2 * This file is part of cparser.
3 * Copyright (C) 2007-2009 Matthias Braun <matze@braunis.de>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
27 #include <libfirm/firm.h>
28 #include <libfirm/adt/obst.h>
29 #include <libfirm/be.h>
33 #include "adt/error.h"
34 #include "adt/array.h"
42 #include "diagnostic.h"
43 #include "lang_features.h"
45 #include "type_hash.h"
47 #include "walk_statements.h"
49 #include "entitymap_t.h"
50 #include "driver/firm_opt.h"
51 #include "driver/firm_cmdline.h"
53 typedef struct trampoline_region trampoline_region;
54 struct trampoline_region {
55 ir_entity *function; /**< The function that is called by this trampoline */
56 ir_entity *region; /**< created region for the trampoline */
59 static const backend_params *be_params;
61 static ir_type *ir_type_char;
62 static ir_type *ir_type_const_char;
63 static ir_type *ir_type_wchar_t;
64 static ir_type *ir_type_void;
65 static ir_type *ir_type_int;
67 /* architecture specific floating point arithmetic mode (if any) */
68 static ir_mode *mode_float_arithmetic;
70 /* alignment of stack parameters */
71 static unsigned stack_param_align;
73 static int next_value_number_function;
74 static ir_node *continue_label;
75 static ir_node *break_label;
76 static ir_node *current_switch_cond;
77 static bool saw_default_label;
78 static label_t **all_labels;
79 static entity_t **inner_functions;
80 static ir_node *ijmp_list;
81 static bool constant_folding;
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 bool is_variadic = function_type->variadic || function_type->unspecified_parameters;
386 set_method_variadicity(irtype, variadicity_variadic);
388 unsigned cc = get_method_calling_convention(irtype);
389 switch (function_type->calling_convention) {
390 case CC_DEFAULT: /* unspecified calling convention, equal to one of the other, typically cdecl */
393 set_method_calling_convention(irtype, SET_CDECL(cc));
400 /* only non-variadic function can use stdcall, else use cdecl */
401 set_method_calling_convention(irtype, SET_STDCALL(cc));
407 /* only non-variadic function can use fastcall, else use cdecl */
408 set_method_calling_convention(irtype, SET_FASTCALL(cc));
412 /* Hmm, leave default, not accepted by the parser yet. */
417 set_method_calling_convention(irtype, get_method_calling_convention(irtype) | cc_this_call);
422 static ir_type *create_pointer_type(pointer_type_t *type)
424 type_t *points_to = type->points_to;
425 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
426 ir_type *ir_type = new_type_pointer(id_unique("pointer.%u"),
427 ir_points_to, mode_P_data);
432 static ir_type *create_reference_type(reference_type_t *type)
434 type_t *refers_to = type->refers_to;
435 ir_type *ir_refers_to = get_ir_type_incomplete(refers_to);
436 ir_type *ir_type = new_type_pointer(id_unique("reference.%u"),
437 ir_refers_to, mode_P_data);
442 static ir_type *create_array_type(array_type_t *type)
444 type_t *element_type = type->element_type;
445 ir_type *ir_element_type = get_ir_type(element_type);
447 ident *id = id_unique("array.%u");
448 ir_type *ir_type = new_type_array(id, 1, ir_element_type);
450 const int align = get_type_alignment_bytes(ir_element_type);
451 set_type_alignment_bytes(ir_type, align);
453 if (type->size_constant) {
454 int n_elements = type->size;
456 set_array_bounds_int(ir_type, 0, 0, n_elements);
458 size_t elemsize = get_type_size_bytes(ir_element_type);
459 if (elemsize % align > 0) {
460 elemsize += align - (elemsize % align);
462 set_type_size_bytes(ir_type, n_elements * elemsize);
464 set_array_lower_bound_int(ir_type, 0, 0);
466 set_type_state(ir_type, layout_fixed);
472 * Return the signed integer type of size bits.
474 * @param size the size
476 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
479 static ir_mode *s_modes[64 + 1] = {NULL, };
483 if (size <= 0 || size > 64)
486 mode = s_modes[size];
490 snprintf(name, sizeof(name), "bf_I%u", size);
491 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
492 size <= 32 ? 32 : size );
493 s_modes[size] = mode;
497 snprintf(name, sizeof(name), "I%u", size);
498 ident *id = new_id_from_str(name);
499 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
500 res = new_d_type_primitive(id_mangle_u(get_type_ident(base_tp), id), mode, dbgi);
501 set_primitive_base_type(res, base_tp);
507 * Return the unsigned integer type of size bits.
509 * @param size the size
511 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
514 static ir_mode *u_modes[64 + 1] = {NULL, };
518 if (size <= 0 || size > 64)
521 mode = u_modes[size];
525 snprintf(name, sizeof(name), "bf_U%u", size);
526 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
527 size <= 32 ? 32 : size );
528 u_modes[size] = mode;
533 snprintf(name, sizeof(name), "U%u", size);
534 ident *id = new_id_from_str(name);
535 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
536 res = new_d_type_primitive(id_mangle_u(get_type_ident(base_tp), id), mode, dbgi);
537 set_primitive_base_type(res, base_tp);
542 static ir_type *create_bitfield_type(bitfield_type_t *const type)
544 type_t *base = skip_typeref(type->base_type);
545 assert(base->kind == TYPE_ATOMIC || base->kind == TYPE_ENUM);
546 ir_type *irbase = get_ir_type(base);
548 unsigned size = type->bit_size;
550 assert(!is_type_float(base));
551 if (is_type_signed(base)) {
552 return get_signed_int_type_for_bit_size(irbase, size);
554 return get_unsigned_int_type_for_bit_size(irbase, size);
558 #define INVALID_TYPE ((ir_type_ptr)-1)
561 COMPOUND_IS_STRUCT = false,
562 COMPOUND_IS_UNION = true
566 * Construct firm type from ast struct type.
568 static ir_type *create_compound_type(compound_type_t *type,
569 bool incomplete, bool is_union)
571 compound_t *compound = type->compound;
573 if (compound->irtype != NULL && (compound->irtype_complete || incomplete)) {
574 return compound->irtype;
577 symbol_t *symbol = compound->base.symbol;
579 if (symbol != NULL) {
580 id = new_id_from_str(symbol->string);
583 id = id_unique("__anonymous_union.%u");
585 id = id_unique("__anonymous_struct.%u");
588 dbg_info *dbgi = get_dbg_info(&compound->base.source_position);
592 irtype = new_d_type_union(id, dbgi);
594 irtype = new_d_type_struct(id, dbgi);
597 compound->irtype_complete = false;
598 compound->irtype = irtype;
604 layout_union_type(type);
606 layout_struct_type(type);
609 compound->irtype_complete = true;
611 entity_t *entry = compound->members.entities;
612 for ( ; entry != NULL; entry = entry->base.next) {
613 if (entry->kind != ENTITY_COMPOUND_MEMBER)
616 symbol_t *symbol = entry->base.symbol;
617 type_t *entry_type = entry->declaration.type;
619 if (symbol == NULL) {
620 /* anonymous bitfield member, skip */
621 if (entry_type->kind == TYPE_BITFIELD)
623 assert(entry_type->kind == TYPE_COMPOUND_STRUCT
624 || entry_type->kind == TYPE_COMPOUND_UNION);
625 ident = id_unique("anon.%u");
627 ident = new_id_from_str(symbol->string);
630 dbg_info *dbgi = get_dbg_info(&entry->base.source_position);
632 ir_type *entry_irtype = get_ir_type(entry_type);
633 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
635 set_entity_offset(entity, entry->compound_member.offset);
636 set_entity_offset_bits_remainder(entity,
637 entry->compound_member.bit_offset);
639 assert(entry->declaration.kind == DECLARATION_KIND_UNKNOWN);
640 entry->declaration.kind = DECLARATION_KIND_COMPOUND_MEMBER;
641 entry->compound_member.entity = entity;
644 set_type_alignment_bytes(irtype, compound->alignment);
645 set_type_size_bytes(irtype, compound->size);
646 set_type_state(irtype, layout_fixed);
651 static ir_type *create_enum_type(enum_type_t *const type)
653 type->base.firm_type = ir_type_int;
655 ir_mode *const mode = mode_int;
656 tarval *const one = get_mode_one(mode);
657 tarval * tv_next = get_tarval_null(mode);
659 bool constant_folding_old = constant_folding;
660 constant_folding = true;
662 enum_t *enume = type->enume;
663 entity_t *entry = enume->base.next;
664 for (; entry != NULL; entry = entry->base.next) {
665 if (entry->kind != ENTITY_ENUM_VALUE)
668 expression_t *const init = entry->enum_value.value;
670 ir_node *const cnst = expression_to_firm(init);
671 if (!is_Const(cnst)) {
672 panic("couldn't fold constant");
674 tv_next = get_Const_tarval(cnst);
676 entry->enum_value.tv = tv_next;
677 tv_next = tarval_add(tv_next, one);
680 constant_folding = constant_folding_old;
682 return create_atomic_type(type->akind);
685 static ir_type *get_ir_type_incomplete(type_t *type)
687 assert(type != NULL);
688 type = skip_typeref(type);
690 if (type->base.firm_type != NULL) {
691 assert(type->base.firm_type != INVALID_TYPE);
692 return type->base.firm_type;
695 switch (type->kind) {
696 case TYPE_COMPOUND_STRUCT:
697 return create_compound_type(&type->compound, true, COMPOUND_IS_STRUCT);
698 case TYPE_COMPOUND_UNION:
699 return create_compound_type(&type->compound, true, COMPOUND_IS_UNION);
701 return get_ir_type(type);
705 ir_type *get_ir_type(type_t *type)
707 assert(type != NULL);
709 type = skip_typeref(type);
711 if (type->base.firm_type != NULL) {
712 assert(type->base.firm_type != INVALID_TYPE);
713 return type->base.firm_type;
716 ir_type *firm_type = NULL;
717 switch (type->kind) {
719 /* Happens while constant folding, when there was an error */
720 return create_atomic_type(ATOMIC_TYPE_VOID);
723 firm_type = create_atomic_type(type->atomic.akind);
726 firm_type = create_complex_type(&type->complex);
729 firm_type = create_imaginary_type(&type->imaginary);
732 firm_type = create_method_type(&type->function, false);
735 firm_type = create_pointer_type(&type->pointer);
738 firm_type = create_reference_type(&type->reference);
741 firm_type = create_array_type(&type->array);
743 case TYPE_COMPOUND_STRUCT:
744 firm_type = create_compound_type(&type->compound, false, COMPOUND_IS_STRUCT);
746 case TYPE_COMPOUND_UNION:
747 firm_type = create_compound_type(&type->compound, false, COMPOUND_IS_UNION);
750 firm_type = create_enum_type(&type->enumt);
753 firm_type = get_ir_type(type->builtin.real_type);
756 firm_type = create_bitfield_type(&type->bitfield);
764 if (firm_type == NULL)
765 panic("unknown type found");
767 type->base.firm_type = firm_type;
771 static ir_mode *get_ir_mode_storage(type_t *type)
773 ir_type *irtype = get_ir_type(type);
775 /* firm doesn't report a mode for arrays somehow... */
776 if (is_Array_type(irtype)) {
780 ir_mode *mode = get_type_mode(irtype);
781 assert(mode != NULL);
785 static ir_mode *get_ir_mode_arithmetic(type_t *type)
787 ir_mode *mode = get_ir_mode_storage(type);
788 if (mode_is_float(mode) && mode_float_arithmetic != NULL) {
789 return mode_float_arithmetic;
795 /** Names of the runtime functions. */
796 static const struct {
797 int id; /**< the rts id */
798 int n_res; /**< number of return values */
799 const char *name; /**< the name of the rts function */
800 int n_params; /**< number of parameters */
801 unsigned flags; /**< language flags */
803 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
804 { rts_abort, 0, "abort", 0, _C89 },
805 { rts_alloca, 1, "alloca", 1, _ALL },
806 { rts_abs, 1, "abs", 1, _C89 },
807 { rts_labs, 1, "labs", 1, _C89 },
808 { rts_llabs, 1, "llabs", 1, _C99 },
809 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
811 { rts_fabs, 1, "fabs", 1, _C89 },
812 { rts_sqrt, 1, "sqrt", 1, _C89 },
813 { rts_cbrt, 1, "cbrt", 1, _C99 },
814 { rts_exp, 1, "exp", 1, _C89 },
815 { rts_exp2, 1, "exp2", 1, _C89 },
816 { rts_exp10, 1, "exp10", 1, _GNUC },
817 { rts_log, 1, "log", 1, _C89 },
818 { rts_log2, 1, "log2", 1, _C89 },
819 { rts_log10, 1, "log10", 1, _C89 },
820 { rts_pow, 1, "pow", 2, _C89 },
821 { rts_sin, 1, "sin", 1, _C89 },
822 { rts_cos, 1, "cos", 1, _C89 },
823 { rts_tan, 1, "tan", 1, _C89 },
824 { rts_asin, 1, "asin", 1, _C89 },
825 { rts_acos, 1, "acos", 1, _C89 },
826 { rts_atan, 1, "atan", 1, _C89 },
827 { rts_sinh, 1, "sinh", 1, _C89 },
828 { rts_cosh, 1, "cosh", 1, _C89 },
829 { rts_tanh, 1, "tanh", 1, _C89 },
831 { rts_fabsf, 1, "fabsf", 1, _C99 },
832 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
833 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
834 { rts_expf, 1, "expf", 1, _C99 },
835 { rts_exp2f, 1, "exp2f", 1, _C99 },
836 { rts_exp10f, 1, "exp10f", 1, _GNUC },
837 { rts_logf, 1, "logf", 1, _C99 },
838 { rts_log2f, 1, "log2f", 1, _C99 },
839 { rts_log10f, 1, "log10f", 1, _C99 },
840 { rts_powf, 1, "powf", 2, _C99 },
841 { rts_sinf, 1, "sinf", 1, _C99 },
842 { rts_cosf, 1, "cosf", 1, _C99 },
843 { rts_tanf, 1, "tanf", 1, _C99 },
844 { rts_asinf, 1, "asinf", 1, _C99 },
845 { rts_acosf, 1, "acosf", 1, _C99 },
846 { rts_atanf, 1, "atanf", 1, _C99 },
847 { rts_sinhf, 1, "sinhf", 1, _C99 },
848 { rts_coshf, 1, "coshf", 1, _C99 },
849 { rts_tanhf, 1, "tanhf", 1, _C99 },
851 { rts_fabsl, 1, "fabsl", 1, _C99 },
852 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
853 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
854 { rts_expl, 1, "expl", 1, _C99 },
855 { rts_exp2l, 1, "exp2l", 1, _C99 },
856 { rts_exp10l, 1, "exp10l", 1, _GNUC },
857 { rts_logl, 1, "logl", 1, _C99 },
858 { rts_log2l, 1, "log2l", 1, _C99 },
859 { rts_log10l, 1, "log10l", 1, _C99 },
860 { rts_powl, 1, "powl", 2, _C99 },
861 { rts_sinl, 1, "sinl", 1, _C99 },
862 { rts_cosl, 1, "cosl", 1, _C99 },
863 { rts_tanl, 1, "tanl", 1, _C99 },
864 { rts_asinl, 1, "asinl", 1, _C99 },
865 { rts_acosl, 1, "acosl", 1, _C99 },
866 { rts_atanl, 1, "atanl", 1, _C99 },
867 { rts_sinhl, 1, "sinhl", 1, _C99 },
868 { rts_coshl, 1, "coshl", 1, _C99 },
869 { rts_tanhl, 1, "tanhl", 1, _C99 },
871 { rts_strcmp, 1, "strcmp", 2, _C89 },
872 { rts_strncmp, 1, "strncmp", 3, _C89 },
873 { rts_strcpy, 1, "strcpy", 2, _C89 },
874 { rts_strlen, 1, "strlen", 1, _C89 },
875 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
876 { rts_mempcpy, 1, "mempcpy", 3, _GNUC },
877 { rts_memmove, 1, "memmove", 3, _C89 }, /* HMM, man say its C99 */
878 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
879 { rts_memcmp, 1, "memcmp", 3, _C89 }, /* HMM, man say its C99 */
882 static ident *rts_idents[lengthof(rts_data)];
884 static ident* (*create_ld_ident)(entity_t*) = create_name_linux_elf;
887 * Handle GNU attributes for entities
889 * @param ent the entity
890 * @param decl the routine declaration
892 static void handle_decl_modifiers(ir_entity *irentity, entity_t *entity)
894 assert(is_declaration(entity));
895 decl_modifiers_t modifiers = entity->declaration.modifiers;
896 if (modifiers & DM_PURE) {
897 /* TRUE if the declaration includes the GNU
898 __attribute__((pure)) specifier. */
899 set_entity_additional_property(irentity, mtp_property_pure);
901 if (modifiers & DM_CONST) {
902 set_entity_additional_property(irentity, mtp_property_const);
903 have_const_functions = true;
905 if (modifiers & DM_USED) {
906 /* TRUE if the declaration includes the GNU
907 __attribute__((used)) specifier. */
908 set_entity_stickyness(irentity, stickyness_sticky);
912 static bool is_main(entity_t *entity)
914 static symbol_t *sym_main = NULL;
915 if (sym_main == NULL) {
916 sym_main = symbol_table_insert("main");
919 if (entity->base.symbol != sym_main)
921 /* must be in outermost scope */
922 if (entity->base.parent_scope != ¤t_translation_unit->scope)
929 * Creates an entity representing a function.
