2 * This file is part of cparser.
3 * Copyright (C) 2007-2009 Matthias Braun <matze@braunis.de>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
27 #include <libfirm/firm.h>
28 #include <libfirm/adt/obst.h>
29 #include <libfirm/be.h>
33 #include "adt/error.h"
34 #include "adt/array.h"
42 #include "diagnostic.h"
43 #include "lang_features.h"
45 #include "type_hash.h"
47 #include "walk_statements.h"
49 #include "entitymap_t.h"
50 #include "driver/firm_opt.h"
51 #include "driver/firm_cmdline.h"
53 typedef struct trampoline_region trampoline_region;
54 struct trampoline_region {
55 ir_entity *function; /**< The function that is called by this trampoline */
56 ir_entity *region; /**< created region for the trampoline */
59 static const backend_params *be_params;
61 static ir_type *ir_type_char;
62 static ir_type *ir_type_const_char;
63 static ir_type *ir_type_wchar_t;
64 static ir_type *ir_type_void;
65 static ir_type *ir_type_int;
67 /* architecture specific floating point arithmetic mode (if any) */
68 static ir_mode *mode_float_arithmetic;
70 /* alignment of stack parameters */
71 static unsigned stack_param_align;
73 static int next_value_number_function;
74 static ir_node *continue_label;
75 static ir_node *break_label;
76 static ir_node *current_switch_cond;
77 static bool saw_default_label;
78 static label_t **all_labels;
79 static entity_t **inner_functions;
80 static ir_node *ijmp_list;
81 static bool constant_folding;
82 static bool initializer_use_bitfield_basetype;
84 extern bool have_const_functions;
86 static const entity_t *current_function_entity;
87 static ir_node *current_function_name;
88 static ir_node *current_funcsig;
89 static switch_statement_t *current_switch;
90 static ir_graph *current_function;
91 static translation_unit_t *current_translation_unit;
92 static trampoline_region *current_trampolines;
93 static ir_type *current_outer_frame;
94 static ir_type *current_outer_value_type;
95 static ir_node *current_static_link;
97 static entitymap_t entitymap;
99 static struct obstack asm_obst;
101 typedef enum declaration_kind_t {
102 DECLARATION_KIND_UNKNOWN,
103 DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
104 DECLARATION_KIND_GLOBAL_VARIABLE,
105 DECLARATION_KIND_LOCAL_VARIABLE,
106 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
107 DECLARATION_KIND_PARAMETER,
108 DECLARATION_KIND_PARAMETER_ENTITY,
109 DECLARATION_KIND_FUNCTION,
110 DECLARATION_KIND_COMPOUND_MEMBER,
111 DECLARATION_KIND_INNER_FUNCTION
112 } declaration_kind_t;
114 static ir_mode *get_ir_mode_storage(type_t *type);
116 * get arithmetic mode for a type. This is different from get_ir_mode_storage,
117 * int that it returns bigger modes for floating point on some platforms
118 * (x87 internally does arithemtic with 80bits)
120 static ir_mode *get_ir_mode_arithmetic(type_t *type);
122 static ir_type *get_ir_type_incomplete(type_t *type);
124 static void enqueue_inner_function(entity_t *entity)
126 if (inner_functions == NULL)
127 inner_functions = NEW_ARR_F(entity_t *, 0);
128 ARR_APP1(entity_t*, inner_functions, entity);
131 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
133 const entity_t *entity = get_irg_loc_description(irg, pos);
135 if (entity != NULL) {
136 warningf(&entity->base.source_position,
137 "%s '%#T' might be used uninitialized",
138 get_entity_kind_name(entity->kind),
139 entity->declaration.type, entity->base.symbol);
141 return new_r_Unknown(irg, mode);
144 static const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
146 const source_position_t *pos = (const source_position_t*) dbg;
151 return pos->input_name;
154 static dbg_info *get_dbg_info(const source_position_t *pos)
156 return (dbg_info*) pos;
159 static ir_mode *atomic_modes[ATOMIC_TYPE_LAST+1];
161 static ir_mode *mode_int, *mode_uint;
163 static ir_node *_expression_to_firm(const expression_t *expression);
164 static ir_node *expression_to_firm(const expression_t *expression);
165 static void create_local_declaration(entity_t *entity);
167 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
169 unsigned flags = get_atomic_type_flags(kind);
170 unsigned size = get_atomic_type_size(kind);
171 if ( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
172 && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
175 unsigned bit_size = size * 8;
176 bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
177 unsigned modulo_shift;
178 ir_mode_arithmetic arithmetic;
180 if (flags & ATOMIC_TYPE_FLAG_INTEGER) {
181 assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
182 snprintf(name, sizeof(name), "%s%u", is_signed ? "I" : "U",
184 sort = irms_int_number;
185 arithmetic = irma_twos_complement;
186 modulo_shift = bit_size < machine_size ? machine_size : bit_size;
188 assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
189 snprintf(name, sizeof(name), "F%u", bit_size);
190 sort = irms_float_number;
191 arithmetic = irma_ieee754;
194 return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
202 * Initialises the atomic modes depending on the machine size.
204 static void init_atomic_modes(void)
206 for (int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
207 atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
209 mode_int = atomic_modes[ATOMIC_TYPE_INT];
210 mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
212 /* there's no real void type in firm */
213 atomic_modes[ATOMIC_TYPE_VOID] = atomic_modes[ATOMIC_TYPE_CHAR];
215 /* initialize pointer modes */
217 ir_mode_sort sort = irms_reference;
218 unsigned bit_size = machine_size;
220 ir_mode_arithmetic arithmetic = irma_twos_complement;
221 unsigned modulo_shift
222 = bit_size < machine_size ? machine_size : bit_size;
224 snprintf(name, sizeof(name), "p%u", machine_size);
225 ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
228 set_reference_mode_signed_eq(ptr_mode, atomic_modes[get_intptr_kind()]);
229 set_reference_mode_unsigned_eq(ptr_mode, atomic_modes[get_uintptr_kind()]);
231 /* Hmm, pointers should be machine size */
232 set_modeP_data(ptr_mode);
233 set_modeP_code(ptr_mode);
236 ir_mode *get_atomic_mode(atomic_type_kind_t kind)
238 assert(kind <= ATOMIC_TYPE_LAST);
239 return atomic_modes[kind];
242 static ir_node *get_vla_size(array_type_t *const type)
244 ir_node *size_node = type->size_node;
245 if (size_node == NULL) {
246 size_node = expression_to_firm(type->size_expression);
247 type->size_node = size_node;
253 * Return a node representing the size of a type.
255 static ir_node *get_type_size_node(type_t *type)
257 type = skip_typeref(type);
259 if (is_type_array(type) && type->array.is_vla) {
260 ir_node *size_node = get_vla_size(&type->array);
261 ir_node *elem_size = get_type_size_node(type->array.element_type);
262 ir_mode *mode = get_irn_mode(size_node);
263 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
267 ir_mode *mode = get_ir_mode_storage(type_size_t);
269 sym.type_p = get_ir_type(type);
270 return new_SymConst(mode, sym, symconst_type_size);
273 static unsigned count_parameters(const function_type_t *function_type)
277 function_parameter_t *parameter = function_type->parameters;
278 for ( ; parameter != NULL; parameter = parameter->next) {
286 * Creates a Firm type for an atomic type
288 static ir_type *create_atomic_type(atomic_type_kind_t akind)
290 ir_mode *mode = atomic_modes[akind];
291 ident *id = get_mode_ident(mode);
292 ir_type *irtype = new_type_primitive(id, mode);
293 il_alignment_t alignment = get_atomic_type_alignment(akind);
295 set_type_alignment_bytes(irtype, alignment);
301 * Creates a Firm type for a complex type
303 static ir_type *create_complex_type(const complex_type_t *type)
305 atomic_type_kind_t kind = type->akind;
306 ir_mode *mode = atomic_modes[kind];
307 ident *id = get_mode_ident(mode);
311 /* FIXME: finish the array */
316 * Creates a Firm type for an imaginary type
318 static ir_type *create_imaginary_type(imaginary_type_t *type)
320 atomic_type_kind_t kind = type->akind;
321 ir_mode *mode = atomic_modes[kind];
322 ident *id = get_mode_ident(mode);
323 ir_type *irtype = new_type_primitive(id, mode);
324 il_alignment_t alignment = get_type_alignment((type_t*) type);
326 set_type_alignment_bytes(irtype, alignment);
332 * return type of a parameter (and take transparent union gnu extension into
335 static type_t *get_parameter_type(type_t *orig_type)
337 type_t *type = skip_typeref(orig_type);
338 if (is_type_union(type)
339 && get_type_modifiers(orig_type) & DM_TRANSPARENT_UNION) {
340 compound_t *compound = type->compound.compound;
341 type = compound->members.entities->declaration.type;
347 static ir_type *create_method_type(const function_type_t *function_type, bool for_closure)
349 type_t *return_type = skip_typeref(function_type->return_type);
351 ident *id = id_unique("functiontype.%u");
352 int n_parameters = count_parameters(function_type) + (for_closure ? 1 : 0);
353 int n_results = return_type == type_void ? 0 : 1;
354 ir_type *irtype = new_type_method(id, n_parameters, n_results);
356 if (return_type != type_void) {
357 ir_type *restype = get_ir_type(return_type);
358 set_method_res_type(irtype, 0, restype);
361 function_parameter_t *parameter = function_type->parameters;
364 ir_type *p_irtype = get_ir_type(type_void_ptr);
365 set_method_param_type(irtype, n, p_irtype);
368 for ( ; parameter != NULL; parameter = parameter->next) {
369 type_t *type = get_parameter_type(parameter->type);
370 ir_type *p_irtype = get_ir_type(type);
371 set_method_param_type(irtype, n, p_irtype);
375 bool is_variadic = function_type->variadic;
378 set_method_variadicity(irtype, variadicity_variadic);
380 unsigned cc = get_method_calling_convention(irtype);
381 switch (function_type->calling_convention) {
382 case CC_DEFAULT: /* unspecified calling convention, equal to one of the other, typically cdecl */
385 set_method_calling_convention(irtype, SET_CDECL(cc));
392 /* only non-variadic function can use stdcall, else use cdecl */
393 set_method_calling_convention(irtype, SET_STDCALL(cc));
399 /* only non-variadic function can use fastcall, else use cdecl */
400 set_method_calling_convention(irtype, SET_FASTCALL(cc));
404 /* Hmm, leave default, not accepted by the parser yet. */
409 set_method_calling_convention(irtype, get_method_calling_convention(irtype) | cc_this_call);
414 static ir_type *create_pointer_type(pointer_type_t *type)
416 type_t *points_to = type->points_to;
417 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
418 ir_type *ir_type = new_type_pointer(id_unique("pointer.%u"),
419 ir_points_to, mode_P_data);
424 static ir_type *create_reference_type(reference_type_t *type)
426 type_t *refers_to = type->refers_to;
427 ir_type *ir_refers_to = get_ir_type_incomplete(refers_to);
428 ir_type *ir_type = new_type_pointer(id_unique("reference.%u"),
429 ir_refers_to, mode_P_data);
434 static ir_type *create_array_type(array_type_t *type)
436 type_t *element_type = type->element_type;
437 ir_type *ir_element_type = get_ir_type(element_type);
439 ident *id = id_unique("array.%u");
440 ir_type *ir_type = new_type_array(id, 1, ir_element_type);
442 const int align = get_type_alignment_bytes(ir_element_type);
443 set_type_alignment_bytes(ir_type, align);
445 if (type->size_constant) {
446 int n_elements = type->size;
448 set_array_bounds_int(ir_type, 0, 0, n_elements);
450 size_t elemsize = get_type_size_bytes(ir_element_type);
451 if (elemsize % align > 0) {
452 elemsize += align - (elemsize % align);
454 set_type_size_bytes(ir_type, n_elements * elemsize);
456 set_array_lower_bound_int(ir_type, 0, 0);
458 set_type_state(ir_type, layout_fixed);
464 * Return the signed integer type of size bits.
466 * @param size the size
468 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
471 static ir_mode *s_modes[64 + 1] = {NULL, };
475 if (size <= 0 || size > 64)
478 mode = s_modes[size];
482 snprintf(name, sizeof(name), "bf_I%u", size);
483 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
484 size <= 32 ? 32 : size );
485 s_modes[size] = mode;
489 snprintf(name, sizeof(name), "I%u", size);
490 ident *id = new_id_from_str(name);
491 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
492 res = new_d_type_primitive(id_mangle_u(get_type_ident(base_tp), id), mode, dbgi);
493 set_primitive_base_type(res, base_tp);
499 * Return the unsigned integer type of size bits.
501 * @param size the size
503 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
506 static ir_mode *u_modes[64 + 1] = {NULL, };
510 if (size <= 0 || size > 64)
513 mode = u_modes[size];
517 snprintf(name, sizeof(name), "bf_U%u", size);
518 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
519 size <= 32 ? 32 : size );
520 u_modes[size] = mode;
525 snprintf(name, sizeof(name), "U%u", size);
526 ident *id = new_id_from_str(name);
527 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
528 res = new_d_type_primitive(id_mangle_u(get_type_ident(base_tp), id), mode, dbgi);
529 set_primitive_base_type(res, base_tp);
534 static ir_type *create_bitfield_type(bitfield_type_t *const type)
536 type_t *base = skip_typeref(type->base_type);
537 assert(base->kind == TYPE_ATOMIC || base->kind == TYPE_ENUM);
538 ir_type *irbase = get_ir_type(base);
540 unsigned size = type->bit_size;
542 assert(!is_type_float(base));
543 if (is_type_signed(base)) {
544 return get_signed_int_type_for_bit_size(irbase, size);
546 return get_unsigned_int_type_for_bit_size(irbase, size);
550 #define INVALID_TYPE ((ir_type_ptr)-1)
553 COMPOUND_IS_STRUCT = false,
554 COMPOUND_IS_UNION = true
558 * Construct firm type from ast struct type.
560 static ir_type *create_compound_type(compound_type_t *type,
561 bool incomplete, bool is_union)
563 compound_t *compound = type->compound;
565 if (compound->irtype != NULL && (compound->irtype_complete || incomplete)) {
566 return compound->irtype;
569 symbol_t *symbol = compound->base.symbol;
571 if (symbol != NULL) {
572 id = new_id_from_str(symbol->string);
575 id = id_unique("__anonymous_union.%u");
577 id = id_unique("__anonymous_struct.%u");
580 dbg_info *dbgi = get_dbg_info(&compound->base.source_position);
584 irtype = new_d_type_union(id, dbgi);
586 irtype = new_d_type_struct(id, dbgi);
589 compound->irtype_complete = false;
590 compound->irtype = irtype;
596 layout_union_type(type);
598 layout_struct_type(type);
601 compound->irtype_complete = true;
603 entity_t *entry = compound->members.entities;
604 for ( ; entry != NULL; entry = entry->base.next) {
605 if (entry->kind != ENTITY_COMPOUND_MEMBER)
608 symbol_t *symbol = entry->base.symbol;
609 type_t *entry_type = entry->declaration.type;
611 if (symbol == NULL) {
612 /* anonymous bitfield member, skip */
613 if (entry_type->kind == TYPE_BITFIELD)
615 assert(entry_type->kind == TYPE_COMPOUND_STRUCT
616 || entry_type->kind == TYPE_COMPOUND_UNION);
617 ident = id_unique("anon.%u");
619 ident = new_id_from_str(symbol->string);
622 dbg_info *dbgi = get_dbg_info(&entry->base.source_position);
624 ir_type *entry_irtype = get_ir_type(entry_type);
625 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
627 set_entity_offset(entity, entry->compound_member.offset);
628 set_entity_offset_bits_remainder(entity,
629 entry->compound_member.bit_offset);
631 assert(entry->declaration.kind == DECLARATION_KIND_UNKNOWN);
632 entry->declaration.kind = DECLARATION_KIND_COMPOUND_MEMBER;
633 entry->compound_member.entity = entity;
636 set_type_alignment_bytes(irtype, compound->alignment);
637 set_type_size_bytes(irtype, compound->size);
638 set_type_state(irtype, layout_fixed);
643 static ir_type *create_enum_type(enum_type_t *const type)
645 type->base.firm_type = ir_type_int;
647 ir_mode *const mode = mode_int;
648 tarval *const one = get_mode_one(mode);
649 tarval * tv_next = get_tarval_null(mode);
651 bool constant_folding_old = constant_folding;
652 constant_folding = true;
654 enum_t *enume = type->enume;
655 entity_t *entry = enume->base.next;
656 for (; entry != NULL; entry = entry->base.next) {
657 if (entry->kind != ENTITY_ENUM_VALUE)
660 expression_t *const init = entry->enum_value.value;
662 ir_node *const cnst = expression_to_firm(init);
663 if (!is_Const(cnst)) {
664 panic("couldn't fold constant");
666 tv_next = get_Const_tarval(cnst);
668 entry->enum_value.tv = tv_next;
669 tv_next = tarval_add(tv_next, one);
672 constant_folding = constant_folding_old;
674 return create_atomic_type(type->akind);
677 static ir_type *get_ir_type_incomplete(type_t *type)
679 assert(type != NULL);
680 type = skip_typeref(type);
682 if (type->base.firm_type != NULL) {
683 assert(type->base.firm_type != INVALID_TYPE);
684 return type->base.firm_type;
687 switch (type->kind) {
688 case TYPE_COMPOUND_STRUCT:
689 return create_compound_type(&type->compound, true, COMPOUND_IS_STRUCT);
690 case TYPE_COMPOUND_UNION:
691 return create_compound_type(&type->compound, true, COMPOUND_IS_UNION);
693 return get_ir_type(type);
697 ir_type *get_ir_type(type_t *type)
699 assert(type != NULL);
701 type = skip_typeref(type);
703 if (type->base.firm_type != NULL) {
704 assert(type->base.firm_type != INVALID_TYPE);
705 return type->base.firm_type;
708 ir_type *firm_type = NULL;
709 switch (type->kind) {
711 /* Happens while constant folding, when there was an error */
712 return create_atomic_type(ATOMIC_TYPE_VOID);
715 firm_type = create_atomic_type(type->atomic.akind);
718 firm_type = create_complex_type(&type->complex);
721 firm_type = create_imaginary_type(&type->imaginary);
724 firm_type = create_method_type(&type->function, false);
727 firm_type = create_pointer_type(&type->pointer);
730 firm_type = create_reference_type(&type->reference);
733 firm_type = create_array_type(&type->array);
735 case TYPE_COMPOUND_STRUCT:
736 firm_type = create_compound_type(&type->compound, false, COMPOUND_IS_STRUCT);
738 case TYPE_COMPOUND_UNION:
739 firm_type = create_compound_type(&type->compound, false, COMPOUND_IS_UNION);
742 firm_type = create_enum_type(&type->enumt);
745 firm_type = get_ir_type(type->builtin.real_type);
748 firm_type = create_bitfield_type(&type->bitfield);
756 if (firm_type == NULL)
757 panic("unknown type found");
759 type->base.firm_type = firm_type;
763 static ir_mode *get_ir_mode_storage(type_t *type)
765 ir_type *irtype = get_ir_type(type);
767 /* firm doesn't report a mode for arrays somehow... */
768 if (is_Array_type(irtype)) {
772 ir_mode *mode = get_type_mode(irtype);
773 assert(mode != NULL);
777 static ir_mode *get_ir_mode_arithmetic(type_t *type)
779 ir_mode *mode = get_ir_mode_storage(type);
780 if (mode_is_float(mode) && mode_float_arithmetic != NULL) {
781 return mode_float_arithmetic;
787 /** Names of the runtime functions. */
788 static const struct {
789 int id; /**< the rts id */
790 int n_res; /**< number of return values */
791 const char *name; /**< the name of the rts function */
792 int n_params; /**< number of parameters */
793 unsigned flags; /**< language flags */
795 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
796 { rts_abort, 0, "abort", 0, _C89 },
797 { rts_alloca, 1, "alloca", 1, _ALL },
798 { rts_abs, 1, "abs", 1, _C89 },
799 { rts_labs, 1, "labs", 1, _C89 },
800 { rts_llabs, 1, "llabs", 1, _C99 },
801 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
803 { rts_fabs, 1, "fabs", 1, _C89 },
804 { rts_sqrt, 1, "sqrt", 1, _C89 },
805 { rts_cbrt, 1, "cbrt", 1, _C99 },
806 { rts_exp, 1, "exp", 1, _C89 },
807 { rts_exp2, 1, "exp2", 1, _C89 },
808 { rts_exp10, 1, "exp10", 1, _GNUC },
809 { rts_log, 1, "log", 1, _C89 },
810 { rts_log2, 1, "log2", 1, _C89 },
811 { rts_log10, 1, "log10", 1, _C89 },
812 { rts_pow, 1, "pow", 2, _C89 },
813 { rts_sin, 1, "sin", 1, _C89 },
814 { rts_cos, 1, "cos", 1, _C89 },
815 { rts_tan, 1, "tan", 1, _C89 },
816 { rts_asin, 1, "asin", 1, _C89 },
817 { rts_acos, 1, "acos", 1, _C89 },
818 { rts_atan, 1, "atan", 1, _C89 },
819 { rts_sinh, 1, "sinh", 1, _C89 },
820 { rts_cosh, 1, "cosh", 1, _C89 },
821 { rts_tanh, 1, "tanh", 1, _C89 },
823 { rts_fabsf, 1, "fabsf", 1, _C99 },
824 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
825 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
826 { rts_expf, 1, "expf", 1, _C99 },
827 { rts_exp2f, 1, "exp2f", 1, _C99 },
828 { rts_exp10f, 1, "exp10f", 1, _GNUC },
829 { rts_logf, 1, "logf", 1, _C99 },
830 { rts_log2f, 1, "log2f", 1, _C99 },
831 { rts_log10f, 1, "log10f", 1, _C99 },
832 { rts_powf, 1, "powf", 2, _C99 },
833 { rts_sinf, 1, "sinf", 1, _C99 },
834 { rts_cosf, 1, "cosf", 1, _C99 },
835 { rts_tanf, 1, "tanf", 1, _C99 },
836 { rts_asinf, 1, "asinf", 1, _C99 },
837 { rts_acosf, 1, "acosf", 1, _C99 },
838 { rts_atanf, 1, "atanf", 1, _C99 },
839 { rts_sinhf, 1, "sinhf", 1, _C99 },
840 { rts_coshf, 1, "coshf", 1, _C99 },
841 { rts_tanhf, 1, "tanhf", 1, _C99 },
843 { rts_fabsl, 1, "fabsl", 1, _C99 },
844 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
845 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
846 { rts_expl, 1, "expl", 1, _C99 },
847 { rts_exp2l, 1, "exp2l", 1, _C99 },
848 { rts_exp10l, 1, "exp10l", 1, _GNUC },
849 { rts_logl, 1, "logl", 1, _C99 },
850 { rts_log2l, 1, "log2l", 1, _C99 },
851 { rts_log10l, 1, "log10l", 1, _C99 },
852 { rts_powl, 1, "powl", 2, _C99 },
853 { rts_sinl, 1, "sinl", 1, _C99 },
854 { rts_cosl, 1, "cosl", 1, _C99 },
855 { rts_tanl, 1, "tanl", 1, _C99 },
856 { rts_asinl, 1, "asinl", 1, _C99 },
857 { rts_acosl, 1, "acosl", 1, _C99 },
858 { rts_atanl, 1, "atanl", 1, _C99 },
859 { rts_sinhl, 1, "sinhl", 1, _C99 },
860 { rts_coshl, 1, "coshl", 1, _C99 },
861 { rts_tanhl, 1, "tanhl", 1, _C99 },
863 { rts_strcmp, 1, "strcmp", 2, _C89 },
864 { rts_strncmp, 1, "strncmp", 3, _C89 },
865 { rts_strcpy, 1, "strcpy", 2, _C89 },
866 { rts_strlen, 1, "strlen", 1, _C89 },
867 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
868 { rts_mempcpy, 1, "mempcpy", 3, _GNUC },
869 { rts_memmove, 1, "memmove", 3, _C89 }, /* HMM, man say its C99 */
870 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
871 { rts_memcmp, 1, "memcmp", 3, _C89 }, /* HMM, man say its C99 */
874 static ident *rts_idents[lengthof(rts_data)];
876 static ident* (*create_ld_ident)(entity_t*) = create_name_linux_elf;
879 * Handle GNU attributes for entities
881 * @param ent the entity
882 * @param decl the routine declaration
884 static void handle_decl_modifiers(ir_entity *irentity, entity_t *entity)
886 assert(is_declaration(entity));
887 decl_modifiers_t modifiers = entity->declaration.modifiers;
888 if (modifiers & DM_PURE) {
889 /* TRUE if the declaration includes the GNU
890 __attribute__((pure)) specifier. */
891 set_entity_additional_property(irentity, mtp_property_pure);
893 if (modifiers & DM_CONST) {
894 set_entity_additional_property(irentity, mtp_property_const);
895 have_const_functions = true;
897 if (modifiers & DM_USED) {
898 /* TRUE if the declaration includes the GNU
899 __attribute__((used)) specifier. */
900 set_entity_stickyness(irentity, stickyness_sticky);
904 static bool is_main(entity_t *entity)
906 static symbol_t *sym_main = NULL;
907 if (sym_main == NULL) {
908 sym_main = symbol_table_insert("main");
911 if (entity->base.symbol != sym_main)
913 /* must be in outermost scope */
914 if (entity->base.parent_scope != ¤t_translation_unit->scope)
921 * Creates an entity representing a function.
