9 #include <libfirm/firm.h>
10 #include <libfirm/adt/obst.h>
14 #include "adt/error.h"
15 #include "adt/array.h"
20 #include "lang_features.h"
21 #include "driver/firm_opt.h"
22 #include "driver/firm_cmdline.h"
24 #define MAGIC_DEFAULT_PN_NUMBER (long) -314159265
26 static ir_type *ir_type_const_char;
27 static ir_type *ir_type_wchar_t;
28 static ir_type *ir_type_void;
29 static ir_type *ir_type_int;
31 static type_t *type_const_char;
32 static type_t *type_void;
33 static type_t *type_int;
35 static int next_value_number_function;
36 static ir_node *continue_label;
37 static ir_node *break_label;
38 static ir_node *current_switch_cond;
39 static bool saw_default_label;
40 static ir_node **imature_blocks;
42 static const declaration_t *current_function_decl;
43 static ir_node *current_function_name;
45 static struct obstack asm_obst;
47 typedef enum declaration_type_t {
48 DECLARATION_TYPE_UNKNOWN,
49 DECLARATION_TYPE_FUNCTION,
50 DECLARATION_TYPE_GLOBAL_VARIABLE,
51 DECLARATION_TYPE_LOCAL_VARIABLE,
52 DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
53 DECLARATION_TYPE_COMPOUND_MEMBER,
54 DECLARATION_TYPE_LABEL_BLOCK,
55 DECLARATION_TYPE_ENUM_ENTRY
58 static ir_type *get_ir_type(type_t *type);
59 static int count_decls_in_stmts(const statement_t *stmt);
61 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
65 const declaration_t *declaration = & value_numbers[pos]->declaration;
67 print_warning_prefix(declaration->source_position);
68 fprintf(stderr, "variable '%s' might be used uninitialized\n",
69 declaration->symbol->string);
71 fprintf(stderr, "Some variable might be used uninitialized\n");
72 return new_r_Unknown(irg, mode);
75 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
77 const source_position_t *pos = (const source_position_t*) dbg;
80 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
84 const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
86 const source_position_t *pos = (const source_position_t*) dbg;
91 return pos->input_name;
94 static dbg_info *get_dbg_info(const source_position_t *pos)
96 return (dbg_info*) pos;
99 static unsigned unique_id = 0;
101 static ident *unique_ident(const char *tag)
105 snprintf(buf, sizeof(buf), "%s.%u", tag, unique_id);
107 return new_id_from_str(buf);
111 * Return the signed integer mode of size bytes.
113 * @param size the size
115 static ir_mode *get_smode(unsigned size)
117 static ir_mode *s_modes[16 + 1] = {0, };
120 if (size <= 0 || size > 16)
129 snprintf(name, sizeof(name), "i%u", bits);
130 res = new_ir_mode(name, irms_int_number, bits, 1, irma_twos_complement,
131 bits <= machine_size ? machine_size : bits );
139 * Return the unsigned integer mode of size bytes.
141 * @param size the size
143 static ir_mode *get_umode(unsigned size)
145 static ir_mode *u_modes[16 + 1] = {0, };
148 if (size <= 0 || size > 16)
157 snprintf(name, sizeof(name), "u%u", bits);
158 res = new_ir_mode(name, irms_int_number, bits, 0, irma_twos_complement,
159 bits <= machine_size ? machine_size : bits );
167 * Return the pointer mode of size bytes.
169 * @param size the size
171 static ir_mode *get_ptrmode(unsigned size, char *name)
173 static ir_mode *p_modes[16 + 1] = {0, };
176 if (size <= 0 || size > 16)
186 snprintf(buf, sizeof(buf), "p%u", bits);
189 res = new_ir_mode(name, irms_reference, bits, 0, irma_twos_complement,
190 bits <= machine_size ? machine_size : bits);
194 set_reference_mode_signed_eq(res, get_smode(size));
195 set_reference_mode_unsigned_eq(res, get_umode(size));
200 static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST];
202 static ir_mode *mode_int, *mode_uint;
205 * Initialises the atomic modes depending on the machine size.
207 static void init_atomic_modes(void) {
208 unsigned int_size = machine_size < 32 ? 2 : 4;
209 unsigned long_size = machine_size < 64 ? 4 : 8;
210 unsigned llong_size = machine_size < 32 ? 4 : 8;
212 /* firm has no real void... */
213 _atomic_modes[ATOMIC_TYPE_VOID] = mode_T;
214 _atomic_modes[ATOMIC_TYPE_CHAR] = char_is_signed ? get_smode(1) : get_umode(1);
215 _atomic_modes[ATOMIC_TYPE_SCHAR] = get_smode(1);
216 _atomic_modes[ATOMIC_TYPE_UCHAR] = get_umode(1);
217 _atomic_modes[ATOMIC_TYPE_SHORT] = get_smode(2);
218 _atomic_modes[ATOMIC_TYPE_USHORT] = get_umode(2);
219 _atomic_modes[ATOMIC_TYPE_INT] = get_smode(int_size);
220 _atomic_modes[ATOMIC_TYPE_UINT] = get_umode(int_size);
221 _atomic_modes[ATOMIC_TYPE_LONG] = get_smode(long_size);
222 _atomic_modes[ATOMIC_TYPE_ULONG] = get_umode(long_size);
223 _atomic_modes[ATOMIC_TYPE_LONGLONG] = get_smode(llong_size);
224 _atomic_modes[ATOMIC_TYPE_ULONGLONG] = get_umode(llong_size);
225 _atomic_modes[ATOMIC_TYPE_FLOAT] = mode_F;
226 _atomic_modes[ATOMIC_TYPE_DOUBLE] = mode_D;
227 _atomic_modes[ATOMIC_TYPE_LONG_DOUBLE] = mode_E;
228 _atomic_modes[ATOMIC_TYPE_BOOL] = get_umode(int_size);
230 #ifdef PROVIDE_COMPLEX
231 _atomic_modes[ATOMIC_TYPE_BOOL] = _atomic_modes[ATOMIC_TYPE_INT];
232 _atomic_modes[ATOMIC_TYPE_FLOAT_IMAGINARY] = _atomic_modes[ATOMIC_TYPE_FLOAT];
233 _atomic_modes[ATOMIC_TYPE_DOUBLE_IMAGINARY] = _atomic_modes[ATOMIC_TYPE_DOUBLE];
234 _atomic_modes[ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY] = _atomic_modes[ATOMIC_TYPE_LONG_DOUBLE];
237 /* Hmm, pointers should be machine size */
238 set_modeP_data(get_ptrmode(machine_size >> 3, NULL));
239 set_modeP_code(get_ptrmode(machine_size >> 3, NULL));
241 mode_int = _atomic_modes[ATOMIC_TYPE_INT];
242 mode_uint = _atomic_modes[ATOMIC_TYPE_UINT];
245 static ir_mode *get_atomic_mode(const atomic_type_t* atomic_type)
248 if ((unsigned)atomic_type->atype < (unsigned)ATOMIC_TYPE_LAST)
249 res = _atomic_modes[(unsigned)atomic_type->atype];
251 panic("Encountered unknown atomic type");
255 static unsigned get_type_size(type_t *type);
257 static unsigned get_atomic_type_size(const atomic_type_t *type)
259 switch(type->atype) {
260 case ATOMIC_TYPE_CHAR:
261 case ATOMIC_TYPE_SCHAR:
262 case ATOMIC_TYPE_UCHAR:
265 case ATOMIC_TYPE_SHORT:
266 case ATOMIC_TYPE_USHORT:
269 case ATOMIC_TYPE_BOOL:
270 case ATOMIC_TYPE_INT:
271 case ATOMIC_TYPE_UINT:
272 return machine_size >> 3;
274 case ATOMIC_TYPE_LONG:
275 case ATOMIC_TYPE_ULONG:
276 return machine_size > 16 ? machine_size >> 3 : 4;
278 case ATOMIC_TYPE_LONGLONG:
279 case ATOMIC_TYPE_ULONGLONG:
280 return machine_size > 16 ? 8 : 4;
282 case ATOMIC_TYPE_FLOAT:
285 case ATOMIC_TYPE_DOUBLE:
288 case ATOMIC_TYPE_LONG_DOUBLE:
291 case ATOMIC_TYPE_VOID:
294 case ATOMIC_TYPE_INVALID:
295 case ATOMIC_TYPE_LAST:
298 panic("Trying to determine size of invalid atomic type");
301 static unsigned get_compound_type_size(compound_type_t *type)
303 ir_type *irtype = get_ir_type((type_t*) type);
304 return get_type_size_bytes(irtype);
307 static unsigned get_array_type_size(array_type_t *type)
309 ir_type *irtype = get_ir_type((type_t*) type);
310 return get_type_size_bytes(irtype);
314 static unsigned get_type_size(type_t *type)
316 type = skip_typeref(type);
320 return get_atomic_type_size(&type->atomic);
322 return get_mode_size_bytes(mode_int);
323 case TYPE_COMPOUND_UNION:
324 case TYPE_COMPOUND_STRUCT:
325 return get_compound_type_size(&type->compound);
327 /* just a pointer to the function */
328 return get_mode_size_bytes(mode_P_code);
330 return get_mode_size_bytes(mode_P_data);
332 return get_array_type_size(&type->array);
334 return get_type_size(type->builtin.real_type);
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->atype == ATOMIC_TYPE_LONG_DOUBLE) {
367 set_type_alignment_bytes(irtype, 4);
373 static ir_type *create_method_type(const function_type_t *function_type)
375 type_t *return_type = function_type->return_type;
377 ident *id = unique_ident("functiontype");
378 int n_parameters = count_parameters(function_type);
379 int n_results = return_type == type_void ? 0 : 1;
380 ir_type *irtype = new_type_method(id, n_parameters, n_results);
382 if(return_type != type_void) {
383 ir_type *restype = get_ir_type(return_type);
384 set_method_res_type(irtype, 0, restype);
387 function_parameter_t *parameter = function_type->parameters;
389 for( ; parameter != NULL; parameter = parameter->next) {
390 ir_type *p_irtype = get_ir_type(parameter->type);
391 set_method_param_type(irtype, n, p_irtype);
395 if(function_type->variadic || function_type->unspecified_parameters) {
396 set_method_variadicity(irtype, variadicity_variadic);
402 static ir_type *create_pointer_type(pointer_type_t *type)
404 type_t *points_to = type->points_to;
405 ir_type *ir_points_to;
406 /* Avoid endless recursion if the points_to type contains this poiner type
407 * again (might be a struct). We therefore first create a void* pointer
408 * and then set the real points_to type
410 ir_type *ir_type = new_type_pointer(unique_ident("pointer"),
411 ir_type_void, mode_P_data);
412 type->type.firm_type = ir_type;
414 ir_points_to = get_ir_type(points_to);
415 set_pointer_points_to_type(ir_type, ir_points_to);
420 static ir_type *create_array_type(array_type_t *type)
422 type_t *element_type = type->element_type;
423 ir_type *ir_element_type = get_ir_type(element_type);
425 ident *id = unique_ident("array");
426 ir_type *ir_type = new_type_array(id, 1, ir_element_type);
428 if(type->size != NULL) {
429 int n_elements = fold_constant(type->size);
431 set_array_bounds_int(ir_type, 0, 0, n_elements);
433 size_t elemsize = get_type_size_bytes(ir_element_type);
434 int align = get_type_alignment_bytes(ir_element_type);
435 if(elemsize % align > 0) {
436 elemsize += align - (elemsize % align);
438 set_type_size_bytes(ir_type, n_elements * elemsize);
439 set_type_alignment_bytes(ir_type, align);
440 set_type_state(ir_type, layout_fixed);
442 set_array_lower_bound_int(ir_type, 0, 0);
448 #define INVALID_TYPE ((ir_type_ptr)-1)
450 static ir_type *create_struct_type(compound_type_t *type)
452 symbol_t *symbol = type->declaration->symbol;
455 id = unique_ident(symbol->string);
457 id = unique_ident("__anonymous_struct");
459 ir_type *ir_type = new_type_struct(id);
461 type->type.firm_type = ir_type;
465 declaration_t *entry = type->declaration->context.declarations;
466 for( ; entry != NULL; entry = entry->next) {
467 if(entry->namespc != NAMESPACE_NORMAL)
470 ident *ident = new_id_from_str(entry->symbol->string);
471 ir_type_ptr entry_ir_type = get_ir_type(entry->type);
473 int entry_size = get_type_size_bytes(entry_ir_type);
474 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
475 int misalign = offset % entry_alignment;
477 offset += entry_alignment - misalign;
479 dbg_info *const dbgi = get_dbg_info(&entry->source_position);
480 ir_entity *const entity = new_d_entity(ir_type, ident, entry_ir_type, dbgi);
481 set_entity_offset(entity, offset);
482 add_struct_member(ir_type, entity);
483 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
484 entry->v.entity = entity;
486 offset += entry_size;
487 if(entry_alignment > align_all) {
488 if(entry_alignment % align_all != 0) {
489 panic("Uneven alignments not supported yet");
491 align_all = entry_alignment;
495 int misalign = offset % align_all;
497 set_type_alignment_bytes(ir_type, align_all);
498 set_type_size_bytes(ir_type, offset);
499 set_type_state(ir_type, layout_fixed);
504 static ir_type *create_union_type(compound_type_t *type)
506 declaration_t *declaration = type->declaration;
507 symbol_t *symbol = declaration->symbol;
510 id = unique_ident(symbol->string);
512 id = unique_ident("__anonymous_union");
514 ir_type *ir_type = new_type_union(id);
516 type->type.firm_type = ir_type;
520 declaration_t *entry = declaration->context.declarations;
521 for( ; entry != NULL; entry = entry->next) {
522 if(entry->namespc != NAMESPACE_NORMAL)
525 ident *ident = new_id_from_str(entry->symbol->string);
526 ir_type_ptr entry_ir_type = get_ir_type(entry->type);
528 int entry_size = get_type_size_bytes(entry_ir_type);
529 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
531 dbg_info *const dbgi = get_dbg_info(&entry->source_position);
532 ir_entity *const entity = new_d_entity(ir_type, ident, entry_ir_type, dbgi);
533 add_union_member(ir_type, entity);
534 set_entity_offset(entity, 0);
535 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
536 entry->v.entity = entity;
538 if(entry_size > size) {
541 if(entry_alignment > align_all) {
