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"
50 #include "entitymap_t.h"
51 #include "driver/firm_opt.h"
52 #include "driver/firm_cmdline.h"
54 typedef struct trampoline_region trampoline_region;
55 struct trampoline_region {
56 ir_entity *function; /**< The function that is called by this trampoline */
57 ir_entity *region; /**< created region for the trampoline */
60 static const backend_params *be_params;
62 static ir_type *ir_type_char;
63 static ir_type *ir_type_const_char;
64 static ir_type *ir_type_wchar_t;
65 static ir_type *ir_type_void;
66 static ir_type *ir_type_int;
68 /* architecture specific floating point arithmetic mode (if any) */
69 static ir_mode *mode_float_arithmetic;
71 /* alignment of stack parameters */
72 static unsigned stack_param_align;
74 static int next_value_number_function;
75 static ir_node *continue_label;
76 static ir_node *break_label;
77 static ir_node *current_switch_cond;
78 static bool saw_default_label;
79 static label_t **all_labels;
80 static entity_t **inner_functions;
81 static ir_node *ijmp_list;
82 static bool constant_folding;
83 static bool initializer_use_bitfield_basetype;
85 extern bool have_const_functions;
87 static const entity_t *current_function_entity;
88 static ir_node *current_function_name;
89 static ir_node *current_funcsig;
90 static switch_statement_t *current_switch;
91 static ir_graph *current_function;
92 static translation_unit_t *current_translation_unit;
93 static trampoline_region *current_trampolines;
94 static ir_type *current_outer_frame;
95 static ir_type *current_outer_value_type;
96 static ir_node *current_static_link;
98 static entitymap_t entitymap;
100 static struct obstack asm_obst;
102 typedef enum declaration_kind_t {
103 DECLARATION_KIND_UNKNOWN,
104 DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
105 DECLARATION_KIND_GLOBAL_VARIABLE,
106 DECLARATION_KIND_LOCAL_VARIABLE,
107 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
108 DECLARATION_KIND_PARAMETER,
109 DECLARATION_KIND_PARAMETER_ENTITY,
110 DECLARATION_KIND_FUNCTION,
111 DECLARATION_KIND_COMPOUND_MEMBER,
112 DECLARATION_KIND_INNER_FUNCTION
113 } declaration_kind_t;
115 static ir_mode *get_ir_mode_storage(type_t *type);
117 * get arithmetic mode for a type. This is different from get_ir_mode_storage,
118 * int that it returns bigger modes for floating point on some platforms
119 * (x87 internally does arithemtic with 80bits)
121 static ir_mode *get_ir_mode_arithmetic(type_t *type);
123 static ir_type *get_ir_type_incomplete(type_t *type);
125 static void enqueue_inner_function(entity_t *entity)
127 if (inner_functions == NULL)
128 inner_functions = NEW_ARR_F(entity_t *, 0);
129 ARR_APP1(entity_t*, inner_functions, entity);
132 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
134 const entity_t *entity = get_irg_loc_description(irg, pos);
136 if (entity != NULL) {
137 warningf(&entity->base.source_position,
138 "%s '%#T' might be used uninitialized",
139 get_entity_kind_name(entity->kind),
140 entity->declaration.type, entity->base.symbol);
142 return new_r_Unknown(irg, mode);
145 static const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
147 const source_position_t *pos = (const source_position_t*) dbg;
152 return pos->input_name;
155 static dbg_info *get_dbg_info(const source_position_t *pos)
157 return (dbg_info*) pos;
160 static void dbg_print_type_dbg_info(char *buffer, size_t buffer_size,
161 const type_dbg_info *dbg)
164 print_to_buffer(buffer, buffer_size);
165 const type_t *type = (const type_t*) dbg;
167 finish_print_to_buffer();
170 static type_dbg_info *get_type_dbg_info_(const type_t *type)
172 return (type_dbg_info*) type;
175 static ir_mode *atomic_modes[ATOMIC_TYPE_LAST+1];
177 static ir_mode *mode_int, *mode_uint;
179 static ir_node *_expression_to_firm(const expression_t *expression);
180 static ir_node *expression_to_firm(const expression_t *expression);
181 static void create_local_declaration(entity_t *entity);
183 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
185 unsigned flags = get_atomic_type_flags(kind);
186 unsigned size = get_atomic_type_size(kind);
187 if ( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
188 && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
191 unsigned bit_size = size * 8;
192 bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
193 unsigned modulo_shift;
194 ir_mode_arithmetic arithmetic;
196 if (flags & ATOMIC_TYPE_FLAG_INTEGER) {
197 assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
198 snprintf(name, sizeof(name), "%s%u", is_signed ? "I" : "U",
200 sort = irms_int_number;
201 arithmetic = irma_twos_complement;
202 modulo_shift = bit_size < machine_size ? machine_size : bit_size;
204 assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
205 snprintf(name, sizeof(name), "F%u", bit_size);
206 sort = irms_float_number;
207 arithmetic = irma_ieee754;
210 return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
218 * Initialises the atomic modes depending on the machine size.
220 static void init_atomic_modes(void)
222 for (int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
223 atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
225 mode_int = atomic_modes[ATOMIC_TYPE_INT];
226 mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
228 /* there's no real void type in firm */
229 atomic_modes[ATOMIC_TYPE_VOID] = atomic_modes[ATOMIC_TYPE_CHAR];
231 /* initialize pointer modes */
233 ir_mode_sort sort = irms_reference;
234 unsigned bit_size = machine_size;
236 ir_mode_arithmetic arithmetic = irma_twos_complement;
237 unsigned modulo_shift
238 = bit_size < machine_size ? machine_size : bit_size;
240 snprintf(name, sizeof(name), "p%u", machine_size);
241 ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
244 set_reference_mode_signed_eq(ptr_mode, atomic_modes[get_intptr_kind()]);
245 set_reference_mode_unsigned_eq(ptr_mode, atomic_modes[get_uintptr_kind()]);
247 /* Hmm, pointers should be machine size */
248 set_modeP_data(ptr_mode);
249 set_modeP_code(ptr_mode);
252 ir_mode *get_atomic_mode(atomic_type_kind_t kind)
254 assert(kind <= ATOMIC_TYPE_LAST);
255 return atomic_modes[kind];
258 static ir_node *get_vla_size(array_type_t *const type)
260 ir_node *size_node = type->size_node;
261 if (size_node == NULL) {
262 size_node = expression_to_firm(type->size_expression);
263 type->size_node = size_node;
269 * Return a node representing the size of a type.
271 static ir_node *get_type_size_node(type_t *type)
273 type = skip_typeref(type);
275 if (is_type_array(type) && type->array.is_vla) {
276 ir_node *size_node = get_vla_size(&type->array);
277 ir_node *elem_size = get_type_size_node(type->array.element_type);
278 ir_mode *mode = get_irn_mode(size_node);
279 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
283 ir_mode *mode = get_ir_mode_storage(type_size_t);
285 sym.type_p = get_ir_type(type);
286 return new_SymConst(mode, sym, symconst_type_size);
289 static unsigned count_parameters(const function_type_t *function_type)
293 function_parameter_t *parameter = function_type->parameters;
294 for ( ; parameter != NULL; parameter = parameter->next) {
302 * Creates a Firm type for an atomic type
304 static ir_type *create_atomic_type(atomic_type_kind_t akind, const type_t *type)
306 ir_mode *mode = atomic_modes[akind];
307 type_dbg_info *dbgi = get_type_dbg_info_(type);
308 ir_type *irtype = new_d_type_primitive(mode, dbgi);
309 il_alignment_t alignment = get_atomic_type_alignment(akind);
311 set_type_alignment_bytes(irtype, alignment);
317 * Creates a Firm type for a complex type
319 static ir_type *create_complex_type(const complex_type_t *type)
321 atomic_type_kind_t kind = type->akind;
322 ir_mode *mode = atomic_modes[kind];
323 ident *id = get_mode_ident(mode);
327 /* FIXME: finish the array */
332 * Creates a Firm type for an imaginary type
334 static ir_type *create_imaginary_type(imaginary_type_t *type)
336 return create_atomic_type(type->akind, (const type_t*) type);
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 int n_parameters = count_parameters(function_type)
360 + (for_closure ? 1 : 0);
361 int n_results = return_type == type_void ? 0 : 1;
362 type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) function_type);
363 ir_type *irtype = new_d_type_method(n_parameters, n_results, dbgi);
365 if (return_type != type_void) {
366 ir_type *restype = get_ir_type(return_type);
367 set_method_res_type(irtype, 0, restype);
370 function_parameter_t *parameter = function_type->parameters;
373 ir_type *p_irtype = get_ir_type(type_void_ptr);
374 set_method_param_type(irtype, n, p_irtype);
377 for ( ; parameter != NULL; parameter = parameter->next) {
378 type_t *type = get_parameter_type(parameter->type);
379 ir_type *p_irtype = get_ir_type(type);
380 set_method_param_type(irtype, n, p_irtype);
384 bool is_variadic = function_type->variadic;
387 set_method_variadicity(irtype, variadicity_variadic);
389 unsigned cc = get_method_calling_convention(irtype);
390 switch (function_type->calling_convention) {
391 case CC_DEFAULT: /* unspecified calling convention, equal to one of the other, typically cdecl */
394 set_method_calling_convention(irtype, SET_CDECL(cc));
401 /* only non-variadic function can use stdcall, else use cdecl */
402 set_method_calling_convention(irtype, SET_STDCALL(cc));
408 /* only non-variadic function can use fastcall, else use cdecl */
409 set_method_calling_convention(irtype, SET_FASTCALL(cc));
413 /* Hmm, leave default, not accepted by the parser yet. */
418 set_method_calling_convention(irtype, get_method_calling_convention(irtype) | cc_this_call);
423 static ir_type *create_pointer_type(pointer_type_t *type)
425 type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) type);
426 type_t *points_to = type->points_to;
427 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
428 ir_type *ir_type = new_d_type_pointer(ir_points_to, dbgi);
433 static ir_type *create_reference_type(reference_type_t *type)
435 type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) type);
436 type_t *refers_to = type->refers_to;
437 ir_type *ir_refers_to = get_ir_type_incomplete(refers_to);
438 ir_type *ir_type = new_d_type_pointer(ir_refers_to, dbgi);
443 static ir_type *create_array_type(array_type_t *type)
445 type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) type);
446 type_t *element_type = type->element_type;
447 ir_type *ir_element_type = get_ir_type(element_type);
448 ir_type *ir_type = new_d_type_array(1, ir_element_type, dbgi);
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,
480 static ir_mode *s_modes[64 + 1] = {NULL, };
484 if (size <= 0 || size > 64)
487 mode = s_modes[size];
491 snprintf(name, sizeof(name), "bf_I%u", size);
492 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
493 size <= 32 ? 32 : size );
494 s_modes[size] = mode;
497 type_dbg_info *dbgi = get_type_dbg_info_(type);
498 res = new_d_type_primitive(mode, dbgi);
499 set_primitive_base_type(res, base_tp);
505 * Return the unsigned integer type of size bits.
507 * @param size the size
509 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
513 static ir_mode *u_modes[64 + 1] = {NULL, };
517 if (size <= 0 || size > 64)
520 mode = u_modes[size];
524 snprintf(name, sizeof(name), "bf_U%u", size);
525 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
526 size <= 32 ? 32 : size );
527 u_modes[size] = mode;
530 type_dbg_info *dbgi = get_type_dbg_info_(type);
531 res = new_d_type_primitive(mode, dbgi);
532 set_primitive_base_type(res, base_tp);
537 static ir_type *create_bitfield_type(bitfield_type_t *const type)
539 type_t *base = skip_typeref(type->base_type);
540 assert(base->kind == TYPE_ATOMIC || base->kind == TYPE_ENUM);
541 ir_type *irbase = get_ir_type(base);
543 unsigned size = type->bit_size;
545 assert(!is_type_float(base));
546 if (is_type_signed(base)) {
547 return get_signed_int_type_for_bit_size(irbase, size,
548 (const type_t*) type);
550 return get_unsigned_int_type_for_bit_size(irbase, size,
551 (const type_t*) type);
555 #define INVALID_TYPE ((ir_type_ptr)-1)
558 COMPOUND_IS_STRUCT = false,
559 COMPOUND_IS_UNION = true
563 * Construct firm type from ast struct type.
565 static ir_type *create_compound_type(compound_type_t *type,
566 bool incomplete, bool is_union)
568 compound_t *compound = type->compound;
570 if (compound->irtype != NULL && (compound->irtype_complete || incomplete)) {
571 return compound->irtype;
574 symbol_t *symbol = compound->base.symbol;
576 if (symbol != NULL) {
577 id = new_id_from_str(symbol->string);
580 id = id_unique("__anonymous_union.%u");
582 id = id_unique("__anonymous_struct.%u");
588 irtype = new_type_union(id);
590 irtype = new_type_struct(id);
593 compound->irtype_complete = false;
594 compound->irtype = irtype;
600 layout_union_type(type);
602 layout_struct_type(type);
605 compound->irtype_complete = true;
607 entity_t *entry = compound->members.entities;
608 for ( ; entry != NULL; entry = entry->base.next) {
609 if (entry->kind != ENTITY_COMPOUND_MEMBER)
612 symbol_t *symbol = entry->base.symbol;
613 type_t *entry_type = entry->declaration.type;
615 if (symbol == NULL) {
616 /* anonymous bitfield member, skip */
617 if (entry_type->kind == TYPE_BITFIELD)
619 assert(entry_type->kind == TYPE_COMPOUND_STRUCT
620 || entry_type->kind == TYPE_COMPOUND_UNION);
621 ident = id_unique("anon.%u");
623 ident = new_id_from_str(symbol->string);
626 dbg_info *dbgi = get_dbg_info(&entry->base.source_position);
628 ir_type *entry_irtype = get_ir_type(entry_type);
629 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
631 set_entity_offset(entity, entry->compound_member.offset);
632 set_entity_offset_bits_remainder(entity,
633 entry->compound_member.bit_offset);
635 assert(entry->declaration.kind == DECLARATION_KIND_UNKNOWN);
636 entry->declaration.kind = DECLARATION_KIND_COMPOUND_MEMBER;
637 entry->compound_member.entity = entity;
640 set_type_alignment_bytes(irtype, compound->alignment);
641 set_type_size_bytes(irtype, compound->size);
642 set_type_state(irtype, layout_fixed);
647 static ir_type *create_enum_type(enum_type_t *const type)
649 type->base.firm_type = ir_type_int;
651 ir_mode *const mode = mode_int;
652 tarval *const one = get_mode_one(mode);
653 tarval * tv_next = get_tarval_null(mode);
655 bool constant_folding_old = constant_folding;
656 constant_folding = true;
658 enum_t *enume = type->enume;
659 entity_t *entry = enume->base.next;
660 for (; entry != NULL; entry = entry->base.next) {
661 if (entry->kind != ENTITY_ENUM_VALUE)
664 expression_t *const init = entry->enum_value.value;
666 ir_node *const cnst = expression_to_firm(init);
667 if (!is_Const(cnst)) {
668 panic("couldn't fold constant");
670 tv_next = get_Const_tarval(cnst);
672 entry->enum_value.tv = tv_next;
673 tv_next = tarval_add(tv_next, one);
676 constant_folding = constant_folding_old;
678 return create_atomic_type(type->akind, (const type_t*) type);
681 static ir_type *get_ir_type_incomplete(type_t *type)
683 assert(type != NULL);
684 type = skip_typeref(type);
686 if (type->base.firm_type != NULL) {
687 assert(type->base.firm_type != INVALID_TYPE);
688 return type->base.firm_type;
691 switch (type->kind) {
692 case TYPE_COMPOUND_STRUCT:
693 return create_compound_type(&type->compound, true, COMPOUND_IS_STRUCT);
694 case TYPE_COMPOUND_UNION:
695 return create_compound_type(&type->compound, true, COMPOUND_IS_UNION);
697 return get_ir_type(type);
701 ir_type *get_ir_type(type_t *type)
703 assert(type != NULL);
705 type = skip_typeref(type);
707 if (type->base.firm_type != NULL) {
708 assert(type->base.firm_type != INVALID_TYPE);
709 return type->base.firm_type;
712 ir_type *firm_type = NULL;
713 switch (type->kind) {
715 /* Happens while constant folding, when there was an error */
716 return create_atomic_type(ATOMIC_TYPE_VOID, NULL);
719 firm_type = create_atomic_type(type->atomic.akind, type);
722 firm_type = create_complex_type(&type->complex);
725 firm_type = create_imaginary_type(&type->imaginary);
728 firm_type = create_method_type(&type->function, false);
731 firm_type = create_pointer_type(&type->pointer);
734 firm_type = create_reference_type(&type->reference);
737 firm_type = create_array_type(&type->array);
739 case TYPE_COMPOUND_STRUCT:
740 firm_type = create_compound_type(&type->compound, false, COMPOUND_IS_STRUCT);
742 case TYPE_COMPOUND_UNION:
743 firm_type = create_compound_type(&type->compound, false, COMPOUND_IS_UNION);
746 firm_type = create_enum_type(&type->enumt);
749 firm_type = get_ir_type(type->builtin.real_type);
752 firm_type = create_bitfield_type(&type->bitfield);
760 if (firm_type == NULL)
761 panic("unknown type found");
763 type->base.firm_type = firm_type;
767 static ir_mode *get_ir_mode_storage(type_t *type)
769 ir_type *irtype = get_ir_type(type);
771 /* firm doesn't report a mode for arrays somehow... */
772 if (is_Array_type(irtype)) {
776 ir_mode *mode = get_type_mode(irtype);
777 assert(mode != NULL);
781 static ir_mode *get_ir_mode_arithmetic(type_t *type)
783 ir_mode *mode = get_ir_mode_storage(type);
784 if (mode_is_float(mode) && mode_float_arithmetic != NULL) {
785 return mode_float_arithmetic;
791 /** Names of the runtime functions. */
792 static const struct {
793 int id; /**< the rts id */
794 int n_res; /**< number of return values */
795 const char *name; /**< the name of the rts function */
796 int n_params; /**< number of parameters */
797 unsigned flags; /**< language flags */
799 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
800 { rts_abort, 0, "abort", 0, _C89 },
801 { rts_alloca, 1, "alloca", 1, _ALL },
802 { rts_abs, 1, "abs", 1, _C89 },
803 { rts_labs, 1, "labs", 1, _C89 },
804 { rts_llabs, 1, "llabs", 1, _C99 },
805 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
807 { rts_fabs, 1, "fabs", 1, _C89 },
808 { rts_sqrt, 1, "sqrt", 1, _C89 },
809 { rts_cbrt, 1, "cbrt", 1, _C99 },
810 { rts_exp, 1, "exp", 1, _C89 },
811 { rts_exp2, 1, "exp2", 1, _C89 },
812 { rts_exp10, 1, "exp10", 1, _GNUC },
813 { rts_log, 1, "log", 1, _C89 },
814 { rts_log2, 1, "log2", 1, _C89 },
815 { rts_log10, 1, "log10", 1, _C89 },
816 { rts_pow, 1, "pow", 2, _C89 },
817 { rts_sin, 1, "sin", 1, _C89 },
818 { rts_cos, 1, "cos", 1, _C89 },
819 { rts_tan, 1, "tan", 1, _C89 },
820 { rts_asin, 1, "asin", 1, _C89 },
821 { rts_acos, 1, "acos", 1, _C89 },
822 { rts_atan, 1, "atan", 1, _C89 },
823 { rts_sinh, 1, "sinh", 1, _C89 },
824 { rts_cosh, 1, "cosh", 1, _C89 },
825 { rts_tanh, 1, "tanh", 1, _C89 },
827 { rts_fabsf, 1, "fabsf", 1, _C99 },
828 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
829 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
830 { rts_expf, 1, "expf", 1, _C99 },
831 { rts_exp2f, 1, "exp2f", 1, _C99 },
832 { rts_exp10f, 1, "exp10f", 1, _GNUC },
833 { rts_logf, 1, "logf", 1, _C99 },
834 { rts_log2f, 1, "log2f", 1, _C99 },
835 { rts_log10f, 1, "log10f", 1, _C99 },
836 { rts_powf, 1, "powf", 2, _C99 },
837 { rts_sinf, 1, "sinf", 1, _C99 },
838 { rts_cosf, 1, "cosf", 1, _C99 },
839 { rts_tanf, 1, "tanf", 1, _C99 },
840 { rts_asinf, 1, "asinf", 1, _C99 },
841 { rts_acosf, 1, "acosf", 1, _C99 },
842 { rts_atanf, 1, "atanf", 1, _C99 },
843 { rts_sinhf, 1, "sinhf", 1, _C99 },
844 { rts_coshf, 1, "coshf", 1, _C99 },
845 { rts_tanhf, 1, "tanhf", 1, _C99 },
847 { rts_fabsl, 1, "fabsl", 1, _C99 },
848 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
849 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
850 { rts_expl, 1, "expl", 1, _C99 },
851 { rts_exp2l, 1, "exp2l", 1, _C99 },
852 { rts_exp10l, 1, "exp10l", 1, _GNUC },
853 { rts_logl, 1, "logl", 1, _C99 },
854 { rts_log2l, 1, "log2l", 1, _C99 },
855 { rts_log10l, 1, "log10l", 1, _C99 },
856 { rts_powl, 1, "powl", 2, _C99 },
857 { rts_sinl, 1, "sinl", 1, _C99 },
858 { rts_cosl, 1, "cosl", 1, _C99 },
859 { rts_tanl, 1, "tanl", 1, _C99 },
860 { rts_asinl, 1, "asinl", 1, _C99 },
861 { rts_acosl, 1, "acosl", 1, _C99 },
862 { rts_atanl, 1, "atanl", 1, _C99 },
863 { rts_sinhl, 1, "sinhl", 1, _C99 },
864 { rts_coshl, 1, "coshl", 1, _C99 },
865 { rts_tanhl, 1, "tanhl", 1, _C99 },
867 { rts_strcmp, 1, "strcmp", 2, _C89 },
868 { rts_strncmp, 1, "strncmp", 3, _C89 },
869 { rts_strcpy, 1, "strcpy", 2, _C89 },
870 { rts_strlen, 1, "strlen", 1, _C89 },
871 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
872 { rts_mempcpy, 1, "mempcpy", 3, _GNUC },
873 { rts_memmove, 1, "memmove", 3, _C89 }, /* HMM, man say its C99 */
874 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
875 { rts_memcmp, 1, "memcmp", 3, _C89 }, /* HMM, man say its C99 */
878 static ident *rts_idents[lengthof(rts_data)];
880 static ident* (*create_ld_ident)(entity_t*) = create_name_linux_elf;
883 * Handle GNU attributes for entities
885 * @param ent the entity
886 * @param decl the routine declaration
888 static void handle_decl_modifiers(ir_entity *irentity, entity_t *entity)
890 assert(is_declaration(entity));
891 decl_modifiers_t modifiers = entity->declaration.modifiers;
893 if (is_method_entity(irentity)) {
894 if (modifiers & DM_PURE) {
895 set_entity_additional_property(irentity, mtp_property_pure);
897 if (modifiers & DM_CONST) {
898 set_entity_additional_property(irentity, mtp_property_const);
899 have_const_functions = true;
902 if (modifiers & DM_USED) {
903 add_entity_linkage(irentity, IR_LINKAGE_HIDDEN_USER);
905 if (modifiers & DM_WEAK) {
906 add_entity_linkage(irentity, IR_LINKAGE_WEAK);
910 static bool is_main(entity_t *entity)
912 static symbol_t *sym_main = NULL;
913 if (sym_main == NULL) {
914 sym_main = symbol_table_insert("main");
917 if (entity->base.symbol != sym_main)
919 /* must be in outermost scope */
920 if (entity->base.parent_scope != ¤t_translation_unit->scope)
927 * Creates an entity representing a function.
