const_code_irg());
2917 current_ir_graph = old_current_ir_graph;
2919 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
2920 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
2922 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
2923 set_store(copyb_mem);
2926 static void create_initializer(declaration_t *declaration)
2928 initializer_t *initializer = declaration->init.initializer;
2929 if(initializer == NULL)
2932 declaration_kind_t declaration_kind
2933 = (declaration_kind_t) declaration->declaration_kind;
2934 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
2935 create_initializer_local_variable_entity(declaration);
2939 if(initializer->kind == INITIALIZER_VALUE) {
2940 initializer_value_t *initializer_value = &initializer->value;
2942 ir_node *value = expression_to_firm(initializer_value->value);
2944 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2945 set_value(declaration->v.value_number, value);
2947 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
2949 ir_entity *entity = declaration->v.entity;
2951 set_entity_variability(entity, variability_initialized);
2952 set_atomic_ent_value(entity, value);
2955 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
2956 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
2958 ir_entity *entity = declaration->v.entity;
2959 set_entity_variability(entity, variability_initialized);
2961 type_t *type = skip_typeref(declaration->type);
2962 create_initializer_object(initializer, type, entity, NULL, 0);
2967 * Creates a Firm local variable from a declaration.
2969 static void create_local_variable(declaration_t *declaration)
2971 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
2973 bool needs_entity = declaration->address_taken;
2974 type_t *type = skip_typeref(declaration->type);
2976 if(is_type_array(type) || is_type_compound(type)) {
2977 needs_entity = true;
2981 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2982 create_declaration_entity(declaration,
2983 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
2986 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
2987 declaration->v.value_number = next_value_number_function;
2988 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
2989 ++next_value_number_function;
2992 create_initializer(declaration);
2995 static void create_local_static_variable(declaration_t *declaration)
2997 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
2999 type_t *const type = skip_typeref(declaration->type);
3000 ir_type *const global_type = get_glob_type();
3001 ident *const id = unique_ident(declaration->symbol->string);
3002 ir_type *const irtype = get_ir_type(type);
3003 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3004 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
3005 set_entity_ld_ident(entity, id);
3007 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3008 declaration->v.entity = entity;
3009 set_entity_variability(entity, variability_uninitialized);
3010 set_entity_visibility(entity, visibility_local);
3011 set_entity_allocation(entity, allocation_static);
3013 ir_graph *const old_current_ir_graph = current_ir_graph;
3014 current_ir_graph = get_const_code_irg();
3016 create_initializer(declaration);
3018 assert(current_ir_graph == get_const_code_irg());
3019 current_ir_graph = old_current_ir_graph;
3024 static void return_statement_to_firm(return_statement_t *statement)
3026 if(get_cur_block() == NULL)
3029 ir_type *func_irtype = get_ir_type(current_function_decl->type);
3031 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
3035 if(get_method_n_ress(func_irtype) > 0) {
3036 ir_type *res_type = get_method_res_type(func_irtype, 0);
3038 if(statement->return_value != NULL) {
3039 ir_node *node = expression_to_firm(statement->return_value);
3040 node = do_strict_conv(dbgi, node);
3044 if(is_compound_type(res_type)) {
3047 mode = get_type_mode(res_type);