542 if(entry_alignment % align_all != 0) {
543 panic("Uneven alignments not supported yet");
545 align_all = entry_alignment;
549 set_type_alignment_bytes(ir_type, align_all);
550 set_type_size_bytes(ir_type, size);
551 set_type_state(ir_type, layout_fixed);
556 static ir_node *expression_to_firm(const expression_t *expression);
557 static inline ir_mode *get_ir_mode(type_t *type);
559 static ir_type *create_enum_type(enum_type_t *const type)
561 type->type.firm_type = ir_type_int;
563 ir_mode *const mode = get_ir_mode((type_t*) type);
564 tarval *const one = get_mode_one(mode);
565 tarval * tv_next = get_tarval_null(mode);
567 declaration_t *declaration = type->declaration->next;
568 for (; declaration != NULL; declaration = declaration->next) {
569 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
572 declaration->declaration_type = DECLARATION_TYPE_ENUM_ENTRY;
574 expression_t *const init = declaration->init.enum_value;
576 ir_node *const cnst = expression_to_firm(init);
577 if (!is_Const(cnst)) {
578 panic("couldn't fold constant");
580 tv_next = get_Const_tarval(cnst);
582 declaration->v.enum_val = tv_next;
583 tv_next = tarval_add(tv_next, one);
589 static ir_type *get_ir_type(type_t *type)
591 assert(type != NULL);
593 type = skip_typeref(type);
595 if(type->base.firm_type != NULL) {
596 assert(type->base.firm_type != INVALID_TYPE);
597 return type->base.firm_type;
600 ir_type *firm_type = NULL;
603 firm_type = create_atomic_type(&type->atomic);
606 firm_type = create_method_type(&type->function);
609 firm_type = create_pointer_type(&type->pointer);
612 firm_type = create_array_type(&type->array);
614 case TYPE_COMPOUND_STRUCT:
615 firm_type = create_struct_type(&type->compound);
617 case TYPE_COMPOUND_UNION:
618 firm_type = create_union_type(&type->compound);
621 firm_type = create_enum_type(&type->enumt);
624 firm_type = get_ir_type(type->builtin.real_type);
631 if(firm_type == NULL)
632 panic("unknown type found");
634 type->base.firm_type = firm_type;
638 static inline ir_mode *get_ir_mode(type_t *type)
640 ir_type *irtype = get_ir_type(type);
642 /* firm doesn't report a mode for arrays somehow... */
643 if(is_Array_type(irtype)) {
647 ir_mode *mode = get_type_mode(irtype);
648 assert(mode != NULL);
652 static ident *predef_idents[rts_max];
654 /** Names of the runtime functions. */
655 static const struct {
656 int id; /**< the rts id */
657 int n_res; /**< number of return values */
658 const char *name; /**< the name of the rts function */
659 int n_params; /**< number of parameters */
660 unsigned flags; /**< language flags */
662 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
663 { rts_abort, 0, "abort", 0, _C89 },
664 { rts_abs, 1, "abs", 1, _C89 },
665 { rts_labs, 1, "labs", 1, _C89 },
666 { rts_llabs, 1, "llabs", 1, _C99 },
667 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
669 { rts_fabs, 1, "fabs", 1, _C89 },
670 { rts_sqrt, 1, "sqrt", 1, _C89 },
671 { rts_cbrt, 1, "cbrt", 1, _C99 },
672 { rts_exp, 1, "exp", 1, _C89 },
673 { rts_exp2, 1, "exp2", 1, _C89 },
674 { rts_exp10, 1, "exp10", 1, _GNUC },
675 { rts_log, 1, "log", 1, _C89 },
676 { rts_log2, 1, "log2", 1, _C89 },
677 { rts_log10, 1, "log10", 1, _C89 },
678 { rts_pow, 1, "pow", 2, _C89 },
679 { rts_sin, 1, "sin", 1, _C89 },
680 { rts_cos, 1, "cos", 1, _C89 },
681 { rts_tan, 1, "tan", 1, _C89 },
682 { rts_asin, 1, "asin", 1, _C89 },
683 { rts_acos, 1, "acos", 1, _C89 },
684 { rts_atan, 1, "atan", 1, _C89 },
685 { rts_sinh, 1, "sinh", 1, _C89 },
686 { rts_cosh, 1, "cosh", 1, _C89 },
687 { rts_tanh, 1, "tanh", 1, _C89 },
689 { rts_fabsf, 1, "fabsf", 1, _C99 },
690 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
691 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
692 { rts_expf, 1, "expf", 1, _C99 },
693 { rts_exp2f, 1, "exp2f", 1, _C99 },
694 { rts_exp10f, 1, "exp10f", 1, _GNUC },
695 { rts_logf, 1, "logf", 1, _C99 },
696 { rts_log2f, 1, "log2f", 1, _C99 },
697 { rts_log10f, 1, "log10f", 1, _C99 },
698 { rts_powf, 1, "powf", 2, _C99 },
699 { rts_sinf, 1, "sinf", 1, _C99 },
700 { rts_cosf, 1, "cosf", 1, _C99 },
701 { rts_tanf, 1, "tanf", 1, _C99 },
702 { rts_asinf, 1, "asinf", 1, _C99 },
703 { rts_acosf, 1, "acosf", 1, _C99 },
704 { rts_atanf, 1, "atanf", 1, _C99 },
705 { rts_sinhf, 1, "sinhf", 1, _C99 },
706 { rts_coshf, 1, "coshf", 1, _C99 },
707 { rts_tanhf, 1, "tanhf", 1, _C99 },
709 { rts_fabsl, 1, "fabsl", 1, _C99 },
710 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
711 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
712 { rts_expl, 1, "expl", 1, _C99 },
713 { rts_exp2l, 1, "exp2l", 1, _C99 },
714 { rts_exp10l, 1, "exp10l", 1, _GNUC },
715 { rts_logl, 1, "logl", 1, _C99 },
716 { rts_log2l, 1, "log2l", 1, _C99 },
717 { rts_log10l, 1, "log10l", 1, _C99 },
718 { rts_powl, 1, "powl", 2, _C99 },
719 { rts_sinl, 1, "sinl", 1, _C99 },
720 { rts_cosl, 1, "cosl", 1, _C99 },
721 { rts_tanl, 1, "tanl", 1, _C99 },
722 { rts_asinl, 1, "asinl", 1, _C99 },
723 { rts_acosl, 1, "acosl", 1, _C99 },
724 { rts_atanl, 1, "atanl", 1, _C99 },
725 { rts_sinhl, 1, "sinhl", 1, _C99 },
726 { rts_coshl, 1, "coshl", 1, _C99 },
727 { rts_tanhl, 1, "tanhl", 1, _C99 },
729 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
730 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
731 { rts_strcmp, 1, "strcmp", 2, _C89 },
732 { rts_strncmp, 1, "strncmp", 3, _C89 }
735 static ir_entity* get_function_entity(declaration_t *declaration)
737 if(declaration->declaration_type == DECLARATION_TYPE_FUNCTION)
738 return declaration->v.entity;
739 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
741 symbol_t *symbol = declaration->symbol;
742 ident *id = new_id_from_str(symbol->string);
744 ir_type *global_type = get_glob_type();
745 ir_type *ir_type_method = get_ir_type(declaration->type);
746 assert(is_Method_type(ir_type_method));
748 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
749 ir_entity *const entity = new_d_entity(global_type, id, ir_type_method, dbgi);
750 set_entity_ld_ident(entity, id);
751 if(declaration->storage_class == STORAGE_CLASS_STATIC
752 || declaration->is_inline) {
753 set_entity_visibility(entity, visibility_local);
754 } else if(declaration->init.statement != NULL) {
755 set_entity_visibility(entity, visibility_external_visible);
757 set_entity_visibility(entity, visibility_external_allocated);
759 /* We should check for file scope here, but as long as we compile C only
760 this is not needed. */
761 int n_params = get_method_n_params(ir_type_method);
762 int n_res = get_method_n_ress(ir_type_method);
763 ir_ident_ptr id = get_entity_ident(entity);
766 if (n_params == 0 && n_res == 0 && id == predef_idents[rts_abort]) {
767 /* found abort(), store for later */
771 if (! firm_opt.freestanding) {
772 /* check for a known runtime function */
773 for (i = 0; i < rts_max; ++i) {
774 /* ignore those rts functions not necessary needed for current mode */
775 if ((c_mode & rts_data[i].flags) == 0)
777 if (n_params == rts_data[i].n_params && n_res == rts_data[i].n_res &&
778 id == predef_idents[rts_data[i].id])
779 rts_entities[rts_data[i].id] = entity;
784 set_entity_allocation(entity, allocation_static);
786 declaration->declaration_type = DECLARATION_TYPE_FUNCTION;
787 declaration->v.entity = entity;
792 static ir_node *const_to_firm(const const_expression_t *cnst)
794 dbg_info *dbgi = get_dbg_info(&cnst->expression.source_position);
795 ir_mode *mode = get_ir_mode(cnst->expression.datatype);
800 if(mode_is_float(mode)) {
801 tv = new_tarval_from_double(cnst->v.float_value, mode);
803 if(mode_is_signed(mode)) {
804 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
806 len = snprintf(buf, sizeof(buf), "%llu",
807 (unsigned long long) cnst->v.int_value);
809 tv = new_tarval_from_str(buf, len, mode);
812 return new_d_Const(dbgi, mode, tv);
815 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode, ir_entity *entity)
817 assert(entity != NULL);
818 union symconst_symbol sym;
819 sym.entity_p = entity;
820 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
823 static ir_node *string_to_firm(const source_position_t *const src_pos,
824 const char *const id_prefix,
825 const char *const string)
827 ir_type *const global_type = get_glob_type();
828 ir_type *const type = new_type_array(unique_ident("strtype"), 1,
831 ident *const id = unique_ident(id_prefix);
832 dbg_info *const dbgi = get_dbg_info(src_pos);
833 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
834 set_entity_ld_ident(entity, id);
835 set_entity_variability(entity, variability_constant);
836 set_entity_allocation(entity, allocation_static);
838 ir_type *const elem_type = ir_type_const_char;
839 ir_mode *const mode = get_type_mode(elem_type);
841 const size_t slen = strlen(string) + 1;
843 set_array_lower_bound_int(type, 0, 0);
844 set_array_upper_bound_int(type, 0, slen);
845 set_type_size_bytes(type, slen);
846 set_type_state(type, layout_fixed);
848 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
849 for(size_t i = 0; i < slen; ++i) {
850 tvs[i] = new_tarval_from_long(string[i], mode);
853 set_array_entity_values(entity, tvs, slen);
856 return create_symconst(dbgi, mode_P_data, entity);
859 static ir_node *string_literal_to_firm(
860 const string_literal_expression_t* literal)
862 return string_to_firm(&literal->expression.source_position, "Lstr",
866 static ir_node *wide_string_literal_to_firm(
867 const wide_string_literal_expression_t* const literal)
869 ir_type *const global_type = get_glob_type();
870 ir_type *const elem_type = ir_type_wchar_t;
871 ir_type *const type = new_type_array(unique_ident("strtype"), 1,
874 ident *const id = unique_ident("Lstr");
875 dbg_info *const dbgi = get_dbg_info(&literal->expression.source_position);
876 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
877 set_entity_ld_ident(entity, id);
878 set_entity_variability(entity, variability_constant);
879 set_entity_allocation(entity, allocation_static);
881 ir_mode *const mode = get_type_mode(elem_type);
883 const wchar_rep_t *const string = literal->value.begin;
884 const size_t slen = literal->value.size;
886 set_array_lower_bound_int(type, 0, 0);
887 set_array_upper_bound_int(type, 0, slen);
888 set_type_size_bytes(type, slen);
889 set_type_state(type, layout_fixed);
891 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
892 for(size_t i = 0; i < slen; ++i) {
893 tvs[i] = new_tarval_from_long(string[i], mode);
896 set_array_entity_values(entity, tvs, slen);
899 return create_symconst(dbgi, mode_P_data, entity);
902 static ir_node *deref_address(ir_type *const irtype, ir_node *const addr,
903 dbg_info *const dbgi)
905 if(is_compound_type(irtype) || is_Array_type(irtype)) {
909 ir_mode *const mode = get_type_mode(irtype);
910 ir_node *const memory = get_store();
911 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
912 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
913 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
918 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
920 ir_mode *mode = get_irn_mode(node);
922 if(!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
924 if(!mode_is_float(mode))
927 /* check if there is already a Conv */
928 if (get_irn_op(node) == op_Conv) {
929 /* convert it into a strict Conv */
930 set_Conv_strict(node, 1);
934 /* otherwise create a new one */
935 return new_d_strictConv(dbgi, node, mode);
938 static ir_node *get_global_var_address(dbg_info *const dbgi,
939 const declaration_t *const decl)
941 assert(decl->declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
943 ir_entity *const entity = decl->v.entity;
944 switch ((storage_class_tag_t)decl->storage_class) {
945 case STORAGE_CLASS_THREAD:
946 case STORAGE_CLASS_THREAD_EXTERN:
947 case STORAGE_CLASS_THREAD_STATIC: {
948 ir_node *const no_mem = new_NoMem();
949 ir_node *const tls = get_irg_tls(current_ir_graph);
950 return new_d_simpleSel(dbgi, no_mem, tls, entity);
954 return create_symconst(dbgi, mode_P_data, entity);
958 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
960 dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
961 declaration_t *declaration = ref->declaration;
962 type_t *type = skip_typeref(declaration->type);
964 switch((declaration_type_t) declaration->declaration_type) {
965 case DECLARATION_TYPE_UNKNOWN:
966 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) {
972 case DECLARATION_TYPE_ENUM_ENTRY: {
973 ir_mode *const mode = get_ir_mode(type);
974 return new_Const(mode, declaration->v.enum_val);
977 case DECLARATION_TYPE_LOCAL_VARIABLE: {
978 ir_mode *const mode = get_ir_mode(type);
979 return get_value(declaration->v.value_number, mode);
981 case DECLARATION_TYPE_FUNCTION: {
982 ir_mode *const mode = get_ir_mode(type);
983 return create_symconst(dbgi, mode, declaration->v.entity);
985 case DECLARATION_TYPE_GLOBAL_VARIABLE: {
986 ir_node *const addr = get_global_var_address(dbgi, declaration);
987 ir_type *const irtype = get_entity_type(declaration->v.entity);
988 return deref_address(irtype, addr, dbgi);
991 case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: {
992 ir_entity *entity = declaration->v.entity;
993 ir_node *frame = get_irg_frame(current_ir_graph);
994 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
995 ir_type *irtype = get_entity_type(entity);
996 return deref_address(irtype, sel, dbgi);
999 case DECLARATION_TYPE_COMPOUND_MEMBER:
1000 case DECLARATION_TYPE_LABEL_BLOCK:
1001 panic("not implemented reference type");
1004 panic("reference to declaration with unknown type found");
1007 static ir_node *reference_addr(const reference_expression_t *ref)
1009 dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
1010 declaration_t *declaration = ref->declaration;
1012 switch((declaration_type_t) declaration->declaration_type) {
1013 case DECLARATION_TYPE_UNKNOWN:
1015 case DECLARATION_TYPE_LOCAL_VARIABLE:
1016 panic("local variable without entity has no address");
1017 case DECLARATION_TYPE_FUNCTION: {
1018 type_t *const type = skip_typeref(ref->expression.datatype);
1019 ir_mode *const mode = get_ir_mode(type);
1020 return create_symconst(dbgi, mode, declaration->v.entity);
1022 case DECLARATION_TYPE_GLOBAL_VARIABLE: {
1023 ir_node *const addr = get_global_var_address(dbgi, declaration);
1026 case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: {
1027 ir_entity *entity = declaration->v.entity;
1028 ir_node *frame = get_irg_frame(current_ir_graph);
1029 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1034 case DECLARATION_TYPE_ENUM_ENTRY:
1035 panic("trying to reference enum entry");
1037 case DECLARATION_TYPE_COMPOUND_MEMBER:
1038 case DECLARATION_TYPE_LABEL_BLOCK:
1039 panic("not implemented reference type");
1042 panic("reference to declaration with unknown type found");
1045 static ir_node *process_builtin_call(const call_expression_t *call)
1047 dbg_info *dbgi = get_dbg_info(&call->expression.source_position);
1049 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1050 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1052 type_t *type = skip_typeref(builtin->expression.datatype);
1053 assert(is_type_pointer(type));
1055 type_t *function_type = skip_typeref(type->pointer.points_to);
1056 symbol_t *symbol = builtin->symbol;
1058 switch(symbol->ID) {
1059 case T___builtin_alloca: {
1060 if(call->arguments == NULL || call->arguments->next != NULL) {
1061 panic("invalid number of parameters on __builtin_alloca");
1063 expression_t *argument = call->arguments->expression;
1064 ir_node *size = expression_to_firm(argument);
1066 ir_node *store = get_store();
1067 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1069 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1071 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1075 case T___builtin_nan:
1076 case T___builtin_nanf:
1077 case T___builtin_nand: {
1078 /* Ignore string for now... */
1079 assert(is_type_function(function_type));
1080 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1081 tarval *tv = get_mode_NAN(mode);
1082 ir_node *res = new_d_Const(dbgi, mode, tv);
1085 case T___builtin_va_end:
1088 panic("Unsupported builtin found\n");
1092 static ir_node *call_expression_to_firm(const call_expression_t *call)
1094 assert(get_cur_block() != NULL);
1096 expression_t *function = call->function;
1097 if(function->kind == EXPR_BUILTIN_SYMBOL) {
1098 return process_builtin_call(call);
1100 ir_node *callee = expression_to_firm(function);
1102 type_t *type = skip_typeref(function->base.datatype);
1103 assert(is_type_pointer(type));
1104 pointer_type_t *pointer_type = &type->pointer;
1105 type_t *points_to = skip_typeref(pointer_type->points_to);
1106 assert(is_type_function(points_to));
1107 function_type_t *function_type = &points_to->function;
1109 int n_parameters = 0;
1110 call_argument_t *argument = call->arguments;
1111 for( ; argument != NULL; argument = argument->next) {
1115 dbg_info *dbgi = get_dbg_info(&call->expression.source_position);
1117 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1118 ir_type *new_method_type = NULL;
1119 if(function_type->variadic || function_type->unspecified_parameters) {
1120 /* we need to construct a new method type matching the call
1122 int n_res = get_method_n_ress(ir_method_type);
1123 new_method_type = new_type_method(unique_ident("calltype"),
1124 n_parameters, n_res);
1125 set_method_calling_convention(new_method_type,
1126 get_method_calling_convention(ir_method_type));
1127 set_method_additional_properties(new_method_type,
1128 get_method_additional_properties(ir_method_type));
1130 for(int i = 0; i < n_res; ++i) {
1131 set_method_res_type(new_method_type, i,
1132 get_method_res_type(ir_method_type, i));
1135 ir_node *in[n_parameters];
1137 argument = call->arguments;
1139 for( ; argument != NULL; argument = argument->next) {
1140 expression_t *expression = argument->expression;
1141 ir_node *arg_node = expression_to_firm(expression);
1143 arg_node = do_strict_conv(dbgi, arg_node);
1146 if(new_method_type != NULL) {
1147 ir_type *irtype = get_ir_type(expression->base.datatype);
1148 set_method_param_type(new_method_type, n, irtype);
1153 assert(n == n_parameters);
1155 if(new_method_type != NULL)
1156 ir_method_type = new_method_type;
1158 ir_node *store = get_store();
1159 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1161 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1164 type_t *return_type = skip_typeref(function_type->return_type);
1165 ir_node *result = NULL;
1167 if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1169 if(is_type_scalar(return_type)) {
1170 mode = get_ir_mode(return_type);
1174 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1175 result = new_d_Proj(dbgi, resproj, mode, 0);
1181 static void statement_to_firm(statement_t *statement);
1182 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1184 static ir_node *expression_to_addr(const expression_t *expression);
1185 static void create_condition_evaluation(const expression_t *expression,
1186 ir_node *true_block,
1187 ir_node *false_block);
1189 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1192 value = do_strict_conv(dbgi, value);
1194 ir_node *memory = get_store();
1196 if(is_type_scalar(type)) {
1197 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1198 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1199 set_store(store_mem);
1201 ir_type *irtype = get_ir_type(type);
1202 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1203 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1204 set_store(copyb_mem);
1208 static void set_value_for_expression(const expression_t *expression,
1211 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1212 value = do_strict_conv(dbgi, value);
1214 if(expression->kind == EXPR_REFERENCE) {
1215 const reference_expression_t *ref = &expression->reference;
1217 declaration_t *declaration = ref->declaration;
1218 assert(declaration->declaration_type != DECLARATION_TYPE_UNKNOWN);
1219 if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
1220 set_value(declaration->v.value_number, value);
1225 ir_node *addr = expression_to_addr(expression);
1226 type_t *type = skip_typeref(expression->base.datatype);
1227 assign_value(dbgi, addr, type, value);
1230 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1232 ir_mode *value_mode = get_irn_mode(value);
1234 if (value_mode == dest_mode || is_Bad(value))
1237 if(dest_mode == mode_b) {
1238 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1239 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1240 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1244 return new_d_Conv(dbgi, value, dest_mode);
1247 static ir_node *create_incdec(const unary_expression_t *expression)
1249 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1250 type_t *type = skip_typeref(expression->expression.datatype);
1251 ir_mode *mode = get_ir_mode(type);
1252 expression_t *value = expression->value;
1254 ir_node *value_node = expression_to_firm(value);
1257 if(is_type_pointer(type)) {
1258 pointer_type_t *pointer_type = &type->pointer;
1259 unsigned elem_size = get_type_size(pointer_type->points_to);
1260 offset = new_Const_long(mode_int, elem_size);
1262 assert(is_type_arithmetic(type));
1263 offset = new_Const(mode, get_mode_one(mode));
1266 switch(expression->expression.kind) {
1267 case EXPR_UNARY_POSTFIX_INCREMENT: {
1268 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1269 set_value_for_expression(value, new_value);
1272 case EXPR_UNARY_POSTFIX_DECREMENT: {
1273 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1274 set_value_for_expression(value, new_value);
1277 case EXPR_UNARY_PREFIX_INCREMENT: {
1278 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1279 set_value_for_expression(value, new_value);
1282 case EXPR_UNARY_PREFIX_DECREMENT: {
1283 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1284 set_value_for_expression(value, new_value);
1288 panic("no incdec expr in create_incdec");
1293 static bool is_local_variable(expression_t *expression)
1295 if (expression->kind != EXPR_REFERENCE)
1297 reference_expression_t *ref_expr = &expression->reference;
1298 declaration_t *declaration = ref_expr->declaration;
1299 return declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE;
1302 static pn_Cmp get_pnc(const expression_kind_t kind)
1305 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1306 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1307 case EXPR_BINARY_NOTEQUAL: return pn_Cmp_Ne;
1308 case EXPR_BINARY_ISLESS:
1309 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
1310 case EXPR_BINARY_ISLESSEQUAL:
1311 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
1312 case EXPR_BINARY_ISGREATER:
1313 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
1314 case EXPR_BINARY_ISGREATEREQUAL:
1315 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
1316 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
1321 panic("trying to get pn_Cmp from non-comparison binexpr type");
1325 * Handle the assume optimizer hint: check if a Confirm
1326 * node can be created.
1328 * @param dbi debug info
1329 * @param expr the IL assume expression
1331 * we support here only some simple cases:
1336 static ir_node *handle_assume_compare(dbg_info *dbi, const binary_expression_t *expression)
1338 expression_t *op1 = expression->left;
1339 expression_t *op2 = expression->right;
1340 declaration_t *var2, *var = NULL;
1341 ir_node *res = NULL;
1344 cmp_val = get_pnc(expression->expression.kind);
1346 if (is_local_variable(op1) && is_local_variable(op2)) {
1347 var = op1->reference.declaration;
1348 var2 = op2->reference.declaration;
1350 type_t *const type = skip_typeref(var->type);
1351 ir_mode *const mode = get_ir_mode(type);
1353 ir_node *const irn1 = get_value(var->v.value_number, mode);
1354 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1356 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1357 set_value(var2->v.value_number, res);
1359 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
1360 set_value(var->v.value_number, res);
1366 if (is_local_variable(op1) && is_constant_expression(op2)) {
1367 var = op1->reference.declaration;
1369 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
1370 cmp_val = get_inversed_pnc(cmp_val);
1371 var = op2->reference.declaration;
1376 type_t *const type = skip_typeref(var->type);
1377 ir_mode *const mode = get_ir_mode(type);
1379 res = get_value(var->v.value_number, mode);
1380 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
1381 set_value(var->v.value_number, res);
1387 * Handle the assume optimizer hint.
