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_visibility(irentity) == ir_visibility_external
962 set_entity_visibility(irentity, ir_visibility_default);
967 ir_type *ir_type_method;
968 if (entity->function.need_closure)
969 ir_type_method = create_method_type(&entity->declaration.type->function, true);
971 ir_type_method = get_ir_type(entity->declaration.type);
973 bool nested_function = false;
974 if (owner_type == NULL)
975 owner_type = get_glob_type();
977 nested_function = true;
979 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
980 irentity = new_d_entity(owner_type, id, ir_type_method, dbgi);
984 ld_id = id_unique("inner.%u");
986 ld_id = create_ld_ident(entity);
987 set_entity_ld_ident(irentity, ld_id);
989 handle_decl_modifiers(irentity, entity);
991 if (! nested_function) {
992 /* static inline => local
993 * extern inline => local
994 * inline without definition => local
995 * inline with definition => external_visible */
996 storage_class_tag_t const storage_class
997 = (storage_class_tag_t) entity->declaration.storage_class;
998 bool const is_inline = entity->function.is_inline;
1000 if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
1001 set_entity_visibility(irentity, ir_visibility_default);
1002 } else if (storage_class == STORAGE_CLASS_STATIC ||
1003 (is_inline && has_body)) {
1004 set_entity_visibility(irentity, ir_visibility_local);
1005 } else if (has_body) {
1006 set_entity_visibility(irentity, ir_visibility_default);
1008 set_entity_visibility(irentity, ir_visibility_external);
1011 /* nested functions are always local */
1012 set_entity_visibility(irentity, ir_visibility_local);
1015 /* We should check for file scope here, but as long as we compile C only
1016 this is not needed. */
1017 if (! firm_opt.freestanding && !has_body) {
1018 /* check for a known runtime function */
1019 for (size_t i = 0; i < lengthof(rts_data); ++i) {
1020 if (id != rts_idents[i])
1023 /* ignore those rts functions not necessary needed for current mode */
1024 if ((c_mode & rts_data[i].flags) == 0)
1026 assert(rts_entities[rts_data[i].id] == NULL);
1027 rts_entities[rts_data[i].id] = irentity;
1031 entitymap_insert(&entitymap, symbol, irentity);
1034 entity->declaration.kind = DECLARATION_KIND_FUNCTION;
1035 entity->function.irentity = irentity;
1040 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1042 ir_mode *value_mode = get_irn_mode(value);
1044 if (value_mode == dest_mode || is_Bad(value))
1047 if (dest_mode == mode_b) {
1048 ir_node *zero = new_Const(get_mode_null(value_mode));
1049 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1050 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1054 return new_d_Conv(dbgi, value, dest_mode);
1058 * Creates a Const node representing a constant.
1060 static ir_node *const_to_firm(const const_expression_t *cnst)
1062 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1063 type_t *type = skip_typeref(cnst->base.type);
1064 ir_mode *mode = get_ir_mode_storage(type);
1069 if (mode_is_float(mode)) {
1070 tv = new_tarval_from_double(cnst->v.float_value, mode);
1072 if (mode_is_signed(mode)) {
1073 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1075 len = snprintf(buf, sizeof(buf), "%llu",
1076 (unsigned long long) cnst->v.int_value);
1078 tv = new_tarval_from_str(buf, len, mode);
1081 ir_node *res = new_d_Const(dbgi, tv);
1082 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
1083 return create_conv(dbgi, res, mode_arith);
1087 * Creates a Const node representing a character constant.
1089 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1091 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1092 ir_mode *mode = get_ir_mode_arithmetic(cnst->base.type);
1095 size_t const size = cnst->v.character.size;
1096 if (size == 1 && char_is_signed) {
1097 v = (signed char)cnst->v.character.begin[0];
1100 for (size_t i = 0; i < size; ++i) {
1101 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1105 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1106 tarval *tv = new_tarval_from_str(buf, len, mode);
1108 return new_d_Const(dbgi, tv);
1112 * Creates a Const node representing a wide character constant.