3049 in[0] = new_Unknown(mode);
3053 /* build return_value for its side effects */
3054 if(statement->return_value != NULL) {
3055 expression_to_firm(statement->return_value);
3060 ir_node *store = get_store();
3061 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
3063 ir_node *end_block = get_irg_end_block(current_ir_graph);
3064 add_immBlock_pred(end_block, ret);
3066 set_cur_block(NULL);
3069 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3071 if(get_cur_block() == NULL)
3074 return expression_to_firm(statement->expression);
3077 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3079 ir_node *result = NULL;
3080 statement_t *statement = compound->statements;
3081 for( ; statement != NULL; statement = statement->base.next) {
3082 //context2firm(&statement->scope);
3084 if(statement->base.next == NULL
3085 && statement->kind == STATEMENT_EXPRESSION) {
3086 result = expression_statement_to_firm(
3087 &statement->expression);
3090 statement_to_firm(statement);
3096 static void create_local_declaration(declaration_t *declaration)
3098 type_t *type = skip_typeref(declaration->type);
3100 switch ((storage_class_tag_t) declaration->storage_class) {
3101 case STORAGE_CLASS_STATIC:
3102 create_local_static_variable(declaration);
3104 case STORAGE_CLASS_ENUM_ENTRY:
3105 panic("enum entry declaration in local block found");
3106 case STORAGE_CLASS_EXTERN:
3107 panic("extern declaration in local block found");
3108 case STORAGE_CLASS_NONE:
3109 case STORAGE_CLASS_AUTO:
3110 case STORAGE_CLASS_REGISTER:
3111 if(is_type_function(type)) {
3112 panic("nested functions not supported yet");
3114 create_local_variable(declaration);
3117 case STORAGE_CLASS_TYPEDEF:
3118 case STORAGE_CLASS_THREAD:
3119 case STORAGE_CLASS_THREAD_EXTERN:
3120 case STORAGE_CLASS_THREAD_STATIC:
3123 panic("invalid storage class found");
3126 static void declaration_statement_to_firm(declaration_statement_t *statement)
3128 declaration_t *declaration = statement->declarations_begin;
3129 declaration_t *end = statement->declarations_end->next;
3130 for( ; declaration != end; declaration = declaration->next) {
3131 if(declaration->namespc != NAMESPACE_NORMAL)
3133 create_local_variable(declaration);
3137 static void if_statement_to_firm(if_statement_t *statement)
3139 ir_node *cur_block = get_cur_block();
3141 ir_node *fallthrough_block = new_immBlock();
3143 /* the true (blocks) */
3144 ir_node *true_block;
3145 if (statement->true_statement != NULL) {
3146 true_block = new_immBlock();
3147 statement_to_firm(statement->true_statement);
3148 if(get_cur_block() != NULL) {
3149 ir_node *jmp = new_Jmp();
3150 add_immBlock_pred(fallthrough_block, jmp);
3153 true_block = fallthrough_block;
3156 /* the false (blocks) */
3157 ir_node *false_block;
3158 if(statement->false_statement != NULL) {
3159 false_block = new_immBlock();
3161 statement_to_firm(statement->false_statement);
3162 if(get_cur_block() != NULL) {
3163 ir_node *jmp = new_Jmp();
3164 add_immBlock_pred(fallthrough_block, jmp);
3167 false_block = fallthrough_block;
3170 /* create the condition */
3171 if(cur_block != NULL) {
3172 set_cur_block(cur_block);
3173 create_condition_evaluation(statement->condition, true_block,
3177 mature_immBlock(true_block);
3178 if(false_block != fallthrough_block) {
3179 mature_immBlock(false_block);
3181 mature_immBlock(fallthrough_block);
3183 set_cur_block(fallthrough_block);
3186 static void while_statement_to_firm(while_statement_t *statement)
3188 ir_node *jmp = NULL;
3189 if(get_cur_block() != NULL) {
3193 /* create the header block */
3194 ir_node *header_block = new_immBlock();
3196 add_immBlock_pred(header_block, jmp);
3199 /* the false block */
3200 ir_node *false_block = new_immBlock();
3203 ir_node *body_block;
3204 if (statement->body != NULL) {
3205 ir_node *old_continue_label = continue_label;