1389 * @param dbi debug info
1390 * @param expr the IL assume expression
1392 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
1393 switch(expression->kind) {
1394 case EXPR_BINARY_EQUAL:
1395 case EXPR_BINARY_NOTEQUAL:
1396 case EXPR_BINARY_LESS:
1397 case EXPR_BINARY_LESSEQUAL:
1398 case EXPR_BINARY_GREATER:
1399 case EXPR_BINARY_GREATEREQUAL:
1400 return handle_assume_compare(dbi, &expression->binary);
1406 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
1408 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1409 type_t *type = skip_typeref(expression->expression.datatype);
1411 if(expression->expression.kind == EXPR_UNARY_TAKE_ADDRESS)
1412 return expression_to_addr(expression->value);
1414 const expression_t *value = expression->value;
1416 switch(expression->expression.kind) {
1417 case EXPR_UNARY_NEGATE: {
1418 ir_node *value_node = expression_to_firm(value);
1419 ir_mode *mode = get_ir_mode(type);
1420 return new_d_Minus(dbgi, value_node, mode);
1422 case EXPR_UNARY_PLUS:
1423 return expression_to_firm(value);
1424 case EXPR_UNARY_BITWISE_NEGATE: {
1425 ir_node *value_node = expression_to_firm(value);
1426 ir_mode *mode = get_ir_mode(type);
1427 return new_d_Not(dbgi, value_node, mode);
1429 case EXPR_UNARY_NOT: {
1430 ir_node *value_node = expression_to_firm(value);
1431 ir_mode *mode = get_ir_mode(type);
1432 if(get_irn_mode(value_node) != mode_b) {
1433 value_node = create_conv(dbgi, value_node, mode_b);
1435 value_node = new_d_Not(dbgi, value_node, mode_b);
1436 if(mode != mode_b) {
1437 value_node = create_conv(dbgi, value_node, mode);
1441 case EXPR_UNARY_DEREFERENCE: {
1442 ir_node *value_node = expression_to_firm(value);
1443 type_t *value_type = skip_typeref(value->base.datatype);
1444 ir_type *irtype = get_ir_type(value_type);
1445 assert(is_Pointer_type(irtype));
1446 ir_type *points_to = get_pointer_points_to_type(irtype);
1447 return deref_address(points_to, value_node, dbgi);
1449 case EXPR_UNARY_POSTFIX_INCREMENT:
1450 case EXPR_UNARY_POSTFIX_DECREMENT:
1451 case EXPR_UNARY_PREFIX_INCREMENT:
1452 case EXPR_UNARY_PREFIX_DECREMENT:
1453 return create_incdec(expression);
1454 case EXPR_UNARY_CAST: {
1455 ir_node *value_node = expression_to_firm(value);
1456 ir_mode *mode = get_ir_mode(type);
1457 ir_node *node = create_conv(dbgi, value_node, mode);
1458 node = do_strict_conv(dbgi, node);
1461 case EXPR_UNARY_CAST_IMPLICIT: {
1462 ir_node *value_node = expression_to_firm(value);
1463 ir_mode *mode = get_ir_mode(type);
1464 return create_conv(dbgi, value_node, mode);
1466 case EXPR_UNARY_ASSUME:
1467 if(firm_opt.confirm)
1468 return handle_assume(dbgi, value);
1475 panic("invalid UNEXPR type found");
1478 static ir_node *create_lazy_op(const binary_expression_t *expression)
1480 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1481 type_t *type = expression->expression.datatype;
1482 ir_mode *mode = get_ir_mode(type);
1484 if(is_constant_expression(expression->left)) {
1485 long val = fold_constant(expression->left);
1486 expression_kind_t ekind = expression->expression.kind;
1487 if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
1488 || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
1489 return expression_to_firm(expression->right);
1491 assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
1492 || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
1493 return new_Const(mode, get_mode_one(mode));
1497 ir_node *cur_block = get_cur_block();
1499 ir_node *one_block = new_immBlock();
1500 ir_node *one = new_Const(mode, get_mode_one(mode));
1501 ir_node *jmp_one = new_d_Jmp(dbgi);
1503 ir_node *zero_block = new_immBlock();
1504 ir_node *zero = new_Const(mode, get_mode_null(mode));
1505 ir_node *jmp_zero = new_d_Jmp(dbgi);
1507 set_cur_block(cur_block);
1508 create_condition_evaluation((const expression_t*) expression,
1509 one_block, zero_block);
1510 mature_immBlock(one_block);
1511 mature_immBlock(zero_block);
1513 ir_node *common_block = new_immBlock();
1514 add_immBlock_pred(common_block, jmp_one);
1515 add_immBlock_pred(common_block, jmp_zero);
1516 mature_immBlock(common_block);
1518 ir_node *in[2] = { one, zero };
1519 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1524 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
1525 ir_node *right, ir_mode *mode);
1527 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
1528 create_arithmetic_func func)
1530 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1531 ir_node *left = expression_to_firm(expression->left);
1532 ir_node *right = expression_to_firm(expression->right);
1533 type_t *type = expression->right->base.datatype;
1534 /* be careful with the modes, because in arithmetic assign nodes only
1535 * the right operand has the mode of the arithmetic already */
1536 ir_mode *mode = get_ir_mode(type);
1537 left = create_conv(dbgi, left, mode);
1538 ir_node *res = func(dbgi, left, right, mode);
1543 static ir_node *pointer_arithmetic(ir_node *const pointer,
1546 dbg_info *const dbgi,
1547 const create_arithmetic_func func)
1549 pointer_type_t *const pointer_type = &type->pointer;
1550 type_t *const points_to = pointer_type->points_to;
1551 const unsigned elem_size = get_type_size(points_to);
1553 assert(elem_size >= 1);
1554 if (elem_size > 1) {
1555 integer = create_conv(dbgi, integer, mode_int);
1556 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
1557 ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_int);
1561 ir_mode *const mode = get_ir_mode(type);
1562 return func(dbgi, pointer, integer, mode);
1565 static ir_node *create_arithmetic_assign_binop(
1566 const binary_expression_t *expression, create_arithmetic_func func)
1568 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1569 type_t *const type = skip_typeref(expression->expression.datatype);
1572 if (is_type_pointer(type)) {
1573 ir_node *const pointer = expression_to_firm(expression->left);
1574 ir_node * integer = expression_to_firm(expression->right);
1575 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
1577 value = create_arithmetic_binop(expression, func);
1580 ir_mode *const mode = get_ir_mode(type);
1581 value = create_conv(dbgi, value, mode);
1582 set_value_for_expression(expression->left, value);
1587 static ir_node *create_add(const binary_expression_t *expression)
1589 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1590 ir_node *left = expression_to_firm(expression->left);
1591 ir_node *right = expression_to_firm(expression->right);
1592 type_t *type = expression->expression.datatype;
1594 expression_t *expr_left = expression->left;
1595 expression_t *expr_right = expression->right;
1596 type_t *type_left = skip_typeref(expr_left->base.datatype);
1597 type_t *type_right = skip_typeref(expr_right->base.datatype);
1599 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1600 ir_mode *const mode = get_ir_mode(type);
1601 return new_d_Add(dbgi, left, right, mode);
1604 if (is_type_pointer(type_left)) {
1605 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
1607 assert(is_type_pointer(type_right));
1608 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
1612 static ir_node *create_sub(const binary_expression_t *expression)
1614 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1615 expression_t *const expr_left = expression->left;
1616 expression_t *const expr_right = expression->right;
1617 ir_node *const left = expression_to_firm(expr_left);
1618 ir_node *const right = expression_to_firm(expr_right);
1619 type_t *const type = expression->expression.datatype;
1620 type_t *const type_left = skip_typeref(expr_left->base.datatype);
1621 type_t *const type_right = skip_typeref(expr_right->base.datatype);
1623 if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1624 ir_mode *const mode = get_ir_mode(type);
1625 return new_d_Sub(dbgi, left, right, mode);
1626 } else if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
1627 const pointer_type_t *const ptr_type = &type_left->pointer;
1628 const unsigned elem_size = get_type_size(ptr_type->points_to);
1629 ir_mode *const mode = get_ir_mode(type);
1630 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
1631 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
1632 ir_node *const no_mem = new_NoMem();
1633 ir_node *const div = new_d_Div(dbgi, no_mem, sub, cnst, mode,
1634 op_pin_state_floats);
1635 return new_d_Proj(dbgi, div, mode, pn_Div_res);
1638 assert(is_type_pointer(type_left));
1639 return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
1642 static ir_node *create_shift(const binary_expression_t *expression)
1644 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1645 ir_node *left = expression_to_firm(expression->left);
1646 ir_node *right = expression_to_firm(expression->right);
1647 type_t *type = expression->expression.datatype;
1648 ir_mode *mode = get_ir_mode(type);
1650 /* firm always wants the shift count to be unsigned */
1651 right = create_conv(dbgi, right, mode_uint);
1655 switch(expression->expression.kind) {
1656 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
1657 case EXPR_BINARY_SHIFTLEFT:
1658 res = new_d_Shl(dbgi, left, right, mode);
1660 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
1661 case EXPR_BINARY_SHIFTRIGHT: {
1662 expression_t *expr_left = expression->left;
1663 type_t *type_left = skip_typeref(expr_left->base.datatype);
1665 if(is_type_signed(type_left)) {
1666 res = new_d_Shrs(dbgi, left, right, mode);
1668 res = new_d_Shr(dbgi, left, right, mode);
1673 panic("create shift op called for non-shift op");
1680 static ir_node *create_divmod(const binary_expression_t *expression)
1682 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1683 ir_node *left = expression_to_firm(expression->left);
1684 ir_node *right = expression_to_firm(expression->right);
1685 ir_node *pin = new_Pin(new_NoMem());
1686 /* be careful with the modes, because in arithmetic assign nodes only
1687 * the right operand has the mode of the arithmetic already */
1688 type_t *type = expression->right->base.datatype;
1689 ir_mode *mode = get_ir_mode(type);
1690 left = create_conv(dbgi, left, mode);
1694 switch (expression->expression.kind) {
1695 case EXPR_BINARY_DIV:
1696 case EXPR_BINARY_DIV_ASSIGN:
1697 if(mode_is_float(mode)) {
1698 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
1699 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
1701 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
1702 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
1706 case EXPR_BINARY_MOD:
1707 case EXPR_BINARY_MOD_ASSIGN:
1708 assert(!mode_is_float(mode));
1709 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
1710 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
1713 default: panic("unexpected binary expression type in create_divmod()");
1719 static ir_node *create_arithmetic_assign_divmod(
1720 const binary_expression_t *expression)
1722 ir_node * value = create_divmod(expression);
1723 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1724 type_t *const type = expression->expression.datatype;
1725 ir_mode *const mode = get_ir_mode(type);
1727 assert(type->kind != TYPE_POINTER);
1729 value = create_conv(dbgi, value, mode);
1730 set_value_for_expression(expression->left, value);
1735 static ir_node *create_arithmetic_assign_shift(
1736 const binary_expression_t *expression)
1738 ir_node * value = create_shift(expression);
1739 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1740 type_t *const type = expression->expression.datatype;
1741 ir_mode *const mode = get_ir_mode(type);
1743 value = create_conv(dbgi, value, mode);
1744 set_value_for_expression(expression->left, value);
1749 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
1751 expression_kind_t kind = expression->expression.kind;
1754 case EXPR_BINARY_EQUAL:
1755 case EXPR_BINARY_NOTEQUAL:
1756 case EXPR_BINARY_LESS:
1757 case EXPR_BINARY_LESSEQUAL:
1758 case EXPR_BINARY_GREATER:
1759 case EXPR_BINARY_GREATEREQUAL:
1760 case EXPR_BINARY_ISGREATER:
1761 case EXPR_BINARY_ISGREATEREQUAL:
1762 case EXPR_BINARY_ISLESS:
1763 case EXPR_BINARY_ISLESSEQUAL:
1764 case EXPR_BINARY_ISLESSGREATER:
1765 case EXPR_BINARY_ISUNORDERED: {
1766 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1767 ir_node *left = expression_to_firm(expression->left);
1768 ir_node *right = expression_to_firm(expression->right);
1769 ir_node *cmp = new_d_Cmp(dbgi, left, right);
1770 long pnc = get_pnc(kind);
1771 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
1774 case EXPR_BINARY_ASSIGN: {
1775 ir_node *right = expression_to_firm(expression->right);
1776 set_value_for_expression(expression->left, right);
1780 case EXPR_BINARY_ADD:
1781 return create_add(expression);
1782 case EXPR_BINARY_SUB:
1783 return create_sub(expression);
1784 case EXPR_BINARY_MUL:
1785 return create_arithmetic_binop(expression, new_d_Mul);
1786 case EXPR_BINARY_BITWISE_AND:
1787 return create_arithmetic_binop(expression, new_d_And);
1788 case EXPR_BINARY_BITWISE_OR:
1789 return create_arithmetic_binop(expression, new_d_Or);
1790 case EXPR_BINARY_BITWISE_XOR:
1791 return create_arithmetic_binop(expression, new_d_Eor);
1792 case EXPR_BINARY_SHIFTLEFT:
1793 case EXPR_BINARY_SHIFTRIGHT:
1794 return create_shift(expression);
1795 case EXPR_BINARY_DIV:
1796 case EXPR_BINARY_MOD:
1797 return create_divmod(expression);
1798 case EXPR_BINARY_LOGICAL_AND:
1799 case EXPR_BINARY_LOGICAL_OR:
1800 return create_lazy_op(expression);
1801 case EXPR_BINARY_COMMA:
1802 expression_to_firm(expression->left);
1803 return expression_to_firm(expression->right);
