2 * This file is part of cparser.
3 * Copyright (C) 2007-2008 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;
83 extern bool have_const_functions;
85 static const entity_t *current_function_entity;
86 static ir_node *current_function_name;
87 static ir_node *current_funcsig;
88 static switch_statement_t *current_switch;
89 static ir_graph *current_function;
90 static translation_unit_t *current_translation_unit;
91 static trampoline_region *current_trampolines;
92 static ir_type *current_outer_frame;
93 static ir_type *current_outer_value_type;
94 static ir_node *current_static_link;
96 static entitymap_t entitymap;
98 static struct obstack asm_obst;
100 typedef enum declaration_kind_t {
101 DECLARATION_KIND_UNKNOWN,
102 DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
103 DECLARATION_KIND_GLOBAL_VARIABLE,
104 DECLARATION_KIND_LOCAL_VARIABLE,
105 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
106 DECLARATION_KIND_PARAMETER,
107 DECLARATION_KIND_PARAMETER_ENTITY,
108 DECLARATION_KIND_FUNCTION,
109 DECLARATION_KIND_COMPOUND_MEMBER,
110 DECLARATION_KIND_INNER_FUNCTION
111 } declaration_kind_t;
113 static ir_mode *get_ir_mode_storage(type_t *type);
115 * get arithmetic mode for a type. This is different from get_ir_mode_storage,
116 * int that it returns bigger modes for floating point on some platforms
117 * (x87 internally does arithemtic with 80bits)
119 static ir_mode *get_ir_mode_arithmetic(type_t *type);
121 static ir_type *get_ir_type_incomplete(type_t *type);
123 static void enqueue_inner_function(entity_t *entity)
125 if (inner_functions == NULL)
126 inner_functions = NEW_ARR_F(entity_t *, 0);
127 ARR_APP1(entity_t*, inner_functions, entity);
130 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
132 const entity_t *entity = get_irg_loc_description(irg, pos);
134 if (entity != NULL) {
135 warningf(&entity->base.source_position,
136 "%s '%#T' might be used uninitialized",
137 get_entity_kind_name(entity->kind),
138 entity->declaration.type, entity->base.symbol);
140 return new_r_Unknown(irg, mode);
143 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
145 const source_position_t *pos = (const source_position_t*) dbg;
148 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
152 const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
154 const source_position_t *pos = (const source_position_t*) dbg;
159 return pos->input_name;
162 static dbg_info *get_dbg_info(const source_position_t *pos)
164 return (dbg_info*) pos;
167 static ir_mode *atomic_modes[ATOMIC_TYPE_LAST+1];
169 static ir_mode *mode_int, *mode_uint;
171 static ir_node *_expression_to_firm(const expression_t *expression);
172 static ir_node *expression_to_firm(const expression_t *expression);
173 static void create_local_declaration(entity_t *entity);
175 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
177 unsigned flags = get_atomic_type_flags(kind);
178 unsigned size = get_atomic_type_size(kind);
179 if ( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
180 && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
183 unsigned bit_size = size * 8;
184 bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
185 unsigned modulo_shift;
186 ir_mode_arithmetic arithmetic;
188 if (flags & ATOMIC_TYPE_FLAG_INTEGER) {
189 assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
190 snprintf(name, sizeof(name), "%s%u", is_signed ? "I" : "U",
192 sort = irms_int_number;
193 arithmetic = irma_twos_complement;
194 modulo_shift = bit_size < machine_size ? machine_size : bit_size;
196 assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
197 snprintf(name, sizeof(name), "F%u", bit_size);
198 sort = irms_float_number;
199 arithmetic = irma_ieee754;
202 return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
210 * Initialises the atomic modes depending on the machine size.
212 static void init_atomic_modes(void)
214 for (int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
215 atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
217 mode_int = atomic_modes[ATOMIC_TYPE_INT];
218 mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
220 /* there's no real void type in firm */
221 atomic_modes[ATOMIC_TYPE_VOID] = atomic_modes[ATOMIC_TYPE_CHAR];
223 /* initialize pointer modes */
225 ir_mode_sort sort = irms_reference;
226 unsigned bit_size = machine_size;
228 ir_mode_arithmetic arithmetic = irma_twos_complement;
229 unsigned modulo_shift
230 = bit_size < machine_size ? machine_size : bit_size;
232 snprintf(name, sizeof(name), "p%u", machine_size);
233 ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
236 set_reference_mode_signed_eq(ptr_mode, atomic_modes[get_intptr_kind()]);
237 set_reference_mode_unsigned_eq(ptr_mode, atomic_modes[get_uintptr_kind()]);
239 /* Hmm, pointers should be machine size */
240 set_modeP_data(ptr_mode);
241 set_modeP_code(ptr_mode);
244 ir_mode *get_atomic_mode(atomic_type_kind_t kind)
246 assert(kind <= ATOMIC_TYPE_LAST);
247 return atomic_modes[kind];
250 static ir_node *get_vla_size(array_type_t *const type)
252 ir_node *size_node = type->size_node;
253 if (size_node == NULL) {
254 size_node = expression_to_firm(type->size_expression);
255 type->size_node = size_node;
261 * Return a node representing the size of a type.
263 static ir_node *get_type_size_node(type_t *type)
265 type = skip_typeref(type);
267 if (is_type_array(type) && type->array.is_vla) {
268 ir_node *size_node = get_vla_size(&type->array);
269 ir_node *elem_size = get_type_size_node(type->array.element_type);
270 ir_mode *mode = get_irn_mode(size_node);
271 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
275 ir_mode *mode = get_ir_mode_storage(type_size_t);
277 sym.type_p = get_ir_type(type);
278 return new_SymConst(mode, sym, symconst_type_size);
281 static unsigned count_parameters(const function_type_t *function_type)
285 function_parameter_t *parameter = function_type->parameters;
286 for ( ; parameter != NULL; parameter = parameter->next) {
294 * Creates a Firm type for an atomic type
296 static ir_type *create_atomic_type(atomic_type_kind_t akind)
298 ir_mode *mode = atomic_modes[akind];
299 ident *id = get_mode_ident(mode);
300 ir_type *irtype = new_type_primitive(id, mode);
301 il_alignment_t alignment = get_atomic_type_alignment(akind);
303 set_type_alignment_bytes(irtype, alignment);
309 * Creates a Firm type for a complex type
311 static ir_type *create_complex_type(const complex_type_t *type)
313 atomic_type_kind_t kind = type->akind;
314 ir_mode *mode = atomic_modes[kind];
315 ident *id = get_mode_ident(mode);
319 /* FIXME: finish the array */
324 * Creates a Firm type for an imaginary type
326 static ir_type *create_imaginary_type(imaginary_type_t *type)
328 atomic_type_kind_t kind = type->akind;
329 ir_mode *mode = atomic_modes[kind];
330 ident *id = get_mode_ident(mode);
331 ir_type *irtype = new_type_primitive(id, mode);
332 il_alignment_t alignment = get_type_alignment((type_t*) type);
334 set_type_alignment_bytes(irtype, alignment);
340 * return type of a parameter (and take transparent union gnu extension into
343 static type_t *get_parameter_type(type_t *orig_type)
345 type_t *type = skip_typeref(orig_type);
346 if (is_type_union(type)
347 && get_type_modifiers(orig_type) & DM_TRANSPARENT_UNION) {
348 compound_t *compound = type->compound.compound;
349 type = compound->members.entities->declaration.type;
355 static ir_type *create_method_type(const function_type_t *function_type, bool for_closure)
357 type_t *return_type = skip_typeref(function_type->return_type);
359 ident *id = id_unique("functiontype.%u");
360 int n_parameters = count_parameters(function_type) + (for_closure ? 1 : 0);
361 int n_results = return_type == type_void ? 0 : 1;
362 ir_type *irtype = new_type_method(id, n_parameters, n_results);
364 if (return_type != type_void) {
365 ir_type *restype = get_ir_type(return_type);
366 set_method_res_type(irtype, 0, restype);
369 function_parameter_t *parameter = function_type->parameters;
372 ir_type *p_irtype = get_ir_type(type_void_ptr);
373 set_method_param_type(irtype, n, p_irtype);
376 for ( ; parameter != NULL; parameter = parameter->next) {
377 type_t *type = get_parameter_type(parameter->type);
378 ir_type *p_irtype = get_ir_type(type);
379 set_method_param_type(irtype, n, p_irtype);
383 if (function_type->variadic || function_type->unspecified_parameters) {
384 set_method_variadicity(irtype, variadicity_variadic);
387 unsigned cc = get_method_calling_convention(irtype);
388 switch (function_type->calling_convention) {
389 case CC_DEFAULT: /* unspecified calling convention, equal to one of the other, typically cdecl */
392 set_method_calling_convention(irtype, SET_CDECL(cc));
396 if (function_type->variadic || function_type->unspecified_parameters)
399 /* only non-variadic function can use stdcall, else use cdecl */
400 set_method_calling_convention(irtype, SET_STDCALL(cc));
404 if (function_type->variadic || function_type->unspecified_parameters)
406 /* only non-variadic function can use fastcall, else use cdecl */
407 set_method_calling_convention(irtype, SET_FASTCALL(cc));
411 /* Hmm, leave default, not accepted by the parser yet. */
416 set_method_calling_convention(irtype, get_method_calling_convention(irtype) | cc_this_call);
421 static ir_type *create_pointer_type(pointer_type_t *type)
423 type_t *points_to = type->points_to;
424 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
425 ir_type *ir_type = new_type_pointer(id_unique("pointer.%u"),
426 ir_points_to, mode_P_data);
431 static ir_type *create_reference_type(reference_type_t *type)
433 type_t *refers_to = type->refers_to;
434 ir_type *ir_refers_to = get_ir_type_incomplete(refers_to);
435 ir_type *ir_type = new_type_pointer(id_unique("reference.%u"),
436 ir_refers_to, mode_P_data);
441 static ir_type *create_array_type(array_type_t *type)
443 type_t *element_type = type->element_type;
444 ir_type *ir_element_type = get_ir_type(element_type);
446 ident *id = id_unique("array.%u");
447 ir_type *ir_type = new_type_array(id, 1, ir_element_type);
449 const int align = get_type_alignment_bytes(ir_element_type);
450 set_type_alignment_bytes(ir_type, align);
452 if (type->size_constant) {
453 int n_elements = type->size;
455 set_array_bounds_int(ir_type, 0, 0, n_elements);
457 size_t elemsize = get_type_size_bytes(ir_element_type);
458 if (elemsize % align > 0) {
459 elemsize += align - (elemsize % align);
461 set_type_size_bytes(ir_type, n_elements * elemsize);
463 set_array_lower_bound_int(ir_type, 0, 0);
465 set_type_state(ir_type, layout_fixed);
471 * Return the signed integer type of size bits.
473 * @param size the size
475 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
478 static ir_mode *s_modes[64 + 1] = {NULL, };
482 if (size <= 0 || size > 64)
485 mode = s_modes[size];
489 snprintf(name, sizeof(name), "bf_I%u", size);
490 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
491 size <= 32 ? 32 : size );
492 s_modes[size] = mode;
496 snprintf(name, sizeof(name), "I%u", size);
497 ident *id = new_id_from_str(name);
498 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
499 res = new_d_type_primitive(id_mangle_u(get_type_ident(base_tp), id), mode, dbgi);
500 set_primitive_base_type(res, base_tp);
506 * Return the unsigned integer type of size bits.
508 * @param size the size
510 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
513 static ir_mode *u_modes[64 + 1] = {NULL, };
517 if (size <= 0 || size > 64)
520 mode = u_modes[size];
524 snprintf(name, sizeof(name), "bf_U%u", size);
525 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
526 size <= 32 ? 32 : size );
527 u_modes[size] = mode;
532 snprintf(name, sizeof(name), "U%u", size);
533 ident *id = new_id_from_str(name);
534 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
535 res = new_d_type_primitive(id_mangle_u(get_type_ident(base_tp), id), mode, dbgi);
536 set_primitive_base_type(res, base_tp);
541 static ir_type *create_bitfield_type(bitfield_type_t *const type)
543 type_t *base = skip_typeref(type->base_type);
544 assert(base->kind == TYPE_ATOMIC || base->kind == TYPE_ENUM);
545 ir_type *irbase = get_ir_type(base);
547 unsigned size = type->bit_size;
549 assert(!is_type_float(base));
550 if (is_type_signed(base)) {
551 return get_signed_int_type_for_bit_size(irbase, size);
553 return get_unsigned_int_type_for_bit_size(irbase, size);
557 #define INVALID_TYPE ((ir_type_ptr)-1)
560 COMPOUND_IS_STRUCT = false,
561 COMPOUND_IS_UNION = true
565 * Construct firm type from ast struct type.
567 static ir_type *create_compound_type(compound_type_t *type,
568 bool incomplete, bool is_union)
570 compound_t *compound = type->compound;
572 if (compound->irtype != NULL && (compound->irtype_complete || incomplete)) {
573 return compound->irtype;
576 symbol_t *symbol = compound->base.symbol;
578 if (symbol != NULL) {
579 id = new_id_from_str(symbol->string);
582 id = id_unique("__anonymous_union.%u");
584 id = id_unique("__anonymous_struct.%u");
587 dbg_info *dbgi = get_dbg_info(&compound->base.source_position);
591 irtype = new_d_type_union(id, dbgi);
593 irtype = new_d_type_struct(id, dbgi);
596 compound->irtype_complete = false;
597 compound->irtype = irtype;
603 layout_union_type(type);
605 layout_struct_type(type);
608 compound->irtype_complete = true;
610 entity_t *entry = compound->members.entities;
611 for ( ; entry != NULL; entry = entry->base.next) {
612 if (entry->kind != ENTITY_COMPOUND_MEMBER)
615 symbol_t *symbol = entry->base.symbol;
616 type_t *entry_type = entry->declaration.type;
618 if (symbol == NULL) {
619 /* anonymous bitfield member, skip */
620 if (entry_type->kind == TYPE_BITFIELD)
622 assert(entry_type->kind == TYPE_COMPOUND_STRUCT
623 || entry_type->kind == TYPE_COMPOUND_UNION);
624 ident = id_unique("anon.%u");
626 ident = new_id_from_str(symbol->string);
629 dbg_info *dbgi = get_dbg_info(&entry->base.source_position);
631 ir_type *entry_irtype = get_ir_type(entry_type);
632 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
634 set_entity_offset(entity, entry->compound_member.offset);
635 set_entity_offset_bits_remainder(entity,
636 entry->compound_member.bit_offset);
638 assert(entry->declaration.kind == DECLARATION_KIND_UNKNOWN);
639 entry->declaration.kind = DECLARATION_KIND_COMPOUND_MEMBER;
640 entry->compound_member.entity = entity;
643 set_type_alignment_bytes(irtype, compound->alignment);
644 set_type_size_bytes(irtype, compound->size);
645 set_type_state(irtype, layout_fixed);
650 static ir_type *create_enum_type(enum_type_t *const type)
652 type->base.firm_type = ir_type_int;
654 ir_mode *const mode = mode_int;
655 tarval *const one = get_mode_one(mode);
656 tarval * tv_next = get_tarval_null(mode);
658 bool constant_folding_old = constant_folding;
659 constant_folding = true;
661 enum_t *enume = type->enume;
662 entity_t *entry = enume->base.next;
663 for (; entry != NULL; entry = entry->base.next) {
664 if (entry->kind != ENTITY_ENUM_VALUE)
667 expression_t *const init = entry->enum_value.value;
669 ir_node *const cnst = expression_to_firm(init);
670 if (!is_Const(cnst)) {
671 panic("couldn't fold constant");
673 tv_next = get_Const_tarval(cnst);
675 entry->enum_value.tv = tv_next;
676 tv_next = tarval_add(tv_next, one);
679 constant_folding = constant_folding_old;
681 return create_atomic_type(type->akind);
684 static ir_type *get_ir_type_incomplete(type_t *type)
686 assert(type != NULL);
687 type = skip_typeref(type);
689 if (type->base.firm_type != NULL) {
690 assert(type->base.firm_type != INVALID_TYPE);
691 return type->base.firm_type;
694 switch (type->kind) {
695 case TYPE_COMPOUND_STRUCT:
696 return create_compound_type(&type->compound, true, COMPOUND_IS_STRUCT);
697 case TYPE_COMPOUND_UNION:
698 return create_compound_type(&type->compound, true, COMPOUND_IS_UNION);
700 return get_ir_type(type);
704 ir_type *get_ir_type(type_t *type)
706 assert(type != NULL);
708 type = skip_typeref(type);
710 if (type->base.firm_type != NULL) {
711 assert(type->base.firm_type != INVALID_TYPE);
712 return type->base.firm_type;
715 ir_type *firm_type = NULL;
716 switch (type->kind) {
718 /* Happens while constant folding, when there was an error */
719 return create_atomic_type(ATOMIC_TYPE_VOID);
722 firm_type = create_atomic_type(type->atomic.akind);
725 firm_type = create_complex_type(&type->complex);
728 firm_type = create_imaginary_type(&type->imaginary);
731 firm_type = create_method_type(&type->function, false);
734 firm_type = create_pointer_type(&type->pointer);
737 firm_type = create_reference_type(&type->reference);
740 firm_type = create_array_type(&type->array);
742 case TYPE_COMPOUND_STRUCT:
743 firm_type = create_compound_type(&type->compound, false, COMPOUND_IS_STRUCT);
745 case TYPE_COMPOUND_UNION:
746 firm_type = create_compound_type(&type->compound, false, COMPOUND_IS_UNION);
749 firm_type = create_enum_type(&type->enumt);
752 firm_type = get_ir_type(type->builtin.real_type);
755 firm_type = create_bitfield_type(&type->bitfield);
763 if (firm_type == NULL)
764 panic("unknown type found");
766 type->base.firm_type = firm_type;
770 static ir_mode *get_ir_mode_storage(type_t *type)
772 ir_type *irtype = get_ir_type(type);
774 /* firm doesn't report a mode for arrays somehow... */
775 if (is_Array_type(irtype)) {
779 ir_mode *mode = get_type_mode(irtype);
780 assert(mode != NULL);
784 static ir_mode *get_ir_mode_arithmetic(type_t *type)
786 ir_mode *mode = get_ir_mode_storage(type);
787 if (mode_is_float(mode) && mode_float_arithmetic != NULL) {
788 return mode_float_arithmetic;
794 /** Names of the runtime functions. */
795 static const struct {
796 int id; /**< the rts id */
797 int n_res; /**< number of return values */
798 const char *name; /**< the name of the rts function */
799 int n_params; /**< number of parameters */
800 unsigned flags; /**< language flags */
802 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
803 { rts_abort, 0, "abort", 0, _C89 },
804 { rts_alloca, 1, "alloca", 1, _ALL },
805 { rts_abs, 1, "abs", 1, _C89 },
806 { rts_labs, 1, "labs", 1, _C89 },
807 { rts_llabs, 1, "llabs", 1, _C99 },
808 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
810 { rts_fabs, 1, "fabs", 1, _C89 },
811 { rts_sqrt, 1, "sqrt", 1, _C89 },
812 { rts_cbrt, 1, "cbrt", 1, _C99 },
813 { rts_exp, 1, "exp", 1, _C89 },
814 { rts_exp2, 1, "exp2", 1, _C89 },
815 { rts_exp10, 1, "exp10", 1, _GNUC },
816 { rts_log, 1, "log", 1, _C89 },
817 { rts_log2, 1, "log2", 1, _C89 },
818 { rts_log10, 1, "log10", 1, _C89 },
819 { rts_pow, 1, "pow", 2, _C89 },
820 { rts_sin, 1, "sin", 1, _C89 },
821 { rts_cos, 1, "cos", 1, _C89 },
822 { rts_tan, 1, "tan", 1, _C89 },
823 { rts_asin, 1, "asin", 1, _C89 },
824 { rts_acos, 1, "acos", 1, _C89 },
825 { rts_atan, 1, "atan", 1, _C89 },
826 { rts_sinh, 1, "sinh", 1, _C89 },
827 { rts_cosh, 1, "cosh", 1, _C89 },
828 { rts_tanh, 1, "tanh", 1, _C89 },
830 { rts_fabsf, 1, "fabsf", 1, _C99 },
831 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
832 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
833 { rts_expf, 1, "expf", 1, _C99 },
834 { rts_exp2f, 1, "exp2f", 1, _C99 },
835 { rts_exp10f, 1, "exp10f", 1, _GNUC },
836 { rts_logf, 1, "logf", 1, _C99 },
837 { rts_log2f, 1, "log2f", 1, _C99 },
838 { rts_log10f, 1, "log10f", 1, _C99 },
839 { rts_powf, 1, "powf", 2, _C99 },
840 { rts_sinf, 1, "sinf", 1, _C99 },
841 { rts_cosf, 1, "cosf", 1, _C99 },
842 { rts_tanf, 1, "tanf", 1, _C99 },
843 { rts_asinf, 1, "asinf", 1, _C99 },
844 { rts_acosf, 1, "acosf", 1, _C99 },
845 { rts_atanf, 1, "atanf", 1, _C99 },
846 { rts_sinhf, 1, "sinhf", 1, _C99 },
847 { rts_coshf, 1, "coshf", 1, _C99 },
848 { rts_tanhf, 1, "tanhf", 1, _C99 },
850 { rts_fabsl, 1, "fabsl", 1, _C99 },
851 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
852 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
853 { rts_expl, 1, "expl", 1, _C99 },
854 { rts_exp2l, 1, "exp2l", 1, _C99 },
855 { rts_exp10l, 1, "exp10l", 1, _GNUC },
856 { rts_logl, 1, "logl", 1, _C99 },
857 { rts_log2l, 1, "log2l", 1, _C99 },
858 { rts_log10l, 1, "log10l", 1, _C99 },
859 { rts_powl, 1, "powl", 2, _C99 },
860 { rts_sinl, 1, "sinl", 1, _C99 },
861 { rts_cosl, 1, "cosl", 1, _C99 },
862 { rts_tanl, 1, "tanl", 1, _C99 },
863 { rts_asinl, 1, "asinl", 1, _C99 },
864 { rts_acosl, 1, "acosl", 1, _C99 },
865 { rts_atanl, 1, "atanl", 1, _C99 },
866 { rts_sinhl, 1, "sinhl", 1, _C99 },
867 { rts_coshl, 1, "coshl", 1, _C99 },
868 { rts_tanhl, 1, "tanhl", 1, _C99 },
870 { rts_strcmp, 1, "strcmp", 2, _C89 },
871 { rts_strncmp, 1, "strncmp", 3, _C89 },
872 { rts_strcpy, 1, "strcpy", 2, _C89 },
873 { rts_strlen, 1, "strlen", 1, _C89 },
874 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
875 { rts_mempcpy, 1, "mempcpy", 3, _GNUC },
876 { rts_memmove, 1, "memmove", 3, _C89 }, /* HMM, man say its C99 */
877 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
878 { rts_memcmp, 1, "memcmp", 3, _C89 }, /* HMM, man say its C99 */
881 static ident *rts_idents[lengthof(rts_data)];
883 static ident* (*create_ld_ident)(entity_t*) = create_name_linux_elf;
886 * Handle GNU attributes for entities
888 * @param ent the entity
889 * @param decl the routine declaration
891 static void handle_decl_modifiers(ir_entity *irentity, entity_t *entity)
893 assert(is_declaration(entity));
894 decl_modifiers_t modifiers = entity->declaration.modifiers;
895 if (modifiers & DM_PURE) {
896 /* TRUE if the declaration includes the GNU
897 __attribute__((pure)) specifier. */
898 set_entity_additional_property(irentity, mtp_property_pure);
900 if (modifiers & DM_CONST) {
901 set_entity_additional_property(irentity, mtp_property_const);
902 have_const_functions = true;
904 if (modifiers & DM_USED) {
905 /* TRUE if the declaration includes the GNU
906 __attribute__((used)) specifier. */
907 set_entity_stickyness(irentity, stickyness_sticky);
911 static bool is_main(entity_t *entity)
913 static symbol_t *sym_main = NULL;
914 if (sym_main == NULL) {
915 sym_main = symbol_table_insert("main");
918 if (entity->base.symbol != sym_main)
920 /* must be in outermost scope */
921 if (entity->base.parent_scope != ¤t_translation_unit->scope)
928 * Creates an entity representing a function.