3206 ir_node *old_break_label = break_label;
3207 continue_label = header_block;
3208 break_label = false_block;
3210 body_block = new_immBlock();
3211 statement_to_firm(statement->body);
3213 assert(continue_label == header_block);
3214 assert(break_label == false_block);
3215 continue_label = old_continue_label;
3216 break_label = old_break_label;
3218 if(get_cur_block() != NULL) {
3220 add_immBlock_pred(header_block, jmp);
3223 body_block = header_block;
3226 /* create the condition */
3227 set_cur_block(header_block);
3229 create_condition_evaluation(statement->condition, body_block, false_block);
3230 mature_immBlock(body_block);
3231 mature_immBlock(false_block);
3232 mature_immBlock(header_block);
3234 set_cur_block(false_block);
3237 static void do_while_statement_to_firm(do_while_statement_t *statement)
3239 ir_node *jmp = NULL;
3240 if(get_cur_block() != NULL) {
3244 /* create the header block */
3245 ir_node *header_block = new_immBlock();
3247 /* the false block */
3248 ir_node *false_block = new_immBlock();
3251 ir_node *body_block = new_immBlock();
3253 add_immBlock_pred(body_block, jmp);
3256 if (statement->body != NULL) {
3257 ir_node *old_continue_label = continue_label;
3258 ir_node *old_break_label = break_label;
3259 continue_label = header_block;
3260 break_label = false_block;
3262 statement_to_firm(statement->body);
3264 assert(continue_label == header_block);
3265 assert(break_label == false_block);
3266 continue_label = old_continue_label;
3267 break_label = old_break_label;
3269 if (get_cur_block() == NULL) {
3270 mature_immBlock(header_block);
3271 mature_immBlock(body_block);
3272 mature_immBlock(false_block);
3277 ir_node *body_jmp = new_Jmp();
3278 add_immBlock_pred(header_block, body_jmp);
3279 mature_immBlock(header_block);
3281 /* create the condition */
3282 set_cur_block(header_block);
3284 create_condition_evaluation(statement->condition, body_block, false_block);
3285 mature_immBlock(body_block);
3286 mature_immBlock(false_block);
3287 mature_immBlock(header_block);
3289 set_cur_block(false_block);
3292 static void for_statement_to_firm(for_statement_t *statement)
3294 ir_node *jmp = NULL;
3295 if (get_cur_block() != NULL) {
3296 if(statement->initialisation != NULL) {
3297 expression_to_firm(statement->initialisation);
3300 /* create declarations */
3301 declaration_t *declaration = statement->scope.declarations;
3302 for( ; declaration != NULL; declaration = declaration->next) {
3303 create_local_declaration(declaration);
3310 /* create the step block */
3311 ir_node *const step_block = new_immBlock();
3312 if (statement->step != NULL) {
3313 expression_to_firm(statement->step);
3315 ir_node *const step_jmp = new_Jmp();
3317 /* create the header block */
3318 ir_node *const header_block = new_immBlock();
3320 add_immBlock_pred(header_block, jmp);
3322 add_immBlock_pred(header_block, step_jmp);
3324 /* the false block */
3325 ir_node *const false_block = new_immBlock();
3328 ir_node * body_block;
3329 if (statement->body != NULL) {
3330 ir_node *const old_continue_label = continue_label;
3331 ir_node *const old_break_label = break_label;
3332 continue_label = step_block;
3333 break_label = false_block;
3335 body_block = new_immBlock();
3336 statement_to_firm(statement->body);
3338 assert(continue_label == step_block);
3339 assert(break_label == false_block);
3340 continue_label = old_continue_label;
3341 break_label = old_break_label;
3343 if (get_cur_block() != NULL) {
3345 add_immBlock_pred(step_block, jmp);
3348 body_block = step_block;
3351 /* create the condition */
3352 set_cur_block(header_block);
3353 if (statement->condition != NULL) {
3354 create_condition_evaluation(statement->condition, body_block,
3357 keep_alive(header_block);
3359 add_immBlock_pred(body_block, jmp);
3362 mature_immBlock(body_block);
3363 mature_immBlock(false_block);
