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.entity != NULL) {
938 return entity->function.entity;
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.entity = 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.entity);
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.entity);
1495 /* need trampoline here */
1496 return create_trampoline(dbgi, mode, entity->function.entity);
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.entity);
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.entity);
1577 /* need trampoline here */
1578 return create_trampoline(dbgi, mode, entity->function.entity);
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 (ref->entity->kind == ENTITY_FUNCTION &&
1857 ref->entity->function.btk != bk_none) {
1858 return process_builtin_call(call);
1861 if (entity->kind == ENTITY_FUNCTION
1862 && entity->function.entity == rts_entities[rts_alloca]) {
1863 /* handle alloca() call */
1864 expression_t *argument = call->arguments->expression;
1865 ir_node *size = expression_to_firm(argument);
1866 ir_mode *mode = get_ir_mode_arithmetic(type_size_t);
1868 size = create_conv(dbgi, size, mode);
1870 ir_node *store = get_store();
1871 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1873 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1875 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1880 ir_node *callee = expression_to_firm(function);
1882 type_t *type = skip_typeref(function->base.type);
1883 assert(is_type_pointer(type));
1884 pointer_type_t *pointer_type = &type->pointer;
1885 type_t *points_to = skip_typeref(pointer_type->points_to);
1886 assert(is_type_function(points_to));
1887 function_type_t *function_type = &points_to->function;
1889 int n_parameters = 0;
1890 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1891 ir_type *new_method_type = NULL;
1892 if (function_type->variadic || function_type->unspecified_parameters) {
1893 const call_argument_t *argument = call->arguments;
1894 for ( ; argument != NULL; argument = argument->next) {
1898 /* we need to construct a new method type matching the call
1900 int n_res = get_method_n_ress(ir_method_type);
1901 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1902 n_parameters, n_res, dbgi);
1903 set_method_calling_convention(new_method_type,
1904 get_method_calling_convention(ir_method_type));
1905 set_method_additional_properties(new_method_type,
1906 get_method_additional_properties(ir_method_type));
1907 set_method_variadicity(new_method_type,
1908 get_method_variadicity(ir_method_type));
1910 for (int i = 0; i < n_res; ++i) {
1911 set_method_res_type(new_method_type, i,
1912 get_method_res_type(ir_method_type, i));
1914 argument = call->arguments;
1915 for (int i = 0; i < n_parameters; ++i, argument = argument->next) {
1916 expression_t *expression = argument->expression;
1917 ir_type *irtype = get_ir_type(expression->base.type);
1918 set_method_param_type(new_method_type, i, irtype);
1920 ir_method_type = new_method_type;
1922 n_parameters = get_method_n_params(ir_method_type);
1925 ir_node *in[n_parameters];
1927 const call_argument_t *argument = call->arguments;
1928 for (int n = 0; n < n_parameters; ++n) {
1929 expression_t *expression = argument->expression;
1930 ir_node *arg_node = expression_to_firm(expression);
1932 type_t *type = skip_typeref(expression->base.type);
1933 if (!is_type_compound(type)) {
1934 ir_mode *mode = get_ir_mode_storage(expression->base.type);
1935 arg_node = create_conv(dbgi, arg_node, mode);
1936 arg_node = do_strict_conv(dbgi, arg_node);
1941 argument = argument->next;
1944 ir_node *store = get_store();
1945 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1947 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1950 type_t *return_type = skip_typeref(function_type->return_type);
1951 ir_node *result = NULL;
1953 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1954 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1956 if (is_type_scalar(return_type)) {
1957 ir_mode *mode = get_ir_mode_storage(return_type);
1958 result = new_d_Proj(dbgi, resproj, mode, 0);
1959 ir_mode *mode_arith = get_ir_mode_arithmetic(return_type);
1960 result = create_conv(NULL, result, mode_arith);
1962 ir_mode *mode = mode_P_data;
1963 result = new_d_Proj(dbgi, resproj, mode, 0);
1967 if (function->kind == EXPR_REFERENCE &&
1968 function->reference.entity->declaration.modifiers & DM_NORETURN) {
1969 /* A dead end: Keep the Call and the Block. Also place all further
1970 * nodes into a new and unreachable block. */
1972 keep_alive(get_cur_block());
1979 static void statement_to_firm(statement_t *statement);
1980 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1982 static ir_node *expression_to_addr(const expression_t *expression);
1983 static ir_node *create_condition_evaluation(const expression_t *expression,
1984 ir_node *true_block,
1985 ir_node *false_block);
1987 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1990 if (!is_type_compound(type)) {
1991 ir_mode *mode = get_ir_mode_storage(type);
1992 value = create_conv(dbgi, value, mode);
1993 value = do_strict_conv(dbgi, value);
1996 ir_node *memory = get_store();
1998 if (is_type_scalar(type)) {
1999 ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
2000 ? cons_volatile : cons_none;
2001 ir_node *store = new_d_Store(dbgi, memory, addr, value, flags);
2002 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
2003 set_store(store_mem);
2005 ir_type *irtype = get_ir_type(type);
2006 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
2007 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
2008 set_store(copyb_mem);
2012 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
2014 tarval *all_one = get_mode_all_one(mode);
2015 int mode_size = get_mode_size_bits(mode);
2017 assert(offset >= 0);
2019 assert(offset + size <= mode_size);
2020 if (size == mode_size) {
2024 long shiftr = get_mode_size_bits(mode) - size;
2025 long shiftl = offset;
2026 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
2027 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
2028 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
2029 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
2034 static ir_node *bitfield_store_to_firm(dbg_info *dbgi,
2035 ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile)
2037 ir_type *entity_type = get_entity_type(entity);
2038 ir_type *base_type = get_primitive_base_type(entity_type);
2039 assert(base_type != NULL);
2040 ir_mode *mode = get_type_mode(base_type);
2042 value = create_conv(dbgi, value, mode);
2044 /* kill upper bits of value and shift to right position */
2045 int bitoffset = get_entity_offset_bits_remainder(entity);
2046 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
2048 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
2049 ir_node *mask_node = new_d_Const(dbgi, mask);
2050 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
2051 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
2052 ir_node *shiftcount = new_d_Const(dbgi, shiftl);
2053 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
2055 /* load current value */
2056 ir_node *mem = get_store();
2057 ir_node *load = new_d_Load(dbgi, mem, addr, mode,
2058 set_volatile ? cons_volatile : cons_none);
2059 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
2060 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
2061 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
2062 tarval *inv_mask = tarval_not(shift_mask);
2063 ir_node *inv_mask_node = new_d_Const(dbgi, inv_mask);
2064 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
2066 /* construct new value and store */
2067 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
2068 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val,
2069 set_volatile ? cons_volatile : cons_none);
2070 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
2071 set_store(store_mem);
2073 return value_masked;
2076 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
2079 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2080 type_t *type = expression->base.type;
2081 ir_mode *mode = get_ir_mode_storage(type);
2082 ir_node *mem = get_store();
2083 ir_node *load = new_d_Load(dbgi, mem, addr, mode, cons_none);
2084 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
2085 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
2087 load_res = create_conv(dbgi, load_res, mode_int);
2089 set_store(load_mem);
2091 /* kill upper bits */
2092 assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER);
2093 ir_entity *entity = expression->compound_entry->compound_member.entity;
2094 int bitoffset = get_entity_offset_bits_remainder(entity);
2095 ir_type *entity_type = get_entity_type(entity);
2096 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
2097 long shift_bitsl = machine_size - bitoffset - bitsize;
2098 assert(shift_bitsl >= 0);
2099 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
2100 ir_node *countl = new_d_Const(dbgi, tvl);
2101 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
2103 long shift_bitsr = bitoffset + shift_bitsl;
2104 assert(shift_bitsr <= (long) machine_size);
2105 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
2106 ir_node *countr = new_d_Const(dbgi, tvr);
2108 if (mode_is_signed(mode)) {
2109 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
2111 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
2114 return create_conv(dbgi, shiftr, mode);
2117 /* make sure the selected compound type is constructed */
2118 static void construct_select_compound(const select_expression_t *expression)
2120 type_t *type = skip_typeref(expression->compound->base.type);
2121 if (is_type_pointer(type)) {
2122 type = type->pointer.points_to;
2124 (void) get_ir_type(type);
2127 static ir_node *set_value_for_expression_addr(const expression_t *expression,
2128 ir_node *value, ir_node *addr)
2130 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2131 type_t *type = skip_typeref(expression->base.type);
2133 if (!is_type_compound(type)) {
2134 ir_mode *mode = get_ir_mode_storage(type);
2135 value = create_conv(dbgi, value, mode);
2136 value = do_strict_conv(dbgi, value);
2139 if (expression->kind == EXPR_REFERENCE) {
2140 const reference_expression_t *ref = &expression->reference;
2142 entity_t *entity = ref->entity;
2143 assert(is_declaration(entity));
2144 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2145 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2146 set_value(entity->variable.v.value_number, value);
2148 } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2149 set_value(entity->parameter.v.value_number, value);
2155 addr = expression_to_addr(expression);
2156 assert(addr != NULL);
2158 if (expression->kind == EXPR_SELECT) {
2159 const select_expression_t *select = &expression->select;
2161 construct_select_compound(select);
2163 entity_t *entity = select->compound_entry;
2164 assert(entity->kind == ENTITY_COMPOUND_MEMBER);
2165 if (entity->declaration.type->kind == TYPE_BITFIELD) {
2166 ir_entity *irentity = entity->compound_member.entity;
2168 = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
2169 value = bitfield_store_to_firm(dbgi, irentity, addr, value,
2175 assign_value(dbgi, addr, type, value);
2179 static void set_value_for_expression(const expression_t *expression,
2182 set_value_for_expression_addr(expression, value, NULL);
2185 static ir_node *get_value_from_lvalue(const expression_t *expression,
2188 if (expression->kind == EXPR_REFERENCE) {
2189 const reference_expression_t *ref = &expression->reference;
2191 entity_t *entity = ref->entity;
2192 assert(entity->kind == ENTITY_VARIABLE
2193 || entity->kind == ENTITY_PARAMETER);
2194 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2196 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2197 value_number = entity->variable.v.value_number;
2198 assert(addr == NULL);
2199 type_t *type = skip_typeref(expression->base.type);
2200 ir_mode *mode = get_ir_mode_storage(type);
2201 ir_node *res = get_value(value_number, mode);
2202 return create_conv(NULL, res, get_ir_mode_arithmetic(type));
2203 } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2204 value_number = entity->parameter.v.value_number;
2205 assert(addr == NULL);
2206 type_t *type = skip_typeref(expression->base.type);
2207 ir_mode *mode = get_ir_mode_storage(type);
2208 ir_node *res = get_value(value_number, mode);
2209 return create_conv(NULL, res, get_ir_mode_arithmetic(type));
2213 assert(addr != NULL);
2214 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2217 if (expression->kind == EXPR_SELECT &&
2218 expression->select.compound_entry->declaration.type->kind == TYPE_BITFIELD){
2219 construct_select_compound(&expression->select);
2220 value = bitfield_extract_to_firm(&expression->select, addr);
2222 value = deref_address(dbgi, expression->base.type, addr);
2229 static ir_node *create_incdec(const unary_expression_t *expression)
2231 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2232 const expression_t *value_expr = expression->value;
2233 ir_node *addr = expression_to_addr(value_expr);
2234 ir_node *value = get_value_from_lvalue(value_expr, addr);
2236 type_t *type = skip_typeref(expression->base.type);
2237 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2240 if (is_type_pointer(type)) {
2241 pointer_type_t *pointer_type = &type->pointer;
2242 offset = get_type_size_node(pointer_type->points_to);
2244 assert(is_type_arithmetic(type));
2245 offset = new_Const(get_mode_one(mode));
2249 ir_node *store_value;
2250 switch(expression->base.kind) {
2251 case EXPR_UNARY_POSTFIX_INCREMENT:
2253 store_value = new_d_Add(dbgi, value, offset, mode);
2255 case EXPR_UNARY_POSTFIX_DECREMENT:
2257 store_value = new_d_Sub(dbgi, value, offset, mode);
2259 case EXPR_UNARY_PREFIX_INCREMENT:
2260 result = new_d_Add(dbgi, value, offset, mode);
2261 store_value = result;
2263 case EXPR_UNARY_PREFIX_DECREMENT:
2264 result = new_d_Sub(dbgi, value, offset, mode);
2265 store_value = result;
2268 panic("no incdec expr in create_incdec");
2271 set_value_for_expression_addr(value_expr, store_value, addr);
2276 static bool is_local_variable(expression_t *expression)
2278 if (expression->kind != EXPR_REFERENCE)
2280 reference_expression_t *ref_expr = &expression->reference;
2281 entity_t *entity = ref_expr->entity;
2282 if (entity->kind != ENTITY_VARIABLE)
2284 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2285 return entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE;
2288 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
2291 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
2292 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
2293 case EXPR_BINARY_NOTEQUAL:
2294 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
2295 case EXPR_BINARY_ISLESS:
2296 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
2297 case EXPR_BINARY_ISLESSEQUAL:
2298 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
2299 case EXPR_BINARY_ISGREATER:
2300 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
2301 case EXPR_BINARY_ISGREATEREQUAL:
2302 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
2303 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
2308 panic("trying to get pn_Cmp from non-comparison binexpr type");
2312 * Handle the assume optimizer hint: check if a Confirm
2313 * node can be created.
2315 * @param dbi debug info
2316 * @param expr the IL assume expression
2318 * we support here only some simple cases:
2323 static ir_node *handle_assume_compare(dbg_info *dbi,
2324 const binary_expression_t *expression)
2326 expression_t *op1 = expression->left;
2327 expression_t *op2 = expression->right;
2328 entity_t *var2, *var = NULL;
2329 ir_node *res = NULL;
2332 cmp_val = get_pnc(expression->base.kind, op1->base.type);
2334 if (is_local_variable(op1) && is_local_variable(op2)) {
2335 var = op1->reference.entity;
2336 var2 = op2->reference.entity;
2338 type_t *const type = skip_typeref(var->declaration.type);
2339 ir_mode *const mode = get_ir_mode_storage(type);
2341 ir_node *const irn1 = get_value(var->variable.v.value_number, mode);
2342 ir_node *const irn2 = get_value(var2->variable.v.value_number, mode);
2344 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
2345 set_value(var2->variable.v.value_number, res);
2347 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
2348 set_value(var->variable.v.value_number, res);
2354 if (is_local_variable(op1) && is_constant_expression(op2)) {
2355 var = op1->reference.entity;
2357 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2358 cmp_val = get_inversed_pnc(cmp_val);
2359 var = op2->reference.entity;
2364 type_t *const type = skip_typeref(var->declaration.type);
2365 ir_mode *const mode = get_ir_mode_storage(type);
2367 res = get_value(var->variable.v.value_number, mode);
2368 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2369 set_value(var->variable.v.value_number, res);
2375 * Handle the assume optimizer hint.