923 * @param declaration the function declaration
924 * @param owner_type the owner type of this function, NULL
925 * for global functions
927 static ir_entity *get_function_entity(entity_t *entity, ir_type *owner_type)
929 assert(entity->kind == ENTITY_FUNCTION);
930 if (entity->function.irentity != NULL) {
931 return entity->function.irentity;
934 if (is_main(entity)) {
935 /* force main to C linkage */
936 type_t *type = entity->declaration.type;
937 assert(is_type_function(type));
938 if (type->function.linkage != LINKAGE_C) {
939 type_t *new_type = duplicate_type(type);
940 new_type->function.linkage = LINKAGE_C;
941 type = identify_new_type(new_type);
942 entity->declaration.type = type;
946 symbol_t *symbol = entity->base.symbol;
947 ident *id = new_id_from_str(symbol->string);
950 /* already an entity defined? */
951 ir_entity *irentity = entitymap_get(&entitymap, symbol);
952 bool const has_body = entity->function.statement != NULL;
953 if (irentity != NULL) {
954 if (get_entity_visibility(irentity) == visibility_external_allocated
956 set_entity_visibility(irentity, visibility_external_visible);
961 ir_type *ir_type_method;
962 if (entity->function.need_closure)
963 ir_type_method = create_method_type(&entity->declaration.type->function, true);
965 ir_type_method = get_ir_type(entity->declaration.type);
967 bool nested_function = false;
968 if (owner_type == NULL)
969 owner_type = get_glob_type();
971 nested_function = true;
973 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
974 irentity = new_d_entity(owner_type, id, ir_type_method, dbgi);
978 ld_id = id_unique("inner.%u");
980 ld_id = create_ld_ident(entity);
981 set_entity_ld_ident(irentity, ld_id);
983 handle_decl_modifiers(irentity, entity);
985 if (! nested_function) {
986 /* static inline => local
987 * extern inline => local
988 * inline without definition => local
989 * inline with definition => external_visible */
990 storage_class_tag_t const storage_class
991 = (storage_class_tag_t) entity->declaration.storage_class;
992 bool const is_inline = entity->function.is_inline;
994 if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
995 set_entity_visibility(irentity, visibility_external_visible);
996 } else if (storage_class == STORAGE_CLASS_STATIC ||
997 (is_inline && has_body)) {
999 /* this entity was declared, but is defined nowhere */
1000 set_entity_peculiarity(irentity, peculiarity_description);
1002 set_entity_visibility(irentity, visibility_local);
1003 } else if (has_body) {
1004 set_entity_visibility(irentity, visibility_external_visible);
1006 set_entity_visibility(irentity, visibility_external_allocated);
1009 /* nested functions are always local */
1010 set_entity_visibility(irentity, visibility_local);
1012 set_entity_allocation(irentity, allocation_static);
1014 /* We should check for file scope here, but as long as we compile C only
1015 this is not needed. */
1016 if (! firm_opt.freestanding && !has_body) {
1017 /* check for a known runtime function */
1018 for (size_t i = 0; i < lengthof(rts_data); ++i) {
1019 if (id != rts_idents[i])
1022 /* ignore those rts functions not necessary needed for current mode */
1023 if ((c_mode & rts_data[i].flags) == 0)
1025 assert(rts_entities[rts_data[i].id] == NULL);
1026 rts_entities[rts_data[i].id] = irentity;
1030 entitymap_insert(&entitymap, symbol, irentity);
1033 entity->declaration.kind = DECLARATION_KIND_FUNCTION;
1034 entity->function.irentity = irentity;
1039 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1041 ir_mode *value_mode = get_irn_mode(value);
1043 if (value_mode == dest_mode || is_Bad(value))
1046 if (dest_mode == mode_b) {
1047 ir_node *zero = new_Const(get_mode_null(value_mode));
1048 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1049 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1053 return new_d_Conv(dbgi, value, dest_mode);
1057 * Creates a Const node representing a constant.
1059 static ir_node *const_to_firm(const const_expression_t *cnst)
1061 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1062 type_t *type = skip_typeref(cnst->base.type);
1063 ir_mode *mode = get_ir_mode_storage(type);
1068 if (mode_is_float(mode)) {
1069 tv = new_tarval_from_double(cnst->v.float_value, mode);
1071 if (mode_is_signed(mode)) {
1072 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1074 len = snprintf(buf, sizeof(buf), "%llu",
1075 (unsigned long long) cnst->v.int_value);
1077 tv = new_tarval_from_str(buf, len, mode);
1080 ir_node *res = new_d_Const(dbgi, tv);
1081 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
1082 return create_conv(dbgi, res, mode_arith);
1086 * Creates a Const node representing a character constant.
1088 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1090 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1091 ir_mode *mode = get_ir_mode_arithmetic(cnst->base.type);
1094 size_t const size = cnst->v.character.size;
1095 if (size == 1 && char_is_signed) {
1096 v = (signed char)cnst->v.character.begin[0];
1099 for (size_t i = 0; i < size; ++i) {
1100 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1104 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1105 tarval *tv = new_tarval_from_str(buf, len, mode);
1107 return new_d_Const(dbgi, tv);
1111 * Creates a Const node representing a wide character constant.
1113 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1115 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1116 ir_mode *mode = get_ir_mode_arithmetic(cnst->base.type);
1118 long long int v = cnst->v.wide_character.begin[0];
1121 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1122 tarval *tv = new_tarval_from_str(buf, len, mode);
1124 return new_d_Const(dbgi, tv);
1128 * Allocate an area of size bytes aligned at alignment
1131 static ir_entity *alloc_trampoline(ir_type *frame_type, int size, unsigned alignment) {
1132 static unsigned area_cnt = 0;
1135 snprintf(buf, sizeof(buf), "trampolin%u", area_cnt++);
1136 ident *name = new_id_from_str(buf);
1138 ir_type *tp = new_type_array(id_mangle_u(get_type_ident(frame_type), name), 1, ir_type_char);
1139 set_array_bounds_int(tp, 0, 0, size);
1140 set_type_alignment_bytes(tp, alignment);
1142 ir_entity *area = new_entity(frame_type, name, tp);
1144 /* mark this entity as compiler generated */
1145 set_entity_compiler_generated(area, 1);
1150 * Return a node representing a trampoline region
1151 * for a given function entity.
1153 * @param dbgi debug info
1154 * @param entity the function entity
1156 static ir_node *get_trampoline_region(dbg_info *dbgi, ir_entity *entity)
1158 ir_entity *region = NULL;
1161 if (current_trampolines != NULL) {
1162 for (i = ARR_LEN(current_trampolines) - 1; i >= 0; --i) {
1163 if (current_trampolines[i].function == entity) {
1164 region = current_trampolines[i].region;
1169 current_trampolines = NEW_ARR_F(trampoline_region, 0);
1171 ir_graph *irg = current_ir_graph;
1172 if (region == NULL) {
1173 /* create a new region */
1174 ir_type *frame_tp = get_irg_frame_type(irg);
1175 trampoline_region reg;
1176 reg.function = entity;
1178 reg.region = alloc_trampoline(frame_tp,
1179 be_params->trampoline_size,
1180 be_params->trampoline_align);
1181 ARR_APP1(trampoline_region, current_trampolines, reg);
1182 region = reg.region;
1184 return new_d_simpleSel(dbgi, get_irg_no_mem(irg), get_irg_frame(irg),
1190 * Creates a SymConst for a given entity.
1192 * @param dbgi debug info
1193 * @param mode the (reference) mode for the SymConst
1194 * @param entity the entity
1196 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1199 assert(entity != NULL);
1200 union symconst_symbol sym;
1201 sym.entity_p = entity;
1202 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1206 * Creates a trampoline for a function represented by an entity.
1208 * @param dbgi debug info
1209 * @param mode the (reference) mode for the function address
1210 * @param entity the function entity
1212 static ir_node *create_trampoline(dbg_info *dbgi, ir_mode *mode,
1215 assert(entity != NULL);
1217 in[0] = get_trampoline_region(dbgi, entity);
1218 in[1] = create_symconst(dbgi, mode, entity);
1219 in[2] = get_irg_frame(current_ir_graph);
1221 ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_inner_trampoline, get_unknown_type());
1222 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1223 return new_Proj(irn, mode, pn_Builtin_1_result);
1227 * Creates a SymConst node representing a string constant.
1229 * @param src_pos the source position of the string constant
1230 * @param id_prefix a prefix for the name of the generated string constant
1231 * @param value the value of the string constant
1233 static ir_node *string_to_firm(const source_position_t *const src_pos,
1234 const char *const id_prefix,
1235 const string_t *const value)
1237 ir_type *const global_type = get_glob_type();
1238 dbg_info *const dbgi = get_dbg_info(src_pos);
1239 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1240 ir_type_const_char, dbgi);
1242 ident *const id = id_unique(id_prefix);
1243 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1244 set_entity_ld_ident(entity, id);
1245 set_entity_variability(entity, variability_constant);
1246 set_entity_allocation(entity, allocation_static);
1247 set_entity_visibility(entity, visibility_local);
1249 ir_type *const elem_type = ir_type_const_char;
1250 ir_mode *const mode = get_type_mode(elem_type);
1252 const char* const string = value->begin;
1253 const size_t slen = value->size;
1255 set_array_lower_bound_int(type, 0, 0);
1256 set_array_upper_bound_int(type, 0, slen);
1257 set_type_size_bytes(type, slen);
1258 set_type_state(type, layout_fixed);
1260 ir_initializer_t *initializer = create_initializer_compound(slen);
1261 for (size_t i = 0; i < slen; ++i) {
1262 tarval *tv = new_tarval_from_long(string[i], mode);
1263 ir_initializer_t *val = create_initializer_tarval(tv);
1264 set_initializer_compound_value(initializer, i, val);
1266 set_entity_initializer(entity, initializer);
1268 return create_symconst(dbgi, mode_P_data, entity);
1272 * Creates a SymConst node representing a string literal.
1274 * @param literal the string literal
1276 static ir_node *string_literal_to_firm(
1277 const string_literal_expression_t* literal)
1279 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1284 * Creates a SymConst node representing a wide string literal.
1286 * @param literal the wide string literal
1288 static ir_node *wide_string_literal_to_firm(
1289 const wide_string_literal_expression_t* const literal)
1291 ir_type *const global_type = get_glob_type();
1292 ir_type *const elem_type = ir_type_wchar_t;
1293 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1294 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1297 ident *const id = id_unique("Lstr.%u");
1298 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1299 set_entity_ld_ident(entity, id);
1300 set_entity_variability(entity, variability_constant);
1301 set_entity_allocation(entity, allocation_static);
1303 ir_mode *const mode = get_type_mode(elem_type);
1305 const wchar_rep_t *const string = literal->value.begin;
1306 const size_t slen = literal->value.size;
1308 set_array_lower_bound_int(type, 0, 0);
1309 set_array_upper_bound_int(type, 0, slen);
1310 set_type_size_bytes(type, slen * get_mode_size_bytes(mode));
1311 set_type_state(type, layout_fixed);
1313 ir_initializer_t *initializer = create_initializer_compound(slen);
1314 for (size_t i = 0; i < slen; ++i) {
1315 tarval *tv = new_tarval_from_long(string[i], mode);
1316 ir_initializer_t *val = create_initializer_tarval(tv);
1317 set_initializer_compound_value(initializer, i, val);
1319 set_entity_initializer(entity, initializer);
1321 return create_symconst(dbgi, mode_P_data, entity);
1325 * Dereference an address.
1327 * @param dbgi debug info
1328 * @param type the type of the dereferenced result (the points_to type)
1329 * @param addr the address to dereference
1331 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1332 ir_node *const addr)
1334 ir_type *irtype = get_ir_type(type);
1335 if (is_compound_type(irtype)
1336 || is_Method_type(irtype)
1337 || is_Array_type(irtype)) {
1341 ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
1342 ? cons_volatile : cons_none;
1343 ir_mode *const mode = get_type_mode(irtype);
1344 ir_node *const memory = get_store();
1345 ir_node *const load = new_d_Load(dbgi, memory, addr, mode, flags);
1346 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1347 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1349 set_store(load_mem);
1351 ir_mode *const mode_arithmetic = get_ir_mode_arithmetic(type);
1352 return create_conv(dbgi, load_res, mode_arithmetic);
1356 * Creates a strict Conv (to the node's mode) if necessary.
1358 * @param dbgi debug info
1359 * @param node the node to strict conv
1361 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1363 ir_mode *mode = get_irn_mode(node);
1365 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1367 if (!mode_is_float(mode))
1370 /* check if there is already a Conv */
1371 if (is_Conv(node)) {
1372 /* convert it into a strict Conv */
1373 set_Conv_strict(node, 1);
1377 /* otherwise create a new one */
1378 return new_d_strictConv(dbgi, node, mode);
1382 * Returns the address of a global variable.
1384 * @param dbgi debug info
1385 * @param variable the variable
1387 static ir_node *get_global_var_address(dbg_info *const dbgi,
1388 const variable_t *const variable)
1390 ir_entity *const irentity = variable->v.entity;
1391 if (variable->thread_local) {
1392 ir_node *const no_mem = new_NoMem();
1393 ir_node *const tls = get_irg_tls(current_ir_graph);
1394 return new_d_simpleSel(dbgi, no_mem, tls, irentity);
1396 return create_symconst(dbgi, mode_P_data, irentity);
1401 * Returns the correct base address depending on whether it is a parameter or a
1402 * normal local variable.
1404 static ir_node *get_local_frame(ir_entity *const ent)
1406 ir_graph *const irg = current_ir_graph;
1407 const ir_type *const owner = get_entity_owner(ent);
1408 if (owner == current_outer_frame || owner == current_outer_value_type) {
1409 assert(current_static_link != NULL);
1410 return current_static_link;
1412 return get_irg_frame(irg);
1417 * Keep all memory edges of the given block.
1419 static void keep_all_memory(ir_node *block)
1421 ir_node *old = get_cur_block();
1423 set_cur_block(block);
1424 keep_alive(get_store());
1425 /* TODO: keep all memory edges from restricted pointers */
1429 static ir_node *reference_expression_enum_value_to_firm(
1430 const reference_expression_t *ref)
1432 entity_t *entity = ref->entity;
1433 type_t *type = skip_typeref(entity->enum_value.enum_type);
1434 /* make sure the type is constructed */
1435 (void) get_ir_type(type);
1437 return new_Const(entity->enum_value.tv);
1440 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1442 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1443 entity_t *entity = ref->entity;
1444 assert(is_declaration(entity));
1445 type_t *type = skip_typeref(entity->declaration.type);
1447 /* make sure the type is constructed */
1448 (void) get_ir_type(type);
1450 /* for gcc compatibility we have to produce (dummy) addresses for some
1452 if (entity->kind == ENTITY_FUNCTION && entity->function.btk != bk_none) {
1453 if (warning.other) {
1454 warningf(&ref->base.source_position,
1455 "taking address of builtin '%Y'", ref->entity->base.symbol);
1458 /* simply create a NULL pointer */
1459 ir_mode *mode = get_ir_mode_arithmetic(type_void_ptr);
1460 ir_node *res = new_Const_long(mode, 0);
1465 switch ((declaration_kind_t) entity->declaration.kind) {
1466 case DECLARATION_KIND_UNKNOWN:
1469 case DECLARATION_KIND_LOCAL_VARIABLE: {
1470 ir_mode *const mode = get_ir_mode_storage(type);
1471 ir_node *const value = get_value(entity->variable.v.value_number, mode);
1472 return create_conv(NULL, value, get_ir_mode_arithmetic(type));
1474 case DECLARATION_KIND_PARAMETER: {
1475 ir_mode *const mode = get_ir_mode_storage(type);
1476 ir_node *const value = get_value(entity->parameter.v.value_number,mode);
1477 return create_conv(NULL, value, get_ir_mode_arithmetic(type));
1479 case DECLARATION_KIND_FUNCTION: {
1480 ir_mode *const mode = get_ir_mode_storage(type);
1481 return create_symconst(dbgi, mode, entity->function.irentity);
1483 case DECLARATION_KIND_INNER_FUNCTION: {
1484 ir_mode *const mode = get_ir_mode_storage(type);
1485 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1486 /* inner function not using the closure */
1487 return create_symconst(dbgi, mode, entity->function.irentity);
1489 /* need trampoline here */
1490 return create_trampoline(dbgi, mode, entity->function.irentity);
1493 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1494 const variable_t *variable = &entity->variable;
1495 ir_node *const addr = get_global_var_address(dbgi, variable);
1496 return deref_address(dbgi, variable->base.type, addr);
1499 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1500 ir_entity *irentity = entity->variable.v.entity;
1501 ir_node *frame = get_local_frame(irentity);
1502 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1503 return deref_address(dbgi, entity->declaration.type, sel);
1505 case DECLARATION_KIND_PARAMETER_ENTITY: {
1506 ir_entity *irentity = entity->parameter.v.entity;
1507 ir_node *frame = get_local_frame(irentity);
1508 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1509 return deref_address(dbgi, entity->declaration.type, sel);
1512 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1513 return entity->variable.v.vla_base;
1515 case DECLARATION_KIND_COMPOUND_MEMBER:
1516 panic("not implemented reference type");
1519 panic("reference to declaration with unknown type found");
1522 static ir_node *reference_addr(const reference_expression_t *ref)
1524 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1525 entity_t *entity = ref->entity;
1526 assert(is_declaration(entity));
1528 switch((declaration_kind_t) entity->declaration.kind) {
1529 case DECLARATION_KIND_UNKNOWN:
1531 case DECLARATION_KIND_PARAMETER:
1532 case DECLARATION_KIND_LOCAL_VARIABLE:
1533 /* you can store to a local variable (so we don't panic but return NULL
1534 * as an indicator for no real address) */
1536 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1537 ir_node *const addr = get_global_var_address(dbgi, &entity->variable);
1540 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1541 ir_entity *irentity = entity->variable.v.entity;
1542 ir_node *frame = get_local_frame(irentity);
1543 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1547 case DECLARATION_KIND_PARAMETER_ENTITY: {
1548 ir_entity *irentity = entity->parameter.v.entity;
1549 ir_node *frame = get_local_frame(irentity);
1550 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1555 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1556 return entity->variable.v.vla_base;
1558 case DECLARATION_KIND_FUNCTION: {
1559 type_t *const type = skip_typeref(entity->declaration.type);
1560 ir_mode *const mode = get_ir_mode_storage(type);
1561 return create_symconst(dbgi, mode, entity->function.irentity);
1564 case DECLARATION_KIND_INNER_FUNCTION: {
1565 type_t *const type = skip_typeref(entity->declaration.type);
1566 ir_mode *const mode = get_ir_mode_storage(type);
1567 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1568 /* inner function not using the closure */
1569 return create_symconst(dbgi, mode, entity->function.irentity);
1571 /* need trampoline here */
1572 return create_trampoline(dbgi, mode, entity->function.irentity);
1576 case DECLARATION_KIND_COMPOUND_MEMBER:
1577 panic("not implemented reference type");
1580 panic("reference to declaration with unknown type found");
1584 * Generate an unary builtin.