1804 case EXPR_BINARY_ADD_ASSIGN:
1805 return create_arithmetic_assign_binop(expression, new_d_Add);
1806 case EXPR_BINARY_SUB_ASSIGN:
1807 return create_arithmetic_assign_binop(expression, new_d_Sub);
1808 case EXPR_BINARY_MUL_ASSIGN:
1809 return create_arithmetic_assign_binop(expression, new_d_Mul);
1810 case EXPR_BINARY_DIV_ASSIGN:
1811 return create_arithmetic_assign_divmod(expression);
1812 case EXPR_BINARY_BITWISE_AND_ASSIGN:
1813 return create_arithmetic_assign_binop(expression, new_d_And);
1814 case EXPR_BINARY_BITWISE_OR_ASSIGN:
1815 return create_arithmetic_assign_binop(expression, new_d_Or);
1816 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
1817 return create_arithmetic_assign_binop(expression, new_d_Eor);
1818 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
1819 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
1820 return create_arithmetic_assign_shift(expression);
1821 case EXPR_BINARY_BUILTIN_EXPECT:
1822 return expression_to_firm(expression->left);
1824 panic("TODO binexpr type");
1828 static ir_node *array_access_addr(const array_access_expression_t *expression)
1830 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1831 ir_node *base_addr = expression_to_firm(expression->array_ref);
1832 ir_node *offset = expression_to_firm(expression->index);
1833 offset = create_conv(dbgi, offset, mode_uint);
1835 type_t *ref_type = skip_typeref(expression->array_ref->base.datatype);
1836 assert(is_type_pointer(ref_type));
1837 pointer_type_t *pointer_type = &ref_type->pointer;
1839 unsigned elem_size = get_type_size(pointer_type->points_to);
1840 ir_node *elem_size_const = new_Const_long(mode_uint, elem_size);
1841 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
1843 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
1848 static ir_node *array_access_to_firm(
1849 const array_access_expression_t *expression)
1851 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1852 ir_node *addr = array_access_addr(expression);
1853 type_t *type = revert_automatic_type_conversion(
1854 (const expression_t*) expression);
1855 type = skip_typeref(type);
1856 ir_type *irtype = get_ir_type(type);
1858 return deref_address(irtype, addr, dbgi);
1861 static ir_node *sizeof_to_firm(const sizeof_expression_t *expression)
1863 type_t *type = expression->type;
1865 type = expression->size_expression->base.datatype;
1866 assert(type != NULL);
1869 ir_mode *const mode = get_ir_mode(expression->expression.datatype);
1870 symconst_symbol sym;
1871 sym.type_p = get_ir_type(type);
1872 return new_SymConst(mode, sym, symconst_type_size);
1875 static ir_node *alignof_to_firm(const alignof_expression_t *expression)
1877 type_t *const type = expression->type;
1878 ir_mode *const mode = get_ir_mode(expression->expression.datatype);
1879 symconst_symbol sym;
1880 sym.type_p = get_ir_type(type);
1881 return new_SymConst(mode, sym, symconst_type_align);
1884 static long fold_constant(const expression_t *expression)
1886 assert(is_constant_expression(expression));
1888 ir_graph *old_current_ir_graph = current_ir_graph;
1889 if(current_ir_graph == NULL) {
1890 current_ir_graph = get_const_code_irg();
1893 ir_node *cnst = expression_to_firm(expression);
1894 current_ir_graph = old_current_ir_graph;
1896 if(!is_Const(cnst)) {
1897 panic("couldn't fold constant\n");
1900 tarval *tv = get_Const_tarval(cnst);
1901 if(!tarval_is_long(tv)) {
1902 panic("result of constant folding is not integer\n");
1905 return get_tarval_long(tv);
1908 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
1910 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1912 /* first try to fold a constant condition */
1913 if(is_constant_expression(expression->condition)) {
1914 long val = fold_constant(expression->condition);
1916 return expression_to_firm(expression->true_expression);
1918 return expression_to_firm(expression->false_expression);
1922 ir_node *cur_block = get_cur_block();
1924 /* create the true block */
1925 ir_node *true_block = new_immBlock();
1927 ir_node *true_val = expression_to_firm(expression->true_expression);
1928 ir_node *true_jmp = new_Jmp();
1930 /* create the false block */
1931 ir_node *false_block = new_immBlock();
1933 ir_node *false_val = expression_to_firm(expression->false_expression);
1934 ir_node *false_jmp = new_Jmp();
1936 /* create the condition evaluation */
1937 set_cur_block(cur_block);
1938 create_condition_evaluation(expression->condition, true_block, false_block);
1939 mature_immBlock(true_block);
1940 mature_immBlock(false_block);
1942 /* create the common block */
1943 ir_node *common_block = new_immBlock();
1944 add_immBlock_pred(common_block, true_jmp);
1945 add_immBlock_pred(common_block, false_jmp);
1946 mature_immBlock(common_block);
1948 /* TODO improve static semantics, so either both or no values are NULL */
1949 if (true_val == NULL || false_val == NULL)
1952 ir_node *in[2] = { true_val, false_val };
1953 ir_mode *mode = get_irn_mode(true_val);
1954 assert(get_irn_mode(false_val) == mode);
1955 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1960 static ir_node *select_addr(const select_expression_t *expression)
1962 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1964 ir_node *compound_addr = expression_to_firm(expression->compound);
1966 declaration_t *entry = expression->compound_entry;
1967 assert(entry->declaration_type == DECLARATION_TYPE_COMPOUND_MEMBER);
1968 ir_entity *entity = entry->v.entity;
1970 assert(entity != NULL);
1972 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
1977 static ir_node *select_to_firm(const select_expression_t *expression)
1979 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1980 ir_node *addr = select_addr(expression);
1981 type_t *type = revert_automatic_type_conversion(
1982 (const expression_t*) expression);
1983 type = skip_typeref(type);
1984 ir_type *irtype = get_ir_type(type);
1986 return deref_address(irtype, addr, dbgi);
1989 /* Values returned by __builtin_classify_type. */
1990 typedef enum gcc_type_class
1996 enumeral_type_class,
1999 reference_type_class,
2003 function_type_class,
2014 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2016 const type_t *const type = expr->type_expression->base.datatype;
2022 const atomic_type_t *const atomic_type = &type->atomic;
2023 switch (atomic_type->atype) {
2024 /* should not be reached */
2025 case ATOMIC_TYPE_INVALID:
2029 /* gcc cannot do that */
2030 case ATOMIC_TYPE_VOID:
2031 tc = void_type_class;
2034 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2035 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2036 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2037 case ATOMIC_TYPE_SHORT:
2038 case ATOMIC_TYPE_USHORT:
2039 case ATOMIC_TYPE_INT:
2040 case ATOMIC_TYPE_UINT:
2041 case ATOMIC_TYPE_LONG:
2042 case ATOMIC_TYPE_ULONG:
2043 case ATOMIC_TYPE_LONGLONG:
2044 case ATOMIC_TYPE_ULONGLONG:
2045 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2046 tc = integer_type_class;
2049 case ATOMIC_TYPE_FLOAT:
2050 case ATOMIC_TYPE_DOUBLE:
2051 case ATOMIC_TYPE_LONG_DOUBLE:
2052 tc = real_type_class;
2055 #ifdef PROVIDE_COMPLEX
2056 case ATOMIC_TYPE_FLOAT_COMPLEX:
2057 case ATOMIC_TYPE_DOUBLE_COMPLEX:
2058 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
2059 tc = complex_type_class;
2061 case ATOMIC_TYPE_FLOAT_IMAGINARY:
2062 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
2063 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
2064 tc = complex_type_class;
2069 panic("Unimplemented case in classify_type_to_firm().");
2074 case TYPE_ARRAY: /* gcc handles this as pointer */
2075 case TYPE_FUNCTION: /* gcc handles this as pointer */
2076 case TYPE_POINTER: tc = pointer_type_class; break;
2077 case TYPE_COMPOUND_STRUCT: tc = record_type_class; break;
2078 case TYPE_COMPOUND_UNION: tc = union_type_class; break;
2080 /* gcc handles this as integer */
2081 case TYPE_ENUM: tc = integer_type_class; break;
2084 panic("Unimplemented case in classify_type_to_firm().");
2087 dbg_info *const dbgi = get_dbg_info(&expr->expression.source_position);
2088 ir_mode *const mode = mode_int;
2089 tarval *const tv = new_tarval_from_long(tc, mode);
2090 return new_d_Const(dbgi, mode, tv);
2093 static ir_node *function_name_to_firm(
2094 const string_literal_expression_t *const expr)
2096 if (current_function_name == NULL) {
2097 const source_position_t *const src_pos =
2098 &expr->expression.source_position;
2099 const char *const name = current_function_decl->symbol->string;
2100 current_function_name = string_to_firm(src_pos, "__func__", name);
2103 return current_function_name;
2106 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2108 statement_t *statement = expr->statement;
2110 assert(statement->kind == STATEMENT_COMPOUND);
2111 return compound_statement_to_firm(&statement->compound);
2114 static ir_node *va_start_expression_to_firm(
2115 const va_start_expression_t *const expr)
2117 ir_type *const method_type = get_ir_type(current_function_decl->type);
2118 int const n = get_method_n_params(method_type) - 1;
2119 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2120 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2121 dbg_info *const dbgi =
2122 get_dbg_info(&expr->expression.source_position);
2123 ir_node *const no_mem = new_NoMem();
2124 ir_node *const arg_sel =
2125 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2127 size_t const parm_size = get_type_size(expr->parameter->type);
2128 ir_node *const cnst = new_Const_long(mode_uint, parm_size);
2129 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2130 set_value_for_expression(expr->ap, add);
2135 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2137 ir_type *const irtype = get_ir_type(expr->expression.datatype);
2138 ir_node *const ap = expression_to_firm(expr->ap);
2139 dbg_info *const dbgi = get_dbg_info(&expr->expression.source_position);
2140 ir_node *const res = deref_address(irtype, ap, dbgi);
2142 size_t const parm_size = get_type_size(expr->expression.datatype);
2143 ir_node *const cnst = new_Const_long(mode_uint, parm_size);
2144 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2145 set_value_for_expression(expr->ap, add);
2150 static ir_node *dereference_addr(const unary_expression_t *const expression)
2152 assert(expression->expression.kind == EXPR_UNARY_DEREFERENCE);
2153 return expression_to_firm(expression->value);
2156 static ir_node *expression_to_addr(const expression_t *expression)
2158 switch(expression->kind) {
2159 case EXPR_REFERENCE:
2160 return reference_addr(&expression->reference);
2161 case EXPR_ARRAY_ACCESS:
2162 return array_access_addr(&expression->array_access);
2164 return select_addr(&expression->select);
2166 return call_expression_to_firm(&expression->call);
2167 case EXPR_UNARY_DEREFERENCE: {
2168 return dereference_addr(&expression->unary);
2173 panic("trying to get address of non-lvalue");
2176 static ir_node *_expression_to_firm(const expression_t *expression)
2178 switch(expression->kind) {
2180 return const_to_firm(&expression->conste);
2181 case EXPR_STRING_LITERAL:
2182 return string_literal_to_firm(&expression->string);
2183 case EXPR_WIDE_STRING_LITERAL:
2184 return wide_string_literal_to_firm(&expression->wide_string);
2185 case EXPR_REFERENCE:
2186 return reference_expression_to_firm(&expression->reference);
2188 return call_expression_to_firm(&expression->call);
2190 return unary_expression_to_firm(&expression->unary);
2192 return binary_expression_to_firm(&expression->binary);
2193 case EXPR_ARRAY_ACCESS:
2194 return array_access_to_firm(&expression->array_access);
2196 return sizeof_to_firm(&expression->sizeofe);
2198 return alignof_to_firm(&expression->alignofe);
2199 case EXPR_CONDITIONAL:
2200 return conditional_to_firm(&expression->conditional);
2202 return select_to_firm(&expression->select);
2203 case EXPR_CLASSIFY_TYPE:
2204 return classify_type_to_firm(&expression->classify_type);
2206 case EXPR_PRETTY_FUNCTION:
2207 return function_name_to_firm(&expression->string);
2208 case EXPR_STATEMENT:
2209 return statement_expression_to_firm(&expression->statement);
2211 return va_start_expression_to_firm(&expression->va_starte);
2213 return va_arg_expression_to_firm(&expression->va_arge);
2215 case EXPR_BUILTIN_SYMBOL:
2216 panic("unimplemented expression found");
2222 panic("invalid expression found");
2225 static ir_node *expression_to_firm(const expression_t *expression)
2227 ir_node *res = _expression_to_firm(expression);
2229 if(res != NULL && get_irn_mode(res) == mode_b) {
2230 ir_mode *mode = get_ir_mode(expression->base.datatype);
2231 res = create_conv(NULL, res, mode);
2237 static ir_node *expression_to_modeb(const expression_t *expression)
2239 ir_node *res = _expression_to_firm(expression);
2240 res = create_conv(NULL, res, mode_b);
2246 * create a short-circuit expression evaluation that tries to construct
2247 * efficient control flow structures for &&, || and ! expressions
2249 static void create_condition_evaluation(const expression_t *expression,
2250 ir_node *true_block,
2251 ir_node *false_block)
2253 switch(expression->kind) {
2254 case EXPR_UNARY_NOT: {
2255 const unary_expression_t *unary_expression = &expression->unary;
2256 create_condition_evaluation(unary_expression->value, false_block,
2260 case EXPR_BINARY_LOGICAL_AND: {
2261 const binary_expression_t *binary_expression = &expression->binary;
2263 ir_node *cur_block = get_cur_block();
2264 ir_node *extra_block = new_immBlock();
2265 set_cur_block(cur_block);