929 * @param declaration the function declaration
930 * @param owner_type the owner type of this function, NULL
931 * for global functions
933 static ir_entity *get_function_entity(entity_t *entity, ir_type *owner_type)
935 assert(entity->kind == ENTITY_FUNCTION);
936 if (entity->function.irentity != NULL) {
937 return entity->function.irentity;
940 if (is_main(entity)) {
941 /* force main to C linkage */
942 type_t *type = entity->declaration.type;
943 assert(is_type_function(type));
944 if (type->function.linkage != LINKAGE_C) {
945 type_t *new_type = duplicate_type(type);
946 new_type->function.linkage = LINKAGE_C;
947 type = identify_new_type(new_type);
948 entity->declaration.type = type;
952 symbol_t *symbol = entity->base.symbol;
953 ident *id = new_id_from_str(symbol->string);
956 /* already an entity defined? */
957 ir_entity *irentity = entitymap_get(&entitymap, symbol);
958 bool const has_body = entity->function.statement != NULL;
959 if (irentity != NULL) {
960 if ((get_entity_linkage(irentity) & IR_LINKAGE_EXTERN) && has_body) {
961 remove_entity_linkage(irentity, IR_LINKAGE_EXTERN);
966 ir_type *ir_type_method;
967 if (entity->function.need_closure)
968 ir_type_method = create_method_type(&entity->declaration.type->function, true);
970 ir_type_method = get_ir_type(entity->declaration.type);
972 bool nested_function = false;
973 if (owner_type == NULL)
974 owner_type = get_glob_type();
976 nested_function = true;
978 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
979 irentity = new_d_entity(owner_type, id, ir_type_method, dbgi);
983 ld_id = id_unique("inner.%u");
985 ld_id = create_ld_ident(entity);
986 set_entity_ld_ident(irentity, ld_id);
988 handle_decl_modifiers(irentity, entity);
990 if (! nested_function) {
991 /* static inline => local
992 * extern inline => local
993 * inline without definition => local
994 * inline with definition => external_visible */
995 storage_class_tag_t const storage_class
996 = (storage_class_tag_t) entity->declaration.storage_class;
997 bool const is_inline = entity->function.is_inline;
999 if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
1000 } else if (storage_class == STORAGE_CLASS_STATIC ||
1001 (is_inline && has_body)) {
1002 add_entity_linkage(irentity, IR_LINKAGE_LOCAL);
1003 } else if (has_body) {
1005 add_entity_linkage(irentity, IR_LINKAGE_EXTERN);
1008 /* nested functions are always local */
1009 add_entity_linkage(irentity, IR_LINKAGE_LOCAL);
1012 /* We should check for file scope here, but as long as we compile C only
1013 this is not needed. */
1014 if (! firm_opt.freestanding && !has_body) {
1015 /* check for a known runtime function */
1016 for (size_t i = 0; i < lengthof(rts_data); ++i) {
1017 if (id != rts_idents[i])
1020 /* ignore those rts functions not necessary needed for current mode */
1021 if ((c_mode & rts_data[i].flags) == 0)
1023 assert(rts_entities[rts_data[i].id] == NULL);
1024 rts_entities[rts_data[i].id] = irentity;
1028 entitymap_insert(&entitymap, symbol, irentity);
1031 entity->declaration.kind = DECLARATION_KIND_FUNCTION;
1032 entity->function.irentity = irentity;
1037 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1039 ir_mode *value_mode = get_irn_mode(value);
1041 if (value_mode == dest_mode || is_Bad(value))
1044 if (dest_mode == mode_b) {
1045 ir_node *zero = new_Const(get_mode_null(value_mode));
1046 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1047 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1051 return new_d_Conv(dbgi, value, dest_mode);
1055 * Creates a Const node representing a constant.
1057 static ir_node *const_to_firm(const const_expression_t *cnst)
1059 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1060 type_t *type = skip_typeref(cnst->base.type);
1061 ir_mode *mode = get_ir_mode_storage(type);
1066 if (mode_is_float(mode)) {
1067 tv = new_tarval_from_double(cnst->v.float_value, mode);
1069 if (mode_is_signed(mode)) {
1070 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1072 len = snprintf(buf, sizeof(buf), "%llu",
1073 (unsigned long long) cnst->v.int_value);
1075 tv = new_tarval_from_str(buf, len, mode);
1078 ir_node *res = new_d_Const(dbgi, tv);
1079 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
1080 return create_conv(dbgi, res, mode_arith);
1084 * Creates a Const node representing a character constant.
1086 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1088 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1089 ir_mode *mode = get_ir_mode_arithmetic(cnst->base.type);
1092 size_t const size = cnst->v.character.size;
1093 if (size == 1 && char_is_signed) {
1094 v = (signed char)cnst->v.character.begin[0];
1097 for (size_t i = 0; i < size; ++i) {
1098 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1102 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1103 tarval *tv = new_tarval_from_str(buf, len, mode);
1105 return new_d_Const(dbgi, tv);
1109 * Creates a Const node representing a wide character constant.
1111 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1113 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1114 ir_mode *mode = get_ir_mode_arithmetic(cnst->base.type);
1116 long long int v = cnst->v.wide_character.begin[0];
1119 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1120 tarval *tv = new_tarval_from_str(buf, len, mode);
1122 return new_d_Const(dbgi, tv);
1126 * Allocate an area of size bytes aligned at alignment
1129 static ir_entity *alloc_trampoline(ir_type *frame_type, int size, unsigned alignment)
1131 static unsigned area_cnt = 0;
1134 ir_type *tp = new_type_array(1, ir_type_char);
1135 set_array_bounds_int(tp, 0, 0, size);
1136 set_type_alignment_bytes(tp, alignment);
1138 snprintf(buf, sizeof(buf), "trampolin%u", area_cnt++);
1139 ident *name = new_id_from_str(buf);
1140 ir_entity *area = new_entity(frame_type, name, tp);
1142 /* mark this entity as compiler generated */
1143 set_entity_compiler_generated(area, 1);
1148 * Return a node representing a trampoline region
1149 * for a given function entity.
1151 * @param dbgi debug info
1152 * @param entity the function entity
1154 static ir_node *get_trampoline_region(dbg_info *dbgi, ir_entity *entity)
1156 ir_entity *region = NULL;
1159 if (current_trampolines != NULL) {
1160 for (i = ARR_LEN(current_trampolines) - 1; i >= 0; --i) {
1161 if (current_trampolines[i].function == entity) {
1162 region = current_trampolines[i].region;
1167 current_trampolines = NEW_ARR_F(trampoline_region, 0);
1169 ir_graph *irg = current_ir_graph;
1170 if (region == NULL) {
1171 /* create a new region */
1172 ir_type *frame_tp = get_irg_frame_type(irg);
1173 trampoline_region reg;
1174 reg.function = entity;
1176 reg.region = alloc_trampoline(frame_tp,
1177 be_params->trampoline_size,
1178 be_params->trampoline_align);
1179 ARR_APP1(trampoline_region, current_trampolines, reg);
1180 region = reg.region;
1182 return new_d_simpleSel(dbgi, get_irg_no_mem(irg), get_irg_frame(irg),
1188 * Creates a SymConst for a given entity.
1190 * @param dbgi debug info
1191 * @param mode the (reference) mode for the SymConst
1192 * @param entity the entity
1194 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1197 assert(entity != NULL);
1198 union symconst_symbol sym;
1199 sym.entity_p = entity;
1200 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1204 * Creates a trampoline for a function represented by an entity.
1206 * @param dbgi debug info
1207 * @param mode the (reference) mode for the function address
1208 * @param entity the function entity
1210 static ir_node *create_trampoline(dbg_info *dbgi, ir_mode *mode,
1213 assert(entity != NULL);
1215 in[0] = get_trampoline_region(dbgi, entity);
1216 in[1] = create_symconst(dbgi, mode, entity);
1217 in[2] = get_irg_frame(current_ir_graph);
1219 ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_inner_trampoline, get_unknown_type());
1220 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1221 return new_Proj(irn, mode, pn_Builtin_1_result);
1225 * Creates a SymConst node representing a string constant.
1227 * @param src_pos the source position of the string constant
1228 * @param id_prefix a prefix for the name of the generated string constant
1229 * @param value the value of the string constant
1231 static ir_node *string_to_firm(const source_position_t *const src_pos,
1232 const char *const id_prefix,
1233 const string_t *const value)
1235 ir_type *const global_type = get_glob_type();
1236 dbg_info *const dbgi = get_dbg_info(src_pos);
1237 ir_type *const type = new_type_array(1, ir_type_const_char);
1239 ident *const id = id_unique(id_prefix);
1240 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1241 set_entity_ld_ident(entity, id);
1242 add_entity_linkage(entity, IR_LINKAGE_CONSTANT | IR_LINKAGE_LOCAL);
1244 ir_type *const elem_type = ir_type_const_char;
1245 ir_mode *const mode = get_type_mode(elem_type);
1247 const char* const string = value->begin;
1248 const size_t slen = value->size;
1250 set_array_lower_bound_int(type, 0, 0);
1251 set_array_upper_bound_int(type, 0, slen);
1252 set_type_size_bytes(type, slen);
1253 set_type_state(type, layout_fixed);
1255 ir_initializer_t *initializer = create_initializer_compound(slen);
1256 for (size_t i = 0; i < slen; ++i) {
1257 tarval *tv = new_tarval_from_long(string[i], mode);
1258 ir_initializer_t *val = create_initializer_tarval(tv);
1259 set_initializer_compound_value(initializer, i, val);
1261 set_entity_initializer(entity, initializer);
1263 return create_symconst(dbgi, mode_P_data, entity);
1267 * Creates a SymConst node representing a string literal.
1269 * @param literal the string literal
1271 static ir_node *string_literal_to_firm(
1272 const string_literal_expression_t* literal)
1274 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1279 * Creates a SymConst node representing a wide string literal.
1281 * @param literal the wide string literal
1283 static ir_node *wide_string_literal_to_firm(
1284 const wide_string_literal_expression_t* const literal)
1286 ir_type *const global_type = get_glob_type();
1287 ir_type *const elem_type = ir_type_wchar_t;
1288 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1289 ir_type *const type = new_type_array(1, elem_type);
1291 ident *const id = id_unique("Lstr.%u");
1292 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1293 set_entity_ld_ident(entity, id);
1294 add_entity_linkage(entity, IR_LINKAGE_CONSTANT | IR_LINKAGE_LOCAL);
1296 ir_mode *const mode = get_type_mode(elem_type);
1298 const wchar_rep_t *const string = literal->value.begin;
1299 const size_t slen = literal->value.size;
1301 set_array_lower_bound_int(type, 0, 0);
1302 set_array_upper_bound_int(type, 0, slen);
1303 set_type_size_bytes(type, slen * get_mode_size_bytes(mode));
1304 set_type_state(type, layout_fixed);
1306 ir_initializer_t *initializer = create_initializer_compound(slen);
1307 for (size_t i = 0; i < slen; ++i) {
1308 tarval *tv = new_tarval_from_long(string[i], mode);
1309 ir_initializer_t *val = create_initializer_tarval(tv);
1310 set_initializer_compound_value(initializer, i, val);
1312 set_entity_initializer(entity, initializer);
1314 return create_symconst(dbgi, mode_P_data, entity);
1318 * Dereference an address.
1320 * @param dbgi debug info
1321 * @param type the type of the dereferenced result (the points_to type)
1322 * @param addr the address to dereference
1324 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1325 ir_node *const addr)
1327 ir_type *irtype = get_ir_type(type);
1328 if (is_compound_type(irtype)
1329 || is_Method_type(irtype)
1330 || is_Array_type(irtype)) {
1334 ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
1335 ? cons_volatile : cons_none;
1336 ir_mode *const mode = get_type_mode(irtype);
1337 ir_node *const memory = get_store();
1338 ir_node *const load = new_d_Load(dbgi, memory, addr, mode, flags);
1339 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1340 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1342 set_store(load_mem);
1344 ir_mode *const mode_arithmetic = get_ir_mode_arithmetic(type);
1345 return create_conv(dbgi, load_res, mode_arithmetic);
1349 * Creates a strict Conv (to the node's mode) if necessary.
1351 * @param dbgi debug info
1352 * @param node the node to strict conv
1354 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1356 ir_mode *mode = get_irn_mode(node);
1358 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1360 if (!mode_is_float(mode))
1363 /* check if there is already a Conv */
1364 if (is_Conv(node)) {
1365 /* convert it into a strict Conv */
1366 set_Conv_strict(node, 1);
1370 /* otherwise create a new one */
1371 return new_d_strictConv(dbgi, node, mode);
1375 * Returns the address of a global variable.
1377 * @param dbgi debug info
1378 * @param variable the variable
1380 static ir_node *get_global_var_address(dbg_info *const dbgi,
1381 const variable_t *const variable)
1383 ir_entity *const irentity = variable->v.entity;
1384 if (variable->thread_local) {
1385 ir_node *const no_mem = new_NoMem();
1386 ir_node *const tls = get_irg_tls(current_ir_graph);
1387 return new_d_simpleSel(dbgi, no_mem, tls, irentity);
1389 return create_symconst(dbgi, mode_P_data, irentity);
1394 * Returns the correct base address depending on whether it is a parameter or a
1395 * normal local variable.
1397 static ir_node *get_local_frame(ir_entity *const ent)
1399 ir_graph *const irg = current_ir_graph;
1400 const ir_type *const owner = get_entity_owner(ent);
1401 if (owner == current_outer_frame || owner == current_outer_value_type) {
1402 assert(current_static_link != NULL);
1403 return current_static_link;
1405 return get_irg_frame(irg);
1410 * Keep all memory edges of the given block.
1412 static void keep_all_memory(ir_node *block)
1414 ir_node *old = get_cur_block();
1416 set_cur_block(block);
1417 keep_alive(get_store());
1418 /* TODO: keep all memory edges from restricted pointers */
1422 static ir_node *reference_expression_enum_value_to_firm(
1423 const reference_expression_t *ref)
1425 entity_t *entity = ref->entity;
1426 type_t *type = skip_typeref(entity->enum_value.enum_type);
1427 /* make sure the type is constructed */
1428 (void) get_ir_type(type);
1430 return new_Const(entity->enum_value.tv);
1433 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1435 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1436 entity_t *entity = ref->entity;
1437 assert(is_declaration(entity));
1438 type_t *type = skip_typeref(entity->declaration.type);
1440 /* make sure the type is constructed */
1441 (void) get_ir_type(type);
1443 /* for gcc compatibility we have to produce (dummy) addresses for some
1445 if (entity->kind == ENTITY_FUNCTION && entity->function.btk != bk_none) {
1446 if (warning.other) {
1447 warningf(&ref->base.source_position,
1448 "taking address of builtin '%Y'", ref->entity->base.symbol);
1451 /* simply create a NULL pointer */
1452 ir_mode *mode = get_ir_mode_arithmetic(type_void_ptr);
1453 ir_node *res = new_Const_long(mode, 0);
1458 switch ((declaration_kind_t) entity->declaration.kind) {
1459 case DECLARATION_KIND_UNKNOWN:
1462 case DECLARATION_KIND_LOCAL_VARIABLE: {
1463 ir_mode *const mode = get_ir_mode_storage(type);
1464 ir_node *const value = get_value(entity->variable.v.value_number, mode);
1465 return create_conv(NULL, value, get_ir_mode_arithmetic(type));
1467 case DECLARATION_KIND_PARAMETER: {
1468 ir_mode *const mode = get_ir_mode_storage(type);
1469 ir_node *const value = get_value(entity->parameter.v.value_number,mode);
1470 return create_conv(NULL, value, get_ir_mode_arithmetic(type));
1472 case DECLARATION_KIND_FUNCTION: {
1473 ir_mode *const mode = get_ir_mode_storage(type);
1474 return create_symconst(dbgi, mode, entity->function.irentity);
1476 case DECLARATION_KIND_INNER_FUNCTION: {
1477 ir_mode *const mode = get_ir_mode_storage(type);
1478 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1479 /* inner function not using the closure */
1480 return create_symconst(dbgi, mode, entity->function.irentity);
1482 /* need trampoline here */
1483 return create_trampoline(dbgi, mode, entity->function.irentity);
1486 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1487 const variable_t *variable = &entity->variable;
1488 ir_node *const addr = get_global_var_address(dbgi, variable);
1489 return deref_address(dbgi, variable->base.type, addr);
1492 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1493 ir_entity *irentity = entity->variable.v.entity;
1494 ir_node *frame = get_local_frame(irentity);
1495 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1496 return deref_address(dbgi, entity->declaration.type, sel);
1498 case DECLARATION_KIND_PARAMETER_ENTITY: {
1499 ir_entity *irentity = entity->parameter.v.entity;
1500 ir_node *frame = get_local_frame(irentity);
1501 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1502 return deref_address(dbgi, entity->declaration.type, sel);
1505 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1506 return entity->variable.v.vla_base;
1508 case DECLARATION_KIND_COMPOUND_MEMBER:
1509 panic("not implemented reference type");
1512 panic("reference to declaration with unknown type found");
1515 static ir_node *reference_addr(const reference_expression_t *ref)
1517 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1518 entity_t *entity = ref->entity;
1519 assert(is_declaration(entity));
1521 switch((declaration_kind_t) entity->declaration.kind) {
1522 case DECLARATION_KIND_UNKNOWN:
1524 case DECLARATION_KIND_PARAMETER:
1525 case DECLARATION_KIND_LOCAL_VARIABLE:
1526 /* you can store to a local variable (so we don't panic but return NULL
1527 * as an indicator for no real address) */
1529 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1530 ir_node *const addr = get_global_var_address(dbgi, &entity->variable);
1533 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1534 ir_entity *irentity = entity->variable.v.entity;
1535 ir_node *frame = get_local_frame(irentity);
1536 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1540 case DECLARATION_KIND_PARAMETER_ENTITY: {
1541 ir_entity *irentity = entity->parameter.v.entity;
1542 ir_node *frame = get_local_frame(irentity);
1543 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1548 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1549 return entity->variable.v.vla_base;
1551 case DECLARATION_KIND_FUNCTION: {
1552 type_t *const type = skip_typeref(entity->declaration.type);
1553 ir_mode *const mode = get_ir_mode_storage(type);
1554 return create_symconst(dbgi, mode, entity->function.irentity);
1557 case DECLARATION_KIND_INNER_FUNCTION: {
1558 type_t *const type = skip_typeref(entity->declaration.type);
1559 ir_mode *const mode = get_ir_mode_storage(type);
1560 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1561 /* inner function not using the closure */
1562 return create_symconst(dbgi, mode, entity->function.irentity);
1564 /* need trampoline here */
1565 return create_trampoline(dbgi, mode, entity->function.irentity);
1569 case DECLARATION_KIND_COMPOUND_MEMBER:
1570 panic("not implemented reference type");
1573 panic("reference to declaration with unknown type found");
1577 * Generate an unary builtin.