1586 * @param kind the builtin kind to generate
1587 * @param op the operand
1588 * @param function_type the function type for the GNU builtin routine
1589 * @param db debug info
1591 static ir_node *gen_unary_builtin(ir_builtin_kind kind, expression_t *op, type_t *function_type, dbg_info *db)
1594 in[0] = expression_to_firm(op);
1596 ir_type *tp = get_ir_type(function_type);
1597 ir_type *res = get_method_res_type(tp, 0);
1598 ir_node *irn = new_d_Builtin(db, get_irg_no_mem(current_ir_graph), 1, in, kind, tp);
1599 set_irn_pinned(irn, op_pin_state_floats);
1600 return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result);
1604 * Generate a pinned unary builtin.
1606 * @param kind the builtin kind to generate
1607 * @param op the operand
1608 * @param function_type the function type for the GNU builtin routine
1609 * @param db debug info
1611 static ir_node *gen_unary_builtin_pinned(ir_builtin_kind kind, expression_t *op, type_t *function_type, dbg_info *db)
1614 in[0] = expression_to_firm(op);
1616 ir_type *tp = get_ir_type(function_type);
1617 ir_type *res = get_method_res_type(tp, 0);
1618 ir_node *mem = get_store();
1619 ir_node *irn = new_d_Builtin(db, mem, 1, in, kind, tp);
1620 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1621 return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result);
1626 * Generate an binary-void-return builtin.
1628 * @param kind the builtin kind to generate
1629 * @param op1 the first operand
1630 * @param op2 the second operand
1631 * @param function_type the function type for the GNU builtin routine
1632 * @param db debug info
1634 static ir_node *gen_binary_builtin_mem(ir_builtin_kind kind, expression_t *op1, expression_t *op2,
1635 type_t *function_type, dbg_info *db)
1638 in[0] = expression_to_firm(op1);
1639 in[1] = expression_to_firm(op2);
1641 ir_type *tp = get_ir_type(function_type);
1642 ir_node *mem = get_store();
1643 ir_node *irn = new_d_Builtin(db, mem, 2, in, kind, tp);
1644 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1649 * Transform calls to builtin functions.
1651 static ir_node *process_builtin_call(const call_expression_t *call)
1653 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1655 assert(call->function->kind == EXPR_REFERENCE);
1656 reference_expression_t *builtin = &call->function->reference;
1658 type_t *type = skip_typeref(builtin->base.type);
1659 assert(is_type_pointer(type));
1661 type_t *function_type = skip_typeref(type->pointer.points_to);
1663 switch (builtin->entity->function.btk) {
1664 case bk_gnu_builtin_alloca: {
1665 if (call->arguments == NULL || call->arguments->next != NULL) {
1666 panic("invalid number of parameters on __builtin_alloca");
1668 expression_t *argument = call->arguments->expression;
1669 ir_node *size = expression_to_firm(argument);
1671 ir_node *store = get_store();
1672 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1674 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1676 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1681 case bk_gnu_builtin_huge_val:
1682 case bk_gnu_builtin_inf:
1683 case bk_gnu_builtin_inff:
1684 case bk_gnu_builtin_infl: {
1685 type_t *type = function_type->function.return_type;
1686 ir_mode *mode = get_ir_mode_arithmetic(type);
1687 tarval *tv = get_mode_infinite(mode);
1688 ir_node *res = new_d_Const(dbgi, tv);
1691 case bk_gnu_builtin_nan:
1692 case bk_gnu_builtin_nanf:
1693 case bk_gnu_builtin_nanl: {
1694 /* Ignore string for now... */
1695 assert(is_type_function(function_type));
1696 type_t *type = function_type->function.return_type;
1697 ir_mode *mode = get_ir_mode_arithmetic(type);
1698 tarval *tv = get_mode_NAN(mode);
1699 ir_node *res = new_d_Const(dbgi, tv);
1702 case bk_gnu_builtin_expect: {
1703 expression_t *argument = call->arguments->expression;
1704 return _expression_to_firm(argument);
1706 case bk_gnu_builtin_va_end:
1707 /* evaluate the argument of va_end for its side effects */
1708 _expression_to_firm(call->arguments->expression);
1710 case bk_gnu_builtin_frame_address: {
1711 expression_t *const expression = call->arguments->expression;
1712 bool val = fold_constant_to_bool(expression);
1715 return get_irg_frame(current_ir_graph);
1717 /* get the argument */
1720 in[0] = expression_to_firm(expression);
1721 in[1] = get_irg_frame(current_ir_graph);
1722 ir_type *tp = get_ir_type(function_type);
1723 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_frame_address, tp);
1724 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1727 case bk_gnu_builtin_return_address: {
1729 expression_t *const expression = call->arguments->expression;
1732 in[0] = expression_to_firm(expression);
1733 in[1] = get_irg_frame(current_ir_graph);
1734 ir_type *tp = get_ir_type(function_type);
1735 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_return_address, tp);
1736 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1738 case bk_gnu_builtin_ffs:
1739 return gen_unary_builtin(ir_bk_ffs, call->arguments->expression, function_type, dbgi);
1740 case bk_gnu_builtin_clz:
1741 return gen_unary_builtin(ir_bk_clz, call->arguments->expression, function_type, dbgi);
1742 case bk_gnu_builtin_ctz:
1743 return gen_unary_builtin(ir_bk_ctz, call->arguments->expression, function_type, dbgi);
1744 case bk_gnu_builtin_popcount:
1745 case bk_ms__popcount:
1746 return gen_unary_builtin(ir_bk_popcount, call->arguments->expression, function_type, dbgi);
1747 case bk_gnu_builtin_parity:
1748 return gen_unary_builtin(ir_bk_parity, call->arguments->expression, function_type, dbgi);
1749 case bk_gnu_builtin_prefetch: {
1750 call_argument_t *const args = call->arguments;
1751 expression_t *const addr = args->expression;
1754 in[0] = _expression_to_firm(addr);
1755 if (args->next != NULL) {
1756 expression_t *const rw = args->next->expression;
1758 in[1] = _expression_to_firm(rw);
1760 if (args->next->next != NULL) {
1761 expression_t *const locality = args->next->next->expression;
1763 in[2] = expression_to_firm(locality);
1765 in[2] = new_Const_long(mode_int, 3);
1768 in[1] = new_Const_long(mode_int, 0);
1769 in[2] = new_Const_long(mode_int, 3);
1771 ir_type *tp = get_ir_type(function_type);
1772 ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_prefetch, tp);
1773 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1776 case bk_gnu_builtin_trap:
1779 ir_type *tp = get_ir_type(function_type);
1780 ir_node *irn = new_d_Builtin(dbgi, get_store(), 0, NULL, ir_bk_trap, tp);
1781 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1784 case bk_ms__debugbreak: {
1785 ir_type *tp = get_ir_type(function_type);
1786 ir_node *irn = new_d_Builtin(dbgi, get_store(), 0, NULL, ir_bk_debugbreak, tp);
1787 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1790 case bk_ms_ReturnAddress: {
1793 in[0] = new_Const_long(mode_int, 0);
1794 in[1] = get_irg_frame(current_ir_graph);
1795 ir_type *tp = get_ir_type(function_type);
1796 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_return_address, tp);
1797 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1800 case bk_ms_rotl64: {
1801 ir_node *val = expression_to_firm(call->arguments->expression);
1802 ir_node *shf = expression_to_firm(call->arguments->next->expression);
1803 ir_mode *mode = get_irn_mode(val);
1804 return new_d_Rotl(dbgi, val, create_conv(dbgi, shf, mode_uint), mode);
1807 case bk_ms_rotr64: {
1808 ir_node *val = expression_to_firm(call->arguments->expression);
1809 ir_node *shf = expression_to_firm(call->arguments->next->expression);
1810 ir_mode *mode = get_irn_mode(val);
1811 ir_node *c = new_Const_long(mode_uint, get_mode_size_bits(mode));
1812 ir_node *sub = new_d_Sub(dbgi, c, create_conv(dbgi, shf, mode_uint), mode_uint);
1813 return new_d_Rotl(dbgi, val, sub, mode);
1815 case bk_ms_byteswap_ushort:
1816 case bk_ms_byteswap_ulong:
1817 case bk_ms_byteswap_uint64:
1818 return gen_unary_builtin(ir_bk_bswap, call->arguments->expression, function_type, dbgi);
1821 case bk_ms__indword:
1822 return gen_unary_builtin_pinned(ir_bk_inport, call->arguments->expression, function_type, dbgi);
1823 case bk_ms__outbyte:
1824 case bk_ms__outword:
1825 case bk_ms__outdword:
1826 return gen_binary_builtin_mem(ir_bk_outport, call->arguments->expression,
1827 call->arguments->next->expression, function_type, dbgi);
1829 panic("unsupported builtin found");
1834 * Transform a call expression.
1835 * Handles some special cases, like alloca() calls, which must be resolved
1836 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1837 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1840 static ir_node *call_expression_to_firm(const call_expression_t *const call)
1842 dbg_info *const dbgi = get_dbg_info(&call->base.source_position);
1843 assert(get_cur_block() != NULL);
1845 expression_t *function = call->function;
1846 if (function->kind == EXPR_REFERENCE) {
1847 const reference_expression_t *ref = &function->reference;
1848 entity_t *entity = ref->entity;
1850 if (entity->kind == ENTITY_FUNCTION) {
1851 if (entity->function.btk != bk_none) {
1852 return process_builtin_call(call);
1855 ir_entity *irentity = entity->function.irentity;
1856 if (irentity == NULL)
1857 irentity = get_function_entity(entity, NULL);
1859 if (irentity == rts_entities[rts_alloca]) {
1860 /* handle alloca() call */
1861 expression_t *argument = call->arguments->expression;
1862 ir_node *size = expression_to_firm(argument);
1863 ir_mode *mode = get_ir_mode_arithmetic(type_size_t);
1865 size = create_conv(dbgi, size, mode);
1867 ir_node *store = get_store();
1868 ir_node *alloca = new_d_Alloc(dbgi, store, size,
1869 firm_unknown_type, stack_alloc);
1870 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1872 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1878 ir_node *callee = expression_to_firm(function);
1880 type_t *type = skip_typeref(function->base.type);
1881 assert(is_type_pointer(type));
1882 pointer_type_t *pointer_type = &type->pointer;
1883 type_t *points_to = skip_typeref(pointer_type->points_to);
1884 assert(is_type_function(points_to));
1885 function_type_t *function_type = &points_to->function;
1887 int n_parameters = 0;
1888 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1889 ir_type *new_method_type = NULL;
1890 if (function_type->variadic || function_type->unspecified_parameters) {
1891 const call_argument_t *argument = call->arguments;
1892 for ( ; argument != NULL; argument = argument->next) {
1896 /* we need to construct a new method type matching the call
1898 int n_res = get_method_n_ress(ir_method_type);
1899 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1900 n_parameters, n_res, dbgi);
1901 set_method_calling_convention(new_method_type,
1902 get_method_calling_convention(ir_method_type));
1903 set_method_additional_properties(new_method_type,
1904 get_method_additional_properties(ir_method_type));
1905 set_method_variadicity(new_method_type,
1906 get_method_variadicity(ir_method_type));
1908 for (int i = 0; i < n_res; ++i) {
1909 set_method_res_type(new_method_type, i,
1910 get_method_res_type(ir_method_type, i));
1912 argument = call->arguments;
1913 for (int i = 0; i < n_parameters; ++i, argument = argument->next) {
1914 expression_t *expression = argument->expression;
1915 ir_type *irtype = get_ir_type(expression->base.type);
1916 set_method_param_type(new_method_type, i, irtype);
1918 ir_method_type = new_method_type;
1920 n_parameters = get_method_n_params(ir_method_type);
1923 ir_node *in[n_parameters];
1925 const call_argument_t *argument = call->arguments;
1926 for (int n = 0; n < n_parameters; ++n) {
1927 expression_t *expression = argument->expression;
1928 ir_node *arg_node = expression_to_firm(expression);
1930 type_t *type = skip_typeref(expression->base.type);
1931 if (!is_type_compound(type)) {
1932 ir_mode *mode = get_ir_mode_storage(expression->base.type);
1933 arg_node = create_conv(dbgi, arg_node, mode);
1934 arg_node = do_strict_conv(dbgi, arg_node);
1939 argument = argument->next;
1942 ir_node *store = get_store();
1943 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1945 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M);
1948 type_t *return_type = skip_typeref(function_type->return_type);
1949 ir_node *result = NULL;
1951 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1952 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1954 if (is_type_scalar(return_type)) {
1955 ir_mode *mode = get_ir_mode_storage(return_type);
1956 result = new_d_Proj(dbgi, resproj, mode, 0);
1957 ir_mode *mode_arith = get_ir_mode_arithmetic(return_type);
1958 result = create_conv(NULL, result, mode_arith);
1960 ir_mode *mode = mode_P_data;
1961 result = new_d_Proj(dbgi, resproj, mode, 0);
1965 if (function->kind == EXPR_REFERENCE &&
1966 function->reference.entity->declaration.modifiers & DM_NORETURN) {
1967 /* A dead end: Keep the Call and the Block. Also place all further
1968 * nodes into a new and unreachable block. */
1970 keep_alive(get_cur_block());
1977 static void statement_to_firm(statement_t *statement);
1978 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1980 static ir_node *expression_to_addr(const expression_t *expression);
1981 static ir_node *create_condition_evaluation(const expression_t *expression,
1982 ir_node *true_block,
1983 ir_node *false_block);
1985 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1988 if (!is_type_compound(type)) {
1989 ir_mode *mode = get_ir_mode_storage(type);
1990 value = create_conv(dbgi, value, mode);
1991 value = do_strict_conv(dbgi, value);
1994 ir_node *memory = get_store();
1996 if (is_type_scalar(type)) {
1997 ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
1998 ? cons_volatile : cons_none;
1999 ir_node *store = new_d_Store(dbgi, memory, addr, value, flags);
2000 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
2001 set_store(store_mem);
2003 ir_type *irtype = get_ir_type(type);
2004 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
2005 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
2006 set_store(copyb_mem);
2010 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
2012 tarval *all_one = get_mode_all_one(mode);
2013 int mode_size = get_mode_size_bits(mode);
2015 assert(offset >= 0);
2017 assert(offset + size <= mode_size);
2018 if (size == mode_size) {
2022 long shiftr = get_mode_size_bits(mode) - size;
2023 long shiftl = offset;
2024 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
2025 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
2026 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
2027 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
2032 static ir_node *bitfield_store_to_firm(dbg_info *dbgi,
2033 ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile)
2035 ir_type *entity_type = get_entity_type(entity);
2036 ir_type *base_type = get_primitive_base_type(entity_type);
2037 assert(base_type != NULL);
2038 ir_mode *mode = get_type_mode(base_type);
2040 value = create_conv(dbgi, value, mode);
2042 /* kill upper bits of value and shift to right position */
2043 int bitoffset = get_entity_offset_bits_remainder(entity);
2044 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
2046 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
2047 ir_node *mask_node = new_d_Const(dbgi, mask);
2048 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
2049 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
2050 ir_node *shiftcount = new_d_Const(dbgi, shiftl);
2051 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
2053 /* load current value */
2054 ir_node *mem = get_store();
2055 ir_node *load = new_d_Load(dbgi, mem, addr, mode,
2056 set_volatile ? cons_volatile : cons_none);
2057 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
2058 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
2059 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
2060 tarval *inv_mask = tarval_not(shift_mask);
2061 ir_node *inv_mask_node = new_d_Const(dbgi, inv_mask);
2062 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
2064 /* construct new value and store */
2065 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
2066 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val,
2067 set_volatile ? cons_volatile : cons_none);
2068 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
2069 set_store(store_mem);
2071 return value_masked;
2074 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
2077 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2078 type_t *type = expression->base.type;
2079 ir_mode *mode = get_ir_mode_storage(type);
2080 ir_node *mem = get_store();
2081 ir_node *load = new_d_Load(dbgi, mem, addr, mode, cons_none);
2082 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
2083 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
2085 load_res = create_conv(dbgi, load_res, mode_int);
2087 set_store(load_mem);
2089 /* kill upper bits */
2090 assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER);
2091 ir_entity *entity = expression->compound_entry->compound_member.entity;
2092 int bitoffset = get_entity_offset_bits_remainder(entity);
2093 ir_type *entity_type = get_entity_type(entity);
2094 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
2095 long shift_bitsl = machine_size - bitoffset - bitsize;
2096 assert(shift_bitsl >= 0);
2097 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
2098 ir_node *countl = new_d_Const(dbgi, tvl);
2099 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
2101 long shift_bitsr = bitoffset + shift_bitsl;
2102 assert(shift_bitsr <= (long) machine_size);
2103 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
2104 ir_node *countr = new_d_Const(dbgi, tvr);
2106 if (mode_is_signed(mode)) {
2107 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
2109 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
2112 return create_conv(dbgi, shiftr, mode);
2115 /* make sure the selected compound type is constructed */
2116 static void construct_select_compound(const select_expression_t *expression)
2118 type_t *type = skip_typeref(expression->compound->base.type);
2119 if (is_type_pointer(type)) {
2120 type = type->pointer.points_to;
2122 (void) get_ir_type(type);
2125 static ir_node *set_value_for_expression_addr(const expression_t *expression,
2126 ir_node *value, ir_node *addr)
2128 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2129 type_t *type = skip_typeref(expression->base.type);
2131 if (!is_type_compound(type)) {
2132 ir_mode *mode = get_ir_mode_storage(type);
2133 value = create_conv(dbgi, value, mode);
2134 value = do_strict_conv(dbgi, value);
2137 if (expression->kind == EXPR_REFERENCE) {
2138 const reference_expression_t *ref = &expression->reference;
2140 entity_t *entity = ref->entity;
2141 assert(is_declaration(entity));
2142 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2143 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2144 set_value(entity->variable.v.value_number, value);
2146 } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2147 set_value(entity->parameter.v.value_number, value);
2153 addr = expression_to_addr(expression);
2154 assert(addr != NULL);
2156 if (expression->kind == EXPR_SELECT) {
2157 const select_expression_t *select = &expression->select;
2159 construct_select_compound(select);
2161 entity_t *entity = select->compound_entry;
2162 assert(entity->kind == ENTITY_COMPOUND_MEMBER);
2163 if (entity->declaration.type->kind == TYPE_BITFIELD) {
2164 ir_entity *irentity = entity->compound_member.entity;
2166 = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
2167 value = bitfield_store_to_firm(dbgi, irentity, addr, value,
2173 assign_value(dbgi, addr, type, value);
2177 static void set_value_for_expression(const expression_t *expression,
2180 set_value_for_expression_addr(expression, value, NULL);
2183 static ir_node *get_value_from_lvalue(const expression_t *expression,
2186 if (expression->kind == EXPR_REFERENCE) {
2187 const reference_expression_t *ref = &expression->reference;
2189 entity_t *entity = ref->entity;
2190 assert(entity->kind == ENTITY_VARIABLE
2191 || entity->kind == ENTITY_PARAMETER);
2192 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2194 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2195 value_number = entity->variable.v.value_number;
2196 assert(addr == NULL);
2197 type_t *type = skip_typeref(expression->base.type);
2198 ir_mode *mode = get_ir_mode_storage(type);
2199 ir_node *res = get_value(value_number, mode);
2200 return create_conv(NULL, res, get_ir_mode_arithmetic(type));
2201 } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2202 value_number = entity->parameter.v.value_number;
2203 assert(addr == NULL);
2204 type_t *type = skip_typeref(expression->base.type);
2205 ir_mode *mode = get_ir_mode_storage(type);
2206 ir_node *res = get_value(value_number, mode);
2207 return create_conv(NULL, res, get_ir_mode_arithmetic(type));
2211 assert(addr != NULL);
2212 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2215 if (expression->kind == EXPR_SELECT &&
2216 expression->select.compound_entry->declaration.type->kind == TYPE_BITFIELD){
2217 construct_select_compound(&expression->select);
2218 value = bitfield_extract_to_firm(&expression->select, addr);
2220 value = deref_address(dbgi, expression->base.type, addr);
2227 static ir_node *create_incdec(const unary_expression_t *expression)
2229 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2230 const expression_t *value_expr = expression->value;
2231 ir_node *addr = expression_to_addr(value_expr);
2232 ir_node *value = get_value_from_lvalue(value_expr, addr);
2234 type_t *type = skip_typeref(expression->base.type);
2235 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2238 if (is_type_pointer(type)) {
2239 pointer_type_t *pointer_type = &type->pointer;
2240 offset = get_type_size_node(pointer_type->points_to);
2242 assert(is_type_arithmetic(type));
2243 offset = new_Const(get_mode_one(mode));
2247 ir_node *store_value;
2248 switch(expression->base.kind) {
2249 case EXPR_UNARY_POSTFIX_INCREMENT:
2251 store_value = new_d_Add(dbgi, value, offset, mode);
2253 case EXPR_UNARY_POSTFIX_DECREMENT:
2255 store_value = new_d_Sub(dbgi, value, offset, mode);
2257 case EXPR_UNARY_PREFIX_INCREMENT:
2258 result = new_d_Add(dbgi, value, offset, mode);
2259 store_value = result;
2261 case EXPR_UNARY_PREFIX_DECREMENT:
2262 result = new_d_Sub(dbgi, value, offset, mode);
2263 store_value = result;
2266 panic("no incdec expr in create_incdec");
2269 set_value_for_expression_addr(value_expr, store_value, addr);
2274 static bool is_local_variable(expression_t *expression)
2276 if (expression->kind != EXPR_REFERENCE)
2278 reference_expression_t *ref_expr = &expression->reference;
2279 entity_t *entity = ref_expr->entity;
2280 if (entity->kind != ENTITY_VARIABLE)
2282 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2283 return entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE;
2286 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
2289 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
2290 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
2291 case EXPR_BINARY_NOTEQUAL:
2292 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
2293 case EXPR_BINARY_ISLESS:
2294 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
2295 case EXPR_BINARY_ISLESSEQUAL:
2296 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
2297 case EXPR_BINARY_ISGREATER:
2298 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
2299 case EXPR_BINARY_ISGREATEREQUAL:
2300 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
2301 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
2306 panic("trying to get pn_Cmp from non-comparison binexpr type");
2310 * Handle the assume optimizer hint: check if a Confirm
2311 * node can be created.