930 * @param declaration the function declaration
931 * @param owner_type the owner type of this function, NULL
932 * for global functions
934 static ir_entity *get_function_entity(entity_t *entity, ir_type *owner_type)
936 assert(entity->kind == ENTITY_FUNCTION);
937 if (entity->function.irentity != NULL) {
938 return entity->function.irentity;
941 if (is_main(entity)) {
942 /* force main to C linkage */
943 type_t *type = entity->declaration.type;
944 assert(is_type_function(type));
945 if (type->function.linkage != LINKAGE_C) {
946 type_t *new_type = duplicate_type(type);
947 new_type->function.linkage = LINKAGE_C;
948 type = identify_new_type(new_type);
949 entity->declaration.type = type;
953 symbol_t *symbol = entity->base.symbol;
954 ident *id = new_id_from_str(symbol->string);
957 /* already an entity defined? */
958 ir_entity *irentity = entitymap_get(&entitymap, symbol);
959 bool const has_body = entity->function.statement != NULL;
960 if (irentity != NULL) {
961 if (get_entity_visibility(irentity) == visibility_external_allocated
963 set_entity_visibility(irentity, visibility_external_visible);
968 ir_type *ir_type_method;
969 if (entity->function.need_closure)
970 ir_type_method = create_method_type(&entity->declaration.type->function, true);
972 ir_type_method = get_ir_type(entity->declaration.type);
974 bool nested_function = false;
975 if (owner_type == NULL)
976 owner_type = get_glob_type();
978 nested_function = true;
980 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
981 irentity = new_d_entity(owner_type, id, ir_type_method, dbgi);
985 ld_id = id_unique("inner.%u");
987 ld_id = create_ld_ident(entity);
988 set_entity_ld_ident(irentity, ld_id);
990 handle_decl_modifiers(irentity, entity);
992 if (! nested_function) {
993 /* static inline => local
994 * extern inline => local
995 * inline without definition => local
996 * inline with definition => external_visible */
997 storage_class_tag_t const storage_class
998 = (storage_class_tag_t) entity->declaration.storage_class;
999 bool const is_inline = entity->function.is_inline;
1001 if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
1002 set_entity_visibility(irentity, visibility_external_visible);
1003 } else if (storage_class == STORAGE_CLASS_STATIC ||
1004 (is_inline && has_body)) {
1006 /* this entity was declared, but is defined nowhere */
1007 set_entity_peculiarity(irentity, peculiarity_description);
1009 set_entity_visibility(irentity, visibility_local);
1010 } else if (has_body) {
1011 set_entity_visibility(irentity, visibility_external_visible);
1013 set_entity_visibility(irentity, visibility_external_allocated);
1016 /* nested functions are always local */
1017 set_entity_visibility(irentity, visibility_local);
1019 set_entity_allocation(irentity, allocation_static);
1021 /* We should check for file scope here, but as long as we compile C only
1022 this is not needed. */
1023 if (! firm_opt.freestanding && !has_body) {
1024 /* check for a known runtime function */
1025 for (size_t i = 0; i < lengthof(rts_data); ++i) {
1026 if (id != rts_idents[i])
1029 /* ignore those rts functions not necessary needed for current mode */
1030 if ((c_mode & rts_data[i].flags) == 0)
1032 assert(rts_entities[rts_data[i].id] == NULL);
1033 rts_entities[rts_data[i].id] = irentity;
1037 entitymap_insert(&entitymap, symbol, irentity);
1040 entity->declaration.kind = DECLARATION_KIND_FUNCTION;
1041 entity->function.irentity = irentity;
1046 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1048 ir_mode *value_mode = get_irn_mode(value);
1050 if (value_mode == dest_mode || is_Bad(value))
1053 if (dest_mode == mode_b) {
1054 ir_node *zero = new_Const(get_mode_null(value_mode));
1055 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1056 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1060 return new_d_Conv(dbgi, value, dest_mode);
1064 * Creates a Const node representing a constant.
1066 static ir_node *const_to_firm(const const_expression_t *cnst)
1068 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1069 type_t *type = skip_typeref(cnst->base.type);
1070 ir_mode *mode = get_ir_mode_storage(type);
1075 if (mode_is_float(mode)) {
1076 tv = new_tarval_from_double(cnst->v.float_value, mode);
1078 if (mode_is_signed(mode)) {
1079 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1081 len = snprintf(buf, sizeof(buf), "%llu",
1082 (unsigned long long) cnst->v.int_value);
1084 tv = new_tarval_from_str(buf, len, mode);
1087 ir_node *res = new_d_Const(dbgi, tv);
1088 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
1089 return create_conv(dbgi, res, mode_arith);
1093 * Creates a Const node representing a character constant.
1095 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1097 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1098 ir_mode *mode = get_ir_mode_arithmetic(cnst->base.type);
1101 size_t const size = cnst->v.character.size;
1102 if (size == 1 && char_is_signed) {
1103 v = (signed char)cnst->v.character.begin[0];
1106 for (size_t i = 0; i < size; ++i) {
1107 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1111 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1112 tarval *tv = new_tarval_from_str(buf, len, mode);
1114 return new_d_Const(dbgi, tv);
1118 * Creates a Const node representing a wide character constant.
1120 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1122 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1123 ir_mode *mode = get_ir_mode_arithmetic(cnst->base.type);
1125 long long int v = cnst->v.wide_character.begin[0];
1128 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1129 tarval *tv = new_tarval_from_str(buf, len, mode);
1131 return new_d_Const(dbgi, tv);
1135 * Allocate an area of size bytes aligned at alignment
1138 static ir_entity *alloc_trampoline(ir_type *frame_type, int size, unsigned alignment) {
1139 static unsigned area_cnt = 0;
1142 snprintf(buf, sizeof(buf), "trampolin%u", area_cnt++);
1143 ident *name = new_id_from_str(buf);
1145 ir_type *tp = new_type_array(id_mangle_u(get_type_ident(frame_type), name), 1, ir_type_char);
1146 set_array_bounds_int(tp, 0, 0, size);
1147 set_type_alignment_bytes(tp, alignment);
1149 ir_entity *area = new_entity(frame_type, name, tp);
1151 /* mark this entity as compiler generated */
1152 set_entity_compiler_generated(area, 1);
1157 * Return a node representing a trampoline reagion
1158 * for a given entity.
1160 * @param dbgi debug info
1161 * @param entity the entity
1163 static ir_node *get_trampoline_region(dbg_info *dbgi, ir_entity *entity)
1165 ir_entity *region = NULL;
1168 if (current_trampolines != NULL) {
1169 for (i = ARR_LEN(current_trampolines) - 1; i >= 0; --i) {
1170 if (current_trampolines[i].function == entity) {
1171 region = current_trampolines[i].region;
1176 current_trampolines = NEW_ARR_F(trampoline_region, 0);
1178 ir_graph *irg = current_ir_graph;
1179 if (region == NULL) {
1180 /* create a new region */
1181 ir_type *frame_tp = get_irg_frame_type(irg);
1182 trampoline_region reg;
1183 reg.function = entity;
1185 reg.region = alloc_trampoline(frame_tp,
1186 be_params->trampoline_size,
1187 be_params->trampoline_align);
1188 ARR_APP1(trampoline_region, current_trampolines, reg);
1189 region = reg.region;
1191 return new_d_simpleSel(dbgi, get_irg_no_mem(irg), get_irg_frame(irg),
1197 * Creates a SymConst for a given entity.
1199 * @param dbgi debug info
1200 * @param mode the (reference) mode for the SymConst
1201 * @param entity the entity
1203 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1206 assert(entity != NULL);
1207 union symconst_symbol sym;
1208 sym.entity_p = entity;
1209 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1213 * Creates a SymConst for a given trampoline of an entity.
1215 * @param dbgi debug info
1216 * @param mode the (reference) mode for the SymConst
1217 * @param entity the entity
1219 static ir_node *create_trampoline(dbg_info *dbgi, ir_mode *mode,
1222 assert(entity != NULL);
1224 in[0] = get_trampoline_region(dbgi, entity);
1225 in[1] = create_symconst(dbgi, mode, entity);
1226 in[2] = get_irg_frame(current_ir_graph);
1228 ir_node *irn = new_d_Builtin(dbgi, get_store(), ir_bk_inner_trampoline, 3, in, get_unknown_type());
1229 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1230 return new_Proj(irn, mode, pn_Builtin_1_result);
1234 * Creates a SymConst node representing a string constant.
1236 * @param src_pos the source position of the string constant
1237 * @param id_prefix a prefix for the name of the generated string constant
1238 * @param value the value of the string constant
1240 static ir_node *string_to_firm(const source_position_t *const src_pos,
1241 const char *const id_prefix,
1242 const string_t *const value)
1244 ir_type *const global_type = get_glob_type();
1245 dbg_info *const dbgi = get_dbg_info(src_pos);
1246 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1247 ir_type_const_char, dbgi);
1249 ident *const id = id_unique(id_prefix);
1250 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1251 set_entity_ld_ident(entity, id);
1252 set_entity_variability(entity, variability_constant);
1253 set_entity_allocation(entity, allocation_static);
1255 ir_type *const elem_type = ir_type_const_char;
1256 ir_mode *const mode = get_type_mode(elem_type);
1258 const char* const string = value->begin;
1259 const size_t slen = value->size;
1261 set_array_lower_bound_int(type, 0, 0);
1262 set_array_upper_bound_int(type, 0, slen);
1263 set_type_size_bytes(type, slen);
1264 set_type_state(type, layout_fixed);
1266 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1267 for (size_t i = 0; i < slen; ++i) {
1268 tvs[i] = new_tarval_from_long(string[i], mode);
1271 set_array_entity_values(entity, tvs, slen);
1274 return create_symconst(dbgi, mode_P_data, entity);
1278 * Creates a SymConst node representing a string literal.
1280 * @param literal the string literal
1282 static ir_node *string_literal_to_firm(
1283 const string_literal_expression_t* literal)
1285 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1290 * Creates a SymConst node representing a wide string literal.
1292 * @param literal the wide string literal
1294 static ir_node *wide_string_literal_to_firm(
1295 const wide_string_literal_expression_t* const literal)
1297 ir_type *const global_type = get_glob_type();
1298 ir_type *const elem_type = ir_type_wchar_t;
1299 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1300 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1303 ident *const id = id_unique("Lstr.%u");
1304 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1305 set_entity_ld_ident(entity, id);
1306 set_entity_variability(entity, variability_constant);
1307 set_entity_allocation(entity, allocation_static);
1309 ir_mode *const mode = get_type_mode(elem_type);
1311 const wchar_rep_t *const string = literal->value.begin;
1312 const size_t slen = literal->value.size;
1314 set_array_lower_bound_int(type, 0, 0);
1315 set_array_upper_bound_int(type, 0, slen);
1316 set_type_size_bytes(type, slen);
1317 set_type_state(type, layout_fixed);
1319 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1320 for (size_t i = 0; i < slen; ++i) {
1321 tvs[i] = new_tarval_from_long(string[i], mode);
1324 set_array_entity_values(entity, tvs, slen);
1327 return create_symconst(dbgi, mode_P_data, entity);
1331 * Dereference an address.
1333 * @param dbgi debug info
1334 * @param type the type of the dereferenced result (the points_to type)
1335 * @param addr the address to dereference
1337 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1338 ir_node *const addr)
1340 ir_type *irtype = get_ir_type(type);
1341 if (is_compound_type(irtype)
1342 || is_Method_type(irtype)
1343 || is_Array_type(irtype)) {
1347 ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
1348 ? cons_volatile : cons_none;
1349 ir_mode *const mode = get_type_mode(irtype);
1350 ir_node *const memory = get_store();
1351 ir_node *const load = new_d_Load(dbgi, memory, addr, mode, flags);
1352 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1353 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1355 set_store(load_mem);
1357 ir_mode *const mode_arithmetic = get_ir_mode_arithmetic(type);
1358 return create_conv(dbgi, load_res, mode_arithmetic);
1362 * Creates a strict Conv (to the node's mode) if necessary.
1364 * @param dbgi debug info
1365 * @param node the node to strict conv
1367 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1369 ir_mode *mode = get_irn_mode(node);
1371 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1373 if (!mode_is_float(mode))
1376 /* check if there is already a Conv */
1377 if (is_Conv(node)) {
1378 /* convert it into a strict Conv */
1379 set_Conv_strict(node, 1);
1383 /* otherwise create a new one */
1384 return new_d_strictConv(dbgi, node, mode);
1388 * Returns the address of a global variable.
1390 * @param dbgi debug info
1391 * @param variable the variable
1393 static ir_node *get_global_var_address(dbg_info *const dbgi,
1394 const variable_t *const variable)
1396 ir_entity *const irentity = variable->v.entity;
1397 if (variable->thread_local) {
1398 ir_node *const no_mem = new_NoMem();
1399 ir_node *const tls = get_irg_tls(current_ir_graph);
1400 return new_d_simpleSel(dbgi, no_mem, tls, irentity);
1402 return create_symconst(dbgi, mode_P_data, irentity);
1407 * Returns the correct base address depending on whether it is a parameter or a
1408 * normal local variable.
1410 static ir_node *get_local_frame(ir_entity *const ent)
1412 ir_graph *const irg = current_ir_graph;
1413 const ir_type *const owner = get_entity_owner(ent);
1414 if (owner == current_outer_frame || owner == current_outer_value_type) {
1415 assert(current_static_link != NULL);
1416 return current_static_link;
1418 return get_irg_frame(irg);
1423 * Keep all memory edges of the given block.
1425 static void keep_all_memory(ir_node *block)
1427 ir_node *old = get_cur_block();
1429 set_cur_block(block);
1430 keep_alive(get_store());
1431 /* TODO: keep all memory edges from restricted pointers */
1435 static ir_node *reference_expression_enum_value_to_firm(
1436 const reference_expression_t *ref)
1438 entity_t *entity = ref->entity;
1439 type_t *type = skip_typeref(entity->enum_value.enum_type);
1440 /* make sure the type is constructed */
1441 (void) get_ir_type(type);
1443 return new_Const(entity->enum_value.tv);
1446 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1448 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1449 entity_t *entity = ref->entity;
1450 assert(is_declaration(entity));
1451 type_t *type = skip_typeref(entity->declaration.type);
1453 /* make sure the type is constructed */
1454 (void) get_ir_type(type);
1456 switch ((declaration_kind_t) entity->declaration.kind) {
1457 case DECLARATION_KIND_UNKNOWN:
1460 case DECLARATION_KIND_LOCAL_VARIABLE: {
1461 ir_mode *const mode = get_ir_mode_storage(type);
1462 ir_node *const value = get_value(entity->variable.v.value_number, mode);
1463 return create_conv(NULL, value, get_ir_mode_arithmetic(type));
1465 case DECLARATION_KIND_PARAMETER: {
1466 ir_mode *const mode = get_ir_mode_storage(type);
1467 ir_node *const value = get_value(entity->parameter.v.value_number,mode);
1468 return create_conv(NULL, value, get_ir_mode_arithmetic(type));
1470 case DECLARATION_KIND_FUNCTION: {
1471 ir_mode *const mode = get_ir_mode_storage(type);
1473 if (entity->function.btk != bk_none) {
1474 /* for gcc compatibility we have to produce (dummy) addresses for some
1476 if (warning.other) {
1477 warningf(&ref->base.source_position,
1478 "taking address of builtin '%Y'", ref->entity->base.symbol);
1481 /* simply create a NULL pointer */
1482 ir_mode *mode = get_ir_mode_arithmetic(type_void_ptr);
1483 ir_node *res = new_Const_long(mode, 0);
1487 return create_symconst(dbgi, mode, entity->function.irentity);
1489 case DECLARATION_KIND_INNER_FUNCTION: {
1490 ir_mode *const mode = get_ir_mode_storage(type);
1491 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1492 /* inner function not using the closure */
1493 return create_symconst(dbgi, mode, entity->function.irentity);
1495 /* need trampoline here */
1496 return create_trampoline(dbgi, mode, entity->function.irentity);
1499 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1500 const variable_t *variable = &entity->variable;
1501 ir_node *const addr = get_global_var_address(dbgi, variable);
1502 return deref_address(dbgi, variable->base.type, addr);
1505 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1506 ir_entity *irentity = entity->variable.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);
1511 case DECLARATION_KIND_PARAMETER_ENTITY: {
1512 ir_entity *irentity = entity->parameter.v.entity;
1513 ir_node *frame = get_local_frame(irentity);
1514 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1515 return deref_address(dbgi, entity->declaration.type, sel);
1518 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1519 return entity->variable.v.vla_base;
1521 case DECLARATION_KIND_COMPOUND_MEMBER:
1522 panic("not implemented reference type");
1525 panic("reference to declaration with unknown type found");
1528 static ir_node *reference_addr(const reference_expression_t *ref)
1530 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1531 entity_t *entity = ref->entity;
1532 assert(is_declaration(entity));
1534 switch((declaration_kind_t) entity->declaration.kind) {
1535 case DECLARATION_KIND_UNKNOWN:
1537 case DECLARATION_KIND_PARAMETER:
1538 case DECLARATION_KIND_LOCAL_VARIABLE:
1539 /* you can store to a local variable (so we don't panic but return NULL
1540 * as an indicator for no real address) */
1542 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1543 ir_node *const addr = get_global_var_address(dbgi, &entity->variable);
1546 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1547 ir_entity *irentity = entity->variable.v.entity;
1548 ir_node *frame = get_local_frame(irentity);
1549 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1553 case DECLARATION_KIND_PARAMETER_ENTITY: {
1554 ir_entity *irentity = entity->parameter.v.entity;
1555 ir_node *frame = get_local_frame(irentity);
1556 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1561 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1562 return entity->variable.v.vla_base;
1564 case DECLARATION_KIND_FUNCTION: {
1565 type_t *const type = skip_typeref(entity->declaration.type);
1566 ir_mode *const mode = get_ir_mode_storage(type);
1567 return create_symconst(dbgi, mode, entity->function.irentity);
1570 case DECLARATION_KIND_INNER_FUNCTION: {
1571 type_t *const type = skip_typeref(entity->declaration.type);
1572 ir_mode *const mode = get_ir_mode_storage(type);
1573 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1574 /* inner function not using the closure */
1575 return create_symconst(dbgi, mode, entity->function.irentity);
1577 /* need trampoline here */
1578 return create_trampoline(dbgi, mode, entity->function.irentity);
1582 case DECLARATION_KIND_COMPOUND_MEMBER:
1583 panic("not implemented reference type");
1586 panic("reference to declaration with unknown type found");
1590 * Generate an unary builtin.