931 * @param declaration the function declaration
932 * @param owner_type the owner type of this function, NULL
933 * for global functions
935 static ir_entity *get_function_entity(entity_t *entity, ir_type *owner_type)
937 assert(entity->kind == ENTITY_FUNCTION);
938 if (entity->function.irentity != NULL) {
939 return entity->function.irentity;
942 if (is_main(entity)) {
943 /* force main to C linkage */
944 type_t *type = entity->declaration.type;
945 assert(is_type_function(type));
946 if (type->function.linkage != LINKAGE_C) {
947 type_t *new_type = duplicate_type(type);
948 new_type->function.linkage = LINKAGE_C;
949 type = identify_new_type(new_type);
950 entity->declaration.type = type;
954 symbol_t *symbol = entity->base.symbol;
955 ident *id = new_id_from_str(symbol->string);
958 /* already an entity defined? */
959 ir_entity *irentity = entitymap_get(&entitymap, symbol);
960 bool const has_body = entity->function.statement != NULL;
961 if (irentity != NULL) {
962 if (get_entity_visibility(irentity) == visibility_external_allocated
964 set_entity_visibility(irentity, visibility_external_visible);
969 ir_type *ir_type_method;
970 if (entity->function.need_closure)
971 ir_type_method = create_method_type(&entity->declaration.type->function, true);
973 ir_type_method = get_ir_type(entity->declaration.type);
975 bool nested_function = false;
976 if (owner_type == NULL)
977 owner_type = get_glob_type();
979 nested_function = true;
981 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
982 irentity = new_d_entity(owner_type, id, ir_type_method, dbgi);
986 ld_id = id_unique("inner.%u");
988 ld_id = create_ld_ident(entity);
989 set_entity_ld_ident(irentity, ld_id);
991 handle_decl_modifiers(irentity, entity);
993 if (! nested_function) {
994 /* static inline => local
995 * extern inline => local
996 * inline without definition => local
997 * inline with definition => external_visible */
998 storage_class_tag_t const storage_class
999 = (storage_class_tag_t) entity->declaration.storage_class;
1000 bool const is_inline = entity->function.is_inline;
1002 if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
1003 set_entity_visibility(irentity, visibility_external_visible);
1004 } else if (storage_class == STORAGE_CLASS_STATIC ||
1005 (is_inline && has_body)) {
1007 /* this entity was declared, but is defined nowhere */
1008 set_entity_peculiarity(irentity, peculiarity_description);
1010 set_entity_visibility(irentity, visibility_local);
1011 } else if (has_body) {
1012 set_entity_visibility(irentity, visibility_external_visible);
1014 set_entity_visibility(irentity, visibility_external_allocated);
1017 /* nested functions are always local */
1018 set_entity_visibility(irentity, visibility_local);
1020 set_entity_allocation(irentity, allocation_static);
1022 /* We should check for file scope here, but as long as we compile C only
1023 this is not needed. */
1024 if (! firm_opt.freestanding && !has_body) {
1025 /* check for a known runtime function */
1026 for (size_t i = 0; i < lengthof(rts_data); ++i) {
1027 if (id != rts_idents[i])
1030 /* ignore those rts functions not necessary needed for current mode */
1031 if ((c_mode & rts_data[i].flags) == 0)
1033 assert(rts_entities[rts_data[i].id] == NULL);
1034 rts_entities[rts_data[i].id] = irentity;
1038 entitymap_insert(&entitymap, symbol, irentity);
1041 entity->declaration.kind = DECLARATION_KIND_FUNCTION;
1042 entity->function.irentity = irentity;
1047 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1049 ir_mode *value_mode = get_irn_mode(value);
1051 if (value_mode == dest_mode || is_Bad(value))
1054 if (dest_mode == mode_b) {
1055 ir_node *zero = new_Const(get_mode_null(value_mode));
1056 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1057 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1061 return new_d_Conv(dbgi, value, dest_mode);
1065 * Creates a Const node representing a constant.
1067 static ir_node *const_to_firm(const const_expression_t *cnst)
1069 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1070 type_t *type = skip_typeref(cnst->base.type);
1071 ir_mode *mode = get_ir_mode_storage(type);
1076 if (mode_is_float(mode)) {
1077 tv = new_tarval_from_double(cnst->v.float_value, mode);
1079 if (mode_is_signed(mode)) {
1080 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1082 len = snprintf(buf, sizeof(buf), "%llu",
1083 (unsigned long long) cnst->v.int_value);
1085 tv = new_tarval_from_str(buf, len, mode);
1088 ir_node *res = new_d_Const(dbgi, tv);
1089 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
1090 return create_conv(dbgi, res, mode_arith);
1094 * Creates a Const node representing a character constant.
1096 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1098 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1099 ir_mode *mode = get_ir_mode_arithmetic(cnst->base.type);
1102 size_t const size = cnst->v.character.size;
1103 if (size == 1 && char_is_signed) {
1104 v = (signed char)cnst->v.character.begin[0];
1107 for (size_t i = 0; i < size; ++i) {
1108 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1112 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1113 tarval *tv = new_tarval_from_str(buf, len, mode);
1115 return new_d_Const(dbgi, tv);
1119 * Creates a Const node representing a wide character constant.
1121 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1123 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1124 ir_mode *mode = get_ir_mode_arithmetic(cnst->base.type);
1126 long long int v = cnst->v.wide_character.begin[0];
1129 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1130 tarval *tv = new_tarval_from_str(buf, len, mode);
1132 return new_d_Const(dbgi, tv);
1136 * Allocate an area of size bytes aligned at alignment
1139 static ir_entity *alloc_trampoline(ir_type *frame_type, int size, unsigned alignment) {
1140 static unsigned area_cnt = 0;
1143 snprintf(buf, sizeof(buf), "trampolin%u", area_cnt++);
1144 ident *name = new_id_from_str(buf);
1146 ir_type *tp = new_type_array(id_mangle_u(get_type_ident(frame_type), name), 1, ir_type_char);
1147 set_array_bounds_int(tp, 0, 0, size);
1148 set_type_alignment_bytes(tp, alignment);
1150 ir_entity *area = new_entity(frame_type, name, tp);
1152 /* mark this entity as compiler generated */
1153 set_entity_compiler_generated(area, 1);
1158 * Return a node representing a trampoline reagion
1159 * for a given entity.
1161 * @param dbgi debug info
1162 * @param entity the entity
1164 static ir_node *get_trampoline_region(dbg_info *dbgi, ir_entity *entity)
1166 ir_entity *region = NULL;
1169 if (current_trampolines != NULL) {
1170 for (i = ARR_LEN(current_trampolines) - 1; i >= 0; --i) {
1171 if (current_trampolines[i].function == entity) {
1172 region = current_trampolines[i].region;
1177 current_trampolines = NEW_ARR_F(trampoline_region, 0);
1179 ir_graph *irg = current_ir_graph;
1180 if (region == NULL) {
1181 /* create a new region */
1182 ir_type *frame_tp = get_irg_frame_type(irg);
1183 trampoline_region reg;
1184 reg.function = entity;
1186 reg.region = alloc_trampoline(frame_tp,
1187 be_params->trampoline_size,
1188 be_params->trampoline_align);
1189 ARR_APP1(trampoline_region, current_trampolines, reg);
1190 region = reg.region;
1192 return new_d_simpleSel(dbgi, get_irg_no_mem(irg), get_irg_frame(irg),
1198 * Creates a SymConst for a given entity.
1200 * @param dbgi debug info
1201 * @param mode the (reference) mode for the SymConst
1202 * @param entity the entity
1204 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1207 assert(entity != NULL);
1208 union symconst_symbol sym;
1209 sym.entity_p = entity;
1210 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1214 * Creates a SymConst for a given trampoline of an entity.
1216 * @param dbgi debug info
1217 * @param mode the (reference) mode for the SymConst
1218 * @param entity the entity
1220 static ir_node *create_trampoline(dbg_info *dbgi, ir_mode *mode,
1223 assert(entity != NULL);
1225 in[0] = get_trampoline_region(dbgi, entity);
1226 in[1] = create_symconst(dbgi, mode, entity);
1227 in[2] = get_irg_frame(current_ir_graph);
1229 ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_inner_trampoline, get_unknown_type());
1230 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1231 return new_Proj(irn, mode, pn_Builtin_1_result);
1235 * Creates a SymConst node representing a string constant.
1237 * @param src_pos the source position of the string constant
1238 * @param id_prefix a prefix for the name of the generated string constant
1239 * @param value the value of the string constant
1241 static ir_node *string_to_firm(const source_position_t *const src_pos,
1242 const char *const id_prefix,
1243 const string_t *const value)
1245 ir_type *const global_type = get_glob_type();
1246 dbg_info *const dbgi = get_dbg_info(src_pos);
1247 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1248 ir_type_const_char, dbgi);
1250 ident *const id = id_unique(id_prefix);
1251 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1252 set_entity_ld_ident(entity, id);
1253 set_entity_variability(entity, variability_constant);
1254 set_entity_allocation(entity, allocation_static);
1255 set_entity_visibility(entity, visibility_local);
1257 ir_type *const elem_type = ir_type_const_char;
1258 ir_mode *const mode = get_type_mode(elem_type);
1260 const char* const string = value->begin;
1261 const size_t slen = value->size;
1263 set_array_lower_bound_int(type, 0, 0);
1264 set_array_upper_bound_int(type, 0, slen);
1265 set_type_size_bytes(type, slen);
1266 set_type_state(type, layout_fixed);
1268 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1269 for (size_t i = 0; i < slen; ++i) {
1270 tvs[i] = new_tarval_from_long(string[i], mode);
1273 set_array_entity_values(entity, tvs, slen);
1276 return create_symconst(dbgi, mode_P_data, entity);
1280 * Creates a SymConst node representing a string literal.
1282 * @param literal the string literal
1284 static ir_node *string_literal_to_firm(
1285 const string_literal_expression_t* literal)
1287 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1292 * Creates a SymConst node representing a wide string literal.
1294 * @param literal the wide string literal
1296 static ir_node *wide_string_literal_to_firm(
1297 const wide_string_literal_expression_t* const literal)
1299 ir_type *const global_type = get_glob_type();
1300 ir_type *const elem_type = ir_type_wchar_t;
1301 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1302 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1305 ident *const id = id_unique("Lstr.%u");
1306 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1307 set_entity_ld_ident(entity, id);
1308 set_entity_variability(entity, variability_constant);
1309 set_entity_allocation(entity, allocation_static);
1311 ir_mode *const mode = get_type_mode(elem_type);
1313 const wchar_rep_t *const string = literal->value.begin;
1314 const size_t slen = literal->value.size;
1316 set_array_lower_bound_int(type, 0, 0);
1317 set_array_upper_bound_int(type, 0, slen);
1318 set_type_size_bytes(type, slen);
1319 set_type_state(type, layout_fixed);
1321 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1322 for (size_t i = 0; i < slen; ++i) {
1323 tvs[i] = new_tarval_from_long(string[i], mode);
1326 set_array_entity_values(entity, tvs, slen);
1329 return create_symconst(dbgi, mode_P_data, entity);
1333 * Dereference an address.