2313 * @param dbi debug info
2314 * @param expr the IL assume expression
2316 * we support here only some simple cases:
2321 static ir_node *handle_assume_compare(dbg_info *dbi,
2322 const binary_expression_t *expression)
2324 expression_t *op1 = expression->left;
2325 expression_t *op2 = expression->right;
2326 entity_t *var2, *var = NULL;
2327 ir_node *res = NULL;
2330 cmp_val = get_pnc(expression->base.kind, op1->base.type);
2332 if (is_local_variable(op1) && is_local_variable(op2)) {
2333 var = op1->reference.entity;
2334 var2 = op2->reference.entity;
2336 type_t *const type = skip_typeref(var->declaration.type);
2337 ir_mode *const mode = get_ir_mode_storage(type);
2339 ir_node *const irn1 = get_value(var->variable.v.value_number, mode);
2340 ir_node *const irn2 = get_value(var2->variable.v.value_number, mode);
2342 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
2343 set_value(var2->variable.v.value_number, res);
2345 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
2346 set_value(var->variable.v.value_number, res);
2352 if (is_local_variable(op1) && is_constant_expression(op2)) {
2353 var = op1->reference.entity;
2355 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2356 cmp_val = get_inversed_pnc(cmp_val);
2357 var = op2->reference.entity;
2362 type_t *const type = skip_typeref(var->declaration.type);
2363 ir_mode *const mode = get_ir_mode_storage(type);
2365 res = get_value(var->variable.v.value_number, mode);
2366 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2367 set_value(var->variable.v.value_number, res);
2373 * Handle the assume optimizer hint.
2375 * @param dbi debug info
2376 * @param expr the IL assume expression
2378 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression)
2380 switch(expression->kind) {
2381 case EXPR_BINARY_EQUAL:
2382 case EXPR_BINARY_NOTEQUAL:
2383 case EXPR_BINARY_LESS:
2384 case EXPR_BINARY_LESSEQUAL:
2385 case EXPR_BINARY_GREATER:
2386 case EXPR_BINARY_GREATEREQUAL:
2387 return handle_assume_compare(dbi, &expression->binary);
2393 static ir_node *create_cast(dbg_info *dbgi, ir_node *value_node,
2394 type_t *from_type, type_t *type)
2396 type = skip_typeref(type);
2397 if (!is_type_scalar(type)) {
2398 /* make sure firm type is constructed */
2399 (void) get_ir_type(type);
2403 from_type = skip_typeref(from_type);
2404 ir_mode *mode = get_ir_mode_storage(type);
2405 /* check for conversion from / to __based types */
2406 if (is_type_pointer(type) && is_type_pointer(from_type)) {
2407 const variable_t *from_var = from_type->pointer.base_variable;
2408 const variable_t *to_var = type->pointer.base_variable;
2409 if (from_var != to_var) {
2410 if (from_var != NULL) {
2411 ir_node *const addr = get_global_var_address(dbgi, from_var);
2412 ir_node *const base = deref_address(dbgi, from_var->base.type, addr);
2413 value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(from_type));
2415 if (to_var != NULL) {
2416 ir_node *const addr = get_global_var_address(dbgi, to_var);
2417 ir_node *const base = deref_address(dbgi, to_var->base.type, addr);
2418 value_node = new_d_Sub(dbgi, value_node, base, mode);
2423 if (is_type_atomic(type, ATOMIC_TYPE_BOOL)) {
2424 /* bool adjustments (we save a mode_Bu, but have to temporarily
2425 * convert to mode_b so we only get a 0/1 value */
2426 value_node = create_conv(dbgi, value_node, mode_b);
2429 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
2430 ir_node *node = create_conv(dbgi, value_node, mode);
2431 node = do_strict_conv(dbgi, node);
2432 node = create_conv(dbgi, node, mode_arith);
2437 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2439 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2440 type_t *type = skip_typeref(expression->base.type);
2442 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2443 return expression_to_addr(expression->value);
2445 const expression_t *value = expression->value;
2447 switch(expression->base.kind) {
2448 case EXPR_UNARY_NEGATE: {
2449 ir_node *value_node = expression_to_firm(value);
2450 ir_mode *mode = get_ir_mode_arithmetic(type);
2451 return new_d_Minus(dbgi, value_node, mode);
2453 case EXPR_UNARY_PLUS:
2454 return expression_to_firm(value);
2455 case EXPR_UNARY_BITWISE_NEGATE: {
2456 ir_node *value_node = expression_to_firm(value);
2457 ir_mode *mode = get_ir_mode_arithmetic(type);
2458 return new_d_Not(dbgi, value_node, mode);
2460 case EXPR_UNARY_NOT: {
2461 ir_node *value_node = _expression_to_firm(value);
2462 value_node = create_conv(dbgi, value_node, mode_b);
2463 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2466 case EXPR_UNARY_DEREFERENCE: {
2467 ir_node *value_node = expression_to_firm(value);
2468 type_t *value_type = skip_typeref(value->base.type);
2469 assert(is_type_pointer(value_type));
2471 /* check for __based */
2472 const variable_t *const base_var = value_type->pointer.base_variable;
2473 if (base_var != NULL) {
2474 ir_node *const addr = get_global_var_address(dbgi, base_var);
2475 ir_node *const base = deref_address(dbgi, base_var->base.type, addr);
2476 value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(value_type));
2478 type_t *points_to = value_type->pointer.points_to;
2479 return deref_address(dbgi, points_to, value_node);
2481 case EXPR_UNARY_POSTFIX_INCREMENT:
2482 case EXPR_UNARY_POSTFIX_DECREMENT:
2483 case EXPR_UNARY_PREFIX_INCREMENT:
2484 case EXPR_UNARY_PREFIX_DECREMENT:
2485 return create_incdec(expression);
2486 case EXPR_UNARY_CAST_IMPLICIT:
2487 case EXPR_UNARY_CAST: {
2488 ir_node *value_node = expression_to_firm(value);
2489 type_t *from_type = value->base.type;
2490 return create_cast(dbgi, value_node, from_type, type);
2492 case EXPR_UNARY_ASSUME:
2493 if (firm_opt.confirm)
2494 return handle_assume(dbgi, value);
2501 panic("invalid UNEXPR type found");
2505 * produces a 0/1 depending of the value of a mode_b node
2507 static ir_node *produce_condition_result(const expression_t *expression,
2508 ir_mode *mode, dbg_info *dbgi)
2510 ir_node *cur_block = get_cur_block();
2512 ir_node *one_block = new_immBlock();
2513 set_cur_block(one_block);
2514 ir_node *one = new_Const(get_mode_one(mode));
2515 ir_node *jmp_one = new_d_Jmp(dbgi);
2517 ir_node *zero_block = new_immBlock();
2518 set_cur_block(zero_block);
2519 ir_node *zero = new_Const(get_mode_null(mode));
2520 ir_node *jmp_zero = new_d_Jmp(dbgi);
2522 set_cur_block(cur_block);
2523 create_condition_evaluation(expression, one_block, zero_block);
2524 mature_immBlock(one_block);
2525 mature_immBlock(zero_block);
2527 ir_node *in_cf[2] = { jmp_one, jmp_zero };
2528 new_Block(2, in_cf);
2530 ir_node *in[2] = { one, zero };
2531 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2536 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2537 ir_node *value, type_t *type)
2539 ir_mode *const mode = get_ir_mode_arithmetic(type_ptrdiff_t);
2540 assert(is_type_pointer(type));
2541 pointer_type_t *const pointer_type = &type->pointer;
2542 type_t *const points_to = skip_typeref(pointer_type->points_to);
2543 ir_node * elem_size = get_type_size_node(points_to);
2544 elem_size = create_conv(dbgi, elem_size, mode);
2545 value = create_conv(dbgi, value, mode);
2546 ir_node *const mul = new_d_Mul(dbgi, value, elem_size, mode);
2550 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2551 ir_node *left, ir_node *right)
2554 type_t *type_left = skip_typeref(expression->left->base.type);
2555 type_t *type_right = skip_typeref(expression->right->base.type);
2557 expression_kind_t kind = expression->base.kind;
2560 case EXPR_BINARY_SHIFTLEFT:
2561 case EXPR_BINARY_SHIFTRIGHT:
2562 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2563 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2564 mode = get_irn_mode(left);
2565 right = create_conv(dbgi, right, mode_uint);
2568 case EXPR_BINARY_SUB:
2569 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2570 const pointer_type_t *const ptr_type = &type_left->pointer;
2572 mode = get_ir_mode_arithmetic(expression->base.type);
2573 ir_node *const elem_size = get_type_size_node(ptr_type->points_to);
2574 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2575 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2576 ir_node *const no_mem = new_NoMem();
2577 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2578 mode, op_pin_state_floats);
2579 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2582 case EXPR_BINARY_SUB_ASSIGN:
2583 if (is_type_pointer(type_left)) {
2584 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2585 mode = get_ir_mode_arithmetic(type_left);
2590 case EXPR_BINARY_ADD:
2591 case EXPR_BINARY_ADD_ASSIGN:
2592 if (is_type_pointer(type_left)) {
2593 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2594 mode = get_ir_mode_arithmetic(type_left);
2596 } else if (is_type_pointer(type_right)) {
2597 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2598 mode = get_ir_mode_arithmetic(type_right);
2605 mode = get_ir_mode_arithmetic(type_right);
2606 left = create_conv(dbgi, left, mode);
2611 case EXPR_BINARY_ADD_ASSIGN:
2612 case EXPR_BINARY_ADD:
2613 return new_d_Add(dbgi, left, right, mode);
2614 case EXPR_BINARY_SUB_ASSIGN:
2615 case EXPR_BINARY_SUB:
2616 return new_d_Sub(dbgi, left, right, mode);
2617 case EXPR_BINARY_MUL_ASSIGN:
2618 case EXPR_BINARY_MUL:
2619 return new_d_Mul(dbgi, left, right, mode);
2620 case EXPR_BINARY_BITWISE_AND:
2621 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2622 return new_d_And(dbgi, left, right, mode);
2623 case EXPR_BINARY_BITWISE_OR:
2624 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2625 return new_d_Or(dbgi, left, right, mode);
2626 case EXPR_BINARY_BITWISE_XOR:
2627 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2628 return new_d_Eor(dbgi, left, right, mode);
2629 case EXPR_BINARY_SHIFTLEFT:
2630 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2631 return new_d_Shl(dbgi, left, right, mode);
2632 case EXPR_BINARY_SHIFTRIGHT:
2633 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2634 if (mode_is_signed(mode)) {
2635 return new_d_Shrs(dbgi, left, right, mode);
2637 return new_d_Shr(dbgi, left, right, mode);
2639 case EXPR_BINARY_DIV:
2640 case EXPR_BINARY_DIV_ASSIGN: {
2641 ir_node *pin = new_Pin(new_NoMem());
2644 if (mode_is_float(mode)) {
2645 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2646 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2648 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2649 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2653 case EXPR_BINARY_MOD:
2654 case EXPR_BINARY_MOD_ASSIGN: {
2655 ir_node *pin = new_Pin(new_NoMem());
2656 assert(!mode_is_float(mode));
2657 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2658 op_pin_state_floats);
2659 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2663 panic("unexpected expression kind");
2667 static ir_node *create_lazy_op(const binary_expression_t *expression)
2669 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2670 type_t *type = skip_typeref(expression->base.type);
2671 ir_mode *mode = get_ir_mode_arithmetic(type);
2673 if (is_constant_expression(expression->left)) {
2674 bool val = fold_constant_to_bool(expression->left);
2675 expression_kind_t ekind = expression->base.kind;
2676 assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
2677 if (ekind == EXPR_BINARY_LOGICAL_AND) {
2679 return new_Const(get_mode_null(mode));
2683 return new_Const(get_mode_one(mode));
2687 if (is_constant_expression(expression->right)) {
2688 bool valr = fold_constant_to_bool(expression->right);
2690 new_Const(get_mode_one(mode)) :
2691 new_Const(get_mode_null(mode));
2694 return produce_condition_result(expression->right, mode, dbgi);
2697 return produce_condition_result((const expression_t*) expression, mode,
2701 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2702 ir_node *right, ir_mode *mode);
2704 static ir_node *create_assign_binop(const binary_expression_t *expression)
2706 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2707 const expression_t *left_expr = expression->left;
2708 type_t *type = skip_typeref(left_expr->base.type);
2709 ir_node *right = expression_to_firm(expression->right);
2710 ir_node *left_addr = expression_to_addr(left_expr);
2711 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2712 ir_node *result = create_op(dbgi, expression, left, right);
2714 result = create_cast(dbgi, result, expression->right->base.type, type);
2715 result = do_strict_conv(dbgi, result);
2717 result = set_value_for_expression_addr(left_expr, result, left_addr);
2719 if (!is_type_compound(type)) {
2720 ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
2721 result = create_conv(dbgi, result, mode_arithmetic);
2726 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2728 expression_kind_t kind = expression->base.kind;
2731 case EXPR_BINARY_EQUAL:
2732 case EXPR_BINARY_NOTEQUAL:
2733 case EXPR_BINARY_LESS:
2734 case EXPR_BINARY_LESSEQUAL:
2735 case EXPR_BINARY_GREATER:
2736 case EXPR_BINARY_GREATEREQUAL:
2737 case EXPR_BINARY_ISGREATER:
2738 case EXPR_BINARY_ISGREATEREQUAL:
2739 case EXPR_BINARY_ISLESS:
2740 case EXPR_BINARY_ISLESSEQUAL:
2741 case EXPR_BINARY_ISLESSGREATER:
2742 case EXPR_BINARY_ISUNORDERED: {
2743 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2744 ir_node *left = expression_to_firm(expression->left);
2745 ir_node *right = expression_to_firm(expression->right);
2746 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2747 long pnc = get_pnc(kind, expression->left->base.type);
2748 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2751 case EXPR_BINARY_ASSIGN: {
2752 ir_node *addr = expression_to_addr(expression->left);
2753 ir_node *right = expression_to_firm(expression->right);
2755 = set_value_for_expression_addr(expression->left, right, addr);
2757 type_t *type = skip_typeref(expression->base.type);
2758 if (!is_type_compound(type)) {
2759 ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
2760 res = create_conv(NULL, res, mode_arithmetic);
2764 case EXPR_BINARY_ADD:
2765 case EXPR_BINARY_SUB:
2766 case EXPR_BINARY_MUL:
2767 case EXPR_BINARY_DIV:
2768 case EXPR_BINARY_MOD:
2769 case EXPR_BINARY_BITWISE_AND:
2770 case EXPR_BINARY_BITWISE_OR:
2771 case EXPR_BINARY_BITWISE_XOR:
2772 case EXPR_BINARY_SHIFTLEFT:
2773 case EXPR_BINARY_SHIFTRIGHT:
2775 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2776 ir_node *left = expression_to_firm(expression->left);
2777 ir_node *right = expression_to_firm(expression->right);
2778 return create_op(dbgi, expression, left, right);
2780 case EXPR_BINARY_LOGICAL_AND:
2781 case EXPR_BINARY_LOGICAL_OR:
2782 return create_lazy_op(expression);
2783 case EXPR_BINARY_COMMA:
2784 /* create side effects of left side */
2785 (void) expression_to_firm(expression->left);
2786 return _expression_to_firm(expression->right);
2788 case EXPR_BINARY_ADD_ASSIGN:
2789 case EXPR_BINARY_SUB_ASSIGN:
2790 case EXPR_BINARY_MUL_ASSIGN:
2791 case EXPR_BINARY_MOD_ASSIGN:
2792 case EXPR_BINARY_DIV_ASSIGN:
2793 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2794 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2795 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2796 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2797 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2798 return create_assign_binop(expression);
2800 panic("TODO binexpr type");
2804 static ir_node *array_access_addr(const array_access_expression_t *expression)
2806 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2807 ir_node *base_addr = expression_to_firm(expression->array_ref);
2808 ir_node *offset = expression_to_firm(expression->index);
2809 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2810 ir_node *real_offset = adjust_for_pointer_arithmetic(dbgi, offset, ref_type);
2811 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2816 static ir_node *array_access_to_firm(
2817 const array_access_expression_t *expression)
2819 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2820 ir_node *addr = array_access_addr(expression);
2821 type_t *type = revert_automatic_type_conversion(
2822 (const expression_t*) expression);
2823 type = skip_typeref(type);
2825 return deref_address(dbgi, type, addr);
2828 static long get_offsetof_offset(const offsetof_expression_t *expression)
2830 type_t *orig_type = expression->type;
2833 designator_t *designator = expression->designator;
2834 for ( ; designator != NULL; designator = designator->next) {
2835 type_t *type = skip_typeref(orig_type);
2836 /* be sure the type is constructed */
2837 (void) get_ir_type(type);
2839 if (designator->symbol != NULL) {
2840 assert(is_type_compound(type));
2841 symbol_t *symbol = designator->symbol;
2843 compound_t *compound = type->compound.compound;
2844 entity_t *iter = compound->members.entities;
2845 for ( ; iter != NULL; iter = iter->base.next) {
2846 if (iter->base.symbol == symbol) {
2850 assert(iter != NULL);
2852 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
2853 assert(iter->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2854 offset += get_entity_offset(iter->compound_member.entity);
2856 orig_type = iter->declaration.type;
2858 expression_t *array_index = designator->array_index;
2859 assert(designator->array_index != NULL);
2860 assert(is_type_array(type));
2862 long index = fold_constant_to_int(array_index);
2863 ir_type *arr_type = get_ir_type(type);
2864 ir_type *elem_type = get_array_element_type(arr_type);
2865 long elem_size = get_type_size_bytes(elem_type);
2867 offset += index * elem_size;
2869 orig_type = type->array.element_type;
2876 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2878 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2879 long offset = get_offsetof_offset(expression);
2880 tarval *tv = new_tarval_from_long(offset, mode);
2881 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2883 return new_d_Const(dbgi, tv);
2886 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2887 ir_entity *entity, type_t *type);
2889 static ir_node *compound_literal_to_firm(
2890 const compound_literal_expression_t *expression)
2892 type_t *type = expression->type;
2894 /* create an entity on the stack */
2895 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2897 ident *const id = id_unique("CompLit.%u");
2898 ir_type *const irtype = get_ir_type(type);
2899 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2900 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2901 set_entity_ld_ident(entity, id);
2903 set_entity_variability(entity, variability_uninitialized);
2905 /* create initialisation code */
2906 initializer_t *initializer = expression->initializer;
2907 create_local_initializer(initializer, dbgi, entity, type);
2909 /* create a sel for the compound literal address */
2910 ir_node *frame = get_irg_frame(current_ir_graph);
2911 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2916 * Transform a sizeof expression into Firm code.