2377 * @param dbi debug info
2378 * @param expr the IL assume expression
2380 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression)
2382 switch(expression->kind) {
2383 case EXPR_BINARY_EQUAL:
2384 case EXPR_BINARY_NOTEQUAL:
2385 case EXPR_BINARY_LESS:
2386 case EXPR_BINARY_LESSEQUAL:
2387 case EXPR_BINARY_GREATER:
2388 case EXPR_BINARY_GREATEREQUAL:
2389 return handle_assume_compare(dbi, &expression->binary);
2395 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2397 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2398 type_t *type = skip_typeref(expression->base.type);
2400 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2401 return expression_to_addr(expression->value);
2403 const expression_t *value = expression->value;
2405 switch(expression->base.kind) {
2406 case EXPR_UNARY_NEGATE: {
2407 ir_node *value_node = expression_to_firm(value);
2408 ir_mode *mode = get_ir_mode_arithmetic(type);
2409 return new_d_Minus(dbgi, value_node, mode);
2411 case EXPR_UNARY_PLUS:
2412 return expression_to_firm(value);
2413 case EXPR_UNARY_BITWISE_NEGATE: {
2414 ir_node *value_node = expression_to_firm(value);
2415 ir_mode *mode = get_ir_mode_arithmetic(type);
2416 return new_d_Not(dbgi, value_node, mode);
2418 case EXPR_UNARY_NOT: {
2419 ir_node *value_node = _expression_to_firm(value);
2420 value_node = create_conv(dbgi, value_node, mode_b);
2421 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2424 case EXPR_UNARY_DEREFERENCE: {
2425 ir_node *value_node = expression_to_firm(value);
2426 type_t *value_type = skip_typeref(value->base.type);
2427 assert(is_type_pointer(value_type));
2429 /* check for __based */
2430 const variable_t *const base_var = value_type->pointer.base_variable;
2431 if (base_var != NULL) {
2432 ir_node *const addr = get_global_var_address(dbgi, base_var);
2433 ir_node *const base = deref_address(dbgi, base_var->base.type, addr);
2434 value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(value_type));
2436 type_t *points_to = value_type->pointer.points_to;
2437 return deref_address(dbgi, points_to, value_node);
2439 case EXPR_UNARY_POSTFIX_INCREMENT:
2440 case EXPR_UNARY_POSTFIX_DECREMENT:
2441 case EXPR_UNARY_PREFIX_INCREMENT:
2442 case EXPR_UNARY_PREFIX_DECREMENT:
2443 return create_incdec(expression);
2444 case EXPR_UNARY_CAST: {
2445 ir_node *value_node = expression_to_firm(value);
2446 if (is_type_scalar(type)) {
2447 ir_mode *mode = get_ir_mode_storage(type);
2448 type_t *from_type = skip_typeref(value->base.type);
2449 /* check for conversion from / to __based types */
2450 if (is_type_pointer(type) && is_type_pointer(from_type)) {
2451 const variable_t *from_var = from_type->pointer.base_variable;
2452 const variable_t *to_var = type->pointer.base_variable;
2453 if (from_var != to_var) {
2454 if (from_var != NULL) {
2455 ir_node *const addr = get_global_var_address(dbgi, from_var);
2456 ir_node *const base = deref_address(dbgi, from_var->base.type, addr);
2457 value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(from_type));
2459 if (to_var != NULL) {
2460 ir_node *const addr = get_global_var_address(dbgi, to_var);
2461 ir_node *const base = deref_address(dbgi, to_var->base.type, addr);
2462 value_node = new_d_Sub(dbgi, value_node, base, mode);
2466 ir_node *node = create_conv(dbgi, value_node, mode);
2467 node = do_strict_conv(dbgi, node);
2468 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
2469 node = create_conv(dbgi, node, mode_arith);
2472 /* make sure firm type is constructed */
2473 (void) get_ir_type(type);
2477 case EXPR_UNARY_CAST_IMPLICIT: {
2478 ir_node *value_node = expression_to_firm(value);
2479 if (is_type_scalar(type)) {
2480 ir_mode *mode = get_ir_mode_storage(type);
2481 ir_node *res = create_conv(dbgi, value_node, mode);
2482 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
2483 res = create_conv(dbgi, res, mode_arith);
2489 case EXPR_UNARY_ASSUME:
2490 if (firm_opt.confirm)
2491 return handle_assume(dbgi, value);
2498 panic("invalid UNEXPR type found");
2502 * produces a 0/1 depending of the value of a mode_b node
2504 static ir_node *produce_condition_result(const expression_t *expression,
2505 ir_mode *mode, dbg_info *dbgi)
2507 ir_node *cur_block = get_cur_block();
2509 ir_node *one_block = new_immBlock();
2510 set_cur_block(one_block);
2511 ir_node *one = new_Const(get_mode_one(mode));
2512 ir_node *jmp_one = new_d_Jmp(dbgi);
2514 ir_node *zero_block = new_immBlock();
2515 set_cur_block(zero_block);
2516 ir_node *zero = new_Const(get_mode_null(mode));
2517 ir_node *jmp_zero = new_d_Jmp(dbgi);
2519 set_cur_block(cur_block);
2520 create_condition_evaluation(expression, one_block, zero_block);
2521 mature_immBlock(one_block);
2522 mature_immBlock(zero_block);
2524 ir_node *in_cf[2] = { jmp_one, jmp_zero };
2525 new_Block(2, in_cf);
2527 ir_node *in[2] = { one, zero };
2528 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2533 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2534 ir_node *value, type_t *type)
2536 ir_mode *const mode = get_ir_mode_arithmetic(type_ptrdiff_t);
2537 assert(is_type_pointer(type));
2538 pointer_type_t *const pointer_type = &type->pointer;
2539 type_t *const points_to = skip_typeref(pointer_type->points_to);
2540 ir_node * elem_size = get_type_size_node(points_to);
2541 elem_size = create_conv(dbgi, elem_size, mode);
2542 value = create_conv(dbgi, value, mode);
2543 ir_node *const mul = new_d_Mul(dbgi, value, elem_size, mode);
2547 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2548 ir_node *left, ir_node *right)
2551 type_t *type_left = skip_typeref(expression->left->base.type);
2552 type_t *type_right = skip_typeref(expression->right->base.type);
2554 expression_kind_t kind = expression->base.kind;
2557 case EXPR_BINARY_SHIFTLEFT:
2558 case EXPR_BINARY_SHIFTRIGHT:
2559 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2560 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2561 mode = get_irn_mode(left);
2562 right = create_conv(dbgi, right, mode_uint);
2565 case EXPR_BINARY_SUB:
2566 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2567 const pointer_type_t *const ptr_type = &type_left->pointer;
2569 mode = get_ir_mode_arithmetic(expression->base.type);
2570 ir_node *const elem_size = get_type_size_node(ptr_type->points_to);
2571 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2572 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2573 ir_node *const no_mem = new_NoMem();
2574 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2575 mode, op_pin_state_floats);
2576 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2579 case EXPR_BINARY_SUB_ASSIGN:
2580 if (is_type_pointer(type_left)) {
2581 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2582 mode = get_ir_mode_arithmetic(type_left);
2587 case EXPR_BINARY_ADD:
2588 case EXPR_BINARY_ADD_ASSIGN:
2589 if (is_type_pointer(type_left)) {
2590 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2591 mode = get_ir_mode_arithmetic(type_left);
2593 } else if (is_type_pointer(type_right)) {
2594 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2595 mode = get_ir_mode_arithmetic(type_right);
2602 mode = get_ir_mode_arithmetic(type_right);
2603 left = create_conv(dbgi, left, mode);
2608 case EXPR_BINARY_ADD_ASSIGN:
2609 case EXPR_BINARY_ADD:
2610 return new_d_Add(dbgi, left, right, mode);
2611 case EXPR_BINARY_SUB_ASSIGN:
2612 case EXPR_BINARY_SUB:
2613 return new_d_Sub(dbgi, left, right, mode);
2614 case EXPR_BINARY_MUL_ASSIGN:
2615 case EXPR_BINARY_MUL:
2616 return new_d_Mul(dbgi, left, right, mode);
2617 case EXPR_BINARY_BITWISE_AND:
2618 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2619 return new_d_And(dbgi, left, right, mode);
2620 case EXPR_BINARY_BITWISE_OR:
2621 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2622 return new_d_Or(dbgi, left, right, mode);
2623 case EXPR_BINARY_BITWISE_XOR:
2624 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2625 return new_d_Eor(dbgi, left, right, mode);
2626 case EXPR_BINARY_SHIFTLEFT:
2627 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2628 return new_d_Shl(dbgi, left, right, mode);
2629 case EXPR_BINARY_SHIFTRIGHT:
2630 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2631 if (mode_is_signed(mode)) {
2632 return new_d_Shrs(dbgi, left, right, mode);
2634 return new_d_Shr(dbgi, left, right, mode);
2636 case EXPR_BINARY_DIV:
2637 case EXPR_BINARY_DIV_ASSIGN: {
2638 ir_node *pin = new_Pin(new_NoMem());
2641 if (mode_is_float(mode)) {
2642 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2643 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2645 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2646 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2650 case EXPR_BINARY_MOD:
2651 case EXPR_BINARY_MOD_ASSIGN: {
2652 ir_node *pin = new_Pin(new_NoMem());
2653 assert(!mode_is_float(mode));
2654 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2655 op_pin_state_floats);
2656 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2660 panic("unexpected expression kind");
2664 static ir_node *create_lazy_op(const binary_expression_t *expression)
2666 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2667 type_t *type = skip_typeref(expression->base.type);
2668 ir_mode *mode = get_ir_mode_arithmetic(type);
2670 if (is_constant_expression(expression->left)) {
2671 bool val = fold_constant_to_bool(expression->left);
2672 expression_kind_t ekind = expression->base.kind;
2673 assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
2674 if (ekind == EXPR_BINARY_LOGICAL_AND) {
2676 return new_Const(get_mode_null(mode));
2680 return new_Const(get_mode_one(mode));
2684 if (is_constant_expression(expression->right)) {
2685 bool valr = fold_constant_to_bool(expression->right);
2687 new_Const(get_mode_one(mode)) :
2688 new_Const(get_mode_null(mode));
2691 return produce_condition_result(expression->right, mode, dbgi);
2694 return produce_condition_result((const expression_t*) expression, mode,
2698 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2699 ir_node *right, ir_mode *mode);
2701 static ir_node *create_assign_binop(const binary_expression_t *expression)
2703 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2704 const expression_t *left_expr = expression->left;
2705 type_t *type = skip_typeref(left_expr->base.type);
2706 ir_mode *left_mode = get_ir_mode_storage(type);
2707 ir_node *right = expression_to_firm(expression->right);
2708 ir_node *left_addr = expression_to_addr(left_expr);
2709 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2710 ir_node *result = create_op(dbgi, expression, left, right);
2712 result = create_conv(dbgi, result, left_mode);
2713 result = do_strict_conv(dbgi, result);
2715 result = set_value_for_expression_addr(left_expr, result, left_addr);
2717 if (!is_type_compound(type)) {
2718 ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
2719 result = create_conv(dbgi, result, mode_arithmetic);
2724 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2726 expression_kind_t kind = expression->base.kind;
2729 case EXPR_BINARY_EQUAL:
2730 case EXPR_BINARY_NOTEQUAL:
2731 case EXPR_BINARY_LESS:
2732 case EXPR_BINARY_LESSEQUAL:
2733 case EXPR_BINARY_GREATER:
2734 case EXPR_BINARY_GREATEREQUAL:
2735 case EXPR_BINARY_ISGREATER:
2736 case EXPR_BINARY_ISGREATEREQUAL:
2737 case EXPR_BINARY_ISLESS:
2738 case EXPR_BINARY_ISLESSEQUAL:
2739 case EXPR_BINARY_ISLESSGREATER:
2740 case EXPR_BINARY_ISUNORDERED: {
2741 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2742 ir_node *left = expression_to_firm(expression->left);
2743 ir_node *right = expression_to_firm(expression->right);
2744 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2745 long pnc = get_pnc(kind, expression->left->base.type);
2746 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2749 case EXPR_BINARY_ASSIGN: {
2750 ir_node *addr = expression_to_addr(expression->left);
2751 ir_node *right = expression_to_firm(expression->right);
2753 = set_value_for_expression_addr(expression->left, right, addr);
2755 type_t *type = skip_typeref(expression->base.type);
2756 if (!is_type_compound(type)) {
2757 ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
2758 res = create_conv(NULL, res, mode_arithmetic);
2762 case EXPR_BINARY_ADD:
2763 case EXPR_BINARY_SUB:
2764 case EXPR_BINARY_MUL:
2765 case EXPR_BINARY_DIV:
2766 case EXPR_BINARY_MOD:
2767 case EXPR_BINARY_BITWISE_AND:
2768 case EXPR_BINARY_BITWISE_OR:
2769 case EXPR_BINARY_BITWISE_XOR:
2770 case EXPR_BINARY_SHIFTLEFT:
2771 case EXPR_BINARY_SHIFTRIGHT:
2773 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2774 ir_node *left = expression_to_firm(expression->left);
2775 ir_node *right = expression_to_firm(expression->right);
2776 return create_op(dbgi, expression, left, right);
2778 case EXPR_BINARY_LOGICAL_AND:
2779 case EXPR_BINARY_LOGICAL_OR:
2780 return create_lazy_op(expression);
2781 case EXPR_BINARY_COMMA:
2782 /* create side effects of left side */
2783 (void) expression_to_firm(expression->left);
2784 return _expression_to_firm(expression->right);
2786 case EXPR_BINARY_ADD_ASSIGN:
2787 case EXPR_BINARY_SUB_ASSIGN:
2788 case EXPR_BINARY_MUL_ASSIGN:
2789 case EXPR_BINARY_MOD_ASSIGN:
2790 case EXPR_BINARY_DIV_ASSIGN:
2791 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2792 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2793 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2794 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2795 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2796 return create_assign_binop(expression);
2798 panic("TODO binexpr type");
2802 static ir_node *array_access_addr(const array_access_expression_t *expression)
2804 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2805 ir_node *base_addr = expression_to_firm(expression->array_ref);
2806 ir_node *offset = expression_to_firm(expression->index);
2807 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2808 ir_node *real_offset = adjust_for_pointer_arithmetic(dbgi, offset, ref_type);
2809 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2814 static ir_node *array_access_to_firm(
2815 const array_access_expression_t *expression)
2817 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2818 ir_node *addr = array_access_addr(expression);
2819 type_t *type = revert_automatic_type_conversion(
2820 (const expression_t*) expression);
2821 type = skip_typeref(type);
2823 return deref_address(dbgi, type, addr);
2826 static long get_offsetof_offset(const offsetof_expression_t *expression)
2828 type_t *orig_type = expression->type;
2831 designator_t *designator = expression->designator;
2832 for ( ; designator != NULL; designator = designator->next) {
2833 type_t *type = skip_typeref(orig_type);
2834 /* be sure the type is constructed */
2835 (void) get_ir_type(type);
2837 if (designator->symbol != NULL) {
2838 assert(is_type_compound(type));
2839 symbol_t *symbol = designator->symbol;
2841 compound_t *compound = type->compound.compound;
2842 entity_t *iter = compound->members.entities;
2843 for ( ; iter != NULL; iter = iter->base.next) {
2844 if (iter->base.symbol == symbol) {
2848 assert(iter != NULL);
2850 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
2851 assert(iter->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2852 offset += get_entity_offset(iter->compound_member.entity);
2854 orig_type = iter->declaration.type;
2856 expression_t *array_index = designator->array_index;
2857 assert(designator->array_index != NULL);
2858 assert(is_type_array(type));
2860 long index = fold_constant_to_int(array_index);
2861 ir_type *arr_type = get_ir_type(type);
2862 ir_type *elem_type = get_array_element_type(arr_type);
2863 long elem_size = get_type_size_bytes(elem_type);
2865 offset += index * elem_size;
2867 orig_type = type->array.element_type;
2874 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2876 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2877 long offset = get_offsetof_offset(expression);
2878 tarval *tv = new_tarval_from_long(offset, mode);
2879 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2881 return new_d_Const(dbgi, tv);
2884 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2885 ir_entity *entity, type_t *type);
2887 static ir_node *compound_literal_to_firm(
2888 const compound_literal_expression_t *expression)
2890 type_t *type = expression->type;
2892 /* create an entity on the stack */
2893 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2895 ident *const id = id_unique("CompLit.%u");
2896 ir_type *const irtype = get_ir_type(type);
2897 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2898 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2899 set_entity_ld_ident(entity, id);
2901 set_entity_variability(entity, variability_uninitialized);
2903 /* create initialisation code */
2904 initializer_t *initializer = expression->initializer;
2905 create_local_initializer(initializer, dbgi, entity, type);
2907 /* create a sel for the compound literal address */
2908 ir_node *frame = get_irg_frame(current_ir_graph);
2909 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2914 * Transform a sizeof expression into Firm code.