1335 * @param dbgi debug info
1336 * @param type the type of the dereferenced result (the points_to type)
1337 * @param addr the address to dereference
1339 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1340 ir_node *const addr)
1342 ir_type *irtype = get_ir_type(type);
1343 if (is_compound_type(irtype)
1344 || is_Method_type(irtype)
1345 || is_Array_type(irtype)) {
1349 ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
1350 ? cons_volatile : cons_none;
1351 ir_mode *const mode = get_type_mode(irtype);
1352 ir_node *const memory = get_store();
1353 ir_node *const load = new_d_Load(dbgi, memory, addr, mode, flags);
1354 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1355 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1357 set_store(load_mem);
1359 ir_mode *const mode_arithmetic = get_ir_mode_arithmetic(type);
1360 return create_conv(dbgi, load_res, mode_arithmetic);
1364 * Creates a strict Conv (to the node's mode) if necessary.
1366 * @param dbgi debug info
1367 * @param node the node to strict conv
1369 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1371 ir_mode *mode = get_irn_mode(node);
1373 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1375 if (!mode_is_float(mode))
1378 /* check if there is already a Conv */
1379 if (is_Conv(node)) {
1380 /* convert it into a strict Conv */
1381 set_Conv_strict(node, 1);
1385 /* otherwise create a new one */
1386 return new_d_strictConv(dbgi, node, mode);
1390 * Returns the address of a global variable.
1392 * @param dbgi debug info
1393 * @param variable the variable
1395 static ir_node *get_global_var_address(dbg_info *const dbgi,
1396 const variable_t *const variable)
1398 ir_entity *const irentity = variable->v.entity;
1399 if (variable->thread_local) {
1400 ir_node *const no_mem = new_NoMem();
1401 ir_node *const tls = get_irg_tls(current_ir_graph);
1402 return new_d_simpleSel(dbgi, no_mem, tls, irentity);
1404 return create_symconst(dbgi, mode_P_data, irentity);
1409 * Returns the correct base address depending on whether it is a parameter or a
1410 * normal local variable.
1412 static ir_node *get_local_frame(ir_entity *const ent)
1414 ir_graph *const irg = current_ir_graph;
1415 const ir_type *const owner = get_entity_owner(ent);
1416 if (owner == current_outer_frame || owner == current_outer_value_type) {
1417 assert(current_static_link != NULL);
1418 return current_static_link;
1420 return get_irg_frame(irg);
1425 * Keep all memory edges of the given block.
1427 static void keep_all_memory(ir_node *block)
1429 ir_node *old = get_cur_block();
1431 set_cur_block(block);
1432 keep_alive(get_store());
1433 /* TODO: keep all memory edges from restricted pointers */
1437 static ir_node *reference_expression_enum_value_to_firm(
1438 const reference_expression_t *ref)
1440 entity_t *entity = ref->entity;
1441 type_t *type = skip_typeref(entity->enum_value.enum_type);
1442 /* make sure the type is constructed */
1443 (void) get_ir_type(type);
1445 return new_Const(entity->enum_value.tv);
1448 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1450 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1451 entity_t *entity = ref->entity;
1452 assert(is_declaration(entity));
1453 type_t *type = skip_typeref(entity->declaration.type);
1455 /* make sure the type is constructed */
1456 (void) get_ir_type(type);
1458 /* for gcc compatibility we have to produce (dummy) addresses for some
1460 if (entity->kind == ENTITY_FUNCTION && entity->function.btk != bk_none) {
1461 if (warning.other) {
1462 warningf(&ref->base.source_position,
1463 "taking address of builtin '%Y'", ref->entity->base.symbol);
1466 /* simply create a NULL pointer */
1467 ir_mode *mode = get_ir_mode_arithmetic(type_void_ptr);
1468 ir_node *res = new_Const_long(mode, 0);
1473 switch ((declaration_kind_t) entity->declaration.kind) {
1474 case DECLARATION_KIND_UNKNOWN:
1477 case DECLARATION_KIND_LOCAL_VARIABLE: {
1478 ir_mode *const mode = get_ir_mode_storage(type);
1479 ir_node *const value = get_value(entity->variable.v.value_number, mode);
1480 return create_conv(NULL, value, get_ir_mode_arithmetic(type));
1482 case DECLARATION_KIND_PARAMETER: {
1483 ir_mode *const mode = get_ir_mode_storage(type);
1484 ir_node *const value = get_value(entity->parameter.v.value_number,mode);
1485 return create_conv(NULL, value, get_ir_mode_arithmetic(type));
1487 case DECLARATION_KIND_FUNCTION: {
1488 ir_mode *const mode = get_ir_mode_storage(type);
1489 return create_symconst(dbgi, mode, entity->function.irentity);
1491 case DECLARATION_KIND_INNER_FUNCTION: {
1492 ir_mode *const mode = get_ir_mode_storage(type);
1493 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1494 /* inner function not using the closure */
1495 return create_symconst(dbgi, mode, entity->function.irentity);
1497 /* need trampoline here */
1498 return create_trampoline(dbgi, mode, entity->function.irentity);
1501 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1502 const variable_t *variable = &entity->variable;
1503 ir_node *const addr = get_global_var_address(dbgi, variable);
1504 return deref_address(dbgi, variable->base.type, addr);
1507 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1508 ir_entity *irentity = entity->variable.v.entity;
1509 ir_node *frame = get_local_frame(irentity);
1510 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1511 return deref_address(dbgi, entity->declaration.type, sel);
1513 case DECLARATION_KIND_PARAMETER_ENTITY: {
1514 ir_entity *irentity = entity->parameter.v.entity;
1515 ir_node *frame = get_local_frame(irentity);
1516 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1517 return deref_address(dbgi, entity->declaration.type, sel);
1520 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1521 return entity->variable.v.vla_base;
1523 case DECLARATION_KIND_COMPOUND_MEMBER:
1524 panic("not implemented reference type");
1527 panic("reference to declaration with unknown type found");
1530 static ir_node *reference_addr(const reference_expression_t *ref)
1532 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1533 entity_t *entity = ref->entity;
1534 assert(is_declaration(entity));
1536 switch((declaration_kind_t) entity->declaration.kind) {
1537 case DECLARATION_KIND_UNKNOWN:
1539 case DECLARATION_KIND_PARAMETER:
1540 case DECLARATION_KIND_LOCAL_VARIABLE:
1541 /* you can store to a local variable (so we don't panic but return NULL
1542 * as an indicator for no real address) */
1544 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1545 ir_node *const addr = get_global_var_address(dbgi, &entity->variable);
1548 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1549 ir_entity *irentity = entity->variable.v.entity;
1550 ir_node *frame = get_local_frame(irentity);
1551 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1555 case DECLARATION_KIND_PARAMETER_ENTITY: {
1556 ir_entity *irentity = entity->parameter.v.entity;
1557 ir_node *frame = get_local_frame(irentity);
1558 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1563 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1564 return entity->variable.v.vla_base;
1566 case DECLARATION_KIND_FUNCTION: {
1567 type_t *const type = skip_typeref(entity->declaration.type);
1568 ir_mode *const mode = get_ir_mode_storage(type);
1569 return create_symconst(dbgi, mode, entity->function.irentity);
1572 case DECLARATION_KIND_INNER_FUNCTION: {
1573 type_t *const type = skip_typeref(entity->declaration.type);
1574 ir_mode *const mode = get_ir_mode_storage(type);
1575 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1576 /* inner function not using the closure */
1577 return create_symconst(dbgi, mode, entity->function.irentity);
1579 /* need trampoline here */
1580 return create_trampoline(dbgi, mode, entity->function.irentity);
1584 case DECLARATION_KIND_COMPOUND_MEMBER:
1585 panic("not implemented reference type");
1588 panic("reference to declaration with unknown type found");
1592 * Generate an unary builtin.
1594 * @param kind the builtin kind to generate
1595 * @param op the operand
1596 * @param function_type the function type for the GNU builtin routine
1597 * @param db debug info
1599 static ir_node *gen_unary_builtin(ir_builtin_kind kind, expression_t *op, type_t *function_type, dbg_info *db)
1602 in[0] = expression_to_firm(op);
1604 ir_type *tp = get_ir_type(function_type);
1605 ir_type *res = get_method_res_type(tp, 0);
1606 ir_node *irn = new_d_Builtin(db, get_irg_no_mem(current_ir_graph), 1, in, kind, tp);
1607 set_irn_pinned(irn, op_pin_state_floats);
1608 return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result);
1612 * Generate a pinned unary builtin.
1614 * @param kind the builtin kind to generate
1615 * @param op the operand
1616 * @param function_type the function type for the GNU builtin routine
1617 * @param db debug info
1619 static ir_node *gen_unary_builtin_pinned(ir_builtin_kind kind, expression_t *op, type_t *function_type, dbg_info *db)
1622 in[0] = expression_to_firm(op);
1624 ir_type *tp = get_ir_type(function_type);
1625 ir_type *res = get_method_res_type(tp, 0);
1626 ir_node *mem = get_store();
1627 ir_node *irn = new_d_Builtin(db, mem, 1, in, kind, tp);
1628 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1629 return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result);
1634 * Generate an binary-void-return builtin.
1636 * @param kind the builtin kind to generate
1637 * @param op1 the first operand
1638 * @param op2 the second operand
1639 * @param function_type the function type for the GNU builtin routine
1640 * @param db debug info
1642 static ir_node *gen_binary_builtin_mem(ir_builtin_kind kind, expression_t *op1, expression_t *op2,
1643 type_t *function_type, dbg_info *db)
1646 in[0] = expression_to_firm(op1);
1647 in[1] = expression_to_firm(op2);
1649 ir_type *tp = get_ir_type(function_type);
1650 ir_node *mem = get_store();
1651 ir_node *irn = new_d_Builtin(db, mem, 2, in, kind, tp);
1652 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1657 * Transform calls to builtin functions.
1659 static ir_node *process_builtin_call(const call_expression_t *call)
1661 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1663 assert(call->function->kind == EXPR_REFERENCE);
1664 reference_expression_t *builtin = &call->function->reference;
1666 type_t *type = skip_typeref(builtin->base.type);
1667 assert(is_type_pointer(type));
1669 type_t *function_type = skip_typeref(type->pointer.points_to);
1671 switch (builtin->entity->function.btk) {
1672 case bk_gnu_builtin_alloca: {
1673 if (call->arguments == NULL || call->arguments->next != NULL) {
1674 panic("invalid number of parameters on __builtin_alloca");
1676 expression_t *argument = call->arguments->expression;
1677 ir_node *size = expression_to_firm(argument);
1679 ir_node *store = get_store();
1680 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1682 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1684 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1689 case bk_gnu_builtin_huge_val:
1690 case bk_gnu_builtin_inf:
1691 case bk_gnu_builtin_inff:
1692 case bk_gnu_builtin_infl: {
1693 type_t *type = function_type->function.return_type;
1694 ir_mode *mode = get_ir_mode_arithmetic(type);
1695 tarval *tv = get_mode_infinite(mode);
1696 ir_node *res = new_d_Const(dbgi, tv);
1699 case bk_gnu_builtin_nan:
1700 case bk_gnu_builtin_nanf:
1701 case bk_gnu_builtin_nanl: {
1702 /* Ignore string for now... */
1703 assert(is_type_function(function_type));
1704 type_t *type = function_type->function.return_type;
1705 ir_mode *mode = get_ir_mode_arithmetic(type);
1706 tarval *tv = get_mode_NAN(mode);
1707 ir_node *res = new_d_Const(dbgi, tv);
1710 case bk_gnu_builtin_expect: {
1711 expression_t *argument = call->arguments->expression;
1712 return _expression_to_firm(argument);
1714 case bk_gnu_builtin_va_end:
1715 /* evaluate the argument of va_end for its side effects */
1716 _expression_to_firm(call->arguments->expression);
1718 case bk_gnu_builtin_frame_address: {
1719 expression_t *const expression = call->arguments->expression;
1720 bool val = fold_constant_to_bool(expression);
1723 return get_irg_frame(current_ir_graph);
1725 /* get the argument */
1728 in[0] = expression_to_firm(expression);
1729 in[1] = get_irg_frame(current_ir_graph);
1730 ir_type *tp = get_ir_type(function_type);
1731 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_frame_address, tp);
1732 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1735 case bk_gnu_builtin_return_address: {
1737 expression_t *const expression = call->arguments->expression;
1740 in[0] = expression_to_firm(expression);
1741 in[1] = get_irg_frame(current_ir_graph);
1742 ir_type *tp = get_ir_type(function_type);
1743 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_return_address, tp);
1744 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1746 case bk_gnu_builtin_ffs:
1747 return gen_unary_builtin(ir_bk_ffs, call->arguments->expression, function_type, dbgi);
1748 case bk_gnu_builtin_clz:
1749 return gen_unary_builtin(ir_bk_clz, call->arguments->expression, function_type, dbgi);
1750 case bk_gnu_builtin_ctz:
1751 return gen_unary_builtin(ir_bk_ctz, call->arguments->expression, function_type, dbgi);
1752 case bk_gnu_builtin_popcount:
1753 case bk_ms__popcount:
1754 return gen_unary_builtin(ir_bk_popcount, call->arguments->expression, function_type, dbgi);
1755 case bk_gnu_builtin_parity:
1756 return gen_unary_builtin(ir_bk_parity, call->arguments->expression, function_type, dbgi);
1757 case bk_gnu_builtin_prefetch: {
1758 call_argument_t *const args = call->arguments;
1759 expression_t *const addr = args->expression;
1762 in[0] = _expression_to_firm(addr);
1763 if (args->next != NULL) {
1764 expression_t *const rw = args->next->expression;
1766 in[1] = _expression_to_firm(rw);
1768 if (args->next->next != NULL) {
1769 expression_t *const locality = args->next->next->expression;
1771 in[2] = expression_to_firm(locality);
1773 in[2] = new_Const_long(mode_int, 3);
1776 in[1] = new_Const_long(mode_int, 0);
1777 in[2] = new_Const_long(mode_int, 3);
1779 ir_type *tp = get_ir_type(function_type);
1780 ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_prefetch, tp);
1781 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1784 case bk_gnu_builtin_trap:
1787 ir_type *tp = get_ir_type(function_type);
1788 ir_node *irn = new_d_Builtin(dbgi, get_store(), 0, NULL, ir_bk_trap, tp);
1789 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1792 case bk_ms__debugbreak: {
1793 ir_type *tp = get_ir_type(function_type);
1794 ir_node *irn = new_d_Builtin(dbgi, get_store(), 0, NULL, ir_bk_debugbreak, tp);
1795 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1798 case bk_ms_ReturnAddress: {
1801 in[0] = new_Const_long(mode_int, 0);
1802 in[1] = get_irg_frame(current_ir_graph);
1803 ir_type *tp = get_ir_type(function_type);
1804 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_return_address, tp);
1805 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1808 case bk_ms_rotl64: {
1809 ir_node *val = expression_to_firm(call->arguments->expression);
1810 ir_node *shf = expression_to_firm(call->arguments->next->expression);
1811 ir_mode *mode = get_irn_mode(val);
1812 return new_d_Rotl(dbgi, val, create_conv(dbgi, shf, mode_uint), mode);
1815 case bk_ms_rotr64: {
1816 ir_node *val = expression_to_firm(call->arguments->expression);
1817 ir_node *shf = expression_to_firm(call->arguments->next->expression);
1818 ir_mode *mode = get_irn_mode(val);
1819 ir_node *c = new_Const_long(mode_uint, get_mode_size_bits(mode));
1820 ir_node *sub = new_d_Sub(dbgi, c, create_conv(dbgi, shf, mode_uint), mode_uint);
1821 return new_d_Rotl(dbgi, val, sub, mode);
1823 case bk_ms_byteswap_ushort:
1824 case bk_ms_byteswap_ulong:
1825 case bk_ms_byteswap_uint64:
1826 return gen_unary_builtin(ir_bk_bswap, call->arguments->expression, function_type, dbgi);
1829 case bk_ms__indword:
1830 return gen_unary_builtin_pinned(ir_bk_inport, call->arguments->expression, function_type, dbgi);
1831 case bk_ms__outbyte:
1832 case bk_ms__outword:
1833 case bk_ms__outdword:
1834 return gen_binary_builtin_mem(ir_bk_outport, call->arguments->expression,
1835 call->arguments->next->expression, function_type, dbgi);
1837 panic("unsupported builtin found");
1842 * Transform a call expression.