1592 * @param kind the builtin kind to generate
1593 * @param op the operand
1594 * @param function_type the function type for the GNU builtin routine
1595 * @param db debug info
1597 static ir_node *gen_unary_builtin(ir_builtin_kind kind, expression_t *op, type_t *function_type, dbg_info *db)
1600 in[0] = expression_to_firm(op);
1602 ir_type *tp = get_ir_type(function_type);
1603 ir_type *res = get_method_res_type(tp, 0);
1604 ir_node *irn = new_d_Builtin(db, get_irg_no_mem(current_ir_graph), kind, 1, in, tp);
1605 set_irn_pinned(irn, op_pin_state_floats);
1606 return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result);
1610 * Generate a pinned unary builtin.
1612 * @param kind the builtin kind to generate
1613 * @param op the operand
1614 * @param function_type the function type for the GNU builtin routine
1615 * @param db debug info
1617 static ir_node *gen_unary_builtin_pinned(ir_builtin_kind kind, expression_t *op, type_t *function_type, dbg_info *db)
1620 in[0] = expression_to_firm(op);
1622 ir_type *tp = get_ir_type(function_type);
1623 ir_type *res = get_method_res_type(tp, 0);
1624 ir_node *mem = get_store();
1625 ir_node *irn = new_d_Builtin(db, mem, kind, 1, in, tp);
1626 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1627 return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result);
1632 * Generate an binary-void-return builtin.
1634 * @param kind the builtin kind to generate
1635 * @param op1 the first operand
1636 * @param op2 the second operand
1637 * @param function_type the function type for the GNU builtin routine
1638 * @param db debug info
1640 static ir_node *gen_binary_builtin_mem(ir_builtin_kind kind, expression_t *op1, expression_t *op2,
1641 type_t *function_type, dbg_info *db)
1644 in[0] = expression_to_firm(op1);
1645 in[1] = expression_to_firm(op2);
1647 ir_type *tp = get_ir_type(function_type);
1648 ir_node *mem = get_store();
1649 ir_node *irn = new_d_Builtin(db, mem, kind, 2, in, tp);
1650 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1655 * Transform calls to builtin functions.
1657 static ir_node *process_builtin_call(const call_expression_t *call)
1659 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1661 assert(call->function->kind == EXPR_REFERENCE);
1662 reference_expression_t *builtin = &call->function->reference;
1664 type_t *type = skip_typeref(builtin->base.type);
1665 assert(is_type_pointer(type));
1667 type_t *function_type = skip_typeref(type->pointer.points_to);
1669 switch (builtin->entity->function.btk) {
1670 case bk_gnu_builtin_alloca: {
1671 if (call->arguments == NULL || call->arguments->next != NULL) {
1672 panic("invalid number of parameters on __builtin_alloca");
1674 expression_t *argument = call->arguments->expression;
1675 ir_node *size = expression_to_firm(argument);
1677 ir_node *store = get_store();
1678 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1680 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1682 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1687 case bk_gnu_builtin_huge_val:
1688 case bk_gnu_builtin_inf:
1689 case bk_gnu_builtin_inff:
1690 case bk_gnu_builtin_infl: {
1691 type_t *type = function_type->function.return_type;
1692 ir_mode *mode = get_ir_mode_arithmetic(type);
1693 tarval *tv = get_mode_infinite(mode);
1694 ir_node *res = new_d_Const(dbgi, tv);
1697 case bk_gnu_builtin_nan:
1698 case bk_gnu_builtin_nanf:
1699 case bk_gnu_builtin_nanl: {
1700 /* Ignore string for now... */
1701 assert(is_type_function(function_type));
1702 type_t *type = function_type->function.return_type;
1703 ir_mode *mode = get_ir_mode_arithmetic(type);
1704 tarval *tv = get_mode_NAN(mode);
1705 ir_node *res = new_d_Const(dbgi, tv);
1708 case bk_gnu_builtin_expect: {
1709 expression_t *argument = call->arguments->expression;
1710 return _expression_to_firm(argument);
1712 case bk_gnu_builtin_va_end:
1713 /* evaluate the argument of va_end for its side effects */
1714 _expression_to_firm(call->arguments->expression);
1716 case bk_gnu_builtin_frame_address: {
1717 expression_t *const expression = call->arguments->expression;
1718 bool val = fold_constant_to_bool(expression);
1721 return get_irg_frame(current_ir_graph);
1723 /* get the argument */
1726 in[0] = expression_to_firm(expression);
1727 in[1] = get_irg_frame(current_ir_graph);
1728 ir_type *tp = get_ir_type(function_type);
1729 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), ir_bk_frame_addess, 2, in, tp);
1730 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1733 case bk_gnu_builtin_return_address: {
1735 expression_t *const expression = call->arguments->expression;
1738 in[0] = expression_to_firm(expression);
1739 in[1] = get_irg_frame(current_ir_graph);
1740 ir_type *tp = get_ir_type(function_type);
1741 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), ir_bk_return_address, 2, in, tp);
1742 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1744 case bk_gnu_builtin_ffs:
1745 return gen_unary_builtin(ir_bk_ffs, call->arguments->expression, function_type, dbgi);
1746 case bk_gnu_builtin_clz:
1747 return gen_unary_builtin(ir_bk_clz, call->arguments->expression, function_type, dbgi);
1748 case bk_gnu_builtin_ctz:
1749 return gen_unary_builtin(ir_bk_ctz, call->arguments->expression, function_type, dbgi);
1750 case bk_gnu_builtin_popcount:
1751 case bk_ms__popcount:
1752 return gen_unary_builtin(ir_bk_popcount, call->arguments->expression, function_type, dbgi);
1753 case bk_gnu_builtin_parity:
1754 return gen_unary_builtin(ir_bk_parity, call->arguments->expression, function_type, dbgi);
1755 case bk_gnu_builtin_prefetch: {
1756 call_argument_t *const args = call->arguments;
1757 expression_t *const addr = args->expression;
1760 in[0] = _expression_to_firm(addr);
1761 if (args->next != NULL) {
1762 expression_t *const rw = args->next->expression;
1764 in[1] = _expression_to_firm(rw);
1766 if (args->next->next != NULL) {
1767 expression_t *const locality = args->next->next->expression;
1769 in[2] = expression_to_firm(locality);
1771 in[2] = new_Const_long(mode_int, 3);
1774 in[1] = new_Const_long(mode_int, 0);
1775 in[2] = new_Const_long(mode_int, 3);
1777 ir_type *tp = get_ir_type(function_type);
1778 ir_node *irn = new_d_Builtin(dbgi, get_store(), ir_bk_prefetch, 3, in, tp);
1779 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1782 case bk_gnu_builtin_trap:
1785 ir_type *tp = get_ir_type(function_type);
1786 ir_node *irn = new_d_Builtin(dbgi, get_store(), ir_bk_trap, 0, NULL, tp);
1787 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1790 case bk_ms__debugbreak: {
1791 ir_type *tp = get_ir_type(function_type);
1792 ir_node *irn = new_d_Builtin(dbgi, get_store(), ir_bk_debugbreak, 0, NULL, tp);
1793 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1796 case bk_ms_ReturnAddress: {
1799 in[0] = new_Const_long(mode_int, 0);
1800 in[1] = get_irg_frame(current_ir_graph);
1801 ir_type *tp = get_ir_type(function_type);
1802 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), ir_bk_return_address, 2, in, tp);
1803 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1806 case bk_ms_rotl64: {
1807 ir_node *val = expression_to_firm(call->arguments->expression);
1808 ir_node *shf = expression_to_firm(call->arguments->next->expression);
1809 ir_mode *mode = get_irn_mode(val);
1810 return new_d_Rotl(dbgi, val, create_conv(dbgi, shf, mode_uint), mode);
1813 case bk_ms_rotr64: {
1814 ir_node *val = expression_to_firm(call->arguments->expression);
1815 ir_node *shf = expression_to_firm(call->arguments->next->expression);
1816 ir_mode *mode = get_irn_mode(val);
1817 ir_node *c = new_Const_long(mode_uint, get_mode_size_bits(mode));
1818 ir_node *sub = new_d_Sub(dbgi, c, create_conv(dbgi, shf, mode_uint), mode_uint);
1819 return new_d_Rotl(dbgi, val, sub, mode);
1821 case bk_ms_byteswap_ushort:
1822 case bk_ms_byteswap_ulong:
1823 case bk_ms_byteswap_uint64:
1824 return gen_unary_builtin(ir_bk_bswap, call->arguments->expression, function_type, dbgi);
1827 case bk_ms__indword:
1828 return gen_unary_builtin_pinned(ir_bk_inport, call->arguments->expression, function_type, dbgi);
1829 case bk_ms__outbyte:
1830 case bk_ms__outword:
1831 case bk_ms__outdword:
1832 return gen_binary_builtin_mem(ir_bk_outport, call->arguments->expression,
1833 call->arguments->next->expression, function_type, dbgi);
1835 panic("unsupported builtin found");
1840 * Transform a call expression.
1841 * Handles some special cases, like alloca() calls, which must be resolved
1842 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1843 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1846 static ir_node *call_expression_to_firm(const call_expression_t *const call)
1848 dbg_info *const dbgi = get_dbg_info(&call->base.source_position);
1849 assert(get_cur_block() != NULL);
1851 expression_t *function = call->function;
1852 if (function->kind == EXPR_REFERENCE) {
1853 const reference_expression_t *ref = &function->reference;
1854 entity_t *entity = ref->entity;
1856 if (entity->kind == ENTITY_FUNCTION) {
1857 if (entity->function.btk != bk_none) {
1858 return process_builtin_call(call);
1861 ir_entity *irentity = entity->function.irentity;
1862 if (irentity == NULL)
1863 irentity = get_function_entity(entity, NULL);
1865 if (irentity == rts_entities[rts_alloca]) {
1866 /* handle alloca() call */
1867 expression_t *argument = call->arguments->expression;
1868 ir_node *size = expression_to_firm(argument);
1869 ir_mode *mode = get_ir_mode_arithmetic(type_size_t);
1871 size = create_conv(dbgi, size, mode);
1873 ir_node *store = get_store();
1874 ir_node *alloca = new_d_Alloc(dbgi, store, size,
1875 firm_unknown_type, stack_alloc);
1876 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1878 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1884 ir_node *callee = expression_to_firm(function);
1886 type_t *type = skip_typeref(function->base.type);
1887 assert(is_type_pointer(type));
1888 pointer_type_t *pointer_type = &type->pointer;
1889 type_t *points_to = skip_typeref(pointer_type->points_to);
1890 assert(is_type_function(points_to));
1891 function_type_t *function_type = &points_to->function;
1893 int n_parameters = 0;
1894 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1895 ir_type *new_method_type = NULL;
1896 if (function_type->variadic || function_type->unspecified_parameters) {
1897 const call_argument_t *argument = call->arguments;
1898 for ( ; argument != NULL; argument = argument->next) {
1902 /* we need to construct a new method type matching the call
1904 int n_res = get_method_n_ress(ir_method_type);
1905 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1906 n_parameters, n_res, dbgi);
1907 set_method_calling_convention(new_method_type,
1908 get_method_calling_convention(ir_method_type));
1909 set_method_additional_properties(new_method_type,
1910 get_method_additional_properties(ir_method_type));
1911 set_method_variadicity(new_method_type,
1912 get_method_variadicity(ir_method_type));
1914 for (int i = 0; i < n_res; ++i) {
1915 set_method_res_type(new_method_type, i,
1916 get_method_res_type(ir_method_type, i));
1918 argument = call->arguments;
1919 for (int i = 0; i < n_parameters; ++i, argument = argument->next) {
1920 expression_t *expression = argument->expression;
1921 ir_type *irtype = get_ir_type(expression->base.type);
1922 set_method_param_type(new_method_type, i, irtype);
1924 ir_method_type = new_method_type;
1926 n_parameters = get_method_n_params(ir_method_type);
1929 ir_node *in[n_parameters];
1931 const call_argument_t *argument = call->arguments;
1932 for (int n = 0; n < n_parameters; ++n) {
1933 expression_t *expression = argument->expression;
1934 ir_node *arg_node = expression_to_firm(expression);
1936 type_t *type = skip_typeref(expression->base.type);
1937 if (!is_type_compound(type)) {
1938 ir_mode *mode = get_ir_mode_storage(expression->base.type);
1939 arg_node = create_conv(dbgi, arg_node, mode);
1940 arg_node = do_strict_conv(dbgi, arg_node);
1945 argument = argument->next;
1948 ir_node *store = get_store();
1949 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1951 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1954 type_t *return_type = skip_typeref(function_type->return_type);
1955 ir_node *result = NULL;
1957 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1958 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1960 if (is_type_scalar(return_type)) {
1961 ir_mode *mode = get_ir_mode_storage(return_type);
1962 result = new_d_Proj(dbgi, resproj, mode, 0);
1963 ir_mode *mode_arith = get_ir_mode_arithmetic(return_type);
1964 result = create_conv(NULL, result, mode_arith);
1966 ir_mode *mode = mode_P_data;
1967 result = new_d_Proj(dbgi, resproj, mode, 0);
1971 if (function->kind == EXPR_REFERENCE &&
1972 function->reference.entity->declaration.modifiers & DM_NORETURN) {
1973 /* A dead end: Keep the Call and the Block. Also place all further
1974 * nodes into a new and unreachable block. */
1976 keep_alive(get_cur_block());
1983 static void statement_to_firm(statement_t *statement);
1984 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1986 static ir_node *expression_to_addr(const expression_t *expression);
1987 static ir_node *create_condition_evaluation(const expression_t *expression,
1988 ir_node *true_block,
1989 ir_node *false_block);
1991 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1994 if (!is_type_compound(type)) {
1995 ir_mode *mode = get_ir_mode_storage(type);
1996 value = create_conv(dbgi, value, mode);
1997 value = do_strict_conv(dbgi, value);
2000 ir_node *memory = get_store();
2002 if (is_type_scalar(type)) {
2003 ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
2004 ? cons_volatile : cons_none;
2005 ir_node *store = new_d_Store(dbgi, memory, addr, value, flags);
2006 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
2007 set_store(store_mem);
2009 ir_type *irtype = get_ir_type(type);
2010 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
2011 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
2012 set_store(copyb_mem);
2016 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
2018 tarval *all_one = get_mode_all_one(mode);
2019 int mode_size = get_mode_size_bits(mode);
2021 assert(offset >= 0);
2023 assert(offset + size <= mode_size);
2024 if (size == mode_size) {
2028 long shiftr = get_mode_size_bits(mode) - size;
2029 long shiftl = offset;
2030 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
2031 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
2032 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
2033 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
2038 static ir_node *bitfield_store_to_firm(dbg_info *dbgi,
2039 ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile)
2041 ir_type *entity_type = get_entity_type(entity);
2042 ir_type *base_type = get_primitive_base_type(entity_type);
2043 assert(base_type != NULL);
2044 ir_mode *mode = get_type_mode(base_type);
2046 value = create_conv(dbgi, value, mode);
2048 /* kill upper bits of value and shift to right position */
2049 int bitoffset = get_entity_offset_bits_remainder(entity);
2050 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
2052 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
2053 ir_node *mask_node = new_d_Const(dbgi, mask);
2054 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
2055 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
2056 ir_node *shiftcount = new_d_Const(dbgi, shiftl);
2057 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
2059 /* load current value */
2060 ir_node *mem = get_store();
2061 ir_node *load = new_d_Load(dbgi, mem, addr, mode,
2062 set_volatile ? cons_volatile : cons_none);
2063 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
2064 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
2065 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
2066 tarval *inv_mask = tarval_not(shift_mask);
2067 ir_node *inv_mask_node = new_d_Const(dbgi, inv_mask);
2068 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
2070 /* construct new value and store */
2071 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
2072 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val,
2073 set_volatile ? cons_volatile : cons_none);
2074 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
2075 set_store(store_mem);
2077 return value_masked;
2080 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
2083 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2084 type_t *type = expression->base.type;
2085 ir_mode *mode = get_ir_mode_storage(type);
2086 ir_node *mem = get_store();
2087 ir_node *load = new_d_Load(dbgi, mem, addr, mode, cons_none);
2088 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
2089 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
2091 load_res = create_conv(dbgi, load_res, mode_int);
2093 set_store(load_mem);
2095 /* kill upper bits */
2096 assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER);
2097 ir_entity *entity = expression->compound_entry->compound_member.entity;
2098 int bitoffset = get_entity_offset_bits_remainder(entity);
2099 ir_type *entity_type = get_entity_type(entity);
2100 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
2101 long shift_bitsl = machine_size - bitoffset - bitsize;
2102 assert(shift_bitsl >= 0);
2103 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
2104 ir_node *countl = new_d_Const(dbgi, tvl);
2105 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
2107 long shift_bitsr = bitoffset + shift_bitsl;
2108 assert(shift_bitsr <= (long) machine_size);
2109 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
2110 ir_node *countr = new_d_Const(dbgi, tvr);
2112 if (mode_is_signed(mode)) {
2113 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
2115 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
2118 return create_conv(dbgi, shiftr, mode);
2121 /* make sure the selected compound type is constructed */
2122 static void construct_select_compound(const select_expression_t *expression)
2124 type_t *type = skip_typeref(expression->compound->base.type);
2125 if (is_type_pointer(type)) {
2126 type = type->pointer.points_to;
2128 (void) get_ir_type(type);
2131 static ir_node *set_value_for_expression_addr(const expression_t *expression,
2132 ir_node *value, ir_node *addr)
2134 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2135 type_t *type = skip_typeref(expression->base.type);
2137 if (!is_type_compound(type)) {
2138 ir_mode *mode = get_ir_mode_storage(type);
2139 value = create_conv(dbgi, value, mode);
2140 value = do_strict_conv(dbgi, value);
2143 if (expression->kind == EXPR_REFERENCE) {
2144 const reference_expression_t *ref = &expression->reference;
2146 entity_t *entity = ref->entity;
2147 assert(is_declaration(entity));
2148 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2149 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2150 set_value(entity->variable.v.value_number, value);
2152 } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2153 set_value(entity->parameter.v.value_number, value);
2159 addr = expression_to_addr(expression);
2160 assert(addr != NULL);
2162 if (expression->kind == EXPR_SELECT) {
2163 const select_expression_t *select = &expression->select;
2165 construct_select_compound(select);
2167 entity_t *entity = select->compound_entry;
2168 assert(entity->kind == ENTITY_COMPOUND_MEMBER);
2169 if (entity->declaration.type->kind == TYPE_BITFIELD) {
2170 ir_entity *irentity = entity->compound_member.entity;
2172 = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
2173 value = bitfield_store_to_firm(dbgi, irentity, addr, value,
2179 assign_value(dbgi, addr, type, value);
2183 static void set_value_for_expression(const expression_t *expression,
2186 set_value_for_expression_addr(expression, value, NULL);
2189 static ir_node *get_value_from_lvalue(const expression_t *expression,
2192 if (expression->kind == EXPR_REFERENCE) {
2193 const reference_expression_t *ref = &expression->reference;
2195 entity_t *entity = ref->entity;
2196 assert(entity->kind == ENTITY_VARIABLE
2197 || entity->kind == ENTITY_PARAMETER);
2198 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2200 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2201 value_number = entity->variable.v.value_number;
2202 assert(addr == NULL);
2203 type_t *type = skip_typeref(expression->base.type);
2204 ir_mode *mode = get_ir_mode_storage(type);
2205 ir_node *res = get_value(value_number, mode);
2206 return create_conv(NULL, res, get_ir_mode_arithmetic(type));
2207 } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2208 value_number = entity->parameter.v.value_number;
2209 assert(addr == NULL);
2210 type_t *type = skip_typeref(expression->base.type);
2211 ir_mode *mode = get_ir_mode_storage(type);
2212 ir_node *res = get_value(value_number, mode);
2213 return create_conv(NULL, res, get_ir_mode_arithmetic(type));
2217 assert(addr != NULL);
2218 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2221 if (expression->kind == EXPR_SELECT &&
2222 expression->select.compound_entry->declaration.type->kind == TYPE_BITFIELD){
2223 construct_select_compound(&expression->select);
2224 value = bitfield_extract_to_firm(&expression->select, addr);
2226 value = deref_address(dbgi, expression->base.type, addr);
2233 static ir_node *create_incdec(const unary_expression_t *expression)
2235 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2236 const expression_t *value_expr = expression->value;
2237 ir_node *addr = expression_to_addr(value_expr);
2238 ir_node *value = get_value_from_lvalue(value_expr, addr);
2240 type_t *type = skip_typeref(expression->base.type);
2241 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2244 if (is_type_pointer(type)) {
2245 pointer_type_t *pointer_type = &type->pointer;
2246 offset = get_type_size_node(pointer_type->points_to);
2248 assert(is_type_arithmetic(type));
2249 offset = new_Const(get_mode_one(mode));
2253 ir_node *store_value;
2254 switch(expression->base.kind) {
2255 case EXPR_UNARY_POSTFIX_INCREMENT:
2257 store_value = new_d_Add(dbgi, value, offset, mode);
2259 case EXPR_UNARY_POSTFIX_DECREMENT:
2261 store_value = new_d_Sub(dbgi, value, offset, mode);
2263 case EXPR_UNARY_PREFIX_INCREMENT:
2264 result = new_d_Add(dbgi, value, offset, mode);
2265 store_value = result;
2267 case EXPR_UNARY_PREFIX_DECREMENT:
2268 result = new_d_Sub(dbgi, value, offset, mode);
2269 store_value = result;
2272 panic("no incdec expr in create_incdec");
2275 set_value_for_expression_addr(value_expr, store_value, addr);
2280 static bool is_local_variable(expression_t *expression)
2282 if (expression->kind != EXPR_REFERENCE)
2284 reference_expression_t *ref_expr = &expression->reference;
2285 entity_t *entity = ref_expr->entity;
2286 if (entity->kind != ENTITY_VARIABLE)
2288 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2289 return entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE;
2292 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
2295 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
2296 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
2297 case EXPR_BINARY_NOTEQUAL:
2298 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
2299 case EXPR_BINARY_ISLESS:
2300 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
2301 case EXPR_BINARY_ISLESSEQUAL:
2302 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
2303 case EXPR_BINARY_ISGREATER:
2304 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
2305 case EXPR_BINARY_ISGREATEREQUAL:
2306 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
2307 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
2312 panic("trying to get pn_Cmp from non-comparison binexpr type");
2316 * Handle the assume optimizer hint: check if a Confirm
2317 * node can be created.