2916 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2918 type_t *type = expression->type;
2920 type = expression->tp_expression->base.type;
2921 assert(type != NULL);
2924 type = skip_typeref(type);
2925 /* ยง6.5.3.4:2 if the type is a VLA, evaluate the expression. */
2926 if (is_type_array(type) && type->array.is_vla
2927 && expression->tp_expression != NULL) {
2928 expression_to_firm(expression->tp_expression);
2931 return get_type_size_node(type);
2934 static entity_t *get_expression_entity(const expression_t *expression)
2936 if (expression->kind != EXPR_REFERENCE)
2939 return expression->reference.entity;
2942 static unsigned get_cparser_entity_alignment(const entity_t *entity)
2944 switch(entity->kind) {
2945 DECLARATION_KIND_CASES
2946 return entity->declaration.alignment;
2949 return entity->compound.alignment;
2950 case ENTITY_TYPEDEF:
2951 return entity->typedefe.alignment;
2959 * Transform an alignof expression into Firm code.
2961 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2963 unsigned alignment = 0;
2965 const expression_t *tp_expression = expression->tp_expression;
2966 if (tp_expression != NULL) {
2967 entity_t *entity = get_expression_entity(tp_expression);
2968 if (entity != NULL) {
2969 alignment = get_cparser_entity_alignment(entity);
2973 if (alignment == 0) {
2974 type_t *type = expression->type;
2975 alignment = get_type_alignment(type);
2978 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2979 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2980 tarval *tv = new_tarval_from_long(alignment, mode);
2981 return new_d_Const(dbgi, tv);
2984 static void init_ir_types(void);
2986 static tarval *fold_constant_to_tarval(const expression_t *expression)
2988 assert(is_type_valid(skip_typeref(expression->base.type)));
2990 bool constant_folding_old = constant_folding;
2991 constant_folding = true;
2995 assert(is_constant_expression(expression));
2997 ir_graph *old_current_ir_graph = current_ir_graph;
2998 current_ir_graph = get_const_code_irg();
3000 ir_node *cnst = expression_to_firm(expression);
3001 current_ir_graph = old_current_ir_graph;
3003 if (!is_Const(cnst)) {
3004 panic("couldn't fold constant");
3007 constant_folding = constant_folding_old;
3009 tarval *tv = get_Const_tarval(cnst);
3013 long fold_constant_to_int(const expression_t *expression)
3015 if (expression->kind == EXPR_INVALID)
3018 tarval *tv = fold_constant_to_tarval(expression);
3019 if (!tarval_is_long(tv)) {
3020 panic("result of constant folding is not integer");
3023 return get_tarval_long(tv);
3026 bool fold_constant_to_bool(const expression_t *expression)
3028 if (expression->kind == EXPR_INVALID)
3030 tarval *tv = fold_constant_to_tarval(expression);
3031 return !tarval_is_null(tv);
3034 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
3036 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
3038 /* first try to fold a constant condition */
3039 if (is_constant_expression(expression->condition)) {
3040 bool val = fold_constant_to_bool(expression->condition);
3042 expression_t *true_expression = expression->true_expression;
3043 if (true_expression == NULL)
3044 true_expression = expression->condition;
3045 return expression_to_firm(true_expression);
3047 return expression_to_firm(expression->false_expression);
3051 ir_node *cur_block = get_cur_block();
3053 /* create the true block */
3054 ir_node *true_block = new_immBlock();
3055 set_cur_block(true_block);
3057 ir_node *true_val = expression->true_expression != NULL ?
3058 expression_to_firm(expression->true_expression) : NULL;
3059 ir_node *true_jmp = new_Jmp();
3061 /* create the false block */
3062 ir_node *false_block = new_immBlock();
3063 set_cur_block(false_block);
3065 ir_node *false_val = expression_to_firm(expression->false_expression);
3066 ir_node *false_jmp = new_Jmp();
3068 /* create the condition evaluation */
3069 set_cur_block(cur_block);
3070 ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
3071 if (expression->true_expression == NULL) {
3072 if (cond_expr != NULL && get_irn_mode(cond_expr) != mode_b) {
3073 true_val = cond_expr;
3075 /* Condition ended with a short circuit (&&, ||, !) operation or a
3076 * comparison. Generate a "1" as value for the true branch. */
3077 true_val = new_Const(get_mode_one(mode_Is));
3080 mature_immBlock(true_block);
3081 mature_immBlock(false_block);
3083 /* create the common block */
3084 ir_node *in_cf[2] = { true_jmp, false_jmp };
3085 new_Block(2, in_cf);
3087 /* TODO improve static semantics, so either both or no values are NULL */
3088 if (true_val == NULL || false_val == NULL)
3091 ir_node *in[2] = { true_val, false_val };
3092 ir_mode *mode = get_irn_mode(true_val);
3093 assert(get_irn_mode(false_val) == mode);
3094 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
3100 * Returns an IR-node representing the address of a field.
3102 static ir_node *select_addr(const select_expression_t *expression)
3104 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3106 construct_select_compound(expression);
3108 ir_node *compound_addr = expression_to_firm(expression->compound);
3110 entity_t *entry = expression->compound_entry;
3111 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3112 assert(entry->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
3114 if (constant_folding) {
3115 ir_mode *mode = get_irn_mode(compound_addr);
3116 /* FIXME: here, we need an integer mode with the same number of bits as mode */
3117 ir_node *ofs = new_Const_long(mode_uint, entry->compound_member.offset);
3118 return new_d_Add(dbgi, compound_addr, ofs, mode);
3120 ir_entity *irentity = entry->compound_member.entity;
3121 assert(irentity != NULL);
3122 return new_d_simpleSel(dbgi, new_NoMem(), compound_addr, irentity);
3126 static ir_node *select_to_firm(const select_expression_t *expression)
3128 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3129 ir_node *addr = select_addr(expression);
3130 type_t *type = revert_automatic_type_conversion(
3131 (const expression_t*) expression);
3132 type = skip_typeref(type);
3134 entity_t *entry = expression->compound_entry;
3135 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3136 type_t *entry_type = skip_typeref(entry->declaration.type);
3138 if (entry_type->kind == TYPE_BITFIELD) {
3139 return bitfield_extract_to_firm(expression, addr);
3142 return deref_address(dbgi, type, addr);
3145 /* Values returned by __builtin_classify_type. */
3146 typedef enum gcc_type_class
3152 enumeral_type_class,
3155 reference_type_class,
3159 function_type_class,
3170 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
3172 type_t *type = expr->type_expression->base.type;
3174 /* FIXME gcc returns different values depending on whether compiling C or C++
3175 * e.g. int x[10] is pointer_type_class in C, but array_type_class in C++ */
3178 type = skip_typeref(type);
3179 switch (type->kind) {
3181 const atomic_type_t *const atomic_type = &type->atomic;
3182 switch (atomic_type->akind) {
3183 /* should not be reached */
3184 case ATOMIC_TYPE_INVALID:
3188 /* gcc cannot do that */
3189 case ATOMIC_TYPE_VOID:
3190 tc = void_type_class;
3193 case ATOMIC_TYPE_WCHAR_T: /* gcc handles this as integer */
3194 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
3195 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
3196 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
3197 case ATOMIC_TYPE_SHORT:
3198 case ATOMIC_TYPE_USHORT:
3199 case ATOMIC_TYPE_INT:
3200 case ATOMIC_TYPE_UINT:
3201 case ATOMIC_TYPE_LONG:
3202 case ATOMIC_TYPE_ULONG:
3203 case ATOMIC_TYPE_LONGLONG:
3204 case ATOMIC_TYPE_ULONGLONG:
3205 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
3206 tc = integer_type_class;
3209 case ATOMIC_TYPE_FLOAT:
3210 case ATOMIC_TYPE_DOUBLE:
3211 case ATOMIC_TYPE_LONG_DOUBLE:
3212 tc = real_type_class;
3215 panic("Unexpected atomic type in classify_type_to_firm().");
3218 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
3219 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
3220 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
3221 case TYPE_ARRAY: /* gcc handles this as pointer */
3222 case TYPE_FUNCTION: /* gcc handles this as pointer */
3223 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
3224 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
3225 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
3227 /* gcc handles this as integer */
3228 case TYPE_ENUM: tc = integer_type_class; goto make_const;
3230 /* gcc classifies the referenced type */
3231 case TYPE_REFERENCE: type = type->reference.refers_to; continue;
3234 /* typedef/typeof should be skipped already */
3241 panic("unexpected TYPE classify_type_to_firm().");
3245 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3246 tarval *const tv = new_tarval_from_long(tc, mode_int);
3247 return new_d_Const(dbgi, tv);
3250 static ir_node *function_name_to_firm(
3251 const funcname_expression_t *const expr)
3253 switch(expr->kind) {
3254 case FUNCNAME_FUNCTION:
3255 case FUNCNAME_PRETTY_FUNCTION:
3256 case FUNCNAME_FUNCDNAME:
3257 if (current_function_name == NULL) {
3258 const source_position_t *const src_pos = &expr->base.source_position;
3259 const char *name = current_function_entity->base.symbol->string;
3260 const string_t string = { name, strlen(name) + 1 };
3261 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
3263 return current_function_name;
3264 case FUNCNAME_FUNCSIG:
3265 if (current_funcsig == NULL) {
3266 const source_position_t *const src_pos = &expr->base.source_position;
3267 ir_entity *ent = get_irg_entity(current_ir_graph);
3268 const char *const name = get_entity_ld_name(ent);
3269 const string_t string = { name, strlen(name) + 1 };
3270 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
3272 return current_funcsig;
3274 panic("Unsupported function name");
3277 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
3279 statement_t *statement = expr->statement;
3281 assert(statement->kind == STATEMENT_COMPOUND);
3282 return compound_statement_to_firm(&statement->compound);
3285 static ir_node *va_start_expression_to_firm(
3286 const va_start_expression_t *const expr)
3288 type_t *const type = current_function_entity->declaration.type;
3289 ir_type *const method_type = get_ir_type(type);
3290 int const n = get_method_n_params(method_type) - 1;
3291 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
3292 ir_node *const frame = get_irg_frame(current_ir_graph);
3293 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3294 ir_node *const no_mem = new_NoMem();
3295 ir_node *const arg_sel =
3296 new_d_simpleSel(dbgi, no_mem, frame, parm_ent);
3298 type_t *const param_type = expr->parameter->base.type;
3299 ir_node *const cnst = get_type_size_node(param_type);
3300 ir_mode *const mode = get_irn_mode(cnst);
3301 ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
3302 ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
3303 ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align);
3304 ir_node *const c4 = new_d_And(dbgi, c2, c3, mode);
3305 ir_node *const add = new_d_Add(dbgi, arg_sel, c4, mode_P_data);
3306 set_value_for_expression(expr->ap, add);
3311 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
3313 type_t *const type = expr->base.type;
3314 expression_t *const ap_expr = expr->ap;
3315 ir_node *const ap_addr = expression_to_addr(ap_expr);
3316 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
3317 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3318 ir_node *const res = deref_address(dbgi, type, ap);
3320 ir_node *const cnst = get_type_size_node(expr->base.type);
3321 ir_mode *const mode = get_irn_mode(cnst);
3322 ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
3323 ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
3324 ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align);
3325 ir_node *const c4 = new_d_And(dbgi, c2, c3, mode);
3326 ir_node *const add = new_d_Add(dbgi, ap, c4, mode_P_data);
3328 set_value_for_expression_addr(ap_expr, add, ap_addr);
3334 * Generate Firm for a va_copy expression.
3336 static ir_node *va_copy_expression_to_firm(const va_copy_expression_t *const expr)
3338 ir_node *const src = expression_to_firm(expr->src);
3339 set_value_for_expression(expr->dst, src);
3343 static ir_node *dereference_addr(const unary_expression_t *const expression)
3345 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
3346 return expression_to_firm(expression->value);
3350 * Returns a IR-node representing an lvalue of the given expression.