2266 create_condition_evaluation(binary_expression->left, extra_block,
2268 mature_immBlock(extra_block);
2269 set_cur_block(extra_block);
2270 create_condition_evaluation(binary_expression->right, true_block,
2274 case EXPR_BINARY_LOGICAL_OR: {
2275 const binary_expression_t *binary_expression = &expression->binary;
2277 ir_node *cur_block = get_cur_block();
2278 ir_node *extra_block = new_immBlock();
2279 set_cur_block(cur_block);
2280 create_condition_evaluation(binary_expression->left, true_block,
2282 mature_immBlock(extra_block);
2283 set_cur_block(extra_block);
2284 create_condition_evaluation(binary_expression->right, true_block,
2292 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2293 ir_node *condition = expression_to_modeb(expression);
2294 ir_node *cond = new_d_Cond(dbgi, condition);
2295 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
2296 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
2298 /* set branch prediction info based on __builtin_expect */
2299 if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
2300 long cnst = fold_constant(expression->binary.right);
2301 cond_jmp_predicate pred;
2304 pred = COND_JMP_PRED_FALSE;
2306 pred = COND_JMP_PRED_TRUE;
2308 set_Cond_jmp_pred(cond, pred);
2311 add_immBlock_pred(true_block, true_proj);
2312 add_immBlock_pred(false_block, false_proj);
2314 set_cur_block(NULL);
2319 static void create_declaration_entity(declaration_t *declaration,
2320 declaration_type_t declaration_type,
2321 ir_type *parent_type)
2323 ident *const id = new_id_from_str(declaration->symbol->string);
2324 ir_type *const irtype = get_ir_type(declaration->type);
2325 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
2326 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
2327 set_entity_ld_ident(entity, id);
2329 declaration->declaration_type = (unsigned char) declaration_type;
2330 declaration->v.entity = entity;
2331 set_entity_variability(entity, variability_uninitialized);
2332 if(parent_type == get_tls_type())
2333 set_entity_allocation(entity, allocation_automatic);
2334 else if(declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE)
2335 set_entity_allocation(entity, allocation_static);
2336 /* TODO: visibility? */
2339 typedef struct compound_graph_path_entry_t compound_graph_path_entry_t;
2341 enum compound_graph_entry_type_t {
2342 COMPOUND_GRAPH_ENTRY_ARRAY,
2343 COMPOUND_GRAPH_ENTRY_COMPOUND
2346 struct compound_graph_path_entry_t {
2352 compound_graph_path_entry_t *prev;
2355 static void create_initializer_object(initializer_t *initializer, type_t *type,
2356 ir_entity *entity, compound_graph_path_entry_t *entry, int len);
2358 static compound_graph_path *create_compound_path(ir_type *type,
2359 compound_graph_path_entry_t *entry, int len)
2361 compound_graph_path *path = new_compound_graph_path(type, len);
2364 for( ; entry != NULL; entry = entry->prev, --i) {
2366 if(entry->type == COMPOUND_GRAPH_ENTRY_COMPOUND) {
2367 set_compound_graph_path_node(path, i, entry->v.entity);
2369 assert(entry->type == COMPOUND_GRAPH_ENTRY_ARRAY);
2370 set_compound_graph_path_array_index(path, i, entry->v.array_index);
2378 static void create_initializer_value(initializer_value_t *initializer,
2380 compound_graph_path_entry_t *entry,
2383 ir_node *node = expression_to_firm(initializer->value);
2384 ir_type *type = get_entity_type(entity);
2385 compound_graph_path *path = create_compound_path(type, entry, len);
2386 add_compound_ent_value_w_path(entity, node, path);
2389 static void create_initializer_compound(initializer_list_t *initializer,
2390 compound_type_t *type,
2392 compound_graph_path_entry_t *last_entry,
2395 declaration_t *compound_declaration = type->declaration;
2397 declaration_t *compound_entry = compound_declaration->context.declarations;
2399 compound_graph_path_entry_t entry;
2400 entry.type = COMPOUND_GRAPH_ENTRY_COMPOUND;
2401 entry.prev = last_entry;
2405 for( ; compound_entry != NULL; compound_entry = compound_entry->next) {
2406 if(compound_entry->symbol == NULL)
2408 if(compound_entry->namespc != NAMESPACE_NORMAL)
2411 if(i >= initializer->len)
2414 entry.v.entity = compound_entry->v.entity;
2416 initializer_t *sub_initializer = initializer->initializers[i];
2418 assert(compound_entry != NULL);
2419 assert(compound_entry->declaration_type
2420 == DECLARATION_TYPE_COMPOUND_MEMBER);
2422 if(sub_initializer->kind == INITIALIZER_VALUE) {
2423 create_initializer_value(&sub_initializer->value,
2424 entity, &entry, len);
2426 type_t *entry_type = skip_typeref(compound_entry->type);
2427 create_initializer_object(sub_initializer, entry_type, entity,
2435 static void create_initializer_array(initializer_list_t *initializer,
2436 array_type_t *type, ir_entity *entity,
2437 compound_graph_path_entry_t *last_entry,
2440 type_t *element_type = type->element_type;
2441 element_type = skip_typeref(element_type);
2443 compound_graph_path_entry_t entry;
2444 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2445 entry.prev = last_entry;
2449 for(i = 0; i < initializer->len; ++i) {
2450 entry.v.array_index = i;
2452 initializer_t *sub_initializer = initializer->initializers[i];
2454 if(sub_initializer->kind == INITIALIZER_VALUE) {
2455 create_initializer_value(&sub_initializer->value,
2456 entity, &entry, len);
2458 create_initializer_object(sub_initializer, element_type, entity,
2464 /* TODO: initialize rest... */
2465 if(type->size_expression != NULL) {
2466 size_t array_len = fold_constant(type->size_expression);
2467 for( ; i < array_len; ++i) {
2474 static void create_initializer_string(initializer_string_t *initializer,
2475 array_type_t *type, ir_entity *entity,
2476 compound_graph_path_entry_t *last_entry,
2479 type_t *element_type = type->element_type;
2480 element_type = skip_typeref(element_type);
2482 compound_graph_path_entry_t entry;
2483 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2484 entry.prev = last_entry;
2487 ir_type *irtype = get_entity_type(entity);
2488 size_t arr_len = get_array_type_size(type);
2489 const char *p = initializer->string;
2491 for(i = 0; i < arr_len; ++i, ++p) {
2492 entry.v.array_index = i;
2494 ir_node *node = new_Const_long(mode_Bs, *p);
2495 compound_graph_path *path = create_compound_path(irtype, &entry, len);
2496 add_compound_ent_value_w_path(entity, node, path);
2503 static void create_initializer_wide_string(
2504 const initializer_wide_string_t *const initializer, array_type_t *const type,
2505 ir_entity *const entity, compound_graph_path_entry_t *const last_entry,
2508 type_t *element_type = type->element_type;
2509 element_type = skip_typeref(element_type);
2511 compound_graph_path_entry_t entry;
2512 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2513 entry.prev = last_entry;
2516 ir_type *const irtype = get_entity_type(entity);
2517 const size_t arr_len = get_array_type_size(type);
2518 const wchar_rep_t * p = initializer->string.begin;
2519 const wchar_rep_t *const end = p + initializer->string.size;
2520 for (size_t i = 0; i < arr_len && p != end; ++i, ++p) {
2521 entry.v.array_index = i;
2523 ir_node *node = new_Const_long(mode_int, *p);
2524 compound_graph_path *path = create_compound_path(irtype, &entry, len);
2525 add_compound_ent_value_w_path(entity, node, path);
2529 static void create_initializer_object(initializer_t *initializer, type_t *type,
2530 ir_entity *entity, compound_graph_path_entry_t *entry, int len)
2532 if(is_type_array(type)) {
2533 array_type_t *array_type = &type->array;
2535 switch (initializer->kind) {
2536 case INITIALIZER_STRING: {
2537 initializer_string_t *const string = &initializer->string;
2538 create_initializer_string(string, array_type, entity, entry, len);
2542 case INITIALIZER_WIDE_STRING: {
2543 initializer_wide_string_t *const string = &initializer->wide_string;
2544 create_initializer_wide_string(string, array_type, entity, entry, len);
2548 case INITIALIZER_LIST: {
2549 initializer_list_t *const list = &initializer->list;
2550 create_initializer_array(list, array_type, entity, entry, len);
2554 case INITIALIZER_VALUE:
2557 panic("Unhandled initializer");
2559 assert(initializer->kind == INITIALIZER_LIST);
2560 initializer_list_t *list = &initializer->list;
2562 assert(is_type_compound(type));
2563 compound_type_t *compound_type = &type->compound;
2564 create_initializer_compound(list, compound_type, entity, entry, len);
2568 static void create_initializer_local_variable_entity(declaration_t *declaration)
2570 initializer_t *initializer = declaration->init.initializer;
2571 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
2572 ir_entity *entity = declaration->v.entity;
2573 ir_node *memory = get_store();
2574 ir_node *nomem = new_NoMem();
2575 ir_node *frame = get_irg_frame(current_ir_graph);
2576 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
2578 if(initializer->kind == INITIALIZER_VALUE) {
2579 initializer_value_t *initializer_value = &initializer->value;
2581 ir_node *value = expression_to_firm(initializer_value->value);
2582 type_t *type = skip_typeref(declaration->type);
2583 assign_value(dbgi, addr, type, value);
2587 /* create a "template" entity which is copied to the entity on the stack */
2588 ident *const id = unique_ident("initializer");
2589 ir_type *const irtype = get_ir_type(declaration->type);
2590 ir_type *const global_type = get_glob_type();
2591 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
2592 set_entity_ld_ident(init_entity, id);
2594 set_entity_variability(init_entity, variability_initialized);
2595 set_entity_visibility(init_entity, visibility_local);
2596 set_entity_allocation(init_entity, allocation_static);
2598 ir_graph *const old_current_ir_graph = current_ir_graph;
2599 current_ir_graph = get_const_code_irg();
2601 type_t *const type = skip_typeref(declaration->type);
2602 create_initializer_object(initializer, type, init_entity, NULL, 0);
2604 assert(current_ir_graph == get_const_code_irg());
2605 current_ir_graph = old_current_ir_graph;
2607 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
2608 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
2610 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
2611 set_store(copyb_mem);
2614 static void create_initializer(declaration_t *declaration)
2616 initializer_t *initializer = declaration->init.initializer;
2617 if(initializer == NULL)
2620 declaration_type_t declaration_type
2621 = (declaration_type_t) declaration->declaration_type;
2622 if(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY) {
2623 create_initializer_local_variable_entity(declaration);
2627 if(initializer->kind == INITIALIZER_VALUE) {
2628 initializer_value_t *initializer_value = &initializer->value;
2630 ir_node *value = expression_to_firm(initializer_value->value);
2632 if(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
2633 set_value(declaration->v.value_number, value);
2635 assert(declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
2637 ir_entity *entity = declaration->v.entity;
2639 set_entity_variability(entity, variability_initialized);
2640 set_atomic_ent_value(entity, value);
2643 assert(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY
2644 || declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
2646 ir_entity *entity = declaration->v.entity;
2647 set_entity_variability(entity, variability_initialized);
2649 type_t *type = skip_typeref(declaration->type);
2650 create_initializer_object(initializer, type, entity, NULL, 0);
2654 static void create_local_variable(declaration_t *declaration)
2656 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
2658 bool needs_entity = declaration->address_taken;
2659 type_t *type = skip_typeref(declaration->type);
2661 if(is_type_array(type) || is_type_compound(type)) {
2662 needs_entity = true;
2666 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2667 create_declaration_entity(declaration,
2668 DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
2671 declaration->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
2672 declaration->v.value_number = next_value_number_function;
2673 ++next_value_number_function;
2676 create_initializer(declaration);
2679 static void create_local_static_variable(declaration_t *declaration)
2681 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
2683 type_t *const type = skip_typeref(declaration->type);
2684 ir_type *const global_type = get_glob_type();
2685 ident *const id = unique_ident(declaration->symbol->string);
2686 ir_type *const irtype = get_ir_type(type);
2687 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
2688 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
2689 set_entity_ld_ident(entity, id);
2691 declaration->declaration_type = DECLARATION_TYPE_GLOBAL_VARIABLE;
2692 declaration->v.entity = entity;
2693 set_entity_variability(entity, variability_uninitialized);
2694 set_entity_visibility(entity, visibility_local);
2695 set_entity_allocation(entity, allocation_static);
2697 ir_graph *const old_current_ir_graph = current_ir_graph;
2698 current_ir_graph = get_const_code_irg();
2700 create_initializer(declaration);
2702 assert(current_ir_graph == get_const_code_irg());
2703 current_ir_graph = old_current_ir_graph;
2708 static void return_statement_to_firm(return_statement_t *statement)
2710 if(get_cur_block() == NULL)
2713 ir_type *func_irtype = get_ir_type(current_function_decl->type);
2715 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
2719 if(get_method_n_ress(func_irtype) > 0) {
2720 ir_type *res_type = get_method_res_type(func_irtype, 0);
2722 if(statement->return_value != NULL) {