1114 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1116 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1117 ir_mode *mode = get_ir_mode_arithmetic(cnst->base.type);
1119 long long int v = cnst->v.wide_character.begin[0];
1122 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1123 tarval *tv = new_tarval_from_str(buf, len, mode);
1125 return new_d_Const(dbgi, tv);
1129 * Allocate an area of size bytes aligned at alignment
1132 static ir_entity *alloc_trampoline(ir_type *frame_type, int size, unsigned alignment)
1134 static unsigned area_cnt = 0;
1137 ir_type *tp = new_type_array(1, ir_type_char);
1138 set_array_bounds_int(tp, 0, 0, size);
1139 set_type_alignment_bytes(tp, alignment);
1141 snprintf(buf, sizeof(buf), "trampolin%u", area_cnt++);
1142 ident *name = new_id_from_str(buf);
1143 ir_entity *area = new_entity(frame_type, name, tp);
1145 /* mark this entity as compiler generated */
1146 set_entity_compiler_generated(area, 1);
1151 * Return a node representing a trampoline region
1152 * for a given function entity.
1154 * @param dbgi debug info
1155 * @param entity the function entity
1157 static ir_node *get_trampoline_region(dbg_info *dbgi, ir_entity *entity)
1159 ir_entity *region = NULL;
1162 if (current_trampolines != NULL) {
1163 for (i = ARR_LEN(current_trampolines) - 1; i >= 0; --i) {
1164 if (current_trampolines[i].function == entity) {
1165 region = current_trampolines[i].region;
1170 current_trampolines = NEW_ARR_F(trampoline_region, 0);
1172 ir_graph *irg = current_ir_graph;
1173 if (region == NULL) {
1174 /* create a new region */
1175 ir_type *frame_tp = get_irg_frame_type(irg);
1176 trampoline_region reg;
1177 reg.function = entity;
1179 reg.region = alloc_trampoline(frame_tp,
1180 be_params->trampoline_size,
1181 be_params->trampoline_align);
1182 ARR_APP1(trampoline_region, current_trampolines, reg);
1183 region = reg.region;
1185 return new_d_simpleSel(dbgi, get_irg_no_mem(irg), get_irg_frame(irg),
1191 * Creates a SymConst for a given entity.
1193 * @param dbgi debug info
1194 * @param mode the (reference) mode for the SymConst
1195 * @param entity the entity
1197 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1200 assert(entity != NULL);
1201 union symconst_symbol sym;
1202 sym.entity_p = entity;
1203 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1207 * Creates a trampoline for a function represented by an entity.
1209 * @param dbgi debug info
1210 * @param mode the (reference) mode for the function address
1211 * @param entity the function entity
1213 static ir_node *create_trampoline(dbg_info *dbgi, ir_mode *mode,
1216 assert(entity != NULL);
1218 in[0] = get_trampoline_region(dbgi, entity);
1219 in[1] = create_symconst(dbgi, mode, entity);
1220 in[2] = get_irg_frame(current_ir_graph);
1222 ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_inner_trampoline, get_unknown_type());
1223 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1224 return new_Proj(irn, mode, pn_Builtin_1_result);
1228 * Creates a SymConst node representing a string constant.
1230 * @param src_pos the source position of the string constant
1231 * @param id_prefix a prefix for the name of the generated string constant
1232 * @param value the value of the string constant
1234 static ir_node *string_to_firm(const source_position_t *const src_pos,
1235 const char *const id_prefix,
1236 const string_t *const value)
1238 ir_type *const global_type = get_glob_type();
1239 dbg_info *const dbgi = get_dbg_info(src_pos);
1240 ir_type *const type = new_type_array(1, ir_type_const_char);
1242 ident *const id = id_unique(id_prefix);
1243 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1244 set_entity_ld_ident(entity, id);
1245 set_entity_visibility(entity, ir_visibility_local);
1246 add_entity_linkage(entity, IR_LINKAGE_CONSTANT);
1248 ir_type *const elem_type = ir_type_const_char;
1249 ir_mode *const mode = get_type_mode(elem_type);
1251 const char* const string = value->begin;
1252 const size_t slen = value->size;
1254 set_array_lower_bound_int(type, 0, 0);
1255 set_array_upper_bound_int(type, 0, slen);
1256 set_type_size_bytes(type, slen);
1257 set_type_state(type, layout_fixed);
1259 ir_initializer_t *initializer = create_initializer_compound(slen);
1260 for (size_t i = 0; i < slen; ++i) {
1261 tarval *tv = new_tarval_from_long(string[i], mode);
1262 ir_initializer_t *val = create_initializer_tarval(tv);
1263 set_initializer_compound_value(initializer, i, val);
1265 set_entity_initializer(entity, initializer);
1267 return create_symconst(dbgi, mode_P_data, entity);
1271 * Creates a SymConst node representing a string literal.