1843 * Handles some special cases, like alloca() calls, which must be resolved
1844 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1845 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1848 static ir_node *call_expression_to_firm(const call_expression_t *const call)
1850 dbg_info *const dbgi = get_dbg_info(&call->base.source_position);
1851 assert(get_cur_block() != NULL);
1853 expression_t *function = call->function;
1854 if (function->kind == EXPR_REFERENCE) {
1855 const reference_expression_t *ref = &function->reference;
1856 entity_t *entity = ref->entity;
1858 if (entity->kind == ENTITY_FUNCTION) {
1859 if (entity->function.btk != bk_none) {
1860 return process_builtin_call(call);
1863 ir_entity *irentity = entity->function.irentity;
1864 if (irentity == NULL)
1865 irentity = get_function_entity(entity, NULL);
1867 if (irentity == rts_entities[rts_alloca]) {
1868 /* handle alloca() call */
1869 expression_t *argument = call->arguments->expression;
1870 ir_node *size = expression_to_firm(argument);
1871 ir_mode *mode = get_ir_mode_arithmetic(type_size_t);
1873 size = create_conv(dbgi, size, mode);
1875 ir_node *store = get_store();
1876 ir_node *alloca = new_d_Alloc(dbgi, store, size,
1877 firm_unknown_type, stack_alloc);
1878 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1880 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1886 ir_node *callee = expression_to_firm(function);
1888 type_t *type = skip_typeref(function->base.type);
1889 assert(is_type_pointer(type));
1890 pointer_type_t *pointer_type = &type->pointer;
1891 type_t *points_to = skip_typeref(pointer_type->points_to);
1892 assert(is_type_function(points_to));
1893 function_type_t *function_type = &points_to->function;
1895 int n_parameters = 0;
1896 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1897 ir_type *new_method_type = NULL;
1898 if (function_type->variadic || function_type->unspecified_parameters) {
1899 const call_argument_t *argument = call->arguments;
1900 for ( ; argument != NULL; argument = argument->next) {
1904 /* we need to construct a new method type matching the call
1906 int n_res = get_method_n_ress(ir_method_type);
1907 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1908 n_parameters, n_res, dbgi);
1909 set_method_calling_convention(new_method_type,
1910 get_method_calling_convention(ir_method_type));
1911 set_method_additional_properties(new_method_type,
1912 get_method_additional_properties(ir_method_type));
1913 set_method_variadicity(new_method_type,
1914 get_method_variadicity(ir_method_type));
1916 for (int i = 0; i < n_res; ++i) {
1917 set_method_res_type(new_method_type, i,
1918 get_method_res_type(ir_method_type, i));
1920 argument = call->arguments;
1921 for (int i = 0; i < n_parameters; ++i, argument = argument->next) {
1922 expression_t *expression = argument->expression;
1923 ir_type *irtype = get_ir_type(expression->base.type);
1924 set_method_param_type(new_method_type, i, irtype);
1926 ir_method_type = new_method_type;
1928 n_parameters = get_method_n_params(ir_method_type);
1931 ir_node *in[n_parameters];
1933 const call_argument_t *argument = call->arguments;
1934 for (int n = 0; n < n_parameters; ++n) {
1935 expression_t *expression = argument->expression;
1936 ir_node *arg_node = expression_to_firm(expression);
1938 type_t *type = skip_typeref(expression->base.type);
1939 if (!is_type_compound(type)) {
1940 ir_mode *mode = get_ir_mode_storage(expression->base.type);
1941 arg_node = create_conv(dbgi, arg_node, mode);
1942 arg_node = do_strict_conv(dbgi, arg_node);
1947 argument = argument->next;
1950 ir_node *store = get_store();
1951 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1953 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1956 type_t *return_type = skip_typeref(function_type->return_type);
1957 ir_node *result = NULL;
1959 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1960 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1962 if (is_type_scalar(return_type)) {
1963 ir_mode *mode = get_ir_mode_storage(return_type);
1964 result = new_d_Proj(dbgi, resproj, mode, 0);
1965 ir_mode *mode_arith = get_ir_mode_arithmetic(return_type);
1966 result = create_conv(NULL, result, mode_arith);
1968 ir_mode *mode = mode_P_data;
1969 result = new_d_Proj(dbgi, resproj, mode, 0);
1973 if (function->kind == EXPR_REFERENCE &&
1974 function->reference.entity->declaration.modifiers & DM_NORETURN) {
1975 /* A dead end: Keep the Call and the Block. Also place all further
1976 * nodes into a new and unreachable block. */
1978 keep_alive(get_cur_block());
1985 static void statement_to_firm(statement_t *statement);
1986 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1988 static ir_node *expression_to_addr(const expression_t *expression);
1989 static ir_node *create_condition_evaluation(const expression_t *expression,
1990 ir_node *true_block,
1991 ir_node *false_block);
1993 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1996 if (!is_type_compound(type)) {
1997 ir_mode *mode = get_ir_mode_storage(type);
1998 value = create_conv(dbgi, value, mode);
1999 value = do_strict_conv(dbgi, value);
2002 ir_node *memory = get_store();
2004 if (is_type_scalar(type)) {
2005 ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
2006 ? cons_volatile : cons_none;
2007 ir_node *store = new_d_Store(dbgi, memory, addr, value, flags);
2008 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
2009 set_store(store_mem);
2011 ir_type *irtype = get_ir_type(type);
2012 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
2013 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
2014 set_store(copyb_mem);
2018 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
2020 tarval *all_one = get_mode_all_one(mode);
2021 int mode_size = get_mode_size_bits(mode);
2023 assert(offset >= 0);
2025 assert(offset + size <= mode_size);
2026 if (size == mode_size) {
2030 long shiftr = get_mode_size_bits(mode) - size;
2031 long shiftl = offset;
2032 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
2033 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
2034 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
2035 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
2040 static ir_node *bitfield_store_to_firm(dbg_info *dbgi,
2041 ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile)
2043 ir_type *entity_type = get_entity_type(entity);
2044 ir_type *base_type = get_primitive_base_type(entity_type);
2045 assert(base_type != NULL);
2046 ir_mode *mode = get_type_mode(base_type);
2048 value = create_conv(dbgi, value, mode);
2050 /* kill upper bits of value and shift to right position */
2051 int bitoffset = get_entity_offset_bits_remainder(entity);
2052 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
2054 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
2055 ir_node *mask_node = new_d_Const(dbgi, mask);
2056 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
2057 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
2058 ir_node *shiftcount = new_d_Const(dbgi, shiftl);
2059 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
2061 /* load current value */
2062 ir_node *mem = get_store();
2063 ir_node *load = new_d_Load(dbgi, mem, addr, mode,
2064 set_volatile ? cons_volatile : cons_none);
2065 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
2066 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
2067 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
2068 tarval *inv_mask = tarval_not(shift_mask);
2069 ir_node *inv_mask_node = new_d_Const(dbgi, inv_mask);
2070 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
2072 /* construct new value and store */
2073 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
2074 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val,
2075 set_volatile ? cons_volatile : cons_none);
2076 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
2077 set_store(store_mem);
2079 return value_masked;
2082 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
2085 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2086 type_t *type = expression->base.type;
2087 ir_mode *mode = get_ir_mode_storage(type);
2088 ir_node *mem = get_store();
2089 ir_node *load = new_d_Load(dbgi, mem, addr, mode, cons_none);
2090 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
2091 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
2093 load_res = create_conv(dbgi, load_res, mode_int);
2095 set_store(load_mem);
2097 /* kill upper bits */
2098 assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER);
2099 ir_entity *entity = expression->compound_entry->compound_member.entity;
2100 int bitoffset = get_entity_offset_bits_remainder(entity);
2101 ir_type *entity_type = get_entity_type(entity);
2102 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
2103 long shift_bitsl = machine_size - bitoffset - bitsize;
2104 assert(shift_bitsl >= 0);
2105 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
2106 ir_node *countl = new_d_Const(dbgi, tvl);
2107 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
2109 long shift_bitsr = bitoffset + shift_bitsl;
2110 assert(shift_bitsr <= (long) machine_size);
2111 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
2112 ir_node *countr = new_d_Const(dbgi, tvr);
2114 if (mode_is_signed(mode)) {
2115 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
2117 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
2120 return create_conv(dbgi, shiftr, mode);
2123 /* make sure the selected compound type is constructed */
2124 static void construct_select_compound(const select_expression_t *expression)
2126 type_t *type = skip_typeref(expression->compound->base.type);
2127 if (is_type_pointer(type)) {
2128 type = type->pointer.points_to;
2130 (void) get_ir_type(type);
2133 static ir_node *set_value_for_expression_addr(const expression_t *expression,
2134 ir_node *value, ir_node *addr)
2136 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2137 type_t *type = skip_typeref(expression->base.type);
2139 if (!is_type_compound(type)) {
2140 ir_mode *mode = get_ir_mode_storage(type);
2141 value = create_conv(dbgi, value, mode);
2142 value = do_strict_conv(dbgi, value);
2145 if (expression->kind == EXPR_REFERENCE) {
2146 const reference_expression_t *ref = &expression->reference;
2148 entity_t *entity = ref->entity;
2149 assert(is_declaration(entity));
2150 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2151 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2152 set_value(entity->variable.v.value_number, value);
2154 } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2155 set_value(entity->parameter.v.value_number, value);
2161 addr = expression_to_addr(expression);
2162 assert(addr != NULL);
2164 if (expression->kind == EXPR_SELECT) {
2165 const select_expression_t *select = &expression->select;
2167 construct_select_compound(select);
2169 entity_t *entity = select->compound_entry;
2170 assert(entity->kind == ENTITY_COMPOUND_MEMBER);
2171 if (entity->declaration.type->kind == TYPE_BITFIELD) {
2172 ir_entity *irentity = entity->compound_member.entity;
2174 = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
2175 value = bitfield_store_to_firm(dbgi, irentity, addr, value,
2181 assign_value(dbgi, addr, type, value);
2185 static void set_value_for_expression(const expression_t *expression,
2188 set_value_for_expression_addr(expression, value, NULL);
2191 static ir_node *get_value_from_lvalue(const expression_t *expression,
2194 if (expression->kind == EXPR_REFERENCE) {
2195 const reference_expression_t *ref = &expression->reference;
2197 entity_t *entity = ref->entity;
2198 assert(entity->kind == ENTITY_VARIABLE
2199 || entity->kind == ENTITY_PARAMETER);
2200 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2202 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2203 value_number = entity->variable.v.value_number;
2204 assert(addr == NULL);
2205 type_t *type = skip_typeref(expression->base.type);
2206 ir_mode *mode = get_ir_mode_storage(type);
2207 ir_node *res = get_value(value_number, mode);
2208 return create_conv(NULL, res, get_ir_mode_arithmetic(type));
2209 } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2210 value_number = entity->parameter.v.value_number;
2211 assert(addr == NULL);
2212 type_t *type = skip_typeref(expression->base.type);
2213 ir_mode *mode = get_ir_mode_storage(type);
2214 ir_node *res = get_value(value_number, mode);
2215 return create_conv(NULL, res, get_ir_mode_arithmetic(type));
2219 assert(addr != NULL);
2220 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2223 if (expression->kind == EXPR_SELECT &&
2224 expression->select.compound_entry->declaration.type->kind == TYPE_BITFIELD){
2225 construct_select_compound(&expression->select);
2226 value = bitfield_extract_to_firm(&expression->select, addr);
2228 value = deref_address(dbgi, expression->base.type, addr);
2235 static ir_node *create_incdec(const unary_expression_t *expression)
2237 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2238 const expression_t *value_expr = expression->value;
2239 ir_node *addr = expression_to_addr(value_expr);
2240 ir_node *value = get_value_from_lvalue(value_expr, addr);
2242 type_t *type = skip_typeref(expression->base.type);
2243 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2246 if (is_type_pointer(type)) {
2247 pointer_type_t *pointer_type = &type->pointer;
2248 offset = get_type_size_node(pointer_type->points_to);
2250 assert(is_type_arithmetic(type));
2251 offset = new_Const(get_mode_one(mode));
2255 ir_node *store_value;
2256 switch(expression->base.kind) {
2257 case EXPR_UNARY_POSTFIX_INCREMENT:
2259 store_value = new_d_Add(dbgi, value, offset, mode);
2261 case EXPR_UNARY_POSTFIX_DECREMENT:
2263 store_value = new_d_Sub(dbgi, value, offset, mode);
2265 case EXPR_UNARY_PREFIX_INCREMENT:
2266 result = new_d_Add(dbgi, value, offset, mode);
2267 store_value = result;
2269 case EXPR_UNARY_PREFIX_DECREMENT:
2270 result = new_d_Sub(dbgi, value, offset, mode);
2271 store_value = result;
2274 panic("no incdec expr in create_incdec");
2277 set_value_for_expression_addr(value_expr, store_value, addr);
2282 static bool is_local_variable(expression_t *expression)
2284 if (expression->kind != EXPR_REFERENCE)
2286 reference_expression_t *ref_expr = &expression->reference;
2287 entity_t *entity = ref_expr->entity;
2288 if (entity->kind != ENTITY_VARIABLE)
2290 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2291 return entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE;
2294 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
2297 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
2298 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
2299 case EXPR_BINARY_NOTEQUAL:
2300 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
2301 case EXPR_BINARY_ISLESS:
2302 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
2303 case EXPR_BINARY_ISLESSEQUAL:
2304 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
2305 case EXPR_BINARY_ISGREATER:
2306 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
2307 case EXPR_BINARY_ISGREATEREQUAL:
2308 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
2309 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
2314 panic("trying to get pn_Cmp from non-comparison binexpr type");
2318 * Handle the assume optimizer hint: check if a Confirm
2319 * node can be created.