3352 static ir_node *expression_to_addr(const expression_t *expression)
3354 switch(expression->kind) {
3355 case EXPR_ARRAY_ACCESS:
3356 return array_access_addr(&expression->array_access);
3358 return call_expression_to_firm(&expression->call);
3359 case EXPR_COMPOUND_LITERAL:
3360 return compound_literal_to_firm(&expression->compound_literal);
3361 case EXPR_REFERENCE:
3362 return reference_addr(&expression->reference);
3364 return select_addr(&expression->select);
3365 case EXPR_UNARY_DEREFERENCE:
3366 return dereference_addr(&expression->unary);
3370 panic("trying to get address of non-lvalue");
3373 static ir_node *builtin_constant_to_firm(
3374 const builtin_constant_expression_t *expression)
3376 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3379 if (is_constant_expression(expression->value)) {
3384 return new_Const_long(mode, v);
3387 static ir_node *builtin_types_compatible_to_firm(
3388 const builtin_types_compatible_expression_t *expression)
3390 type_t *const left = get_unqualified_type(skip_typeref(expression->left));
3391 type_t *const right = get_unqualified_type(skip_typeref(expression->right));
3392 long const value = types_compatible(left, right) ? 1 : 0;
3393 ir_mode *const mode = get_ir_mode_arithmetic(expression->base.type);
3394 return new_Const_long(mode, value);
3397 static ir_node *get_label_block(label_t *label)
3399 if (label->block != NULL)
3400 return label->block;
3402 /* beware: might be called from create initializer with current_ir_graph
3403 * set to const_code_irg. */
3404 ir_graph *rem = current_ir_graph;
3405 current_ir_graph = current_function;
3407 ir_node *block = new_immBlock();
3409 label->block = block;
3411 ARR_APP1(label_t *, all_labels, label);
3413 current_ir_graph = rem;
3418 * Pointer to a label. This is used for the
3419 * GNU address-of-label extension.
3421 static ir_node *label_address_to_firm(
3422 const label_address_expression_t *label)
3424 ir_node *block = get_label_block(label->label);
3425 ir_label_t nr = get_Block_label(block);
3428 nr = get_irp_next_label_nr();
3429 set_Block_label(block, nr);
3431 symconst_symbol value;
3433 return new_SymConst(mode_P_code, value, symconst_label);
3437 * creates firm nodes for an expression. The difference between this function
3438 * and expression_to_firm is, that this version might produce mode_b nodes
3439 * instead of mode_Is.
3441 static ir_node *_expression_to_firm(const expression_t *expression)
3444 if (!constant_folding) {
3445 assert(!expression->base.transformed);
3446 ((expression_t*) expression)->base.transformed = true;
3450 switch (expression->kind) {
3451 case EXPR_CHARACTER_CONSTANT:
3452 return character_constant_to_firm(&expression->conste);
3453 case EXPR_WIDE_CHARACTER_CONSTANT:
3454 return wide_character_constant_to_firm(&expression->conste);
3456 return const_to_firm(&expression->conste);
3457 case EXPR_STRING_LITERAL:
3458 return string_literal_to_firm(&expression->string);
3459 case EXPR_WIDE_STRING_LITERAL:
3460 return wide_string_literal_to_firm(&expression->wide_string);
3461 case EXPR_REFERENCE:
3462 return reference_expression_to_firm(&expression->reference);
3463 case EXPR_REFERENCE_ENUM_VALUE:
3464 return reference_expression_enum_value_to_firm(&expression->reference);
3466 return call_expression_to_firm(&expression->call);
3468 return unary_expression_to_firm(&expression->unary);
3470 return binary_expression_to_firm(&expression->binary);
3471 case EXPR_ARRAY_ACCESS:
3472 return array_access_to_firm(&expression->array_access);
3474 return sizeof_to_firm(&expression->typeprop);
3476 return alignof_to_firm(&expression->typeprop);
3477 case EXPR_CONDITIONAL:
3478 return conditional_to_firm(&expression->conditional);
3480 return select_to_firm(&expression->select);
3481 case EXPR_CLASSIFY_TYPE:
3482 return classify_type_to_firm(&expression->classify_type);
3484 return function_name_to_firm(&expression->funcname);
3485 case EXPR_STATEMENT:
3486 return statement_expression_to_firm(&expression->statement);
3488 return va_start_expression_to_firm(&expression->va_starte);
3490 return va_arg_expression_to_firm(&expression->va_arge);
3492 return va_copy_expression_to_firm(&expression->va_copye);
3493 case EXPR_BUILTIN_CONSTANT_P:
3494 return builtin_constant_to_firm(&expression->builtin_constant);
3495 case EXPR_BUILTIN_TYPES_COMPATIBLE_P:
3496 return builtin_types_compatible_to_firm(&expression->builtin_types_compatible);
3498 return offsetof_to_firm(&expression->offsetofe);
3499 case EXPR_COMPOUND_LITERAL:
3500 return compound_literal_to_firm(&expression->compound_literal);
3501 case EXPR_LABEL_ADDRESS:
3502 return label_address_to_firm(&expression->label_address);
3508 panic("invalid expression found");
3512 * Check if a given expression is a GNU __builtin_expect() call.
3514 static bool is_builtin_expect(const expression_t *expression)
3516 if (expression->kind != EXPR_CALL)
3519 expression_t *function = expression->call.function;
3520 if (function->kind != EXPR_REFERENCE)
3522 reference_expression_t *ref = &function->reference;
3523 if (ref->entity->kind != ENTITY_FUNCTION ||
3524 ref->entity->function.btk != bk_gnu_builtin_expect)
3530 static bool produces_mode_b(const expression_t *expression)
3532 switch (expression->kind) {
3533 case EXPR_BINARY_EQUAL:
3534 case EXPR_BINARY_NOTEQUAL:
3535 case EXPR_BINARY_LESS:
3536 case EXPR_BINARY_LESSEQUAL:
3537 case EXPR_BINARY_GREATER:
3538 case EXPR_BINARY_GREATEREQUAL:
3539 case EXPR_BINARY_ISGREATER:
3540 case EXPR_BINARY_ISGREATEREQUAL:
3541 case EXPR_BINARY_ISLESS:
3542 case EXPR_BINARY_ISLESSEQUAL:
3543 case EXPR_BINARY_ISLESSGREATER:
3544 case EXPR_BINARY_ISUNORDERED:
3545 case EXPR_UNARY_NOT:
3549 if (is_builtin_expect(expression)) {
3550 expression_t *argument = expression->call.arguments->expression;
3551 return produces_mode_b(argument);
3554 case EXPR_BINARY_COMMA:
3555 return produces_mode_b(expression->binary.right);
3562 static ir_node *expression_to_firm(const expression_t *expression)
3564 if (!produces_mode_b(expression)) {
3565 ir_node *res = _expression_to_firm(expression);
3566 assert(res == NULL || get_irn_mode(res) != mode_b);
3570 if (is_constant_expression(expression)) {
3571 ir_node *res = _expression_to_firm(expression);
3572 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3573 assert(is_Const(res));
3574 if (is_Const_null(res)) {
3575 return new_Const_long(mode, 0);
3577 return new_Const_long(mode, 1);
3581 /* we have to produce a 0/1 from the mode_b expression */
3582 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3583 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3584 return produce_condition_result(expression, mode, dbgi);
3588 * create a short-circuit expression evaluation that tries to construct
3589 * efficient control flow structures for &&, || and ! expressions
3591 static ir_node *create_condition_evaluation(const expression_t *expression,
3592 ir_node *true_block,
3593 ir_node *false_block)
3595 switch(expression->kind) {
3596 case EXPR_UNARY_NOT: {
3597 const unary_expression_t *unary_expression = &expression->unary;
3598 create_condition_evaluation(unary_expression->value, false_block,
3602 case EXPR_BINARY_LOGICAL_AND: {
3603 const binary_expression_t *binary_expression = &expression->binary;
3605 ir_node *extra_block = new_immBlock();
3606 create_condition_evaluation(binary_expression->left, extra_block,
3608 mature_immBlock(extra_block);
3609 set_cur_block(extra_block);
3610 create_condition_evaluation(binary_expression->right, true_block,
3614 case EXPR_BINARY_LOGICAL_OR: {
3615 const binary_expression_t *binary_expression = &expression->binary;
3617 ir_node *extra_block = new_immBlock();
3618 create_condition_evaluation(binary_expression->left, true_block,
3620 mature_immBlock(extra_block);
3621 set_cur_block(extra_block);
3622 create_condition_evaluation(binary_expression->right, true_block,
3630 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3631 ir_node *cond_expr = _expression_to_firm(expression);
3632 ir_node *condition = create_conv(dbgi, cond_expr, mode_b);
3633 ir_node *cond = new_d_Cond(dbgi, condition);
3634 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3635 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3637 /* set branch prediction info based on __builtin_expect */
3638 if (is_builtin_expect(expression) && is_Cond(cond)) {
3639 call_argument_t *argument = expression->call.arguments->next;
3640 if (is_constant_expression(argument->expression)) {
3641 bool cnst = fold_constant_to_bool(argument->expression);
3642 cond_jmp_predicate pred;
3644 if (cnst == false) {
3645 pred = COND_JMP_PRED_FALSE;
3647 pred = COND_JMP_PRED_TRUE;
3649 set_Cond_jmp_pred(cond, pred);
3653 add_immBlock_pred(true_block, true_proj);
3654 add_immBlock_pred(false_block, false_proj);
3656 set_cur_block(NULL);
3660 static void create_variable_entity(entity_t *variable,
3661 declaration_kind_t declaration_kind,
3662 ir_type *parent_type)
3664 assert(variable->kind == ENTITY_VARIABLE);
3665 type_t *type = skip_typeref(variable->declaration.type);
3667 ident *const id = new_id_from_str(variable->base.symbol->string);
3668 ir_type *const irtype = get_ir_type(type);
3669 dbg_info *const dbgi = get_dbg_info(&variable->base.source_position);
3670 ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi);
3671 unsigned alignment = variable->declaration.alignment;
3673 set_entity_alignment(irentity, alignment);
3675 handle_decl_modifiers(irentity, variable);
3677 variable->declaration.kind = (unsigned char) declaration_kind;
3678 variable->variable.v.entity = irentity;
3679 set_entity_variability(irentity, variability_uninitialized);
3680 set_entity_ld_ident(irentity, create_ld_ident(variable));
3682 if (parent_type == get_tls_type())
3683 set_entity_allocation(irentity, allocation_automatic);
3684 else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3685 set_entity_allocation(irentity, allocation_static);
3687 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3688 set_entity_volatility(irentity, volatility_is_volatile);
3693 typedef struct type_path_entry_t type_path_entry_t;
3694 struct type_path_entry_t {
3696 ir_initializer_t *initializer;
3698 entity_t *compound_entry;
3701 typedef struct type_path_t type_path_t;
3702 struct type_path_t {
3703 type_path_entry_t *path;
3708 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3710 size_t len = ARR_LEN(path->path);
3712 for (size_t i = 0; i < len; ++i) {
3713 const type_path_entry_t *entry = & path->path[i];
3715 type_t *type = skip_typeref(entry->type);
3716 if (is_type_compound(type)) {
3717 fprintf(stderr, ".%s", entry->compound_entry->base.symbol->string);
3718 } else if (is_type_array(type)) {
3719 fprintf(stderr, "[%u]", (unsigned) entry->index);
3721 fprintf(stderr, "-INVALID-");
3724 fprintf(stderr, " (");
3725 print_type(path->top_type);
3726 fprintf(stderr, ")");
3729 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3731 size_t len = ARR_LEN(path->path);
3733 return & path->path[len-1];
3736 static type_path_entry_t *append_to_type_path(type_path_t *path)
3738 size_t len = ARR_LEN(path->path);
3739 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3741 type_path_entry_t *result = & path->path[len];
3742 memset(result, 0, sizeof(result[0]));
3746 static size_t get_compound_member_count(const compound_type_t *type)
3748 compound_t *compound = type->compound;
3749 size_t n_members = 0;
3750 entity_t *member = compound->members.entities;
3751 for ( ; member != NULL; member = member->base.next) {
3758 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3760 type_t *orig_top_type = path->top_type;
3761 type_t *top_type = skip_typeref(orig_top_type);
3763 assert(is_type_compound(top_type) || is_type_array(top_type));
3765 if (ARR_LEN(path->path) == 0) {
3768 type_path_entry_t *top = get_type_path_top(path);
3769 ir_initializer_t *initializer = top->initializer;
3770 return get_initializer_compound_value(initializer, top->index);
3774 static void descend_into_subtype(type_path_t *path)
3776 type_t *orig_top_type = path->top_type;
3777 type_t *top_type = skip_typeref(orig_top_type);
3779 assert(is_type_compound(top_type) || is_type_array(top_type));
3781 ir_initializer_t *initializer = get_initializer_entry(path);
3783 type_path_entry_t *top = append_to_type_path(path);
3784 top->type = top_type;
3788 if (is_type_compound(top_type)) {
3789 compound_t *compound = top_type->compound.compound;
3790 entity_t *entry = compound->members.entities;
3792 top->compound_entry = entry;
3794 len = get_compound_member_count(&top_type->compound);
3795 if (entry != NULL) {
3796 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3797 path->top_type = entry->declaration.type;
3800 assert(is_type_array(top_type));
3801 assert(top_type->array.size > 0);
3804 path->top_type = top_type->array.element_type;
3805 len = top_type->array.size;
3807 if (initializer == NULL
3808 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3809 initializer = create_initializer_compound(len);
3810 /* we have to set the entry at the 2nd latest path entry... */
3811 size_t path_len = ARR_LEN(path->path);
3812 assert(path_len >= 1);
3814 type_path_entry_t *entry = & path->path[path_len-2];
3815 ir_initializer_t *tinitializer = entry->initializer;
3816 set_initializer_compound_value(tinitializer, entry->index,
3820 top->initializer = initializer;
3823 static void ascend_from_subtype(type_path_t *path)
3825 type_path_entry_t *top = get_type_path_top(path);
3827 path->top_type = top->type;
3829 size_t len = ARR_LEN(path->path);
3830 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3833 static void walk_designator(type_path_t *path, const designator_t *designator)
3835 /* designators start at current object type */
3836 ARR_RESIZE(type_path_entry_t, path->path, 1);
3838 for ( ; designator != NULL; designator = designator->next) {
3839 type_path_entry_t *top = get_type_path_top(path);
3840 type_t *orig_type = top->type;
3841 type_t *type = skip_typeref(orig_type);
3843 if (designator->symbol != NULL) {
3844 assert(is_type_compound(type));
3846 symbol_t *symbol = designator->symbol;
3848 compound_t *compound = type->compound.compound;
3849 entity_t *iter = compound->members.entities;
3850 for ( ; iter != NULL; iter = iter->base.next, ++index) {
3851 if (iter->base.symbol == symbol) {
3852 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
3856 assert(iter != NULL);
3858 top->type = orig_type;
3859 top->compound_entry = iter;
3861 orig_type = iter->declaration.type;
3863 expression_t *array_index = designator->array_index;
3864 assert(designator->array_index != NULL);
3865 assert(is_type_array(type));
3867 long index = fold_constant_to_int(array_index);
3870 if (type->array.size_constant) {
3871 long array_size = type->array.size;
3872 assert(index < array_size);
3876 top->type = orig_type;
3877 top->index = (size_t) index;
3878 orig_type = type->array.element_type;
3880 path->top_type = orig_type;
3882 if (designator->next != NULL) {
3883 descend_into_subtype(path);
3887 path->invalid = false;
3890 static void advance_current_object(type_path_t *path)
3892 if (path->invalid) {
3893 /* TODO: handle this... */