1579 * @param kind the builtin kind to generate
1580 * @param op the operand
1581 * @param function_type the function type for the GNU builtin routine
1582 * @param db debug info
1584 static ir_node *gen_unary_builtin(ir_builtin_kind kind, expression_t *op, type_t *function_type, dbg_info *db)
1587 in[0] = expression_to_firm(op);
1589 ir_type *tp = get_ir_type(function_type);
1590 ir_type *res = get_method_res_type(tp, 0);
1591 ir_node *irn = new_d_Builtin(db, get_irg_no_mem(current_ir_graph), 1, in, kind, tp);
1592 set_irn_pinned(irn, op_pin_state_floats);
1593 return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result);
1597 * Generate a pinned unary builtin.
1599 * @param kind the builtin kind to generate
1600 * @param op the operand
1601 * @param function_type the function type for the GNU builtin routine
1602 * @param db debug info
1604 static ir_node *gen_unary_builtin_pinned(ir_builtin_kind kind, expression_t *op, type_t *function_type, dbg_info *db)
1607 in[0] = expression_to_firm(op);
1609 ir_type *tp = get_ir_type(function_type);
1610 ir_type *res = get_method_res_type(tp, 0);
1611 ir_node *mem = get_store();
1612 ir_node *irn = new_d_Builtin(db, mem, 1, in, kind, tp);
1613 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1614 return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result);
1619 * Generate an binary-void-return builtin.
1621 * @param kind the builtin kind to generate
1622 * @param op1 the first operand
1623 * @param op2 the second operand
1624 * @param function_type the function type for the GNU builtin routine
1625 * @param db debug info
1627 static ir_node *gen_binary_builtin_mem(ir_builtin_kind kind, expression_t *op1, expression_t *op2,
1628 type_t *function_type, dbg_info *db)
1631 in[0] = expression_to_firm(op1);
1632 in[1] = expression_to_firm(op2);
1634 ir_type *tp = get_ir_type(function_type);
1635 ir_node *mem = get_store();
1636 ir_node *irn = new_d_Builtin(db, mem, 2, in, kind, tp);
1637 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1642 * Transform calls to builtin functions.
1644 static ir_node *process_builtin_call(const call_expression_t *call)
1646 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1648 assert(call->function->kind == EXPR_REFERENCE);
1649 reference_expression_t *builtin = &call->function->reference;
1651 type_t *type = skip_typeref(builtin->base.type);
1652 assert(is_type_pointer(type));
1654 type_t *function_type = skip_typeref(type->pointer.points_to);
1656 switch (builtin->entity->function.btk) {
1657 case bk_gnu_builtin_alloca: {
1658 if (call->arguments == NULL || call->arguments->next != NULL) {
1659 panic("invalid number of parameters on __builtin_alloca");
1661 expression_t *argument = call->arguments->expression;
1662 ir_node *size = expression_to_firm(argument);
1664 ir_node *store = get_store();
1665 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1667 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1669 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1674 case bk_gnu_builtin_huge_val:
1675 case bk_gnu_builtin_inf:
1676 case bk_gnu_builtin_inff:
1677 case bk_gnu_builtin_infl: {
1678 type_t *type = function_type->function.return_type;
1679 ir_mode *mode = get_ir_mode_arithmetic(type);
1680 tarval *tv = get_mode_infinite(mode);
1681 ir_node *res = new_d_Const(dbgi, tv);
1684 case bk_gnu_builtin_nan:
1685 case bk_gnu_builtin_nanf:
1686 case bk_gnu_builtin_nanl: {
1687 /* Ignore string for now... */
1688 assert(is_type_function(function_type));
1689 type_t *type = function_type->function.return_type;
1690 ir_mode *mode = get_ir_mode_arithmetic(type);
1691 tarval *tv = get_mode_NAN(mode);
1692 ir_node *res = new_d_Const(dbgi, tv);
1695 case bk_gnu_builtin_expect: {
1696 expression_t *argument = call->arguments->expression;
1697 return _expression_to_firm(argument);
1699 case bk_gnu_builtin_va_end:
1700 /* evaluate the argument of va_end for its side effects */
1701 _expression_to_firm(call->arguments->expression);
1703 case bk_gnu_builtin_frame_address: {
1704 expression_t *const expression = call->arguments->expression;
1705 bool val = fold_constant_to_bool(expression);
1708 return get_irg_frame(current_ir_graph);
1710 /* get the argument */
1713 in[0] = expression_to_firm(expression);
1714 in[1] = get_irg_frame(current_ir_graph);
1715 ir_type *tp = get_ir_type(function_type);
1716 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_frame_address, tp);
1717 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1720 case bk_gnu_builtin_return_address: {
1722 expression_t *const expression = call->arguments->expression;
1725 in[0] = expression_to_firm(expression);
1726 in[1] = get_irg_frame(current_ir_graph);
1727 ir_type *tp = get_ir_type(function_type);
1728 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_return_address, tp);
1729 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1731 case bk_gnu_builtin_ffs:
1732 return gen_unary_builtin(ir_bk_ffs, call->arguments->expression, function_type, dbgi);
1733 case bk_gnu_builtin_clz:
1734 return gen_unary_builtin(ir_bk_clz, call->arguments->expression, function_type, dbgi);
1735 case bk_gnu_builtin_ctz:
1736 return gen_unary_builtin(ir_bk_ctz, call->arguments->expression, function_type, dbgi);
1737 case bk_gnu_builtin_popcount:
1738 case bk_ms__popcount:
1739 return gen_unary_builtin(ir_bk_popcount, call->arguments->expression, function_type, dbgi);
1740 case bk_gnu_builtin_parity:
1741 return gen_unary_builtin(ir_bk_parity, call->arguments->expression, function_type, dbgi);
1742 case bk_gnu_builtin_prefetch: {
1743 call_argument_t *const args = call->arguments;
1744 expression_t *const addr = args->expression;
1747 in[0] = _expression_to_firm(addr);
1748 if (args->next != NULL) {
1749 expression_t *const rw = args->next->expression;
1751 in[1] = _expression_to_firm(rw);
1753 if (args->next->next != NULL) {
1754 expression_t *const locality = args->next->next->expression;
1756 in[2] = expression_to_firm(locality);
1758 in[2] = new_Const_long(mode_int, 3);
1761 in[1] = new_Const_long(mode_int, 0);
1762 in[2] = new_Const_long(mode_int, 3);
1764 ir_type *tp = get_ir_type(function_type);
1765 ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_prefetch, tp);
1766 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1769 case bk_gnu_builtin_trap:
1772 ir_type *tp = get_ir_type(function_type);
1773 ir_node *irn = new_d_Builtin(dbgi, get_store(), 0, NULL, ir_bk_trap, tp);
1774 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1777 case bk_ms__debugbreak: {
1778 ir_type *tp = get_ir_type(function_type);
1779 ir_node *irn = new_d_Builtin(dbgi, get_store(), 0, NULL, ir_bk_debugbreak, tp);
1780 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1783 case bk_ms_ReturnAddress: {
1786 in[0] = new_Const_long(mode_int, 0);
1787 in[1] = get_irg_frame(current_ir_graph);
1788 ir_type *tp = get_ir_type(function_type);
1789 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_return_address, tp);
1790 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1793 case bk_ms_rotl64: {
1794 ir_node *val = expression_to_firm(call->arguments->expression);
1795 ir_node *shf = expression_to_firm(call->arguments->next->expression);
1796 ir_mode *mode = get_irn_mode(val);
1797 return new_d_Rotl(dbgi, val, create_conv(dbgi, shf, mode_uint), mode);
1800 case bk_ms_rotr64: {
1801 ir_node *val = expression_to_firm(call->arguments->expression);
1802 ir_node *shf = expression_to_firm(call->arguments->next->expression);
1803 ir_mode *mode = get_irn_mode(val);
1804 ir_node *c = new_Const_long(mode_uint, get_mode_size_bits(mode));
1805 ir_node *sub = new_d_Sub(dbgi, c, create_conv(dbgi, shf, mode_uint), mode_uint);
1806 return new_d_Rotl(dbgi, val, sub, mode);
1808 case bk_ms_byteswap_ushort:
1809 case bk_ms_byteswap_ulong:
1810 case bk_ms_byteswap_uint64:
1811 return gen_unary_builtin(ir_bk_bswap, call->arguments->expression, function_type, dbgi);
1814 case bk_ms__indword:
1815 return gen_unary_builtin_pinned(ir_bk_inport, call->arguments->expression, function_type, dbgi);
1816 case bk_ms__outbyte:
1817 case bk_ms__outword:
1818 case bk_ms__outdword:
1819 return gen_binary_builtin_mem(ir_bk_outport, call->arguments->expression,
1820 call->arguments->next->expression, function_type, dbgi);
1822 panic("unsupported builtin found");
1827 * Transform a call expression.
1828 * Handles some special cases, like alloca() calls, which must be resolved
1829 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1830 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1833 static ir_node *call_expression_to_firm(const call_expression_t *const call)
1835 dbg_info *const dbgi = get_dbg_info(&call->base.source_position);
1836 assert(get_cur_block() != NULL);
1838 expression_t *function = call->function;
1839 if (function->kind == EXPR_REFERENCE) {
1840 const reference_expression_t *ref = &function->reference;
1841 entity_t *entity = ref->entity;
1843 if (entity->kind == ENTITY_FUNCTION) {
1844 if (entity->function.btk != bk_none) {
1845 return process_builtin_call(call);
1848 ir_entity *irentity = entity->function.irentity;
1849 if (irentity == NULL)
1850 irentity = get_function_entity(entity, NULL);
1852 if (irentity == rts_entities[rts_alloca]) {
1853 /* handle alloca() call */
1854 expression_t *argument = call->arguments->expression;
1855 ir_node *size = expression_to_firm(argument);
1856 ir_mode *mode = get_ir_mode_arithmetic(type_size_t);
1858 size = create_conv(dbgi, size, mode);
1860 ir_node *store = get_store();
1861 ir_node *alloca = new_d_Alloc(dbgi, store, size,
1862 firm_unknown_type, stack_alloc);
1863 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1865 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1871 ir_node *callee = expression_to_firm(function);
1873 type_t *type = skip_typeref(function->base.type);
1874 assert(is_type_pointer(type));
1875 pointer_type_t *pointer_type = &type->pointer;
1876 type_t *points_to = skip_typeref(pointer_type->points_to);
1877 assert(is_type_function(points_to));
1878 function_type_t *function_type = &points_to->function;
1880 int n_parameters = 0;
1881 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1882 ir_type *new_method_type = NULL;
1883 if (function_type->variadic || function_type->unspecified_parameters) {
1884 const call_argument_t *argument = call->arguments;
1885 for ( ; argument != NULL; argument = argument->next) {
1889 /* we need to construct a new method type matching the call
1891 type_dbg_info *tdbgi = get_type_dbg_info_((const type_t*) function_type);
1892 int n_res = get_method_n_ress(ir_method_type);
1893 new_method_type = new_d_type_method(n_parameters, n_res, tdbgi);
1894 set_method_calling_convention(new_method_type,
1895 get_method_calling_convention(ir_method_type));
1896 set_method_additional_properties(new_method_type,
1897 get_method_additional_properties(ir_method_type));
1898 set_method_variadicity(new_method_type,
1899 get_method_variadicity(ir_method_type));
1901 for (int i = 0; i < n_res; ++i) {
1902 set_method_res_type(new_method_type, i,
1903 get_method_res_type(ir_method_type, i));
1905 argument = call->arguments;
1906 for (int i = 0; i < n_parameters; ++i, argument = argument->next) {
1907 expression_t *expression = argument->expression;
1908 ir_type *irtype = get_ir_type(expression->base.type);
1909 set_method_param_type(new_method_type, i, irtype);
1911 ir_method_type = new_method_type;
1913 n_parameters = get_method_n_params(ir_method_type);
1916 ir_node *in[n_parameters];
1918 const call_argument_t *argument = call->arguments;
1919 for (int n = 0; n < n_parameters; ++n) {
1920 expression_t *expression = argument->expression;
1921 ir_node *arg_node = expression_to_firm(expression);
1923 type_t *type = skip_typeref(expression->base.type);
1924 if (!is_type_compound(type)) {
1925 ir_mode *mode = get_ir_mode_storage(expression->base.type);
1926 arg_node = create_conv(dbgi, arg_node, mode);
1927 arg_node = do_strict_conv(dbgi, arg_node);
1932 argument = argument->next;
1935 ir_node *store = get_store();
1936 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1938 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M);
1941 type_t *return_type = skip_typeref(function_type->return_type);
1942 ir_node *result = NULL;
1944 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1945 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1947 if (is_type_scalar(return_type)) {
1948 ir_mode *mode = get_ir_mode_storage(return_type);
1949 result = new_d_Proj(dbgi, resproj, mode, 0);
1950 ir_mode *mode_arith = get_ir_mode_arithmetic(return_type);
1951 result = create_conv(NULL, result, mode_arith);
1953 ir_mode *mode = mode_P_data;
1954 result = new_d_Proj(dbgi, resproj, mode, 0);
1958 if (function->kind == EXPR_REFERENCE &&
1959 function->reference.entity->declaration.modifiers & DM_NORETURN) {
1960 /* A dead end: Keep the Call and the Block. Also place all further
1961 * nodes into a new and unreachable block. */
1963 keep_alive(get_cur_block());
1970 static void statement_to_firm(statement_t *statement);
1971 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1973 static ir_node *expression_to_addr(const expression_t *expression);
1974 static ir_node *create_condition_evaluation(const expression_t *expression,
1975 ir_node *true_block,
1976 ir_node *false_block);
1978 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1981 if (!is_type_compound(type)) {
1982 ir_mode *mode = get_ir_mode_storage(type);
1983 value = create_conv(dbgi, value, mode);
1984 value = do_strict_conv(dbgi, value);
1987 ir_node *memory = get_store();
1989 if (is_type_scalar(type)) {
1990 ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
1991 ? cons_volatile : cons_none;
1992 ir_node *store = new_d_Store(dbgi, memory, addr, value, flags);
1993 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1994 set_store(store_mem);
1996 ir_type *irtype = get_ir_type(type);
1997 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1998 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
1999 set_store(copyb_mem);
2003 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
2005 tarval *all_one = get_mode_all_one(mode);
2006 int mode_size = get_mode_size_bits(mode);
2008 assert(offset >= 0);
2010 assert(offset + size <= mode_size);
2011 if (size == mode_size) {
2015 long shiftr = get_mode_size_bits(mode) - size;
2016 long shiftl = offset;
2017 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
2018 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
2019 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
2020 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
2025 static ir_node *bitfield_store_to_firm(dbg_info *dbgi,
2026 ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile)
2028 ir_type *entity_type = get_entity_type(entity);
2029 ir_type *base_type = get_primitive_base_type(entity_type);
2030 assert(base_type != NULL);
2031 ir_mode *mode = get_type_mode(base_type);
2033 value = create_conv(dbgi, value, mode);
2035 /* kill upper bits of value and shift to right position */
2036 int bitoffset = get_entity_offset_bits_remainder(entity);
2037 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
2039 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
2040 ir_node *mask_node = new_d_Const(dbgi, mask);
2041 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
2042 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
2043 ir_node *shiftcount = new_d_Const(dbgi, shiftl);
2044 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
2046 /* load current value */
2047 ir_node *mem = get_store();
2048 ir_node *load = new_d_Load(dbgi, mem, addr, mode,
2049 set_volatile ? cons_volatile : cons_none);
2050 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
2051 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
2052 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
2053 tarval *inv_mask = tarval_not(shift_mask);
2054 ir_node *inv_mask_node = new_d_Const(dbgi, inv_mask);
2055 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
2057 /* construct new value and store */
2058 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
2059 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val,
2060 set_volatile ? cons_volatile : cons_none);
2061 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
2062 set_store(store_mem);
2064 return value_masked;
2067 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
2070 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2071 type_t *type = expression->base.type;
2072 ir_mode *mode = get_ir_mode_storage(type);
2073 ir_node *mem = get_store();
2074 ir_node *load = new_d_Load(dbgi, mem, addr, mode, cons_none);
2075 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
2076 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
2078 load_res = create_conv(dbgi, load_res, mode_int);
2080 set_store(load_mem);
2082 /* kill upper bits */
2083 assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER);
2084 ir_entity *entity = expression->compound_entry->compound_member.entity;
2085 int bitoffset = get_entity_offset_bits_remainder(entity);
2086 ir_type *entity_type = get_entity_type(entity);
2087 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
2088 long shift_bitsl = machine_size - bitoffset - bitsize;
2089 assert(shift_bitsl >= 0);
2090 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
2091 ir_node *countl = new_d_Const(dbgi, tvl);
2092 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
2094 long shift_bitsr = bitoffset + shift_bitsl;
2095 assert(shift_bitsr <= (long) machine_size);
2096 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
2097 ir_node *countr = new_d_Const(dbgi, tvr);
2099 if (mode_is_signed(mode)) {
2100 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
2102 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
2105 return create_conv(dbgi, shiftr, mode);
2108 /* make sure the selected compound type is constructed */
2109 static void construct_select_compound(const select_expression_t *expression)
2111 type_t *type = skip_typeref(expression->compound->base.type);
2112 if (is_type_pointer(type)) {
2113 type = type->pointer.points_to;
2115 (void) get_ir_type(type);
2118 static ir_node *set_value_for_expression_addr(const expression_t *expression,
2119 ir_node *value, ir_node *addr)
2121 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2122 type_t *type = skip_typeref(expression->base.type);
2124 if (!is_type_compound(type)) {
2125 ir_mode *mode = get_ir_mode_storage(type);
2126 value = create_conv(dbgi, value, mode);
2127 value = do_strict_conv(dbgi, value);
2130 if (expression->kind == EXPR_REFERENCE) {
2131 const reference_expression_t *ref = &expression->reference;
2133 entity_t *entity = ref->entity;
2134 assert(is_declaration(entity));
2135 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2136 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2137 set_value(entity->variable.v.value_number, value);
2139 } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2140 set_value(entity->parameter.v.value_number, value);
2146 addr = expression_to_addr(expression);
2147 assert(addr != NULL);
2149 if (expression->kind == EXPR_SELECT) {
2150 const select_expression_t *select = &expression->select;
2152 construct_select_compound(select);
2154 entity_t *entity = select->compound_entry;
2155 assert(entity->kind == ENTITY_COMPOUND_MEMBER);
2156 if (entity->declaration.type->kind == TYPE_BITFIELD) {
2157 ir_entity *irentity = entity->compound_member.entity;
2159 = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
2160 value = bitfield_store_to_firm(dbgi, irentity, addr, value,
2166 assign_value(dbgi, addr, type, value);
2170 static void set_value_for_expression(const expression_t *expression,
2173 set_value_for_expression_addr(expression, value, NULL);
2176 static ir_node *get_value_from_lvalue(const expression_t *expression,
2179 if (expression->kind == EXPR_REFERENCE) {
2180 const reference_expression_t *ref = &expression->reference;
2182 entity_t *entity = ref->entity;
2183 assert(entity->kind == ENTITY_VARIABLE
2184 || entity->kind == ENTITY_PARAMETER);
2185 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2187 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2188 value_number = entity->variable.v.value_number;
2189 assert(addr == NULL);
2190 type_t *type = skip_typeref(expression->base.type);
2191 ir_mode *mode = get_ir_mode_storage(type);
2192 ir_node *res = get_value(value_number, mode);
2193 return create_conv(NULL, res, get_ir_mode_arithmetic(type));
2194 } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2195 value_number = entity->parameter.v.value_number;
2196 assert(addr == NULL);
2197 type_t *type = skip_typeref(expression->base.type);
2198 ir_mode *mode = get_ir_mode_storage(type);
2199 ir_node *res = get_value(value_number, mode);
2200 return create_conv(NULL, res, get_ir_mode_arithmetic(type));
2204 assert(addr != NULL);
2205 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2208 if (expression->kind == EXPR_SELECT &&
2209 expression->select.compound_entry->declaration.type->kind == TYPE_BITFIELD){
2210 construct_select_compound(&expression->select);
2211 value = bitfield_extract_to_firm(&expression->select, addr);
2213 value = deref_address(dbgi, expression->base.type, addr);
2220 static ir_node *create_incdec(const unary_expression_t *expression)
2222 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2223 const expression_t *value_expr = expression->value;
2224 ir_node *addr = expression_to_addr(value_expr);
2225 ir_node *value = get_value_from_lvalue(value_expr, addr);
2227 type_t *type = skip_typeref(expression->base.type);
2228 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2231 if (is_type_pointer(type)) {
2232 pointer_type_t *pointer_type = &type->pointer;
2233 offset = get_type_size_node(pointer_type->points_to);
2235 assert(is_type_arithmetic(type));
2236 offset = new_Const(get_mode_one(mode));
2240 ir_node *store_value;
2241 switch(expression->base.kind) {
2242 case EXPR_UNARY_POSTFIX_INCREMENT:
2244 store_value = new_d_Add(dbgi, value, offset, mode);
2246 case EXPR_UNARY_POSTFIX_DECREMENT:
2248 store_value = new_d_Sub(dbgi, value, offset, mode);
2250 case EXPR_UNARY_PREFIX_INCREMENT:
2251 result = new_d_Add(dbgi, value, offset, mode);
2252 store_value = result;
2254 case EXPR_UNARY_PREFIX_DECREMENT:
2255 result = new_d_Sub(dbgi, value, offset, mode);
2256 store_value = result;
2259 panic("no incdec expr in create_incdec");
2262 set_value_for_expression_addr(value_expr, store_value, addr);
2267 static bool is_local_variable(expression_t *expression)
2269 if (expression->kind != EXPR_REFERENCE)
2271 reference_expression_t *ref_expr = &expression->reference;
2272 entity_t *entity = ref_expr->entity;
2273 if (entity->kind != ENTITY_VARIABLE)
2275 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2276 return entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE;
2279 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
2282 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
2283 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
2284 case EXPR_BINARY_NOTEQUAL:
2285 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
2286 case EXPR_BINARY_ISLESS:
2287 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
2288 case EXPR_BINARY_ISLESSEQUAL:
2289 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
2290 case EXPR_BINARY_ISGREATER:
2291 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
2292 case EXPR_BINARY_ISGREATEREQUAL:
2293 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
2294 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
2299 panic("trying to get pn_Cmp from non-comparison binexpr type");
2303 * Handle the assume optimizer hint: check if a Confirm
2304 * node can be created.