2319 * @param dbi debug info
2320 * @param expr the IL assume expression
2322 * we support here only some simple cases:
2327 static ir_node *handle_assume_compare(dbg_info *dbi,
2328 const binary_expression_t *expression)
2330 expression_t *op1 = expression->left;
2331 expression_t *op2 = expression->right;
2332 entity_t *var2, *var = NULL;
2333 ir_node *res = NULL;
2336 cmp_val = get_pnc(expression->base.kind, op1->base.type);
2338 if (is_local_variable(op1) && is_local_variable(op2)) {
2339 var = op1->reference.entity;
2340 var2 = op2->reference.entity;
2342 type_t *const type = skip_typeref(var->declaration.type);
2343 ir_mode *const mode = get_ir_mode_storage(type);
2345 ir_node *const irn1 = get_value(var->variable.v.value_number, mode);
2346 ir_node *const irn2 = get_value(var2->variable.v.value_number, mode);
2348 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
2349 set_value(var2->variable.v.value_number, res);
2351 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
2352 set_value(var->variable.v.value_number, res);
2358 if (is_local_variable(op1) && is_constant_expression(op2)) {
2359 var = op1->reference.entity;
2361 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2362 cmp_val = get_inversed_pnc(cmp_val);
2363 var = op2->reference.entity;
2368 type_t *const type = skip_typeref(var->declaration.type);
2369 ir_mode *const mode = get_ir_mode_storage(type);
2371 res = get_value(var->variable.v.value_number, mode);
2372 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2373 set_value(var->variable.v.value_number, res);
2379 * Handle the assume optimizer hint.
2381 * @param dbi debug info
2382 * @param expr the IL assume expression
2384 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression)
2386 switch(expression->kind) {
2387 case EXPR_BINARY_EQUAL:
2388 case EXPR_BINARY_NOTEQUAL:
2389 case EXPR_BINARY_LESS:
2390 case EXPR_BINARY_LESSEQUAL:
2391 case EXPR_BINARY_GREATER:
2392 case EXPR_BINARY_GREATEREQUAL:
2393 return handle_assume_compare(dbi, &expression->binary);
2399 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2401 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2402 type_t *type = skip_typeref(expression->base.type);
2404 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2405 return expression_to_addr(expression->value);
2407 const expression_t *value = expression->value;
2409 switch(expression->base.kind) {
2410 case EXPR_UNARY_NEGATE: {
2411 ir_node *value_node = expression_to_firm(value);
2412 ir_mode *mode = get_ir_mode_arithmetic(type);
2413 return new_d_Minus(dbgi, value_node, mode);
2415 case EXPR_UNARY_PLUS:
2416 return expression_to_firm(value);
2417 case EXPR_UNARY_BITWISE_NEGATE: {
2418 ir_node *value_node = expression_to_firm(value);
2419 ir_mode *mode = get_ir_mode_arithmetic(type);
2420 return new_d_Not(dbgi, value_node, mode);
2422 case EXPR_UNARY_NOT: {
2423 ir_node *value_node = _expression_to_firm(value);
2424 value_node = create_conv(dbgi, value_node, mode_b);
2425 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2428 case EXPR_UNARY_DEREFERENCE: {
2429 ir_node *value_node = expression_to_firm(value);
2430 type_t *value_type = skip_typeref(value->base.type);
2431 assert(is_type_pointer(value_type));
2433 /* check for __based */
2434 const variable_t *const base_var = value_type->pointer.base_variable;
2435 if (base_var != NULL) {
2436 ir_node *const addr = get_global_var_address(dbgi, base_var);
2437 ir_node *const base = deref_address(dbgi, base_var->base.type, addr);
2438 value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(value_type));
2440 type_t *points_to = value_type->pointer.points_to;
2441 return deref_address(dbgi, points_to, value_node);
2443 case EXPR_UNARY_POSTFIX_INCREMENT:
2444 case EXPR_UNARY_POSTFIX_DECREMENT:
2445 case EXPR_UNARY_PREFIX_INCREMENT:
2446 case EXPR_UNARY_PREFIX_DECREMENT:
2447 return create_incdec(expression);
2448 case EXPR_UNARY_CAST: {
2449 ir_node *value_node = expression_to_firm(value);
2450 if (is_type_scalar(type)) {
2451 ir_mode *mode = get_ir_mode_storage(type);
2452 type_t *from_type = skip_typeref(value->base.type);
2453 /* check for conversion from / to __based types */
2454 if (is_type_pointer(type) && is_type_pointer(from_type)) {
2455 const variable_t *from_var = from_type->pointer.base_variable;
2456 const variable_t *to_var = type->pointer.base_variable;
2457 if (from_var != to_var) {
2458 if (from_var != NULL) {
2459 ir_node *const addr = get_global_var_address(dbgi, from_var);
2460 ir_node *const base = deref_address(dbgi, from_var->base.type, addr);
2461 value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(from_type));
2463 if (to_var != NULL) {
2464 ir_node *const addr = get_global_var_address(dbgi, to_var);
2465 ir_node *const base = deref_address(dbgi, to_var->base.type, addr);
2466 value_node = new_d_Sub(dbgi, value_node, base, mode);
2470 ir_node *node = create_conv(dbgi, value_node, mode);
2471 node = do_strict_conv(dbgi, node);
2472 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
2473 node = create_conv(dbgi, node, mode_arith);
2476 /* make sure firm type is constructed */
2477 (void) get_ir_type(type);
2481 case EXPR_UNARY_CAST_IMPLICIT: {
2482 ir_node *value_node = expression_to_firm(value);
2483 if (is_type_scalar(type)) {
2484 ir_mode *mode = get_ir_mode_storage(type);
2485 ir_node *res = create_conv(dbgi, value_node, mode);
2486 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
2487 res = create_conv(dbgi, res, mode_arith);
2493 case EXPR_UNARY_ASSUME:
2494 if (firm_opt.confirm)
2495 return handle_assume(dbgi, value);
2502 panic("invalid UNEXPR type found");
2506 * produces a 0/1 depending of the value of a mode_b node
2508 static ir_node *produce_condition_result(const expression_t *expression,
2509 ir_mode *mode, dbg_info *dbgi)
2511 ir_node *cur_block = get_cur_block();
2513 ir_node *one_block = new_immBlock();
2514 set_cur_block(one_block);
2515 ir_node *one = new_Const(get_mode_one(mode));
2516 ir_node *jmp_one = new_d_Jmp(dbgi);
2518 ir_node *zero_block = new_immBlock();
2519 set_cur_block(zero_block);
2520 ir_node *zero = new_Const(get_mode_null(mode));
2521 ir_node *jmp_zero = new_d_Jmp(dbgi);
2523 set_cur_block(cur_block);
2524 create_condition_evaluation(expression, one_block, zero_block);
2525 mature_immBlock(one_block);
2526 mature_immBlock(zero_block);
2528 ir_node *in_cf[2] = { jmp_one, jmp_zero };
2529 new_Block(2, in_cf);
2531 ir_node *in[2] = { one, zero };
2532 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2537 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2538 ir_node *value, type_t *type)
2540 ir_mode *const mode = get_ir_mode_arithmetic(type_ptrdiff_t);
2541 assert(is_type_pointer(type));
2542 pointer_type_t *const pointer_type = &type->pointer;
2543 type_t *const points_to = skip_typeref(pointer_type->points_to);
2544 ir_node * elem_size = get_type_size_node(points_to);
2545 elem_size = create_conv(dbgi, elem_size, mode);
2546 value = create_conv(dbgi, value, mode);
2547 ir_node *const mul = new_d_Mul(dbgi, value, elem_size, mode);
2551 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2552 ir_node *left, ir_node *right)
2555 type_t *type_left = skip_typeref(expression->left->base.type);
2556 type_t *type_right = skip_typeref(expression->right->base.type);
2558 expression_kind_t kind = expression->base.kind;
2561 case EXPR_BINARY_SHIFTLEFT:
2562 case EXPR_BINARY_SHIFTRIGHT:
2563 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2564 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2565 mode = get_irn_mode(left);
2566 right = create_conv(dbgi, right, mode_uint);
2569 case EXPR_BINARY_SUB:
2570 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2571 const pointer_type_t *const ptr_type = &type_left->pointer;
2573 mode = get_ir_mode_arithmetic(expression->base.type);
2574 ir_node *const elem_size = get_type_size_node(ptr_type->points_to);
2575 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2576 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2577 ir_node *const no_mem = new_NoMem();
2578 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2579 mode, op_pin_state_floats);
2580 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2583 case EXPR_BINARY_SUB_ASSIGN:
2584 if (is_type_pointer(type_left)) {
2585 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2586 mode = get_ir_mode_arithmetic(type_left);
2591 case EXPR_BINARY_ADD:
2592 case EXPR_BINARY_ADD_ASSIGN:
2593 if (is_type_pointer(type_left)) {
2594 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2595 mode = get_ir_mode_arithmetic(type_left);
2597 } else if (is_type_pointer(type_right)) {
2598 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2599 mode = get_ir_mode_arithmetic(type_right);
2606 mode = get_ir_mode_arithmetic(type_right);
2607 left = create_conv(dbgi, left, mode);
2612 case EXPR_BINARY_ADD_ASSIGN:
2613 case EXPR_BINARY_ADD:
2614 return new_d_Add(dbgi, left, right, mode);
2615 case EXPR_BINARY_SUB_ASSIGN:
2616 case EXPR_BINARY_SUB:
2617 return new_d_Sub(dbgi, left, right, mode);
2618 case EXPR_BINARY_MUL_ASSIGN:
2619 case EXPR_BINARY_MUL:
2620 return new_d_Mul(dbgi, left, right, mode);
2621 case EXPR_BINARY_BITWISE_AND:
2622 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2623 return new_d_And(dbgi, left, right, mode);
2624 case EXPR_BINARY_BITWISE_OR:
2625 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2626 return new_d_Or(dbgi, left, right, mode);
2627 case EXPR_BINARY_BITWISE_XOR:
2628 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2629 return new_d_Eor(dbgi, left, right, mode);
2630 case EXPR_BINARY_SHIFTLEFT:
2631 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2632 return new_d_Shl(dbgi, left, right, mode);
2633 case EXPR_BINARY_SHIFTRIGHT:
2634 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2635 if (mode_is_signed(mode)) {
2636 return new_d_Shrs(dbgi, left, right, mode);
2638 return new_d_Shr(dbgi, left, right, mode);
2640 case EXPR_BINARY_DIV:
2641 case EXPR_BINARY_DIV_ASSIGN: {
2642 ir_node *pin = new_Pin(new_NoMem());
2645 if (mode_is_float(mode)) {
2646 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2647 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2649 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2650 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2654 case EXPR_BINARY_MOD:
2655 case EXPR_BINARY_MOD_ASSIGN: {
2656 ir_node *pin = new_Pin(new_NoMem());
2657 assert(!mode_is_float(mode));
2658 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2659 op_pin_state_floats);
2660 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2664 panic("unexpected expression kind");
2668 static ir_node *create_lazy_op(const binary_expression_t *expression)
2670 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2671 type_t *type = skip_typeref(expression->base.type);
2672 ir_mode *mode = get_ir_mode_arithmetic(type);
2674 if (is_constant_expression(expression->left)) {
2675 bool val = fold_constant_to_bool(expression->left);
2676 expression_kind_t ekind = expression->base.kind;
2677 assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
2678 if (ekind == EXPR_BINARY_LOGICAL_AND) {
2680 return new_Const(get_mode_null(mode));
2684 return new_Const(get_mode_one(mode));
2688 if (is_constant_expression(expression->right)) {
2689 bool valr = fold_constant_to_bool(expression->right);
2691 new_Const(get_mode_one(mode)) :
2692 new_Const(get_mode_null(mode));
2695 return produce_condition_result(expression->right, mode, dbgi);
2698 return produce_condition_result((const expression_t*) expression, mode,
2702 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2703 ir_node *right, ir_mode *mode);
2705 static ir_node *create_assign_binop(const binary_expression_t *expression)
2707 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2708 const expression_t *left_expr = expression->left;
2709 type_t *type = skip_typeref(left_expr->base.type);
2710 ir_mode *left_mode = get_ir_mode_storage(type);
2711 ir_node *right = expression_to_firm(expression->right);
2712 ir_node *left_addr = expression_to_addr(left_expr);
2713 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2714 ir_node *result = create_op(dbgi, expression, left, right);
2716 result = create_conv(dbgi, result, left_mode);
2717 result = do_strict_conv(dbgi, result);
2719 result = set_value_for_expression_addr(left_expr, result, left_addr);
2721 if (!is_type_compound(type)) {
2722 ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
2723 result = create_conv(dbgi, result, mode_arithmetic);
2728 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2730 expression_kind_t kind = expression->base.kind;
2733 case EXPR_BINARY_EQUAL:
2734 case EXPR_BINARY_NOTEQUAL:
2735 case EXPR_BINARY_LESS:
2736 case EXPR_BINARY_LESSEQUAL:
2737 case EXPR_BINARY_GREATER:
2738 case EXPR_BINARY_GREATEREQUAL:
2739 case EXPR_BINARY_ISGREATER:
2740 case EXPR_BINARY_ISGREATEREQUAL:
2741 case EXPR_BINARY_ISLESS:
2742 case EXPR_BINARY_ISLESSEQUAL:
2743 case EXPR_BINARY_ISLESSGREATER:
2744 case EXPR_BINARY_ISUNORDERED: {
2745 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2746 ir_node *left = expression_to_firm(expression->left);
2747 ir_node *right = expression_to_firm(expression->right);
2748 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2749 long pnc = get_pnc(kind, expression->left->base.type);
2750 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2753 case EXPR_BINARY_ASSIGN: {
2754 ir_node *addr = expression_to_addr(expression->left);
2755 ir_node *right = expression_to_firm(expression->right);
2757 = set_value_for_expression_addr(expression->left, right, addr);
2759 type_t *type = skip_typeref(expression->base.type);
2760 if (!is_type_compound(type)) {
2761 ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
2762 res = create_conv(NULL, res, mode_arithmetic);
2766 case EXPR_BINARY_ADD:
2767 case EXPR_BINARY_SUB:
2768 case EXPR_BINARY_MUL:
2769 case EXPR_BINARY_DIV:
2770 case EXPR_BINARY_MOD:
2771 case EXPR_BINARY_BITWISE_AND:
2772 case EXPR_BINARY_BITWISE_OR:
2773 case EXPR_BINARY_BITWISE_XOR:
2774 case EXPR_BINARY_SHIFTLEFT:
2775 case EXPR_BINARY_SHIFTRIGHT:
2777 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2778 ir_node *left = expression_to_firm(expression->left);
2779 ir_node *right = expression_to_firm(expression->right);
2780 return create_op(dbgi, expression, left, right);
2782 case EXPR_BINARY_LOGICAL_AND:
2783 case EXPR_BINARY_LOGICAL_OR:
2784 return create_lazy_op(expression);
2785 case EXPR_BINARY_COMMA:
2786 /* create side effects of left side */
2787 (void) expression_to_firm(expression->left);
2788 return _expression_to_firm(expression->right);
2790 case EXPR_BINARY_ADD_ASSIGN:
2791 case EXPR_BINARY_SUB_ASSIGN:
2792 case EXPR_BINARY_MUL_ASSIGN:
2793 case EXPR_BINARY_MOD_ASSIGN:
2794 case EXPR_BINARY_DIV_ASSIGN:
2795 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2796 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2797 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2798 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2799 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2800 return create_assign_binop(expression);
2802 panic("TODO binexpr type");
2806 static ir_node *array_access_addr(const array_access_expression_t *expression)
2808 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2809 ir_node *base_addr = expression_to_firm(expression->array_ref);
2810 ir_node *offset = expression_to_firm(expression->index);
2811 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2812 ir_node *real_offset = adjust_for_pointer_arithmetic(dbgi, offset, ref_type);
2813 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2818 static ir_node *array_access_to_firm(
2819 const array_access_expression_t *expression)
2821 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2822 ir_node *addr = array_access_addr(expression);
2823 type_t *type = revert_automatic_type_conversion(
2824 (const expression_t*) expression);
2825 type = skip_typeref(type);
2827 return deref_address(dbgi, type, addr);
2830 static long get_offsetof_offset(const offsetof_expression_t *expression)
2832 type_t *orig_type = expression->type;
2835 designator_t *designator = expression->designator;
2836 for ( ; designator != NULL; designator = designator->next) {
2837 type_t *type = skip_typeref(orig_type);
2838 /* be sure the type is constructed */
2839 (void) get_ir_type(type);
2841 if (designator->symbol != NULL) {
2842 assert(is_type_compound(type));
2843 symbol_t *symbol = designator->symbol;
2845 compound_t *compound = type->compound.compound;
2846 entity_t *iter = compound->members.entities;
2847 for ( ; iter != NULL; iter = iter->base.next) {
2848 if (iter->base.symbol == symbol) {
2852 assert(iter != NULL);
2854 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
2855 assert(iter->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2856 offset += get_entity_offset(iter->compound_member.entity);
2858 orig_type = iter->declaration.type;
2860 expression_t *array_index = designator->array_index;
2861 assert(designator->array_index != NULL);
2862 assert(is_type_array(type));
2864 long index = fold_constant_to_int(array_index);
2865 ir_type *arr_type = get_ir_type(type);
2866 ir_type *elem_type = get_array_element_type(arr_type);
2867 long elem_size = get_type_size_bytes(elem_type);
2869 offset += index * elem_size;
2871 orig_type = type->array.element_type;
2878 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2880 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2881 long offset = get_offsetof_offset(expression);
2882 tarval *tv = new_tarval_from_long(offset, mode);
2883 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2885 return new_d_Const(dbgi, tv);
2888 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2889 ir_entity *entity, type_t *type);
2891 static ir_node *compound_literal_to_firm(
2892 const compound_literal_expression_t *expression)
2894 type_t *type = expression->type;
2896 /* create an entity on the stack */
2897 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2899 ident *const id = id_unique("CompLit.%u");
2900 ir_type *const irtype = get_ir_type(type);
2901 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2902 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2903 set_entity_ld_ident(entity, id);
2905 set_entity_variability(entity, variability_uninitialized);
2907 /* create initialisation code */
2908 initializer_t *initializer = expression->initializer;
2909 create_local_initializer(initializer, dbgi, entity, type);
2911 /* create a sel for the compound literal address */
2912 ir_node *frame = get_irg_frame(current_ir_graph);
2913 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2918 * Transform a sizeof expression into Firm code.
2920 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2922 type_t *type = expression->type;
2924 type = expression->tp_expression->base.type;
2925 assert(type != NULL);
2928 type = skip_typeref(type);
2929 /* ยง6.5.3.4:2 if the type is a VLA, evaluate the expression. */
2930 if (is_type_array(type) && type->array.is_vla
2931 && expression->tp_expression != NULL) {
2932 expression_to_firm(expression->tp_expression);
2935 return get_type_size_node(type);
2938 static entity_t *get_expression_entity(const expression_t *expression)
2940 if (expression->kind != EXPR_REFERENCE)
2943 return expression->reference.entity;
2946 static unsigned get_cparser_entity_alignment(const entity_t *entity)
2948 switch(entity->kind) {
2949 DECLARATION_KIND_CASES
2950 return entity->declaration.alignment;
2953 return entity->compound.alignment;
2954 case ENTITY_TYPEDEF:
2955 return entity->typedefe.alignment;
2963 * Transform an alignof expression into Firm code.