2918 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2920 type_t *const type = skip_typeref(expression->type);
2921 /* §6.5.3.4:2 if the type is a VLA, evaluate the expression. */
2922 if (is_type_array(type) && type->array.is_vla
2923 && expression->tp_expression != NULL) {
2924 expression_to_firm(expression->tp_expression);
2927 return get_type_size_node(type);
2930 static entity_t *get_expression_entity(const expression_t *expression)
2932 if (expression->kind != EXPR_REFERENCE)
2935 return expression->reference.entity;
2938 static unsigned get_cparser_entity_alignment(const entity_t *entity)
2940 switch(entity->kind) {
2941 DECLARATION_KIND_CASES
2942 return entity->declaration.alignment;
2945 return entity->compound.alignment;
2946 case ENTITY_TYPEDEF:
2947 return entity->typedefe.alignment;
2955 * Transform an alignof expression into Firm code.
2957 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2959 unsigned alignment = 0;
2961 const expression_t *tp_expression = expression->tp_expression;
2962 if (tp_expression != NULL) {
2963 entity_t *entity = get_expression_entity(tp_expression);
2964 if (entity != NULL) {
2965 alignment = get_cparser_entity_alignment(entity);
2969 if (alignment == 0) {
2970 type_t *type = expression->type;
2971 alignment = get_type_alignment(type);
2974 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2975 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2976 tarval *tv = new_tarval_from_long(alignment, mode);
2977 return new_d_Const(dbgi, tv);
2980 static void init_ir_types(void);
2982 static tarval *fold_constant_to_tarval(const expression_t *expression)
2984 assert(is_type_valid(skip_typeref(expression->base.type)));
2986 bool constant_folding_old = constant_folding;
2987 constant_folding = true;
2991 assert(is_constant_expression(expression));
2993 ir_graph *old_current_ir_graph = current_ir_graph;
2994 current_ir_graph = get_const_code_irg();
2996 ir_node *cnst = expression_to_firm(expression);
2997 current_ir_graph = old_current_ir_graph;
2999 if (!is_Const(cnst)) {
3000 panic("couldn't fold constant");
3003 constant_folding = constant_folding_old;
3005 tarval *tv = get_Const_tarval(cnst);
3009 long fold_constant_to_int(const expression_t *expression)
3011 if (expression->kind == EXPR_INVALID)
3014 tarval *tv = fold_constant_to_tarval(expression);
3015 if (!tarval_is_long(tv)) {
3016 panic("result of constant folding is not integer");
3019 return get_tarval_long(tv);
3022 bool fold_constant_to_bool(const expression_t *expression)
3024 if (expression->kind == EXPR_INVALID)
3026 tarval *tv = fold_constant_to_tarval(expression);
3027 return !tarval_is_null(tv);
3030 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
3032 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
3034 /* first try to fold a constant condition */
3035 if (is_constant_expression(expression->condition)) {
3036 bool val = fold_constant_to_bool(expression->condition);
3038 expression_t *true_expression = expression->true_expression;
3039 if (true_expression == NULL)
3040 true_expression = expression->condition;
3041 return expression_to_firm(true_expression);
3043 return expression_to_firm(expression->false_expression);
3047 ir_node *cur_block = get_cur_block();
3049 /* create the true block */
3050 ir_node *true_block = new_immBlock();
3051 set_cur_block(true_block);
3053 ir_node *true_val = expression->true_expression != NULL ?
3054 expression_to_firm(expression->true_expression) : NULL;
3055 ir_node *true_jmp = new_Jmp();
3057 /* create the false block */
3058 ir_node *false_block = new_immBlock();
3059 set_cur_block(false_block);
3061 ir_node *false_val = expression_to_firm(expression->false_expression);
3062 ir_node *false_jmp = new_Jmp();
3064 /* create the condition evaluation */
3065 set_cur_block(cur_block);
3066 ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
3067 if (expression->true_expression == NULL) {
3068 if (cond_expr != NULL && get_irn_mode(cond_expr) != mode_b) {
3069 true_val = cond_expr;
3071 /* Condition ended with a short circuit (&&, ||, !) operation or a
3072 * comparison. Generate a "1" as value for the true branch. */
3073 true_val = new_Const(get_mode_one(mode_Is));
3076 mature_immBlock(true_block);
3077 mature_immBlock(false_block);
3079 /* create the common block */
3080 ir_node *in_cf[2] = { true_jmp, false_jmp };
3081 new_Block(2, in_cf);
3083 /* TODO improve static semantics, so either both or no values are NULL */
3084 if (true_val == NULL || false_val == NULL)
3087 ir_node *in[2] = { true_val, false_val };
3088 ir_mode *mode = get_irn_mode(true_val);
3089 assert(get_irn_mode(false_val) == mode);
3090 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
3096 * Returns an IR-node representing the address of a field.
3098 static ir_node *select_addr(const select_expression_t *expression)
3100 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3102 construct_select_compound(expression);
3104 ir_node *compound_addr = expression_to_firm(expression->compound);
3106 entity_t *entry = expression->compound_entry;
3107 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3108 assert(entry->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
3110 if (constant_folding) {
3111 ir_mode *mode = get_irn_mode(compound_addr);
3112 /* FIXME: here, we need an integer mode with the same number of bits as mode */
3113 ir_node *ofs = new_Const_long(mode_uint, entry->compound_member.offset);
3114 return new_d_Add(dbgi, compound_addr, ofs, mode);
3116 ir_entity *irentity = entry->compound_member.entity;
3117 assert(irentity != NULL);
3118 return new_d_simpleSel(dbgi, new_NoMem(), compound_addr, irentity);
3122 static ir_node *select_to_firm(const select_expression_t *expression)
3124 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3125 ir_node *addr = select_addr(expression);
3126 type_t *type = revert_automatic_type_conversion(
3127 (const expression_t*) expression);
3128 type = skip_typeref(type);
3130 entity_t *entry = expression->compound_entry;
3131 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3132 type_t *entry_type = skip_typeref(entry->declaration.type);
3134 if (entry_type->kind == TYPE_BITFIELD) {
3135 return bitfield_extract_to_firm(expression, addr);
3138 return deref_address(dbgi, type, addr);
3141 /* Values returned by __builtin_classify_type. */
3142 typedef enum gcc_type_class
3148 enumeral_type_class,
3151 reference_type_class,
3155 function_type_class,
3166 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
3168 type_t *type = expr->type_expression->base.type;
3170 /* FIXME gcc returns different values depending on whether compiling C or C++
3171 * e.g. int x[10] is pointer_type_class in C, but array_type_class in C++ */
3174 type = skip_typeref(type);
3175 switch (type->kind) {
3177 const atomic_type_t *const atomic_type = &type->atomic;
3178 switch (atomic_type->akind) {
3179 /* should not be reached */
3180 case ATOMIC_TYPE_INVALID:
3184 /* gcc cannot do that */
3185 case ATOMIC_TYPE_VOID:
3186 tc = void_type_class;
3189 case ATOMIC_TYPE_WCHAR_T: /* gcc handles this as integer */
3190 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
3191 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
3192 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
3193 case ATOMIC_TYPE_SHORT:
3194 case ATOMIC_TYPE_USHORT:
3195 case ATOMIC_TYPE_INT:
3196 case ATOMIC_TYPE_UINT:
3197 case ATOMIC_TYPE_LONG:
3198 case ATOMIC_TYPE_ULONG:
3199 case ATOMIC_TYPE_LONGLONG:
3200 case ATOMIC_TYPE_ULONGLONG:
3201 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
3202 tc = integer_type_class;
3205 case ATOMIC_TYPE_FLOAT:
3206 case ATOMIC_TYPE_DOUBLE:
3207 case ATOMIC_TYPE_LONG_DOUBLE:
3208 tc = real_type_class;
3211 panic("Unexpected atomic type in classify_type_to_firm().");
3214 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
3215 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
3216 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
3217 case TYPE_ARRAY: /* gcc handles this as pointer */
3218 case TYPE_FUNCTION: /* gcc handles this as pointer */
3219 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
3220 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
3221 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
3223 /* gcc handles this as integer */
3224 case TYPE_ENUM: tc = integer_type_class; goto make_const;
3226 /* gcc classifies the referenced type */
3227 case TYPE_REFERENCE: type = type->reference.refers_to; continue;
3230 /* typedef/typeof should be skipped already */
3237 panic("unexpected TYPE classify_type_to_firm().");
3241 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3242 tarval *const tv = new_tarval_from_long(tc, mode_int);
3243 return new_d_Const(dbgi, tv);
3246 static ir_node *function_name_to_firm(
3247 const funcname_expression_t *const expr)
3249 switch(expr->kind) {
3250 case FUNCNAME_FUNCTION:
3251 case FUNCNAME_PRETTY_FUNCTION:
3252 case FUNCNAME_FUNCDNAME:
3253 if (current_function_name == NULL) {
3254 const source_position_t *const src_pos = &expr->base.source_position;
3255 const char *name = current_function_entity->base.symbol->string;
3256 const string_t string = { name, strlen(name) + 1 };
3257 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
3259 return current_function_name;
3260 case FUNCNAME_FUNCSIG:
3261 if (current_funcsig == NULL) {
3262 const source_position_t *const src_pos = &expr->base.source_position;
3263 ir_entity *ent = get_irg_entity(current_ir_graph);
3264 const char *const name = get_entity_ld_name(ent);
3265 const string_t string = { name, strlen(name) + 1 };
3266 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
3268 return current_funcsig;
3270 panic("Unsupported function name");
3273 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
3275 statement_t *statement = expr->statement;
3277 assert(statement->kind == STATEMENT_COMPOUND);
3278 return compound_statement_to_firm(&statement->compound);
3281 static ir_node *va_start_expression_to_firm(
3282 const va_start_expression_t *const expr)
3284 type_t *const type = current_function_entity->declaration.type;
3285 ir_type *const method_type = get_ir_type(type);
3286 int const n = get_method_n_params(method_type) - 1;
3287 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
3288 ir_node *const frame = get_irg_frame(current_ir_graph);
3289 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3290 ir_node *const no_mem = new_NoMem();
3291 ir_node *const arg_sel =
3292 new_d_simpleSel(dbgi, no_mem, frame, parm_ent);
3294 type_t *const param_type = expr->parameter->base.type;
3295 ir_node *const cnst = get_type_size_node(param_type);
3296 ir_mode *const mode = get_irn_mode(cnst);
3297 ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
3298 ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
3299 ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align);
3300 ir_node *const c4 = new_d_And(dbgi, c2, c3, mode);
3301 ir_node *const add = new_d_Add(dbgi, arg_sel, c4, mode_P_data);
3302 set_value_for_expression(expr->ap, add);
3307 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
3309 type_t *const type = expr->base.type;
3310 expression_t *const ap_expr = expr->ap;
3311 ir_node *const ap_addr = expression_to_addr(ap_expr);
3312 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
3313 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3314 ir_node *const res = deref_address(dbgi, type, ap);
3316 ir_node *const cnst = get_type_size_node(expr->base.type);
3317 ir_mode *const mode = get_irn_mode(cnst);
3318 ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
3319 ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
3320 ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align);
3321 ir_node *const c4 = new_d_And(dbgi, c2, c3, mode);
3322 ir_node *const add = new_d_Add(dbgi, ap, c4, mode_P_data);
3324 set_value_for_expression_addr(ap_expr, add, ap_addr);
3330 * Generate Firm for a va_copy expression.
3332 static ir_node *va_copy_expression_to_firm(const va_copy_expression_t *const expr)
3334 ir_node *const src = expression_to_firm(expr->src);
3335 set_value_for_expression(expr->dst, src);
3339 static ir_node *dereference_addr(const unary_expression_t *const expression)
3341 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
3342 return expression_to_firm(expression->value);
3346 * Returns a IR-node representing an lvalue of the given expression.
3348 static ir_node *expression_to_addr(const expression_t *expression)
3350 switch(expression->kind) {
3351 case EXPR_ARRAY_ACCESS:
3352 return array_access_addr(&expression->array_access);
3354 return call_expression_to_firm(&expression->call);
3355 case EXPR_COMPOUND_LITERAL:
3356 return compound_literal_to_firm(&expression->compound_literal);
3357 case EXPR_REFERENCE:
3358 return reference_addr(&expression->reference);
3360 return select_addr(&expression->select);
3361 case EXPR_UNARY_DEREFERENCE:
3362 return dereference_addr(&expression->unary);
3366 panic("trying to get address of non-lvalue");
3369 static ir_node *builtin_constant_to_firm(
3370 const builtin_constant_expression_t *expression)
3372 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3375 if (is_constant_expression(expression->value)) {
3380 return new_Const_long(mode, v);
3383 static ir_node *builtin_types_compatible_to_firm(
3384 const builtin_types_compatible_expression_t *expression)
3386 type_t *const left = get_unqualified_type(skip_typeref(expression->left));
3387 type_t *const right = get_unqualified_type(skip_typeref(expression->right));
3388 long const value = types_compatible(left, right) ? 1 : 0;
3389 ir_mode *const mode = get_ir_mode_arithmetic(expression->base.type);
3390 return new_Const_long(mode, value);
3393 static ir_node *get_label_block(label_t *label)
3395 if (label->block != NULL)
3396 return label->block;
3398 /* beware: might be called from create initializer with current_ir_graph
3399 * set to const_code_irg. */
3400 ir_graph *rem = current_ir_graph;
3401 current_ir_graph = current_function;
3403 ir_node *block = new_immBlock();
3405 label->block = block;
3407 ARR_APP1(label_t *, all_labels, label);
3409 current_ir_graph = rem;
3414 * Pointer to a label. This is used for the
3415 * GNU address-of-label extension.
3417 static ir_node *label_address_to_firm(const label_address_expression_t *label)
3419 dbg_info *dbgi = get_dbg_info(&label->base.source_position);
3420 ir_node *block = get_label_block(label->label);
3421 ir_entity *entity = create_Block_entity(block);
3423 symconst_symbol value;
3424 value.entity_p = entity;
3425 return new_d_SymConst(dbgi, mode_P_code, value, symconst_addr_ent);
3429 * creates firm nodes for an expression. The difference between this function
3430 * and expression_to_firm is, that this version might produce mode_b nodes
3431 * instead of mode_Is.
3433 static ir_node *_expression_to_firm(const expression_t *expression)
3436 if (!constant_folding) {
3437 assert(!expression->base.transformed);
3438 ((expression_t*) expression)->base.transformed = true;
3442 switch (expression->kind) {
3443 case EXPR_CHARACTER_CONSTANT:
3444 return character_constant_to_firm(&expression->conste);
3445 case EXPR_WIDE_CHARACTER_CONSTANT:
3446 return wide_character_constant_to_firm(&expression->conste);
3448 return const_to_firm(&expression->conste);
3449 case EXPR_STRING_LITERAL:
3450 return string_literal_to_firm(&expression->string);
3451 case EXPR_WIDE_STRING_LITERAL:
3452 return wide_string_literal_to_firm(&expression->wide_string);
3453 case EXPR_REFERENCE:
3454 return reference_expression_to_firm(&expression->reference);
3455 case EXPR_REFERENCE_ENUM_VALUE:
3456 return reference_expression_enum_value_to_firm(&expression->reference);
3458 return call_expression_to_firm(&expression->call);
3460 return unary_expression_to_firm(&expression->unary);
3462 return binary_expression_to_firm(&expression->binary);
3463 case EXPR_ARRAY_ACCESS:
3464 return array_access_to_firm(&expression->array_access);
3466 return sizeof_to_firm(&expression->typeprop);
3468 return alignof_to_firm(&expression->typeprop);
3469 case EXPR_CONDITIONAL:
3470 return conditional_to_firm(&expression->conditional);
3472 return select_to_firm(&expression->select);
3473 case EXPR_CLASSIFY_TYPE:
3474 return classify_type_to_firm(&expression->classify_type);
3476 return function_name_to_firm(&expression->funcname);
3477 case EXPR_STATEMENT:
3478 return statement_expression_to_firm(&expression->statement);
3480 return va_start_expression_to_firm(&expression->va_starte);
3482 return va_arg_expression_to_firm(&expression->va_arge);
3484 return va_copy_expression_to_firm(&expression->va_copye);
3485 case EXPR_BUILTIN_CONSTANT_P:
3486 return builtin_constant_to_firm(&expression->builtin_constant);
3487 case EXPR_BUILTIN_TYPES_COMPATIBLE_P:
3488 return builtin_types_compatible_to_firm(&expression->builtin_types_compatible);
3490 return offsetof_to_firm(&expression->offsetofe);
3491 case EXPR_COMPOUND_LITERAL:
3492 return compound_literal_to_firm(&expression->compound_literal);
3493 case EXPR_LABEL_ADDRESS:
3494 return label_address_to_firm(&expression->label_address);
3500 panic("invalid expression found");
3504 * Check if a given expression is a GNU __builtin_expect() call.