2306 * @param dbi debug info
2307 * @param expr the IL assume expression
2309 * we support here only some simple cases:
2314 static ir_node *handle_assume_compare(dbg_info *dbi,
2315 const binary_expression_t *expression)
2317 expression_t *op1 = expression->left;
2318 expression_t *op2 = expression->right;
2319 entity_t *var2, *var = NULL;
2320 ir_node *res = NULL;
2323 cmp_val = get_pnc(expression->base.kind, op1->base.type);
2325 if (is_local_variable(op1) && is_local_variable(op2)) {
2326 var = op1->reference.entity;
2327 var2 = op2->reference.entity;
2329 type_t *const type = skip_typeref(var->declaration.type);
2330 ir_mode *const mode = get_ir_mode_storage(type);
2332 ir_node *const irn1 = get_value(var->variable.v.value_number, mode);
2333 ir_node *const irn2 = get_value(var2->variable.v.value_number, mode);
2335 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
2336 set_value(var2->variable.v.value_number, res);
2338 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
2339 set_value(var->variable.v.value_number, res);
2345 if (is_local_variable(op1) && is_constant_expression(op2)) {
2346 var = op1->reference.entity;
2348 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2349 cmp_val = get_inversed_pnc(cmp_val);
2350 var = op2->reference.entity;
2355 type_t *const type = skip_typeref(var->declaration.type);
2356 ir_mode *const mode = get_ir_mode_storage(type);
2358 res = get_value(var->variable.v.value_number, mode);
2359 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2360 set_value(var->variable.v.value_number, res);
2366 * Handle the assume optimizer hint.
2368 * @param dbi debug info
2369 * @param expr the IL assume expression
2371 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression)
2373 switch(expression->kind) {
2374 case EXPR_BINARY_EQUAL:
2375 case EXPR_BINARY_NOTEQUAL:
2376 case EXPR_BINARY_LESS:
2377 case EXPR_BINARY_LESSEQUAL:
2378 case EXPR_BINARY_GREATER:
2379 case EXPR_BINARY_GREATEREQUAL:
2380 return handle_assume_compare(dbi, &expression->binary);
2386 static ir_node *create_cast(dbg_info *dbgi, ir_node *value_node,
2387 type_t *from_type, type_t *type)
2389 type = skip_typeref(type);
2390 if (!is_type_scalar(type)) {
2391 /* make sure firm type is constructed */
2392 (void) get_ir_type(type);
2396 from_type = skip_typeref(from_type);
2397 ir_mode *mode = get_ir_mode_storage(type);
2398 /* check for conversion from / to __based types */
2399 if (is_type_pointer(type) && is_type_pointer(from_type)) {
2400 const variable_t *from_var = from_type->pointer.base_variable;
2401 const variable_t *to_var = type->pointer.base_variable;
2402 if (from_var != to_var) {
2403 if (from_var != NULL) {
2404 ir_node *const addr = get_global_var_address(dbgi, from_var);
2405 ir_node *const base = deref_address(dbgi, from_var->base.type, addr);
2406 value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(from_type));
2408 if (to_var != NULL) {
2409 ir_node *const addr = get_global_var_address(dbgi, to_var);
2410 ir_node *const base = deref_address(dbgi, to_var->base.type, addr);
2411 value_node = new_d_Sub(dbgi, value_node, base, mode);
2416 if (is_type_atomic(type, ATOMIC_TYPE_BOOL)) {
2417 /* bool adjustments (we save a mode_Bu, but have to temporarily
2418 * convert to mode_b so we only get a 0/1 value */
2419 value_node = create_conv(dbgi, value_node, mode_b);
2422 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
2423 ir_node *node = create_conv(dbgi, value_node, mode);
2424 node = do_strict_conv(dbgi, node);
2425 node = create_conv(dbgi, node, mode_arith);
2430 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2432 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2433 type_t *type = skip_typeref(expression->base.type);
2435 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2436 return expression_to_addr(expression->value);
2438 const expression_t *value = expression->value;
2440 switch(expression->base.kind) {
2441 case EXPR_UNARY_NEGATE: {
2442 ir_node *value_node = expression_to_firm(value);
2443 ir_mode *mode = get_ir_mode_arithmetic(type);
2444 return new_d_Minus(dbgi, value_node, mode);
2446 case EXPR_UNARY_PLUS:
2447 return expression_to_firm(value);
2448 case EXPR_UNARY_BITWISE_NEGATE: {
2449 ir_node *value_node = expression_to_firm(value);
2450 ir_mode *mode = get_ir_mode_arithmetic(type);
2451 return new_d_Not(dbgi, value_node, mode);
2453 case EXPR_UNARY_NOT: {
2454 ir_node *value_node = _expression_to_firm(value);
2455 value_node = create_conv(dbgi, value_node, mode_b);
2456 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2459 case EXPR_UNARY_DEREFERENCE: {
2460 ir_node *value_node = expression_to_firm(value);
2461 type_t *value_type = skip_typeref(value->base.type);
2462 assert(is_type_pointer(value_type));
2464 /* check for __based */
2465 const variable_t *const base_var = value_type->pointer.base_variable;
2466 if (base_var != NULL) {
2467 ir_node *const addr = get_global_var_address(dbgi, base_var);
2468 ir_node *const base = deref_address(dbgi, base_var->base.type, addr);
2469 value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(value_type));
2471 type_t *points_to = value_type->pointer.points_to;
2472 return deref_address(dbgi, points_to, value_node);
2474 case EXPR_UNARY_POSTFIX_INCREMENT:
2475 case EXPR_UNARY_POSTFIX_DECREMENT:
2476 case EXPR_UNARY_PREFIX_INCREMENT:
2477 case EXPR_UNARY_PREFIX_DECREMENT:
2478 return create_incdec(expression);
2479 case EXPR_UNARY_CAST_IMPLICIT:
2480 case EXPR_UNARY_CAST: {
2481 ir_node *value_node = expression_to_firm(value);
2482 type_t *from_type = value->base.type;
2483 return create_cast(dbgi, value_node, from_type, type);
2485 case EXPR_UNARY_ASSUME:
2486 if (firm_opt.confirm)
2487 return handle_assume(dbgi, value);
2494 panic("invalid UNEXPR type found");
2498 * produces a 0/1 depending of the value of a mode_b node
2500 static ir_node *produce_condition_result(const expression_t *expression,
2501 ir_mode *mode, dbg_info *dbgi)
2503 ir_node *cur_block = get_cur_block();
2505 ir_node *one_block = new_immBlock();
2506 set_cur_block(one_block);
2507 ir_node *one = new_Const(get_mode_one(mode));
2508 ir_node *jmp_one = new_d_Jmp(dbgi);
2510 ir_node *zero_block = new_immBlock();
2511 set_cur_block(zero_block);
2512 ir_node *zero = new_Const(get_mode_null(mode));
2513 ir_node *jmp_zero = new_d_Jmp(dbgi);
2515 set_cur_block(cur_block);
2516 create_condition_evaluation(expression, one_block, zero_block);
2517 mature_immBlock(one_block);
2518 mature_immBlock(zero_block);
2520 ir_node *in_cf[2] = { jmp_one, jmp_zero };
2521 new_Block(2, in_cf);
2523 ir_node *in[2] = { one, zero };
2524 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2529 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2530 ir_node *value, type_t *type)
2532 ir_mode *const mode = get_ir_mode_arithmetic(type_ptrdiff_t);
2533 assert(is_type_pointer(type));
2534 pointer_type_t *const pointer_type = &type->pointer;
2535 type_t *const points_to = skip_typeref(pointer_type->points_to);
2536 ir_node * elem_size = get_type_size_node(points_to);
2537 elem_size = create_conv(dbgi, elem_size, mode);
2538 value = create_conv(dbgi, value, mode);
2539 ir_node *const mul = new_d_Mul(dbgi, value, elem_size, mode);
2543 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2544 ir_node *left, ir_node *right)
2547 type_t *type_left = skip_typeref(expression->left->base.type);
2548 type_t *type_right = skip_typeref(expression->right->base.type);
2550 expression_kind_t kind = expression->base.kind;
2553 case EXPR_BINARY_SHIFTLEFT:
2554 case EXPR_BINARY_SHIFTRIGHT:
2555 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2556 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2557 mode = get_irn_mode(left);
2558 right = create_conv(dbgi, right, mode_uint);
2561 case EXPR_BINARY_SUB:
2562 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2563 const pointer_type_t *const ptr_type = &type_left->pointer;
2565 mode = get_ir_mode_arithmetic(expression->base.type);
2566 ir_node *const elem_size = get_type_size_node(ptr_type->points_to);
2567 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2568 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2569 ir_node *const no_mem = new_NoMem();
2570 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2571 mode, op_pin_state_floats);
2572 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2575 case EXPR_BINARY_SUB_ASSIGN:
2576 if (is_type_pointer(type_left)) {
2577 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2578 mode = get_ir_mode_arithmetic(type_left);
2583 case EXPR_BINARY_ADD:
2584 case EXPR_BINARY_ADD_ASSIGN:
2585 if (is_type_pointer(type_left)) {
2586 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2587 mode = get_ir_mode_arithmetic(type_left);
2589 } else if (is_type_pointer(type_right)) {
2590 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2591 mode = get_ir_mode_arithmetic(type_right);
2598 mode = get_ir_mode_arithmetic(type_right);
2599 left = create_conv(dbgi, left, mode);
2604 case EXPR_BINARY_ADD_ASSIGN:
2605 case EXPR_BINARY_ADD:
2606 return new_d_Add(dbgi, left, right, mode);
2607 case EXPR_BINARY_SUB_ASSIGN:
2608 case EXPR_BINARY_SUB:
2609 return new_d_Sub(dbgi, left, right, mode);
2610 case EXPR_BINARY_MUL_ASSIGN:
2611 case EXPR_BINARY_MUL:
2612 return new_d_Mul(dbgi, left, right, mode);
2613 case EXPR_BINARY_BITWISE_AND:
2614 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2615 return new_d_And(dbgi, left, right, mode);
2616 case EXPR_BINARY_BITWISE_OR:
2617 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2618 return new_d_Or(dbgi, left, right, mode);
2619 case EXPR_BINARY_BITWISE_XOR:
2620 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2621 return new_d_Eor(dbgi, left, right, mode);
2622 case EXPR_BINARY_SHIFTLEFT:
2623 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2624 return new_d_Shl(dbgi, left, right, mode);
2625 case EXPR_BINARY_SHIFTRIGHT:
2626 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2627 if (mode_is_signed(mode)) {
2628 return new_d_Shrs(dbgi, left, right, mode);
2630 return new_d_Shr(dbgi, left, right, mode);
2632 case EXPR_BINARY_DIV:
2633 case EXPR_BINARY_DIV_ASSIGN: {
2634 ir_node *pin = new_Pin(new_NoMem());
2637 if (mode_is_float(mode)) {
2638 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2639 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2641 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2642 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2646 case EXPR_BINARY_MOD:
2647 case EXPR_BINARY_MOD_ASSIGN: {
2648 ir_node *pin = new_Pin(new_NoMem());
2649 assert(!mode_is_float(mode));
2650 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2651 op_pin_state_floats);
2652 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2656 panic("unexpected expression kind");
2660 static ir_node *create_lazy_op(const binary_expression_t *expression)
2662 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2663 type_t *type = skip_typeref(expression->base.type);
2664 ir_mode *mode = get_ir_mode_arithmetic(type);
2666 if (is_constant_expression(expression->left)) {
2667 bool val = fold_constant_to_bool(expression->left);
2668 expression_kind_t ekind = expression->base.kind;
2669 assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
2670 if (ekind == EXPR_BINARY_LOGICAL_AND) {
2672 return new_Const(get_mode_null(mode));
2676 return new_Const(get_mode_one(mode));
2680 if (is_constant_expression(expression->right)) {
2681 bool valr = fold_constant_to_bool(expression->right);
2683 new_Const(get_mode_one(mode)) :
2684 new_Const(get_mode_null(mode));
2687 return produce_condition_result(expression->right, mode, dbgi);
2690 return produce_condition_result((const expression_t*) expression, mode,
2694 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2695 ir_node *right, ir_mode *mode);
2697 static ir_node *create_assign_binop(const binary_expression_t *expression)
2699 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2700 const expression_t *left_expr = expression->left;
2701 type_t *type = skip_typeref(left_expr->base.type);
2702 ir_node *right = expression_to_firm(expression->right);
2703 ir_node *left_addr = expression_to_addr(left_expr);
2704 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2705 ir_node *result = create_op(dbgi, expression, left, right);
2707 result = create_cast(dbgi, result, expression->right->base.type, type);
2708 result = do_strict_conv(dbgi, result);
2710 result = set_value_for_expression_addr(left_expr, result, left_addr);
2712 if (!is_type_compound(type)) {
2713 ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
2714 result = create_conv(dbgi, result, mode_arithmetic);
2719 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2721 expression_kind_t kind = expression->base.kind;
2724 case EXPR_BINARY_EQUAL:
2725 case EXPR_BINARY_NOTEQUAL:
2726 case EXPR_BINARY_LESS:
2727 case EXPR_BINARY_LESSEQUAL:
2728 case EXPR_BINARY_GREATER:
2729 case EXPR_BINARY_GREATEREQUAL:
2730 case EXPR_BINARY_ISGREATER:
2731 case EXPR_BINARY_ISGREATEREQUAL:
2732 case EXPR_BINARY_ISLESS:
2733 case EXPR_BINARY_ISLESSEQUAL:
2734 case EXPR_BINARY_ISLESSGREATER:
2735 case EXPR_BINARY_ISUNORDERED: {
2736 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2737 ir_node *left = expression_to_firm(expression->left);
2738 ir_node *right = expression_to_firm(expression->right);
2739 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2740 long pnc = get_pnc(kind, expression->left->base.type);
2741 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2744 case EXPR_BINARY_ASSIGN: {
2745 ir_node *addr = expression_to_addr(expression->left);
2746 ir_node *right = expression_to_firm(expression->right);
2748 = set_value_for_expression_addr(expression->left, right, addr);
2750 type_t *type = skip_typeref(expression->base.type);
2751 if (!is_type_compound(type)) {
2752 ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
2753 res = create_conv(NULL, res, mode_arithmetic);
2757 case EXPR_BINARY_ADD:
2758 case EXPR_BINARY_SUB:
2759 case EXPR_BINARY_MUL:
2760 case EXPR_BINARY_DIV:
2761 case EXPR_BINARY_MOD:
2762 case EXPR_BINARY_BITWISE_AND:
2763 case EXPR_BINARY_BITWISE_OR:
2764 case EXPR_BINARY_BITWISE_XOR:
2765 case EXPR_BINARY_SHIFTLEFT:
2766 case EXPR_BINARY_SHIFTRIGHT:
2768 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2769 ir_node *left = expression_to_firm(expression->left);
2770 ir_node *right = expression_to_firm(expression->right);
2771 return create_op(dbgi, expression, left, right);
2773 case EXPR_BINARY_LOGICAL_AND:
2774 case EXPR_BINARY_LOGICAL_OR:
2775 return create_lazy_op(expression);
2776 case EXPR_BINARY_COMMA:
2777 /* create side effects of left side */
2778 (void) expression_to_firm(expression->left);
2779 return _expression_to_firm(expression->right);
2781 case EXPR_BINARY_ADD_ASSIGN:
2782 case EXPR_BINARY_SUB_ASSIGN:
2783 case EXPR_BINARY_MUL_ASSIGN:
2784 case EXPR_BINARY_MOD_ASSIGN:
2785 case EXPR_BINARY_DIV_ASSIGN:
2786 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2787 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2788 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2789 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2790 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2791 return create_assign_binop(expression);
2793 panic("TODO binexpr type");
2797 static ir_node *array_access_addr(const array_access_expression_t *expression)
2799 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2800 ir_node *base_addr = expression_to_firm(expression->array_ref);
2801 ir_node *offset = expression_to_firm(expression->index);
2802 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2803 ir_node *real_offset = adjust_for_pointer_arithmetic(dbgi, offset, ref_type);
2804 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2809 static ir_node *array_access_to_firm(
2810 const array_access_expression_t *expression)
2812 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2813 ir_node *addr = array_access_addr(expression);
2814 type_t *type = revert_automatic_type_conversion(
2815 (const expression_t*) expression);
2816 type = skip_typeref(type);
2818 return deref_address(dbgi, type, addr);
2821 static long get_offsetof_offset(const offsetof_expression_t *expression)
2823 type_t *orig_type = expression->type;
2826 designator_t *designator = expression->designator;
2827 for ( ; designator != NULL; designator = designator->next) {
2828 type_t *type = skip_typeref(orig_type);
2829 /* be sure the type is constructed */
2830 (void) get_ir_type(type);
2832 if (designator->symbol != NULL) {
2833 assert(is_type_compound(type));
2834 symbol_t *symbol = designator->symbol;
2836 compound_t *compound = type->compound.compound;
2837 entity_t *iter = compound->members.entities;
2838 for ( ; iter != NULL; iter = iter->base.next) {
2839 if (iter->base.symbol == symbol) {
2843 assert(iter != NULL);
2845 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
2846 assert(iter->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2847 offset += get_entity_offset(iter->compound_member.entity);
2849 orig_type = iter->declaration.type;
2851 expression_t *array_index = designator->array_index;
2852 assert(designator->array_index != NULL);
2853 assert(is_type_array(type));
2855 long index = fold_constant_to_int(array_index);
2856 ir_type *arr_type = get_ir_type(type);
2857 ir_type *elem_type = get_array_element_type(arr_type);
2858 long elem_size = get_type_size_bytes(elem_type);
2860 offset += index * elem_size;
2862 orig_type = type->array.element_type;
2869 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2871 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2872 long offset = get_offsetof_offset(expression);
2873 tarval *tv = new_tarval_from_long(offset, mode);
2874 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2876 return new_d_Const(dbgi, tv);
2879 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2880 ir_entity *entity, type_t *type);
2882 static ir_node *compound_literal_to_firm(
2883 const compound_literal_expression_t *expression)
2885 type_t *type = expression->type;
2887 /* create an entity on the stack */
2888 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2890 ident *const id = id_unique("CompLit.%u");
2891 ir_type *const irtype = get_ir_type(type);
2892 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2893 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2894 set_entity_ld_ident(entity, id);
2896 /* create initialisation code */
2897 initializer_t *initializer = expression->initializer;
2898 create_local_initializer(initializer, dbgi, entity, type);
2900 /* create a sel for the compound literal address */
2901 ir_node *frame = get_irg_frame(current_ir_graph);
2902 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2907 * Transform a sizeof expression into Firm code.
2909 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2911 type_t *const type = skip_typeref(expression->type);
2912 /* §6.5.3.4:2 if the type is a VLA, evaluate the expression. */
2913 if (is_type_array(type) && type->array.is_vla
2914 && expression->tp_expression != NULL) {
2915 expression_to_firm(expression->tp_expression);
2918 return get_type_size_node(type);
2921 static entity_t *get_expression_entity(const expression_t *expression)
2923 if (expression->kind != EXPR_REFERENCE)
2926 return expression->reference.entity;
2929 static unsigned get_cparser_entity_alignment(const entity_t *entity)
2931 switch(entity->kind) {
2932 DECLARATION_KIND_CASES
2933 return entity->declaration.alignment;
2936 return entity->compound.alignment;
2937 case ENTITY_TYPEDEF:
2938 return entity->typedefe.alignment;
2946 * Transform an alignof expression into Firm code.