2965 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2967 unsigned alignment = 0;
2969 const expression_t *tp_expression = expression->tp_expression;
2970 if (tp_expression != NULL) {
2971 entity_t *entity = get_expression_entity(tp_expression);
2972 if (entity != NULL) {
2973 alignment = get_cparser_entity_alignment(entity);
2977 if (alignment == 0) {
2978 type_t *type = expression->type;
2979 alignment = get_type_alignment(type);
2982 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2983 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2984 tarval *tv = new_tarval_from_long(alignment, mode);
2985 return new_d_Const(dbgi, tv);
2988 static void init_ir_types(void);
2990 static tarval *fold_constant_to_tarval(const expression_t *expression)
2992 assert(is_type_valid(skip_typeref(expression->base.type)));
2994 bool constant_folding_old = constant_folding;
2995 constant_folding = true;
2999 assert(is_constant_expression(expression));
3001 ir_graph *old_current_ir_graph = current_ir_graph;
3002 current_ir_graph = get_const_code_irg();
3004 ir_node *cnst = expression_to_firm(expression);
3005 current_ir_graph = old_current_ir_graph;
3007 if (!is_Const(cnst)) {
3008 panic("couldn't fold constant");
3011 constant_folding = constant_folding_old;
3013 tarval *tv = get_Const_tarval(cnst);
3017 long fold_constant_to_int(const expression_t *expression)
3019 if (expression->kind == EXPR_INVALID)
3022 tarval *tv = fold_constant_to_tarval(expression);
3023 if (!tarval_is_long(tv)) {
3024 panic("result of constant folding is not integer");
3027 return get_tarval_long(tv);
3030 bool fold_constant_to_bool(const expression_t *expression)
3032 if (expression->kind == EXPR_INVALID)
3034 tarval *tv = fold_constant_to_tarval(expression);
3035 return !tarval_is_null(tv);
3038 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
3040 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
3042 /* first try to fold a constant condition */
3043 if (is_constant_expression(expression->condition)) {
3044 bool val = fold_constant_to_bool(expression->condition);
3046 expression_t *true_expression = expression->true_expression;
3047 if (true_expression == NULL)
3048 true_expression = expression->condition;
3049 return expression_to_firm(true_expression);
3051 return expression_to_firm(expression->false_expression);
3055 ir_node *cur_block = get_cur_block();
3057 /* create the true block */
3058 ir_node *true_block = new_immBlock();
3059 set_cur_block(true_block);
3061 ir_node *true_val = expression->true_expression != NULL ?
3062 expression_to_firm(expression->true_expression) : NULL;
3063 ir_node *true_jmp = new_Jmp();
3065 /* create the false block */
3066 ir_node *false_block = new_immBlock();
3067 set_cur_block(false_block);
3069 ir_node *false_val = expression_to_firm(expression->false_expression);
3070 ir_node *false_jmp = new_Jmp();
3072 /* create the condition evaluation */
3073 set_cur_block(cur_block);
3074 ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
3075 if (expression->true_expression == NULL) {
3076 if (cond_expr != NULL && get_irn_mode(cond_expr) != mode_b) {
3077 true_val = cond_expr;
3079 /* Condition ended with a short circuit (&&, ||, !) operation or a
3080 * comparison. Generate a "1" as value for the true branch. */
3081 true_val = new_Const(get_mode_one(mode_Is));
3084 mature_immBlock(true_block);
3085 mature_immBlock(false_block);
3087 /* create the common block */
3088 ir_node *in_cf[2] = { true_jmp, false_jmp };
3089 new_Block(2, in_cf);
3091 /* TODO improve static semantics, so either both or no values are NULL */
3092 if (true_val == NULL || false_val == NULL)
3095 ir_node *in[2] = { true_val, false_val };
3096 ir_mode *mode = get_irn_mode(true_val);
3097 assert(get_irn_mode(false_val) == mode);
3098 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
3104 * Returns an IR-node representing the address of a field.
3106 static ir_node *select_addr(const select_expression_t *expression)
3108 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3110 construct_select_compound(expression);
3112 ir_node *compound_addr = expression_to_firm(expression->compound);
3114 entity_t *entry = expression->compound_entry;
3115 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3116 assert(entry->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
3118 if (constant_folding) {
3119 ir_mode *mode = get_irn_mode(compound_addr);
3120 /* FIXME: here, we need an integer mode with the same number of bits as mode */
3121 ir_node *ofs = new_Const_long(mode_uint, entry->compound_member.offset);
3122 return new_d_Add(dbgi, compound_addr, ofs, mode);
3124 ir_entity *irentity = entry->compound_member.entity;
3125 assert(irentity != NULL);
3126 return new_d_simpleSel(dbgi, new_NoMem(), compound_addr, irentity);
3130 static ir_node *select_to_firm(const select_expression_t *expression)
3132 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3133 ir_node *addr = select_addr(expression);
3134 type_t *type = revert_automatic_type_conversion(
3135 (const expression_t*) expression);
3136 type = skip_typeref(type);
3138 entity_t *entry = expression->compound_entry;
3139 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3140 type_t *entry_type = skip_typeref(entry->declaration.type);
3142 if (entry_type->kind == TYPE_BITFIELD) {
3143 return bitfield_extract_to_firm(expression, addr);
3146 return deref_address(dbgi, type, addr);
3149 /* Values returned by __builtin_classify_type. */
3150 typedef enum gcc_type_class
3156 enumeral_type_class,
3159 reference_type_class,
3163 function_type_class,
3174 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
3176 type_t *type = expr->type_expression->base.type;
3178 /* FIXME gcc returns different values depending on whether compiling C or C++
3179 * e.g. int x[10] is pointer_type_class in C, but array_type_class in C++ */
3182 type = skip_typeref(type);
3183 switch (type->kind) {
3185 const atomic_type_t *const atomic_type = &type->atomic;
3186 switch (atomic_type->akind) {
3187 /* should not be reached */
3188 case ATOMIC_TYPE_INVALID:
3192 /* gcc cannot do that */
3193 case ATOMIC_TYPE_VOID:
3194 tc = void_type_class;
3197 case ATOMIC_TYPE_WCHAR_T: /* gcc handles this as integer */
3198 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
3199 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
3200 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
3201 case ATOMIC_TYPE_SHORT:
3202 case ATOMIC_TYPE_USHORT:
3203 case ATOMIC_TYPE_INT:
3204 case ATOMIC_TYPE_UINT:
3205 case ATOMIC_TYPE_LONG:
3206 case ATOMIC_TYPE_ULONG:
3207 case ATOMIC_TYPE_LONGLONG:
3208 case ATOMIC_TYPE_ULONGLONG:
3209 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
3210 tc = integer_type_class;
3213 case ATOMIC_TYPE_FLOAT:
3214 case ATOMIC_TYPE_DOUBLE:
3215 case ATOMIC_TYPE_LONG_DOUBLE:
3216 tc = real_type_class;
3219 panic("Unexpected atomic type in classify_type_to_firm().");
3222 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
3223 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
3224 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
3225 case TYPE_ARRAY: /* gcc handles this as pointer */
3226 case TYPE_FUNCTION: /* gcc handles this as pointer */
3227 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
3228 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
3229 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
3231 /* gcc handles this as integer */
3232 case TYPE_ENUM: tc = integer_type_class; goto make_const;
3234 /* gcc classifies the referenced type */
3235 case TYPE_REFERENCE: type = type->reference.refers_to; continue;
3238 /* typedef/typeof should be skipped already */
3245 panic("unexpected TYPE classify_type_to_firm().");
3249 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3250 tarval *const tv = new_tarval_from_long(tc, mode_int);
3251 return new_d_Const(dbgi, tv);
3254 static ir_node *function_name_to_firm(
3255 const funcname_expression_t *const expr)
3257 switch(expr->kind) {
3258 case FUNCNAME_FUNCTION:
3259 case FUNCNAME_PRETTY_FUNCTION:
3260 case FUNCNAME_FUNCDNAME:
3261 if (current_function_name == NULL) {
3262 const source_position_t *const src_pos = &expr->base.source_position;
3263 const char *name = current_function_entity->base.symbol->string;
3264 const string_t string = { name, strlen(name) + 1 };
3265 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
3267 return current_function_name;
3268 case FUNCNAME_FUNCSIG:
3269 if (current_funcsig == NULL) {
3270 const source_position_t *const src_pos = &expr->base.source_position;
3271 ir_entity *ent = get_irg_entity(current_ir_graph);
3272 const char *const name = get_entity_ld_name(ent);
3273 const string_t string = { name, strlen(name) + 1 };
3274 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
3276 return current_funcsig;
3278 panic("Unsupported function name");
3281 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
3283 statement_t *statement = expr->statement;
3285 assert(statement->kind == STATEMENT_COMPOUND);
3286 return compound_statement_to_firm(&statement->compound);
3289 static ir_node *va_start_expression_to_firm(
3290 const va_start_expression_t *const expr)
3292 type_t *const type = current_function_entity->declaration.type;
3293 ir_type *const method_type = get_ir_type(type);
3294 int const n = get_method_n_params(method_type) - 1;
3295 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
3296 ir_node *const frame = get_irg_frame(current_ir_graph);
3297 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3298 ir_node *const no_mem = new_NoMem();
3299 ir_node *const arg_sel =
3300 new_d_simpleSel(dbgi, no_mem, frame, parm_ent);
3302 type_t *const param_type = expr->parameter->base.type;
3303 ir_node *const cnst = get_type_size_node(param_type);
3304 ir_mode *const mode = get_irn_mode(cnst);
3305 ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
3306 ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
3307 ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align);
3308 ir_node *const c4 = new_d_And(dbgi, c2, c3, mode);
3309 ir_node *const add = new_d_Add(dbgi, arg_sel, c4, mode_P_data);
3310 set_value_for_expression(expr->ap, add);
3315 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
3317 type_t *const type = expr->base.type;
3318 expression_t *const ap_expr = expr->ap;
3319 ir_node *const ap_addr = expression_to_addr(ap_expr);
3320 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
3321 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3322 ir_node *const res = deref_address(dbgi, type, ap);
3324 ir_node *const cnst = get_type_size_node(expr->base.type);
3325 ir_mode *const mode = get_irn_mode(cnst);
3326 ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
3327 ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
3328 ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align);
3329 ir_node *const c4 = new_d_And(dbgi, c2, c3, mode);
3330 ir_node *const add = new_d_Add(dbgi, ap, c4, mode_P_data);
3332 set_value_for_expression_addr(ap_expr, add, ap_addr);
3338 * Generate Firm for a va_copy expression.
3340 static ir_node *va_copy_expression_to_firm(const va_copy_expression_t *const expr)
3342 ir_node *const src = expression_to_firm(expr->src);
3343 set_value_for_expression(expr->dst, src);
3347 static ir_node *dereference_addr(const unary_expression_t *const expression)
3349 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
3350 return expression_to_firm(expression->value);
3354 * Returns a IR-node representing an lvalue of the given expression.
3356 static ir_node *expression_to_addr(const expression_t *expression)
3358 switch(expression->kind) {
3359 case EXPR_ARRAY_ACCESS:
3360 return array_access_addr(&expression->array_access);
3362 return call_expression_to_firm(&expression->call);
3363 case EXPR_COMPOUND_LITERAL:
3364 return compound_literal_to_firm(&expression->compound_literal);
3365 case EXPR_REFERENCE:
3366 return reference_addr(&expression->reference);
3368 return select_addr(&expression->select);
3369 case EXPR_UNARY_DEREFERENCE:
3370 return dereference_addr(&expression->unary);
3374 panic("trying to get address of non-lvalue");
3377 static ir_node *builtin_constant_to_firm(
3378 const builtin_constant_expression_t *expression)
3380 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3383 if (is_constant_expression(expression->value)) {
3388 return new_Const_long(mode, v);
3391 static ir_node *builtin_types_compatible_to_firm(
3392 const builtin_types_compatible_expression_t *expression)
3394 type_t *const left = get_unqualified_type(skip_typeref(expression->left));
3395 type_t *const right = get_unqualified_type(skip_typeref(expression->right));
3396 long const value = types_compatible(left, right) ? 1 : 0;
3397 ir_mode *const mode = get_ir_mode_arithmetic(expression->base.type);
3398 return new_Const_long(mode, value);
3401 static ir_node *get_label_block(label_t *label)
3403 if (label->block != NULL)
3404 return label->block;
3406 /* beware: might be called from create initializer with current_ir_graph
3407 * set to const_code_irg. */
3408 ir_graph *rem = current_ir_graph;
3409 current_ir_graph = current_function;
3411 ir_node *block = new_immBlock();
3413 label->block = block;
3415 ARR_APP1(label_t *, all_labels, label);
3417 current_ir_graph = rem;
3422 * Pointer to a label. This is used for the
3423 * GNU address-of-label extension.
3425 static ir_node *label_address_to_firm(
3426 const label_address_expression_t *label)
3428 ir_node *block = get_label_block(label->label);
3429 ir_label_t nr = get_Block_label(block);
3432 nr = get_irp_next_label_nr();
3433 set_Block_label(block, nr);
3435 symconst_symbol value;
3437 return new_SymConst(mode_P_code, value, symconst_label);
3441 * creates firm nodes for an expression. The difference between this function
3442 * and expression_to_firm is, that this version might produce mode_b nodes
3443 * instead of mode_Is.
3445 static ir_node *_expression_to_firm(const expression_t *expression)
3448 if (!constant_folding) {
3449 assert(!expression->base.transformed);
3450 ((expression_t*) expression)->base.transformed = true;
3454 switch (expression->kind) {
3455 case EXPR_CHARACTER_CONSTANT:
3456 return character_constant_to_firm(&expression->conste);
3457 case EXPR_WIDE_CHARACTER_CONSTANT:
3458 return wide_character_constant_to_firm(&expression->conste);
3460 return const_to_firm(&expression->conste);
3461 case EXPR_STRING_LITERAL:
3462 return string_literal_to_firm(&expression->string);
3463 case EXPR_WIDE_STRING_LITERAL:
3464 return wide_string_literal_to_firm(&expression->wide_string);
3465 case EXPR_REFERENCE:
3466 return reference_expression_to_firm(&expression->reference);
3467 case EXPR_REFERENCE_ENUM_VALUE:
3468 return reference_expression_enum_value_to_firm(&expression->reference);
3470 return call_expression_to_firm(&expression->call);
3472 return unary_expression_to_firm(&expression->unary);
3474 return binary_expression_to_firm(&expression->binary);
3475 case EXPR_ARRAY_ACCESS:
3476 return array_access_to_firm(&expression->array_access);
3478 return sizeof_to_firm(&expression->typeprop);
3480 return alignof_to_firm(&expression->typeprop);
3481 case EXPR_CONDITIONAL:
3482 return conditional_to_firm(&expression->conditional);
3484 return select_to_firm(&expression->select);
3485 case EXPR_CLASSIFY_TYPE:
3486 return classify_type_to_firm(&expression->classify_type);
3488 return function_name_to_firm(&expression->funcname);
3489 case EXPR_STATEMENT:
3490 return statement_expression_to_firm(&expression->statement);
3492 return va_start_expression_to_firm(&expression->va_starte);
3494 return va_arg_expression_to_firm(&expression->va_arge);
3496 return va_copy_expression_to_firm(&expression->va_copye);
3497 case EXPR_BUILTIN_CONSTANT_P:
3498 return builtin_constant_to_firm(&expression->builtin_constant);
3499 case EXPR_BUILTIN_TYPES_COMPATIBLE_P:
3500 return builtin_types_compatible_to_firm(&expression->builtin_types_compatible);
3502 return offsetof_to_firm(&expression->offsetofe);
3503 case EXPR_COMPOUND_LITERAL:
3504 return compound_literal_to_firm(&expression->compound_literal);
3505 case EXPR_LABEL_ADDRESS:
3506 return label_address_to_firm(&expression->label_address);
3512 panic("invalid expression found");
3516 * Check if a given expression is a GNU __builtin_expect() call.