3506 static bool is_builtin_expect(const expression_t *expression)
3508 if (expression->kind != EXPR_CALL)
3511 expression_t *function = expression->call.function;
3512 if (function->kind != EXPR_REFERENCE)
3514 reference_expression_t *ref = &function->reference;
3515 if (ref->entity->kind != ENTITY_FUNCTION ||
3516 ref->entity->function.btk != bk_gnu_builtin_expect)
3522 static bool produces_mode_b(const expression_t *expression)
3524 switch (expression->kind) {
3525 case EXPR_BINARY_EQUAL:
3526 case EXPR_BINARY_NOTEQUAL:
3527 case EXPR_BINARY_LESS:
3528 case EXPR_BINARY_LESSEQUAL:
3529 case EXPR_BINARY_GREATER:
3530 case EXPR_BINARY_GREATEREQUAL:
3531 case EXPR_BINARY_ISGREATER:
3532 case EXPR_BINARY_ISGREATEREQUAL:
3533 case EXPR_BINARY_ISLESS:
3534 case EXPR_BINARY_ISLESSEQUAL:
3535 case EXPR_BINARY_ISLESSGREATER:
3536 case EXPR_BINARY_ISUNORDERED:
3537 case EXPR_UNARY_NOT:
3541 if (is_builtin_expect(expression)) {
3542 expression_t *argument = expression->call.arguments->expression;
3543 return produces_mode_b(argument);
3546 case EXPR_BINARY_COMMA:
3547 return produces_mode_b(expression->binary.right);
3554 static ir_node *expression_to_firm(const expression_t *expression)
3556 if (!produces_mode_b(expression)) {
3557 ir_node *res = _expression_to_firm(expression);
3558 assert(res == NULL || get_irn_mode(res) != mode_b);
3562 if (is_constant_expression(expression)) {
3563 ir_node *res = _expression_to_firm(expression);
3564 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3565 assert(is_Const(res));
3566 if (is_Const_null(res)) {
3567 return new_Const_long(mode, 0);
3569 return new_Const_long(mode, 1);
3573 /* we have to produce a 0/1 from the mode_b expression */
3574 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3575 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3576 return produce_condition_result(expression, mode, dbgi);
3580 * create a short-circuit expression evaluation that tries to construct
3581 * efficient control flow structures for &&, || and ! expressions
3583 static ir_node *create_condition_evaluation(const expression_t *expression,
3584 ir_node *true_block,
3585 ir_node *false_block)
3587 switch(expression->kind) {
3588 case EXPR_UNARY_NOT: {
3589 const unary_expression_t *unary_expression = &expression->unary;
3590 create_condition_evaluation(unary_expression->value, false_block,
3594 case EXPR_BINARY_LOGICAL_AND: {
3595 const binary_expression_t *binary_expression = &expression->binary;
3597 ir_node *extra_block = new_immBlock();
3598 create_condition_evaluation(binary_expression->left, extra_block,
3600 mature_immBlock(extra_block);
3601 set_cur_block(extra_block);
3602 create_condition_evaluation(binary_expression->right, true_block,
3606 case EXPR_BINARY_LOGICAL_OR: {
3607 const binary_expression_t *binary_expression = &expression->binary;
3609 ir_node *extra_block = new_immBlock();
3610 create_condition_evaluation(binary_expression->left, true_block,
3612 mature_immBlock(extra_block);
3613 set_cur_block(extra_block);
3614 create_condition_evaluation(binary_expression->right, true_block,
3622 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3623 ir_node *cond_expr = _expression_to_firm(expression);
3624 ir_node *condition = create_conv(dbgi, cond_expr, mode_b);
3625 ir_node *cond = new_d_Cond(dbgi, condition);
3626 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3627 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3629 /* set branch prediction info based on __builtin_expect */
3630 if (is_builtin_expect(expression) && is_Cond(cond)) {
3631 call_argument_t *argument = expression->call.arguments->next;
3632 if (is_constant_expression(argument->expression)) {
3633 bool cnst = fold_constant_to_bool(argument->expression);
3634 cond_jmp_predicate pred;
3636 if (cnst == false) {
3637 pred = COND_JMP_PRED_FALSE;
3639 pred = COND_JMP_PRED_TRUE;
3641 set_Cond_jmp_pred(cond, pred);
3645 add_immBlock_pred(true_block, true_proj);
3646 add_immBlock_pred(false_block, false_proj);
3648 set_cur_block(NULL);
3652 static void create_variable_entity(entity_t *variable,
3653 declaration_kind_t declaration_kind,
3654 ir_type *parent_type)
3656 assert(variable->kind == ENTITY_VARIABLE);
3657 type_t *type = skip_typeref(variable->declaration.type);
3659 ident *const id = new_id_from_str(variable->base.symbol->string);
3660 ir_type *const irtype = get_ir_type(type);
3661 dbg_info *const dbgi = get_dbg_info(&variable->base.source_position);
3662 ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi);
3663 unsigned alignment = variable->declaration.alignment;
3665 set_entity_alignment(irentity, alignment);
3667 handle_decl_modifiers(irentity, variable);
3669 variable->declaration.kind = (unsigned char) declaration_kind;
3670 variable->variable.v.entity = irentity;
3671 set_entity_variability(irentity, variability_uninitialized);
3672 set_entity_ld_ident(irentity, create_ld_ident(variable));
3674 if (parent_type == get_tls_type())
3675 set_entity_allocation(irentity, allocation_automatic);
3676 else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3677 set_entity_allocation(irentity, allocation_static);
3679 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3680 set_entity_volatility(irentity, volatility_is_volatile);
3685 typedef struct type_path_entry_t type_path_entry_t;
3686 struct type_path_entry_t {
3688 ir_initializer_t *initializer;
3690 entity_t *compound_entry;
3693 typedef struct type_path_t type_path_t;
3694 struct type_path_t {
3695 type_path_entry_t *path;
3700 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3702 size_t len = ARR_LEN(path->path);
3704 for (size_t i = 0; i < len; ++i) {
3705 const type_path_entry_t *entry = & path->path[i];
3707 type_t *type = skip_typeref(entry->type);
3708 if (is_type_compound(type)) {
3709 fprintf(stderr, ".%s", entry->compound_entry->base.symbol->string);
3710 } else if (is_type_array(type)) {
3711 fprintf(stderr, "[%u]", (unsigned) entry->index);
3713 fprintf(stderr, "-INVALID-");
3716 fprintf(stderr, " (");
3717 print_type(path->top_type);
3718 fprintf(stderr, ")");
3721 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3723 size_t len = ARR_LEN(path->path);
3725 return & path->path[len-1];
3728 static type_path_entry_t *append_to_type_path(type_path_t *path)
3730 size_t len = ARR_LEN(path->path);
3731 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3733 type_path_entry_t *result = & path->path[len];
3734 memset(result, 0, sizeof(result[0]));
3738 static size_t get_compound_member_count(const compound_type_t *type)
3740 compound_t *compound = type->compound;
3741 size_t n_members = 0;
3742 entity_t *member = compound->members.entities;
3743 for ( ; member != NULL; member = member->base.next) {
3750 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3752 type_t *orig_top_type = path->top_type;
3753 type_t *top_type = skip_typeref(orig_top_type);
3755 assert(is_type_compound(top_type) || is_type_array(top_type));
3757 if (ARR_LEN(path->path) == 0) {
3760 type_path_entry_t *top = get_type_path_top(path);
3761 ir_initializer_t *initializer = top->initializer;
3762 return get_initializer_compound_value(initializer, top->index);
3766 static void descend_into_subtype(type_path_t *path)
3768 type_t *orig_top_type = path->top_type;
3769 type_t *top_type = skip_typeref(orig_top_type);
3771 assert(is_type_compound(top_type) || is_type_array(top_type));
3773 ir_initializer_t *initializer = get_initializer_entry(path);
3775 type_path_entry_t *top = append_to_type_path(path);
3776 top->type = top_type;
3780 if (is_type_compound(top_type)) {
3781 compound_t *compound = top_type->compound.compound;
3782 entity_t *entry = compound->members.entities;
3784 top->compound_entry = entry;
3786 len = get_compound_member_count(&top_type->compound);
3787 if (entry != NULL) {
3788 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3789 path->top_type = entry->declaration.type;
3792 assert(is_type_array(top_type));
3793 assert(top_type->array.size > 0);
3796 path->top_type = top_type->array.element_type;
3797 len = top_type->array.size;
3799 if (initializer == NULL
3800 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3801 initializer = create_initializer_compound(len);
3802 /* we have to set the entry at the 2nd latest path entry... */
3803 size_t path_len = ARR_LEN(path->path);
3804 assert(path_len >= 1);
3806 type_path_entry_t *entry = & path->path[path_len-2];
3807 ir_initializer_t *tinitializer = entry->initializer;
3808 set_initializer_compound_value(tinitializer, entry->index,
3812 top->initializer = initializer;
3815 static void ascend_from_subtype(type_path_t *path)
3817 type_path_entry_t *top = get_type_path_top(path);
3819 path->top_type = top->type;
3821 size_t len = ARR_LEN(path->path);
3822 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3825 static void walk_designator(type_path_t *path, const designator_t *designator)
3827 /* designators start at current object type */
3828 ARR_RESIZE(type_path_entry_t, path->path, 1);
3830 for ( ; designator != NULL; designator = designator->next) {
3831 type_path_entry_t *top = get_type_path_top(path);
3832 type_t *orig_type = top->type;
3833 type_t *type = skip_typeref(orig_type);
3835 if (designator->symbol != NULL) {
3836 assert(is_type_compound(type));
3838 symbol_t *symbol = designator->symbol;
3840 compound_t *compound = type->compound.compound;
3841 entity_t *iter = compound->members.entities;
3842 for ( ; iter != NULL; iter = iter->base.next, ++index) {
3843 if (iter->base.symbol == symbol) {
3844 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
3848 assert(iter != NULL);
3850 /* revert previous initialisations of other union elements */
3851 if (type->kind == TYPE_COMPOUND_UNION) {
3852 ir_initializer_t *initializer = top->initializer;
3853 if (initializer != NULL
3854 && get_initializer_kind(initializer) == IR_INITIALIZER_COMPOUND) {
3855 /* are we writing to a new element? */
3856 ir_initializer_t *oldi
3857 = get_initializer_compound_value(initializer, index);
3858 if (get_initializer_kind(oldi) == IR_INITIALIZER_NULL) {
3859 /* clear initializer */
3861 = get_initializer_compound_n_entries(initializer);
3862 ir_initializer_t *nulli = get_initializer_null();
3863 for (size_t i = 0; i < len; ++i) {
3864 set_initializer_compound_value(initializer, i,
3871 top->type = orig_type;
3872 top->compound_entry = iter;
3874 orig_type = iter->declaration.type;
3876 expression_t *array_index = designator->array_index;
3877 assert(designator->array_index != NULL);
3878 assert(is_type_array(type));
3880 long index = fold_constant_to_int(array_index);
3883 if (type->array.size_constant) {
3884 long array_size = type->array.size;
3885 assert(index < array_size);
3889 top->type = orig_type;
3890 top->index = (size_t) index;
3891 orig_type = type->array.element_type;
3893 path->top_type = orig_type;
3895 if (designator->next != NULL) {
3896 descend_into_subtype(path);
3900 path->invalid = false;
3903 static void advance_current_object(type_path_t *path)
3905 if (path->invalid) {
3906 /* TODO: handle this... */
3907 panic("invalid initializer in ast2firm (excessive elements)");
3910 type_path_entry_t *top = get_type_path_top(path);
3912 type_t *type = skip_typeref(top->type);
3913 if (is_type_union(type)) {
3914 /* only the first element is initialized in unions */
3915 top->compound_entry = NULL;
3916 } else if (is_type_struct(type)) {
3917 entity_t *entry = top->compound_entry;
3920 entry = entry->base.next;
3921 top->compound_entry = entry;
3922 if (entry != NULL) {
3923 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3924 path->top_type = entry->declaration.type;
3928 assert(is_type_array(type));
3931 if (!type->array.size_constant || top->index < type->array.size) {
3936 /* we're past the last member of the current sub-aggregate, try if we
3937 * can ascend in the type hierarchy and continue with another subobject */
3938 size_t len = ARR_LEN(path->path);
3941 ascend_from_subtype(path);
3942 advance_current_object(path);
3944 path->invalid = true;
3949 static ir_initializer_t *create_ir_initializer(
3950 const initializer_t *initializer, type_t *type);
3952 static ir_initializer_t *create_ir_initializer_value(
3953 const initializer_value_t *initializer)
3955 if (is_type_compound(initializer->value->base.type)) {
3956 panic("initializer creation for compounds not implemented yet");
3958 type_t *type = initializer->value->base.type;
3959 expression_t *expr = initializer->value;
3960 if (initializer_use_bitfield_basetype) {
3961 type_t *skipped = skip_typeref(type);
3962 if (skipped->kind == TYPE_BITFIELD) {
3963 /* remove the bitfield cast... */
3964 assert(expr->kind == EXPR_UNARY_CAST_IMPLICIT);
3965 expr = expr->unary.value;
3966 type = skipped->bitfield.base_type;
3969 ir_node *value = expression_to_firm(expr);
3970 ir_mode *mode = get_ir_mode_storage(type);
3971 value = create_conv(NULL, value, mode);
3972 return create_initializer_const(value);
3975 /** test wether type can be initialized by a string constant */
3976 static bool is_string_type(type_t *type)
3979 if (is_type_pointer(type)) {
3980 inner = skip_typeref(type->pointer.points_to);
3981 } else if(is_type_array(type)) {
3982 inner = skip_typeref(type->array.element_type);
3987 return is_type_integer(inner);
3990 static ir_initializer_t *create_ir_initializer_list(
3991 const initializer_list_t *initializer, type_t *type)
3994 memset(&path, 0, sizeof(path));
3995 path.top_type = type;
3996 path.path = NEW_ARR_F(type_path_entry_t, 0);
3998 descend_into_subtype(&path);
4000 for (size_t i = 0; i < initializer->len; ++i) {
4001 const initializer_t *sub_initializer = initializer->initializers[i];
4003 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
4004 walk_designator(&path, sub_initializer->designator.designator);
4008 if (sub_initializer->kind == INITIALIZER_VALUE) {
4009 /* we might have to descend into types until we're at a scalar
4012 type_t *orig_top_type = path.top_type;
4013 type_t *top_type = skip_typeref(orig_top_type);
4015 if (is_type_scalar(top_type))
4017 descend_into_subtype(&path);
4019 } else if (sub_initializer->kind == INITIALIZER_STRING
4020 || sub_initializer->kind == INITIALIZER_WIDE_STRING) {
4021 /* we might have to descend into types until we're at a scalar
4024 type_t *orig_top_type = path.top_type;
4025 type_t *top_type = skip_typeref(orig_top_type);
4027 if (is_string_type(top_type))
4029 descend_into_subtype(&path);
4033 ir_initializer_t *sub_irinitializer
4034 = create_ir_initializer(sub_initializer, path.top_type);
4036 size_t path_len = ARR_LEN(path.path);
4037 assert(path_len >= 1);
4038 type_path_entry_t *entry = & path.path[path_len-1];
4039 ir_initializer_t *tinitializer = entry->initializer;
4040 set_initializer_compound_value(tinitializer, entry->index,
4043 advance_current_object(&path);
4046 assert(ARR_LEN(path.path) >= 1);
4047 ir_initializer_t *result = path.path[0].initializer;
4048 DEL_ARR_F(path.path);
4053 static ir_initializer_t *create_ir_initializer_string(
4054 const initializer_string_t *initializer, type_t *type)
4056 type = skip_typeref(type);
4058 size_t string_len = initializer->string.size;
4059 assert(type->kind == TYPE_ARRAY);
4060 assert(type->array.size_constant);
4061 size_t len = type->array.size;
4062 ir_initializer_t *irinitializer = create_initializer_compound(len);
4064 const char *string = initializer->string.begin;
4065 ir_mode *mode = get_ir_mode_storage(type->array.element_type);
4067 for (size_t i = 0; i < len; ++i) {
4072 tarval *tv = new_tarval_from_long(c, mode);
4073 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
4075 set_initializer_compound_value(irinitializer, i, char_initializer);
4078 return irinitializer;
4081 static ir_initializer_t *create_ir_initializer_wide_string(
4082 const initializer_wide_string_t *initializer, type_t *type)
4084 size_t string_len = initializer->string.size;
4085 assert(type->kind == TYPE_ARRAY);
4086 assert(type->array.size_constant);
4087 size_t len = type->array.size;
4088 ir_initializer_t *irinitializer = create_initializer_compound(len);
4090 const wchar_rep_t *string = initializer->string.begin;
4091 ir_mode *mode = get_type_mode(ir_type_wchar_t);
4093 for (size_t i = 0; i < len; ++i) {
4095 if (i < string_len) {
4098 tarval *tv = new_tarval_from_long(c, mode);
4099 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
4101 set_initializer_compound_value(irinitializer, i, char_initializer);
4104 return irinitializer;
4107 static ir_initializer_t *create_ir_initializer(
4108 const initializer_t *initializer, type_t *type)
4110 switch(initializer->kind) {
4111 case INITIALIZER_STRING:
4112 return create_ir_initializer_string(&initializer->string, type);
4114 case INITIALIZER_WIDE_STRING:
4115 return create_ir_initializer_wide_string(&initializer->wide_string,
4118 case INITIALIZER_LIST:
4119 return create_ir_initializer_list(&initializer->list, type);
4121 case INITIALIZER_VALUE:
4122 return create_ir_initializer_value(&initializer->value);
4124 case INITIALIZER_DESIGNATOR:
4125 panic("unexpected designator initializer found");
4127 panic("unknown initializer");
4130 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
4131 ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr)
4133 switch(get_initializer_kind(initializer)) {
4134 case IR_INITIALIZER_NULL: {
4135 /* NULL is undefined for dynamic initializers */
4138 case IR_INITIALIZER_CONST: {
4139 ir_node *node = get_initializer_const_value(initializer);
4140 ir_mode *mode = get_irn_mode(node);
4141 ir_type *ent_type = get_entity_type(entity);
4143 /* is it a bitfield type? */
4144 if (is_Primitive_type(ent_type) &&
4145 get_primitive_base_type(ent_type) != NULL) {
4146 bitfield_store_to_firm(dbgi, entity, base_addr, node, false);
4150 assert(get_type_mode(type) == mode);
4151 ir_node *mem = get_store();
4152 ir_node *store = new_d_Store(dbgi, mem, base_addr, node, cons_none);
4153 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4157 case IR_INITIALIZER_TARVAL: {
4158 tarval *tv = get_initializer_tarval_value(initializer);
4159 ir_mode *mode = get_tarval_mode(tv);
4160 ir_node *cnst = new_d_Const(dbgi, tv);
4161 ir_type *ent_type = get_entity_type(entity);
4163 /* is it a bitfield type? */
4164 if (is_Primitive_type(ent_type) &&
4165 get_primitive_base_type(ent_type) != NULL) {
4166 bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false);
4170 assert(get_type_mode(type) == mode);
4171 ir_node *mem = get_store();
4172 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst, cons_none);
4173 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4177 case IR_INITIALIZER_COMPOUND: {
4178 assert(is_compound_type(type));
4180 if (is_Array_type(type)) {
4181 assert(has_array_upper_bound(type, 0));
4182 n_members = get_array_upper_bound_int(type, 0);
4184 n_members = get_compound_n_members(type);
4187 if (get_initializer_compound_n_entries(initializer)
4188 != (unsigned) n_members)
4189 panic("initializer doesn't match compound type");
4191 for (int i = 0; i < n_members; ++i) {
4194 ir_entity *sub_entity;
4195 if (is_Array_type(type)) {
4196 tarval *index_tv = new_tarval_from_long(i, mode_uint);
4197 ir_node *cnst = new_d_Const(dbgi, index_tv);
4198 ir_node *in[1] = { cnst };
4199 irtype = get_array_element_type(type);
4200 sub_entity = get_array_element_entity(type);
4201 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
4204 sub_entity = get_compound_member(type, i);
4205 irtype = get_entity_type(sub_entity);
4206 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
4210 ir_initializer_t *sub_init
4211 = get_initializer_compound_value(initializer, i);
4213 create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
4220 panic("invalid IR_INITIALIZER found");
4223 static void create_dynamic_initializer(ir_initializer_t *initializer,
4224 dbg_info *dbgi, ir_entity *entity)
4226 ir_node *frame = get_irg_frame(current_ir_graph);
4227 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
4228 ir_type *type = get_entity_type(entity);
4230 create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
4233 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
4234 ir_entity *entity, type_t *type)
4236 ir_node *memory = get_store();
4237 ir_node *nomem = new_NoMem();
4238 ir_node *frame = get_irg_frame(current_ir_graph);
4239 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
4241 if (initializer->kind == INITIALIZER_VALUE) {
4242 initializer_value_t *initializer_value = &initializer->value;
4244 ir_node *value = expression_to_firm(initializer_value->value);
4245 type = skip_typeref(type);
4246 assign_value(dbgi, addr, type, value);
4250 if (!is_constant_initializer(initializer)) {
4251 bool old_initializer_use_bitfield_basetype
4252 = initializer_use_bitfield_basetype;
4253 initializer_use_bitfield_basetype = true;
4254 ir_initializer_t *irinitializer
4255 = create_ir_initializer(initializer, type);
4256 initializer_use_bitfield_basetype
4257 = old_initializer_use_bitfield_basetype;
4259 create_dynamic_initializer(irinitializer, dbgi, entity);
4263 /* create the ir_initializer */
4264 ir_graph *const old_current_ir_graph = current_ir_graph;
4265 current_ir_graph = get_const_code_irg();
4267 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
4269 assert(current_ir_graph == get_const_code_irg());
4270 current_ir_graph = old_current_ir_graph;
4272 /* create a "template" entity which is copied to the entity on the stack */
4273 ident *const id = id_unique("initializer.%u");
4274 ir_type *const irtype = get_ir_type(type);
4275 ir_type *const global_type = get_glob_type();
4276 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
4277 set_entity_ld_ident(init_entity, id);
4279 set_entity_variability(init_entity, variability_initialized);
4280 set_entity_visibility(init_entity, visibility_local);
4281 set_entity_allocation(init_entity, allocation_static);
4283 set_entity_initializer(init_entity, irinitializer);
4285 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
4286 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
4288 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
4289 set_store(copyb_mem);
4292 static void create_initializer_local_variable_entity(entity_t *entity)
4294 assert(entity->kind == ENTITY_VARIABLE);
4295 initializer_t *initializer = entity->variable.initializer;
4296 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4297 ir_entity *irentity = entity->variable.v.entity;
4298 type_t *type = entity->declaration.type;
4300 create_local_initializer(initializer, dbgi, irentity, type);
4303 static void create_variable_initializer(entity_t *entity)
4305 assert(entity->kind == ENTITY_VARIABLE);
4306 initializer_t *initializer = entity->variable.initializer;
4307 if (initializer == NULL)
4310 declaration_kind_t declaration_kind
4311 = (declaration_kind_t) entity->declaration.kind;
4312 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
4313 create_initializer_local_variable_entity(entity);
4317 type_t *type = entity->declaration.type;
4318 type_qualifiers_t tq = get_type_qualifier(type, true);
4320 if (initializer->kind == INITIALIZER_VALUE) {
4321 initializer_value_t *initializer_value = &initializer->value;
4322 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4324 ir_node *value = expression_to_firm(initializer_value->value);
4326 type_t *type = initializer_value->value->base.type;
4327 ir_mode *mode = get_ir_mode_storage(type);
4328 value = create_conv(dbgi, value, mode);
4329 value = do_strict_conv(dbgi, value);
4331 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
4332 set_value(entity->variable.v.value_number, value);
4334 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4336 ir_entity *irentity = entity->variable.v.entity;
4338 if (tq & TYPE_QUALIFIER_CONST) {
4339 set_entity_variability(irentity, variability_constant);
4341 set_entity_variability(irentity, variability_initialized);
4343 set_atomic_ent_value(irentity, value);
4346 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
4347 declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4349 ir_entity *irentity = entity->variable.v.entity;
4350 ir_initializer_t *irinitializer
4351 = create_ir_initializer(initializer, type);
4353 if (tq & TYPE_QUALIFIER_CONST) {
4354 set_entity_variability(irentity, variability_constant);
4356 set_entity_variability(irentity, variability_initialized);
4358 set_entity_initializer(irentity, irinitializer);
4362 static void create_variable_length_array(entity_t *entity)
4364 assert(entity->kind == ENTITY_VARIABLE);
4365 assert(entity->variable.initializer == NULL);
4367 entity->declaration.kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
4368 entity->variable.v.vla_base = NULL;
4370 /* TODO: record VLA somewhere so we create the free node when we leave
4374 static void allocate_variable_length_array(entity_t *entity)
4376 assert(entity->kind == ENTITY_VARIABLE);
4377 assert(entity->variable.initializer == NULL);
4378 assert(get_cur_block() != NULL);
4380 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4381 type_t *type = entity->declaration.type;
4382 ir_type *el_type = get_ir_type(type->array.element_type);
4384 /* make sure size_node is calculated */
4385 get_type_size_node(type);
4386 ir_node *elems = type->array.size_node;
4387 ir_node *mem = get_store();
4388 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
4390 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
4391 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
4394 assert(entity->declaration.kind == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
4395 entity->variable.v.vla_base = addr;
4399 * Creates a Firm local variable from a declaration.
4401 static void create_local_variable(entity_t *entity)
4403 assert(entity->kind == ENTITY_VARIABLE);
4404 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4406 bool needs_entity = entity->variable.address_taken;
4407 type_t *type = skip_typeref(entity->declaration.type);
4409 /* is it a variable length array? */
4410 if (is_type_array(type) && !type->array.size_constant) {
4411 create_variable_length_array(entity);
4413 } else if (is_type_array(type) || is_type_compound(type)) {
4414 needs_entity = true;
4415 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4416 needs_entity = true;
4420 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
4421 create_variable_entity(entity,
4422 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
4425 entity->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
4426 entity->variable.v.value_number = next_value_number_function;
4427 set_irg_loc_description(current_ir_graph, next_value_number_function,
4429 ++next_value_number_function;
4433 static void create_local_static_variable(entity_t *entity)
4435 assert(entity->kind == ENTITY_VARIABLE);
4436 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4438 type_t *type = skip_typeref(entity->declaration.type);
4439 ir_type *const var_type = entity->variable.thread_local ?