3894 panic("invalid initializer in ast2firm (excessive elements)");
3897 type_path_entry_t *top = get_type_path_top(path);
3899 type_t *type = skip_typeref(top->type);
3900 if (is_type_union(type)) {
3901 top->compound_entry = NULL;
3902 } else if (is_type_struct(type)) {
3903 entity_t *entry = top->compound_entry;
3906 entry = entry->base.next;
3907 top->compound_entry = entry;
3908 if (entry != NULL) {
3909 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3910 path->top_type = entry->declaration.type;
3914 assert(is_type_array(type));
3917 if (!type->array.size_constant || top->index < type->array.size) {
3922 /* we're past the last member of the current sub-aggregate, try if we
3923 * can ascend in the type hierarchy and continue with another subobject */
3924 size_t len = ARR_LEN(path->path);
3927 ascend_from_subtype(path);
3928 advance_current_object(path);
3930 path->invalid = true;
3935 static ir_initializer_t *create_ir_initializer(
3936 const initializer_t *initializer, type_t *type);
3938 static ir_initializer_t *create_ir_initializer_value(
3939 const initializer_value_t *initializer)
3941 if (is_type_compound(initializer->value->base.type)) {
3942 panic("initializer creation for compounds not implemented yet");
3944 ir_node *value = expression_to_firm(initializer->value);
3945 type_t *type = initializer->value->base.type;
3946 ir_mode *mode = get_ir_mode_storage(type);
3947 value = create_conv(NULL, value, mode);
3948 return create_initializer_const(value);
3951 /** test wether type can be initialized by a string constant */
3952 static bool is_string_type(type_t *type)
3955 if (is_type_pointer(type)) {
3956 inner = skip_typeref(type->pointer.points_to);
3957 } else if(is_type_array(type)) {
3958 inner = skip_typeref(type->array.element_type);
3963 return is_type_integer(inner);
3966 static ir_initializer_t *create_ir_initializer_list(
3967 const initializer_list_t *initializer, type_t *type)
3970 memset(&path, 0, sizeof(path));
3971 path.top_type = type;
3972 path.path = NEW_ARR_F(type_path_entry_t, 0);
3974 descend_into_subtype(&path);
3976 for (size_t i = 0; i < initializer->len; ++i) {
3977 const initializer_t *sub_initializer = initializer->initializers[i];
3979 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3980 walk_designator(&path, sub_initializer->designator.designator);
3984 if (sub_initializer->kind == INITIALIZER_VALUE) {
3985 /* we might have to descend into types until we're at a scalar
3988 type_t *orig_top_type = path.top_type;
3989 type_t *top_type = skip_typeref(orig_top_type);
3991 if (is_type_scalar(top_type))
3993 descend_into_subtype(&path);
3995 } else if (sub_initializer->kind == INITIALIZER_STRING
3996 || sub_initializer->kind == INITIALIZER_WIDE_STRING) {
3997 /* we might have to descend into types until we're at a scalar
4000 type_t *orig_top_type = path.top_type;
4001 type_t *top_type = skip_typeref(orig_top_type);
4003 if (is_string_type(top_type))
4005 descend_into_subtype(&path);
4009 ir_initializer_t *sub_irinitializer
4010 = create_ir_initializer(sub_initializer, path.top_type);
4012 size_t path_len = ARR_LEN(path.path);
4013 assert(path_len >= 1);
4014 type_path_entry_t *entry = & path.path[path_len-1];
4015 ir_initializer_t *tinitializer = entry->initializer;
4016 set_initializer_compound_value(tinitializer, entry->index,
4019 advance_current_object(&path);
4022 assert(ARR_LEN(path.path) >= 1);
4023 ir_initializer_t *result = path.path[0].initializer;
4024 DEL_ARR_F(path.path);
4029 static ir_initializer_t *create_ir_initializer_string(
4030 const initializer_string_t *initializer, type_t *type)
4032 type = skip_typeref(type);
4034 size_t string_len = initializer->string.size;
4035 assert(type->kind == TYPE_ARRAY);
4036 assert(type->array.size_constant);
4037 size_t len = type->array.size;
4038 ir_initializer_t *irinitializer = create_initializer_compound(len);
4040 const char *string = initializer->string.begin;
4041 ir_mode *mode = get_ir_mode_storage(type->array.element_type);
4043 for (size_t i = 0; i < len; ++i) {
4048 tarval *tv = new_tarval_from_long(c, mode);
4049 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
4051 set_initializer_compound_value(irinitializer, i, char_initializer);
4054 return irinitializer;
4057 static ir_initializer_t *create_ir_initializer_wide_string(
4058 const initializer_wide_string_t *initializer, type_t *type)
4060 size_t string_len = initializer->string.size;
4061 assert(type->kind == TYPE_ARRAY);
4062 assert(type->array.size_constant);
4063 size_t len = type->array.size;
4064 ir_initializer_t *irinitializer = create_initializer_compound(len);
4066 const wchar_rep_t *string = initializer->string.begin;
4067 ir_mode *mode = get_type_mode(ir_type_wchar_t);
4069 for (size_t i = 0; i < len; ++i) {
4071 if (i < string_len) {
4074 tarval *tv = new_tarval_from_long(c, mode);
4075 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
4077 set_initializer_compound_value(irinitializer, i, char_initializer);
4080 return irinitializer;
4083 static ir_initializer_t *create_ir_initializer(
4084 const initializer_t *initializer, type_t *type)
4086 switch(initializer->kind) {
4087 case INITIALIZER_STRING:
4088 return create_ir_initializer_string(&initializer->string, type);
4090 case INITIALIZER_WIDE_STRING:
4091 return create_ir_initializer_wide_string(&initializer->wide_string,
4094 case INITIALIZER_LIST:
4095 return create_ir_initializer_list(&initializer->list, type);
4097 case INITIALIZER_VALUE:
4098 return create_ir_initializer_value(&initializer->value);
4100 case INITIALIZER_DESIGNATOR:
4101 panic("unexpected designator initializer found");
4103 panic("unknown initializer");
4106 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
4109 if (is_atomic_type(type)) {
4110 ir_mode *mode = get_type_mode(type);
4111 tarval *zero = get_mode_null(mode);
4112 ir_node *cnst = new_d_Const(dbgi, zero);
4114 /* TODO: bitfields */
4115 ir_node *mem = get_store();
4116 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst, cons_none);
4117 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4120 assert(is_compound_type(type));
4123 if (is_Array_type(type)) {
4124 assert(has_array_upper_bound(type, 0));
4125 n_members = get_array_upper_bound_int(type, 0);
4127 n_members = get_compound_n_members(type);
4130 for (int i = 0; i < n_members; ++i) {
4133 if (is_Array_type(type)) {
4134 ir_entity *entity = get_array_element_entity(type);
4135 tarval *index_tv = new_tarval_from_long(i, mode_uint);
4136 ir_node *cnst = new_d_Const(dbgi, index_tv);
4137 ir_node *in[1] = { cnst };
4138 irtype = get_array_element_type(type);
4139 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
4141 ir_entity *member = get_compound_member(type, i);
4143 irtype = get_entity_type(member);
4144 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
4147 create_dynamic_null_initializer(irtype, dbgi, addr);
4152 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
4153 ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr)
4155 switch(get_initializer_kind(initializer)) {
4156 case IR_INITIALIZER_NULL: {
4157 create_dynamic_null_initializer(type, dbgi, base_addr);
4160 case IR_INITIALIZER_CONST: {
4161 ir_node *node = get_initializer_const_value(initializer);
4162 ir_mode *mode = get_irn_mode(node);
4163 ir_type *ent_type = get_entity_type(entity);
4165 /* is it a bitfield type? */
4166 if (is_Primitive_type(ent_type) &&
4167 get_primitive_base_type(ent_type) != NULL) {
4168 bitfield_store_to_firm(dbgi, entity, base_addr, node, false);
4172 assert(get_type_mode(type) == mode);
4173 ir_node *mem = get_store();
4174 ir_node *store = new_d_Store(dbgi, mem, base_addr, node, cons_none);
4175 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4179 case IR_INITIALIZER_TARVAL: {
4180 tarval *tv = get_initializer_tarval_value(initializer);
4181 ir_mode *mode = get_tarval_mode(tv);
4182 ir_node *cnst = new_d_Const(dbgi, tv);
4183 ir_type *ent_type = get_entity_type(entity);
4185 /* is it a bitfield type? */
4186 if (is_Primitive_type(ent_type) &&
4187 get_primitive_base_type(ent_type) != NULL) {
4188 bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false);
4192 assert(get_type_mode(type) == mode);
4193 ir_node *mem = get_store();
4194 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst, cons_none);
4195 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4199 case IR_INITIALIZER_COMPOUND: {
4200 assert(is_compound_type(type));
4202 if (is_Array_type(type)) {
4203 assert(has_array_upper_bound(type, 0));
4204 n_members = get_array_upper_bound_int(type, 0);
4206 n_members = get_compound_n_members(type);
4209 if (get_initializer_compound_n_entries(initializer)
4210 != (unsigned) n_members)
4211 panic("initializer doesn't match compound type");
4213 for (int i = 0; i < n_members; ++i) {
4216 ir_entity *sub_entity;
4217 if (is_Array_type(type)) {
4218 tarval *index_tv = new_tarval_from_long(i, mode_uint);
4219 ir_node *cnst = new_d_Const(dbgi, index_tv);
4220 ir_node *in[1] = { cnst };
4221 irtype = get_array_element_type(type);
4222 sub_entity = get_array_element_entity(type);
4223 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
4226 sub_entity = get_compound_member(type, i);
4227 irtype = get_entity_type(sub_entity);
4228 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
4232 ir_initializer_t *sub_init
4233 = get_initializer_compound_value(initializer, i);
4235 create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
4242 panic("invalid IR_INITIALIZER found");
4245 static void create_dynamic_initializer(ir_initializer_t *initializer,
4246 dbg_info *dbgi, ir_entity *entity)
4248 ir_node *frame = get_irg_frame(current_ir_graph);
4249 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
4250 ir_type *type = get_entity_type(entity);
4252 create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
4255 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
4256 ir_entity *entity, type_t *type)
4258 ir_node *memory = get_store();
4259 ir_node *nomem = new_NoMem();
4260 ir_node *frame = get_irg_frame(current_ir_graph);
4261 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
4263 if (initializer->kind == INITIALIZER_VALUE) {
4264 initializer_value_t *initializer_value = &initializer->value;
4266 ir_node *value = expression_to_firm(initializer_value->value);
4267 type = skip_typeref(type);
4268 assign_value(dbgi, addr, type, value);
4272 if (!is_constant_initializer(initializer)) {
4273 ir_initializer_t *irinitializer
4274 = create_ir_initializer(initializer, type);
4276 create_dynamic_initializer(irinitializer, dbgi, entity);
4280 /* create the ir_initializer */
4281 ir_graph *const old_current_ir_graph = current_ir_graph;
4282 current_ir_graph = get_const_code_irg();
4284 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
4286 assert(current_ir_graph == get_const_code_irg());
4287 current_ir_graph = old_current_ir_graph;
4289 /* create a "template" entity which is copied to the entity on the stack */
4290 ident *const id = id_unique("initializer.%u");
4291 ir_type *const irtype = get_ir_type(type);
4292 ir_type *const global_type = get_glob_type();
4293 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
4294 set_entity_ld_ident(init_entity, id);
4296 set_entity_variability(init_entity, variability_initialized);
4297 set_entity_visibility(init_entity, visibility_local);
4298 set_entity_allocation(init_entity, allocation_static);
4300 set_entity_initializer(init_entity, irinitializer);
4302 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
4303 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
4305 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
4306 set_store(copyb_mem);
4309 static void create_initializer_local_variable_entity(entity_t *entity)
4311 assert(entity->kind == ENTITY_VARIABLE);
4312 initializer_t *initializer = entity->variable.initializer;
4313 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4314 ir_entity *irentity = entity->variable.v.entity;
4315 type_t *type = entity->declaration.type;
4317 create_local_initializer(initializer, dbgi, irentity, type);
4320 static void create_variable_initializer(entity_t *entity)
4322 assert(entity->kind == ENTITY_VARIABLE);
4323 initializer_t *initializer = entity->variable.initializer;
4324 if (initializer == NULL)
4327 declaration_kind_t declaration_kind
4328 = (declaration_kind_t) entity->declaration.kind;
4329 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
4330 create_initializer_local_variable_entity(entity);
4334 type_t *type = entity->declaration.type;
4335 type_qualifiers_t tq = get_type_qualifier(type, true);
4337 if (initializer->kind == INITIALIZER_VALUE) {
4338 initializer_value_t *initializer_value = &initializer->value;
4339 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4341 ir_node *value = expression_to_firm(initializer_value->value);
4343 type_t *type = initializer_value->value->base.type;
4344 ir_mode *mode = get_ir_mode_storage(type);
4345 value = create_conv(dbgi, value, mode);
4346 value = do_strict_conv(dbgi, value);
4348 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
4349 set_value(entity->variable.v.value_number, value);
4351 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4353 ir_entity *irentity = entity->variable.v.entity;
4355 if (tq & TYPE_QUALIFIER_CONST) {
4356 set_entity_variability(irentity, variability_constant);
4358 set_entity_variability(irentity, variability_initialized);
4360 set_atomic_ent_value(irentity, value);
4363 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
4364 declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4366 ir_entity *irentity = entity->variable.v.entity;
4367 ir_initializer_t *irinitializer
4368 = create_ir_initializer(initializer, type);
4370 if (tq & TYPE_QUALIFIER_CONST) {
4371 set_entity_variability(irentity, variability_constant);
4373 set_entity_variability(irentity, variability_initialized);
4375 set_entity_initializer(irentity, irinitializer);
4379 static void create_variable_length_array(entity_t *entity)
4381 assert(entity->kind == ENTITY_VARIABLE);
4382 assert(entity->variable.initializer == NULL);
4384 entity->declaration.kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
4385 entity->variable.v.vla_base = NULL;
4387 /* TODO: record VLA somewhere so we create the free node when we leave
4391 static void allocate_variable_length_array(entity_t *entity)
4393 assert(entity->kind == ENTITY_VARIABLE);
4394 assert(entity->variable.initializer == NULL);
4395 assert(get_cur_block() != NULL);
4397 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4398 type_t *type = entity->declaration.type;
4399 ir_type *el_type = get_ir_type(type->array.element_type);
4401 /* make sure size_node is calculated */
4402 get_type_size_node(type);
4403 ir_node *elems = type->array.size_node;
4404 ir_node *mem = get_store();
4405 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
4407 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
4408 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
4411 assert(entity->declaration.kind == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
4412 entity->variable.v.vla_base = addr;
4416 * Creates a Firm local variable from a declaration.