3518 static bool is_builtin_expect(const expression_t *expression)
3520 if (expression->kind != EXPR_CALL)
3523 expression_t *function = expression->call.function;
3524 if (function->kind != EXPR_REFERENCE)
3526 reference_expression_t *ref = &function->reference;
3527 if (ref->entity->kind != ENTITY_FUNCTION ||
3528 ref->entity->function.btk != bk_gnu_builtin_expect)
3534 static bool produces_mode_b(const expression_t *expression)
3536 switch (expression->kind) {
3537 case EXPR_BINARY_EQUAL:
3538 case EXPR_BINARY_NOTEQUAL:
3539 case EXPR_BINARY_LESS:
3540 case EXPR_BINARY_LESSEQUAL:
3541 case EXPR_BINARY_GREATER:
3542 case EXPR_BINARY_GREATEREQUAL:
3543 case EXPR_BINARY_ISGREATER:
3544 case EXPR_BINARY_ISGREATEREQUAL:
3545 case EXPR_BINARY_ISLESS:
3546 case EXPR_BINARY_ISLESSEQUAL:
3547 case EXPR_BINARY_ISLESSGREATER:
3548 case EXPR_BINARY_ISUNORDERED:
3549 case EXPR_UNARY_NOT:
3553 if (is_builtin_expect(expression)) {
3554 expression_t *argument = expression->call.arguments->expression;
3555 return produces_mode_b(argument);
3558 case EXPR_BINARY_COMMA:
3559 return produces_mode_b(expression->binary.right);
3566 static ir_node *expression_to_firm(const expression_t *expression)
3568 if (!produces_mode_b(expression)) {
3569 ir_node *res = _expression_to_firm(expression);
3570 assert(res == NULL || get_irn_mode(res) != mode_b);
3574 if (is_constant_expression(expression)) {
3575 ir_node *res = _expression_to_firm(expression);
3576 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3577 assert(is_Const(res));
3578 if (is_Const_null(res)) {
3579 return new_Const_long(mode, 0);
3581 return new_Const_long(mode, 1);
3585 /* we have to produce a 0/1 from the mode_b expression */
3586 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3587 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3588 return produce_condition_result(expression, mode, dbgi);
3592 * create a short-circuit expression evaluation that tries to construct
3593 * efficient control flow structures for &&, || and ! expressions
3595 static ir_node *create_condition_evaluation(const expression_t *expression,
3596 ir_node *true_block,
3597 ir_node *false_block)
3599 switch(expression->kind) {
3600 case EXPR_UNARY_NOT: {
3601 const unary_expression_t *unary_expression = &expression->unary;
3602 create_condition_evaluation(unary_expression->value, false_block,
3606 case EXPR_BINARY_LOGICAL_AND: {
3607 const binary_expression_t *binary_expression = &expression->binary;
3609 ir_node *extra_block = new_immBlock();
3610 create_condition_evaluation(binary_expression->left, extra_block,
3612 mature_immBlock(extra_block);
3613 set_cur_block(extra_block);
3614 create_condition_evaluation(binary_expression->right, true_block,
3618 case EXPR_BINARY_LOGICAL_OR: {
3619 const binary_expression_t *binary_expression = &expression->binary;
3621 ir_node *extra_block = new_immBlock();
3622 create_condition_evaluation(binary_expression->left, true_block,
3624 mature_immBlock(extra_block);
3625 set_cur_block(extra_block);
3626 create_condition_evaluation(binary_expression->right, true_block,
3634 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3635 ir_node *cond_expr = _expression_to_firm(expression);
3636 ir_node *condition = create_conv(dbgi, cond_expr, mode_b);
3637 ir_node *cond = new_d_Cond(dbgi, condition);
3638 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3639 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3641 /* set branch prediction info based on __builtin_expect */
3642 if (is_builtin_expect(expression) && is_Cond(cond)) {
3643 call_argument_t *argument = expression->call.arguments->next;
3644 if (is_constant_expression(argument->expression)) {
3645 bool cnst = fold_constant_to_bool(argument->expression);
3646 cond_jmp_predicate pred;
3648 if (cnst == false) {
3649 pred = COND_JMP_PRED_FALSE;
3651 pred = COND_JMP_PRED_TRUE;
3653 set_Cond_jmp_pred(cond, pred);
3657 add_immBlock_pred(true_block, true_proj);
3658 add_immBlock_pred(false_block, false_proj);
3660 set_cur_block(NULL);
3664 static void create_variable_entity(entity_t *variable,
3665 declaration_kind_t declaration_kind,
3666 ir_type *parent_type)
3668 assert(variable->kind == ENTITY_VARIABLE);
3669 type_t *type = skip_typeref(variable->declaration.type);
3671 ident *const id = new_id_from_str(variable->base.symbol->string);
3672 ir_type *const irtype = get_ir_type(type);
3673 dbg_info *const dbgi = get_dbg_info(&variable->base.source_position);
3674 ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi);
3675 unsigned alignment = variable->declaration.alignment;
3677 set_entity_alignment(irentity, alignment);
3679 handle_decl_modifiers(irentity, variable);
3681 variable->declaration.kind = (unsigned char) declaration_kind;
3682 variable->variable.v.entity = irentity;
3683 set_entity_variability(irentity, variability_uninitialized);
3684 set_entity_ld_ident(irentity, create_ld_ident(variable));
3686 if (parent_type == get_tls_type())
3687 set_entity_allocation(irentity, allocation_automatic);
3688 else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3689 set_entity_allocation(irentity, allocation_static);
3691 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3692 set_entity_volatility(irentity, volatility_is_volatile);
3697 typedef struct type_path_entry_t type_path_entry_t;
3698 struct type_path_entry_t {
3700 ir_initializer_t *initializer;
3702 entity_t *compound_entry;
3705 typedef struct type_path_t type_path_t;
3706 struct type_path_t {
3707 type_path_entry_t *path;
3712 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3714 size_t len = ARR_LEN(path->path);
3716 for (size_t i = 0; i < len; ++i) {
3717 const type_path_entry_t *entry = & path->path[i];
3719 type_t *type = skip_typeref(entry->type);
3720 if (is_type_compound(type)) {
3721 fprintf(stderr, ".%s", entry->compound_entry->base.symbol->string);
3722 } else if (is_type_array(type)) {
3723 fprintf(stderr, "[%u]", (unsigned) entry->index);
3725 fprintf(stderr, "-INVALID-");
3728 fprintf(stderr, " (");
3729 print_type(path->top_type);
3730 fprintf(stderr, ")");
3733 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3735 size_t len = ARR_LEN(path->path);
3737 return & path->path[len-1];
3740 static type_path_entry_t *append_to_type_path(type_path_t *path)
3742 size_t len = ARR_LEN(path->path);
3743 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3745 type_path_entry_t *result = & path->path[len];
3746 memset(result, 0, sizeof(result[0]));
3750 static size_t get_compound_member_count(const compound_type_t *type)
3752 compound_t *compound = type->compound;
3753 size_t n_members = 0;
3754 entity_t *member = compound->members.entities;
3755 for ( ; member != NULL; member = member->base.next) {
3762 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3764 type_t *orig_top_type = path->top_type;
3765 type_t *top_type = skip_typeref(orig_top_type);
3767 assert(is_type_compound(top_type) || is_type_array(top_type));
3769 if (ARR_LEN(path->path) == 0) {
3772 type_path_entry_t *top = get_type_path_top(path);
3773 ir_initializer_t *initializer = top->initializer;
3774 return get_initializer_compound_value(initializer, top->index);
3778 static void descend_into_subtype(type_path_t *path)
3780 type_t *orig_top_type = path->top_type;
3781 type_t *top_type = skip_typeref(orig_top_type);
3783 assert(is_type_compound(top_type) || is_type_array(top_type));
3785 ir_initializer_t *initializer = get_initializer_entry(path);
3787 type_path_entry_t *top = append_to_type_path(path);
3788 top->type = top_type;
3792 if (is_type_compound(top_type)) {
3793 compound_t *compound = top_type->compound.compound;
3794 entity_t *entry = compound->members.entities;
3796 top->compound_entry = entry;
3798 len = get_compound_member_count(&top_type->compound);
3799 if (entry != NULL) {
3800 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3801 path->top_type = entry->declaration.type;
3804 assert(is_type_array(top_type));
3805 assert(top_type->array.size > 0);
3808 path->top_type = top_type->array.element_type;
3809 len = top_type->array.size;
3811 if (initializer == NULL
3812 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3813 initializer = create_initializer_compound(len);
3814 /* we have to set the entry at the 2nd latest path entry... */
3815 size_t path_len = ARR_LEN(path->path);
3816 assert(path_len >= 1);
3818 type_path_entry_t *entry = & path->path[path_len-2];
3819 ir_initializer_t *tinitializer = entry->initializer;
3820 set_initializer_compound_value(tinitializer, entry->index,
3824 top->initializer = initializer;
3827 static void ascend_from_subtype(type_path_t *path)
3829 type_path_entry_t *top = get_type_path_top(path);
3831 path->top_type = top->type;
3833 size_t len = ARR_LEN(path->path);
3834 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3837 static void walk_designator(type_path_t *path, const designator_t *designator)
3839 /* designators start at current object type */
3840 ARR_RESIZE(type_path_entry_t, path->path, 1);
3842 for ( ; designator != NULL; designator = designator->next) {
3843 type_path_entry_t *top = get_type_path_top(path);
3844 type_t *orig_type = top->type;
3845 type_t *type = skip_typeref(orig_type);
3847 if (designator->symbol != NULL) {
3848 assert(is_type_compound(type));
3850 symbol_t *symbol = designator->symbol;
3852 compound_t *compound = type->compound.compound;
3853 entity_t *iter = compound->members.entities;
3854 for ( ; iter != NULL; iter = iter->base.next, ++index) {
3855 if (iter->base.symbol == symbol) {
3856 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
3860 assert(iter != NULL);
3862 top->type = orig_type;
3863 top->compound_entry = iter;
3865 orig_type = iter->declaration.type;
3867 expression_t *array_index = designator->array_index;
3868 assert(designator->array_index != NULL);
3869 assert(is_type_array(type));
3871 long index = fold_constant_to_int(array_index);
3874 if (type->array.size_constant) {
3875 long array_size = type->array.size;
3876 assert(index < array_size);
3880 top->type = orig_type;
3881 top->index = (size_t) index;
3882 orig_type = type->array.element_type;
3884 path->top_type = orig_type;
3886 if (designator->next != NULL) {
3887 descend_into_subtype(path);
3891 path->invalid = false;
3894 static void advance_current_object(type_path_t *path)
3896 if (path->invalid) {
3897 /* TODO: handle this... */
3898 panic("invalid initializer in ast2firm (excessive elements)");
3901 type_path_entry_t *top = get_type_path_top(path);
3903 type_t *type = skip_typeref(top->type);
3904 if (is_type_union(type)) {
3905 top->compound_entry = NULL;
3906 } else if (is_type_struct(type)) {
3907 entity_t *entry = top->compound_entry;
3910 entry = entry->base.next;
3911 top->compound_entry = entry;
3912 if (entry != NULL) {
3913 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3914 path->top_type = entry->declaration.type;
3918 assert(is_type_array(type));
3921 if (!type->array.size_constant || top->index < type->array.size) {
3926 /* we're past the last member of the current sub-aggregate, try if we
3927 * can ascend in the type hierarchy and continue with another subobject */
3928 size_t len = ARR_LEN(path->path);
3931 ascend_from_subtype(path);
3932 advance_current_object(path);
3934 path->invalid = true;
3939 static ir_initializer_t *create_ir_initializer(
3940 const initializer_t *initializer, type_t *type);
3942 static ir_initializer_t *create_ir_initializer_value(
3943 const initializer_value_t *initializer)
3945 if (is_type_compound(initializer->value->base.type)) {
3946 panic("initializer creation for compounds not implemented yet");
3948 ir_node *value = expression_to_firm(initializer->value);
3949 type_t *type = initializer->value->base.type;
3950 ir_mode *mode = get_ir_mode_storage(type);
3951 value = create_conv(NULL, value, mode);
3952 return create_initializer_const(value);
3955 /** test wether type can be initialized by a string constant */
3956 static bool is_string_type(type_t *type)
3959 if (is_type_pointer(type)) {
3960 inner = skip_typeref(type->pointer.points_to);
3961 } else if(is_type_array(type)) {
3962 inner = skip_typeref(type->array.element_type);
3967 return is_type_integer(inner);
3970 static ir_initializer_t *create_ir_initializer_list(
3971 const initializer_list_t *initializer, type_t *type)
3974 memset(&path, 0, sizeof(path));
3975 path.top_type = type;
3976 path.path = NEW_ARR_F(type_path_entry_t, 0);
3978 descend_into_subtype(&path);
3980 for (size_t i = 0; i < initializer->len; ++i) {
3981 const initializer_t *sub_initializer = initializer->initializers[i];
3983 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3984 walk_designator(&path, sub_initializer->designator.designator);
3988 if (sub_initializer->kind == INITIALIZER_VALUE) {
3989 /* we might have to descend into types until we're at a scalar
3992 type_t *orig_top_type = path.top_type;
3993 type_t *top_type = skip_typeref(orig_top_type);
3995 if (is_type_scalar(top_type))
3997 descend_into_subtype(&path);
3999 } else if (sub_initializer->kind == INITIALIZER_STRING
4000 || sub_initializer->kind == INITIALIZER_WIDE_STRING) {
4001 /* we might have to descend into types until we're at a scalar
4004 type_t *orig_top_type = path.top_type;
4005 type_t *top_type = skip_typeref(orig_top_type);
4007 if (is_string_type(top_type))
4009 descend_into_subtype(&path);
4013 ir_initializer_t *sub_irinitializer
4014 = create_ir_initializer(sub_initializer, path.top_type);
4016 size_t path_len = ARR_LEN(path.path);
4017 assert(path_len >= 1);
4018 type_path_entry_t *entry = & path.path[path_len-1];
4019 ir_initializer_t *tinitializer = entry->initializer;
4020 set_initializer_compound_value(tinitializer, entry->index,
4023 advance_current_object(&path);
4026 assert(ARR_LEN(path.path) >= 1);
4027 ir_initializer_t *result = path.path[0].initializer;
4028 DEL_ARR_F(path.path);
4033 static ir_initializer_t *create_ir_initializer_string(
4034 const initializer_string_t *initializer, type_t *type)
4036 type = skip_typeref(type);
4038 size_t string_len = initializer->string.size;
4039 assert(type->kind == TYPE_ARRAY);
4040 assert(type->array.size_constant);
4041 size_t len = type->array.size;
4042 ir_initializer_t *irinitializer = create_initializer_compound(len);
4044 const char *string = initializer->string.begin;
4045 ir_mode *mode = get_ir_mode_storage(type->array.element_type);
4047 for (size_t i = 0; i < len; ++i) {
4052 tarval *tv = new_tarval_from_long(c, mode);
4053 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
4055 set_initializer_compound_value(irinitializer, i, char_initializer);
4058 return irinitializer;
4061 static ir_initializer_t *create_ir_initializer_wide_string(
4062 const initializer_wide_string_t *initializer, type_t *type)
4064 size_t string_len = initializer->string.size;
4065 assert(type->kind == TYPE_ARRAY);
4066 assert(type->array.size_constant);
4067 size_t len = type->array.size;
4068 ir_initializer_t *irinitializer = create_initializer_compound(len);
4070 const wchar_rep_t *string = initializer->string.begin;
4071 ir_mode *mode = get_type_mode(ir_type_wchar_t);
4073 for (size_t i = 0; i < len; ++i) {
4075 if (i < string_len) {
4078 tarval *tv = new_tarval_from_long(c, mode);
4079 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
4081 set_initializer_compound_value(irinitializer, i, char_initializer);
4084 return irinitializer;
4087 static ir_initializer_t *create_ir_initializer(
4088 const initializer_t *initializer, type_t *type)
4090 switch(initializer->kind) {
4091 case INITIALIZER_STRING:
4092 return create_ir_initializer_string(&initializer->string, type);
4094 case INITIALIZER_WIDE_STRING:
4095 return create_ir_initializer_wide_string(&initializer->wide_string,
4098 case INITIALIZER_LIST:
4099 return create_ir_initializer_list(&initializer->list, type);
4101 case INITIALIZER_VALUE:
4102 return create_ir_initializer_value(&initializer->value);
4104 case INITIALIZER_DESIGNATOR:
4105 panic("unexpected designator initializer found");
4107 panic("unknown initializer");
4110 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
4113 if (is_atomic_type(type)) {
4114 ir_mode *mode = get_type_mode(type);
4115 tarval *zero = get_mode_null(mode);
4116 ir_node *cnst = new_d_Const(dbgi, zero);
4118 /* TODO: bitfields */
4119 ir_node *mem = get_store();
4120 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst, cons_none);
4121 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4124 assert(is_compound_type(type));
4127 if (is_Array_type(type)) {
4128 assert(has_array_upper_bound(type, 0));
4129 n_members = get_array_upper_bound_int(type, 0);
4131 n_members = get_compound_n_members(type);
4134 for (int i = 0; i < n_members; ++i) {
4137 if (is_Array_type(type)) {
4138 ir_entity *entity = get_array_element_entity(type);
4139 tarval *index_tv = new_tarval_from_long(i, mode_uint);
4140 ir_node *cnst = new_d_Const(dbgi, index_tv);
4141 ir_node *in[1] = { cnst };
4142 irtype = get_array_element_type(type);
4143 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
4145 ir_entity *member = get_compound_member(type, i);
4147 irtype = get_entity_type(member);
4148 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
4151 create_dynamic_null_initializer(irtype, dbgi, addr);
4156 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
4157 ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr)
4159 switch(get_initializer_kind(initializer)) {
4160 case IR_INITIALIZER_NULL: {
4161 create_dynamic_null_initializer(type, dbgi, base_addr);
4164 case IR_INITIALIZER_CONST: {
4165 ir_node *node = get_initializer_const_value(initializer);
4166 ir_mode *mode = get_irn_mode(node);
4167 ir_type *ent_type = get_entity_type(entity);
4169 /* is it a bitfield type? */
4170 if (is_Primitive_type(ent_type) &&
4171 get_primitive_base_type(ent_type) != NULL) {
4172 bitfield_store_to_firm(dbgi, entity, base_addr, node, false);
4176 assert(get_type_mode(type) == mode);
4177 ir_node *mem = get_store();
4178 ir_node *store = new_d_Store(dbgi, mem, base_addr, node, cons_none);
4179 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4183 case IR_INITIALIZER_TARVAL: {
4184 tarval *tv = get_initializer_tarval_value(initializer);
4185 ir_mode *mode = get_tarval_mode(tv);
4186 ir_node *cnst = new_d_Const(dbgi, tv);
4187 ir_type *ent_type = get_entity_type(entity);
4189 /* is it a bitfield type? */
4190 if (is_Primitive_type(ent_type) &&
4191 get_primitive_base_type(ent_type) != NULL) {
4192 bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false);
4196 assert(get_type_mode(type) == mode);
4197 ir_node *mem = get_store();
4198 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst, cons_none);
4199 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4203 case IR_INITIALIZER_COMPOUND: {
4204 assert(is_compound_type(type));
4206 if (is_Array_type(type)) {
4207 assert(has_array_upper_bound(type, 0));
4208 n_members = get_array_upper_bound_int(type, 0);
4210 n_members = get_compound_n_members(type);
4213 if (get_initializer_compound_n_entries(initializer)
4214 != (unsigned) n_members)
4215 panic("initializer doesn't match compound type");
4217 for (int i = 0; i < n_members; ++i) {
4220 ir_entity *sub_entity;
4221 if (is_Array_type(type)) {
4222 tarval *index_tv = new_tarval_from_long(i, mode_uint);
4223 ir_node *cnst = new_d_Const(dbgi, index_tv);
4224 ir_node *in[1] = { cnst };
4225 irtype = get_array_element_type(type);
4226 sub_entity = get_array_element_entity(type);
4227 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
4230 sub_entity = get_compound_member(type, i);
4231 irtype = get_entity_type(sub_entity);
4232 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
4236 ir_initializer_t *sub_init
4237 = get_initializer_compound_value(initializer, i);
4239 create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
4246 panic("invalid IR_INITIALIZER found");
4249 static void create_dynamic_initializer(ir_initializer_t *initializer,
4250 dbg_info *dbgi, ir_entity *entity)
4252 ir_node *frame = get_irg_frame(current_ir_graph);
4253 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
4254 ir_type *type = get_entity_type(entity);
4256 create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
4259 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
4260 ir_entity *entity, type_t *type)
4262 ir_node *memory = get_store();
4263 ir_node *nomem = new_NoMem();
4264 ir_node *frame = get_irg_frame(current_ir_graph);
4265 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
4267 if (initializer->kind == INITIALIZER_VALUE) {
4268 initializer_value_t *initializer_value = &initializer->value;
4270 ir_node *value = expression_to_firm(initializer_value->value);
4271 type = skip_typeref(type);
4272 assign_value(dbgi, addr, type, value);
4276 if (!is_constant_initializer(initializer)) {
4277 ir_initializer_t *irinitializer
4278 = create_ir_initializer(initializer, type);
4280 create_dynamic_initializer(irinitializer, dbgi, entity);
4284 /* create the ir_initializer */
4285 ir_graph *const old_current_ir_graph = current_ir_graph;
4286 current_ir_graph = get_const_code_irg();
4288 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
4290 assert(current_ir_graph == get_const_code_irg());
4291 current_ir_graph = old_current_ir_graph;
4293 /* create a "template" entity which is copied to the entity on the stack */
4294 ident *const id = id_unique("initializer.%u");
4295 ir_type *const irtype = get_ir_type(type);
4296 ir_type *const global_type = get_glob_type();
4297 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
4298 set_entity_ld_ident(init_entity, id);
4300 set_entity_variability(init_entity, variability_initialized);
4301 set_entity_visibility(init_entity, visibility_local);
4302 set_entity_allocation(init_entity, allocation_static);
4304 set_entity_initializer(init_entity, irinitializer);
4306 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
4307 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
4309 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
4310 set_store(copyb_mem);
4313 static void create_initializer_local_variable_entity(entity_t *entity)
4315 assert(entity->kind == ENTITY_VARIABLE);
4316 initializer_t *initializer = entity->variable.initializer;
4317 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4318 ir_entity *irentity = entity->variable.v.entity;
4319 type_t *type = entity->declaration.type;
4321 create_local_initializer(initializer, dbgi, irentity, type);
4324 static void create_variable_initializer(entity_t *entity)
4326 assert(entity->kind == ENTITY_VARIABLE);
4327 initializer_t *initializer = entity->variable.initializer;
4328 if (initializer == NULL)
4331 declaration_kind_t declaration_kind
4332 = (declaration_kind_t) entity->declaration.kind;
4333 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
4334 create_initializer_local_variable_entity(entity);
4338 type_t *type = entity->declaration.type;
4339 type_qualifiers_t tq = get_type_qualifier(type, true);
4341 if (initializer->kind == INITIALIZER_VALUE) {
4342 initializer_value_t *initializer_value = &initializer->value;
4343 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4345 ir_node *value = expression_to_firm(initializer_value->value);
4347 type_t *type = initializer_value->value->base.type;
4348 ir_mode *mode = get_ir_mode_storage(type);
4349 value = create_conv(dbgi, value, mode);
4350 value = do_strict_conv(dbgi, value);
4352 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
4353 set_value(entity->variable.v.value_number, value);
4355 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4357 ir_entity *irentity = entity->variable.v.entity;
4359 if (tq & TYPE_QUALIFIER_CONST) {
4360 set_entity_variability(irentity, variability_constant);
4362 set_entity_variability(irentity, variability_initialized);
4364 set_atomic_ent_value(irentity, value);
4367 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
4368 declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4370 ir_entity *irentity = entity->variable.v.entity;
4371 ir_initializer_t *irinitializer
4372 = create_ir_initializer(initializer, type);
4374 if (tq & TYPE_QUALIFIER_CONST) {
4375 set_entity_variability(irentity, variability_constant);
4377 set_entity_variability(irentity, variability_initialized);
4379 set_entity_initializer(irentity, irinitializer);
4383 static void create_variable_length_array(entity_t *entity)
4385 assert(entity->kind == ENTITY_VARIABLE);
4386 assert(entity->variable.initializer == NULL);
4388 entity->declaration.kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
4389 entity->variable.v.vla_base = NULL;
4391 /* TODO: record VLA somewhere so we create the free node when we leave
4395 static void allocate_variable_length_array(entity_t *entity)
4397 assert(entity->kind == ENTITY_VARIABLE);
4398 assert(entity->variable.initializer == NULL);
4399 assert(get_cur_block() != NULL);
4401 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4402 type_t *type = entity->declaration.type;
4403 ir_type *el_type = get_ir_type(type->array.element_type);
4405 /* make sure size_node is calculated */
4406 get_type_size_node(type);
4407 ir_node *elems = type->array.size_node;
4408 ir_node *mem = get_store();
4409 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
4411 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
4412 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
4415 assert(entity->declaration.kind == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
4416 entity->variable.v.vla_base = addr;
4420 * Creates a Firm local variable from a declaration.
4422 static void create_local_variable(entity_t *entity)
4424 assert(entity->kind == ENTITY_VARIABLE);
4425 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4427 bool needs_entity = entity->variable.address_taken;
4428 type_t *type = skip_typeref(entity->declaration.type);
4430 /* is it a variable length array? */
4431 if (is_type_array(type) && !type->array.size_constant) {
4432 create_variable_length_array(entity);
4434 } else if (is_type_array(type) || is_type_compound(type)) {
4435 needs_entity = true;
4436 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4437 needs_entity = true;
4441 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
4442 create_variable_entity(entity,
4443 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
4446 entity->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
4447 entity->variable.v.value_number = next_value_number_function;
4448 set_irg_loc_description(current_ir_graph, next_value_number_function,
4450 ++next_value_number_function;
4454 static void create_local_static_variable(entity_t *entity)
4456 assert(entity->kind == ENTITY_VARIABLE);
4457 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4459 type_t *type = skip_typeref(entity->declaration.type);
4460 ir_type *const var_type = entity->variable.thread_local ?