2723 ir_node *node = expression_to_firm(statement->return_value);
2724 node = do_strict_conv(dbgi, node);
2728 if(is_compound_type(res_type)) {
2731 mode = get_type_mode(res_type);
2733 in[0] = new_Unknown(mode);
2737 /* build return_value for its side effects */
2738 if(statement->return_value != NULL) {
2739 expression_to_firm(statement->return_value);
2744 ir_node *store = get_store();
2745 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
2747 ir_node *end_block = get_irg_end_block(current_ir_graph);
2748 add_immBlock_pred(end_block, ret);
2750 set_cur_block(NULL);
2753 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
2755 if(get_cur_block() == NULL)
2758 return expression_to_firm(statement->expression);
2761 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
2763 ir_node *result = NULL;
2764 statement_t *statement = compound->statements;
2765 for( ; statement != NULL; statement = statement->base.next) {
2766 //context2firm(&statement->context);
2768 if(statement->base.next == NULL
2769 && statement->kind == STATEMENT_EXPRESSION) {
2770 result = expression_statement_to_firm(
2771 &statement->expression);
2774 statement_to_firm(statement);
2780 static void create_local_declaration(declaration_t *declaration)
2782 type_t *type = skip_typeref(declaration->type);
2784 switch ((storage_class_tag_t) declaration->storage_class) {
2785 case STORAGE_CLASS_STATIC:
2786 create_local_static_variable(declaration);
2788 case STORAGE_CLASS_ENUM_ENTRY:
2789 panic("enum entry declaration in local block found");
2790 case STORAGE_CLASS_EXTERN:
2791 panic("extern declaration in local block found");
2792 case STORAGE_CLASS_NONE:
2793 case STORAGE_CLASS_AUTO:
2794 case STORAGE_CLASS_REGISTER:
2795 if(is_type_function(type)) {
2796 panic("nested functions not supported yet");
2798 create_local_variable(declaration);
2801 case STORAGE_CLASS_TYPEDEF:
2802 case STORAGE_CLASS_THREAD:
2803 case STORAGE_CLASS_THREAD_EXTERN:
2804 case STORAGE_CLASS_THREAD_STATIC:
2807 panic("invalid storage class found");
2810 static void declaration_statement_to_firm(declaration_statement_t *statement)
2812 declaration_t *declaration = statement->declarations_begin;
2813 declaration_t *end = statement->declarations_end->next;
2814 for( ; declaration != end; declaration = declaration->next) {
2815 create_local_variable(declaration);
2819 static void if_statement_to_firm(if_statement_t *statement)
2821 ir_node *cur_block = get_cur_block();
2823 ir_node *fallthrough_block = new_immBlock();
2825 /* the true (blocks) */
2826 ir_node *true_block;
2827 if (statement->true_statement != NULL) {
2828 true_block = new_immBlock();
2829 statement_to_firm(statement->true_statement);
2830 if(get_cur_block() != NULL) {
2831 ir_node *jmp = new_Jmp();
2832 add_immBlock_pred(fallthrough_block, jmp);
2835 true_block = fallthrough_block;
2838 /* the false (blocks) */
2839 ir_node *false_block;
2840 if(statement->false_statement != NULL) {
2841 false_block = new_immBlock();
2843 statement_to_firm(statement->false_statement);
2844 if(get_cur_block() != NULL) {
2845 ir_node *jmp = new_Jmp();
2846 add_immBlock_pred(fallthrough_block, jmp);
2849 false_block = fallthrough_block;
2852 /* create the condition */
2853 if(cur_block != NULL) {
2854 set_cur_block(cur_block);
2855 create_condition_evaluation(statement->condition, true_block,
2859 mature_immBlock(true_block);
2860 if(false_block != fallthrough_block) {
2861 mature_immBlock(false_block);
2863 mature_immBlock(fallthrough_block);
2865 set_cur_block(fallthrough_block);
2868 static void while_statement_to_firm(while_statement_t *statement)
2870 ir_node *jmp = NULL;
2871 if(get_cur_block() != NULL) {
2875 /* create the header block */
2876 ir_node *header_block = new_immBlock();
2878 add_immBlock_pred(header_block, jmp);
2881 /* the false block */
2882 ir_node *false_block = new_immBlock();
2885 ir_node *body_block;
2886 if (statement->body != NULL) {
2887 ir_node *old_continue_label = continue_label;
2888 ir_node *old_break_label = break_label;
2889 continue_label = header_block;
2890 break_label = false_block;
2892 body_block = new_immBlock();
2893 statement_to_firm(statement->body);
2895 assert(continue_label == header_block);
2896 assert(break_label == false_block);
2897 continue_label = old_continue_label;
2898 break_label = old_break_label;
2900 if(get_cur_block() != NULL) {
2902 add_immBlock_pred(header_block, jmp);
2905 body_block = header_block;
2908 /* create the condition */
2909 set_cur_block(header_block);
2911 create_condition_evaluation(statement->condition, body_block, false_block);
2912 mature_immBlock(body_block);
2913 mature_immBlock(false_block);
2914 mature_immBlock(header_block);
2916 set_cur_block(false_block);
2919 static void do_while_statement_to_firm(do_while_statement_t *statement)
2921 ir_node *jmp = NULL;
2922 if(get_cur_block() != NULL) {
2926 /* create the header block */
2927 ir_node *header_block = new_immBlock();
2929 /* the false block */
2930 ir_node *false_block = new_immBlock();
2933 ir_node *body_block = new_immBlock();
2935 add_immBlock_pred(body_block, jmp);
2938 if (statement->body != NULL) {
2939 ir_node *old_continue_label = continue_label;
2940 ir_node *old_break_label = break_label;
2941 continue_label = header_block;
2942 break_label = false_block;
2944 statement_to_firm(statement->body);
2946 assert(continue_label == header_block);
2947 assert(break_label == false_block);
2948 continue_label = old_continue_label;
2949 break_label = old_break_label;
2951 if (get_cur_block() == NULL) {
2952 mature_immBlock(header_block);
2953 mature_immBlock(body_block);
2954 mature_immBlock(false_block);
2959 ir_node *body_jmp = new_Jmp();
2960 add_immBlock_pred(header_block, body_jmp);
2961 mature_immBlock(header_block);
2963 /* create the condition */
2964 set_cur_block(header_block);
2966 create_condition_evaluation(statement->condition, body_block, false_block);
2967 mature_immBlock(body_block);
2968 mature_immBlock(false_block);
2969 mature_immBlock(header_block);
2971 set_cur_block(false_block);
2974 static void for_statement_to_firm(for_statement_t *statement)
2976 ir_node *jmp = NULL;
2977 if (get_cur_block() != NULL) {
2978 if(statement->initialisation != NULL) {
2979 expression_to_firm(statement->initialisation);
2982 /* create declarations */
2983 declaration_t *declaration = statement->context.declarations;
2984 for( ; declaration != NULL; declaration = declaration->next) {
2985 create_local_declaration(declaration);
2992 /* create the step block */
2993 ir_node *const step_block = new_immBlock();
2994 if (statement->step != NULL) {
2995 expression_to_firm(statement->step);
2997 ir_node *const step_jmp = new_Jmp();
2999 /* create the header block */
3000 ir_node *const header_block = new_immBlock();
3002 add_immBlock_pred(header_block, jmp);
3004 add_immBlock_pred(header_block, step_jmp);
3006 /* the false block */
3007 ir_node *const false_block = new_immBlock();
3010 ir_node * body_block;
3011 if (statement->body != NULL) {
3012 ir_node *const old_continue_label = continue_label;
3013 ir_node *const old_break_label = break_label;
3014 continue_label = step_block;
3015 break_label = false_block;
3017 body_block = new_immBlock();
3018 statement_to_firm(statement->body);
3020 assert(continue_label == step_block);
3021 assert(break_label == false_block);
3022 continue_label = old_continue_label;
3023 break_label = old_break_label;
3025 if (get_cur_block() != NULL) {
3027 add_immBlock_pred(step_block, jmp);
3030 body_block = step_block;
3033 /* create the condition */
3034 set_cur_block(header_block);
3035 if (statement->condition != NULL) {
3036 create_condition_evaluation(statement->condition, body_block,
3039 keep_alive(header_block);
3041 add_immBlock_pred(body_block, jmp);
3044 mature_immBlock(body_block);
3045 mature_immBlock(false_block);
3046 mature_immBlock(step_block);
3047 mature_immBlock(header_block);
3048 mature_immBlock(false_block);
3050 set_cur_block(false_block);
3053 static void create_jump_statement(const statement_t *statement,
3054 ir_node *target_block)
3056 if(get_cur_block() == NULL)
3059 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3060 ir_node *jump = new_d_Jmp(dbgi);
3061 add_immBlock_pred(target_block, jump);
3063 set_cur_block(NULL);
3066 static void switch_statement_to_firm(const switch_statement_t *statement)
3068 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
3070 ir_node *expression = expression_to_firm(statement->expression);
3071 ir_node *cond = new_d_Cond(dbgi, expression);
3072 ir_node *break_block = new_immBlock();
3074 set_cur_block(NULL);
3076 ir_node *const old_switch_cond = current_switch_cond;
3077 ir_node *const old_break_label = break_label;
3078 const bool old_saw_default_label = saw_default_label;
3079 current_switch_cond = cond;
3080 break_label = break_block;
3082 statement_to_firm(statement->body);
3084 if(get_cur_block() != NULL) {
3085 ir_node *jmp = new_Jmp();
3086 add_immBlock_pred(break_block, jmp);
3089 if (!saw_default_label) {
3090 set_cur_block(get_nodes_block(cond));
3091 ir_node *const proj = new_d_defaultProj(dbgi, cond,
3092 MAGIC_DEFAULT_PN_NUMBER);
3093 add_immBlock_pred(break_block, proj);
3096 assert(current_switch_cond == cond);
3097 assert(break_label == break_block);
3098 current_switch_cond = old_switch_cond;
3099 break_label = old_break_label;
3100 saw_default_label = old_saw_default_label;
3102 mature_immBlock(break_block);
3103 set_cur_block(break_block);
3106 static void case_label_to_firm(const case_label_statement_t *statement)
3108 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
3110 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
3112 /* let's create a node and hope firm constant folding creates a Const
3115 set_cur_block(get_nodes_block(current_switch_cond));
3116 if(statement->expression) {
3117 long pn = fold_constant(statement->expression);
3118 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
3119 /* oops someone detected our cheating... */
3120 panic("magic default pn used");
3122 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
3124 saw_default_label = true;
3125 proj = new_d_defaultProj(dbgi, current_switch_cond,
3126 MAGIC_DEFAULT_PN_NUMBER);
3129 ir_node *block = new_immBlock();
3130 if (fallthrough != NULL) {
3131 add_immBlock_pred(block, fallthrough);
3133 add_immBlock_pred(block, proj);
3134 mature_immBlock(block);
3136 if(statement->label_statement != NULL) {
3137 statement_to_firm(statement->label_statement);
3141 static ir_node *get_label_block(declaration_t *label)
3143 assert(label->namespc == NAMESPACE_LABEL);
3145 if(label->declaration_type == DECLARATION_TYPE_LABEL_BLOCK) {
3146 return label->v.block;
3148 assert(label->declaration_type == DECLARATION_TYPE_UNKNOWN);
3150 ir_node *old_cur_block = get_cur_block();
3151 ir_node *block = new_immBlock();
3152 set_cur_block(old_cur_block);
3154 label->declaration_type = DECLARATION_TYPE_LABEL_BLOCK;
3155 label->v.block = block;
3157 ARR_APP1(ir_node *, imature_blocks, block);
3162 static void label_to_firm(const label_statement_t *statement)
3164 ir_node *block = get_label_block(statement->label);
3166 if(get_cur_block() != NULL) {
3167 ir_node *jmp = new_Jmp();
3168 add_immBlock_pred(block, jmp);
3171 set_cur_block(block);
3174 if(statement->label_statement != NULL) {
3175 statement_to_firm(statement->label_statement);
3179 static void goto_to_firm(const goto_statement_t *statement)
3181 if(get_cur_block() == NULL)
3184 ir_node *block = get_label_block(statement->label);
3185 ir_node *jmp = new_Jmp();
3186 add_immBlock_pred(block, jmp);
3188 set_cur_block(NULL);
3191 typedef enum modifier_t {
3192 ASM_MODIFIER_WRITE_ONLY = 1 << 0,
3193 ASM_MODIFIER_READ_WRITE = 1 << 1,
3194 ASM_MODIFIER_COMMUTATIVE = 1 << 2,
3195 ASM_MODIFIER_EARLYCLOBBER = 1 << 3,
3199 static void asm_statement_to_firm(const asm_statement_t *statement)
3201 bool needs_memory = false;
3203 size_t n_clobbers = 0;
3204 asm_clobber_t *clobber = statement->clobbers;
3205 for( ; clobber != NULL; clobber = clobber->next) {
3206 if(strcmp(clobber->clobber, "memory") == 0) {
3207 needs_memory = true;
3211 ident *id = new_id_from_str(clobber->clobber);
3212 obstack_ptr_grow(&asm_obst, id);
3215 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
3216 ident **clobbers = NULL;
3217 if(n_clobbers > 0) {
3218 clobbers = obstack_finish(&asm_obst);
3221 /* find and count input and output constraints */
3222 asm_constraint_t *constraint = statement->inputs;
3223 for( ; constraint != NULL; constraint = constraint->next) {
3225 bool supports_memop = false;
3226 for(const char *c = constraint->constraints; *c != 0; ++c) {
3227 /* TODO: improve error messages */
3231 panic("multiple alternative assembler constraints not "
3239 supports_memop = true;
3240 obstack_1grow(&asm_obst, *c);
3243 if(modifiers & ASM_MODIFIER_READ_WRITE)
3244 panic("inconsistent register constraints");
3245 modifiers |= ASM_MODIFIER_WRITE_ONLY;
3248 if(modifiers & ASM_MODIFIER_WRITE_ONLY)
3249 panic("inconsistent register constraints");
3250 modifiers |= ASM_MODIFIER_READ_WRITE;
3253 modifiers |= ASM_MODIFIER_EARLYCLOBBER;
3254 panic("early clobber assembler constraint not supported yet");
3257 modifiers |= ASM_MODIFIER_COMMUTATIVE;
3258 panic("commutative assembler constraint not supported yet");
3261 /* skip register preferences stuff... */
3262 while(*c != 0 && *c != ',')
3266 /* skip register preferences stuff... */
3270 obstack_1grow(&asm_obst, *c);
3274 obstack_1grow(&asm_obst, '\0');