1273 * @param literal the string literal
1275 static ir_node *string_literal_to_firm(
1276 const string_literal_expression_t* literal)
1278 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1283 * Creates a SymConst node representing a wide string literal.
1285 * @param literal the wide string literal
1287 static ir_node *wide_string_literal_to_firm(
1288 const wide_string_literal_expression_t* const literal)
1290 ir_type *const global_type = get_glob_type();
1291 ir_type *const elem_type = ir_type_wchar_t;
1292 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1293 ir_type *const type = new_type_array(1, elem_type);
1295 ident *const id = id_unique("Lstr.%u");
1296 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1297 set_entity_ld_ident(entity, id);
1298 set_entity_visibility(entity, ir_visibility_local);
1299 add_entity_linkage(entity, IR_LINKAGE_CONSTANT);
1301 ir_mode *const mode = get_type_mode(elem_type);
1303 const wchar_rep_t *const string = literal->value.begin;
1304 const size_t slen = literal->value.size;
1306 set_array_lower_bound_int(type, 0, 0);
1307 set_array_upper_bound_int(type, 0, slen);
1308 set_type_size_bytes(type, slen * get_mode_size_bytes(mode));
1309 set_type_state(type, layout_fixed);
1311 ir_initializer_t *initializer = create_initializer_compound(slen);
1312 for (size_t i = 0; i < slen; ++i) {
1313 tarval *tv = new_tarval_from_long(string[i], mode);
1314 ir_initializer_t *val = create_initializer_tarval(tv);
1315 set_initializer_compound_value(initializer, i, val);
1317 set_entity_initializer(entity, initializer);
1319 return create_symconst(dbgi, mode_P_data, entity);
1323 * Dereference an address.
1325 * @param dbgi debug info
1326 * @param type the type of the dereferenced result (the points_to type)
1327 * @param addr the address to dereference
1329 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1330 ir_node *const addr)
1332 ir_type *irtype = get_ir_type(type);
1333 if (is_compound_type(irtype)
1334 || is_Method_type(irtype)
1335 || is_Array_type(irtype)) {
1339 ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
1340 ? cons_volatile : cons_none;
1341 ir_mode *const mode = get_type_mode(irtype);
1342 ir_node *const memory = get_store();
1343 ir_node *const load = new_d_Load(dbgi, memory, addr, mode, flags);
1344 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1345 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1347 set_store(load_mem);
1349 ir_mode *const mode_arithmetic = get_ir_mode_arithmetic(type);
1350 return create_conv(dbgi, load_res, mode_arithmetic);
1354 * Creates a strict Conv (to the node's mode) if necessary.
1356 * @param dbgi debug info
1357 * @param node the node to strict conv
1359 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1361 ir_mode *mode = get_irn_mode(node);
1363 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1365 if (!mode_is_float(mode))
1368 /* check if there is already a Conv */
1369 if (is_Conv(node)) {
1370 /* convert it into a strict Conv */
1371 set_Conv_strict(node, 1);
1375 /* otherwise create a new one */
1376 return new_d_strictConv(dbgi, node, mode);
1380 * Returns the address of a global variable.