4461 get_tls_type() : get_glob_type();
4462 ir_type *const irtype = get_ir_type(type);
4463 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
4465 size_t l = strlen(entity->base.symbol->string);
4466 char buf[l + sizeof(".%u")];
4467 snprintf(buf, sizeof(buf), "%s.%%u", entity->base.symbol->string);
4468 ident *const id = id_unique(buf);
4470 ir_entity *const irentity = new_d_entity(var_type, id, irtype, dbgi);
4472 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4473 set_entity_volatility(irentity, volatility_is_volatile);
4476 entity->declaration.kind = DECLARATION_KIND_GLOBAL_VARIABLE;
4477 entity->variable.v.entity = irentity;
4479 set_entity_ld_ident(irentity, id);
4480 set_entity_variability(irentity, variability_uninitialized);
4481 set_entity_visibility(irentity, visibility_local);
4482 set_entity_allocation(irentity, entity->variable.thread_local ?
4483 allocation_automatic : allocation_static);
4485 ir_graph *const old_current_ir_graph = current_ir_graph;
4486 current_ir_graph = get_const_code_irg();
4488 create_variable_initializer(entity);
4490 assert(current_ir_graph == get_const_code_irg());
4491 current_ir_graph = old_current_ir_graph;
4496 static void return_statement_to_firm(return_statement_t *statement)
4498 if (get_cur_block() == NULL)
4501 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4502 type_t *type = current_function_entity->declaration.type;
4503 ir_type *func_irtype = get_ir_type(type);
4508 if (get_method_n_ress(func_irtype) > 0) {
4509 ir_type *res_type = get_method_res_type(func_irtype, 0);
4511 if (statement->value != NULL) {
4512 ir_node *node = expression_to_firm(statement->value);
4513 if (!is_compound_type(res_type)) {
4514 type_t *type = statement->value->base.type;
4515 ir_mode *mode = get_ir_mode_storage(type);
4516 node = create_conv(dbgi, node, mode);
4517 node = do_strict_conv(dbgi, node);
4522 if (is_compound_type(res_type)) {
4525 mode = get_type_mode(res_type);
4527 in[0] = new_Unknown(mode);
4531 /* build return_value for its side effects */
4532 if (statement->value != NULL) {
4533 expression_to_firm(statement->value);
4538 ir_node *store = get_store();
4539 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
4541 ir_node *end_block = get_irg_end_block(current_ir_graph);
4542 add_immBlock_pred(end_block, ret);
4544 set_cur_block(NULL);
4547 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
4549 if (get_cur_block() == NULL)
4552 return expression_to_firm(statement->expression);
4555 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
4557 entity_t *entity = compound->scope.entities;
4558 for ( ; entity != NULL; entity = entity->base.next) {
4559 if (!is_declaration(entity))
4562 create_local_declaration(entity);
4565 ir_node *result = NULL;
4566 statement_t *statement = compound->statements;
4567 for ( ; statement != NULL; statement = statement->base.next) {
4568 if (statement->base.next == NULL
4569 && statement->kind == STATEMENT_EXPRESSION) {
4570 result = expression_statement_to_firm(
4571 &statement->expression);
4574 statement_to_firm(statement);
4580 static void create_global_variable(entity_t *entity)
4582 assert(entity->kind == ENTITY_VARIABLE);
4585 switch ((storage_class_tag_t)entity->declaration.storage_class) {
4586 case STORAGE_CLASS_STATIC: vis = visibility_local; break;
4587 case STORAGE_CLASS_EXTERN: vis = visibility_external_allocated; break;
4588 case STORAGE_CLASS_NONE: vis = visibility_external_visible; break;
4590 default: panic("Invalid storage class for global variable");
4593 ir_type *var_type = entity->variable.thread_local ?
4594 get_tls_type() : get_glob_type();
4595 create_variable_entity(entity,
4596 DECLARATION_KIND_GLOBAL_VARIABLE, var_type);
4597 set_entity_visibility(entity->variable.v.entity, vis);
4600 static void create_local_declaration(entity_t *entity)
4602 assert(is_declaration(entity));
4604 /* construct type */
4605 (void) get_ir_type(entity->declaration.type);
4606 if (entity->base.symbol == NULL) {
4610 switch ((storage_class_tag_t) entity->declaration.storage_class) {
4611 case STORAGE_CLASS_STATIC:
4612 create_local_static_variable(entity);
4614 case STORAGE_CLASS_EXTERN:
4615 if (entity->kind == ENTITY_FUNCTION) {
4616 assert(entity->function.statement == NULL);
4617 (void)get_function_entity(entity, NULL);
4619 create_global_variable(entity);
4620 create_variable_initializer(entity);
4623 case STORAGE_CLASS_NONE:
4624 case STORAGE_CLASS_AUTO:
4625 case STORAGE_CLASS_REGISTER:
4626 if (entity->kind == ENTITY_FUNCTION) {
4627 if (entity->function.statement != NULL) {
4628 ir_type *owner = get_irg_frame_type(current_ir_graph);
4629 (void)get_function_entity(entity, owner);
4630 entity->declaration.kind = DECLARATION_KIND_INNER_FUNCTION;
4631 enqueue_inner_function(entity);
4633 (void)get_function_entity(entity, NULL);
4636 create_local_variable(entity);
4639 case STORAGE_CLASS_TYPEDEF:
4642 panic("invalid storage class found");
4645 static void initialize_local_declaration(entity_t *entity)
4647 if (entity->base.symbol == NULL)
4650 // no need to emit code in dead blocks
4651 if (entity->declaration.storage_class != STORAGE_CLASS_STATIC
4652 && get_cur_block() == NULL)
4655 switch ((declaration_kind_t) entity->declaration.kind) {
4656 case DECLARATION_KIND_LOCAL_VARIABLE:
4657 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4658 create_variable_initializer(entity);
4661 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4662 allocate_variable_length_array(entity);
4665 case DECLARATION_KIND_COMPOUND_MEMBER:
4666 case DECLARATION_KIND_GLOBAL_VARIABLE:
4667 case DECLARATION_KIND_FUNCTION:
4668 case DECLARATION_KIND_INNER_FUNCTION:
4671 case DECLARATION_KIND_PARAMETER:
4672 case DECLARATION_KIND_PARAMETER_ENTITY:
4673 panic("can't initialize parameters");
4675 case DECLARATION_KIND_UNKNOWN:
4676 panic("can't initialize unknown declaration");
4678 panic("invalid declaration kind");
4681 static void declaration_statement_to_firm(declaration_statement_t *statement)
4683 entity_t *entity = statement->declarations_begin;
4687 entity_t *const last = statement->declarations_end;
4688 for ( ;; entity = entity->base.next) {
4689 if (is_declaration(entity)) {
4690 initialize_local_declaration(entity);
4691 } else if (entity->kind == ENTITY_TYPEDEF) {
4692 /* ยง6.7.7:3 Any array size expressions associated with variable length
4693 * array declarators are evaluated each time the declaration of the
4694 * typedef name is reached in the order of execution. */
4695 type_t *const type = skip_typeref(entity->typedefe.type);
4696 if (is_type_array(type) && type->array.is_vla)
4697 get_vla_size(&type->array);
4704 static void if_statement_to_firm(if_statement_t *statement)
4706 ir_node *cur_block = get_cur_block();
4708 ir_node *fallthrough_block = NULL;
4710 /* the true (blocks) */
4711 ir_node *true_block = NULL;
4712 if (statement->true_statement != NULL) {
4713 true_block = new_immBlock();
4714 set_cur_block(true_block);
4715 statement_to_firm(statement->true_statement);
4716 if (get_cur_block() != NULL) {
4717 ir_node *jmp = new_Jmp();
4718 if (fallthrough_block == NULL)
4719 fallthrough_block = new_immBlock();
4720 add_immBlock_pred(fallthrough_block, jmp);
4724 /* the false (blocks) */
4725 ir_node *false_block = NULL;
4726 if (statement->false_statement != NULL) {
4727 false_block = new_immBlock();
4728 set_cur_block(false_block);
4730 statement_to_firm(statement->false_statement);
4731 if (get_cur_block() != NULL) {
4732 ir_node *jmp = new_Jmp();
4733 if (fallthrough_block == NULL)
4734 fallthrough_block = new_immBlock();
4735 add_immBlock_pred(fallthrough_block, jmp);
4739 /* create the condition */
4740 if (cur_block != NULL) {
4741 if (true_block == NULL || false_block == NULL) {
4742 if (fallthrough_block == NULL)
4743 fallthrough_block = new_immBlock();
4744 if (true_block == NULL)
4745 true_block = fallthrough_block;
4746 if (false_block == NULL)
4747 false_block = fallthrough_block;
4750 set_cur_block(cur_block);
4751 create_condition_evaluation(statement->condition, true_block,
4755 mature_immBlock(true_block);
4756 if (false_block != fallthrough_block && false_block != NULL) {
4757 mature_immBlock(false_block);
4759 if (fallthrough_block != NULL) {
4760 mature_immBlock(fallthrough_block);
4763 set_cur_block(fallthrough_block);
4766 static void while_statement_to_firm(while_statement_t *statement)
4768 ir_node *jmp = NULL;
4769 if (get_cur_block() != NULL) {
4773 /* create the header block */
4774 ir_node *header_block = new_immBlock();
4776 add_immBlock_pred(header_block, jmp);
4780 ir_node *old_continue_label = continue_label;
4781 ir_node *old_break_label = break_label;
4782 continue_label = header_block;
4785 ir_node *body_block = new_immBlock();
4786 set_cur_block(body_block);
4787 statement_to_firm(statement->body);
4788 ir_node *false_block = break_label;
4790 assert(continue_label == header_block);
4791 continue_label = old_continue_label;
4792 break_label = old_break_label;
4794 if (get_cur_block() != NULL) {
4796 add_immBlock_pred(header_block, jmp);
4799 /* shortcut for while(true) */
4800 if (is_constant_expression(statement->condition)
4801 && fold_constant_to_bool(statement->condition) != 0) {
4802 set_cur_block(header_block);
4803 ir_node *header_jmp = new_Jmp();
4804 add_immBlock_pred(body_block, header_jmp);
4806 keep_alive(body_block);
4807 keep_all_memory(body_block);
4808 set_cur_block(body_block);
4810 if (false_block == NULL) {
4811 false_block = new_immBlock();
4814 /* create the condition */
4815 set_cur_block(header_block);
4817 create_condition_evaluation(statement->condition, body_block,
4821 mature_immBlock(body_block);
4822 mature_immBlock(header_block);
4823 if (false_block != NULL) {
4824 mature_immBlock(false_block);
4827 set_cur_block(false_block);
4830 static void do_while_statement_to_firm(do_while_statement_t *statement)
4832 ir_node *jmp = NULL;
4833 if (get_cur_block() != NULL) {
4837 /* create the header block */
4838 ir_node *header_block = new_immBlock();
4841 ir_node *body_block = new_immBlock();
4843 add_immBlock_pred(body_block, jmp);
4846 ir_node *old_continue_label = continue_label;
4847 ir_node *old_break_label = break_label;
4848 continue_label = header_block;
4851 set_cur_block(body_block);
4852 statement_to_firm(statement->body);
4853 ir_node *false_block = break_label;
4855 assert(continue_label == header_block);
4856 continue_label = old_continue_label;
4857 break_label = old_break_label;
4859 if (get_cur_block() != NULL) {
4860 ir_node *body_jmp = new_Jmp();
4861 add_immBlock_pred(header_block, body_jmp);
4862 mature_immBlock(header_block);
4865 if (false_block == NULL) {
4866 false_block = new_immBlock();
4869 /* create the condition */
4870 set_cur_block(header_block);
4872 create_condition_evaluation(statement->condition, body_block, false_block);
4873 mature_immBlock(body_block);
4874 mature_immBlock(header_block);
4875 mature_immBlock(false_block);
4877 set_cur_block(false_block);
4880 static void for_statement_to_firm(for_statement_t *statement)
4882 ir_node *jmp = NULL;
4884 /* create declarations */
4885 entity_t *entity = statement->scope.entities;
4886 for ( ; entity != NULL; entity = entity->base.next) {
4887 if (!is_declaration(entity))
4890 create_local_declaration(entity);
4893 if (get_cur_block() != NULL) {
4894 entity = statement->scope.entities;
4895 for ( ; entity != NULL; entity = entity->base.next) {
4896 if (!is_declaration(entity))
4899 initialize_local_declaration(entity);
4902 if (statement->initialisation != NULL) {
4903 expression_to_firm(statement->initialisation);
4910 /* create the step block */
4911 ir_node *const step_block = new_immBlock();
4912 set_cur_block(step_block);
4913 if (statement->step != NULL) {
4914 expression_to_firm(statement->step);
4916 ir_node *const step_jmp = new_Jmp();
4918 /* create the header block */
4919 ir_node *const header_block = new_immBlock();
4920 set_cur_block(header_block);
4922 add_immBlock_pred(header_block, jmp);
4924 add_immBlock_pred(header_block, step_jmp);
4926 /* the false block */
4927 ir_node *const false_block = new_immBlock();
4930 ir_node *body_block;
4931 if (statement->body != NULL) {
4932 ir_node *const old_continue_label = continue_label;
4933 ir_node *const old_break_label = break_label;
4934 continue_label = step_block;
4935 break_label = false_block;
4937 body_block = new_immBlock();
4938 set_cur_block(body_block);
4939 statement_to_firm(statement->body);
4941 assert(continue_label == step_block);
4942 assert(break_label == false_block);
4943 continue_label = old_continue_label;
4944 break_label = old_break_label;
4946 if (get_cur_block() != NULL) {
4948 add_immBlock_pred(step_block, jmp);
4951 body_block = step_block;
4954 /* create the condition */
4955 set_cur_block(header_block);
4956 if (statement->condition != NULL) {
4957 create_condition_evaluation(statement->condition, body_block,
4960 keep_alive(header_block);
4961 keep_all_memory(header_block);
4963 add_immBlock_pred(body_block, jmp);
4966 mature_immBlock(body_block);
4967 mature_immBlock(false_block);
4968 mature_immBlock(step_block);
4969 mature_immBlock(header_block);
4970 mature_immBlock(false_block);
4972 set_cur_block(false_block);
4975 static void create_jump_statement(const statement_t *statement,
4976 ir_node *target_block)
4978 if (get_cur_block() == NULL)
4981 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4982 ir_node *jump = new_d_Jmp(dbgi);
4983 add_immBlock_pred(target_block, jump);
4985 set_cur_block(NULL);
4988 static ir_node *get_break_label(void)
4990 if (break_label == NULL) {
4991 break_label = new_immBlock();
4996 static void switch_statement_to_firm(switch_statement_t *statement)
4998 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5000 ir_node *expression = expression_to_firm(statement->expression);
5001 ir_node *cond = new_d_Cond(dbgi, expression);
5003 set_cur_block(NULL);
5005 ir_node *const old_switch_cond = current_switch_cond;
5006 ir_node *const old_break_label = break_label;
5007 const bool old_saw_default_label = saw_default_label;
5008 saw_default_label = false;
5009 current_switch_cond = cond;
5011 switch_statement_t *const old_switch = current_switch;
5012 current_switch = statement;
5014 /* determine a free number for the default label */
5015 unsigned long num_cases = 0;
5017 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
5018 if (l->expression == NULL) {
5022 if (l->last_case >= l->first_case)
5023 num_cases += l->last_case - l->first_case + 1;
5024 if (l->last_case > def_nr)
5025 def_nr = l->last_case;
5028 if (def_nr == INT_MAX) {
5029 /* Bad: an overflow will occur, we cannot be sure that the
5030 * maximum + 1 is a free number. Scan the values a second
5031 * time to find a free number.
5033 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
5035 memset(bits, 0, (num_cases + 7) >> 3);
5036 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
5037 if (l->expression == NULL) {
5041 unsigned long start = l->first_case > 0 ? (unsigned long)l->first_case : 0;
5042 if (start < num_cases && l->last_case >= 0) {
5043 unsigned long end = (unsigned long)l->last_case < num_cases ?