3364 mature_immBlock(step_block);
3365 mature_immBlock(header_block);
3366 mature_immBlock(false_block);
3368 set_cur_block(false_block);
3371 static void create_jump_statement(const statement_t *statement,
3372 ir_node *target_block)
3374 if(get_cur_block() == NULL)
3377 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3378 ir_node *jump = new_d_Jmp(dbgi);
3379 add_immBlock_pred(target_block, jump);
3381 set_cur_block(NULL);
3384 static void switch_statement_to_firm(const switch_statement_t *statement)
3386 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
3388 ir_node *expression = expression_to_firm(statement->expression);
3389 ir_node *cond = new_d_Cond(dbgi, expression);
3390 ir_node *break_block = new_immBlock();
3392 set_cur_block(NULL);
3394 ir_node *const old_switch_cond = current_switch_cond;
3395 ir_node *const old_break_label = break_label;
3396 const bool old_saw_default_label = saw_default_label;
3397 current_switch_cond = cond;
3398 break_label = break_block;
3400 if (statement->body != NULL) {
3401 statement_to_firm(statement->body);
3404 if(get_cur_block() != NULL) {
3405 ir_node *jmp = new_Jmp();
3406 add_immBlock_pred(break_block, jmp);
3409 if (!saw_default_label) {
3410 set_cur_block(get_nodes_block(cond));
3411 ir_node *const proj = new_d_defaultProj(dbgi, cond,
3412 MAGIC_DEFAULT_PN_NUMBER);
3413 add_immBlock_pred(break_block, proj);
3416 assert(current_switch_cond == cond);
3417 assert(break_label == break_block);
3418 current_switch_cond = old_switch_cond;
3419 break_label = old_break_label;
3420 saw_default_label = old_saw_default_label;
3422 mature_immBlock(break_block);
3423 set_cur_block(break_block);
3426 static void case_label_to_firm(const case_label_statement_t *statement)
3428 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
3430 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
3432 /* let's create a node and hope firm constant folding creates a Const
3435 set_cur_block(get_nodes_block(current_switch_cond));
3436 if(statement->expression) {
3437 long pn = fold_constant(statement->expression);
3438 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
3439 /* oops someone detected our cheating... */
3440 panic("magic default pn used");
3442 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
3444 saw_default_label = true;
3445 proj = new_d_defaultProj(dbgi, current_switch_cond,
3446 MAGIC_DEFAULT_PN_NUMBER);
3449 ir_node *block = new_immBlock();
3450 if (fallthrough != NULL) {
3451 add_immBlock_pred(block, fallthrough);
3453 add_immBlock_pred(block, proj);
3454 mature_immBlock(block);
3456 if(statement->label_statement != NULL) {
3457 statement_to_firm(statement->label_statement);
3461 static ir_node *get_label_block(declaration_t *label)
3463 assert(label->namespc == NAMESPACE_LABEL);
3465 if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
3466 return label->v.block;
3468 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
3470 ir_node *old_cur_block = get_cur_block();
3471 ir_node *block = new_immBlock();
3472 set_cur_block(old_cur_block);
3474 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
3475 label->v.block = block;
3477 ARR_APP1(ir_node *, imature_blocks, block);
3482 static void label_to_firm(const label_statement_t *statement)
3484 ir_node *block = get_label_block(statement->label);
3486 if(get_cur_block() != NULL) {
3487 ir_node *jmp = new_Jmp();
3488 add_immBlock_pred(block, jmp);
3491 set_cur_block(block);
3494 if(statement->label_statement != NULL) {
3495 statement_to_firm(statement->label_statement);
3499 static void goto_to_firm(const goto_statement_t *statement)
3501 if(get_cur_block() == NULL)
3504 ir_node *block = get_label_block(statement->label);
3505 ir_node *jmp = new_Jmp();
3506 add_immBlock_pred(block, jmp);
3508 set_cur_block(NULL);
3511 typedef enum modifier_t {
3512 ASM_MODIFIER_WRITE_ONLY = 1 << 0,