4418 static void create_local_variable(entity_t *entity)
4420 assert(entity->kind == ENTITY_VARIABLE);
4421 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4423 bool needs_entity = entity->variable.address_taken;
4424 type_t *type = skip_typeref(entity->declaration.type);
4426 /* is it a variable length array? */
4427 if (is_type_array(type) && !type->array.size_constant) {
4428 create_variable_length_array(entity);
4430 } else if (is_type_array(type) || is_type_compound(type)) {
4431 needs_entity = true;
4432 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4433 needs_entity = true;
4437 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
4438 create_variable_entity(entity,
4439 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
4442 entity->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
4443 entity->variable.v.value_number = next_value_number_function;
4444 set_irg_loc_description(current_ir_graph, next_value_number_function,
4446 ++next_value_number_function;
4450 static void create_local_static_variable(entity_t *entity)
4452 assert(entity->kind == ENTITY_VARIABLE);
4453 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4455 type_t *type = skip_typeref(entity->declaration.type);
4456 ir_type *const var_type = entity->variable.thread_local ?
4457 get_tls_type() : get_glob_type();
4458 ir_type *const irtype = get_ir_type(type);
4459 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
4461 size_t l = strlen(entity->base.symbol->string);
4462 char buf[l + sizeof(".%u")];
4463 snprintf(buf, sizeof(buf), "%s.%%u", entity->base.symbol->string);
4464 ident *const id = id_unique(buf);
4466 ir_entity *const irentity = new_d_entity(var_type, id, irtype, dbgi);
4468 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4469 set_entity_volatility(irentity, volatility_is_volatile);
4472 entity->declaration.kind = DECLARATION_KIND_GLOBAL_VARIABLE;
4473 entity->variable.v.entity = irentity;
4475 set_entity_ld_ident(irentity, id);
4476 set_entity_variability(irentity, variability_uninitialized);
4477 set_entity_visibility(irentity, visibility_local);
4478 set_entity_allocation(irentity, entity->variable.thread_local ?
4479 allocation_automatic : allocation_static);
4481 ir_graph *const old_current_ir_graph = current_ir_graph;
4482 current_ir_graph = get_const_code_irg();
4484 create_variable_initializer(entity);
4486 assert(current_ir_graph == get_const_code_irg());
4487 current_ir_graph = old_current_ir_graph;
4492 static void return_statement_to_firm(return_statement_t *statement)
4494 if (get_cur_block() == NULL)
4497 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4498 type_t *type = current_function_entity->declaration.type;
4499 ir_type *func_irtype = get_ir_type(type);
4504 if (get_method_n_ress(func_irtype) > 0) {
4505 ir_type *res_type = get_method_res_type(func_irtype, 0);
4507 if (statement->value != NULL) {
4508 ir_node *node = expression_to_firm(statement->value);
4509 if (!is_compound_type(res_type)) {
4510 type_t *type = statement->value->base.type;
4511 ir_mode *mode = get_ir_mode_storage(type);
4512 node = create_conv(dbgi, node, mode);
4513 node = do_strict_conv(dbgi, node);
4518 if (is_compound_type(res_type)) {
4521 mode = get_type_mode(res_type);
4523 in[0] = new_Unknown(mode);
4527 /* build return_value for its side effects */
4528 if (statement->value != NULL) {
4529 expression_to_firm(statement->value);
4534 ir_node *store = get_store();
4535 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
4537 ir_node *end_block = get_irg_end_block(current_ir_graph);
4538 add_immBlock_pred(end_block, ret);
4540 set_cur_block(NULL);
4543 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
4545 if (get_cur_block() == NULL)
4548 return expression_to_firm(statement->expression);
4551 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
4553 entity_t *entity = compound->scope.entities;
4554 for ( ; entity != NULL; entity = entity->base.next) {
4555 if (!is_declaration(entity))
4558 create_local_declaration(entity);
4561 ir_node *result = NULL;
4562 statement_t *statement = compound->statements;
4563 for ( ; statement != NULL; statement = statement->base.next) {
4564 if (statement->base.next == NULL
4565 && statement->kind == STATEMENT_EXPRESSION) {
4566 result = expression_statement_to_firm(
4567 &statement->expression);
4570 statement_to_firm(statement);
4576 static void create_global_variable(entity_t *entity)
4578 assert(entity->kind == ENTITY_VARIABLE);
4581 switch ((storage_class_tag_t)entity->declaration.storage_class) {
4582 case STORAGE_CLASS_STATIC: vis = visibility_local; break;
4583 case STORAGE_CLASS_EXTERN: vis = visibility_external_allocated; break;
4584 case STORAGE_CLASS_NONE: vis = visibility_external_visible; break;
4586 default: panic("Invalid storage class for global variable");
4589 ir_type *var_type = entity->variable.thread_local ?
4590 get_tls_type() : get_glob_type();
4591 create_variable_entity(entity,
4592 DECLARATION_KIND_GLOBAL_VARIABLE, var_type);
4593 set_entity_visibility(entity->variable.v.entity, vis);
4596 static void create_local_declaration(entity_t *entity)
4598 assert(is_declaration(entity));
4600 /* construct type */
4601 (void) get_ir_type(entity->declaration.type);
4602 if (entity->base.symbol == NULL) {
4606 switch ((storage_class_tag_t) entity->declaration.storage_class) {
4607 case STORAGE_CLASS_STATIC:
4608 create_local_static_variable(entity);
4610 case STORAGE_CLASS_EXTERN:
4611 if (entity->kind == ENTITY_FUNCTION) {
4612 assert(entity->function.statement == NULL);
4613 (void)get_function_entity(entity, NULL);
4615 create_global_variable(entity);
4616 create_variable_initializer(entity);
4619 case STORAGE_CLASS_NONE:
4620 case STORAGE_CLASS_AUTO:
4621 case STORAGE_CLASS_REGISTER:
4622 if (entity->kind == ENTITY_FUNCTION) {
4623 if (entity->function.statement != NULL) {
4624 ir_type *owner = get_irg_frame_type(current_ir_graph);
4625 (void)get_function_entity(entity, owner);
4626 entity->declaration.kind = DECLARATION_KIND_INNER_FUNCTION;
4627 enqueue_inner_function(entity);
4629 (void)get_function_entity(entity, NULL);
4632 create_local_variable(entity);
4635 case STORAGE_CLASS_TYPEDEF:
4638 panic("invalid storage class found");
4641 static void initialize_local_declaration(entity_t *entity)
4643 if (entity->base.symbol == NULL)
4646 // no need to emit code in dead blocks
4647 if (entity->declaration.storage_class != STORAGE_CLASS_STATIC
4648 && get_cur_block() == NULL)
4651 switch ((declaration_kind_t) entity->declaration.kind) {
4652 case DECLARATION_KIND_LOCAL_VARIABLE:
4653 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4654 create_variable_initializer(entity);
4657 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4658 allocate_variable_length_array(entity);
4661 case DECLARATION_KIND_COMPOUND_MEMBER:
4662 case DECLARATION_KIND_GLOBAL_VARIABLE:
4663 case DECLARATION_KIND_FUNCTION:
4664 case DECLARATION_KIND_INNER_FUNCTION:
4667 case DECLARATION_KIND_PARAMETER:
4668 case DECLARATION_KIND_PARAMETER_ENTITY:
4669 panic("can't initialize parameters");
4671 case DECLARATION_KIND_UNKNOWN:
4672 panic("can't initialize unknown declaration");
4674 panic("invalid declaration kind");
4677 static void declaration_statement_to_firm(declaration_statement_t *statement)
4679 entity_t *entity = statement->declarations_begin;
4683 entity_t *const last = statement->declarations_end;
4684 for ( ;; entity = entity->base.next) {
4685 if (is_declaration(entity)) {
4686 initialize_local_declaration(entity);
4687 } else if (entity->kind == ENTITY_TYPEDEF) {
4688 /* ยง6.7.7:3 Any array size expressions associated with variable length
4689 * array declarators are evaluated each time the declaration of the
4690 * typedef name is reached in the order of execution. */
4691 type_t *const type = skip_typeref(entity->typedefe.type);
4692 if (is_type_array(type) && type->array.is_vla)
4693 get_vla_size(&type->array);
4700 static void if_statement_to_firm(if_statement_t *statement)
4702 ir_node *cur_block = get_cur_block();
4704 ir_node *fallthrough_block = NULL;
4706 /* the true (blocks) */
4707 ir_node *true_block = NULL;
4708 if (statement->true_statement != NULL) {
4709 true_block = new_immBlock();
4710 set_cur_block(true_block);
4711 statement_to_firm(statement->true_statement);
4712 if (get_cur_block() != NULL) {
4713 ir_node *jmp = new_Jmp();
4714 if (fallthrough_block == NULL)
4715 fallthrough_block = new_immBlock();
4716 add_immBlock_pred(fallthrough_block, jmp);
4720 /* the false (blocks) */
4721 ir_node *false_block = NULL;
4722 if (statement->false_statement != NULL) {
4723 false_block = new_immBlock();
4724 set_cur_block(false_block);
4726 statement_to_firm(statement->false_statement);
4727 if (get_cur_block() != NULL) {
4728 ir_node *jmp = new_Jmp();
4729 if (fallthrough_block == NULL)
4730 fallthrough_block = new_immBlock();
4731 add_immBlock_pred(fallthrough_block, jmp);
4735 /* create the condition */
4736 if (cur_block != NULL) {
4737 if (true_block == NULL || false_block == NULL) {
4738 if (fallthrough_block == NULL)
4739 fallthrough_block = new_immBlock();
4740 if (true_block == NULL)
4741 true_block = fallthrough_block;
4742 if (false_block == NULL)
4743 false_block = fallthrough_block;
4746 set_cur_block(cur_block);
4747 create_condition_evaluation(statement->condition, true_block,
4751 mature_immBlock(true_block);
4752 if (false_block != fallthrough_block && false_block != NULL) {
4753 mature_immBlock(false_block);
4755 if (fallthrough_block != NULL) {
4756 mature_immBlock(fallthrough_block);
4759 set_cur_block(fallthrough_block);
4762 static void while_statement_to_firm(while_statement_t *statement)
4764 ir_node *jmp = NULL;
4765 if (get_cur_block() != NULL) {
4769 /* create the header block */
4770 ir_node *header_block = new_immBlock();
4772 add_immBlock_pred(header_block, jmp);
4776 ir_node *old_continue_label = continue_label;
4777 ir_node *old_break_label = break_label;
4778 continue_label = header_block;
4781 ir_node *body_block = new_immBlock();
4782 set_cur_block(body_block);
4783 statement_to_firm(statement->body);
4784 ir_node *false_block = break_label;
4786 assert(continue_label == header_block);
4787 continue_label = old_continue_label;
4788 break_label = old_break_label;
4790 if (get_cur_block() != NULL) {
4792 add_immBlock_pred(header_block, jmp);
4795 /* shortcut for while(true) */
4796 if (is_constant_expression(statement->condition)
4797 && fold_constant_to_bool(statement->condition) != 0) {
4798 set_cur_block(header_block);
4799 ir_node *header_jmp = new_Jmp();
4800 add_immBlock_pred(body_block, header_jmp);
4802 keep_alive(body_block);
4803 keep_all_memory(body_block);
4804 set_cur_block(body_block);
4806 if (false_block == NULL) {
4807 false_block = new_immBlock();
4810 /* create the condition */
4811 set_cur_block(header_block);
4813 create_condition_evaluation(statement->condition, body_block,
4817 mature_immBlock(body_block);
4818 mature_immBlock(header_block);
4819 if (false_block != NULL) {
4820 mature_immBlock(false_block);
4823 set_cur_block(false_block);
4826 static void do_while_statement_to_firm(do_while_statement_t *statement)
4828 ir_node *jmp = NULL;
4829 if (get_cur_block() != NULL) {
4833 /* create the header block */
4834 ir_node *header_block = new_immBlock();
4837 ir_node *body_block = new_immBlock();
4839 add_immBlock_pred(body_block, jmp);
4842 ir_node *old_continue_label = continue_label;
4843 ir_node *old_break_label = break_label;
4844 continue_label = header_block;
4847 set_cur_block(body_block);
4848 statement_to_firm(statement->body);
4849 ir_node *false_block = break_label;
4851 assert(continue_label == header_block);
4852 continue_label = old_continue_label;
4853 break_label = old_break_label;
4855 if (get_cur_block() != NULL) {
4856 ir_node *body_jmp = new_Jmp();
4857 add_immBlock_pred(header_block, body_jmp);
4858 mature_immBlock(header_block);
4861 if (false_block == NULL) {
4862 false_block = new_immBlock();
4865 /* create the condition */
4866 set_cur_block(header_block);
4868 create_condition_evaluation(statement->condition, body_block, false_block);
4869 mature_immBlock(body_block);
4870 mature_immBlock(header_block);
4871 mature_immBlock(false_block);
4873 set_cur_block(false_block);
4876 static void for_statement_to_firm(for_statement_t *statement)
4878 ir_node *jmp = NULL;
4880 /* create declarations */
4881 entity_t *entity = statement->scope.entities;
4882 for ( ; entity != NULL; entity = entity->base.next) {
4883 if (!is_declaration(entity))
4886 create_local_declaration(entity);
4889 if (get_cur_block() != NULL) {
4890 entity = statement->scope.entities;
4891 for ( ; entity != NULL; entity = entity->base.next) {
4892 if (!is_declaration(entity))
4895 initialize_local_declaration(entity);
4898 if (statement->initialisation != NULL) {
4899 expression_to_firm(statement->initialisation);
4906 /* create the step block */
4907 ir_node *const step_block = new_immBlock();
4908 set_cur_block(step_block);
4909 if (statement->step != NULL) {
4910 expression_to_firm(statement->step);
4912 ir_node *const step_jmp = new_Jmp();
4914 /* create the header block */
4915 ir_node *const header_block = new_immBlock();
4916 set_cur_block(header_block);
4918 add_immBlock_pred(header_block, jmp);
4920 add_immBlock_pred(header_block, step_jmp);
4922 /* the false block */
4923 ir_node *const false_block = new_immBlock();
4926 ir_node *body_block;
4927 if (statement->body != NULL) {
4928 ir_node *const old_continue_label = continue_label;
4929 ir_node *const old_break_label = break_label;
4930 continue_label = step_block;
4931 break_label = false_block;
4933 body_block = new_immBlock();
4934 set_cur_block(body_block);
4935 statement_to_firm(statement->body);
4937 assert(continue_label == step_block);
4938 assert(break_label == false_block);
4939 continue_label = old_continue_label;
4940 break_label = old_break_label;
4942 if (get_cur_block() != NULL) {
4944 add_immBlock_pred(step_block, jmp);
4947 body_block = step_block;
4950 /* create the condition */
4951 set_cur_block(header_block);
4952 if (statement->condition != NULL) {
4953 create_condition_evaluation(statement->condition, body_block,
4956 keep_alive(header_block);
4957 keep_all_memory(header_block);
4959 add_immBlock_pred(body_block, jmp);
4962 mature_immBlock(body_block);
4963 mature_immBlock(false_block);
4964 mature_immBlock(step_block);
4965 mature_immBlock(header_block);
4966 mature_immBlock(false_block);
4968 set_cur_block(false_block);
4971 static void create_jump_statement(const statement_t *statement,
4972 ir_node *target_block)
4974 if (get_cur_block() == NULL)
4977 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4978 ir_node *jump = new_d_Jmp(dbgi);
4979 add_immBlock_pred(target_block, jump);
4981 set_cur_block(NULL);
4984 static ir_node *get_break_label(void)
4986 if (break_label == NULL) {
4987 break_label = new_immBlock();
4992 static void switch_statement_to_firm(switch_statement_t *statement)
4994 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4996 ir_node *expression = expression_to_firm(statement->expression);
4997 ir_node *cond = new_d_Cond(dbgi, expression);
4999 set_cur_block(NULL);
5001 ir_node *const old_switch_cond = current_switch_cond;
5002 ir_node *const old_break_label = break_label;
5003 const bool old_saw_default_label = saw_default_label;
5004 saw_default_label = false;
5005 current_switch_cond = cond;
5007 switch_statement_t *const old_switch = current_switch;
5008 current_switch = statement;
5010 /* determine a free number for the default label */
5011 unsigned long num_cases = 0;
5013 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
5014 if (l->expression == NULL) {
5018 if (l->last_case >= l->first_case)
5019 num_cases += l->last_case - l->first_case + 1;
5020 if (l->last_case > def_nr)
5021 def_nr = l->last_case;
5024 if (def_nr == INT_MAX) {
5025 /* Bad: an overflow will occur, we cannot be sure that the
5026 * maximum + 1 is a free number. Scan the values a second
5027 * time to find a free number.