5044 (unsigned long)l->last_case : num_cases - 1;
5045 for (unsigned long cns = start; cns <= end; ++cns) {
5046 bits[cns >> 3] |= (1 << (cns & 7));
5050 /* We look at the first num_cases constants:
5051 * Either they are dense, so we took the last (num_cases)
5052 * one, or they are not dense, so we will find one free
5056 for (i = 0; i < num_cases; ++i)
5057 if ((bits[i >> 3] & (1 << (i & 7))) == 0)
5065 statement->default_proj_nr = def_nr;
5067 if (statement->body != NULL) {
5068 statement_to_firm(statement->body);
5071 if (get_cur_block() != NULL) {
5072 ir_node *jmp = new_Jmp();
5073 add_immBlock_pred(get_break_label(), jmp);
5076 if (!saw_default_label) {
5077 set_cur_block(get_nodes_block(cond));
5078 ir_node *const proj = new_d_defaultProj(dbgi, cond,
5079 statement->default_proj_nr);
5080 add_immBlock_pred(get_break_label(), proj);
5083 if (break_label != NULL) {
5084 mature_immBlock(break_label);
5086 set_cur_block(break_label);
5088 assert(current_switch_cond == cond);
5089 current_switch = old_switch;
5090 current_switch_cond = old_switch_cond;
5091 break_label = old_break_label;
5092 saw_default_label = old_saw_default_label;
5095 static void case_label_to_firm(const case_label_statement_t *statement)
5097 if (statement->is_empty_range)
5100 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5102 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
5105 ir_node *block = new_immBlock();
5107 set_cur_block(get_nodes_block(current_switch_cond));
5108 if (statement->expression != NULL) {
5109 long pn = statement->first_case;
5110 long end_pn = statement->last_case;
5111 assert(pn <= end_pn);
5112 /* create jumps for all cases in the given range */
5114 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
5115 add_immBlock_pred(block, proj);
5116 } while (pn++ < end_pn);
5118 saw_default_label = true;
5119 proj = new_d_defaultProj(dbgi, current_switch_cond,
5120 current_switch->default_proj_nr);
5122 add_immBlock_pred(block, proj);
5125 if (fallthrough != NULL) {
5126 add_immBlock_pred(block, fallthrough);
5128 mature_immBlock(block);
5129 set_cur_block(block);
5131 if (statement->statement != NULL) {
5132 statement_to_firm(statement->statement);
5136 static void label_to_firm(const label_statement_t *statement)
5138 ir_node *block = get_label_block(statement->label);
5140 if (get_cur_block() != NULL) {
5141 ir_node *jmp = new_Jmp();
5142 add_immBlock_pred(block, jmp);
5145 set_cur_block(block);
5147 keep_all_memory(block);
5149 if (statement->statement != NULL) {
5150 statement_to_firm(statement->statement);
5154 static void goto_to_firm(const goto_statement_t *statement)
5156 if (get_cur_block() == NULL)
5159 if (statement->expression) {
5160 ir_node *irn = expression_to_firm(statement->expression);
5161 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5162 ir_node *ijmp = new_d_IJmp(dbgi, irn);
5164 set_irn_link(ijmp, ijmp_list);
5167 ir_node *block = get_label_block(statement->label);
5168 ir_node *jmp = new_Jmp();
5169 add_immBlock_pred(block, jmp);
5171 set_cur_block(NULL);
5174 static void asm_statement_to_firm(const asm_statement_t *statement)
5176 bool needs_memory = false;
5178 if (statement->is_volatile) {
5179 needs_memory = true;
5182 size_t n_clobbers = 0;
5183 asm_clobber_t *clobber = statement->clobbers;
5184 for ( ; clobber != NULL; clobber = clobber->next) {
5185 const char *clobber_str = clobber->clobber.begin;
5187 if (!be_is_valid_clobber(clobber_str)) {
5188 errorf(&statement->base.source_position,
5189 "invalid clobber '%s' specified", clobber->clobber);
5193 if (strcmp(clobber_str, "memory") == 0) {
5194 needs_memory = true;
5198 ident *id = new_id_from_str(clobber_str);
5199 obstack_ptr_grow(&asm_obst, id);
5202 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
5203 ident **clobbers = NULL;
5204 if (n_clobbers > 0) {
5205 clobbers = obstack_finish(&asm_obst);
5208 size_t n_inputs = 0;
5209 asm_argument_t *argument = statement->inputs;
5210 for ( ; argument != NULL; argument = argument->next)
5212 size_t n_outputs = 0;
5213 argument = statement->outputs;
5214 for ( ; argument != NULL; argument = argument->next)
5217 unsigned next_pos = 0;
5219 ir_node *ins[n_inputs + n_outputs + 1];
5222 ir_asm_constraint tmp_in_constraints[n_outputs];
5224 const expression_t *out_exprs[n_outputs];
5225 ir_node *out_addrs[n_outputs];
5226 size_t out_size = 0;
5228 argument = statement->outputs;
5229 for ( ; argument != NULL; argument = argument->next) {
5230 const char *constraints = argument->constraints.begin;
5231 asm_constraint_flags_t asm_flags
5232 = be_parse_asm_constraints(constraints);
5234 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5235 warningf(&statement->base.source_position,
5236 "some constraints in '%s' are not supported", constraints);
5238 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5239 errorf(&statement->base.source_position,
5240 "some constraints in '%s' are invalid", constraints);
5243 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
5244 errorf(&statement->base.source_position,
5245 "no write flag specified for output constraints '%s'",
5250 unsigned pos = next_pos++;
5251 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5252 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5253 expression_t *expr = argument->expression;
5254 ir_node *addr = expression_to_addr(expr);
5255 /* in+output, construct an artifical same_as constraint on the
5257 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
5259 ir_node *value = get_value_from_lvalue(expr, addr);
5261 snprintf(buf, sizeof(buf), "%u", pos);
5263 ir_asm_constraint constraint;
5264 constraint.pos = pos;
5265 constraint.constraint = new_id_from_str(buf);
5266 constraint.mode = get_ir_mode_storage(expr->base.type);
5267 tmp_in_constraints[in_size] = constraint;
5268 ins[in_size] = value;
5273 out_exprs[out_size] = expr;
5274 out_addrs[out_size] = addr;
5276 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5277 /* pure memory ops need no input (but we have to make sure we
5278 * attach to the memory) */
5279 assert(! (asm_flags &
5280 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5281 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5282 needs_memory = true;
5284 /* we need to attach the address to the inputs */
5285 expression_t *expr = argument->expression;
5287 ir_asm_constraint constraint;
5288 constraint.pos = pos;
5289 constraint.constraint = new_id_from_str(constraints);
5290 constraint.mode = NULL;
5291 tmp_in_constraints[in_size] = constraint;
5293 ins[in_size] = expression_to_addr(expr);
5297 errorf(&statement->base.source_position,
5298 "only modifiers but no place set in constraints '%s'",
5303 ir_asm_constraint constraint;
5304 constraint.pos = pos;
5305 constraint.constraint = new_id_from_str(constraints);
5306 constraint.mode = get_ir_mode_storage(argument->expression->base.type);
5308 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5310 assert(obstack_object_size(&asm_obst)
5311 == out_size * sizeof(ir_asm_constraint));
5312 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
5315 obstack_grow(&asm_obst, tmp_in_constraints,
5316 in_size * sizeof(tmp_in_constraints[0]));
5317 /* find and count input and output arguments */
5318 argument = statement->inputs;
5319 for ( ; argument != NULL; argument = argument->next) {
5320 const char *constraints = argument->constraints.begin;
5321 asm_constraint_flags_t asm_flags
5322 = be_parse_asm_constraints(constraints);
5324 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5325 errorf(&statement->base.source_position,
5326 "some constraints in '%s' are not supported", constraints);
5329 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5330 errorf(&statement->base.source_position,
5331 "some constraints in '%s' are invalid", constraints);
5334 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
5335 errorf(&statement->base.source_position,
5336 "write flag specified for input constraints '%s'",
5342 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5343 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5344 /* we can treat this as "normal" input */
5345 input = expression_to_firm(argument->expression);
5346 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5347 /* pure memory ops need no input (but we have to make sure we
5348 * attach to the memory) */
5349 assert(! (asm_flags &
5350 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5351 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5352 needs_memory = true;
5353 input = expression_to_addr(argument->expression);
5355 errorf(&statement->base.source_position,
5356 "only modifiers but no place set in constraints '%s'",
5361 ir_asm_constraint constraint;
5362 constraint.pos = next_pos++;
5363 constraint.constraint = new_id_from_str(constraints);
5364 constraint.mode = get_irn_mode(input);
5366 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5367 ins[in_size++] = input;
5371 ir_asm_constraint constraint;
5372 constraint.pos = next_pos++;
5373 constraint.constraint = new_id_from_str("");
5374 constraint.mode = mode_M;
5376 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5377 ins[in_size++] = get_store();
5380 assert(obstack_object_size(&asm_obst)
5381 == in_size * sizeof(ir_asm_constraint));
5382 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
5384 /* create asm node */
5385 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5387 ident *asm_text = new_id_from_str(statement->asm_text.begin);
5389 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
5390 out_size, output_constraints,
5391 n_clobbers, clobbers, asm_text);
5393 if (statement->is_volatile) {
5394 set_irn_pinned(node, op_pin_state_pinned);
5396 set_irn_pinned(node, op_pin_state_floats);
5399 /* create output projs & connect them */
5401 ir_node *projm = new_Proj(node, mode_M, out_size+1);
5406 for (i = 0; i < out_size; ++i) {
5407 const expression_t *out_expr = out_exprs[i];
5409 ir_mode *mode = get_ir_mode_storage(out_expr->base.type);
5410 ir_node *proj = new_Proj(node, mode, pn);
5411 ir_node *addr = out_addrs[i];
5413 set_value_for_expression_addr(out_expr, proj, addr);
5417 static void ms_try_statement_to_firm(ms_try_statement_t *statement)
5419 statement_to_firm(statement->try_statement);
5420 warningf(&statement->base.source_position, "structured exception handling ignored");
5423 static void leave_statement_to_firm(leave_statement_t *statement)
5425 errorf(&statement->base.source_position, "__leave not supported yet");
5429 * Transform a statement.
5431 static void statement_to_firm(statement_t *statement)
5434 assert(!statement->base.transformed);
5435 statement->base.transformed = true;
5438 switch (statement->kind) {
5439 case STATEMENT_INVALID:
5440 panic("invalid statement found");
5441 case STATEMENT_EMPTY:
5444 case STATEMENT_COMPOUND:
5445 compound_statement_to_firm(&statement->compound);
5447 case STATEMENT_RETURN:
5448 return_statement_to_firm(&statement->returns);
5450 case STATEMENT_EXPRESSION:
5451 expression_statement_to_firm(&statement->expression);
5454 if_statement_to_firm(&statement->ifs);
5456 case STATEMENT_WHILE:
5457 while_statement_to_firm(&statement->whiles);
5459 case STATEMENT_DO_WHILE:
5460 do_while_statement_to_firm(&statement->do_while);
5462 case STATEMENT_DECLARATION:
5463 declaration_statement_to_firm(&statement->declaration);
5465 case STATEMENT_BREAK:
5466 create_jump_statement(statement, get_break_label());
5468 case STATEMENT_CONTINUE:
5469 create_jump_statement(statement, continue_label);
5471 case STATEMENT_SWITCH:
5472 switch_statement_to_firm(&statement->switchs);
5474 case STATEMENT_CASE_LABEL:
5475 case_label_to_firm(&statement->case_label);
5478 for_statement_to_firm(&statement->fors);
5480 case STATEMENT_LABEL:
5481 label_to_firm(&statement->label);
5483 case STATEMENT_GOTO:
5484 goto_to_firm(&statement->gotos);
5487 asm_statement_to_firm(&statement->asms);
5489 case STATEMENT_MS_TRY:
5490 ms_try_statement_to_firm(&statement->ms_try);
5492 case STATEMENT_LEAVE:
5493 leave_statement_to_firm(&statement->leave);
5496 panic("statement not implemented");
5499 static int count_local_variables(const entity_t *entity,
5500 const entity_t *const last)
5503 entity_t const *const end = last != NULL ? last->base.next : NULL;
5504 for (; entity != end; entity = entity->base.next) {
5508 if (entity->kind == ENTITY_VARIABLE) {
5509 type = skip_typeref(entity->declaration.type);
5510 address_taken = entity->variable.address_taken;
5511 } else if (entity->kind == ENTITY_PARAMETER) {
5512 type = skip_typeref(entity->declaration.type);
5513 address_taken = entity->parameter.address_taken;
5518 if (!address_taken && is_type_scalar(type))
5524 static void count_local_variables_in_stmt(statement_t *stmt, void *const env)
5526 int *const count = env;
5528 switch (stmt->kind) {
5529 case STATEMENT_DECLARATION: {
5530 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5531 *count += count_local_variables(decl_stmt->declarations_begin,
5532 decl_stmt->declarations_end);
5537 *count += count_local_variables(stmt->fors.scope.entities, NULL);
5546 * Return the number of local (alias free) variables used by a function.
5548 static int get_function_n_local_vars(entity_t *entity)
5550 const function_t *function = &entity->function;
5553 /* count parameters */
5554 count += count_local_variables(function->parameters.entities, NULL);
5556 /* count local variables declared in body */
5557 walk_statements(function->statement, count_local_variables_in_stmt, &count);
5562 * Build Firm code for the parameters of a function.
5564 static void initialize_function_parameters(entity_t *entity)
5566 assert(entity->kind == ENTITY_FUNCTION);
5567 ir_graph *irg = current_ir_graph;
5568 ir_node *args = get_irg_args(irg);
5569 ir_node *start_block = get_irg_start_block(irg);
5570 ir_type *function_irtype = get_ir_type(entity->declaration.type);
5571 int first_param_nr = 0;
5573 if (entity->function.need_closure) {
5574 /* add an extra parameter for the static link */
5575 entity->function.static_link = new_r_Proj(irg, start_block, args, mode_P_data, 0);
5580 entity_t *parameter = entity->function.parameters.entities;
5581 for ( ; parameter != NULL; parameter = parameter->base.next, ++n) {
5582 if (parameter->kind != ENTITY_PARAMETER)
5585 assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN);
5586 type_t *type = skip_typeref(parameter->declaration.type);
5588 bool needs_entity = parameter->parameter.address_taken;
5589 assert(!is_type_array(type));
5590 if (is_type_compound(type)) {
5591 needs_entity = true;
5595 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5596 ident *id = new_id_from_str(parameter->base.symbol->string);
5597 set_entity_ident(entity, id);
5599 parameter->declaration.kind
5600 = DECLARATION_KIND_PARAMETER_ENTITY;
5601 parameter->parameter.v.entity = entity;
5605 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5606 ir_mode *param_mode = get_type_mode(param_irtype);
5608 long pn = n + first_param_nr;
5609 ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
5611 ir_mode *mode = get_ir_mode_storage(type);
5612 value = create_conv(NULL, value, mode);
5613 value = do_strict_conv(NULL, value);
5615 parameter->declaration.kind = DECLARATION_KIND_PARAMETER;
5616 parameter->parameter.v.value_number = next_value_number_function;
5617 set_irg_loc_description(current_ir_graph, next_value_number_function,
5619 ++next_value_number_function;
5621 set_value(parameter->parameter.v.value_number, value);
5626 * Handle additional decl modifiers for IR-graphs
5628 * @param irg the IR-graph
5629 * @param dec_modifiers additional modifiers
5631 static void handle_decl_modifier_irg(ir_graph_ptr irg,
5632 decl_modifiers_t decl_modifiers)
5634 if (decl_modifiers & DM_RETURNS_TWICE) {
5635 /* TRUE if the declaration includes __attribute__((returns_twice)) */
5636 set_irg_additional_property(irg, mtp_property_returns_twice);
5638 if (decl_modifiers & DM_NORETURN) {
5639 /* TRUE if the declaration includes the Microsoft
5640 __declspec(noreturn) specifier. */
5641 set_irg_additional_property(irg, mtp_property_noreturn);
5643 if (decl_modifiers & DM_NOTHROW) {
5644 /* TRUE if the declaration includes the Microsoft
5645 __declspec(nothrow) specifier. */
5646 set_irg_additional_property(irg, mtp_property_nothrow);
5648 if (decl_modifiers & DM_NAKED) {
5649 /* TRUE if the declaration includes the Microsoft
5650 __declspec(naked) specifier. */
5651 set_irg_additional_property(irg, mtp_property_naked);
5653 if (decl_modifiers & DM_FORCEINLINE) {
5654 /* TRUE if the declaration includes the
5655 Microsoft __forceinline specifier. */
5656 set_irg_inline_property(irg, irg_inline_forced);
5658 if (decl_modifiers & DM_NOINLINE) {
5659 /* TRUE if the declaration includes the Microsoft
5660 __declspec(noinline) specifier. */
5661 set_irg_inline_property(irg, irg_inline_forbidden);
5665 static void add_function_pointer(ir_type *segment, ir_entity *method,
5666 const char *unique_template)
5668 ir_type *method_type = get_entity_type(method);
5669 ident *id = id_unique(unique_template);
5670 ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code);
5672 ident *ide = id_unique(unique_template);
5673 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5674 ir_graph *irg = get_const_code_irg();
5675 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5678 set_entity_compiler_generated(ptr, 1);
5679 set_entity_variability(ptr, variability_constant);
5680 set_atomic_ent_value(ptr, val);
5684 * Generate possible IJmp branches to a given label block.
5686 static void gen_ijmp_branches(ir_node *block)
5689 for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) {
5690 add_immBlock_pred(block, ijmp);
5695 * Create code for a function and all inner functions.
5697 * @param entity the function entity
5699 static void create_function(entity_t *entity)
5701 assert(entity->kind == ENTITY_FUNCTION);
5702 ir_entity *function_entity = get_function_entity(entity, current_outer_frame);
5704 if (entity->function.statement == NULL)
5707 if (is_main(entity) && firm_opt.os_support == OS_SUPPORT_MINGW) {
5708 prepare_main_collect2(entity);
5711 inner_functions = NULL;
5712 current_trampolines = NULL;
5714 if (entity->declaration.modifiers & DM_CONSTRUCTOR) {
5715 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5716 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5718 if (entity->declaration.modifiers & DM_DESTRUCTOR) {
5719 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5720 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5723 current_function_entity = entity;
5724 current_function_name = NULL;
5725 current_funcsig = NULL;
5727 assert(all_labels == NULL);
5728 all_labels = NEW_ARR_F(label_t *, 0);
5731 int n_local_vars = get_function_n_local_vars(entity);
5732 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5734 ir_graph *old_current_function = current_function;
5735 current_function = irg;
5737 set_irg_fp_model(irg, firm_opt.fp_model);
5738 tarval_enable_fp_ops(1);
5739 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5741 ir_node *first_block = get_cur_block();
5743 /* set inline flags */
5744 if (entity->function.is_inline)
5745 set_irg_inline_property(irg, irg_inline_recomended);
5746 handle_decl_modifier_irg(irg, entity->declaration.modifiers);
5748 next_value_number_function = 0;
5749 initialize_function_parameters(entity);
5750 current_static_link = entity->function.static_link;
5752 statement_to_firm(entity->function.statement);
5754 ir_node *end_block = get_irg_end_block(irg);
5756 /* do we have a return statement yet? */
5757 if (get_cur_block() != NULL) {
5758 type_t *type = skip_typeref(entity->declaration.type);
5759 assert(is_type_function(type));
5760 const function_type_t *func_type = &type->function;
5761 const type_t *return_type
5762 = skip_typeref(func_type->return_type);
5765 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5766 ret = new_Return(get_store(), 0, NULL);
5769 if (is_type_scalar(return_type)) {
5770 mode = get_ir_mode_storage(func_type->return_type);
5776 /* ยง5.1.2.2.3 main implicitly returns 0 */
5777 if (is_main(entity)) {
5778 in[0] = new_Const(get_mode_null(mode));
5780 in[0] = new_Unknown(mode);
5782 ret = new_Return(get_store(), 1, in);
5784 add_immBlock_pred(end_block, ret);
5787 bool has_computed_gotos = false;
5788 for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
5789 label_t *label = all_labels[i];
5790 if (label->address_taken) {
5791 gen_ijmp_branches(label->block);
5792 has_computed_gotos = true;
5794 mature_immBlock(label->block);
5796 if (has_computed_gotos) {
5797 /* if we have computed goto's in the function, we cannot inline it */
5798 if (get_irg_inline_property(irg) >= irg_inline_recomended) {
5799 warningf(&entity->base.source_position,
5800 "function '%Y' can never be inlined because it contains a computed goto",
5801 entity->base.symbol);
5803 set_irg_inline_property(irg, irg_inline_forbidden);
5806 DEL_ARR_F(all_labels);
5809 mature_immBlock(first_block);
5810 mature_immBlock(end_block);
5812 irg_finalize_cons(irg);
5814 /* finalize the frame type */
5815 ir_type *frame_type = get_irg_frame_type(irg);
5816 int n = get_compound_n_members(frame_type);
5819 for (int i = 0; i < n; ++i) {
5820 ir_entity *entity = get_compound_member(frame_type, i);
5821 ir_type *entity_type = get_entity_type(entity);
5823 int align = get_type_alignment_bytes(entity_type);
5824 if (align > align_all)
5828 misalign = offset % align;
5830 offset += align - misalign;
5834 set_entity_offset(entity, offset);
5835 offset += get_type_size_bytes(entity_type);
5837 set_type_size_bytes(frame_type, offset);
5838 set_type_alignment_bytes(frame_type, align_all);
5841 current_function = old_current_function;
5843 if (current_trampolines != NULL) {
5844 DEL_ARR_F(current_trampolines);
5845 current_trampolines = NULL;
5848 /* create inner functions if any */
5849 entity_t **inner = inner_functions;
5850 if (inner != NULL) {
5851 ir_type *rem_outer_frame = current_outer_frame;
5852 current_outer_frame = get_irg_frame_type(current_ir_graph);
5853 ir_type *rem_outer_value_type = current_outer_value_type;
5854 current_outer_value_type = get_irg_value_param_type(current_ir_graph);
5855 for (int i = ARR_LEN(inner) - 1; i >= 0; --i) {
5856 create_function(inner[i]);
5860 current_outer_value_type = rem_outer_value_type;
5861 current_outer_frame = rem_outer_frame;
5865 static void scope_to_firm(scope_t *scope)
5867 /* first pass: create declarations */
5868 entity_t *entity = scope->entities;
5869 for ( ; entity != NULL; entity = entity->base.next) {
5870 if (entity->base.symbol == NULL)
5873 if (entity->kind == ENTITY_FUNCTION) {
5874 if (entity->function.btk != bk_none) {
5875 /* builtins have no representation */
5878 (void)get_function_entity(entity, NULL);
5879 } else if (entity->kind == ENTITY_VARIABLE) {
5880 create_global_variable(entity);
5884 /* second pass: create code/initializers */
5885 entity = scope->entities;
5886 for ( ; entity != NULL; entity = entity->base.next) {
5887 if (entity->base.symbol == NULL)
5890 if (entity->kind == ENTITY_FUNCTION) {
5891 if (entity->function.btk != bk_none) {
5892 /* builtins have no representation */
5895 create_function(entity);
5896 } else if (entity->kind == ENTITY_VARIABLE) {
5897 assert(entity->declaration.kind
5898 == DECLARATION_KIND_GLOBAL_VARIABLE);
5899 current_ir_graph = get_const_code_irg();
5900 create_variable_initializer(entity);
5905 void init_ast2firm(void)
5907 obstack_init(&asm_obst);
5908 init_atomic_modes();
5910 /* OS option must be set to the backend */
5911 switch (firm_opt.os_support) {
5912 case OS_SUPPORT_MINGW:
5913 create_ld_ident = create_name_win32;
5915 case OS_SUPPORT_LINUX:
5916 create_ld_ident = create_name_linux_elf;
5918 case OS_SUPPORT_MACHO:
5919 create_ld_ident = create_name_macho;
5922 panic("unexpected OS support mode");
5925 /* create idents for all known runtime functions */
5926 for (size_t i = 0; i < lengthof(rts_data); ++i) {
5927 rts_idents[i] = new_id_from_str(rts_data[i].name);
5930 entitymap_init(&entitymap);
5933 static void init_ir_types(void)
5935 static int ir_types_initialized = 0;
5936 if (ir_types_initialized)
5938 ir_types_initialized = 1;
5940 ir_type_int = get_ir_type(type_int);
5941 ir_type_char = get_ir_type(type_char);
5942 ir_type_const_char = get_ir_type(type_const_char);
5943 ir_type_wchar_t = get_ir_type(type_wchar_t);
5944 ir_type_void = get_ir_type(type_void);
5946 be_params = be_get_backend_param();
5947 mode_float_arithmetic = be_params->mode_float_arithmetic;
5949 stack_param_align = be_params->stack_param_align;
5952 void exit_ast2firm(void)
5954 entitymap_destroy(&entitymap);
5955 obstack_free(&asm_obst, NULL);
5958 static void global_asm_to_firm(statement_t *s)
5960 for (; s != NULL; s = s->base.next) {
5961 assert(s->kind == STATEMENT_ASM);
5963 char const *const text = s->asms.asm_text.begin;
5964 size_t size = s->asms.asm_text.size;
5966 /* skip the last \0 */
5967 if (text[size - 1] == '\0')
5970 ident *const id = new_id_from_chars(text, size);
5975 void translation_unit_to_firm(translation_unit_t *unit)
5977 /* just to be sure */
5978 continue_label = NULL;
5980 current_switch_cond = NULL;
5981 current_translation_unit = unit;
5985 scope_to_firm(&unit->scope);
5986 global_asm_to_firm(unit->global_asm);
5988 current_ir_graph = NULL;
5989 current_translation_unit = NULL;