1382 * @param dbgi debug info
1383 * @param variable the variable
1385 static ir_node *get_global_var_address(dbg_info *const dbgi,
1386 const variable_t *const variable)
1388 ir_entity *const irentity = variable->v.entity;
1389 if (variable->thread_local) {
1390 ir_node *const no_mem = new_NoMem();
1391 ir_node *const tls = get_irg_tls(current_ir_graph);
1392 return new_d_simpleSel(dbgi, no_mem, tls, irentity);
1394 return create_symconst(dbgi, mode_P_data, irentity);
1399 * Returns the correct base address depending on whether it is a parameter or a
1400 * normal local variable.
1402 static ir_node *get_local_frame(ir_entity *const ent)
1404 ir_graph *const irg = current_ir_graph;
1405 const ir_type *const owner = get_entity_owner(ent);
1406 if (owner == current_outer_frame || owner == current_outer_value_type) {
1407 assert(current_static_link != NULL);
1408 return current_static_link;
1410 return get_irg_frame(irg);
1415 * Keep all memory edges of the given block.
1417 static void keep_all_memory(ir_node *block)
1419 ir_node *old = get_cur_block();
1421 set_cur_block(block);
1422 keep_alive(get_store());
1423 /* TODO: keep all memory edges from restricted pointers */
1427 static ir_node *reference_expression_enum_value_to_firm(
1428 const reference_expression_t *ref)
1430 entity_t *entity = ref->entity;
1431 type_t *type = skip_typeref(entity->enum_value.enum_type);
1432 /* make sure the type is constructed */
1433 (void) get_ir_type(type);
1435 return new_Const(entity->enum_value.tv);
1438 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1440 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1441 entity_t *entity = ref->entity;
1442 assert(is_declaration(entity));
1443 type_t *type = skip_typeref(entity->declaration.type);
1445 /* make sure the type is constructed */
1446 (void) get_ir_type(type);
1448 /* for gcc compatibility we have to produce (dummy) addresses for some
1450 if (entity->kind == ENTITY_FUNCTION && entity->function.btk != bk_none) {
1451 if (warning.other) {
1452 warningf(&ref->base.source_position,
1453 "taking address of builtin '%Y'", ref->entity->base.symbol);
1456 /* simply create a NULL pointer */
1457 ir_mode *mode = get_ir_mode_arithmetic(type_void_ptr);
1458 ir_node *res = new_Const_long(mode, 0);
1463 switch ((declaration_kind_t) entity->declaration.kind) {
1464 case DECLARATION_KIND_UNKNOWN:
1467 case DECLARATION_KIND_LOCAL_VARIABLE: {
1468 ir_mode *const mode = get_ir_mode_storage(type);
1469 ir_node *const value = get_value(entity->variable.v.value_number, mode);
1470 return create_conv(NULL, value, get_ir_mode_arithmetic(type));
1472 case DECLARATION_KIND_PARAMETER: {
1473 ir_mode *const mode = get_ir_mode_storage(type);
1474 ir_node *const value = get_value(entity->parameter.v.value_number,mode);
1475 return create_conv(NULL, value, get_ir_mode_arithmetic(type));
1477 case DECLARATION_KIND_FUNCTION: {
1478 ir_mode *const mode = get_ir_mode_storage(type);
1479 return create_symconst(dbgi, mode, entity->function.irentity);
1481 case DECLARATION_KIND_INNER_FUNCTION: {
1482 ir_mode *const mode = get_ir_mode_storage(type);
1483 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1484 /* inner function not using the closure */
1485 return create_symconst(dbgi, mode, entity->function.irentity);
1487 /* need trampoline here */
1488 return create_trampoline(dbgi, mode, entity->function.irentity);
1491 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1492 const variable_t *variable = &entity->variable;
1493 ir_node *const addr = get_global_var_address(dbgi, variable);
1494 return deref_address(dbgi, variable->base.type, addr);
1497 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1498 ir_entity *irentity = entity->variable.v.entity;
1499 ir_node *frame = get_local_frame(irentity);
1500 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1501 return deref_address(dbgi, entity->declaration.type, sel);