2321 * @param dbi debug info
2322 * @param expr the IL assume expression
2324 * we support here only some simple cases:
2329 static ir_node *handle_assume_compare(dbg_info *dbi,
2330 const binary_expression_t *expression)
2332 expression_t *op1 = expression->left;
2333 expression_t *op2 = expression->right;
2334 entity_t *var2, *var = NULL;
2335 ir_node *res = NULL;
2338 cmp_val = get_pnc(expression->base.kind, op1->base.type);
2340 if (is_local_variable(op1) && is_local_variable(op2)) {
2341 var = op1->reference.entity;
2342 var2 = op2->reference.entity;
2344 type_t *const type = skip_typeref(var->declaration.type);
2345 ir_mode *const mode = get_ir_mode_storage(type);
2347 ir_node *const irn1 = get_value(var->variable.v.value_number, mode);
2348 ir_node *const irn2 = get_value(var2->variable.v.value_number, mode);
2350 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
2351 set_value(var2->variable.v.value_number, res);
2353 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
2354 set_value(var->variable.v.value_number, res);
2360 if (is_local_variable(op1) && is_constant_expression(op2)) {
2361 var = op1->reference.entity;
2363 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2364 cmp_val = get_inversed_pnc(cmp_val);
2365 var = op2->reference.entity;
2370 type_t *const type = skip_typeref(var->declaration.type);
2371 ir_mode *const mode = get_ir_mode_storage(type);
2373 res = get_value(var->variable.v.value_number, mode);
2374 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2375 set_value(var->variable.v.value_number, res);
2381 * Handle the assume optimizer hint.
2383 * @param dbi debug info
2384 * @param expr the IL assume expression
2386 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression)
2388 switch(expression->kind) {
2389 case EXPR_BINARY_EQUAL:
2390 case EXPR_BINARY_NOTEQUAL:
2391 case EXPR_BINARY_LESS:
2392 case EXPR_BINARY_LESSEQUAL:
2393 case EXPR_BINARY_GREATER:
2394 case EXPR_BINARY_GREATEREQUAL:
2395 return handle_assume_compare(dbi, &expression->binary);
2401 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2403 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2404 type_t *type = skip_typeref(expression->base.type);
2406 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2407 return expression_to_addr(expression->value);
2409 const expression_t *value = expression->value;
2411 switch(expression->base.kind) {
2412 case EXPR_UNARY_NEGATE: {
2413 ir_node *value_node = expression_to_firm(value);
2414 ir_mode *mode = get_ir_mode_arithmetic(type);
2415 return new_d_Minus(dbgi, value_node, mode);
2417 case EXPR_UNARY_PLUS:
2418 return expression_to_firm(value);
2419 case EXPR_UNARY_BITWISE_NEGATE: {
2420 ir_node *value_node = expression_to_firm(value);
2421 ir_mode *mode = get_ir_mode_arithmetic(type);
2422 return new_d_Not(dbgi, value_node, mode);
2424 case EXPR_UNARY_NOT: {
2425 ir_node *value_node = _expression_to_firm(value);
2426 value_node = create_conv(dbgi, value_node, mode_b);
2427 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2430 case EXPR_UNARY_DEREFERENCE: {
2431 ir_node *value_node = expression_to_firm(value);
2432 type_t *value_type = skip_typeref(value->base.type);
2433 assert(is_type_pointer(value_type));
2435 /* check for __based */
2436 const variable_t *const base_var = value_type->pointer.base_variable;
2437 if (base_var != NULL) {
2438 ir_node *const addr = get_global_var_address(dbgi, base_var);
2439 ir_node *const base = deref_address(dbgi, base_var->base.type, addr);
2440 value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(value_type));
2442 type_t *points_to = value_type->pointer.points_to;
2443 return deref_address(dbgi, points_to, value_node);
2445 case EXPR_UNARY_POSTFIX_INCREMENT:
2446 case EXPR_UNARY_POSTFIX_DECREMENT:
2447 case EXPR_UNARY_PREFIX_INCREMENT:
2448 case EXPR_UNARY_PREFIX_DECREMENT:
2449 return create_incdec(expression);
2450 case EXPR_UNARY_CAST: {
2451 ir_node *value_node = expression_to_firm(value);
2452 if (is_type_scalar(type)) {
2453 ir_mode *mode = get_ir_mode_storage(type);
2454 type_t *from_type = skip_typeref(value->base.type);
2455 /* check for conversion from / to __based types */
2456 if (is_type_pointer(type) && is_type_pointer(from_type)) {
2457 const variable_t *from_var = from_type->pointer.base_variable;
2458 const variable_t *to_var = type->pointer.base_variable;
2459 if (from_var != to_var) {
2460 if (from_var != NULL) {
2461 ir_node *const addr = get_global_var_address(dbgi, from_var);
2462 ir_node *const base = deref_address(dbgi, from_var->base.type, addr);
2463 value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(from_type));
2465 if (to_var != NULL) {
2466 ir_node *const addr = get_global_var_address(dbgi, to_var);
2467 ir_node *const base = deref_address(dbgi, to_var->base.type, addr);
2468 value_node = new_d_Sub(dbgi, value_node, base, mode);
2472 ir_node *node = create_conv(dbgi, value_node, mode);
2473 node = do_strict_conv(dbgi, node);
2474 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
2475 node = create_conv(dbgi, node, mode_arith);
2478 /* make sure firm type is constructed */
2479 (void) get_ir_type(type);
2483 case EXPR_UNARY_CAST_IMPLICIT: {
2484 ir_node *value_node = expression_to_firm(value);
2485 if (is_type_scalar(type)) {
2486 ir_mode *mode = get_ir_mode_storage(type);
2487 ir_node *res = create_conv(dbgi, value_node, mode);
2488 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
2489 res = create_conv(dbgi, res, mode_arith);
2495 case EXPR_UNARY_ASSUME:
2496 if (firm_opt.confirm)
2497 return handle_assume(dbgi, value);
2504 panic("invalid UNEXPR type found");
2508 * produces a 0/1 depending of the value of a mode_b node
2510 static ir_node *produce_condition_result(const expression_t *expression,
2511 ir_mode *mode, dbg_info *dbgi)
2513 ir_node *cur_block = get_cur_block();
2515 ir_node *one_block = new_immBlock();
2516 set_cur_block(one_block);
2517 ir_node *one = new_Const(get_mode_one(mode));
2518 ir_node *jmp_one = new_d_Jmp(dbgi);
2520 ir_node *zero_block = new_immBlock();
2521 set_cur_block(zero_block);
2522 ir_node *zero = new_Const(get_mode_null(mode));
2523 ir_node *jmp_zero = new_d_Jmp(dbgi);
2525 set_cur_block(cur_block);
2526 create_condition_evaluation(expression, one_block, zero_block);
2527 mature_immBlock(one_block);
2528 mature_immBlock(zero_block);
2530 ir_node *in_cf[2] = { jmp_one, jmp_zero };
2531 new_Block(2, in_cf);
2533 ir_node *in[2] = { one, zero };
2534 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2539 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2540 ir_node *value, type_t *type)
2542 ir_mode *const mode = get_ir_mode_arithmetic(type_ptrdiff_t);
2543 assert(is_type_pointer(type));
2544 pointer_type_t *const pointer_type = &type->pointer;
2545 type_t *const points_to = skip_typeref(pointer_type->points_to);
2546 ir_node * elem_size = get_type_size_node(points_to);
2547 elem_size = create_conv(dbgi, elem_size, mode);
2548 value = create_conv(dbgi, value, mode);
2549 ir_node *const mul = new_d_Mul(dbgi, value, elem_size, mode);
2553 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2554 ir_node *left, ir_node *right)
2557 type_t *type_left = skip_typeref(expression->left->base.type);
2558 type_t *type_right = skip_typeref(expression->right->base.type);
2560 expression_kind_t kind = expression->base.kind;
2563 case EXPR_BINARY_SHIFTLEFT:
2564 case EXPR_BINARY_SHIFTRIGHT:
2565 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2566 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2567 mode = get_irn_mode(left);
2568 right = create_conv(dbgi, right, mode_uint);
2571 case EXPR_BINARY_SUB:
2572 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2573 const pointer_type_t *const ptr_type = &type_left->pointer;
2575 mode = get_ir_mode_arithmetic(expression->base.type);
2576 ir_node *const elem_size = get_type_size_node(ptr_type->points_to);
2577 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2578 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2579 ir_node *const no_mem = new_NoMem();
2580 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2581 mode, op_pin_state_floats);
2582 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2585 case EXPR_BINARY_SUB_ASSIGN:
2586 if (is_type_pointer(type_left)) {
2587 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2588 mode = get_ir_mode_arithmetic(type_left);
2593 case EXPR_BINARY_ADD:
2594 case EXPR_BINARY_ADD_ASSIGN:
2595 if (is_type_pointer(type_left)) {
2596 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2597 mode = get_ir_mode_arithmetic(type_left);
2599 } else if (is_type_pointer(type_right)) {
2600 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2601 mode = get_ir_mode_arithmetic(type_right);
2608 mode = get_ir_mode_arithmetic(type_right);
2609 left = create_conv(dbgi, left, mode);
2614 case EXPR_BINARY_ADD_ASSIGN:
2615 case EXPR_BINARY_ADD:
2616 return new_d_Add(dbgi, left, right, mode);
2617 case EXPR_BINARY_SUB_ASSIGN:
2618 case EXPR_BINARY_SUB:
2619 return new_d_Sub(dbgi, left, right, mode);
2620 case EXPR_BINARY_MUL_ASSIGN:
2621 case EXPR_BINARY_MUL:
2622 return new_d_Mul(dbgi, left, right, mode);
2623 case EXPR_BINARY_BITWISE_AND:
2624 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2625 return new_d_And(dbgi, left, right, mode);
2626 case EXPR_BINARY_BITWISE_OR:
2627 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2628 return new_d_Or(dbgi, left, right, mode);
2629 case EXPR_BINARY_BITWISE_XOR:
2630 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2631 return new_d_Eor(dbgi, left, right, mode);
2632 case EXPR_BINARY_SHIFTLEFT:
2633 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2634 return new_d_Shl(dbgi, left, right, mode);
2635 case EXPR_BINARY_SHIFTRIGHT:
2636 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2637 if (mode_is_signed(mode)) {
2638 return new_d_Shrs(dbgi, left, right, mode);
2640 return new_d_Shr(dbgi, left, right, mode);
2642 case EXPR_BINARY_DIV:
2643 case EXPR_BINARY_DIV_ASSIGN: {
2644 ir_node *pin = new_Pin(new_NoMem());
2647 if (mode_is_float(mode)) {
2648 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2649 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2651 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2652 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2656 case EXPR_BINARY_MOD:
2657 case EXPR_BINARY_MOD_ASSIGN: {
2658 ir_node *pin = new_Pin(new_NoMem());
2659 assert(!mode_is_float(mode));
2660 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2661 op_pin_state_floats);
2662 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2666 panic("unexpected expression kind");
2670 static ir_node *create_lazy_op(const binary_expression_t *expression)
2672 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2673 type_t *type = skip_typeref(expression->base.type);
2674 ir_mode *mode = get_ir_mode_arithmetic(type);
2676 if (is_constant_expression(expression->left)) {
2677 bool val = fold_constant_to_bool(expression->left);
2678 expression_kind_t ekind = expression->base.kind;
2679 assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
2680 if (ekind == EXPR_BINARY_LOGICAL_AND) {
2682 return new_Const(get_mode_null(mode));
2686 return new_Const(get_mode_one(mode));
2690 if (is_constant_expression(expression->right)) {
2691 bool valr = fold_constant_to_bool(expression->right);
2693 new_Const(get_mode_one(mode)) :
2694 new_Const(get_mode_null(mode));
2697 return produce_condition_result(expression->right, mode, dbgi);
2700 return produce_condition_result((const expression_t*) expression, mode,
2704 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2705 ir_node *right, ir_mode *mode);
2707 static ir_node *create_assign_binop(const binary_expression_t *expression)
2709 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2710 const expression_t *left_expr = expression->left;
2711 type_t *type = skip_typeref(left_expr->base.type);
2712 ir_mode *left_mode = get_ir_mode_storage(type);
2713 ir_node *right = expression_to_firm(expression->right);
2714 ir_node *left_addr = expression_to_addr(left_expr);
2715 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2716 ir_node *result = create_op(dbgi, expression, left, right);
2718 result = create_conv(dbgi, result, left_mode);
2719 result = do_strict_conv(dbgi, result);
2721 result = set_value_for_expression_addr(left_expr, result, left_addr);
2723 if (!is_type_compound(type)) {
2724 ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
2725 result = create_conv(dbgi, result, mode_arithmetic);
2730 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2732 expression_kind_t kind = expression->base.kind;
2735 case EXPR_BINARY_EQUAL:
2736 case EXPR_BINARY_NOTEQUAL:
2737 case EXPR_BINARY_LESS:
2738 case EXPR_BINARY_LESSEQUAL:
2739 case EXPR_BINARY_GREATER:
2740 case EXPR_BINARY_GREATEREQUAL:
2741 case EXPR_BINARY_ISGREATER:
2742 case EXPR_BINARY_ISGREATEREQUAL:
2743 case EXPR_BINARY_ISLESS:
2744 case EXPR_BINARY_ISLESSEQUAL:
2745 case EXPR_BINARY_ISLESSGREATER:
2746 case EXPR_BINARY_ISUNORDERED: {
2747 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2748 ir_node *left = expression_to_firm(expression->left);
2749 ir_node *right = expression_to_firm(expression->right);
2750 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2751 long pnc = get_pnc(kind, expression->left->base.type);
2752 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2755 case EXPR_BINARY_ASSIGN: {
2756 ir_node *addr = expression_to_addr(expression->left);
2757 ir_node *right = expression_to_firm(expression->right);
2759 = set_value_for_expression_addr(expression->left, right, addr);
2761 type_t *type = skip_typeref(expression->base.type);
2762 if (!is_type_compound(type)) {
2763 ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
2764 res = create_conv(NULL, res, mode_arithmetic);
2768 case EXPR_BINARY_ADD:
2769 case EXPR_BINARY_SUB:
2770 case EXPR_BINARY_MUL:
2771 case EXPR_BINARY_DIV:
2772 case EXPR_BINARY_MOD:
2773 case EXPR_BINARY_BITWISE_AND:
2774 case EXPR_BINARY_BITWISE_OR:
2775 case EXPR_BINARY_BITWISE_XOR:
2776 case EXPR_BINARY_SHIFTLEFT:
2777 case EXPR_BINARY_SHIFTRIGHT:
2779 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2780 ir_node *left = expression_to_firm(expression->left);
2781 ir_node *right = expression_to_firm(expression->right);
2782 return create_op(dbgi, expression, left, right);
2784 case EXPR_BINARY_LOGICAL_AND:
2785 case EXPR_BINARY_LOGICAL_OR:
2786 return create_lazy_op(expression);
2787 case EXPR_BINARY_COMMA:
2788 /* create side effects of left side */
2789 (void) expression_to_firm(expression->left);
2790 return _expression_to_firm(expression->right);
2792 case EXPR_BINARY_ADD_ASSIGN:
2793 case EXPR_BINARY_SUB_ASSIGN:
2794 case EXPR_BINARY_MUL_ASSIGN:
2795 case EXPR_BINARY_MOD_ASSIGN:
2796 case EXPR_BINARY_DIV_ASSIGN:
2797 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2798 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2799 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2800 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2801 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2802 return create_assign_binop(expression);
2804 panic("TODO binexpr type");
2808 static ir_node *array_access_addr(const array_access_expression_t *expression)
2810 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2811 ir_node *base_addr = expression_to_firm(expression->array_ref);
2812 ir_node *offset = expression_to_firm(expression->index);
2813 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2814 ir_node *real_offset = adjust_for_pointer_arithmetic(dbgi, offset, ref_type);
2815 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2820 static ir_node *array_access_to_firm(
2821 const array_access_expression_t *expression)
2823 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2824 ir_node *addr = array_access_addr(expression);
2825 type_t *type = revert_automatic_type_conversion(
2826 (const expression_t*) expression);
2827 type = skip_typeref(type);
2829 return deref_address(dbgi, type, addr);
2832 static long get_offsetof_offset(const offsetof_expression_t *expression)
2834 type_t *orig_type = expression->type;
2837 designator_t *designator = expression->designator;
2838 for ( ; designator != NULL; designator = designator->next) {
2839 type_t *type = skip_typeref(orig_type);
2840 /* be sure the type is constructed */
2841 (void) get_ir_type(type);
2843 if (designator->symbol != NULL) {
2844 assert(is_type_compound(type));
2845 symbol_t *symbol = designator->symbol;
2847 compound_t *compound = type->compound.compound;
2848 entity_t *iter = compound->members.entities;
2849 for ( ; iter != NULL; iter = iter->base.next) {
2850 if (iter->base.symbol == symbol) {
2854 assert(iter != NULL);
2856 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
2857 assert(iter->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2858 offset += get_entity_offset(iter->compound_member.entity);
2860 orig_type = iter->declaration.type;
2862 expression_t *array_index = designator->array_index;
2863 assert(designator->array_index != NULL);
2864 assert(is_type_array(type));
2866 long index = fold_constant_to_int(array_index);
2867 ir_type *arr_type = get_ir_type(type);
2868 ir_type *elem_type = get_array_element_type(arr_type);
2869 long elem_size = get_type_size_bytes(elem_type);
2871 offset += index * elem_size;
2873 orig_type = type->array.element_type;
2880 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2882 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2883 long offset = get_offsetof_offset(expression);
2884 tarval *tv = new_tarval_from_long(offset, mode);
2885 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2887 return new_d_Const(dbgi, tv);
2890 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2891 ir_entity *entity, type_t *type);
2893 static ir_node *compound_literal_to_firm(
2894 const compound_literal_expression_t *expression)
2896 type_t *type = expression->type;
2898 /* create an entity on the stack */
2899 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2901 ident *const id = id_unique("CompLit.%u");
2902 ir_type *const irtype = get_ir_type(type);
2903 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2904 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2905 set_entity_ld_ident(entity, id);
2907 set_entity_variability(entity, variability_uninitialized);
2909 /* create initialisation code */
2910 initializer_t *initializer = expression->initializer;
2911 create_local_initializer(initializer, dbgi, entity, type);
2913 /* create a sel for the compound literal address */
2914 ir_node *frame = get_irg_frame(current_ir_graph);
2915 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2920 * Transform a sizeof expression into Firm code.
2922 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2924 type_t *const type = skip_typeref(expression->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 if (entity->kind == ENTITY_FUNCTION) {
4609 (void)get_function_entity(entity, NULL);
4611 create_local_static_variable(entity);
4614 case STORAGE_CLASS_EXTERN:
4615 if (entity->kind == ENTITY_FUNCTION) {
4616 assert(entity->function.statement == NULL);
4617 (void)get_function_entity(entity, NULL);
4619 create_global_variable(entity);
4620 create_variable_initializer(entity);
4623 case STORAGE_CLASS_NONE:
4624 case STORAGE_CLASS_AUTO:
4625 case STORAGE_CLASS_REGISTER:
4626 if (entity->kind == ENTITY_FUNCTION) {
4627 if (entity->function.statement != NULL) {
4628 ir_type *owner = get_irg_frame_type(current_ir_graph);
4629 (void)get_function_entity(entity, owner);
4630 entity->declaration.kind = DECLARATION_KIND_INNER_FUNCTION;
4631 enqueue_inner_function(entity);
4633 (void)get_function_entity(entity, NULL);
4636 create_local_variable(entity);
4639 case STORAGE_CLASS_TYPEDEF:
4642 panic("invalid storage class found");
4645 static void initialize_local_declaration(entity_t *entity)
4647 if (entity->base.symbol == NULL)
4650 // no need to emit code in dead blocks
4651 if (entity->declaration.storage_class != STORAGE_CLASS_STATIC
4652 && get_cur_block() == NULL)
4655 switch ((declaration_kind_t) entity->declaration.kind) {
4656 case DECLARATION_KIND_LOCAL_VARIABLE:
4657 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4658 create_variable_initializer(entity);
4661 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4662 allocate_variable_length_array(entity);
4665 case DECLARATION_KIND_COMPOUND_MEMBER:
4666 case DECLARATION_KIND_GLOBAL_VARIABLE:
4667 case DECLARATION_KIND_FUNCTION:
4668 case DECLARATION_KIND_INNER_FUNCTION:
4671 case DECLARATION_KIND_PARAMETER:
4672 case DECLARATION_KIND_PARAMETER_ENTITY:
4673 panic("can't initialize parameters");
4675 case DECLARATION_KIND_UNKNOWN:
4676 panic("can't initialize unknown declaration");
4678 panic("invalid declaration kind");
4681 static void declaration_statement_to_firm(declaration_statement_t *statement)
4683 entity_t *entity = statement->declarations_begin;
4687 entity_t *const last = statement->declarations_end;
4688 for ( ;; entity = entity->base.next) {
4689 if (is_declaration(entity)) {
4690 initialize_local_declaration(entity);
4691 } else if (entity->kind == ENTITY_TYPEDEF) {
4692 /* ยง6.7.7:3 Any array size expressions associated with variable length
4693 * array declarators are evaluated each time the declaration of the
4694 * typedef name is reached in the order of execution. */
4695 type_t *const type = skip_typeref(entity->typedefe.type);
4696 if (is_type_array(type) && type->array.is_vla)
4697 get_vla_size(&type->array);
4704 static void if_statement_to_firm(if_statement_t *statement)
4706 ir_node *cur_block = get_cur_block();
4708 ir_node *fallthrough_block = NULL;
4710 /* the true (blocks) */
4711 ir_node *true_block = NULL;
4712 if (statement->true_statement != NULL) {
4713 true_block = new_immBlock();
4714 set_cur_block(true_block);
4715 statement_to_firm(statement->true_statement);
4716 if (get_cur_block() != NULL) {
4717 ir_node *jmp = new_Jmp();
4718 if (fallthrough_block == NULL)
4719 fallthrough_block = new_immBlock();
4720 add_immBlock_pred(fallthrough_block, jmp);
4724 /* the false (blocks) */
4725 ir_node *false_block = NULL;
4726 if (statement->false_statement != NULL) {
4727 false_block = new_immBlock();
4728 set_cur_block(false_block);
4730 statement_to_firm(statement->false_statement);
4731 if (get_cur_block() != NULL) {
4732 ir_node *jmp = new_Jmp();
4733 if (fallthrough_block == NULL)
4734 fallthrough_block = new_immBlock();
4735 add_immBlock_pred(fallthrough_block, jmp);
4739 /* create the condition */
4740 if (cur_block != NULL) {
4741 if (true_block == NULL || false_block == NULL) {
4742 if (fallthrough_block == NULL)
4743 fallthrough_block = new_immBlock();
4744 if (true_block == NULL)
4745 true_block = fallthrough_block;
4746 if (false_block == NULL)
4747 false_block = fallthrough_block;
4750 set_cur_block(cur_block);
4751 create_condition_evaluation(statement->condition, true_block,
4755 mature_immBlock(true_block);
4756 if (false_block != fallthrough_block && false_block != NULL) {
4757 mature_immBlock(false_block);
4759 if (fallthrough_block != NULL) {
4760 mature_immBlock(fallthrough_block);
4763 set_cur_block(fallthrough_block);
4766 static void while_statement_to_firm(while_statement_t *statement)
4768 ir_node *jmp = NULL;
4769 if (get_cur_block() != NULL) {
4773 /* create the header block */
4774 ir_node *header_block = new_immBlock();
4776 add_immBlock_pred(header_block, jmp);
4780 ir_node *old_continue_label = continue_label;
4781 ir_node *old_break_label = break_label;
4782 continue_label = header_block;
4785 ir_node *body_block = new_immBlock();
4786 set_cur_block(body_block);
4787 statement_to_firm(statement->body);
4788 ir_node *false_block = break_label;
4790 assert(continue_label == header_block);
4791 continue_label = old_continue_label;
4792 break_label = old_break_label;
4794 if (get_cur_block() != NULL) {
4796 add_immBlock_pred(header_block, jmp);
4799 /* shortcut for while(true) */
4800 if (is_constant_expression(statement->condition)
4801 && fold_constant_to_bool(statement->condition) != 0) {
4802 set_cur_block(header_block);
4803 ir_node *header_jmp = new_Jmp();
4804 add_immBlock_pred(body_block, header_jmp);
4806 keep_alive(body_block);
4807 keep_all_memory(body_block);
4808 set_cur_block(body_block);
4810 if (false_block == NULL) {
4811 false_block = new_immBlock();
4814 /* create the condition */
4815 set_cur_block(header_block);
4817 create_condition_evaluation(statement->condition, body_block,
4821 mature_immBlock(body_block);
4822 mature_immBlock(header_block);
4823 if (false_block != NULL) {
4824 mature_immBlock(false_block);
4827 set_cur_block(false_block);
4830 static void do_while_statement_to_firm(do_while_statement_t *statement)
4832 ir_node *jmp = NULL;
4833 if (get_cur_block() != NULL) {
4837 /* create the header block */
4838 ir_node *header_block = new_immBlock();
4841 ir_node *body_block = new_immBlock();
4843 add_immBlock_pred(body_block, jmp);
4846 ir_node *old_continue_label = continue_label;
4847 ir_node *old_break_label = break_label;
4848 continue_label = header_block;
4851 set_cur_block(body_block);
4852 statement_to_firm(statement->body);
4853 ir_node *false_block = break_label;
4855 assert(continue_label == header_block);
4856 continue_label = old_continue_label;
4857 break_label = old_break_label;
4859 if (get_cur_block() != NULL) {
4860 ir_node *body_jmp = new_Jmp();
4861 add_immBlock_pred(header_block, body_jmp);
4862 mature_immBlock(header_block);
4865 if (false_block == NULL) {
4866 false_block = new_immBlock();
4869 /* create the condition */
4870 set_cur_block(header_block);
4872 create_condition_evaluation(statement->condition, body_block, false_block);
4873 mature_immBlock(body_block);
4874 mature_immBlock(header_block);
4875 mature_immBlock(false_block);
4877 set_cur_block(false_block);
4880 static void for_statement_to_firm(for_statement_t *statement)
4882 ir_node *jmp = NULL;
4884 /* create declarations */
4885 entity_t *entity = statement->scope.entities;
4886 for ( ; entity != NULL; entity = entity->base.next) {
4887 if (!is_declaration(entity))
4890 create_local_declaration(entity);
4893 if (get_cur_block() != NULL) {
4894 entity = statement->scope.entities;
4895 for ( ; entity != NULL; entity = entity->base.next) {
4896 if (!is_declaration(entity))
4899 initialize_local_declaration(entity);
4902 if (statement->initialisation != NULL) {
4903 expression_to_firm(statement->initialisation);
4910 /* create the step block */
4911 ir_node *const step_block = new_immBlock();
4912 set_cur_block(step_block);
4913 if (statement->step != NULL) {
4914 expression_to_firm(statement->step);
4916 ir_node *const step_jmp = new_Jmp();
4918 /* create the header block */
4919 ir_node *const header_block = new_immBlock();
4920 set_cur_block(header_block);
4922 add_immBlock_pred(header_block, jmp);
4924 add_immBlock_pred(header_block, step_jmp);
4926 /* the false block */
4927 ir_node *const false_block = new_immBlock();
4930 ir_node *body_block;
4931 if (statement->body != NULL) {
4932 ir_node *const old_continue_label = continue_label;
4933 ir_node *const old_break_label = break_label;
4934 continue_label = step_block;
4935 break_label = false_block;
4937 body_block = new_immBlock();
4938 set_cur_block(body_block);
4939 statement_to_firm(statement->body);
4941 assert(continue_label == step_block);
4942 assert(break_label == false_block);
4943 continue_label = old_continue_label;
4944 break_label = old_break_label;
4946 if (get_cur_block() != NULL) {
4948 add_immBlock_pred(step_block, jmp);
4951 body_block = step_block;
4954 /* create the condition */
4955 set_cur_block(header_block);
4956 if (statement->condition != NULL) {
4957 create_condition_evaluation(statement->condition, body_block,
4960 keep_alive(header_block);
4961 keep_all_memory(header_block);
4963 add_immBlock_pred(body_block, jmp);
4966 mature_immBlock(body_block);
4967 mature_immBlock(false_block);
4968 mature_immBlock(step_block);
4969 mature_immBlock(header_block);
4970 mature_immBlock(false_block);
4972 set_cur_block(false_block);
4975 static void create_jump_statement(const statement_t *statement,
4976 ir_node *target_block)
4978 if (get_cur_block() == NULL)
4981 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4982 ir_node *jump = new_d_Jmp(dbgi);
4983 add_immBlock_pred(target_block, jump);
4985 set_cur_block(NULL);
4988 static ir_node *get_break_label(void)
4990 if (break_label == NULL) {
4991 break_label = new_immBlock();
4996 static void switch_statement_to_firm(switch_statement_t *statement)
4998 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5000 ir_node *expression = expression_to_firm(statement->expression);
5001 ir_node *cond = new_d_Cond(dbgi, expression);
5003 set_cur_block(NULL);
5005 ir_node *const old_switch_cond = current_switch_cond;
5006 ir_node *const old_break_label = break_label;
5007 const bool old_saw_default_label = saw_default_label;
5008 saw_default_label = false;
5009 current_switch_cond = cond;
5011 switch_statement_t *const old_switch = current_switch;
5012 current_switch = statement;
5014 /* determine a free number for the default label */
5015 unsigned long num_cases = 0;
5017 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
5018 if (l->expression == NULL) {
5022 if (l->last_case >= l->first_case)
5023 num_cases += l->last_case - l->first_case + 1;
5024 if (l->last_case > def_nr)
5025 def_nr = l->last_case;
5028 if (def_nr == INT_MAX) {
5029 /* Bad: an overflow will occur, we cannot be sure that the
5030 * maximum + 1 is a free number. Scan the values a second
5031 * time to find a free number.