5029 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
5031 memset(bits, 0, (num_cases + 7) >> 3);
5032 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
5033 if (l->expression == NULL) {
5037 unsigned long start = l->first_case > 0 ? (unsigned long)l->first_case : 0;
5038 if (start < num_cases && l->last_case >= 0) {
5039 unsigned long end = (unsigned long)l->last_case < num_cases ?
5040 (unsigned long)l->last_case : num_cases - 1;
5041 for (unsigned long cns = start; cns <= end; ++cns) {
5042 bits[cns >> 3] |= (1 << (cns & 7));
5046 /* We look at the first num_cases constants:
5047 * Either they are dense, so we took the last (num_cases)
5048 * one, or they are not dense, so we will find one free
5052 for (i = 0; i < num_cases; ++i)
5053 if ((bits[i >> 3] & (1 << (i & 7))) == 0)
5061 statement->default_proj_nr = def_nr;
5063 if (statement->body != NULL) {
5064 statement_to_firm(statement->body);
5067 if (get_cur_block() != NULL) {
5068 ir_node *jmp = new_Jmp();
5069 add_immBlock_pred(get_break_label(), jmp);
5072 if (!saw_default_label) {
5073 set_cur_block(get_nodes_block(cond));
5074 ir_node *const proj = new_d_defaultProj(dbgi, cond,
5075 statement->default_proj_nr);
5076 add_immBlock_pred(get_break_label(), proj);
5079 if (break_label != NULL) {
5080 mature_immBlock(break_label);
5082 set_cur_block(break_label);
5084 assert(current_switch_cond == cond);
5085 current_switch = old_switch;
5086 current_switch_cond = old_switch_cond;
5087 break_label = old_break_label;
5088 saw_default_label = old_saw_default_label;
5091 static void case_label_to_firm(const case_label_statement_t *statement)
5093 if (statement->is_empty_range)
5096 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5098 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
5101 ir_node *block = new_immBlock();
5103 set_cur_block(get_nodes_block(current_switch_cond));
5104 if (statement->expression != NULL) {
5105 long pn = statement->first_case;
5106 long end_pn = statement->last_case;
5107 assert(pn <= end_pn);
5108 /* create jumps for all cases in the given range */
5110 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
5111 add_immBlock_pred(block, proj);
5112 } while (pn++ < end_pn);
5114 saw_default_label = true;
5115 proj = new_d_defaultProj(dbgi, current_switch_cond,
5116 current_switch->default_proj_nr);
5118 add_immBlock_pred(block, proj);
5121 if (fallthrough != NULL) {
5122 add_immBlock_pred(block, fallthrough);
5124 mature_immBlock(block);
5125 set_cur_block(block);
5127 if (statement->statement != NULL) {
5128 statement_to_firm(statement->statement);
5132 static void label_to_firm(const label_statement_t *statement)
5134 ir_node *block = get_label_block(statement->label);
5136 if (get_cur_block() != NULL) {
5137 ir_node *jmp = new_Jmp();
5138 add_immBlock_pred(block, jmp);
5141 set_cur_block(block);
5143 keep_all_memory(block);
5145 if (statement->statement != NULL) {
5146 statement_to_firm(statement->statement);
5150 static void goto_to_firm(const goto_statement_t *statement)
5152 if (get_cur_block() == NULL)
5155 if (statement->expression) {
5156 ir_node *irn = expression_to_firm(statement->expression);
5157 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5158 ir_node *ijmp = new_d_IJmp(dbgi, irn);
5160 set_irn_link(ijmp, ijmp_list);
5163 ir_node *block = get_label_block(statement->label);
5164 ir_node *jmp = new_Jmp();
5165 add_immBlock_pred(block, jmp);
5167 set_cur_block(NULL);
5170 static void asm_statement_to_firm(const asm_statement_t *statement)
5172 bool needs_memory = false;
5174 if (statement->is_volatile) {
5175 needs_memory = true;
5178 size_t n_clobbers = 0;
5179 asm_clobber_t *clobber = statement->clobbers;
5180 for ( ; clobber != NULL; clobber = clobber->next) {
5181 const char *clobber_str = clobber->clobber.begin;
5183 if (!be_is_valid_clobber(clobber_str)) {
5184 errorf(&statement->base.source_position,
5185 "invalid clobber '%s' specified", clobber->clobber);
5189 if (strcmp(clobber_str, "memory") == 0) {
5190 needs_memory = true;
5194 ident *id = new_id_from_str(clobber_str);
5195 obstack_ptr_grow(&asm_obst, id);
5198 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
5199 ident **clobbers = NULL;
5200 if (n_clobbers > 0) {
5201 clobbers = obstack_finish(&asm_obst);
5204 size_t n_inputs = 0;
5205 asm_argument_t *argument = statement->inputs;
5206 for ( ; argument != NULL; argument = argument->next)
5208 size_t n_outputs = 0;
5209 argument = statement->outputs;
5210 for ( ; argument != NULL; argument = argument->next)
5213 unsigned next_pos = 0;
5215 ir_node *ins[n_inputs + n_outputs + 1];
5218 ir_asm_constraint tmp_in_constraints[n_outputs];
5220 const expression_t *out_exprs[n_outputs];
5221 ir_node *out_addrs[n_outputs];
5222 size_t out_size = 0;
5224 argument = statement->outputs;
5225 for ( ; argument != NULL; argument = argument->next) {
5226 const char *constraints = argument->constraints.begin;
5227 asm_constraint_flags_t asm_flags
5228 = be_parse_asm_constraints(constraints);
5230 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5231 warningf(&statement->base.source_position,
5232 "some constraints in '%s' are not supported", constraints);
5234 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5235 errorf(&statement->base.source_position,
5236 "some constraints in '%s' are invalid", constraints);
5239 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
5240 errorf(&statement->base.source_position,
5241 "no write flag specified for output constraints '%s'",
5246 unsigned pos = next_pos++;
5247 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5248 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5249 expression_t *expr = argument->expression;
5250 ir_node *addr = expression_to_addr(expr);
5251 /* in+output, construct an artifical same_as constraint on the
5253 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
5255 ir_node *value = get_value_from_lvalue(expr, addr);
5257 snprintf(buf, sizeof(buf), "%u", pos);
5259 ir_asm_constraint constraint;
5260 constraint.pos = pos;
5261 constraint.constraint = new_id_from_str(buf);
5262 constraint.mode = get_ir_mode_storage(expr->base.type);
5263 tmp_in_constraints[in_size] = constraint;
5264 ins[in_size] = value;
5269 out_exprs[out_size] = expr;
5270 out_addrs[out_size] = addr;
5272 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5273 /* pure memory ops need no input (but we have to make sure we
5274 * attach to the memory) */
5275 assert(! (asm_flags &
5276 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5277 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5278 needs_memory = true;
5280 /* we need to attach the address to the inputs */
5281 expression_t *expr = argument->expression;
5283 ir_asm_constraint constraint;
5284 constraint.pos = pos;
5285 constraint.constraint = new_id_from_str(constraints);
5286 constraint.mode = NULL;
5287 tmp_in_constraints[in_size] = constraint;
5289 ins[in_size] = expression_to_addr(expr);
5293 errorf(&statement->base.source_position,
5294 "only modifiers but no place set in constraints '%s'",
5299 ir_asm_constraint constraint;
5300 constraint.pos = pos;
5301 constraint.constraint = new_id_from_str(constraints);
5302 constraint.mode = get_ir_mode_storage(argument->expression->base.type);
5304 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5306 assert(obstack_object_size(&asm_obst)
5307 == out_size * sizeof(ir_asm_constraint));
5308 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
5311 obstack_grow(&asm_obst, tmp_in_constraints,
5312 in_size * sizeof(tmp_in_constraints[0]));
5313 /* find and count input and output arguments */
5314 argument = statement->inputs;
5315 for ( ; argument != NULL; argument = argument->next) {
5316 const char *constraints = argument->constraints.begin;
5317 asm_constraint_flags_t asm_flags
5318 = be_parse_asm_constraints(constraints);
5320 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5321 errorf(&statement->base.source_position,
5322 "some constraints in '%s' are not supported", constraints);
5325 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5326 errorf(&statement->base.source_position,
5327 "some constraints in '%s' are invalid", constraints);
5330 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
5331 errorf(&statement->base.source_position,
5332 "write flag specified for input constraints '%s'",
5338 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5339 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5340 /* we can treat this as "normal" input */
5341 input = expression_to_firm(argument->expression);
5342 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5343 /* pure memory ops need no input (but we have to make sure we
5344 * attach to the memory) */
5345 assert(! (asm_flags &
5346 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5347 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5348 needs_memory = true;
5349 input = expression_to_addr(argument->expression);
5351 errorf(&statement->base.source_position,
5352 "only modifiers but no place set in constraints '%s'",
5357 ir_asm_constraint constraint;
5358 constraint.pos = next_pos++;
5359 constraint.constraint = new_id_from_str(constraints);
5360 constraint.mode = get_irn_mode(input);
5362 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5363 ins[in_size++] = input;
5367 ir_asm_constraint constraint;
5368 constraint.pos = next_pos++;
5369 constraint.constraint = new_id_from_str("");
5370 constraint.mode = mode_M;
5372 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5373 ins[in_size++] = get_store();
5376 assert(obstack_object_size(&asm_obst)
5377 == in_size * sizeof(ir_asm_constraint));
5378 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
5380 /* create asm node */
5381 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5383 ident *asm_text = new_id_from_str(statement->asm_text.begin);
5385 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
5386 out_size, output_constraints,
5387 n_clobbers, clobbers, asm_text);
5389 if (statement->is_volatile) {
5390 set_irn_pinned(node, op_pin_state_pinned);
5392 set_irn_pinned(node, op_pin_state_floats);
5395 /* create output projs & connect them */
5397 ir_node *projm = new_Proj(node, mode_M, out_size+1);
5402 for (i = 0; i < out_size; ++i) {
5403 const expression_t *out_expr = out_exprs[i];
5405 ir_mode *mode = get_ir_mode_storage(out_expr->base.type);
5406 ir_node *proj = new_Proj(node, mode, pn);
5407 ir_node *addr = out_addrs[i];
5409 set_value_for_expression_addr(out_expr, proj, addr);
5413 static void ms_try_statement_to_firm(ms_try_statement_t *statement)
5415 statement_to_firm(statement->try_statement);
5416 warningf(&statement->base.source_position, "structured exception handling ignored");
5419 static void leave_statement_to_firm(leave_statement_t *statement)
5421 errorf(&statement->base.source_position, "__leave not supported yet");
5425 * Transform a statement.