1503 case DECLARATION_KIND_PARAMETER_ENTITY: {
1504 ir_entity *irentity = entity->parameter.v.entity;
1505 ir_node *frame = get_local_frame(irentity);
1506 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1507 return deref_address(dbgi, entity->declaration.type, sel);
1510 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1511 return entity->variable.v.vla_base;
1513 case DECLARATION_KIND_COMPOUND_MEMBER:
1514 panic("not implemented reference type");
1517 panic("reference to declaration with unknown type found");
1520 static ir_node *reference_addr(const reference_expression_t *ref)
1522 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1523 entity_t *entity = ref->entity;
1524 assert(is_declaration(entity));
1526 switch((declaration_kind_t) entity->declaration.kind) {
1527 case DECLARATION_KIND_UNKNOWN:
1529 case DECLARATION_KIND_PARAMETER:
1530 case DECLARATION_KIND_LOCAL_VARIABLE:
1531 /* you can store to a local variable (so we don't panic but return NULL
1532 * as an indicator for no real address) */
1534 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1535 ir_node *const addr = get_global_var_address(dbgi, &entity->variable);
1538 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1539 ir_entity *irentity = entity->variable.v.entity;
1540 ir_node *frame = get_local_frame(irentity);
1541 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1545 case DECLARATION_KIND_PARAMETER_ENTITY: {
1546 ir_entity *irentity = entity->parameter.v.entity;
1547 ir_node *frame = get_local_frame(irentity);
1548 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1553 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1554 return entity->variable.v.vla_base;
1556 case DECLARATION_KIND_FUNCTION: {
1557 type_t *const type = skip_typeref(entity->declaration.type);
1558 ir_mode *const mode = get_ir_mode_storage(type);
1559 return create_symconst(dbgi, mode, entity->function.irentity);
1562 case DECLARATION_KIND_INNER_FUNCTION: {
1563 type_t *const type = skip_typeref(entity->declaration.type);
1564 ir_mode *const mode = get_ir_mode_storage(type);
1565 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1566 /* inner function not using the closure */
1567 return create_symconst(dbgi, mode, entity->function.irentity);
1569 /* need trampoline here */
1570 return create_trampoline(dbgi, mode, entity->function.irentity);
1574 case DECLARATION_KIND_COMPOUND_MEMBER:
1575 panic("not implemented reference type");
1578 panic("reference to declaration with unknown type found");
1582 * Generate an unary builtin.
1584 * @param kind the builtin kind to generate
1585 * @param op the operand
1586 * @param function_type the function type for the GNU builtin routine
1587 * @param db debug info
1589 static ir_node *gen_unary_builtin(ir_builtin_kind kind, expression_t *op, type_t *function_type, dbg_info *db)
1592 in[0] = expression_to_firm(op);
1594 ir_type *tp = get_ir_type(function_type);
1595 ir_type *res = get_method_res_type(tp, 0);
1596 ir_node *irn = new_d_Builtin(db, get_irg_no_mem(current_ir_graph), 1, in, kind, tp);
1597 set_irn_pinned(irn, op_pin_state_floats);
1598 return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result);
1602 * Generate a pinned unary builtin.
1604 * @param kind the builtin kind to generate
1605 * @param op the operand
1606 * @param function_type the function type for the GNU builtin routine
1607 * @param db debug info
1609 static ir_node *gen_unary_builtin_pinned(ir_builtin_kind kind, expression_t *op, type_t *function_type, dbg_info *db)
1612 in[0] = expression_to_firm(op);
1614 ir_type *tp = get_ir_type(function_type);
1615 ir_type *res = get_method_res_type(tp, 0);
1616 ir_node *mem = get_store();
1617 ir_node *irn = new_d_Builtin(db, mem, 1, in, kind, tp);
1618 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1619 return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result);
1624 * Generate an binary-void-return builtin.