2948 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2950 unsigned alignment = 0;
2952 const expression_t *tp_expression = expression->tp_expression;
2953 if (tp_expression != NULL) {
2954 entity_t *entity = get_expression_entity(tp_expression);
2955 if (entity != NULL) {
2956 alignment = get_cparser_entity_alignment(entity);
2960 if (alignment == 0) {
2961 type_t *type = expression->type;
2962 alignment = get_type_alignment(type);
2965 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2966 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2967 tarval *tv = new_tarval_from_long(alignment, mode);
2968 return new_d_Const(dbgi, tv);
2971 static void init_ir_types(void);
2973 static tarval *fold_constant_to_tarval(const expression_t *expression)
2975 assert(is_type_valid(skip_typeref(expression->base.type)));
2977 bool constant_folding_old = constant_folding;
2978 constant_folding = true;
2982 assert(is_constant_expression(expression));
2984 ir_graph *old_current_ir_graph = current_ir_graph;
2985 current_ir_graph = get_const_code_irg();
2987 ir_node *cnst = expression_to_firm(expression);
2988 current_ir_graph = old_current_ir_graph;
2990 if (!is_Const(cnst)) {
2991 panic("couldn't fold constant");
2994 constant_folding = constant_folding_old;
2996 tarval *tv = get_Const_tarval(cnst);
3000 long fold_constant_to_int(const expression_t *expression)
3002 if (expression->kind == EXPR_INVALID)
3005 tarval *tv = fold_constant_to_tarval(expression);
3006 if (!tarval_is_long(tv)) {
3007 panic("result of constant folding is not integer");
3010 return get_tarval_long(tv);
3013 bool fold_constant_to_bool(const expression_t *expression)
3015 if (expression->kind == EXPR_INVALID)
3017 tarval *tv = fold_constant_to_tarval(expression);
3018 return !tarval_is_null(tv);
3021 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
3023 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
3025 /* first try to fold a constant condition */
3026 if (is_constant_expression(expression->condition)) {
3027 bool val = fold_constant_to_bool(expression->condition);
3029 expression_t *true_expression = expression->true_expression;
3030 if (true_expression == NULL)
3031 true_expression = expression->condition;
3032 return expression_to_firm(true_expression);
3034 return expression_to_firm(expression->false_expression);
3038 ir_node *cur_block = get_cur_block();
3040 /* create the true block */
3041 ir_node *true_block = new_immBlock();
3042 set_cur_block(true_block);
3044 ir_node *true_val = expression->true_expression != NULL ?
3045 expression_to_firm(expression->true_expression) : NULL;
3046 ir_node *true_jmp = new_Jmp();
3048 /* create the false block */
3049 ir_node *false_block = new_immBlock();
3050 set_cur_block(false_block);
3052 ir_node *false_val = expression_to_firm(expression->false_expression);
3053 ir_node *false_jmp = new_Jmp();
3055 /* create the condition evaluation */
3056 set_cur_block(cur_block);
3057 ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
3058 if (expression->true_expression == NULL) {
3059 if (cond_expr != NULL && get_irn_mode(cond_expr) != mode_b) {
3060 true_val = cond_expr;
3062 /* Condition ended with a short circuit (&&, ||, !) operation or a
3063 * comparison. Generate a "1" as value for the true branch. */
3064 true_val = new_Const(get_mode_one(mode_Is));
3067 mature_immBlock(true_block);
3068 mature_immBlock(false_block);
3070 /* create the common block */
3071 ir_node *in_cf[2] = { true_jmp, false_jmp };
3072 new_Block(2, in_cf);
3074 /* TODO improve static semantics, so either both or no values are NULL */
3075 if (true_val == NULL || false_val == NULL)
3078 ir_node *in[2] = { true_val, false_val };
3079 ir_mode *mode = get_irn_mode(true_val);
3080 assert(get_irn_mode(false_val) == mode);
3081 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
3087 * Returns an IR-node representing the address of a field.
3089 static ir_node *select_addr(const select_expression_t *expression)
3091 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3093 construct_select_compound(expression);
3095 ir_node *compound_addr = expression_to_firm(expression->compound);
3097 entity_t *entry = expression->compound_entry;
3098 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3099 assert(entry->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
3101 if (constant_folding) {
3102 ir_mode *mode = get_irn_mode(compound_addr);
3103 /* FIXME: here, we need an integer mode with the same number of bits as mode */
3104 ir_node *ofs = new_Const_long(mode_uint, entry->compound_member.offset);
3105 return new_d_Add(dbgi, compound_addr, ofs, mode);
3107 ir_entity *irentity = entry->compound_member.entity;
3108 assert(irentity != NULL);
3109 return new_d_simpleSel(dbgi, new_NoMem(), compound_addr, irentity);
3113 static ir_node *select_to_firm(const select_expression_t *expression)
3115 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3116 ir_node *addr = select_addr(expression);
3117 type_t *type = revert_automatic_type_conversion(
3118 (const expression_t*) expression);
3119 type = skip_typeref(type);
3121 entity_t *entry = expression->compound_entry;
3122 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3123 type_t *entry_type = skip_typeref(entry->declaration.type);
3125 if (entry_type->kind == TYPE_BITFIELD) {
3126 return bitfield_extract_to_firm(expression, addr);
3129 return deref_address(dbgi, type, addr);
3132 /* Values returned by __builtin_classify_type. */
3133 typedef enum gcc_type_class
3139 enumeral_type_class,
3142 reference_type_class,
3146 function_type_class,
3157 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
3159 type_t *type = expr->type_expression->base.type;
3161 /* FIXME gcc returns different values depending on whether compiling C or C++
3162 * e.g. int x[10] is pointer_type_class in C, but array_type_class in C++ */
3165 type = skip_typeref(type);
3166 switch (type->kind) {
3168 const atomic_type_t *const atomic_type = &type->atomic;
3169 switch (atomic_type->akind) {
3170 /* should not be reached */
3171 case ATOMIC_TYPE_INVALID:
3175 /* gcc cannot do that */
3176 case ATOMIC_TYPE_VOID:
3177 tc = void_type_class;
3180 case ATOMIC_TYPE_WCHAR_T: /* gcc handles this as integer */
3181 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
3182 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
3183 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
3184 case ATOMIC_TYPE_SHORT:
3185 case ATOMIC_TYPE_USHORT:
3186 case ATOMIC_TYPE_INT:
3187 case ATOMIC_TYPE_UINT:
3188 case ATOMIC_TYPE_LONG:
3189 case ATOMIC_TYPE_ULONG:
3190 case ATOMIC_TYPE_LONGLONG:
3191 case ATOMIC_TYPE_ULONGLONG:
3192 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
3193 tc = integer_type_class;
3196 case ATOMIC_TYPE_FLOAT:
3197 case ATOMIC_TYPE_DOUBLE:
3198 case ATOMIC_TYPE_LONG_DOUBLE:
3199 tc = real_type_class;
3202 panic("Unexpected atomic type in classify_type_to_firm().");
3205 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
3206 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
3207 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
3208 case TYPE_ARRAY: /* gcc handles this as pointer */
3209 case TYPE_FUNCTION: /* gcc handles this as pointer */
3210 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
3211 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
3212 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
3214 /* gcc handles this as integer */
3215 case TYPE_ENUM: tc = integer_type_class; goto make_const;
3217 /* gcc classifies the referenced type */
3218 case TYPE_REFERENCE: type = type->reference.refers_to; continue;
3221 /* typedef/typeof should be skipped already */
3228 panic("unexpected TYPE classify_type_to_firm().");
3232 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3233 tarval *const tv = new_tarval_from_long(tc, mode_int);
3234 return new_d_Const(dbgi, tv);
3237 static ir_node *function_name_to_firm(
3238 const funcname_expression_t *const expr)
3240 switch(expr->kind) {
3241 case FUNCNAME_FUNCTION:
3242 case FUNCNAME_PRETTY_FUNCTION:
3243 case FUNCNAME_FUNCDNAME:
3244 if (current_function_name == NULL) {
3245 const source_position_t *const src_pos = &expr->base.source_position;
3246 const char *name = current_function_entity->base.symbol->string;
3247 const string_t string = { name, strlen(name) + 1 };
3248 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
3250 return current_function_name;
3251 case FUNCNAME_FUNCSIG:
3252 if (current_funcsig == NULL) {
3253 const source_position_t *const src_pos = &expr->base.source_position;
3254 ir_entity *ent = get_irg_entity(current_ir_graph);
3255 const char *const name = get_entity_ld_name(ent);
3256 const string_t string = { name, strlen(name) + 1 };
3257 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
3259 return current_funcsig;
3261 panic("Unsupported function name");
3264 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
3266 statement_t *statement = expr->statement;
3268 assert(statement->kind == STATEMENT_COMPOUND);
3269 return compound_statement_to_firm(&statement->compound);
3272 static ir_node *va_start_expression_to_firm(
3273 const va_start_expression_t *const expr)
3275 type_t *const type = current_function_entity->declaration.type;
3276 ir_type *const method_type = get_ir_type(type);
3277 int const n = get_method_n_params(method_type) - 1;
3278 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
3279 ir_node *const frame = get_irg_frame(current_ir_graph);
3280 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3281 ir_node *const no_mem = new_NoMem();
3282 ir_node *const arg_sel =
3283 new_d_simpleSel(dbgi, no_mem, frame, parm_ent);
3285 type_t *const param_type = expr->parameter->base.type;
3286 ir_node *const cnst = get_type_size_node(param_type);
3287 ir_mode *const mode = get_irn_mode(cnst);
3288 ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
3289 ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
3290 ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align);
3291 ir_node *const c4 = new_d_And(dbgi, c2, c3, mode);
3292 ir_node *const add = new_d_Add(dbgi, arg_sel, c4, mode_P_data);
3293 set_value_for_expression(expr->ap, add);
3298 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
3300 type_t *const type = expr->base.type;
3301 expression_t *const ap_expr = expr->ap;
3302 ir_node *const ap_addr = expression_to_addr(ap_expr);
3303 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
3304 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3305 ir_node *const res = deref_address(dbgi, type, ap);
3307 ir_node *const cnst = get_type_size_node(expr->base.type);
3308 ir_mode *const mode = get_irn_mode(cnst);
3309 ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
3310 ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
3311 ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align);
3312 ir_node *const c4 = new_d_And(dbgi, c2, c3, mode);
3313 ir_node *const add = new_d_Add(dbgi, ap, c4, mode_P_data);
3315 set_value_for_expression_addr(ap_expr, add, ap_addr);
3321 * Generate Firm for a va_copy expression.
3323 static ir_node *va_copy_expression_to_firm(const va_copy_expression_t *const expr)
3325 ir_node *const src = expression_to_firm(expr->src);
3326 set_value_for_expression(expr->dst, src);
3330 static ir_node *dereference_addr(const unary_expression_t *const expression)
3332 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
3333 return expression_to_firm(expression->value);
3337 * Returns a IR-node representing an lvalue of the given expression.
3339 static ir_node *expression_to_addr(const expression_t *expression)
3341 switch(expression->kind) {
3342 case EXPR_ARRAY_ACCESS:
3343 return array_access_addr(&expression->array_access);
3345 return call_expression_to_firm(&expression->call);
3346 case EXPR_COMPOUND_LITERAL:
3347 return compound_literal_to_firm(&expression->compound_literal);
3348 case EXPR_REFERENCE:
3349 return reference_addr(&expression->reference);
3351 return select_addr(&expression->select);
3352 case EXPR_UNARY_DEREFERENCE:
3353 return dereference_addr(&expression->unary);
3357 panic("trying to get address of non-lvalue");
3360 static ir_node *builtin_constant_to_firm(
3361 const builtin_constant_expression_t *expression)
3363 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3366 if (is_constant_expression(expression->value)) {
3371 return new_Const_long(mode, v);
3374 static ir_node *builtin_types_compatible_to_firm(
3375 const builtin_types_compatible_expression_t *expression)
3377 type_t *const left = get_unqualified_type(skip_typeref(expression->left));
3378 type_t *const right = get_unqualified_type(skip_typeref(expression->right));
3379 long const value = types_compatible(left, right) ? 1 : 0;
3380 ir_mode *const mode = get_ir_mode_arithmetic(expression->base.type);
3381 return new_Const_long(mode, value);
3384 static ir_node *get_label_block(label_t *label)
3386 if (label->block != NULL)
3387 return label->block;
3389 /* beware: might be called from create initializer with current_ir_graph
3390 * set to const_code_irg. */
3391 ir_graph *rem = current_ir_graph;
3392 current_ir_graph = current_function;
3394 ir_node *block = new_immBlock();
3396 label->block = block;
3398 ARR_APP1(label_t *, all_labels, label);
3400 current_ir_graph = rem;
3405 * Pointer to a label. This is used for the
3406 * GNU address-of-label extension.
3408 static ir_node *label_address_to_firm(const label_address_expression_t *label)
3410 dbg_info *dbgi = get_dbg_info(&label->base.source_position);
3411 ir_node *block = get_label_block(label->label);
3412 ir_entity *entity = create_Block_entity(block);
3414 symconst_symbol value;
3415 value.entity_p = entity;
3416 return new_d_SymConst(dbgi, mode_P_code, value, symconst_addr_ent);
3420 * creates firm nodes for an expression. The difference between this function
3421 * and expression_to_firm is, that this version might produce mode_b nodes
3422 * instead of mode_Is.
3424 static ir_node *_expression_to_firm(const expression_t *expression)
3427 if (!constant_folding) {
3428 assert(!expression->base.transformed);
3429 ((expression_t*) expression)->base.transformed = true;
3433 switch (expression->kind) {
3434 case EXPR_CHARACTER_CONSTANT:
3435 return character_constant_to_firm(&expression->conste);
3436 case EXPR_WIDE_CHARACTER_CONSTANT:
3437 return wide_character_constant_to_firm(&expression->conste);
3439 return const_to_firm(&expression->conste);
3440 case EXPR_STRING_LITERAL:
3441 return string_literal_to_firm(&expression->string);
3442 case EXPR_WIDE_STRING_LITERAL:
3443 return wide_string_literal_to_firm(&expression->wide_string);
3444 case EXPR_REFERENCE:
3445 return reference_expression_to_firm(&expression->reference);
3446 case EXPR_REFERENCE_ENUM_VALUE:
3447 return reference_expression_enum_value_to_firm(&expression->reference);
3449 return call_expression_to_firm(&expression->call);
3451 return unary_expression_to_firm(&expression->unary);
3453 return binary_expression_to_firm(&expression->binary);
3454 case EXPR_ARRAY_ACCESS:
3455 return array_access_to_firm(&expression->array_access);
3457 return sizeof_to_firm(&expression->typeprop);
3459 return alignof_to_firm(&expression->typeprop);
3460 case EXPR_CONDITIONAL:
3461 return conditional_to_firm(&expression->conditional);
3463 return select_to_firm(&expression->select);
3464 case EXPR_CLASSIFY_TYPE:
3465 return classify_type_to_firm(&expression->classify_type);
3467 return function_name_to_firm(&expression->funcname);
3468 case EXPR_STATEMENT:
3469 return statement_expression_to_firm(&expression->statement);
3471 return va_start_expression_to_firm(&expression->va_starte);
3473 return va_arg_expression_to_firm(&expression->va_arge);
3475 return va_copy_expression_to_firm(&expression->va_copye);
3476 case EXPR_BUILTIN_CONSTANT_P:
3477 return builtin_constant_to_firm(&expression->builtin_constant);
3478 case EXPR_BUILTIN_TYPES_COMPATIBLE_P:
3479 return builtin_types_compatible_to_firm(&expression->builtin_types_compatible);
3481 return offsetof_to_firm(&expression->offsetofe);
3482 case EXPR_COMPOUND_LITERAL:
3483 return compound_literal_to_firm(&expression->compound_literal);
3484 case EXPR_LABEL_ADDRESS:
3485 return label_address_to_firm(&expression->label_address);
3491 panic("invalid expression found");
3495 * Check if a given expression is a GNU __builtin_expect() call.