3275 const char *constraint_string = obstack_finish(&asm_obst);
3277 needs_memory |= supports_memop;
3278 if(supports_memop) {
3286 static void statement_to_firm(statement_t *statement)
3288 switch(statement->kind) {
3289 case STATEMENT_INVALID:
3290 panic("invalid statement found");
3291 case STATEMENT_COMPOUND:
3292 compound_statement_to_firm(&statement->compound);
3294 case STATEMENT_RETURN:
3295 return_statement_to_firm(&statement->returns);
3297 case STATEMENT_EXPRESSION:
3298 expression_statement_to_firm(&statement->expression);
3301 if_statement_to_firm(&statement->ifs);
3303 case STATEMENT_WHILE:
3304 while_statement_to_firm(&statement->whiles);
3306 case STATEMENT_DO_WHILE:
3307 do_while_statement_to_firm(&statement->do_while);
3309 case STATEMENT_DECLARATION:
3310 declaration_statement_to_firm(&statement->declaration);
3312 case STATEMENT_BREAK:
3313 create_jump_statement(statement, break_label);
3315 case STATEMENT_CONTINUE:
3316 create_jump_statement(statement, continue_label);
3318 case STATEMENT_SWITCH:
3319 switch_statement_to_firm(&statement->switchs);
3321 case STATEMENT_CASE_LABEL:
3322 case_label_to_firm(&statement->case_label);
3325 for_statement_to_firm(&statement->fors);
3327 case STATEMENT_LABEL:
3328 label_to_firm(&statement->label);
3330 case STATEMENT_GOTO:
3331 goto_to_firm(&statement->gotos);
3334 //asm_statement_to_firm(&statement->asms);
3338 panic("Statement not implemented\n");
3341 static int count_decls_in_expression(const expression_t *expression);
3343 static int count_local_declarations(const declaration_t * decl,
3344 const declaration_t *const end)
3347 for (; decl != end; decl = decl->next) {
3348 const type_t *type = skip_typeref(decl->type);
3349 switch (type->kind) {
3353 if (!decl->address_taken)
3359 const initializer_t *initializer = decl->init.initializer;
3360 /* FIXME: should walk initializer hierarchies... */
3361 if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
3362 count += count_decls_in_expression(initializer->value.value);
3368 static int count_decls_in_expression(const expression_t *expression) {
3369 if(expression == NULL)
3372 switch(expression->base.kind) {
3373 case EXPR_STATEMENT:
3374 return count_decls_in_stmts(expression->statement.statement);
3376 return count_decls_in_expression(expression->binary.left)
3377 + count_decls_in_expression(expression->binary.right);
3379 return count_decls_in_expression(expression->unary.value);
3385 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
3386 * (or implement all the missing expressions here/implement a walker)
3392 static int count_decls_in_stmts(const statement_t *stmt)
3395 for (; stmt != NULL; stmt = stmt->base.next) {
3396 switch (stmt->kind) {
3397 case STATEMENT_DECLARATION: {
3398 const declaration_statement_t *const decl_stmt = &stmt->declaration;
3399 count += count_local_declarations(decl_stmt->declarations_begin,
3400 decl_stmt->declarations_end->next);
3404 case STATEMENT_COMPOUND: {
3405 const compound_statement_t *const comp =
3407 count += count_decls_in_stmts(comp->statements);
3411 case STATEMENT_IF: {
3412 const if_statement_t *const if_stmt = &stmt->ifs;
3413 count += count_decls_in_expression(if_stmt->condition);
3414 count += count_decls_in_stmts(if_stmt->true_statement);
3415 count += count_decls_in_stmts(if_stmt->false_statement);
3419 case STATEMENT_SWITCH: {
3420 const switch_statement_t *const switch_stmt = &stmt->switchs;
3421 count += count_decls_in_expression(switch_stmt->expression);
3422 count += count_decls_in_stmts(switch_stmt->body);
3426 case STATEMENT_LABEL: {
3427 const label_statement_t *const label_stmt = &stmt->label;
3428 count += count_decls_in_stmts(label_stmt->label_statement);
3432 case STATEMENT_WHILE: {
3433 const while_statement_t *const while_stmt = &stmt->whiles;
3434 count += count_decls_in_expression(while_stmt->condition);
3435 count += count_decls_in_stmts(while_stmt->body);
3439 case STATEMENT_DO_WHILE: {
3440 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
3441 count += count_decls_in_expression(do_while_stmt->condition);
3442 count += count_decls_in_stmts(do_while_stmt->body);
3446 case STATEMENT_FOR: {
3447 const for_statement_t *const for_stmt = &stmt->fors;
3448 count += count_local_declarations(for_stmt->context.declarations, NULL);
3449 count += count_decls_in_expression(for_stmt->initialisation);
3450 count += count_decls_in_expression(for_stmt->condition);
3451 count += count_decls_in_expression(for_stmt->step);
3452 count += count_decls_in_stmts(for_stmt->body);
3456 case STATEMENT_CASE_LABEL: {
3457 const case_label_statement_t *label = &stmt->case_label;
3458 count += count_decls_in_expression(label->expression);
3459 count += count_decls_in_stmts(label->label_statement);
3464 case STATEMENT_BREAK:
3465 case STATEMENT_CONTINUE:
3468 case STATEMENT_EXPRESSION: {
3469 const expression_statement_t *expr_stmt = &stmt->expression;
3470 count += count_decls_in_expression(expr_stmt->expression);
3474 case STATEMENT_GOTO:
3475 case STATEMENT_INVALID:
3478 case STATEMENT_RETURN: {
3479 const return_statement_t *ret_stmt = &stmt->returns;
3480 count += count_decls_in_expression(ret_stmt->return_value);
3488 static int get_function_n_local_vars(declaration_t *declaration)
3492 /* count parameters */
3493 count += count_local_declarations(declaration->context.declarations, NULL);
3495 /* count local variables declared in body */
3496 count += count_decls_in_stmts(declaration->init.statement);
3501 static void initialize_function_parameters(declaration_t *declaration)
3503 ir_graph *irg = current_ir_graph;
3504 ir_node *args = get_irg_args(irg);
3505 ir_node *start_block = get_irg_start_block(irg);
3506 ir_type *function_irtype = get_ir_type(declaration->type);
3509 declaration_t *parameter = declaration->context.declarations;
3510 for( ; parameter != NULL; parameter = parameter->next, ++n) {
3511 assert(parameter->declaration_type == DECLARATION_TYPE_UNKNOWN);
3512 type_t *type = skip_typeref(parameter->type);
3514 bool needs_entity = parameter->address_taken;
3515 assert(!is_type_array(type));
3516 if(is_type_compound(type)) {
3517 needs_entity = true;
3521 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
3522 ident *id = new_id_from_str(parameter->symbol->string);
3523 set_entity_ident(entity, id);
3525 parameter->declaration_type
3526 = DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY;
3527 parameter->v.entity = entity;
3531 ir_mode *mode = get_ir_mode(parameter->type);
3533 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
3535 parameter->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
3536 parameter->v.value_number = next_value_number_function;
3537 ++next_value_number_function;
3539 set_value(parameter->v.value_number, proj);
3544 * Handle additional decl modifiers for IR-graphs
3546 * @param irg the IR-graph
3547 * @param dec_modifiers additional modifiers
3549 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
3551 if (decl_modifiers & DM_NORETURN) {
3552 /* TRUE if the declaration includes the Microsoft
3553 __declspec(noreturn) specifier. */
3554 set_irg_additional_property(irg, mtp_property_noreturn);
3556 if (decl_modifiers & DM_NOTHROW) {
3557 /* TRUE if the declaration includes the Microsoft
3558 __declspec(nothrow) specifier. */
3559 set_irg_additional_property(irg, mtp_property_nothrow);
3561 if (decl_modifiers & DM_NAKED) {
3562 /* TRUE if the declaration includes the Microsoft
3563 __declspec(naked) specifier. */
3564 set_irg_additional_property(irg, mtp_property_naked);
3566 if (decl_modifiers & DM_FORCEINLINE) {
3567 /* TRUE if the declaration includes the
3568 Microsoft __forceinline specifier. */
3569 set_irg_inline_property(irg, irg_inline_forced);
3571 if (decl_modifiers & DM_NOINLINE) {
3572 /* TRUE if the declaration includes the Microsoft
3573 __declspec(noinline) specifier. */
3574 set_irg_inline_property(irg, irg_inline_forbidden);
3578 static void create_function(declaration_t *declaration)
3580 ir_entity *function_entity = get_function_entity(declaration);
3582 if(declaration->init.statement == NULL)
3585 current_function_decl = declaration;
3586 current_function_name = NULL;
3588 assert(imature_blocks == NULL);
3589 imature_blocks = NEW_ARR_F(ir_node*, 0);
3591 int n_local_vars = get_function_n_local_vars(declaration);
3592 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
3593 ir_node *first_block = get_cur_block();
3595 /* set inline flags */
3596 if (declaration->is_inline)
3597 set_irg_inline_property(irg, irg_inline_recomended);
3598 handle_decl_modifier_irg(irg, declaration->decl_modifiers);
3600 next_value_number_function = 0;
3601 initialize_function_parameters(declaration);
3603 statement_to_firm(declaration->init.statement);
3605 ir_node *end_block = get_irg_end_block(irg);
3607 /* do we have a return statement yet? */
3608 if(get_cur_block() != NULL) {
3609 type_t *type = skip_typeref(declaration->type);
3610 assert(is_type_function(type));
3611 const function_type_t *func_type = &type->function;
3612 const type_t *return_type
3613 = skip_typeref(func_type->return_type);
3616 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
3617 ret = new_Return(get_store(), 0, NULL);
3620 if(is_type_scalar(return_type)) {
3621 mode = get_ir_mode(func_type->return_type);
3627 /* ยง5.1.2.2.3 main implicitly returns 0 */
3628 if (strcmp(declaration->symbol->string, "main") == 0) {
3629 in[0] = new_Const(mode, get_mode_null(mode));
3631 in[0] = new_Unknown(mode);
3633 ret = new_Return(get_store(), 1, in);
3635 add_immBlock_pred(end_block, ret);
3638 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
3639 mature_immBlock(imature_blocks[i]);
3641 DEL_ARR_F(imature_blocks);
3642 imature_blocks = NULL;
3644 mature_immBlock(first_block);
3645 mature_immBlock(end_block);
3647 irg_finalize_cons(irg);
3649 /* finalize the frame type */
3650 ir_type *frame_type = get_irg_frame_type(irg);
3651 int n = get_compound_n_members(frame_type);
3654 for(int i = 0; i < n; ++i) {
3655 ir_entity *entity = get_compound_member(frame_type, i);
3656 ir_type *entity_type = get_entity_type(entity);
3658 int align = get_type_alignment_bytes(entity_type);
3659 if(align > align_all)
3663 misalign = offset % align;
3665 offset += align - misalign;
3669 set_entity_offset(entity, offset);
3670 offset += get_type_size_bytes(entity_type);
3672 set_type_size_bytes(frame_type, offset);
3673 set_type_alignment_bytes(frame_type, align_all);
3674 set_type_state(frame_type, layout_fixed);
3679 static void create_global_variable(declaration_t *declaration)
3683 switch ((storage_class_tag_t)declaration->storage_class) {
3684 case STORAGE_CLASS_STATIC:
3685 vis = visibility_local;
3688 case STORAGE_CLASS_EXTERN:
3689 vis = visibility_external_allocated;
3692 case STORAGE_CLASS_NONE:
3693 vis = visibility_external_visible;
3696 case STORAGE_CLASS_THREAD:
3697 vis = visibility_external_visible;
3700 case STORAGE_CLASS_THREAD_EXTERN:
3701 vis = visibility_external_allocated;
3704 case STORAGE_CLASS_THREAD_STATIC:
3705 vis = visibility_local;
3709 var_type = get_tls_type();
3713 var_type = get_glob_type();
3717 create_declaration_entity(declaration, DECLARATION_TYPE_GLOBAL_VARIABLE,
3719 set_entity_visibility(declaration->v.entity, vis);
3721 current_ir_graph = get_const_code_irg();
3722 create_initializer(declaration);
3725 case STORAGE_CLASS_TYPEDEF:
3726 case STORAGE_CLASS_AUTO:
3727 case STORAGE_CLASS_REGISTER:
3728 case STORAGE_CLASS_ENUM_ENTRY:
3731 panic("Invalid storage class for global variable");
3734 static void context_to_firm(context_t *context)
3736 /* first pass: create declarations */
3737 declaration_t *declaration = context->declarations;
3738 for( ; declaration != NULL; declaration = declaration->next) {
3739 if(declaration->namespc != NAMESPACE_NORMAL)
3741 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
3742 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
3744 if(declaration->symbol == NULL)
3747 type_t *type = skip_typeref(declaration->type);
3748 if(is_type_function(type)) {
3749 get_function_entity(declaration);
3751 create_global_variable(declaration);
3755 /* second pass: create code */
3756 declaration = context->declarations;
3757 for( ; declaration != NULL; declaration = declaration->next) {
3758 if(declaration->namespc != NAMESPACE_NORMAL)
3760 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
3761 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
3763 if(declaration->symbol == NULL)
3766 type_t *type = declaration->type;
3767 if(type->kind != TYPE_FUNCTION)
3770 create_function(declaration);
3774 void init_ast2firm(void)
3776 obstack_init(&asm_obst);
3777 init_atomic_modes();
3779 /* create idents for all known runtime functions */
3780 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
3781 predef_idents[rts_data[i].id] = new_id_from_str(rts_data[i].name);
3785 void exit_ast2firm(void)
3787 obstack_free(&asm_obst, NULL);
3790 void translation_unit_to_firm(translation_unit_t *unit)
3792 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
3793 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
3794 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
3796 ir_type_int = get_ir_type(type_int);
3797 ir_type_const_char = get_ir_type(type_const_char);
3798 ir_type_wchar_t = get_ir_type(type_wchar_t);
3799 ir_type_void = get_ir_type(type_int); /* we don't have a real void
3802 type_void->base.firm_type = ir_type_void;
3804 /* just to be sure */
3805 continue_label = NULL;
3807 current_switch_cond = NULL;
3809 context_to_firm(&unit->context);