4440 get_tls_type() : get_glob_type();
4441 ir_type *const irtype = get_ir_type(type);
4442 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
4444 size_t l = strlen(entity->base.symbol->string);
4445 char buf[l + sizeof(".%u")];
4446 snprintf(buf, sizeof(buf), "%s.%%u", entity->base.symbol->string);
4447 ident *const id = id_unique(buf);
4449 ir_entity *const irentity = new_d_entity(var_type, id, irtype, dbgi);
4451 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4452 set_entity_volatility(irentity, volatility_is_volatile);
4455 entity->declaration.kind = DECLARATION_KIND_GLOBAL_VARIABLE;
4456 entity->variable.v.entity = irentity;
4458 set_entity_ld_ident(irentity, id);
4459 set_entity_variability(irentity, variability_uninitialized);
4460 set_entity_visibility(irentity, visibility_local);
4461 set_entity_allocation(irentity, entity->variable.thread_local ?
4462 allocation_automatic : allocation_static);
4464 ir_graph *const old_current_ir_graph = current_ir_graph;
4465 current_ir_graph = get_const_code_irg();
4467 create_variable_initializer(entity);
4469 assert(current_ir_graph == get_const_code_irg());
4470 current_ir_graph = old_current_ir_graph;
4475 static void return_statement_to_firm(return_statement_t *statement)
4477 if (get_cur_block() == NULL)
4480 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4481 type_t *type = current_function_entity->declaration.type;
4482 ir_type *func_irtype = get_ir_type(type);
4487 if (get_method_n_ress(func_irtype) > 0) {
4488 ir_type *res_type = get_method_res_type(func_irtype, 0);
4490 if (statement->value != NULL) {
4491 ir_node *node = expression_to_firm(statement->value);
4492 if (!is_compound_type(res_type)) {
4493 type_t *type = statement->value->base.type;
4494 ir_mode *mode = get_ir_mode_storage(type);
4495 node = create_conv(dbgi, node, mode);
4496 node = do_strict_conv(dbgi, node);
4501 if (is_compound_type(res_type)) {
4504 mode = get_type_mode(res_type);
4506 in[0] = new_Unknown(mode);
4510 /* build return_value for its side effects */
4511 if (statement->value != NULL) {
4512 expression_to_firm(statement->value);
4517 ir_node *store = get_store();
4518 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
4520 ir_node *end_block = get_irg_end_block(current_ir_graph);
4521 add_immBlock_pred(end_block, ret);
4523 set_cur_block(NULL);
4526 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
4528 if (get_cur_block() == NULL)
4531 return expression_to_firm(statement->expression);
4534 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
4536 entity_t *entity = compound->scope.entities;
4537 for ( ; entity != NULL; entity = entity->base.next) {
4538 if (!is_declaration(entity))
4541 create_local_declaration(entity);
4544 ir_node *result = NULL;
4545 statement_t *statement = compound->statements;
4546 for ( ; statement != NULL; statement = statement->base.next) {
4547 if (statement->base.next == NULL
4548 && statement->kind == STATEMENT_EXPRESSION) {
4549 result = expression_statement_to_firm(
4550 &statement->expression);
4553 statement_to_firm(statement);
4559 static void create_global_variable(entity_t *entity)
4561 assert(entity->kind == ENTITY_VARIABLE);
4564 switch ((storage_class_tag_t)entity->declaration.storage_class) {
4565 case STORAGE_CLASS_STATIC: vis = visibility_local; break;
4566 case STORAGE_CLASS_EXTERN: vis = visibility_external_allocated; break;
4567 case STORAGE_CLASS_NONE: vis = visibility_external_visible; break;
4569 default: panic("Invalid storage class for global variable");
4572 ir_type *var_type = entity->variable.thread_local ?
4573 get_tls_type() : get_glob_type();
4574 create_variable_entity(entity,
4575 DECLARATION_KIND_GLOBAL_VARIABLE, var_type);
4576 set_entity_visibility(entity->variable.v.entity, vis);
4579 static void create_local_declaration(entity_t *entity)
4581 assert(is_declaration(entity));
4583 /* construct type */
4584 (void) get_ir_type(entity->declaration.type);
4585 if (entity->base.symbol == NULL) {
4589 switch ((storage_class_tag_t) entity->declaration.storage_class) {
4590 case STORAGE_CLASS_STATIC:
4591 if (entity->kind == ENTITY_FUNCTION) {
4592 (void)get_function_entity(entity, NULL);
4594 create_local_static_variable(entity);
4597 case STORAGE_CLASS_EXTERN:
4598 if (entity->kind == ENTITY_FUNCTION) {
4599 assert(entity->function.statement == NULL);
4600 (void)get_function_entity(entity, NULL);
4602 create_global_variable(entity);
4603 create_variable_initializer(entity);
4606 case STORAGE_CLASS_NONE:
4607 case STORAGE_CLASS_AUTO:
4608 case STORAGE_CLASS_REGISTER:
4609 if (entity->kind == ENTITY_FUNCTION) {
4610 if (entity->function.statement != NULL) {
4611 ir_type *owner = get_irg_frame_type(current_ir_graph);
4612 (void)get_function_entity(entity, owner);
4613 entity->declaration.kind = DECLARATION_KIND_INNER_FUNCTION;
4614 enqueue_inner_function(entity);
4616 (void)get_function_entity(entity, NULL);
4619 create_local_variable(entity);
4622 case STORAGE_CLASS_TYPEDEF:
4625 panic("invalid storage class found");
4628 static void initialize_local_declaration(entity_t *entity)
4630 if (entity->base.symbol == NULL)
4633 // no need to emit code in dead blocks
4634 if (entity->declaration.storage_class != STORAGE_CLASS_STATIC
4635 && get_cur_block() == NULL)
4638 switch ((declaration_kind_t) entity->declaration.kind) {
4639 case DECLARATION_KIND_LOCAL_VARIABLE:
4640 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4641 create_variable_initializer(entity);
4644 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4645 allocate_variable_length_array(entity);
4648 case DECLARATION_KIND_COMPOUND_MEMBER:
4649 case DECLARATION_KIND_GLOBAL_VARIABLE:
4650 case DECLARATION_KIND_FUNCTION:
4651 case DECLARATION_KIND_INNER_FUNCTION:
4654 case DECLARATION_KIND_PARAMETER:
4655 case DECLARATION_KIND_PARAMETER_ENTITY:
4656 panic("can't initialize parameters");
4658 case DECLARATION_KIND_UNKNOWN:
4659 panic("can't initialize unknown declaration");
4661 panic("invalid declaration kind");
4664 static void declaration_statement_to_firm(declaration_statement_t *statement)
4666 entity_t *entity = statement->declarations_begin;
4670 entity_t *const last = statement->declarations_end;
4671 for ( ;; entity = entity->base.next) {
4672 if (is_declaration(entity)) {
4673 initialize_local_declaration(entity);
4674 } else if (entity->kind == ENTITY_TYPEDEF) {
4675 /* §6.7.7:3 Any array size expressions associated with variable length
4676 * array declarators are evaluated each time the declaration of the
4677 * typedef name is reached in the order of execution. */
4678 type_t *const type = skip_typeref(entity->typedefe.type);
4679 if (is_type_array(type) && type->array.is_vla)
4680 get_vla_size(&type->array);
4687 static void if_statement_to_firm(if_statement_t *statement)
4689 ir_node *cur_block = get_cur_block();
4691 ir_node *fallthrough_block = NULL;
4693 /* the true (blocks) */
4694 ir_node *true_block = NULL;
4695 if (statement->true_statement != NULL) {
4696 true_block = new_immBlock();
4697 set_cur_block(true_block);
4698 statement_to_firm(statement->true_statement);
4699 if (get_cur_block() != NULL) {
4700 ir_node *jmp = new_Jmp();
4701 if (fallthrough_block == NULL)
4702 fallthrough_block = new_immBlock();
4703 add_immBlock_pred(fallthrough_block, jmp);
4707 /* the false (blocks) */
4708 ir_node *false_block = NULL;
4709 if (statement->false_statement != NULL) {
4710 false_block = new_immBlock();
4711 set_cur_block(false_block);
4713 statement_to_firm(statement->false_statement);
4714 if (get_cur_block() != NULL) {
4715 ir_node *jmp = new_Jmp();
4716 if (fallthrough_block == NULL)
4717 fallthrough_block = new_immBlock();
4718 add_immBlock_pred(fallthrough_block, jmp);
4722 /* create the condition */
4723 if (cur_block != NULL) {
4724 if (true_block == NULL || false_block == NULL) {
4725 if (fallthrough_block == NULL)
4726 fallthrough_block = new_immBlock();
4727 if (true_block == NULL)
4728 true_block = fallthrough_block;
4729 if (false_block == NULL)
4730 false_block = fallthrough_block;
4733 set_cur_block(cur_block);
4734 create_condition_evaluation(statement->condition, true_block,
4738 mature_immBlock(true_block);
4739 if (false_block != fallthrough_block && false_block != NULL) {
4740 mature_immBlock(false_block);
4742 if (fallthrough_block != NULL) {
4743 mature_immBlock(fallthrough_block);
4746 set_cur_block(fallthrough_block);
4749 static void while_statement_to_firm(while_statement_t *statement)
4751 ir_node *jmp = NULL;
4752 if (get_cur_block() != NULL) {
4756 /* create the header block */
4757 ir_node *header_block = new_immBlock();
4759 add_immBlock_pred(header_block, jmp);
4763 ir_node *old_continue_label = continue_label;
4764 ir_node *old_break_label = break_label;
4765 continue_label = header_block;
4768 ir_node *body_block = new_immBlock();
4769 set_cur_block(body_block);
4770 statement_to_firm(statement->body);
4771 ir_node *false_block = break_label;
4773 assert(continue_label == header_block);
4774 continue_label = old_continue_label;
4775 break_label = old_break_label;
4777 if (get_cur_block() != NULL) {
4779 add_immBlock_pred(header_block, jmp);
4782 /* shortcut for while(true) */
4783 if (is_constant_expression(statement->condition)
4784 && fold_constant_to_bool(statement->condition) != 0) {
4785 set_cur_block(header_block);
4786 ir_node *header_jmp = new_Jmp();
4787 add_immBlock_pred(body_block, header_jmp);
4789 keep_alive(body_block);
4790 keep_all_memory(body_block);
4791 set_cur_block(body_block);
4793 if (false_block == NULL) {
4794 false_block = new_immBlock();
4797 /* create the condition */
4798 set_cur_block(header_block);
4800 create_condition_evaluation(statement->condition, body_block,
4804 mature_immBlock(body_block);
4805 mature_immBlock(header_block);
4806 if (false_block != NULL) {
4807 mature_immBlock(false_block);
4810 set_cur_block(false_block);
4813 static void do_while_statement_to_firm(do_while_statement_t *statement)
4815 ir_node *jmp = NULL;
4816 if (get_cur_block() != NULL) {
4820 /* create the header block */
4821 ir_node *header_block = new_immBlock();
4824 ir_node *body_block = new_immBlock();
4826 add_immBlock_pred(body_block, jmp);
4829 ir_node *old_continue_label = continue_label;
4830 ir_node *old_break_label = break_label;
4831 continue_label = header_block;
4834 set_cur_block(body_block);
4835 statement_to_firm(statement->body);
4836 ir_node *false_block = break_label;
4838 assert(continue_label == header_block);
4839 continue_label = old_continue_label;
4840 break_label = old_break_label;
4842 if (get_cur_block() != NULL) {
4843 ir_node *body_jmp = new_Jmp();
4844 add_immBlock_pred(header_block, body_jmp);
4845 mature_immBlock(header_block);
4848 if (false_block == NULL) {
4849 false_block = new_immBlock();
4852 /* create the condition */
4853 set_cur_block(header_block);
4855 create_condition_evaluation(statement->condition, body_block, false_block);
4856 mature_immBlock(body_block);
4857 mature_immBlock(header_block);
4858 mature_immBlock(false_block);
4860 set_cur_block(false_block);
4863 static void for_statement_to_firm(for_statement_t *statement)
4865 ir_node *jmp = NULL;
4867 /* create declarations */
4868 entity_t *entity = statement->scope.entities;
4869 for ( ; entity != NULL; entity = entity->base.next) {
4870 if (!is_declaration(entity))
4873 create_local_declaration(entity);
4876 if (get_cur_block() != NULL) {
4877 entity = statement->scope.entities;
4878 for ( ; entity != NULL; entity = entity->base.next) {
4879 if (!is_declaration(entity))
4882 initialize_local_declaration(entity);
4885 if (statement->initialisation != NULL) {
4886 expression_to_firm(statement->initialisation);
4893 /* create the step block */
4894 ir_node *const step_block = new_immBlock();
4895 set_cur_block(step_block);
4896 if (statement->step != NULL) {
4897 expression_to_firm(statement->step);
4899 ir_node *const step_jmp = new_Jmp();
4901 /* create the header block */
4902 ir_node *const header_block = new_immBlock();
4903 set_cur_block(header_block);
4905 add_immBlock_pred(header_block, jmp);
4907 add_immBlock_pred(header_block, step_jmp);
4909 /* the false block */
4910 ir_node *const false_block = new_immBlock();
4913 ir_node *body_block;
4914 if (statement->body != NULL) {
4915 ir_node *const old_continue_label = continue_label;
4916 ir_node *const old_break_label = break_label;
4917 continue_label = step_block;
4918 break_label = false_block;
4920 body_block = new_immBlock();
4921 set_cur_block(body_block);
4922 statement_to_firm(statement->body);
4924 assert(continue_label == step_block);
4925 assert(break_label == false_block);
4926 continue_label = old_continue_label;
4927 break_label = old_break_label;
4929 if (get_cur_block() != NULL) {
4931 add_immBlock_pred(step_block, jmp);
4934 body_block = step_block;
4937 /* create the condition */
4938 set_cur_block(header_block);
4939 if (statement->condition != NULL) {
4940 create_condition_evaluation(statement->condition, body_block,
4943 keep_alive(header_block);
4944 keep_all_memory(header_block);
4946 add_immBlock_pred(body_block, jmp);
4949 mature_immBlock(body_block);
4950 mature_immBlock(false_block);
4951 mature_immBlock(step_block);
4952 mature_immBlock(header_block);
4953 mature_immBlock(false_block);
4955 set_cur_block(false_block);
4958 static void create_jump_statement(const statement_t *statement,
4959 ir_node *target_block)
4961 if (get_cur_block() == NULL)
4964 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4965 ir_node *jump = new_d_Jmp(dbgi);
4966 add_immBlock_pred(target_block, jump);
4968 set_cur_block(NULL);
4971 static ir_node *get_break_label(void)
4973 if (break_label == NULL) {
4974 break_label = new_immBlock();
4979 static void switch_statement_to_firm(switch_statement_t *statement)
4981 ir_node *first_block = NULL;
4982 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4983 ir_node *cond = NULL;
4985 if (get_cur_block() != NULL) {
4986 ir_node *expression = expression_to_firm(statement->expression);
4987 cond = new_d_Cond(dbgi, expression);
4988 first_block = get_cur_block();
4991 set_cur_block(NULL);
4993 ir_node *const old_switch_cond = current_switch_cond;
4994 ir_node *const old_break_label = break_label;
4995 const bool old_saw_default_label = saw_default_label;
4996 saw_default_label = false;
4997 current_switch_cond = cond;
4999 switch_statement_t *const old_switch = current_switch;
5000 current_switch = statement;
5002 /* determine a free number for the default label */
5003 unsigned long num_cases = 0;
5005 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
5006 if (l->expression == NULL) {
5010 if (l->last_case >= l->first_case)
5011 num_cases += l->last_case - l->first_case + 1;
5012 if (l->last_case > def_nr)
5013 def_nr = l->last_case;
5016 if (def_nr == INT_MAX) {
5017 /* Bad: an overflow will occur, we cannot be sure that the
5018 * maximum + 1 is a free number. Scan the values a second
5019 * time to find a free number.
5021 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
5023 memset(bits, 0, (num_cases + 7) >> 3);
5024 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
5025 if (l->expression == NULL) {
5029 unsigned long start = l->first_case > 0 ? (unsigned long)l->first_case : 0;
5030 if (start < num_cases && l->last_case >= 0) {
5031 unsigned long end = (unsigned long)l->last_case < num_cases ?