5033 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
5035 memset(bits, 0, (num_cases + 7) >> 3);
5036 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
5037 if (l->expression == NULL) {
5041 unsigned long start = l->first_case > 0 ? (unsigned long)l->first_case : 0;
5042 if (start < num_cases && l->last_case >= 0) {
5043 unsigned long end = (unsigned long)l->last_case < num_cases ?
5044 (unsigned long)l->last_case : num_cases - 1;
5045 for (unsigned long cns = start; cns <= end; ++cns) {
5046 bits[cns >> 3] |= (1 << (cns & 7));
5050 /* We look at the first num_cases constants:
5051 * Either they are dense, so we took the last (num_cases)
5052 * one, or they are not dense, so we will find one free
5056 for (i = 0; i < num_cases; ++i)
5057 if ((bits[i >> 3] & (1 << (i & 7))) == 0)
5065 statement->default_proj_nr = def_nr;
5067 if (statement->body != NULL) {
5068 statement_to_firm(statement->body);
5071 if (get_cur_block() != NULL) {
5072 ir_node *jmp = new_Jmp();
5073 add_immBlock_pred(get_break_label(), jmp);
5076 if (!saw_default_label) {
5077 set_cur_block(get_nodes_block(cond));
5078 ir_node *const proj = new_d_defaultProj(dbgi, cond,
5079 statement->default_proj_nr);
5080 add_immBlock_pred(get_break_label(), proj);
5083 if (break_label != NULL) {
5084 mature_immBlock(break_label);
5086 set_cur_block(break_label);
5088 assert(current_switch_cond == cond);
5089 current_switch = old_switch;
5090 current_switch_cond = old_switch_cond;
5091 break_label = old_break_label;
5092 saw_default_label = old_saw_default_label;
5095 static void case_label_to_firm(const case_label_statement_t *statement)
5097 if (statement->is_empty_range)
5100 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5102 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
5105 ir_node *block = new_immBlock();
5107 set_cur_block(get_nodes_block(current_switch_cond));
5108 if (statement->expression != NULL) {
5109 long pn = statement->first_case;
5110 long end_pn = statement->last_case;
5111 assert(pn <= end_pn);
5112 /* create jumps for all cases in the given range */
5114 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
5115 add_immBlock_pred(block, proj);
5116 } while (pn++ < end_pn);
5118 saw_default_label = true;
5119 proj = new_d_defaultProj(dbgi, current_switch_cond,
5120 current_switch->default_proj_nr);
5122 add_immBlock_pred(block, proj);
5125 if (fallthrough != NULL) {
5126 add_immBlock_pred(block, fallthrough);
5128 mature_immBlock(block);
5129 set_cur_block(block);
5131 if (statement->statement != NULL) {
5132 statement_to_firm(statement->statement);
5136 static void label_to_firm(const label_statement_t *statement)
5138 ir_node *block = get_label_block(statement->label);
5140 if (get_cur_block() != NULL) {
5141 ir_node *jmp = new_Jmp();
5142 add_immBlock_pred(block, jmp);
5145 set_cur_block(block);
5147 keep_all_memory(block);
5149 if (statement->statement != NULL) {
5150 statement_to_firm(statement->statement);
5154 static void goto_to_firm(const goto_statement_t *statement)
5156 if (get_cur_block() == NULL)
5159 if (statement->expression) {
5160 ir_node *irn = expression_to_firm(statement->expression);
5161 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5162 ir_node *ijmp = new_d_IJmp(dbgi, irn);
5164 set_irn_link(ijmp, ijmp_list);
5167 ir_node *block = get_label_block(statement->label);
5168 ir_node *jmp = new_Jmp();
5169 add_immBlock_pred(block, jmp);
5171 set_cur_block(NULL);
5174 static void asm_statement_to_firm(const asm_statement_t *statement)
5176 bool needs_memory = false;
5178 if (statement->is_volatile) {
5179 needs_memory = true;
5182 size_t n_clobbers = 0;
5183 asm_clobber_t *clobber = statement->clobbers;
5184 for ( ; clobber != NULL; clobber = clobber->next) {
5185 const char *clobber_str = clobber->clobber.begin;
5187 if (!be_is_valid_clobber(clobber_str)) {
5188 errorf(&statement->base.source_position,
5189 "invalid clobber '%s' specified", clobber->clobber);
5193 if (strcmp(clobber_str, "memory") == 0) {
5194 needs_memory = true;
5198 ident *id = new_id_from_str(clobber_str);
5199 obstack_ptr_grow(&asm_obst, id);
5202 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
5203 ident **clobbers = NULL;
5204 if (n_clobbers > 0) {
5205 clobbers = obstack_finish(&asm_obst);
5208 size_t n_inputs = 0;
5209 asm_argument_t *argument = statement->inputs;
5210 for ( ; argument != NULL; argument = argument->next)
5212 size_t n_outputs = 0;
5213 argument = statement->outputs;
5214 for ( ; argument != NULL; argument = argument->next)
5217 unsigned next_pos = 0;
5219 ir_node *ins[n_inputs + n_outputs + 1];
5222 ir_asm_constraint tmp_in_constraints[n_outputs];
5224 const expression_t *out_exprs[n_outputs];
5225 ir_node *out_addrs[n_outputs];
5226 size_t out_size = 0;
5228 argument = statement->outputs;
5229 for ( ; argument != NULL; argument = argument->next) {
5230 const char *constraints = argument->constraints.begin;
5231 asm_constraint_flags_t asm_flags
5232 = be_parse_asm_constraints(constraints);
5234 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5235 warningf(&statement->base.source_position,
5236 "some constraints in '%s' are not supported", constraints);
5238 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5239 errorf(&statement->base.source_position,
5240 "some constraints in '%s' are invalid", constraints);
5243 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
5244 errorf(&statement->base.source_position,
5245 "no write flag specified for output constraints '%s'",
5250 unsigned pos = next_pos++;
5251 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5252 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5253 expression_t *expr = argument->expression;
5254 ir_node *addr = expression_to_addr(expr);
5255 /* in+output, construct an artifical same_as constraint on the
5257 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
5259 ir_node *value = get_value_from_lvalue(expr, addr);
5261 snprintf(buf, sizeof(buf), "%u", pos);
5263 ir_asm_constraint constraint;
5264 constraint.pos = pos;
5265 constraint.constraint = new_id_from_str(buf);
5266 constraint.mode = get_ir_mode_storage(expr->base.type);
5267 tmp_in_constraints[in_size] = constraint;
5268 ins[in_size] = value;
5273 out_exprs[out_size] = expr;
5274 out_addrs[out_size] = addr;
5276 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5277 /* pure memory ops need no input (but we have to make sure we
5278 * attach to the memory) */
5279 assert(! (asm_flags &
5280 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5281 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5282 needs_memory = true;
5284 /* we need to attach the address to the inputs */
5285 expression_t *expr = argument->expression;
5287 ir_asm_constraint constraint;
5288 constraint.pos = pos;
5289 constraint.constraint = new_id_from_str(constraints);
5290 constraint.mode = NULL;
5291 tmp_in_constraints[in_size] = constraint;
5293 ins[in_size] = expression_to_addr(expr);
5297 errorf(&statement->base.source_position,
5298 "only modifiers but no place set in constraints '%s'",
5303 ir_asm_constraint constraint;
5304 constraint.pos = pos;
5305 constraint.constraint = new_id_from_str(constraints);
5306 constraint.mode = get_ir_mode_storage(argument->expression->base.type);
5308 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5310 assert(obstack_object_size(&asm_obst)
5311 == out_size * sizeof(ir_asm_constraint));
5312 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
5315 obstack_grow(&asm_obst, tmp_in_constraints,
5316 in_size * sizeof(tmp_in_constraints[0]));
5317 /* find and count input and output arguments */
5318 argument = statement->inputs;
5319 for ( ; argument != NULL; argument = argument->next) {
5320 const char *constraints = argument->constraints.begin;
5321 asm_constraint_flags_t asm_flags
5322 = be_parse_asm_constraints(constraints);
5324 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5325 errorf(&statement->base.source_position,
5326 "some constraints in '%s' are not supported", constraints);
5329 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5330 errorf(&statement->base.source_position,
5331 "some constraints in '%s' are invalid", constraints);
5334 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
5335 errorf(&statement->base.source_position,
5336 "write flag specified for input constraints '%s'",
5342 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5343 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5344 /* we can treat this as "normal" input */
5345 input = expression_to_firm(argument->expression);
5346 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5347 /* pure memory ops need no input (but we have to make sure we
5348 * attach to the memory) */
5349 assert(! (asm_flags &
5350 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5351 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5352 needs_memory = true;
5353 input = expression_to_addr(argument->expression);
5355 errorf(&statement->base.source_position,
5356 "only modifiers but no place set in constraints '%s'",
5361 ir_asm_constraint constraint;
5362 constraint.pos = next_pos++;
5363 constraint.constraint = new_id_from_str(constraints);
5364 constraint.mode = get_irn_mode(input);
5366 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5367 ins[in_size++] = input;
5371 ir_asm_constraint constraint;
5372 constraint.pos = next_pos++;
5373 constraint.constraint = new_id_from_str("");
5374 constraint.mode = mode_M;
5376 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5377 ins[in_size++] = get_store();
5380 assert(obstack_object_size(&asm_obst)
5381 == in_size * sizeof(ir_asm_constraint));
5382 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
5384 /* create asm node */
5385 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5387 ident *asm_text = new_id_from_str(statement->asm_text.begin);
5389 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
5390 out_size, output_constraints,
5391 n_clobbers, clobbers, asm_text);
5393 if (statement->is_volatile) {
5394 set_irn_pinned(node, op_pin_state_pinned);
5396 set_irn_pinned(node, op_pin_state_floats);
5399 /* create output projs & connect them */
5401 ir_node *projm = new_Proj(node, mode_M, out_size+1);
5406 for (i = 0; i < out_size; ++i) {
5407 const expression_t *out_expr = out_exprs[i];
5409 ir_mode *mode = get_ir_mode_storage(out_expr->base.type);
5410 ir_node *proj = new_Proj(node, mode, pn);
5411 ir_node *addr = out_addrs[i];
5413 set_value_for_expression_addr(out_expr, proj, addr);
5417 static void ms_try_statement_to_firm(ms_try_statement_t *statement)
5419 statement_to_firm(statement->try_statement);
5420 warningf(&statement->base.source_position, "structured exception handling ignored");
5423 static void leave_statement_to_firm(leave_statement_t *statement)
5425 errorf(&statement->base.source_position, "__leave not supported yet");
5429 * Transform a statement.