3497 static bool is_builtin_expect(const expression_t *expression)
3499 if (expression->kind != EXPR_CALL)
3502 expression_t *function = expression->call.function;
3503 if (function->kind != EXPR_REFERENCE)
3505 reference_expression_t *ref = &function->reference;
3506 if (ref->entity->kind != ENTITY_FUNCTION ||
3507 ref->entity->function.btk != bk_gnu_builtin_expect)
3513 static bool produces_mode_b(const expression_t *expression)
3515 switch (expression->kind) {
3516 case EXPR_BINARY_EQUAL:
3517 case EXPR_BINARY_NOTEQUAL:
3518 case EXPR_BINARY_LESS:
3519 case EXPR_BINARY_LESSEQUAL:
3520 case EXPR_BINARY_GREATER:
3521 case EXPR_BINARY_GREATEREQUAL:
3522 case EXPR_BINARY_ISGREATER:
3523 case EXPR_BINARY_ISGREATEREQUAL:
3524 case EXPR_BINARY_ISLESS:
3525 case EXPR_BINARY_ISLESSEQUAL:
3526 case EXPR_BINARY_ISLESSGREATER:
3527 case EXPR_BINARY_ISUNORDERED:
3528 case EXPR_UNARY_NOT:
3532 if (is_builtin_expect(expression)) {
3533 expression_t *argument = expression->call.arguments->expression;
3534 return produces_mode_b(argument);
3537 case EXPR_BINARY_COMMA:
3538 return produces_mode_b(expression->binary.right);
3545 static ir_node *expression_to_firm(const expression_t *expression)
3547 if (!produces_mode_b(expression)) {
3548 ir_node *res = _expression_to_firm(expression);
3549 assert(res == NULL || get_irn_mode(res) != mode_b);
3553 if (is_constant_expression(expression)) {
3554 ir_node *res = _expression_to_firm(expression);
3555 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3556 assert(is_Const(res));
3557 if (is_Const_null(res)) {
3558 return new_Const_long(mode, 0);
3560 return new_Const_long(mode, 1);
3564 /* we have to produce a 0/1 from the mode_b expression */
3565 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3566 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3567 return produce_condition_result(expression, mode, dbgi);
3571 * create a short-circuit expression evaluation that tries to construct
3572 * efficient control flow structures for &&, || and ! expressions
3574 static ir_node *create_condition_evaluation(const expression_t *expression,
3575 ir_node *true_block,
3576 ir_node *false_block)
3578 switch(expression->kind) {
3579 case EXPR_UNARY_NOT: {
3580 const unary_expression_t *unary_expression = &expression->unary;
3581 create_condition_evaluation(unary_expression->value, false_block,
3585 case EXPR_BINARY_LOGICAL_AND: {
3586 const binary_expression_t *binary_expression = &expression->binary;
3588 ir_node *extra_block = new_immBlock();
3589 create_condition_evaluation(binary_expression->left, extra_block,
3591 mature_immBlock(extra_block);
3592 set_cur_block(extra_block);
3593 create_condition_evaluation(binary_expression->right, true_block,
3597 case EXPR_BINARY_LOGICAL_OR: {
3598 const binary_expression_t *binary_expression = &expression->binary;
3600 ir_node *extra_block = new_immBlock();
3601 create_condition_evaluation(binary_expression->left, true_block,
3603 mature_immBlock(extra_block);
3604 set_cur_block(extra_block);
3605 create_condition_evaluation(binary_expression->right, true_block,
3613 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3614 ir_node *cond_expr = _expression_to_firm(expression);
3615 ir_node *condition = create_conv(dbgi, cond_expr, mode_b);
3616 ir_node *cond = new_d_Cond(dbgi, condition);
3617 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3618 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3620 /* set branch prediction info based on __builtin_expect */
3621 if (is_builtin_expect(expression) && is_Cond(cond)) {
3622 call_argument_t *argument = expression->call.arguments->next;
3623 if (is_constant_expression(argument->expression)) {
3624 bool cnst = fold_constant_to_bool(argument->expression);
3625 cond_jmp_predicate pred;
3627 if (cnst == false) {
3628 pred = COND_JMP_PRED_FALSE;
3630 pred = COND_JMP_PRED_TRUE;
3632 set_Cond_jmp_pred(cond, pred);
3636 add_immBlock_pred(true_block, true_proj);
3637 add_immBlock_pred(false_block, false_proj);
3639 set_cur_block(NULL);
3643 static void create_variable_entity(entity_t *variable,
3644 declaration_kind_t declaration_kind,
3645 ir_type *parent_type)
3647 assert(variable->kind == ENTITY_VARIABLE);
3648 type_t *type = skip_typeref(variable->declaration.type);
3650 ident *const id = new_id_from_str(variable->base.symbol->string);
3651 ir_type *const irtype = get_ir_type(type);
3652 dbg_info *const dbgi = get_dbg_info(&variable->base.source_position);
3653 ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi);
3654 unsigned alignment = variable->declaration.alignment;
3656 set_entity_alignment(irentity, alignment);
3658 handle_decl_modifiers(irentity, variable);
3660 variable->declaration.kind = (unsigned char) declaration_kind;
3661 variable->variable.v.entity = irentity;
3662 set_entity_ld_ident(irentity, create_ld_ident(variable));
3664 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3665 set_entity_volatility(irentity, volatility_is_volatile);
3670 typedef struct type_path_entry_t type_path_entry_t;
3671 struct type_path_entry_t {
3673 ir_initializer_t *initializer;
3675 entity_t *compound_entry;
3678 typedef struct type_path_t type_path_t;
3679 struct type_path_t {
3680 type_path_entry_t *path;
3685 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3687 size_t len = ARR_LEN(path->path);
3689 for (size_t i = 0; i < len; ++i) {
3690 const type_path_entry_t *entry = & path->path[i];
3692 type_t *type = skip_typeref(entry->type);
3693 if (is_type_compound(type)) {
3694 fprintf(stderr, ".%s", entry->compound_entry->base.symbol->string);
3695 } else if (is_type_array(type)) {
3696 fprintf(stderr, "[%u]", (unsigned) entry->index);
3698 fprintf(stderr, "-INVALID-");
3701 fprintf(stderr, " (");
3702 print_type(path->top_type);
3703 fprintf(stderr, ")");
3706 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3708 size_t len = ARR_LEN(path->path);
3710 return & path->path[len-1];
3713 static type_path_entry_t *append_to_type_path(type_path_t *path)
3715 size_t len = ARR_LEN(path->path);
3716 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3718 type_path_entry_t *result = & path->path[len];
3719 memset(result, 0, sizeof(result[0]));
3723 static size_t get_compound_member_count(const compound_type_t *type)
3725 compound_t *compound = type->compound;
3726 size_t n_members = 0;
3727 entity_t *member = compound->members.entities;
3728 for ( ; member != NULL; member = member->base.next) {
3735 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3737 type_t *orig_top_type = path->top_type;
3738 type_t *top_type = skip_typeref(orig_top_type);
3740 assert(is_type_compound(top_type) || is_type_array(top_type));
3742 if (ARR_LEN(path->path) == 0) {
3745 type_path_entry_t *top = get_type_path_top(path);
3746 ir_initializer_t *initializer = top->initializer;
3747 return get_initializer_compound_value(initializer, top->index);
3751 static void descend_into_subtype(type_path_t *path)
3753 type_t *orig_top_type = path->top_type;
3754 type_t *top_type = skip_typeref(orig_top_type);
3756 assert(is_type_compound(top_type) || is_type_array(top_type));
3758 ir_initializer_t *initializer = get_initializer_entry(path);
3760 type_path_entry_t *top = append_to_type_path(path);
3761 top->type = top_type;
3765 if (is_type_compound(top_type)) {
3766 compound_t *compound = top_type->compound.compound;
3767 entity_t *entry = compound->members.entities;
3769 top->compound_entry = entry;
3771 len = get_compound_member_count(&top_type->compound);
3772 if (entry != NULL) {
3773 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3774 path->top_type = entry->declaration.type;
3777 assert(is_type_array(top_type));
3778 assert(top_type->array.size > 0);
3781 path->top_type = top_type->array.element_type;
3782 len = top_type->array.size;
3784 if (initializer == NULL
3785 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3786 initializer = create_initializer_compound(len);
3787 /* we have to set the entry at the 2nd latest path entry... */
3788 size_t path_len = ARR_LEN(path->path);
3789 assert(path_len >= 1);
3791 type_path_entry_t *entry = & path->path[path_len-2];
3792 ir_initializer_t *tinitializer = entry->initializer;
3793 set_initializer_compound_value(tinitializer, entry->index,
3797 top->initializer = initializer;
3800 static void ascend_from_subtype(type_path_t *path)
3802 type_path_entry_t *top = get_type_path_top(path);
3804 path->top_type = top->type;
3806 size_t len = ARR_LEN(path->path);
3807 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3810 static void walk_designator(type_path_t *path, const designator_t *designator)
3812 /* designators start at current object type */
3813 ARR_RESIZE(type_path_entry_t, path->path, 1);
3815 for ( ; designator != NULL; designator = designator->next) {
3816 type_path_entry_t *top = get_type_path_top(path);
3817 type_t *orig_type = top->type;
3818 type_t *type = skip_typeref(orig_type);
3820 if (designator->symbol != NULL) {
3821 assert(is_type_compound(type));
3823 symbol_t *symbol = designator->symbol;
3825 compound_t *compound = type->compound.compound;
3826 entity_t *iter = compound->members.entities;
3827 for ( ; iter != NULL; iter = iter->base.next, ++index) {
3828 if (iter->base.symbol == symbol) {
3829 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
3833 assert(iter != NULL);
3835 /* revert previous initialisations of other union elements */
3836 if (type->kind == TYPE_COMPOUND_UNION) {
3837 ir_initializer_t *initializer = top->initializer;
3838 if (initializer != NULL
3839 && get_initializer_kind(initializer) == IR_INITIALIZER_COMPOUND) {
3840 /* are we writing to a new element? */
3841 ir_initializer_t *oldi
3842 = get_initializer_compound_value(initializer, index);
3843 if (get_initializer_kind(oldi) == IR_INITIALIZER_NULL) {
3844 /* clear initializer */
3846 = get_initializer_compound_n_entries(initializer);
3847 ir_initializer_t *nulli = get_initializer_null();
3848 for (size_t i = 0; i < len; ++i) {
3849 set_initializer_compound_value(initializer, i,
3856 top->type = orig_type;
3857 top->compound_entry = iter;
3859 orig_type = iter->declaration.type;
3861 expression_t *array_index = designator->array_index;
3862 assert(designator->array_index != NULL);
3863 assert(is_type_array(type));
3865 long index = fold_constant_to_int(array_index);
3868 if (type->array.size_constant) {
3869 long array_size = type->array.size;
3870 assert(index < array_size);
3874 top->type = orig_type;
3875 top->index = (size_t) index;
3876 orig_type = type->array.element_type;
3878 path->top_type = orig_type;
3880 if (designator->next != NULL) {
3881 descend_into_subtype(path);
3885 path->invalid = false;
3888 static void advance_current_object(type_path_t *path)
3890 if (path->invalid) {
3891 /* TODO: handle this... */
3892 panic("invalid initializer in ast2firm (excessive elements)");
3895 type_path_entry_t *top = get_type_path_top(path);
3897 type_t *type = skip_typeref(top->type);
3898 if (is_type_union(type)) {
3899 /* only the first element is initialized in unions */
3900 top->compound_entry = NULL;
3901 } else if (is_type_struct(type)) {
3902 entity_t *entry = top->compound_entry;
3905 entry = entry->base.next;
3906 top->compound_entry = entry;
3907 if (entry != NULL) {
3908 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3909 path->top_type = entry->declaration.type;
3913 assert(is_type_array(type));
3916 if (!type->array.size_constant || top->index < type->array.size) {
3921 /* we're past the last member of the current sub-aggregate, try if we
3922 * can ascend in the type hierarchy and continue with another subobject */
3923 size_t len = ARR_LEN(path->path);
3926 ascend_from_subtype(path);
3927 advance_current_object(path);
3929 path->invalid = true;
3934 static ir_initializer_t *create_ir_initializer(
3935 const initializer_t *initializer, type_t *type);
3937 static ir_initializer_t *create_ir_initializer_value(
3938 const initializer_value_t *initializer)
3940 if (is_type_compound(initializer->value->base.type)) {
3941 panic("initializer creation for compounds not implemented yet");
3943 type_t *type = initializer->value->base.type;
3944 expression_t *expr = initializer->value;
3945 if (initializer_use_bitfield_basetype) {
3946 type_t *skipped = skip_typeref(type);
3947 if (skipped->kind == TYPE_BITFIELD) {
3948 /* remove the bitfield cast... */
3949 assert(expr->kind == EXPR_UNARY_CAST_IMPLICIT);
3950 expr = expr->unary.value;
3951 type = skipped->bitfield.base_type;
3954 ir_node *value = expression_to_firm(expr);
3955 ir_mode *mode = get_ir_mode_storage(type);
3956 value = create_conv(NULL, value, mode);
3957 return create_initializer_const(value);
3960 /** test wether type can be initialized by a string constant */
3961 static bool is_string_type(type_t *type)
3964 if (is_type_pointer(type)) {
3965 inner = skip_typeref(type->pointer.points_to);
3966 } else if(is_type_array(type)) {
3967 inner = skip_typeref(type->array.element_type);
3972 return is_type_integer(inner);
3975 static ir_initializer_t *create_ir_initializer_list(
3976 const initializer_list_t *initializer, type_t *type)
3979 memset(&path, 0, sizeof(path));
3980 path.top_type = type;
3981 path.path = NEW_ARR_F(type_path_entry_t, 0);
3983 descend_into_subtype(&path);
3985 for (size_t i = 0; i < initializer->len; ++i) {
3986 const initializer_t *sub_initializer = initializer->initializers[i];
3988 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3989 walk_designator(&path, sub_initializer->designator.designator);
3993 if (sub_initializer->kind == INITIALIZER_VALUE) {
3994 /* we might have to descend into types until we're at a scalar
3997 type_t *orig_top_type = path.top_type;
3998 type_t *top_type = skip_typeref(orig_top_type);
4000 if (is_type_scalar(top_type))
4002 descend_into_subtype(&path);
4004 } else if (sub_initializer->kind == INITIALIZER_STRING
4005 || sub_initializer->kind == INITIALIZER_WIDE_STRING) {
4006 /* we might have to descend into types until we're at a scalar
4009 type_t *orig_top_type = path.top_type;
4010 type_t *top_type = skip_typeref(orig_top_type);
4012 if (is_string_type(top_type))
4014 descend_into_subtype(&path);
4018 ir_initializer_t *sub_irinitializer
4019 = create_ir_initializer(sub_initializer, path.top_type);
4021 size_t path_len = ARR_LEN(path.path);
4022 assert(path_len >= 1);
4023 type_path_entry_t *entry = & path.path[path_len-1];
4024 ir_initializer_t *tinitializer = entry->initializer;
4025 set_initializer_compound_value(tinitializer, entry->index,
4028 advance_current_object(&path);
4031 assert(ARR_LEN(path.path) >= 1);
4032 ir_initializer_t *result = path.path[0].initializer;
4033 DEL_ARR_F(path.path);
4038 static ir_initializer_t *create_ir_initializer_string(
4039 const initializer_string_t *initializer, type_t *type)
4041 type = skip_typeref(type);
4043 size_t string_len = initializer->string.size;
4044 assert(type->kind == TYPE_ARRAY);
4045 assert(type->array.size_constant);
4046 size_t len = type->array.size;
4047 ir_initializer_t *irinitializer = create_initializer_compound(len);
4049 const char *string = initializer->string.begin;
4050 ir_mode *mode = get_ir_mode_storage(type->array.element_type);
4052 for (size_t i = 0; i < len; ++i) {
4057 tarval *tv = new_tarval_from_long(c, mode);
4058 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
4060 set_initializer_compound_value(irinitializer, i, char_initializer);
4063 return irinitializer;
4066 static ir_initializer_t *create_ir_initializer_wide_string(
4067 const initializer_wide_string_t *initializer, type_t *type)
4069 size_t string_len = initializer->string.size;
4070 assert(type->kind == TYPE_ARRAY);
4071 assert(type->array.size_constant);
4072 size_t len = type->array.size;
4073 ir_initializer_t *irinitializer = create_initializer_compound(len);
4075 const wchar_rep_t *string = initializer->string.begin;
4076 ir_mode *mode = get_type_mode(ir_type_wchar_t);
4078 for (size_t i = 0; i < len; ++i) {
4080 if (i < string_len) {
4083 tarval *tv = new_tarval_from_long(c, mode);
4084 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
4086 set_initializer_compound_value(irinitializer, i, char_initializer);
4089 return irinitializer;
4092 static ir_initializer_t *create_ir_initializer(
4093 const initializer_t *initializer, type_t *type)
4095 switch(initializer->kind) {
4096 case INITIALIZER_STRING:
4097 return create_ir_initializer_string(&initializer->string, type);
4099 case INITIALIZER_WIDE_STRING:
4100 return create_ir_initializer_wide_string(&initializer->wide_string,
4103 case INITIALIZER_LIST:
4104 return create_ir_initializer_list(&initializer->list, type);
4106 case INITIALIZER_VALUE:
4107 return create_ir_initializer_value(&initializer->value);
4109 case INITIALIZER_DESIGNATOR:
4110 panic("unexpected designator initializer found");
4112 panic("unknown initializer");
4115 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
4116 ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr)
4118 switch(get_initializer_kind(initializer)) {
4119 case IR_INITIALIZER_NULL: {
4120 /* NULL is undefined for dynamic initializers */
4123 case IR_INITIALIZER_CONST: {
4124 ir_node *node = get_initializer_const_value(initializer);
4125 ir_mode *mode = get_irn_mode(node);
4126 ir_type *ent_type = get_entity_type(entity);
4128 /* is it a bitfield type? */
4129 if (is_Primitive_type(ent_type) &&
4130 get_primitive_base_type(ent_type) != NULL) {
4131 bitfield_store_to_firm(dbgi, entity, base_addr, node, false);
4135 assert(get_type_mode(type) == mode);
4136 ir_node *mem = get_store();
4137 ir_node *store = new_d_Store(dbgi, mem, base_addr, node, cons_none);
4138 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4142 case IR_INITIALIZER_TARVAL: {
4143 tarval *tv = get_initializer_tarval_value(initializer);
4144 ir_mode *mode = get_tarval_mode(tv);
4145 ir_node *cnst = new_d_Const(dbgi, tv);
4146 ir_type *ent_type = get_entity_type(entity);
4148 /* is it a bitfield type? */
4149 if (is_Primitive_type(ent_type) &&
4150 get_primitive_base_type(ent_type) != NULL) {
4151 bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false);
4155 assert(get_type_mode(type) == mode);
4156 ir_node *mem = get_store();
4157 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst, cons_none);
4158 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4162 case IR_INITIALIZER_COMPOUND: {
4163 assert(is_compound_type(type));
4165 if (is_Array_type(type)) {
4166 assert(has_array_upper_bound(type, 0));
4167 n_members = get_array_upper_bound_int(type, 0);
4169 n_members = get_compound_n_members(type);
4172 if (get_initializer_compound_n_entries(initializer)
4173 != (unsigned) n_members)
4174 panic("initializer doesn't match compound type");
4176 for (int i = 0; i < n_members; ++i) {
4179 ir_entity *sub_entity;
4180 if (is_Array_type(type)) {
4181 tarval *index_tv = new_tarval_from_long(i, mode_uint);
4182 ir_node *cnst = new_d_Const(dbgi, index_tv);
4183 ir_node *in[1] = { cnst };
4184 irtype = get_array_element_type(type);
4185 sub_entity = get_array_element_entity(type);
4186 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
4189 sub_entity = get_compound_member(type, i);
4190 irtype = get_entity_type(sub_entity);
4191 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
4195 ir_initializer_t *sub_init
4196 = get_initializer_compound_value(initializer, i);
4198 create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
4205 panic("invalid IR_INITIALIZER found");
4208 static void create_dynamic_initializer(ir_initializer_t *initializer,
4209 dbg_info *dbgi, ir_entity *entity)
4211 ir_node *frame = get_irg_frame(current_ir_graph);
4212 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
4213 ir_type *type = get_entity_type(entity);
4215 create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
4218 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
4219 ir_entity *entity, type_t *type)
4221 ir_node *memory = get_store();
4222 ir_node *nomem = new_NoMem();
4223 ir_node *frame = get_irg_frame(current_ir_graph);
4224 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
4226 if (initializer->kind == INITIALIZER_VALUE) {
4227 initializer_value_t *initializer_value = &initializer->value;
4229 ir_node *value = expression_to_firm(initializer_value->value);
4230 type = skip_typeref(type);
4231 assign_value(dbgi, addr, type, value);
4235 if (!is_constant_initializer(initializer)) {
4236 bool old_initializer_use_bitfield_basetype
4237 = initializer_use_bitfield_basetype;
4238 initializer_use_bitfield_basetype = true;
4239 ir_initializer_t *irinitializer
4240 = create_ir_initializer(initializer, type);
4241 initializer_use_bitfield_basetype
4242 = old_initializer_use_bitfield_basetype;
4244 create_dynamic_initializer(irinitializer, dbgi, entity);
4248 /* create the ir_initializer */
4249 ir_graph *const old_current_ir_graph = current_ir_graph;
4250 current_ir_graph = get_const_code_irg();
4252 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
4254 assert(current_ir_graph == get_const_code_irg());
4255 current_ir_graph = old_current_ir_graph;
4257 /* create a "template" entity which is copied to the entity on the stack */
4258 ident *const id = id_unique("initializer.%u");
4259 ir_type *const irtype = get_ir_type(type);
4260 ir_type *const global_type = get_glob_type();
4261 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
4262 set_entity_ld_ident(init_entity, id);
4264 add_entity_linkage(init_entity, IR_LINKAGE_LOCAL|IR_LINKAGE_CONSTANT);
4266 set_entity_initializer(init_entity, irinitializer);
4268 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
4269 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
4271 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
4272 set_store(copyb_mem);
4275 static void create_initializer_local_variable_entity(entity_t *entity)
4277 assert(entity->kind == ENTITY_VARIABLE);
4278 initializer_t *initializer = entity->variable.initializer;
4279 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4280 ir_entity *irentity = entity->variable.v.entity;
4281 type_t *type = entity->declaration.type;
4283 create_local_initializer(initializer, dbgi, irentity, type);
4286 static void create_variable_initializer(entity_t *entity)
4288 assert(entity->kind == ENTITY_VARIABLE);
4289 initializer_t *initializer = entity->variable.initializer;
4290 if (initializer == NULL)
4293 declaration_kind_t declaration_kind
4294 = (declaration_kind_t) entity->declaration.kind;
4295 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
4296 create_initializer_local_variable_entity(entity);
4300 type_t *type = entity->declaration.type;
4301 type_qualifiers_t tq = get_type_qualifier(type, true);
4303 if (initializer->kind == INITIALIZER_VALUE) {
4304 initializer_value_t *initializer_value = &initializer->value;
4305 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4307 ir_node *value = expression_to_firm(initializer_value->value);
4309 type_t *type = initializer_value->value->base.type;
4310 ir_mode *mode = get_ir_mode_storage(type);
4311 value = create_conv(dbgi, value, mode);
4312 value = do_strict_conv(dbgi, value);
4314 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
4315 set_value(entity->variable.v.value_number, value);
4317 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4319 ir_entity *irentity = entity->variable.v.entity;
4321 if (tq & TYPE_QUALIFIER_CONST) {
4322 add_entity_linkage(irentity, IR_LINKAGE_CONSTANT);
4324 set_atomic_ent_value(irentity, value);
4327 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
4328 declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4330 ir_entity *irentity = entity->variable.v.entity;
4331 ir_initializer_t *irinitializer
4332 = create_ir_initializer(initializer, type);
4334 if (tq & TYPE_QUALIFIER_CONST) {
4335 add_entity_linkage(irentity, IR_LINKAGE_CONSTANT);
4337 set_entity_initializer(irentity, irinitializer);
4341 static void create_variable_length_array(entity_t *entity)
4343 assert(entity->kind == ENTITY_VARIABLE);
4344 assert(entity->variable.initializer == NULL);
4346 entity->declaration.kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
4347 entity->variable.v.vla_base = NULL;
4349 /* TODO: record VLA somewhere so we create the free node when we leave
4353 static void allocate_variable_length_array(entity_t *entity)
4355 assert(entity->kind == ENTITY_VARIABLE);
4356 assert(entity->variable.initializer == NULL);
4357 assert(get_cur_block() != NULL);
4359 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4360 type_t *type = entity->declaration.type;
4361 ir_type *el_type = get_ir_type(type->array.element_type);
4363 /* make sure size_node is calculated */
4364 get_type_size_node(type);
4365 ir_node *elems = type->array.size_node;
4366 ir_node *mem = get_store();
4367 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
4369 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
4370 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
4373 assert(entity->declaration.kind == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
4374 entity->variable.v.vla_base = addr;
4378 * Creates a Firm local variable from a declaration.
4380 static void create_local_variable(entity_t *entity)
4382 assert(entity->kind == ENTITY_VARIABLE);
4383 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4385 bool needs_entity = entity->variable.address_taken;
4386 type_t *type = skip_typeref(entity->declaration.type);
4388 /* is it a variable length array? */
4389 if (is_type_array(type) && !type->array.size_constant) {
4390 create_variable_length_array(entity);
4392 } else if (is_type_array(type) || is_type_compound(type)) {
4393 needs_entity = true;
4394 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4395 needs_entity = true;
4399 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
4400 create_variable_entity(entity,
4401 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
4404 entity->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
4405 entity->variable.v.value_number = next_value_number_function;
4406 set_irg_loc_description(current_ir_graph, next_value_number_function,
4408 ++next_value_number_function;
4412 static void create_local_static_variable(entity_t *entity)
4414 assert(entity->kind == ENTITY_VARIABLE);
4415 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4417 type_t *type = skip_typeref(entity->declaration.type);
4418 ir_type *const var_type = entity->variable.thread_local ?