5032 (unsigned long)l->last_case : num_cases - 1;
5033 for (unsigned long cns = start; cns <= end; ++cns) {
5034 bits[cns >> 3] |= (1 << (cns & 7));
5038 /* We look at the first num_cases constants:
5039 * Either they are dense, so we took the last (num_cases)
5040 * one, or they are not dense, so we will find one free
5044 for (i = 0; i < num_cases; ++i)
5045 if ((bits[i >> 3] & (1 << (i & 7))) == 0)
5053 statement->default_proj_nr = def_nr;
5055 if (statement->body != NULL) {
5056 statement_to_firm(statement->body);
5059 if (get_cur_block() != NULL) {
5060 ir_node *jmp = new_Jmp();
5061 add_immBlock_pred(get_break_label(), jmp);
5064 if (!saw_default_label && first_block != NULL) {
5065 set_cur_block(first_block);
5066 ir_node *const proj = new_d_defaultProj(dbgi, cond,
5067 statement->default_proj_nr);
5068 add_immBlock_pred(get_break_label(), proj);
5071 if (break_label != NULL) {
5072 mature_immBlock(break_label);
5074 set_cur_block(break_label);
5076 assert(current_switch_cond == cond);
5077 current_switch = old_switch;
5078 current_switch_cond = old_switch_cond;
5079 break_label = old_break_label;
5080 saw_default_label = old_saw_default_label;
5083 static void case_label_to_firm(const case_label_statement_t *statement)
5085 if (statement->is_empty_range)
5088 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5090 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
5093 ir_node *block = new_immBlock();
5095 if (current_switch_cond != NULL) {
5096 set_cur_block(get_nodes_block(current_switch_cond));
5097 if (statement->expression != NULL) {
5098 long pn = statement->first_case;
5099 long end_pn = statement->last_case;
5100 assert(pn <= end_pn);
5101 /* create jumps for all cases in the given range */
5103 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
5104 add_immBlock_pred(block, proj);
5105 } while (pn++ < end_pn);
5107 saw_default_label = true;
5108 proj = new_d_defaultProj(dbgi, current_switch_cond,
5109 current_switch->default_proj_nr);
5111 add_immBlock_pred(block, proj);
5115 if (fallthrough != NULL) {
5116 add_immBlock_pred(block, fallthrough);
5118 mature_immBlock(block);
5119 set_cur_block(block);
5121 if (statement->statement != NULL) {
5122 statement_to_firm(statement->statement);
5126 static void label_to_firm(const label_statement_t *statement)
5128 ir_node *block = get_label_block(statement->label);
5130 if (get_cur_block() != NULL) {
5131 ir_node *jmp = new_Jmp();
5132 add_immBlock_pred(block, jmp);
5135 set_cur_block(block);
5137 keep_all_memory(block);
5139 if (statement->statement != NULL) {
5140 statement_to_firm(statement->statement);
5144 static void goto_to_firm(const goto_statement_t *statement)
5146 if (get_cur_block() == NULL)
5149 if (statement->expression) {
5150 ir_node *irn = expression_to_firm(statement->expression);
5151 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5152 ir_node *ijmp = new_d_IJmp(dbgi, irn);
5154 set_irn_link(ijmp, ijmp_list);
5157 ir_node *block = get_label_block(statement->label);
5158 ir_node *jmp = new_Jmp();
5159 add_immBlock_pred(block, jmp);
5161 set_cur_block(NULL);
5164 static void asm_statement_to_firm(const asm_statement_t *statement)
5166 bool needs_memory = false;
5168 if (statement->is_volatile) {
5169 needs_memory = true;
5172 size_t n_clobbers = 0;
5173 asm_clobber_t *clobber = statement->clobbers;
5174 for ( ; clobber != NULL; clobber = clobber->next) {
5175 const char *clobber_str = clobber->clobber.begin;
5177 if (!be_is_valid_clobber(clobber_str)) {
5178 errorf(&statement->base.source_position,
5179 "invalid clobber '%s' specified", clobber->clobber);
5183 if (strcmp(clobber_str, "memory") == 0) {
5184 needs_memory = true;
5188 ident *id = new_id_from_str(clobber_str);
5189 obstack_ptr_grow(&asm_obst, id);
5192 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
5193 ident **clobbers = NULL;
5194 if (n_clobbers > 0) {
5195 clobbers = obstack_finish(&asm_obst);
5198 size_t n_inputs = 0;
5199 asm_argument_t *argument = statement->inputs;
5200 for ( ; argument != NULL; argument = argument->next)
5202 size_t n_outputs = 0;
5203 argument = statement->outputs;
5204 for ( ; argument != NULL; argument = argument->next)
5207 unsigned next_pos = 0;
5209 ir_node *ins[n_inputs + n_outputs + 1];
5212 ir_asm_constraint tmp_in_constraints[n_outputs];
5214 const expression_t *out_exprs[n_outputs];
5215 ir_node *out_addrs[n_outputs];
5216 size_t out_size = 0;
5218 argument = statement->outputs;
5219 for ( ; argument != NULL; argument = argument->next) {
5220 const char *constraints = argument->constraints.begin;
5221 asm_constraint_flags_t asm_flags
5222 = be_parse_asm_constraints(constraints);
5224 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5225 warningf(&statement->base.source_position,
5226 "some constraints in '%s' are not supported", constraints);
5228 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5229 errorf(&statement->base.source_position,
5230 "some constraints in '%s' are invalid", constraints);
5233 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
5234 errorf(&statement->base.source_position,
5235 "no write flag specified for output constraints '%s'",
5240 unsigned pos = next_pos++;
5241 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5242 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5243 expression_t *expr = argument->expression;
5244 ir_node *addr = expression_to_addr(expr);
5245 /* in+output, construct an artifical same_as constraint on the
5247 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
5249 ir_node *value = get_value_from_lvalue(expr, addr);
5251 snprintf(buf, sizeof(buf), "%u", (unsigned) out_size);
5253 ir_asm_constraint constraint;
5254 constraint.pos = pos;
5255 constraint.constraint = new_id_from_str(buf);
5256 constraint.mode = get_ir_mode_storage(expr->base.type);
5257 tmp_in_constraints[in_size] = constraint;
5258 ins[in_size] = value;
5263 out_exprs[out_size] = expr;
5264 out_addrs[out_size] = addr;
5266 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5267 /* pure memory ops need no input (but we have to make sure we
5268 * attach to the memory) */
5269 assert(! (asm_flags &
5270 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5271 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5272 needs_memory = true;
5274 /* we need to attach the address to the inputs */
5275 expression_t *expr = argument->expression;
5277 ir_asm_constraint constraint;
5278 constraint.pos = pos;
5279 constraint.constraint = new_id_from_str(constraints);
5280 constraint.mode = NULL;
5281 tmp_in_constraints[in_size] = constraint;
5283 ins[in_size] = expression_to_addr(expr);
5287 errorf(&statement->base.source_position,
5288 "only modifiers but no place set in constraints '%s'",
5293 ir_asm_constraint constraint;
5294 constraint.pos = pos;
5295 constraint.constraint = new_id_from_str(constraints);
5296 constraint.mode = get_ir_mode_storage(argument->expression->base.type);
5298 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5300 assert(obstack_object_size(&asm_obst)
5301 == out_size * sizeof(ir_asm_constraint));
5302 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
5305 obstack_grow(&asm_obst, tmp_in_constraints,
5306 in_size * sizeof(tmp_in_constraints[0]));
5307 /* find and count input and output arguments */
5308 argument = statement->inputs;
5309 for ( ; argument != NULL; argument = argument->next) {
5310 const char *constraints = argument->constraints.begin;
5311 asm_constraint_flags_t asm_flags
5312 = be_parse_asm_constraints(constraints);
5314 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5315 errorf(&statement->base.source_position,
5316 "some constraints in '%s' are not supported", constraints);
5319 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5320 errorf(&statement->base.source_position,
5321 "some constraints in '%s' are invalid", constraints);
5324 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
5325 errorf(&statement->base.source_position,
5326 "write flag specified for input constraints '%s'",
5332 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5333 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5334 /* we can treat this as "normal" input */
5335 input = expression_to_firm(argument->expression);
5336 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5337 /* pure memory ops need no input (but we have to make sure we
5338 * attach to the memory) */
5339 assert(! (asm_flags &
5340 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5341 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5342 needs_memory = true;
5343 input = expression_to_addr(argument->expression);
5345 errorf(&statement->base.source_position,
5346 "only modifiers but no place set in constraints '%s'",
5351 ir_asm_constraint constraint;
5352 constraint.pos = next_pos++;
5353 constraint.constraint = new_id_from_str(constraints);
5354 constraint.mode = get_irn_mode(input);
5356 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5357 ins[in_size++] = input;
5361 ir_asm_constraint constraint;
5362 constraint.pos = next_pos++;
5363 constraint.constraint = new_id_from_str("");
5364 constraint.mode = mode_M;
5366 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5367 ins[in_size++] = get_store();
5370 assert(obstack_object_size(&asm_obst)
5371 == in_size * sizeof(ir_asm_constraint));
5372 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
5374 /* create asm node */
5375 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5377 ident *asm_text = new_id_from_str(statement->asm_text.begin);
5379 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
5380 out_size, output_constraints,
5381 n_clobbers, clobbers, asm_text);
5383 if (statement->is_volatile) {
5384 set_irn_pinned(node, op_pin_state_pinned);
5386 set_irn_pinned(node, op_pin_state_floats);
5389 /* create output projs & connect them */
5391 ir_node *projm = new_Proj(node, mode_M, out_size+1);
5396 for (i = 0; i < out_size; ++i) {
5397 const expression_t *out_expr = out_exprs[i];
5399 ir_mode *mode = get_ir_mode_storage(out_expr->base.type);
5400 ir_node *proj = new_Proj(node, mode, pn);
5401 ir_node *addr = out_addrs[i];
5403 set_value_for_expression_addr(out_expr, proj, addr);
5407 static void ms_try_statement_to_firm(ms_try_statement_t *statement)
5409 statement_to_firm(statement->try_statement);
5410 warningf(&statement->base.source_position, "structured exception handling ignored");
5413 static void leave_statement_to_firm(leave_statement_t *statement)
5415 errorf(&statement->base.source_position, "__leave not supported yet");
5419 * Transform a statement.
5421 static void statement_to_firm(statement_t *statement)
5424 assert(!statement->base.transformed);
5425 statement->base.transformed = true;
5428 switch (statement->kind) {
5429 case STATEMENT_INVALID:
5430 panic("invalid statement found");
5431 case STATEMENT_EMPTY:
5434 case STATEMENT_COMPOUND:
5435 compound_statement_to_firm(&statement->compound);
5437 case STATEMENT_RETURN:
5438 return_statement_to_firm(&statement->returns);
5440 case STATEMENT_EXPRESSION:
5441 expression_statement_to_firm(&statement->expression);
5444 if_statement_to_firm(&statement->ifs);
5446 case STATEMENT_WHILE:
5447 while_statement_to_firm(&statement->whiles);
5449 case STATEMENT_DO_WHILE:
5450 do_while_statement_to_firm(&statement->do_while);
5452 case STATEMENT_DECLARATION:
5453 declaration_statement_to_firm(&statement->declaration);
5455 case STATEMENT_BREAK:
5456 create_jump_statement(statement, get_break_label());
5458 case STATEMENT_CONTINUE:
5459 create_jump_statement(statement, continue_label);
5461 case STATEMENT_SWITCH:
5462 switch_statement_to_firm(&statement->switchs);
5464 case STATEMENT_CASE_LABEL:
5465 case_label_to_firm(&statement->case_label);
5468 for_statement_to_firm(&statement->fors);
5470 case STATEMENT_LABEL:
5471 label_to_firm(&statement->label);
5473 case STATEMENT_GOTO:
5474 goto_to_firm(&statement->gotos);
5477 asm_statement_to_firm(&statement->asms);
5479 case STATEMENT_MS_TRY:
5480 ms_try_statement_to_firm(&statement->ms_try);
5482 case STATEMENT_LEAVE:
5483 leave_statement_to_firm(&statement->leave);
5486 panic("statement not implemented");
5489 static int count_local_variables(const entity_t *entity,
5490 const entity_t *const last)
5493 entity_t const *const end = last != NULL ? last->base.next : NULL;
5494 for (; entity != end; entity = entity->base.next) {
5498 if (entity->kind == ENTITY_VARIABLE) {
5499 type = skip_typeref(entity->declaration.type);
5500 address_taken = entity->variable.address_taken;
5501 } else if (entity->kind == ENTITY_PARAMETER) {
5502 type = skip_typeref(entity->declaration.type);
5503 address_taken = entity->parameter.address_taken;
5508 if (!address_taken && is_type_scalar(type))
5514 static void count_local_variables_in_stmt(statement_t *stmt, void *const env)
5516 int *const count = env;
5518 switch (stmt->kind) {
5519 case STATEMENT_DECLARATION: {
5520 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5521 *count += count_local_variables(decl_stmt->declarations_begin,
5522 decl_stmt->declarations_end);
5527 *count += count_local_variables(stmt->fors.scope.entities, NULL);
5536 * Return the number of local (alias free) variables used by a function.
5538 static int get_function_n_local_vars(entity_t *entity)
5540 const function_t *function = &entity->function;
5543 /* count parameters */
5544 count += count_local_variables(function->parameters.entities, NULL);
5546 /* count local variables declared in body */
5547 walk_statements(function->statement, count_local_variables_in_stmt, &count);
5552 * Build Firm code for the parameters of a function.
5554 static void initialize_function_parameters(entity_t *entity)
5556 assert(entity->kind == ENTITY_FUNCTION);
5557 ir_graph *irg = current_ir_graph;
5558 ir_node *args = get_irg_args(irg);
5559 ir_node *start_block = get_irg_start_block(irg);
5560 ir_type *function_irtype = get_ir_type(entity->declaration.type);
5561 int first_param_nr = 0;
5563 if (entity->function.need_closure) {
5564 /* add an extra parameter for the static link */
5565 entity->function.static_link = new_r_Proj(start_block, args, mode_P_data, 0);
5570 entity_t *parameter = entity->function.parameters.entities;
5571 for ( ; parameter != NULL; parameter = parameter->base.next, ++n) {
5572 if (parameter->kind != ENTITY_PARAMETER)
5575 assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN);
5576 type_t *type = skip_typeref(parameter->declaration.type);
5578 bool needs_entity = parameter->parameter.address_taken;
5579 assert(!is_type_array(type));
5580 if (is_type_compound(type)) {
5581 needs_entity = true;
5585 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5586 ident *id = new_id_from_str(parameter->base.symbol->string);
5587 set_entity_ident(entity, id);
5589 parameter->declaration.kind
5590 = DECLARATION_KIND_PARAMETER_ENTITY;
5591 parameter->parameter.v.entity = entity;
5595 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5596 ir_mode *param_mode = get_type_mode(param_irtype);
5598 long pn = n + first_param_nr;
5599 ir_node *value = new_r_Proj(start_block, args, param_mode, pn);
5601 ir_mode *mode = get_ir_mode_storage(type);
5602 value = create_conv(NULL, value, mode);
5603 value = do_strict_conv(NULL, value);
5605 parameter->declaration.kind = DECLARATION_KIND_PARAMETER;
5606 parameter->parameter.v.value_number = next_value_number_function;
5607 set_irg_loc_description(current_ir_graph, next_value_number_function,
5609 ++next_value_number_function;
5611 set_value(parameter->parameter.v.value_number, value);
5616 * Handle additional decl modifiers for IR-graphs
5618 * @param irg the IR-graph
5619 * @param dec_modifiers additional modifiers
5621 static void handle_decl_modifier_irg(ir_graph_ptr irg,
5622 decl_modifiers_t decl_modifiers)
5624 if (decl_modifiers & DM_RETURNS_TWICE) {
5625 /* TRUE if the declaration includes __attribute__((returns_twice)) */
5626 set_irg_additional_property(irg, mtp_property_returns_twice);
5628 if (decl_modifiers & DM_NORETURN) {
5629 /* TRUE if the declaration includes the Microsoft
5630 __declspec(noreturn) specifier. */
5631 set_irg_additional_property(irg, mtp_property_noreturn);
5633 if (decl_modifiers & DM_NOTHROW) {
5634 /* TRUE if the declaration includes the Microsoft
5635 __declspec(nothrow) specifier. */
5636 set_irg_additional_property(irg, mtp_property_nothrow);
5638 if (decl_modifiers & DM_NAKED) {
5639 /* TRUE if the declaration includes the Microsoft
5640 __declspec(naked) specifier. */
5641 set_irg_additional_property(irg, mtp_property_naked);
5643 if (decl_modifiers & DM_FORCEINLINE) {
5644 /* TRUE if the declaration includes the
5645 Microsoft __forceinline specifier. */
5646 set_irg_inline_property(irg, irg_inline_forced);
5648 if (decl_modifiers & DM_NOINLINE) {
5649 /* TRUE if the declaration includes the Microsoft
5650 __declspec(noinline) specifier. */
5651 set_irg_inline_property(irg, irg_inline_forbidden);
5655 static void add_function_pointer(ir_type *segment, ir_entity *method,
5656 const char *unique_template)
5658 ir_type *method_type = get_entity_type(method);
5659 ident *id = id_unique(unique_template);
5660 ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code);
5662 ident *ide = id_unique(unique_template);
5663 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5664 ir_graph *irg = get_const_code_irg();
5665 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5668 set_entity_compiler_generated(ptr, 1);
5669 set_entity_variability(ptr, variability_constant);
5670 set_atomic_ent_value(ptr, val);
5674 * Generate possible IJmp branches to a given label block.
5676 static void gen_ijmp_branches(ir_node *block)
5679 for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) {
5680 add_immBlock_pred(block, ijmp);
5685 * Create code for a function and all inner functions.
5687 * @param entity the function entity
5689 static void create_function(entity_t *entity)
5691 assert(entity->kind == ENTITY_FUNCTION);
5692 ir_entity *function_entity = get_function_entity(entity, current_outer_frame);
5694 if (entity->function.statement == NULL)
5697 if (is_main(entity) && firm_opt.os_support == OS_SUPPORT_MINGW) {
5698 prepare_main_collect2(entity);
5701 inner_functions = NULL;
5702 current_trampolines = NULL;
5704 if (entity->declaration.modifiers & DM_CONSTRUCTOR) {
5705 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5706 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5708 if (entity->declaration.modifiers & DM_DESTRUCTOR) {
5709 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5710 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5713 current_function_entity = entity;
5714 current_function_name = NULL;
5715 current_funcsig = NULL;
5717 assert(all_labels == NULL);
5718 all_labels = NEW_ARR_F(label_t *, 0);
5721 int n_local_vars = get_function_n_local_vars(entity);
5722 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5724 ir_graph *old_current_function = current_function;
5725 current_function = irg;
5727 set_irg_fp_model(irg, firm_opt.fp_model);
5728 tarval_enable_fp_ops(1);
5729 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5731 ir_node *first_block = get_cur_block();
5733 /* set inline flags */
5734 if (entity->function.is_inline)
5735 set_irg_inline_property(irg, irg_inline_recomended);
5736 handle_decl_modifier_irg(irg, entity->declaration.modifiers);
5738 next_value_number_function = 0;
5739 initialize_function_parameters(entity);
5740 current_static_link = entity->function.static_link;
5742 statement_to_firm(entity->function.statement);
5744 ir_node *end_block = get_irg_end_block(irg);
5746 /* do we have a return statement yet? */
5747 if (get_cur_block() != NULL) {
5748 type_t *type = skip_typeref(entity->declaration.type);
5749 assert(is_type_function(type));
5750 const function_type_t *func_type = &type->function;
5751 const type_t *return_type
5752 = skip_typeref(func_type->return_type);
5755 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5756 ret = new_Return(get_store(), 0, NULL);
5759 if (is_type_scalar(return_type)) {
5760 mode = get_ir_mode_storage(func_type->return_type);
5766 /* §5.1.2.2.3 main implicitly returns 0 */
5767 if (is_main(entity)) {
5768 in[0] = new_Const(get_mode_null(mode));
5770 in[0] = new_Unknown(mode);
5772 ret = new_Return(get_store(), 1, in);
5774 add_immBlock_pred(end_block, ret);
5777 bool has_computed_gotos = false;
5778 for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
5779 label_t *label = all_labels[i];
5780 if (label->address_taken) {
5781 gen_ijmp_branches(label->block);
5782 has_computed_gotos = true;
5784 mature_immBlock(label->block);
5786 if (has_computed_gotos) {
5787 /* if we have computed goto's in the function, we cannot inline it */
5788 if (get_irg_inline_property(irg) >= irg_inline_recomended) {
5789 warningf(&entity->base.source_position,
5790 "function '%Y' can never be inlined because it contains a computed goto",
5791 entity->base.symbol);
5793 set_irg_inline_property(irg, irg_inline_forbidden);
5796 DEL_ARR_F(all_labels);
5799 mature_immBlock(first_block);
5800 mature_immBlock(end_block);
5802 irg_finalize_cons(irg);
5804 /* finalize the frame type */
5805 ir_type *frame_type = get_irg_frame_type(irg);
5806 int n = get_compound_n_members(frame_type);
5809 for (int i = 0; i < n; ++i) {
5810 ir_entity *entity = get_compound_member(frame_type, i);
5811 ir_type *entity_type = get_entity_type(entity);
5813 int align = get_type_alignment_bytes(entity_type);
5814 if (align > align_all)
5818 misalign = offset % align;
5820 offset += align - misalign;
5824 set_entity_offset(entity, offset);
5825 offset += get_type_size_bytes(entity_type);
5827 set_type_size_bytes(frame_type, offset);
5828 set_type_alignment_bytes(frame_type, align_all);
5831 current_function = old_current_function;
5833 if (current_trampolines != NULL) {
5834 DEL_ARR_F(current_trampolines);
5835 current_trampolines = NULL;
5838 /* create inner functions if any */
5839 entity_t **inner = inner_functions;
5840 if (inner != NULL) {
5841 ir_type *rem_outer_frame = current_outer_frame;
5842 current_outer_frame = get_irg_frame_type(current_ir_graph);
5843 ir_type *rem_outer_value_type = current_outer_value_type;
5844 current_outer_value_type = get_irg_value_param_type(current_ir_graph);
5845 for (int i = ARR_LEN(inner) - 1; i >= 0; --i) {
5846 create_function(inner[i]);
5850 current_outer_value_type = rem_outer_value_type;
5851 current_outer_frame = rem_outer_frame;
5855 static void scope_to_firm(scope_t *scope)
5857 /* first pass: create declarations */
5858 entity_t *entity = scope->entities;
5859 for ( ; entity != NULL; entity = entity->base.next) {
5860 if (entity->base.symbol == NULL)
5863 if (entity->kind == ENTITY_FUNCTION) {
5864 if (entity->function.btk != bk_none) {
5865 /* builtins have no representation */
5868 (void)get_function_entity(entity, NULL);
5869 } else if (entity->kind == ENTITY_VARIABLE) {
5870 create_global_variable(entity);
5871 } else if (entity->kind == ENTITY_NAMESPACE) {
5872 scope_to_firm(&entity->namespacee.members);
5876 /* second pass: create code/initializers */
5877 entity = scope->entities;
5878 for ( ; entity != NULL; entity = entity->base.next) {
5879 if (entity->base.symbol == NULL)
5882 if (entity->kind == ENTITY_FUNCTION) {
5883 if (entity->function.btk != bk_none) {
5884 /* builtins have no representation */
5887 create_function(entity);
5888 } else if (entity->kind == ENTITY_VARIABLE) {
5889 assert(entity->declaration.kind
5890 == DECLARATION_KIND_GLOBAL_VARIABLE);
5891 current_ir_graph = get_const_code_irg();
5892 create_variable_initializer(entity);
5897 void init_ast2firm(void)
5899 obstack_init(&asm_obst);
5900 init_atomic_modes();
5902 ir_set_dbg_retrieve(dbg_retrieve);
5904 /* OS option must be set to the backend */
5905 switch (firm_opt.os_support) {
5906 case OS_SUPPORT_MINGW:
5907 create_ld_ident = create_name_win32;
5909 case OS_SUPPORT_LINUX:
5910 create_ld_ident = create_name_linux_elf;
5912 case OS_SUPPORT_MACHO:
5913 create_ld_ident = create_name_macho;
5916 panic("unexpected OS support mode");
5919 /* create idents for all known runtime functions */
5920 for (size_t i = 0; i < lengthof(rts_data); ++i) {
5921 rts_idents[i] = new_id_from_str(rts_data[i].name);
5924 entitymap_init(&entitymap);
5927 static void init_ir_types(void)
5929 static int ir_types_initialized = 0;
5930 if (ir_types_initialized)
5932 ir_types_initialized = 1;
5934 ir_type_int = get_ir_type(type_int);
5935 ir_type_char = get_ir_type(type_char);
5936 ir_type_const_char = get_ir_type(type_const_char);
5937 ir_type_wchar_t = get_ir_type(type_wchar_t);
5938 ir_type_void = get_ir_type(type_void);
5940 be_params = be_get_backend_param();
5941 mode_float_arithmetic = be_params->mode_float_arithmetic;
5943 stack_param_align = be_params->stack_param_align;
5946 void exit_ast2firm(void)
5948 entitymap_destroy(&entitymap);
5949 obstack_free(&asm_obst, NULL);
5952 static void global_asm_to_firm(statement_t *s)
5954 for (; s != NULL; s = s->base.next) {
5955 assert(s->kind == STATEMENT_ASM);
5957 char const *const text = s->asms.asm_text.begin;
5958 size_t size = s->asms.asm_text.size;
5960 /* skip the last \0 */
5961 if (text[size - 1] == '\0')
5964 ident *const id = new_id_from_chars(text, size);
5969 void translation_unit_to_firm(translation_unit_t *unit)
5971 /* just to be sure */
5972 continue_label = NULL;
5974 current_switch_cond = NULL;
5975 current_translation_unit = unit;
5979 scope_to_firm(&unit->scope);
5980 global_asm_to_firm(unit->global_asm);
5982 current_ir_graph = NULL;
5983 current_translation_unit = NULL;