3513 ASM_MODIFIER_READ_WRITE = 1 << 1,
3514 ASM_MODIFIER_COMMUTATIVE = 1 << 2,
3515 ASM_MODIFIER_EARLYCLOBBER = 1 << 3,
3519 static void asm_statement_to_firm(const asm_statement_t *statement)
3521 bool needs_memory = false;
3523 size_t n_clobbers = 0;
3524 asm_clobber_t *clobber = statement->clobbers;
3525 for( ; clobber != NULL; clobber = clobber->next) {
3526 if(strcmp(clobber->clobber, "memory") == 0) {
3527 needs_memory = true;
3531 ident *id = new_id_from_str(clobber->clobber);
3532 obstack_ptr_grow(&asm_obst, id);
3535 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
3536 ident **clobbers = NULL;
3537 if(n_clobbers > 0) {
3538 clobbers = obstack_finish(&asm_obst);
3541 /* find and count input and output constraints */
3542 asm_constraint_t *constraint = statement->inputs;
3543 for( ; constraint != NULL; constraint = constraint->next) {
3545 bool supports_memop = false;
3546 for(const char *c = constraint->constraints; *c != 0; ++c) {
3547 /* TODO: improve error messages */
3551 panic("multiple alternative assembler constraints not "
3559 supports_memop = true;
3560 obstack_1grow(&asm_obst, *c);
3563 if(modifiers & ASM_MODIFIER_READ_WRITE)
3564 panic("inconsistent register constraints");
3565 modifiers |= ASM_MODIFIER_WRITE_ONLY;
3568 if(modifiers & ASM_MODIFIER_WRITE_ONLY)
3569 panic("inconsistent register constraints");
3570 modifiers |= ASM_MODIFIER_READ_WRITE;
3573 modifiers |= ASM_MODIFIER_EARLYCLOBBER;
3574 panic("early clobber assembler constraint not supported yet");
3577 modifiers |= ASM_MODIFIER_COMMUTATIVE;
3578 panic("commutative assembler constraint not supported yet");
3581 /* skip register preferences stuff... */
3582 while(*c != 0 && *c != ',')
3586 /* skip register preferences stuff... */
3590 obstack_1grow(&asm_obst, *c);
3594 obstack_1grow(&asm_obst, '\0');
3595 const char *constraint_string = obstack_finish(&asm_obst);
3597 needs_memory |= supports_memop;
3598 if(supports_memop) {
3606 static void statement_to_firm(statement_t *statement)
3608 switch(statement->kind) {
3609 case STATEMENT_INVALID:
3610 panic("invalid statement found");
3611 case STATEMENT_COMPOUND:
3612 compound_statement_to_firm(&statement->compound);
3614 case STATEMENT_RETURN:
3615 return_statement_to_firm(&statement->returns);
3617 case STATEMENT_EXPRESSION:
3618 expression_statement_to_firm(&statement->expression);
3621 if_statement_to_firm(&statement->ifs);
3623 case STATEMENT_WHILE:
3624 while_statement_to_firm(&statement->whiles);
3626 case STATEMENT_DO_WHILE:
3627 do_while_statement_to_firm(&statement->do_while);
3629 case STATEMENT_DECLARATION:
3630 declaration_statement_to_firm(&statement->declaration);
3632 case STATEMENT_BREAK:
3633 create_jump_statement(statement, break_label);
3635 case STATEMENT_CONTINUE:
3636 create_jump_statement(statement, continue_label);
3638 case STATEMENT_SWITCH:
3639 switch_statement_to_firm(&statement->switchs);
3641 case STATEMENT_CASE_LABEL:
3642 case_label_to_firm(&statement->case_label);
3645 for_statement_to_firm(&statement->fors);
3647 case STATEMENT_LABEL:
3648 label_to_firm(&statement->label);
3650 case STATEMENT_GOTO:
3651 goto_to_firm(&statement->gotos);
3654 //asm_statement_to_firm(&statement->asms);
3658 panic("Statement not implemented\n");
3661 static int count_decls_in_expression(const expression_t *expression);
3663 static int count_local_declarations(const declaration_t * decl,
3664 const declaration_t *const end)
3667 for (; decl != end; decl = decl->next) {
3668 if(decl->namespc != NAMESPACE_NORMAL)
3670 const type_t *type = skip_typeref(decl->type);
3671 if (!decl->address_taken && is_type_scalar(type))
3673 const initializer_t *initializer = decl->init.initializer;
3674 /* FIXME: should walk initializer hierarchies... */
3675 if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
3676 count += count_decls_in_expression(initializer->value.value);