4419 get_tls_type() : get_glob_type();
4420 ir_type *const irtype = get_ir_type(type);
4421 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
4423 size_t l = strlen(entity->base.symbol->string);
4424 char buf[l + sizeof(".%u")];
4425 snprintf(buf, sizeof(buf), "%s.%%u", entity->base.symbol->string);
4426 ident *const id = id_unique(buf);
4428 ir_entity *const irentity = new_d_entity(var_type, id, irtype, dbgi);
4430 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4431 set_entity_volatility(irentity, volatility_is_volatile);
4434 entity->declaration.kind = DECLARATION_KIND_GLOBAL_VARIABLE;
4435 entity->variable.v.entity = irentity;
4437 set_entity_ld_ident(irentity, id);
4438 add_entity_linkage(irentity, IR_LINKAGE_LOCAL);
4440 ir_graph *const old_current_ir_graph = current_ir_graph;
4441 current_ir_graph = get_const_code_irg();
4443 create_variable_initializer(entity);
4445 assert(current_ir_graph == get_const_code_irg());
4446 current_ir_graph = old_current_ir_graph;
4451 static void return_statement_to_firm(return_statement_t *statement)
4453 if (get_cur_block() == NULL)
4456 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4457 type_t *type = current_function_entity->declaration.type;
4458 ir_type *func_irtype = get_ir_type(type);
4463 if (get_method_n_ress(func_irtype) > 0) {
4464 ir_type *res_type = get_method_res_type(func_irtype, 0);
4466 if (statement->value != NULL) {
4467 ir_node *node = expression_to_firm(statement->value);
4468 if (!is_compound_type(res_type)) {
4469 type_t *type = statement->value->base.type;
4470 ir_mode *mode = get_ir_mode_storage(type);
4471 node = create_conv(dbgi, node, mode);
4472 node = do_strict_conv(dbgi, node);
4477 if (is_compound_type(res_type)) {
4480 mode = get_type_mode(res_type);
4482 in[0] = new_Unknown(mode);
4486 /* build return_value for its side effects */
4487 if (statement->value != NULL) {
4488 expression_to_firm(statement->value);
4493 ir_node *store = get_store();
4494 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
4496 ir_node *end_block = get_irg_end_block(current_ir_graph);
4497 add_immBlock_pred(end_block, ret);
4499 set_cur_block(NULL);
4502 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
4504 if (get_cur_block() == NULL)
4507 return expression_to_firm(statement->expression);
4510 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
4512 entity_t *entity = compound->scope.entities;
4513 for ( ; entity != NULL; entity = entity->base.next) {
4514 if (!is_declaration(entity))
4517 create_local_declaration(entity);
4520 ir_node *result = NULL;
4521 statement_t *statement = compound->statements;
4522 for ( ; statement != NULL; statement = statement->base.next) {
4523 if (statement->base.next == NULL
4524 && statement->kind == STATEMENT_EXPRESSION) {
4525 result = expression_statement_to_firm(
4526 &statement->expression);
4529 statement_to_firm(statement);
4535 static void create_global_variable(entity_t *entity)
4537 ir_linkage linkage = 0;
4538 assert(entity->kind == ENTITY_VARIABLE);
4540 switch ((storage_class_tag_t)entity->declaration.storage_class) {
4541 case STORAGE_CLASS_STATIC: linkage |= IR_LINKAGE_LOCAL; break;
4542 case STORAGE_CLASS_EXTERN: linkage |= IR_LINKAGE_EXTERN; break;
4543 case STORAGE_CLASS_TYPEDEF:
4544 case STORAGE_CLASS_AUTO:
4545 case STORAGE_CLASS_REGISTER:
4546 case STORAGE_CLASS_NONE: break;
4549 ir_type *var_type = entity->variable.thread_local ?
4550 get_tls_type() : get_glob_type();
4551 create_variable_entity(entity, DECLARATION_KIND_GLOBAL_VARIABLE, var_type);
4552 add_entity_linkage(entity->variable.v.entity, linkage);
4555 static void create_local_declaration(entity_t *entity)
4557 assert(is_declaration(entity));
4559 /* construct type */
4560 (void) get_ir_type(entity->declaration.type);
4561 if (entity->base.symbol == NULL) {
4565 switch ((storage_class_tag_t) entity->declaration.storage_class) {
4566 case STORAGE_CLASS_STATIC:
4567 if (entity->kind == ENTITY_FUNCTION) {
4568 (void)get_function_entity(entity, NULL);
4570 create_local_static_variable(entity);
4573 case STORAGE_CLASS_EXTERN:
4574 if (entity->kind == ENTITY_FUNCTION) {
4575 assert(entity->function.statement == NULL);
4576 (void)get_function_entity(entity, NULL);
4578 create_global_variable(entity);
4579 create_variable_initializer(entity);
4582 case STORAGE_CLASS_NONE:
4583 case STORAGE_CLASS_AUTO:
4584 case STORAGE_CLASS_REGISTER:
4585 if (entity->kind == ENTITY_FUNCTION) {
4586 if (entity->function.statement != NULL) {
4587 ir_type *owner = get_irg_frame_type(current_ir_graph);
4588 (void)get_function_entity(entity, owner);
4589 entity->declaration.kind = DECLARATION_KIND_INNER_FUNCTION;
4590 enqueue_inner_function(entity);
4592 (void)get_function_entity(entity, NULL);
4595 create_local_variable(entity);
4598 case STORAGE_CLASS_TYPEDEF:
4601 panic("invalid storage class found");
4604 static void initialize_local_declaration(entity_t *entity)
4606 if (entity->base.symbol == NULL)
4609 // no need to emit code in dead blocks
4610 if (entity->declaration.storage_class != STORAGE_CLASS_STATIC
4611 && get_cur_block() == NULL)
4614 switch ((declaration_kind_t) entity->declaration.kind) {
4615 case DECLARATION_KIND_LOCAL_VARIABLE:
4616 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4617 create_variable_initializer(entity);
4620 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4621 allocate_variable_length_array(entity);
4624 case DECLARATION_KIND_COMPOUND_MEMBER:
4625 case DECLARATION_KIND_GLOBAL_VARIABLE:
4626 case DECLARATION_KIND_FUNCTION:
4627 case DECLARATION_KIND_INNER_FUNCTION:
4630 case DECLARATION_KIND_PARAMETER:
4631 case DECLARATION_KIND_PARAMETER_ENTITY:
4632 panic("can't initialize parameters");
4634 case DECLARATION_KIND_UNKNOWN:
4635 panic("can't initialize unknown declaration");
4637 panic("invalid declaration kind");
4640 static void declaration_statement_to_firm(declaration_statement_t *statement)
4642 entity_t *entity = statement->declarations_begin;
4646 entity_t *const last = statement->declarations_end;
4647 for ( ;; entity = entity->base.next) {
4648 if (is_declaration(entity)) {
4649 initialize_local_declaration(entity);
4650 } else if (entity->kind == ENTITY_TYPEDEF) {
4651 /* §6.7.7:3 Any array size expressions associated with variable length
4652 * array declarators are evaluated each time the declaration of the
4653 * typedef name is reached in the order of execution. */
4654 type_t *const type = skip_typeref(entity->typedefe.type);
4655 if (is_type_array(type) && type->array.is_vla)
4656 get_vla_size(&type->array);
4663 static void if_statement_to_firm(if_statement_t *statement)
4665 ir_node *cur_block = get_cur_block();
4667 ir_node *fallthrough_block = NULL;
4669 /* the true (blocks) */
4670 ir_node *true_block = NULL;
4671 if (statement->true_statement != NULL) {
4672 true_block = new_immBlock();
4673 set_cur_block(true_block);
4674 statement_to_firm(statement->true_statement);
4675 if (get_cur_block() != NULL) {
4676 ir_node *jmp = new_Jmp();
4677 if (fallthrough_block == NULL)
4678 fallthrough_block = new_immBlock();
4679 add_immBlock_pred(fallthrough_block, jmp);
4683 /* the false (blocks) */
4684 ir_node *false_block = NULL;
4685 if (statement->false_statement != NULL) {
4686 false_block = new_immBlock();
4687 set_cur_block(false_block);
4689 statement_to_firm(statement->false_statement);
4690 if (get_cur_block() != NULL) {
4691 ir_node *jmp = new_Jmp();
4692 if (fallthrough_block == NULL)
4693 fallthrough_block = new_immBlock();
4694 add_immBlock_pred(fallthrough_block, jmp);
4698 /* create the condition */
4699 if (cur_block != NULL) {
4700 if (true_block == NULL || false_block == NULL) {
4701 if (fallthrough_block == NULL)
4702 fallthrough_block = new_immBlock();
4703 if (true_block == NULL)
4704 true_block = fallthrough_block;
4705 if (false_block == NULL)
4706 false_block = fallthrough_block;
4709 set_cur_block(cur_block);
4710 create_condition_evaluation(statement->condition, true_block,
4714 mature_immBlock(true_block);
4715 if (false_block != fallthrough_block && false_block != NULL) {
4716 mature_immBlock(false_block);
4718 if (fallthrough_block != NULL) {
4719 mature_immBlock(fallthrough_block);
4722 set_cur_block(fallthrough_block);
4725 static void while_statement_to_firm(while_statement_t *statement)
4727 ir_node *jmp = NULL;
4728 if (get_cur_block() != NULL) {
4732 /* create the header block */
4733 ir_node *header_block = new_immBlock();
4735 add_immBlock_pred(header_block, jmp);
4739 ir_node *old_continue_label = continue_label;
4740 ir_node *old_break_label = break_label;
4741 continue_label = header_block;
4744 ir_node *body_block = new_immBlock();
4745 set_cur_block(body_block);
4746 statement_to_firm(statement->body);
4747 ir_node *false_block = break_label;
4749 assert(continue_label == header_block);
4750 continue_label = old_continue_label;
4751 break_label = old_break_label;
4753 if (get_cur_block() != NULL) {
4755 add_immBlock_pred(header_block, jmp);
4758 /* shortcut for while(true) */
4759 if (is_constant_expression(statement->condition)
4760 && fold_constant_to_bool(statement->condition) != 0) {
4761 set_cur_block(header_block);
4762 ir_node *header_jmp = new_Jmp();
4763 add_immBlock_pred(body_block, header_jmp);
4765 keep_alive(body_block);
4766 keep_all_memory(body_block);
4767 set_cur_block(body_block);
4769 if (false_block == NULL) {
4770 false_block = new_immBlock();
4773 /* create the condition */
4774 set_cur_block(header_block);
4776 create_condition_evaluation(statement->condition, body_block,
4780 mature_immBlock(body_block);
4781 mature_immBlock(header_block);
4782 if (false_block != NULL) {
4783 mature_immBlock(false_block);
4786 set_cur_block(false_block);
4789 static void do_while_statement_to_firm(do_while_statement_t *statement)
4791 ir_node *jmp = NULL;
4792 if (get_cur_block() != NULL) {
4796 /* create the header block */
4797 ir_node *header_block = new_immBlock();
4800 ir_node *body_block = new_immBlock();
4802 add_immBlock_pred(body_block, jmp);
4805 ir_node *old_continue_label = continue_label;
4806 ir_node *old_break_label = break_label;
4807 continue_label = header_block;
4810 set_cur_block(body_block);
4811 statement_to_firm(statement->body);
4812 ir_node *false_block = break_label;
4814 assert(continue_label == header_block);
4815 continue_label = old_continue_label;
4816 break_label = old_break_label;
4818 if (get_cur_block() != NULL) {
4819 ir_node *body_jmp = new_Jmp();
4820 add_immBlock_pred(header_block, body_jmp);
4821 mature_immBlock(header_block);
4824 if (false_block == NULL) {
4825 false_block = new_immBlock();
4828 /* create the condition */
4829 set_cur_block(header_block);
4831 create_condition_evaluation(statement->condition, body_block, false_block);
4832 mature_immBlock(body_block);
4833 mature_immBlock(header_block);
4834 mature_immBlock(false_block);
4836 set_cur_block(false_block);
4839 static void for_statement_to_firm(for_statement_t *statement)
4841 ir_node *jmp = NULL;
4843 /* create declarations */
4844 entity_t *entity = statement->scope.entities;
4845 for ( ; entity != NULL; entity = entity->base.next) {
4846 if (!is_declaration(entity))
4849 create_local_declaration(entity);
4852 if (get_cur_block() != NULL) {
4853 entity = statement->scope.entities;
4854 for ( ; entity != NULL; entity = entity->base.next) {
4855 if (!is_declaration(entity))
4858 initialize_local_declaration(entity);
4861 if (statement->initialisation != NULL) {
4862 expression_to_firm(statement->initialisation);
4869 /* create the step block */
4870 ir_node *const step_block = new_immBlock();
4871 set_cur_block(step_block);
4872 if (statement->step != NULL) {
4873 expression_to_firm(statement->step);
4875 ir_node *const step_jmp = new_Jmp();
4877 /* create the header block */
4878 ir_node *const header_block = new_immBlock();
4879 set_cur_block(header_block);
4881 add_immBlock_pred(header_block, jmp);
4883 add_immBlock_pred(header_block, step_jmp);
4885 /* the false block */
4886 ir_node *const false_block = new_immBlock();
4889 ir_node *body_block;
4890 if (statement->body != NULL) {
4891 ir_node *const old_continue_label = continue_label;
4892 ir_node *const old_break_label = break_label;
4893 continue_label = step_block;
4894 break_label = false_block;
4896 body_block = new_immBlock();
4897 set_cur_block(body_block);
4898 statement_to_firm(statement->body);
4900 assert(continue_label == step_block);
4901 assert(break_label == false_block);
4902 continue_label = old_continue_label;
4903 break_label = old_break_label;
4905 if (get_cur_block() != NULL) {
4907 add_immBlock_pred(step_block, jmp);
4910 body_block = step_block;
4913 /* create the condition */
4914 set_cur_block(header_block);
4915 if (statement->condition != NULL) {
4916 create_condition_evaluation(statement->condition, body_block,
4919 keep_alive(header_block);
4920 keep_all_memory(header_block);
4922 add_immBlock_pred(body_block, jmp);
4925 mature_immBlock(body_block);
4926 mature_immBlock(false_block);
4927 mature_immBlock(step_block);
4928 mature_immBlock(header_block);
4929 mature_immBlock(false_block);
4931 set_cur_block(false_block);
4934 static void create_jump_statement(const statement_t *statement,
4935 ir_node *target_block)
4937 if (get_cur_block() == NULL)
4940 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4941 ir_node *jump = new_d_Jmp(dbgi);
4942 add_immBlock_pred(target_block, jump);
4944 set_cur_block(NULL);
4947 static ir_node *get_break_label(void)
4949 if (break_label == NULL) {
4950 break_label = new_immBlock();
4955 static void switch_statement_to_firm(switch_statement_t *statement)
4957 ir_node *first_block = NULL;
4958 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4959 ir_node *cond = NULL;
4961 if (get_cur_block() != NULL) {
4962 ir_node *expression = expression_to_firm(statement->expression);
4963 cond = new_d_Cond(dbgi, expression);
4964 first_block = get_cur_block();
4967 set_cur_block(NULL);
4969 ir_node *const old_switch_cond = current_switch_cond;
4970 ir_node *const old_break_label = break_label;
4971 const bool old_saw_default_label = saw_default_label;
4972 saw_default_label = false;
4973 current_switch_cond = cond;
4975 switch_statement_t *const old_switch = current_switch;
4976 current_switch = statement;
4978 /* determine a free number for the default label */
4979 unsigned long num_cases = 0;
4981 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4982 if (l->expression == NULL) {
4986 if (l->last_case >= l->first_case)
4987 num_cases += l->last_case - l->first_case + 1;
4988 if (l->last_case > def_nr)
4989 def_nr = l->last_case;
4992 if (def_nr == INT_MAX) {
4993 /* Bad: an overflow will occur, we cannot be sure that the
4994 * maximum + 1 is a free number. Scan the values a second
4995 * time to find a free number.
4997 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
4999 memset(bits, 0, (num_cases + 7) >> 3);
5000 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
5001 if (l->expression == NULL) {
5005 unsigned long start = l->first_case > 0 ? (unsigned long)l->first_case : 0;
5006 if (start < num_cases && l->last_case >= 0) {
5007 unsigned long end = (unsigned long)l->last_case < num_cases ?
5008 (unsigned long)l->last_case : num_cases - 1;
5009 for (unsigned long cns = start; cns <= end; ++cns) {
5010 bits[cns >> 3] |= (1 << (cns & 7));
5014 /* We look at the first num_cases constants:
5015 * Either they are dense, so we took the last (num_cases)
5016 * one, or they are not dense, so we will find one free
5020 for (i = 0; i < num_cases; ++i)
5021 if ((bits[i >> 3] & (1 << (i & 7))) == 0)
5029 statement->default_proj_nr = def_nr;
5031 if (statement->body != NULL) {
5032 statement_to_firm(statement->body);
5035 if (get_cur_block() != NULL) {
5036 ir_node *jmp = new_Jmp();
5037 add_immBlock_pred(get_break_label(), jmp);
5040 if (!saw_default_label && first_block != NULL) {
5041 set_cur_block(first_block);
5042 ir_node *const proj = new_d_defaultProj(dbgi, cond,
5043 statement->default_proj_nr);
5044 add_immBlock_pred(get_break_label(), proj);
5047 if (break_label != NULL) {
5048 mature_immBlock(break_label);
5050 set_cur_block(break_label);
5052 assert(current_switch_cond == cond);
5053 current_switch = old_switch;
5054 current_switch_cond = old_switch_cond;
5055 break_label = old_break_label;
5056 saw_default_label = old_saw_default_label;
5059 static void case_label_to_firm(const case_label_statement_t *statement)
5061 if (statement->is_empty_range)
5064 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5066 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
5069 ir_node *block = new_immBlock();
5071 if (current_switch_cond != NULL) {
5072 set_cur_block(get_nodes_block(current_switch_cond));
5073 if (statement->expression != NULL) {
5074 long pn = statement->first_case;
5075 long end_pn = statement->last_case;
5076 assert(pn <= end_pn);
5077 /* create jumps for all cases in the given range */
5079 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
5080 add_immBlock_pred(block, proj);
5081 } while (pn++ < end_pn);
5083 saw_default_label = true;
5084 proj = new_d_defaultProj(dbgi, current_switch_cond,
5085 current_switch->default_proj_nr);
5087 add_immBlock_pred(block, proj);
5091 if (fallthrough != NULL) {
5092 add_immBlock_pred(block, fallthrough);
5094 mature_immBlock(block);
5095 set_cur_block(block);
5097 if (statement->statement != NULL) {
5098 statement_to_firm(statement->statement);
5102 static void label_to_firm(const label_statement_t *statement)
5104 ir_node *block = get_label_block(statement->label);
5106 if (get_cur_block() != NULL) {
5107 ir_node *jmp = new_Jmp();
5108 add_immBlock_pred(block, jmp);
5111 set_cur_block(block);
5113 keep_all_memory(block);
5115 if (statement->statement != NULL) {
5116 statement_to_firm(statement->statement);
5120 static void goto_to_firm(const goto_statement_t *statement)
5122 if (get_cur_block() == NULL)
5125 if (statement->expression) {
5126 ir_node *irn = expression_to_firm(statement->expression);
5127 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5128 ir_node *ijmp = new_d_IJmp(dbgi, irn);
5130 set_irn_link(ijmp, ijmp_list);
5133 ir_node *block = get_label_block(statement->label);
5134 ir_node *jmp = new_Jmp();
5135 add_immBlock_pred(block, jmp);
5137 set_cur_block(NULL);
5140 static void asm_statement_to_firm(const asm_statement_t *statement)
5142 bool needs_memory = false;
5144 if (statement->is_volatile) {
5145 needs_memory = true;
5148 size_t n_clobbers = 0;
5149 asm_clobber_t *clobber = statement->clobbers;
5150 for ( ; clobber != NULL; clobber = clobber->next) {
5151 const char *clobber_str = clobber->clobber.begin;
5153 if (!be_is_valid_clobber(clobber_str)) {
5154 errorf(&statement->base.source_position,
5155 "invalid clobber '%s' specified", clobber->clobber);
5159 if (strcmp(clobber_str, "memory") == 0) {
5160 needs_memory = true;
5164 ident *id = new_id_from_str(clobber_str);
5165 obstack_ptr_grow(&asm_obst, id);
5168 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
5169 ident **clobbers = NULL;
5170 if (n_clobbers > 0) {
5171 clobbers = obstack_finish(&asm_obst);
5174 size_t n_inputs = 0;
5175 asm_argument_t *argument = statement->inputs;
5176 for ( ; argument != NULL; argument = argument->next)
5178 size_t n_outputs = 0;
5179 argument = statement->outputs;
5180 for ( ; argument != NULL; argument = argument->next)
5183 unsigned next_pos = 0;
5185 ir_node *ins[n_inputs + n_outputs + 1];
5188 ir_asm_constraint tmp_in_constraints[n_outputs];
5190 const expression_t *out_exprs[n_outputs];
5191 ir_node *out_addrs[n_outputs];
5192 size_t out_size = 0;
5194 argument = statement->outputs;
5195 for ( ; argument != NULL; argument = argument->next) {
5196 const char *constraints = argument->constraints.begin;
5197 asm_constraint_flags_t asm_flags
5198 = be_parse_asm_constraints(constraints);
5200 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5201 warningf(&statement->base.source_position,
5202 "some constraints in '%s' are not supported", constraints);
5204 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5205 errorf(&statement->base.source_position,
5206 "some constraints in '%s' are invalid", constraints);
5209 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
5210 errorf(&statement->base.source_position,
5211 "no write flag specified for output constraints '%s'",
5216 unsigned pos = next_pos++;
5217 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5218 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5219 expression_t *expr = argument->expression;
5220 ir_node *addr = expression_to_addr(expr);
5221 /* in+output, construct an artifical same_as constraint on the
5223 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
5225 ir_node *value = get_value_from_lvalue(expr, addr);
5227 snprintf(buf, sizeof(buf), "%u", (unsigned) out_size);
5229 ir_asm_constraint constraint;
5230 constraint.pos = pos;
5231 constraint.constraint = new_id_from_str(buf);
5232 constraint.mode = get_ir_mode_storage(expr->base.type);
5233 tmp_in_constraints[in_size] = constraint;
5234 ins[in_size] = value;
5239 out_exprs[out_size] = expr;
5240 out_addrs[out_size] = addr;
5242 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5243 /* pure memory ops need no input (but we have to make sure we
5244 * attach to the memory) */
5245 assert(! (asm_flags &
5246 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5247 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5248 needs_memory = true;
5250 /* we need to attach the address to the inputs */
5251 expression_t *expr = argument->expression;
5253 ir_asm_constraint constraint;
5254 constraint.pos = pos;
5255 constraint.constraint = new_id_from_str(constraints);
5256 constraint.mode = NULL;
5257 tmp_in_constraints[in_size] = constraint;
5259 ins[in_size] = expression_to_addr(expr);
5263 errorf(&statement->base.source_position,
5264 "only modifiers but no place set in constraints '%s'",
5269 ir_asm_constraint constraint;
5270 constraint.pos = pos;
5271 constraint.constraint = new_id_from_str(constraints);
5272 constraint.mode = get_ir_mode_storage(argument->expression->base.type);
5274 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5276 assert(obstack_object_size(&asm_obst)
5277 == out_size * sizeof(ir_asm_constraint));
5278 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
5281 obstack_grow(&asm_obst, tmp_in_constraints,
5282 in_size * sizeof(tmp_in_constraints[0]));
5283 /* find and count input and output arguments */
5284 argument = statement->inputs;
5285 for ( ; argument != NULL; argument = argument->next) {
5286 const char *constraints = argument->constraints.begin;
5287 asm_constraint_flags_t asm_flags
5288 = be_parse_asm_constraints(constraints);
5290 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5291 errorf(&statement->base.source_position,
5292 "some constraints in '%s' are not supported", constraints);
5295 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5296 errorf(&statement->base.source_position,
5297 "some constraints in '%s' are invalid", constraints);
5300 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
5301 errorf(&statement->base.source_position,
5302 "write flag specified for input constraints '%s'",
5308 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5309 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5310 /* we can treat this as "normal" input */
5311 input = expression_to_firm(argument->expression);
5312 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5313 /* pure memory ops need no input (but we have to make sure we
5314 * attach to the memory) */
5315 assert(! (asm_flags &
5316 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5317 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5318 needs_memory = true;
5319 input = expression_to_addr(argument->expression);
5321 errorf(&statement->base.source_position,
5322 "only modifiers but no place set in constraints '%s'",
5327 ir_asm_constraint constraint;
5328 constraint.pos = next_pos++;
5329 constraint.constraint = new_id_from_str(constraints);
5330 constraint.mode = get_irn_mode(input);
5332 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5333 ins[in_size++] = input;
5337 ir_asm_constraint constraint;
5338 constraint.pos = next_pos++;
5339 constraint.constraint = new_id_from_str("");
5340 constraint.mode = mode_M;
5342 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5343 ins[in_size++] = get_store();
5346 assert(obstack_object_size(&asm_obst)
5347 == in_size * sizeof(ir_asm_constraint));
5348 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
5350 /* create asm node */
5351 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5353 ident *asm_text = new_id_from_str(statement->asm_text.begin);
5355 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
5356 out_size, output_constraints,
5357 n_clobbers, clobbers, asm_text);
5359 if (statement->is_volatile) {
5360 set_irn_pinned(node, op_pin_state_pinned);
5362 set_irn_pinned(node, op_pin_state_floats);
5365 /* create output projs & connect them */
5367 ir_node *projm = new_Proj(node, mode_M, out_size+1);
5372 for (i = 0; i < out_size; ++i) {
5373 const expression_t *out_expr = out_exprs[i];
5375 ir_mode *mode = get_ir_mode_storage(out_expr->base.type);
5376 ir_node *proj = new_Proj(node, mode, pn);
5377 ir_node *addr = out_addrs[i];
5379 set_value_for_expression_addr(out_expr, proj, addr);
5383 static void ms_try_statement_to_firm(ms_try_statement_t *statement)
5385 statement_to_firm(statement->try_statement);
5386 warningf(&statement->base.source_position, "structured exception handling ignored");
5389 static void leave_statement_to_firm(leave_statement_t *statement)
5391 errorf(&statement->base.source_position, "__leave not supported yet");
5395 * Transform a statement.