5431 static void statement_to_firm(statement_t *statement)
5434 assert(!statement->base.transformed);
5435 statement->base.transformed = true;
5438 switch (statement->kind) {
5439 case STATEMENT_INVALID:
5440 panic("invalid statement found");
5441 case STATEMENT_EMPTY:
5444 case STATEMENT_COMPOUND:
5445 compound_statement_to_firm(&statement->compound);
5447 case STATEMENT_RETURN:
5448 return_statement_to_firm(&statement->returns);
5450 case STATEMENT_EXPRESSION:
5451 expression_statement_to_firm(&statement->expression);
5454 if_statement_to_firm(&statement->ifs);
5456 case STATEMENT_WHILE:
5457 while_statement_to_firm(&statement->whiles);
5459 case STATEMENT_DO_WHILE:
5460 do_while_statement_to_firm(&statement->do_while);
5462 case STATEMENT_DECLARATION:
5463 declaration_statement_to_firm(&statement->declaration);
5465 case STATEMENT_BREAK:
5466 create_jump_statement(statement, get_break_label());
5468 case STATEMENT_CONTINUE:
5469 create_jump_statement(statement, continue_label);
5471 case STATEMENT_SWITCH:
5472 switch_statement_to_firm(&statement->switchs);
5474 case STATEMENT_CASE_LABEL:
5475 case_label_to_firm(&statement->case_label);
5478 for_statement_to_firm(&statement->fors);
5480 case STATEMENT_LABEL:
5481 label_to_firm(&statement->label);
5483 case STATEMENT_GOTO:
5484 goto_to_firm(&statement->gotos);
5487 asm_statement_to_firm(&statement->asms);
5489 case STATEMENT_MS_TRY:
5490 ms_try_statement_to_firm(&statement->ms_try);
5492 case STATEMENT_LEAVE:
5493 leave_statement_to_firm(&statement->leave);
5496 panic("statement not implemented");
5499 static int count_local_variables(const entity_t *entity,
5500 const entity_t *const last)
5503 entity_t const *const end = last != NULL ? last->base.next : NULL;
5504 for (; entity != end; entity = entity->base.next) {
5508 if (entity->kind == ENTITY_VARIABLE) {
5509 type = skip_typeref(entity->declaration.type);
5510 address_taken = entity->variable.address_taken;
5511 } else if (entity->kind == ENTITY_PARAMETER) {
5512 type = skip_typeref(entity->declaration.type);
5513 address_taken = entity->parameter.address_taken;
5518 if (!address_taken && is_type_scalar(type))
5524 static void count_local_variables_in_stmt(statement_t *stmt, void *const env)
5526 int *const count = env;
5528 switch (stmt->kind) {
5529 case STATEMENT_DECLARATION: {
5530 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5531 *count += count_local_variables(decl_stmt->declarations_begin,
5532 decl_stmt->declarations_end);
5537 *count += count_local_variables(stmt->fors.scope.entities, NULL);
5546 * Return the number of local (alias free) variables used by a function.
5548 static int get_function_n_local_vars(entity_t *entity)
5550 const function_t *function = &entity->function;
5553 /* count parameters */
5554 count += count_local_variables(function->parameters.entities, NULL);
5556 /* count local variables declared in body */
5557 walk_statements(function->statement, count_local_variables_in_stmt, &count);
5562 * Build Firm code for the parameters of a function.
5564 static void initialize_function_parameters(entity_t *entity)
5566 assert(entity->kind == ENTITY_FUNCTION);
5567 ir_graph *irg = current_ir_graph;
5568 ir_node *args = get_irg_args(irg);
5569 ir_node *start_block = get_irg_start_block(irg);
5570 ir_type *function_irtype = get_ir_type(entity->declaration.type);
5571 int first_param_nr = 0;
5573 if (entity->function.need_closure) {
5574 /* add an extra parameter for the static link */
5575 entity->function.static_link = new_r_Proj(irg, start_block, args, mode_P_data, 0);
5580 entity_t *parameter = entity->function.parameters.entities;
5581 for ( ; parameter != NULL; parameter = parameter->base.next, ++n) {
5582 if (parameter->kind != ENTITY_PARAMETER)
5585 assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN);
5586 type_t *type = skip_typeref(parameter->declaration.type);
5588 bool needs_entity = parameter->parameter.address_taken;
5589 assert(!is_type_array(type));
5590 if (is_type_compound(type)) {
5591 needs_entity = true;
5595 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5596 ident *id = new_id_from_str(parameter->base.symbol->string);
5597 set_entity_ident(entity, id);
5599 parameter->declaration.kind
5600 = DECLARATION_KIND_PARAMETER_ENTITY;
5601 parameter->parameter.v.entity = entity;
5605 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5606 ir_mode *param_mode = get_type_mode(param_irtype);
5608 long pn = n + first_param_nr;
5609 ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
5611 ir_mode *mode = get_ir_mode_storage(type);
5612 value = create_conv(NULL, value, mode);
5613 value = do_strict_conv(NULL, value);
5615 parameter->declaration.kind = DECLARATION_KIND_PARAMETER;
5616 parameter->parameter.v.value_number = next_value_number_function;
5617 set_irg_loc_description(current_ir_graph, next_value_number_function,
5619 ++next_value_number_function;
5621 set_value(parameter->parameter.v.value_number, value);
5626 * Handle additional decl modifiers for IR-graphs
5628 * @param irg the IR-graph
5629 * @param dec_modifiers additional modifiers
5631 static void handle_decl_modifier_irg(ir_graph_ptr irg,
5632 decl_modifiers_t decl_modifiers)
5634 if (decl_modifiers & DM_RETURNS_TWICE) {
5635 /* TRUE if the declaration includes __attribute__((returns_twice)) */
5636 set_irg_additional_property(irg, mtp_property_returns_twice);
5638 if (decl_modifiers & DM_NORETURN) {
5639 /* TRUE if the declaration includes the Microsoft
5640 __declspec(noreturn) specifier. */
5641 set_irg_additional_property(irg, mtp_property_noreturn);
5643 if (decl_modifiers & DM_NOTHROW) {
5644 /* TRUE if the declaration includes the Microsoft
5645 __declspec(nothrow) specifier. */
5646 set_irg_additional_property(irg, mtp_property_nothrow);
5648 if (decl_modifiers & DM_NAKED) {
5649 /* TRUE if the declaration includes the Microsoft
5650 __declspec(naked) specifier. */
5651 set_irg_additional_property(irg, mtp_property_naked);
5653 if (decl_modifiers & DM_FORCEINLINE) {
5654 /* TRUE if the declaration includes the
5655 Microsoft __forceinline specifier. */
5656 set_irg_inline_property(irg, irg_inline_forced);
5658 if (decl_modifiers & DM_NOINLINE) {
5659 /* TRUE if the declaration includes the Microsoft
5660 __declspec(noinline) specifier. */
5661 set_irg_inline_property(irg, irg_inline_forbidden);
5665 static void add_function_pointer(ir_type *segment, ir_entity *method,
5666 const char *unique_template)
5668 ir_type *method_type = get_entity_type(method);
5669 ident *id = id_unique(unique_template);
5670 ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code);
5672 ident *ide = id_unique(unique_template);
5673 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5674 ir_graph *irg = get_const_code_irg();
5675 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5678 set_entity_compiler_generated(ptr, 1);
5679 set_entity_variability(ptr, variability_constant);
5680 set_atomic_ent_value(ptr, val);
5684 * Generate possible IJmp branches to a given label block.
5686 static void gen_ijmp_branches(ir_node *block)
5689 for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) {
5690 add_immBlock_pred(block, ijmp);
5695 * Create code for a function and all inner functions.
5697 * @param entity the function entity
5699 static void create_function(entity_t *entity)
5701 assert(entity->kind == ENTITY_FUNCTION);
5702 ir_entity *function_entity = get_function_entity(entity, current_outer_frame);
5704 if (entity->function.statement == NULL)
5707 if (is_main(entity) && firm_opt.os_support == OS_SUPPORT_MINGW) {
5708 prepare_main_collect2(entity);
5711 inner_functions = NULL;
5712 current_trampolines = NULL;
5714 if (entity->declaration.modifiers & DM_CONSTRUCTOR) {
5715 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5716 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5718 if (entity->declaration.modifiers & DM_DESTRUCTOR) {
5719 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5720 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5723 current_function_entity = entity;
5724 current_function_name = NULL;
5725 current_funcsig = NULL;
5727 assert(all_labels == NULL);
5728 all_labels = NEW_ARR_F(label_t *, 0);
5731 int n_local_vars = get_function_n_local_vars(entity);
5732 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5734 ir_graph *old_current_function = current_function;
5735 current_function = irg;
5737 set_irg_fp_model(irg, firm_opt.fp_model);
5738 tarval_enable_fp_ops(1);
5739 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5741 ir_node *first_block = get_cur_block();
5743 /* set inline flags */
5744 if (entity->function.is_inline)
5745 set_irg_inline_property(irg, irg_inline_recomended);
5746 handle_decl_modifier_irg(irg, entity->declaration.modifiers);
5748 next_value_number_function = 0;
5749 initialize_function_parameters(entity);
5750 current_static_link = entity->function.static_link;
5752 statement_to_firm(entity->function.statement);
5754 ir_node *end_block = get_irg_end_block(irg);
5756 /* do we have a return statement yet? */
5757 if (get_cur_block() != NULL) {
5758 type_t *type = skip_typeref(entity->declaration.type);
5759 assert(is_type_function(type));
5760 const function_type_t *func_type = &type->function;
5761 const type_t *return_type
5762 = skip_typeref(func_type->return_type);
5765 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5766 ret = new_Return(get_store(), 0, NULL);
5769 if (is_type_scalar(return_type)) {
5770 mode = get_ir_mode_storage(func_type->return_type);
5776 /* ยง5.1.2.2.3 main implicitly returns 0 */
5777 if (is_main(entity)) {
5778 in[0] = new_Const(get_mode_null(mode));
5780 in[0] = new_Unknown(mode);
5782 ret = new_Return(get_store(), 1, in);
5784 add_immBlock_pred(end_block, ret);
5787 bool has_computed_gotos = false;
5788 for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
5789 label_t *label = all_labels[i];
5790 if (label->address_taken) {
5791 gen_ijmp_branches(label->block);
5792 has_computed_gotos = true;
5794 mature_immBlock(label->block);
5796 if (has_computed_gotos) {
5797 /* if we have computed goto's in the function, we cannot inline it */
5798 if (get_irg_inline_property(irg) >= irg_inline_recomended) {
5799 warningf(&entity->base.source_position,
5800 "function '%Y' can never be inlined because it contains a computed goto",
5801 entity->base.symbol);
5803 set_irg_inline_property(irg, irg_inline_forbidden);
5806 DEL_ARR_F(all_labels);
5809 mature_immBlock(first_block);
5810 mature_immBlock(end_block);
5812 irg_finalize_cons(irg);
5814 /* finalize the frame type */
5815 ir_type *frame_type = get_irg_frame_type(irg);
5816 int n = get_compound_n_members(frame_type);
5819 for (int i = 0; i < n; ++i) {
5820 ir_entity *entity = get_compound_member(frame_type, i);
5821 ir_type *entity_type = get_entity_type(entity);
5823 int align = get_type_alignment_bytes(entity_type);
5824 if (align > align_all)
5828 misalign = offset % align;
5830 offset += align - misalign;
5834 set_entity_offset(entity, offset);
5835 offset += get_type_size_bytes(entity_type);
5837 set_type_size_bytes(frame_type, offset);
5838 set_type_alignment_bytes(frame_type, align_all);
5841 current_function = old_current_function;
5843 if (current_trampolines != NULL) {
5844 DEL_ARR_F(current_trampolines);
5845 current_trampolines = NULL;
5848 /* create inner functions if any */
5849 entity_t **inner = inner_functions;
5850 if (inner != NULL) {
5851 ir_type *rem_outer_frame = current_outer_frame;
5852 current_outer_frame = get_irg_frame_type(current_ir_graph);
5853 ir_type *rem_outer_value_type = current_outer_value_type;
5854 current_outer_value_type = get_irg_value_param_type(current_ir_graph);
5855 for (int i = ARR_LEN(inner) - 1; i >= 0; --i) {
5856 create_function(inner[i]);
5860 current_outer_value_type = rem_outer_value_type;
5861 current_outer_frame = rem_outer_frame;
5865 static void scope_to_firm(scope_t *scope)
5867 /* first pass: create declarations */
5868 entity_t *entity = scope->entities;
5869 for ( ; entity != NULL; entity = entity->base.next) {
5870 if (entity->base.symbol == NULL)
5873 if (entity->kind == ENTITY_FUNCTION) {
5874 if (entity->function.btk != bk_none) {
5875 /* builtins have no representation */
5878 (void)get_function_entity(entity, NULL);
5879 } else if (entity->kind == ENTITY_VARIABLE) {
5880 create_global_variable(entity);
5884 /* second pass: create code/initializers */
5885 entity = scope->entities;
5886 for ( ; entity != NULL; entity = entity->base.next) {
5887 if (entity->base.symbol == NULL)
5890 if (entity->kind == ENTITY_FUNCTION) {
5891 if (entity->function.btk != bk_none) {
5892 /* builtins have no representation */
5895 create_function(entity);
5896 } else if (entity->kind == ENTITY_VARIABLE) {
5897 assert(entity->declaration.kind
5898 == DECLARATION_KIND_GLOBAL_VARIABLE);
5899 current_ir_graph = get_const_code_irg();
5900 create_variable_initializer(entity);
5905 void init_ast2firm(void)
5907 obstack_init(&asm_obst);
5908 init_atomic_modes();
5910 /* OS option must be set to the backend */
5911 switch (firm_opt.os_support) {
5912 case OS_SUPPORT_MINGW:
5913 create_ld_ident = create_name_win32;
5915 case OS_SUPPORT_LINUX:
5916 create_ld_ident = create_name_linux_elf;
5918 case OS_SUPPORT_MACHO:
5919 create_ld_ident = create_name_macho;
5922 panic("unexpected OS support mode");
5925 /* create idents for all known runtime functions */
5926 for (size_t i = 0; i < lengthof(rts_data); ++i) {
5927 rts_idents[i] = new_id_from_str(rts_data[i].name);
5930 entitymap_init(&entitymap);
5933 static void init_ir_types(void)
5935 static int ir_types_initialized = 0;
5936 if (ir_types_initialized)
5938 ir_types_initialized = 1;
5940 ir_type_int = get_ir_type(type_int);
5941 ir_type_char = get_ir_type(type_char);
5942 ir_type_const_char = get_ir_type(type_const_char);
5943 ir_type_wchar_t = get_ir_type(type_wchar_t);
5944 ir_type_void = get_ir_type(type_void);
5946 be_params = be_get_backend_param();
5947 mode_float_arithmetic = be_params->mode_float_arithmetic;
5949 stack_param_align = be_params->stack_param_align;
5952 void exit_ast2firm(void)
5954 entitymap_destroy(&entitymap);
5955 obstack_free(&asm_obst, NULL);
5958 static void global_asm_to_firm(statement_t *s)
5960 for (; s != NULL; s = s->base.next) {
5961 assert(s->kind == STATEMENT_ASM);
5963 char const *const text = s->asms.asm_text.begin;
5964 size_t size = s->asms.asm_text.size;
5966 /* skip the last \0 */
5967 if (text[size - 1] == '\0')
5970 ident *const id = new_id_from_chars(text, size);
5975 void translation_unit_to_firm(translation_unit_t *unit)
5977 /* just to be sure */
5978 continue_label = NULL;
5980 current_switch_cond = NULL;
5981 current_translation_unit = unit;
5985 scope_to_firm(&unit->scope);
5986 global_asm_to_firm(unit->global_asm);
5988 current_ir_graph = NULL;
5989 current_translation_unit = NULL;