3682 static int count_decls_in_expression(const expression_t *expression) {
3683 if(expression == NULL)
3686 switch(expression->base.kind) {
3687 case EXPR_STATEMENT:
3688 return count_decls_in_stmts(expression->statement.statement);
3690 int count_left = count_decls_in_expression(expression->binary.left);
3691 int count_right = count_decls_in_expression(expression->binary.right);
3692 return count_left + count_right;
3695 return count_decls_in_expression(expression->unary.value);
3701 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
3702 * (or implement all the missing expressions here/implement a walker)
3708 static int count_decls_in_stmts(const statement_t *stmt)
3711 for (; stmt != NULL; stmt = stmt->base.next) {
3712 switch (stmt->kind) {
3713 case STATEMENT_DECLARATION: {
3714 const declaration_statement_t *const decl_stmt = &stmt->declaration;
3715 count += count_local_declarations(decl_stmt->declarations_begin,
3716 decl_stmt->declarations_end->next);
3720 case STATEMENT_COMPOUND: {
3721 const compound_statement_t *const comp =
3723 count += count_decls_in_stmts(comp->statements);
3727 case STATEMENT_IF: {
3728 const if_statement_t *const if_stmt = &stmt->ifs;
3729 count += count_decls_in_expression(if_stmt->condition);
3730 count += count_decls_in_stmts(if_stmt->true_statement);
3731 count += count_decls_in_stmts(if_stmt->false_statement);
3735 case STATEMENT_SWITCH: {
3736 const switch_statement_t *const switch_stmt = &stmt->switchs;
3737 count += count_decls_in_expression(switch_stmt->expression);
3738 count += count_decls_in_stmts(switch_stmt->body);
3742 case STATEMENT_LABEL: {
3743 const label_statement_t *const label_stmt = &stmt->label;
3744 count += count_decls_in_stmts(label_stmt->label_statement);
3748 case STATEMENT_WHILE: {
3749 const while_statement_t *const while_stmt = &stmt->whiles;
3750 count += count_decls_in_expression(while_stmt->condition);
3751 count += count_decls_in_stmts(while_stmt->body);
3755 case STATEMENT_DO_WHILE: {
3756 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
3757 count += count_decls_in_expression(do_while_stmt->condition);
3758 count += count_decls_in_stmts(do_while_stmt->body);
3762 case STATEMENT_FOR: {
3763 const for_statement_t *const for_stmt = &stmt->fors;
3764 count += count_local_declarations(for_stmt->scope.declarations, NULL);
3765 count += count_decls_in_expression(for_stmt->initialisation);
3766 count += count_decls_in_expression(for_stmt->condition);
3767 count += count_decls_in_expression(for_stmt->step);
3768 count += count_decls_in_stmts(for_stmt->body);
3772 case STATEMENT_CASE_LABEL: {
3773 const case_label_statement_t *label = &stmt->case_label;
3774 count += count_decls_in_expression(label->expression);
3775 count += count_decls_in_stmts(label->label_statement);
3780 case STATEMENT_BREAK:
3781 case STATEMENT_CONTINUE:
3784 case STATEMENT_EXPRESSION: {
3785 const expression_statement_t *expr_stmt = &stmt->expression;
3786 count += count_decls_in_expression(expr_stmt->expression);
3790 case STATEMENT_GOTO:
3791 case STATEMENT_INVALID:
3794 case STATEMENT_RETURN: {
3795 const return_statement_t *ret_stmt = &stmt->returns;
3796 count += count_decls_in_expression(ret_stmt->return_value);
3804 static int get_function_n_local_vars(declaration_t *declaration)
3808 /* count parameters */
3809 count += count_local_declarations(declaration->scope.declarations, NULL);
3811 /* count local variables declared in body */
3812 count += count_decls_in_stmts(declaration->init.statement);
3817 static void initialize_function_parameters(declaration_t *declaration)
3819 ir_graph *irg = current_ir_graph;
3820 ir_node *args = get_irg_args(irg);
3821 ir_node *start_block = get_irg_start_block(irg);
3822 ir_type *function_irtype = get_ir_type(declaration->type);
3825 declaration_t *parameter = declaration->scope.declarations;