5397 static void statement_to_firm(statement_t *statement)
5400 assert(!statement->base.transformed);
5401 statement->base.transformed = true;
5404 switch (statement->kind) {
5405 case STATEMENT_INVALID:
5406 panic("invalid statement found");
5407 case STATEMENT_EMPTY:
5410 case STATEMENT_COMPOUND:
5411 compound_statement_to_firm(&statement->compound);
5413 case STATEMENT_RETURN:
5414 return_statement_to_firm(&statement->returns);
5416 case STATEMENT_EXPRESSION:
5417 expression_statement_to_firm(&statement->expression);
5420 if_statement_to_firm(&statement->ifs);
5422 case STATEMENT_WHILE:
5423 while_statement_to_firm(&statement->whiles);
5425 case STATEMENT_DO_WHILE:
5426 do_while_statement_to_firm(&statement->do_while);
5428 case STATEMENT_DECLARATION:
5429 declaration_statement_to_firm(&statement->declaration);
5431 case STATEMENT_BREAK:
5432 create_jump_statement(statement, get_break_label());
5434 case STATEMENT_CONTINUE:
5435 create_jump_statement(statement, continue_label);
5437 case STATEMENT_SWITCH:
5438 switch_statement_to_firm(&statement->switchs);
5440 case STATEMENT_CASE_LABEL:
5441 case_label_to_firm(&statement->case_label);
5444 for_statement_to_firm(&statement->fors);
5446 case STATEMENT_LABEL:
5447 label_to_firm(&statement->label);
5449 case STATEMENT_GOTO:
5450 goto_to_firm(&statement->gotos);
5453 asm_statement_to_firm(&statement->asms);
5455 case STATEMENT_MS_TRY:
5456 ms_try_statement_to_firm(&statement->ms_try);
5458 case STATEMENT_LEAVE:
5459 leave_statement_to_firm(&statement->leave);
5462 panic("statement not implemented");
5465 static int count_local_variables(const entity_t *entity,
5466 const entity_t *const last)
5469 entity_t const *const end = last != NULL ? last->base.next : NULL;
5470 for (; entity != end; entity = entity->base.next) {
5474 if (entity->kind == ENTITY_VARIABLE) {
5475 type = skip_typeref(entity->declaration.type);
5476 address_taken = entity->variable.address_taken;
5477 } else if (entity->kind == ENTITY_PARAMETER) {
5478 type = skip_typeref(entity->declaration.type);
5479 address_taken = entity->parameter.address_taken;
5484 if (!address_taken && is_type_scalar(type))
5490 static void count_local_variables_in_stmt(statement_t *stmt, void *const env)
5492 int *const count = env;
5494 switch (stmt->kind) {
5495 case STATEMENT_DECLARATION: {
5496 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5497 *count += count_local_variables(decl_stmt->declarations_begin,
5498 decl_stmt->declarations_end);
5503 *count += count_local_variables(stmt->fors.scope.entities, NULL);
5512 * Return the number of local (alias free) variables used by a function.
5514 static int get_function_n_local_vars(entity_t *entity)
5516 const function_t *function = &entity->function;
5519 /* count parameters */
5520 count += count_local_variables(function->parameters.entities, NULL);
5522 /* count local variables declared in body */
5523 walk_statements(function->statement, count_local_variables_in_stmt, &count);
5528 * Build Firm code for the parameters of a function.
5530 static void initialize_function_parameters(entity_t *entity)
5532 assert(entity->kind == ENTITY_FUNCTION);
5533 ir_graph *irg = current_ir_graph;
5534 ir_node *args = get_irg_args(irg);
5535 ir_node *start_block = get_irg_start_block(irg);
5536 ir_type *function_irtype = get_ir_type(entity->declaration.type);
5537 int first_param_nr = 0;
5539 if (entity->function.need_closure) {
5540 /* add an extra parameter for the static link */
5541 entity->function.static_link = new_r_Proj(start_block, args, mode_P_data, 0);
5546 entity_t *parameter = entity->function.parameters.entities;
5547 for ( ; parameter != NULL; parameter = parameter->base.next, ++n) {
5548 if (parameter->kind != ENTITY_PARAMETER)
5551 assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN);
5552 type_t *type = skip_typeref(parameter->declaration.type);
5554 bool needs_entity = parameter->parameter.address_taken;
5555 assert(!is_type_array(type));
5556 if (is_type_compound(type)) {
5557 needs_entity = true;
5561 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5562 ident *id = new_id_from_str(parameter->base.symbol->string);
5563 set_entity_ident(entity, id);
5565 parameter->declaration.kind
5566 = DECLARATION_KIND_PARAMETER_ENTITY;
5567 parameter->parameter.v.entity = entity;
5571 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5572 ir_mode *param_mode = get_type_mode(param_irtype);
5574 long pn = n + first_param_nr;
5575 ir_node *value = new_r_Proj(start_block, args, param_mode, pn);
5577 ir_mode *mode = get_ir_mode_storage(type);
5578 value = create_conv(NULL, value, mode);
5579 value = do_strict_conv(NULL, value);
5581 parameter->declaration.kind = DECLARATION_KIND_PARAMETER;
5582 parameter->parameter.v.value_number = next_value_number_function;
5583 set_irg_loc_description(current_ir_graph, next_value_number_function,
5585 ++next_value_number_function;
5587 set_value(parameter->parameter.v.value_number, value);
5592 * Handle additional decl modifiers for IR-graphs
5594 * @param irg the IR-graph
5595 * @param dec_modifiers additional modifiers
5597 static void handle_decl_modifier_irg(ir_graph_ptr irg,
5598 decl_modifiers_t decl_modifiers)
5600 if (decl_modifiers & DM_RETURNS_TWICE) {
5601 /* TRUE if the declaration includes __attribute__((returns_twice)) */
5602 set_irg_additional_property(irg, mtp_property_returns_twice);
5604 if (decl_modifiers & DM_NORETURN) {
5605 /* TRUE if the declaration includes the Microsoft
5606 __declspec(noreturn) specifier. */
5607 set_irg_additional_property(irg, mtp_property_noreturn);
5609 if (decl_modifiers & DM_NOTHROW) {
5610 /* TRUE if the declaration includes the Microsoft
5611 __declspec(nothrow) specifier. */
5612 set_irg_additional_property(irg, mtp_property_nothrow);
5614 if (decl_modifiers & DM_NAKED) {
5615 /* TRUE if the declaration includes the Microsoft
5616 __declspec(naked) specifier. */
5617 set_irg_additional_property(irg, mtp_property_naked);
5619 if (decl_modifiers & DM_FORCEINLINE) {
5620 /* TRUE if the declaration includes the
5621 Microsoft __forceinline specifier. */
5622 set_irg_inline_property(irg, irg_inline_forced);
5624 if (decl_modifiers & DM_NOINLINE) {
5625 /* TRUE if the declaration includes the Microsoft
5626 __declspec(noinline) specifier. */
5627 set_irg_inline_property(irg, irg_inline_forbidden);
5631 static void add_function_pointer(ir_type *segment, ir_entity *method,
5632 const char *unique_template)
5634 ir_type *method_type = get_entity_type(method);
5635 ir_type *ptr_type = new_type_pointer(method_type);
5637 ident *ide = id_unique(unique_template);
5638 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5639 ir_graph *irg = get_const_code_irg();
5640 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5643 set_entity_compiler_generated(ptr, 1);
5644 add_entity_linkage(ptr, IR_LINKAGE_LOCAL | IR_LINKAGE_CONSTANT);
5645 set_atomic_ent_value(ptr, val);
5649 * Generate possible IJmp branches to a given label block.
5651 static void gen_ijmp_branches(ir_node *block)
5654 for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) {
5655 add_immBlock_pred(block, ijmp);
5660 * Create code for a function and all inner functions.
5662 * @param entity the function entity
5664 static void create_function(entity_t *entity)
5666 assert(entity->kind == ENTITY_FUNCTION);
5667 ir_entity *function_entity = get_function_entity(entity, current_outer_frame);
5669 if (entity->function.statement == NULL)
5672 if (is_main(entity) && firm_opt.os_support == OS_SUPPORT_MINGW) {
5673 prepare_main_collect2(entity);
5676 inner_functions = NULL;
5677 current_trampolines = NULL;
5679 if (entity->declaration.modifiers & DM_CONSTRUCTOR) {
5680 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5681 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5683 if (entity->declaration.modifiers & DM_DESTRUCTOR) {
5684 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5685 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5688 current_function_entity = entity;
5689 current_function_name = NULL;
5690 current_funcsig = NULL;
5692 assert(all_labels == NULL);
5693 all_labels = NEW_ARR_F(label_t *, 0);
5696 int n_local_vars = get_function_n_local_vars(entity);
5697 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5699 ir_graph *old_current_function = current_function;
5700 current_function = irg;
5702 set_irg_fp_model(irg, firm_opt.fp_model);
5703 tarval_enable_fp_ops(1);
5704 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5706 ir_node *first_block = get_cur_block();
5708 /* set inline flags */
5709 if (entity->function.is_inline)
5710 set_irg_inline_property(irg, irg_inline_recomended);
5711 handle_decl_modifier_irg(irg, entity->declaration.modifiers);
5713 next_value_number_function = 0;
5714 initialize_function_parameters(entity);
5715 current_static_link = entity->function.static_link;
5717 statement_to_firm(entity->function.statement);
5719 ir_node *end_block = get_irg_end_block(irg);
5721 /* do we have a return statement yet? */
5722 if (get_cur_block() != NULL) {
5723 type_t *type = skip_typeref(entity->declaration.type);
5724 assert(is_type_function(type));
5725 const function_type_t *func_type = &type->function;
5726 const type_t *return_type
5727 = skip_typeref(func_type->return_type);
5730 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5731 ret = new_Return(get_store(), 0, NULL);
5734 if (is_type_scalar(return_type)) {
5735 mode = get_ir_mode_storage(func_type->return_type);
5741 /* §5.1.2.2.3 main implicitly returns 0 */
5742 if (is_main(entity)) {
5743 in[0] = new_Const(get_mode_null(mode));
5745 in[0] = new_Unknown(mode);
5747 ret = new_Return(get_store(), 1, in);
5749 add_immBlock_pred(end_block, ret);
5752 bool has_computed_gotos = false;
5753 for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
5754 label_t *label = all_labels[i];
5755 if (label->address_taken) {
5756 gen_ijmp_branches(label->block);
5757 has_computed_gotos = true;
5759 mature_immBlock(label->block);
5761 if (has_computed_gotos) {
5762 /* if we have computed goto's in the function, we cannot inline it */
5763 if (get_irg_inline_property(irg) >= irg_inline_recomended) {
5764 warningf(&entity->base.source_position,
5765 "function '%Y' can never be inlined because it contains a computed goto",
5766 entity->base.symbol);
5768 set_irg_inline_property(irg, irg_inline_forbidden);
5771 DEL_ARR_F(all_labels);
5774 mature_immBlock(first_block);
5775 mature_immBlock(end_block);
5777 irg_finalize_cons(irg);
5779 /* finalize the frame type */
5780 ir_type *frame_type = get_irg_frame_type(irg);
5781 int n = get_compound_n_members(frame_type);
5784 for (int i = 0; i < n; ++i) {
5785 ir_entity *entity = get_compound_member(frame_type, i);
5786 ir_type *entity_type = get_entity_type(entity);
5788 int align = get_type_alignment_bytes(entity_type);
5789 if (align > align_all)
5793 misalign = offset % align;
5795 offset += align - misalign;
5799 set_entity_offset(entity, offset);
5800 offset += get_type_size_bytes(entity_type);
5802 set_type_size_bytes(frame_type, offset);
5803 set_type_alignment_bytes(frame_type, align_all);
5806 current_function = old_current_function;
5808 if (current_trampolines != NULL) {
5809 DEL_ARR_F(current_trampolines);
5810 current_trampolines = NULL;
5813 /* create inner functions if any */
5814 entity_t **inner = inner_functions;
5815 if (inner != NULL) {
5816 ir_type *rem_outer_frame = current_outer_frame;
5817 current_outer_frame = get_irg_frame_type(current_ir_graph);
5818 ir_type *rem_outer_value_type = current_outer_value_type;
5819 current_outer_value_type = get_irg_value_param_type(current_ir_graph);
5820 for (int i = ARR_LEN(inner) - 1; i >= 0; --i) {
5821 create_function(inner[i]);
5825 current_outer_value_type = rem_outer_value_type;
5826 current_outer_frame = rem_outer_frame;
5830 static void scope_to_firm(scope_t *scope)
5832 /* first pass: create declarations */
5833 entity_t *entity = scope->entities;
5834 for ( ; entity != NULL; entity = entity->base.next) {
5835 if (entity->base.symbol == NULL)
5838 if (entity->kind == ENTITY_FUNCTION) {
5839 if (entity->function.btk != bk_none) {
5840 /* builtins have no representation */
5843 (void)get_function_entity(entity, NULL);
5844 } else if (entity->kind == ENTITY_VARIABLE) {
5845 create_global_variable(entity);
5846 } else if (entity->kind == ENTITY_NAMESPACE) {
5847 scope_to_firm(&entity->namespacee.members);
5851 /* second pass: create code/initializers */
5852 entity = scope->entities;
5853 for ( ; entity != NULL; entity = entity->base.next) {
5854 if (entity->base.symbol == NULL)
5857 if (entity->kind == ENTITY_FUNCTION) {
5858 if (entity->function.btk != bk_none) {
5859 /* builtins have no representation */
5862 create_function(entity);
5863 } else if (entity->kind == ENTITY_VARIABLE) {
5864 assert(entity->declaration.kind
5865 == DECLARATION_KIND_GLOBAL_VARIABLE);
5866 current_ir_graph = get_const_code_irg();
5867 create_variable_initializer(entity);
5872 void init_ast2firm(void)
5874 obstack_init(&asm_obst);
5875 init_atomic_modes();
5877 ir_set_debug_retrieve(dbg_retrieve);
5878 ir_set_type_debug_retrieve(dbg_print_type_dbg_info);
5880 /* OS option must be set to the backend */
5881 switch (firm_opt.os_support) {
5882 case OS_SUPPORT_MINGW:
5883 create_ld_ident = create_name_win32;
5885 case OS_SUPPORT_LINUX:
5886 create_ld_ident = create_name_linux_elf;
5888 case OS_SUPPORT_MACHO:
5889 create_ld_ident = create_name_macho;
5892 panic("unexpected OS support mode");
5895 /* create idents for all known runtime functions */
5896 for (size_t i = 0; i < lengthof(rts_data); ++i) {
5897 rts_idents[i] = new_id_from_str(rts_data[i].name);
5900 entitymap_init(&entitymap);
5903 static void init_ir_types(void)
5905 static int ir_types_initialized = 0;
5906 if (ir_types_initialized)
5908 ir_types_initialized = 1;
5910 ir_type_int = get_ir_type(type_int);
5911 ir_type_char = get_ir_type(type_char);
5912 ir_type_const_char = get_ir_type(type_const_char);
5913 ir_type_wchar_t = get_ir_type(type_wchar_t);
5914 ir_type_void = get_ir_type(type_void);
5916 be_params = be_get_backend_param();
5917 mode_float_arithmetic = be_params->mode_float_arithmetic;
5919 stack_param_align = be_params->stack_param_align;
5922 void exit_ast2firm(void)
5924 entitymap_destroy(&entitymap);
5925 obstack_free(&asm_obst, NULL);
5928 static void global_asm_to_firm(statement_t *s)
5930 for (; s != NULL; s = s->base.next) {
5931 assert(s->kind == STATEMENT_ASM);
5933 char const *const text = s->asms.asm_text.begin;
5934 size_t size = s->asms.asm_text.size;
5936 /* skip the last \0 */
5937 if (text[size - 1] == '\0')
5940 ident *const id = new_id_from_chars(text, size);
5945 void translation_unit_to_firm(translation_unit_t *unit)
5947 /* just to be sure */
5948 continue_label = NULL;
5950 current_switch_cond = NULL;
5951 current_translation_unit = unit;
5955 scope_to_firm(&unit->scope);
5956 global_asm_to_firm(unit->global_asm);
5958 current_ir_graph = NULL;
5959 current_translation_unit = NULL;