5427 static void statement_to_firm(statement_t *statement)
5430 assert(!statement->base.transformed);
5431 statement->base.transformed = true;
5434 switch (statement->kind) {
5435 case STATEMENT_INVALID:
5436 panic("invalid statement found");
5437 case STATEMENT_EMPTY:
5440 case STATEMENT_COMPOUND:
5441 compound_statement_to_firm(&statement->compound);
5443 case STATEMENT_RETURN:
5444 return_statement_to_firm(&statement->returns);
5446 case STATEMENT_EXPRESSION:
5447 expression_statement_to_firm(&statement->expression);
5450 if_statement_to_firm(&statement->ifs);
5452 case STATEMENT_WHILE:
5453 while_statement_to_firm(&statement->whiles);
5455 case STATEMENT_DO_WHILE:
5456 do_while_statement_to_firm(&statement->do_while);
5458 case STATEMENT_DECLARATION:
5459 declaration_statement_to_firm(&statement->declaration);
5461 case STATEMENT_BREAK:
5462 create_jump_statement(statement, get_break_label());
5464 case STATEMENT_CONTINUE:
5465 create_jump_statement(statement, continue_label);
5467 case STATEMENT_SWITCH:
5468 switch_statement_to_firm(&statement->switchs);
5470 case STATEMENT_CASE_LABEL:
5471 case_label_to_firm(&statement->case_label);
5474 for_statement_to_firm(&statement->fors);
5476 case STATEMENT_LABEL:
5477 label_to_firm(&statement->label);
5479 case STATEMENT_GOTO:
5480 goto_to_firm(&statement->gotos);
5483 asm_statement_to_firm(&statement->asms);
5485 case STATEMENT_MS_TRY:
5486 ms_try_statement_to_firm(&statement->ms_try);
5488 case STATEMENT_LEAVE:
5489 leave_statement_to_firm(&statement->leave);
5492 panic("statement not implemented");
5495 static int count_local_variables(const entity_t *entity,
5496 const entity_t *const last)
5499 entity_t const *const end = last != NULL ? last->base.next : NULL;
5500 for (; entity != end; entity = entity->base.next) {
5504 if (entity->kind == ENTITY_VARIABLE) {
5505 type = skip_typeref(entity->declaration.type);
5506 address_taken = entity->variable.address_taken;
5507 } else if (entity->kind == ENTITY_PARAMETER) {
5508 type = skip_typeref(entity->declaration.type);
5509 address_taken = entity->parameter.address_taken;
5514 if (!address_taken && is_type_scalar(type))
5520 static void count_local_variables_in_stmt(statement_t *stmt, void *const env)
5522 int *const count = env;
5524 switch (stmt->kind) {
5525 case STATEMENT_DECLARATION: {
5526 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5527 *count += count_local_variables(decl_stmt->declarations_begin,
5528 decl_stmt->declarations_end);
5533 *count += count_local_variables(stmt->fors.scope.entities, NULL);
5542 * Return the number of local (alias free) variables used by a function.
5544 static int get_function_n_local_vars(entity_t *entity)
5546 const function_t *function = &entity->function;
5549 /* count parameters */
5550 count += count_local_variables(function->parameters.entities, NULL);
5552 /* count local variables declared in body */
5553 walk_statements(function->statement, count_local_variables_in_stmt, &count);
5558 * Build Firm code for the parameters of a function.
5560 static void initialize_function_parameters(entity_t *entity)
5562 assert(entity->kind == ENTITY_FUNCTION);
5563 ir_graph *irg = current_ir_graph;
5564 ir_node *args = get_irg_args(irg);
5565 ir_node *start_block = get_irg_start_block(irg);
5566 ir_type *function_irtype = get_ir_type(entity->declaration.type);
5567 int first_param_nr = 0;
5569 if (entity->function.need_closure) {
5570 /* add an extra parameter for the static link */
5571 entity->function.static_link = new_r_Proj(irg, start_block, args, mode_P_data, 0);
5576 entity_t *parameter = entity->function.parameters.entities;
5577 for ( ; parameter != NULL; parameter = parameter->base.next, ++n) {
5578 if (parameter->kind != ENTITY_PARAMETER)
5581 assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN);
5582 type_t *type = skip_typeref(parameter->declaration.type);
5584 bool needs_entity = parameter->parameter.address_taken;
5585 assert(!is_type_array(type));
5586 if (is_type_compound(type)) {
5587 needs_entity = true;
5591 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5592 ident *id = new_id_from_str(parameter->base.symbol->string);
5593 set_entity_ident(entity, id);
5595 parameter->declaration.kind
5596 = DECLARATION_KIND_PARAMETER_ENTITY;
5597 parameter->parameter.v.entity = entity;
5601 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5602 ir_mode *param_mode = get_type_mode(param_irtype);
5604 long pn = n + first_param_nr;
5605 ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
5607 ir_mode *mode = get_ir_mode_storage(type);
5608 value = create_conv(NULL, value, mode);
5609 value = do_strict_conv(NULL, value);
5611 parameter->declaration.kind = DECLARATION_KIND_PARAMETER;
5612 parameter->parameter.v.value_number = next_value_number_function;
5613 set_irg_loc_description(current_ir_graph, next_value_number_function,
5615 ++next_value_number_function;
5617 set_value(parameter->parameter.v.value_number, value);
5622 * Handle additional decl modifiers for IR-graphs
5624 * @param irg the IR-graph
5625 * @param dec_modifiers additional modifiers
5627 static void handle_decl_modifier_irg(ir_graph_ptr irg,
5628 decl_modifiers_t decl_modifiers)
5630 if (decl_modifiers & DM_RETURNS_TWICE) {
5631 /* TRUE if the declaration includes __attribute__((returns_twice)) */
5632 set_irg_additional_property(irg, mtp_property_returns_twice);
5634 if (decl_modifiers & DM_NORETURN) {
5635 /* TRUE if the declaration includes the Microsoft
5636 __declspec(noreturn) specifier. */
5637 set_irg_additional_property(irg, mtp_property_noreturn);
5639 if (decl_modifiers & DM_NOTHROW) {
5640 /* TRUE if the declaration includes the Microsoft
5641 __declspec(nothrow) specifier. */
5642 set_irg_additional_property(irg, mtp_property_nothrow);
5644 if (decl_modifiers & DM_NAKED) {
5645 /* TRUE if the declaration includes the Microsoft
5646 __declspec(naked) specifier. */
5647 set_irg_additional_property(irg, mtp_property_naked);
5649 if (decl_modifiers & DM_FORCEINLINE) {
5650 /* TRUE if the declaration includes the
5651 Microsoft __forceinline specifier. */
5652 set_irg_inline_property(irg, irg_inline_forced);
5654 if (decl_modifiers & DM_NOINLINE) {
5655 /* TRUE if the declaration includes the Microsoft
5656 __declspec(noinline) specifier. */
5657 set_irg_inline_property(irg, irg_inline_forbidden);
5661 static void add_function_pointer(ir_type *segment, ir_entity *method,
5662 const char *unique_template)
5664 ir_type *method_type = get_entity_type(method);
5665 ident *id = id_unique(unique_template);
5666 ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code);
5668 ident *ide = id_unique(unique_template);
5669 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5670 ir_graph *irg = get_const_code_irg();
5671 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5674 set_entity_compiler_generated(ptr, 1);
5675 set_entity_variability(ptr, variability_constant);
5676 set_atomic_ent_value(ptr, val);
5680 * Generate possible IJmp branches to a given label block.
5682 static void gen_ijmp_branches(ir_node *block)
5685 for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) {
5686 add_immBlock_pred(block, ijmp);
5691 * Create code for a function and all inner functions.
5693 * @param entity the function entity
5695 static void create_function(entity_t *entity)
5697 assert(entity->kind == ENTITY_FUNCTION);
5698 ir_entity *function_entity = get_function_entity(entity, current_outer_frame);
5700 if (entity->function.statement == NULL)
5703 inner_functions = NULL;
5704 current_trampolines = NULL;
5706 if (entity->declaration.modifiers & DM_CONSTRUCTOR) {
5707 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5708 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5710 if (entity->declaration.modifiers & DM_DESTRUCTOR) {
5711 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5712 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5715 current_function_entity = entity;
5716 current_function_name = NULL;
5717 current_funcsig = NULL;
5719 assert(all_labels == NULL);
5720 all_labels = NEW_ARR_F(label_t *, 0);
5723 int n_local_vars = get_function_n_local_vars(entity);
5724 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5726 ir_graph *old_current_function = current_function;
5727 current_function = irg;
5729 set_irg_fp_model(irg, firm_opt.fp_model);
5730 tarval_enable_fp_ops(1);
5731 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5733 ir_node *first_block = get_cur_block();
5735 /* set inline flags */
5736 if (entity->function.is_inline)
5737 set_irg_inline_property(irg, irg_inline_recomended);
5738 handle_decl_modifier_irg(irg, entity->declaration.modifiers);
5740 next_value_number_function = 0;
5741 initialize_function_parameters(entity);
5742 current_static_link = entity->function.static_link;
5744 statement_to_firm(entity->function.statement);
5746 ir_node *end_block = get_irg_end_block(irg);
5748 /* do we have a return statement yet? */
5749 if (get_cur_block() != NULL) {
5750 type_t *type = skip_typeref(entity->declaration.type);
5751 assert(is_type_function(type));
5752 const function_type_t *func_type = &type->function;
5753 const type_t *return_type
5754 = skip_typeref(func_type->return_type);
5757 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5758 ret = new_Return(get_store(), 0, NULL);
5761 if (is_type_scalar(return_type)) {
5762 mode = get_ir_mode_storage(func_type->return_type);
5768 /* ยง5.1.2.2.3 main implicitly returns 0 */
5769 if (is_main(entity)) {
5770 in[0] = new_Const(get_mode_null(mode));
5772 in[0] = new_Unknown(mode);
5774 ret = new_Return(get_store(), 1, in);
5776 add_immBlock_pred(end_block, ret);
5779 bool has_computed_gotos = false;
5780 for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
5781 label_t *label = all_labels[i];
5782 if (label->address_taken) {
5783 gen_ijmp_branches(label->block);
5784 has_computed_gotos = true;
5786 mature_immBlock(label->block);
5788 if (has_computed_gotos) {
5789 /* if we have computed goto's in the function, we cannot inline it */
5790 if (get_irg_inline_property(irg) >= irg_inline_recomended) {
5791 warningf(&entity->base.source_position,
5792 "function '%Y' can never be inlined because it contains a computed goto",
5793 entity->base.symbol);
5795 set_irg_inline_property(irg, irg_inline_forbidden);
5798 DEL_ARR_F(all_labels);
5801 mature_immBlock(first_block);
5802 mature_immBlock(end_block);
5804 irg_finalize_cons(irg);
5806 /* finalize the frame type */
5807 ir_type *frame_type = get_irg_frame_type(irg);
5808 int n = get_compound_n_members(frame_type);
5811 for (int i = 0; i < n; ++i) {
5812 ir_entity *entity = get_compound_member(frame_type, i);
5813 ir_type *entity_type = get_entity_type(entity);
5815 int align = get_type_alignment_bytes(entity_type);
5816 if (align > align_all)
5820 misalign = offset % align;
5822 offset += align - misalign;
5826 set_entity_offset(entity, offset);
5827 offset += get_type_size_bytes(entity_type);
5829 set_type_size_bytes(frame_type, offset);
5830 set_type_alignment_bytes(frame_type, align_all);
5833 current_function = old_current_function;
5835 if (current_trampolines != NULL) {
5836 DEL_ARR_F(current_trampolines);
5837 current_trampolines = NULL;
5840 /* create inner functions if any */
5841 entity_t **inner = inner_functions;
5842 if (inner != NULL) {
5843 ir_type *rem_outer_frame = current_outer_frame;
5844 current_outer_frame = get_irg_frame_type(current_ir_graph);
5845 ir_type *rem_outer_value_type = current_outer_value_type;
5846 current_outer_value_type = get_irg_value_param_type(current_ir_graph);
5847 for (int i = ARR_LEN(inner) - 1; i >= 0; --i) {
5848 create_function(inner[i]);
5852 current_outer_value_type = rem_outer_value_type;
5853 current_outer_frame = rem_outer_frame;
5857 static void scope_to_firm(scope_t *scope)
5859 /* first pass: create declarations */
5860 entity_t *entity = scope->entities;
5861 for ( ; entity != NULL; entity = entity->base.next) {
5862 if (entity->base.symbol == NULL)
5865 if (entity->kind == ENTITY_FUNCTION) {
5866 if (entity->function.btk != bk_none) {
5867 /* builtins have no representation */
5870 (void)get_function_entity(entity, NULL);
5871 } else if (entity->kind == ENTITY_VARIABLE) {
5872 create_global_variable(entity);
5876 /* second pass: create code/initializers */
5877 entity = scope->entities;
5878 for ( ; entity != NULL; entity = entity->base.next) {
5879 if (entity->base.symbol == NULL)
5882 if (entity->kind == ENTITY_FUNCTION) {
5883 if (entity->function.btk != bk_none) {
5884 /* builtins have no representation */
5887 create_function(entity);
5888 } else if (entity->kind == ENTITY_VARIABLE) {
5889 assert(entity->declaration.kind
5890 == DECLARATION_KIND_GLOBAL_VARIABLE);
5891 current_ir_graph = get_const_code_irg();
5892 create_variable_initializer(entity);
5897 void init_ast2firm(void)
5899 obstack_init(&asm_obst);
5900 init_atomic_modes();
5902 /* OS option must be set to the backend */
5903 switch (firm_opt.os_support) {
5904 case OS_SUPPORT_MINGW:
5905 create_ld_ident = create_name_win32;
5907 case OS_SUPPORT_LINUX:
5908 create_ld_ident = create_name_linux_elf;
5910 case OS_SUPPORT_MACHO:
5911 create_ld_ident = create_name_macho;
5914 panic("unexpected OS support mode");
5917 /* create idents for all known runtime functions */
5918 for (size_t i = 0; i < lengthof(rts_data); ++i) {
5919 rts_idents[i] = new_id_from_str(rts_data[i].name);
5922 entitymap_init(&entitymap);
5925 static void init_ir_types(void)
5927 static int ir_types_initialized = 0;
5928 if (ir_types_initialized)
5930 ir_types_initialized = 1;
5932 ir_type_int = get_ir_type(type_int);
5933 ir_type_char = get_ir_type(type_char);
5934 ir_type_const_char = get_ir_type(type_const_char);
5935 ir_type_wchar_t = get_ir_type(type_wchar_t);
5936 ir_type_void = get_ir_type(type_void);
5938 be_params = be_get_backend_param();
5939 mode_float_arithmetic = be_params->mode_float_arithmetic;
5941 stack_param_align = be_params->stack_param_align;
5944 void exit_ast2firm(void)
5946 entitymap_destroy(&entitymap);
5947 obstack_free(&asm_obst, NULL);
5950 static void global_asm_to_firm(statement_t *s)
5952 for (; s != NULL; s = s->base.next) {
5953 assert(s->kind == STATEMENT_ASM);
5955 char const *const text = s->asms.asm_text.begin;
5956 size_t size = s->asms.asm_text.size;
5958 /* skip the last \0 */
5959 if (text[size - 1] == '\0')
5962 ident *const id = new_id_from_chars(text, size);
5967 void translation_unit_to_firm(translation_unit_t *unit)
5969 /* just to be sure */
5970 continue_label = NULL;
5972 current_switch_cond = NULL;
5973 current_translation_unit = unit;
5977 scope_to_firm(&unit->scope);
5978 global_asm_to_firm(unit->global_asm);
5980 current_ir_graph = NULL;
5981 current_translation_unit = NULL;