3826 for( ; parameter != NULL; parameter = parameter->next, ++n) {
3827 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
3828 type_t *type = skip_typeref(parameter->type);
3830 bool needs_entity = parameter->address_taken;
3831 assert(!is_type_array(type));
3832 if(is_type_compound(type)) {
3833 needs_entity = true;
3837 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
3838 ident *id = new_id_from_str(parameter->symbol->string);
3839 set_entity_ident(entity, id);
3841 parameter->declaration_kind
3842 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
3843 parameter->v.entity = entity;
3847 ir_mode *mode = get_ir_mode(parameter->type);
3849 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
3851 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3852 parameter->v.value_number = next_value_number_function;
3853 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
3854 ++next_value_number_function;
3856 set_value(parameter->v.value_number, proj);
3861 * Handle additional decl modifiers for IR-graphs
3863 * @param irg the IR-graph
3864 * @param dec_modifiers additional modifiers
3866 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
3868 if (decl_modifiers & DM_NORETURN) {
3869 /* TRUE if the declaration includes the Microsoft
3870 __declspec(noreturn) specifier. */
3871 set_irg_additional_property(irg, mtp_property_noreturn);
3873 if (decl_modifiers & DM_NOTHROW) {
3874 /* TRUE if the declaration includes the Microsoft
3875 __declspec(nothrow) specifier. */
3876 set_irg_additional_property(irg, mtp_property_nothrow);
3878 if (decl_modifiers & DM_NAKED) {
3879 /* TRUE if the declaration includes the Microsoft
3880 __declspec(naked) specifier. */
3881 set_irg_additional_property(irg, mtp_property_naked);
3883 if (decl_modifiers & DM_FORCEINLINE) {
3884 /* TRUE if the declaration includes the
3885 Microsoft __forceinline specifier. */
3886 set_irg_inline_property(irg, irg_inline_forced);
3888 if (decl_modifiers & DM_NOINLINE) {
3889 /* TRUE if the declaration includes the Microsoft
3890 __declspec(noinline) specifier. */
3891 set_irg_inline_property(irg, irg_inline_forbidden);
3895 static void create_function(declaration_t *declaration)
3897 ir_entity *function_entity = get_function_entity(declaration);
3899 if(declaration->init.statement == NULL)
3902 current_function_decl = declaration;
3903 current_function_name = NULL;
3905 assert(imature_blocks == NULL);
3906 imature_blocks = NEW_ARR_F(ir_node*, 0);
3908 int n_local_vars = get_function_n_local_vars(declaration);
3909 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
3910 ir_node *first_block = get_cur_block();
3912 /* set inline flags */
3913 if (declaration->is_inline)
3914 set_irg_inline_property(irg, irg_inline_recomended);
3915 handle_decl_modifier_irg(irg, declaration->modifiers);
3917 next_value_number_function = 0;
3918 initialize_function_parameters(declaration);
3920 statement_to_firm(declaration->init.statement);
3922 ir_node *end_block = get_irg_end_block(irg);
3924 /* do we have a return statement yet? */
3925 if(get_cur_block() != NULL) {
3926 type_t *type = skip_typeref(declaration->type);
3927 assert(is_type_function(type));
3928 const function_type_t *func_type = &type->function;
3929 const type_t *return_type
3930 = skip_typeref(func_type->return_type);
3933 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
3934 ret = new_Return(get_store(), 0, NULL);
3937 if(is_type_scalar(return_type)) {
3938 mode = get_ir_mode(func_type->return_type);
3944 /* ยง5.1.2.2.3 main implicitly returns 0 */
3945 if (strcmp(declaration->symbol->string, "main") == 0) {
3946 in[0] = new_Const(mode, get_mode_null(mode));
3948 in[0] = new_Unknown(mode);
3950 ret = new_Return(get_store(), 1, in);
3952 add_immBlock_pred(end_block, ret);
3955 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
3956 mature_immBlock(imature_blocks[i]);
3958 DEL_ARR_F(imature_blocks);
3959 imature_blocks = NULL;
3961 mature_immBlock(first_block);
3962 mature_immBlock(end_block);
3964 irg_finalize_cons(irg);
3966 /* finalize the frame type */
3967 ir_type *frame_type = get_irg_frame_type(irg);
3968 int n = get_compound_n_members(frame_type);
3971 for(int i = 0; i < n; ++i) {
3972 ir_entity *entity = get_compound_member(frame_type, i);
3973 ir_type *entity_type = get_entity_type(entity);
3975 int align = get_type_alignment_bytes(entity_type);
3976 if(align > align_all)
3980 misalign = offset % align;
3982 offset += align - misalign;
3986 set_entity_offset(entity, offset);
3987 offset += get_type_size_bytes(entity_type);
3989 set_type_size_bytes(frame_type, offset);
3990 set_type_alignment_bytes(frame_type, align_all);
3991 set_type_state(frame_type, layout_fixed);
3996 static void create_global_variable(declaration_t *declaration)
4000 switch ((storage_class_tag_t)declaration->storage_class) {
4001 case STORAGE_CLASS_STATIC:
4002 vis = visibility_local;
4005 case STORAGE_CLASS_EXTERN:
4006 vis = visibility_external_allocated;
4009 case STORAGE_CLASS_NONE:
4010 vis = visibility_external_visible;
4013 case STORAGE_CLASS_THREAD:
4014 vis = visibility_external_visible;
4017 case STORAGE_CLASS_THREAD_EXTERN:
4018 vis = visibility_external_allocated;
4021 case STORAGE_CLASS_THREAD_STATIC:
4022 vis = visibility_local;
4026 var_type = get_tls_type();
4030 var_type = get_glob_type();
4034 create_declaration_entity(declaration,
4035 DECLARATION_KIND_GLOBAL_VARIABLE,
4037 set_entity_visibility(declaration->v.entity, vis);
4039 current_ir_graph = get_const_code_irg();
4040 create_initializer(declaration);
4043 case STORAGE_CLASS_TYPEDEF:
4044 case STORAGE_CLASS_AUTO:
4045 case STORAGE_CLASS_REGISTER:
4046 case STORAGE_CLASS_ENUM_ENTRY:
4049 panic("Invalid storage class for global variable");
4052 static void scope_to_firm(scope_t *scope)
4054 /* first pass: create declarations */
4055 declaration_t *declaration = scope->declarations;
4056 for( ; declaration != NULL; declaration = declaration->next) {
4057 if(declaration->namespc != NAMESPACE_NORMAL)
4059 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4060 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4062 if(declaration->symbol == NULL)
4065 type_t *type = skip_typeref(declaration->type);
4066 if(is_type_function(type)) {
4067 get_function_entity(declaration);
4069 create_global_variable(declaration);
4073 /* second pass: create code */
4074 declaration = scope->declarations;
4075 for( ; declaration != NULL; declaration = declaration->next) {
4076 if(declaration->namespc != NAMESPACE_NORMAL)
4078 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4079 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4081 if(declaration->symbol == NULL)
4084 type_t *type = declaration->type;
4085 if(type->kind != TYPE_FUNCTION)
4088 create_function(declaration);
4092 void init_ast2firm(void)
4094 obstack_init(&asm_obst);
4095 init_atomic_modes();
4097 /* create idents for all known runtime functions */
4098 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
4099 predef_idents[rts_data[i].id] = new_id_from_str(rts_data[i].name);
4103 void exit_ast2firm(void)
4105 obstack_free(&asm_obst, NULL);
4108 void translation_unit_to_firm(translation_unit_t *unit)
4110 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
4111 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
4112 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
4114 ir_type_int = get_ir_type(type_int);
4115 ir_type_const_char = get_ir_type(type_const_char);
4116 ir_type_wchar_t = get_ir_type(type_wchar_t);
4117 ir_type_void = get_ir_type(type_int); /* we don't have a real void
4120 type_void->base.firm_type = ir_type_void;
4122 /* just to be sure */
4123 continue_label = NULL;
4125 current_switch_cond = NULL;
4127 scope_to_firm(&unit->scope);