1626 * @param kind the builtin kind to generate
1627 * @param op1 the first operand
1628 * @param op2 the second operand
1629 * @param function_type the function type for the GNU builtin routine
1630 * @param db debug info
1632 static ir_node *gen_binary_builtin_mem(ir_builtin_kind kind, expression_t *op1, expression_t *op2,
1633 type_t *function_type, dbg_info *db)
1636 in[0] = expression_to_firm(op1);
1637 in[1] = expression_to_firm(op2);
1639 ir_type *tp = get_ir_type(function_type);
1640 ir_node *mem = get_store();
1641 ir_node *irn = new_d_Builtin(db, mem, 2, in, kind, tp);
1642 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1647 * Transform calls to builtin functions.
1649 static ir_node *process_builtin_call(const call_expression_t *call)
1651 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1653 assert(call->function->kind == EXPR_REFERENCE);
1654 reference_expression_t *builtin = &call->function->reference;
1656 type_t *type = skip_typeref(builtin->base.type);
1657 assert(is_type_pointer(type));
1659 type_t *function_type = skip_typeref(type->pointer.points_to);
1661 switch (builtin->entity->function.btk) {
1662 case bk_gnu_builtin_alloca: {
1663 if (call->arguments == NULL || call->arguments->next != NULL) {
1664 panic("invalid number of parameters on __builtin_alloca");
1666 expression_t *argument = call->arguments->expression;
1667 ir_node *size = expression_to_firm(argument);
1669 ir_node *store = get_store();
1670 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1672 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1674 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1679 case bk_gnu_builtin_huge_val:
1680 case bk_gnu_builtin_inf:
1681 case bk_gnu_builtin_inff:
1682 case bk_gnu_builtin_infl: {
1683 type_t *type = function_type->function.return_type;
1684 ir_mode *mode = get_ir_mode_arithmetic(type);
1685 tarval *tv = get_mode_infinite(mode);
1686 ir_node *res = new_d_Const(dbgi, tv);
1689 case bk_gnu_builtin_nan:
1690 case bk_gnu_builtin_nanf:
1691 case bk_gnu_builtin_nanl: {
1692 /* Ignore string for now... */
1693 assert(is_type_function(function_type));
1694 type_t *type = function_type->function.return_type;
1695 ir_mode *mode = get_ir_mode_arithmetic(type);
1696 tarval *tv = get_mode_NAN(mode);
1697 ir_node *res = new_d_Const(dbgi, tv);
1700 case bk_gnu_builtin_expect: {
1701 expression_t *argument = call->arguments->expression;
1702 return _expression_to_firm(argument);
1704 case bk_gnu_builtin_va_end:
1705 /* evaluate the argument of va_end for its side effects */
1706 _expression_to_firm(call->arguments->expression);
1708 case bk_gnu_builtin_frame_address: {
1709 expression_t *const expression = call->arguments->expression;
1710 bool val = fold_constant_to_bool(expression);
1713 return get_irg_frame(current_ir_graph);
1715 /* get the argument */
1718 in[0] = expression_to_firm(expression);
1719 in[1] = get_irg_frame(current_ir_graph);
1720 ir_type *tp = get_ir_type(function_type);
1721 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_frame_address, tp);
1722 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1725 case bk_gnu_builtin_return_address: {
1727 expression_t *const expression = call->arguments->expression;
1730 in[0] = expression_to_firm(expression);
1731 in[1] = get_irg_frame(current_ir_graph);
1732 ir_type *tp = get_ir_type(function_type);
1733 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_return_address, tp);
1734 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1736 case bk_gnu_builtin_ffs:
1737 return gen_unary_builtin(ir_bk_ffs, call->arguments->expression, function_type, dbgi);
1738 case bk_gnu_builtin_clz:
1739 return gen_unary_builtin(ir_bk_clz, call->arguments->expression, function_type, dbgi);
1740 case bk_gnu_builtin_ctz:
1741 return gen_unary_builtin(ir_bk_ctz, call->arguments->expression, function_type, dbgi);
1742 case bk_gnu_builtin_popcount:
1743 case bk_ms__popcount:
1744 return gen_unary_builtin(ir_bk_popcount, call->arguments->expression, function_type, dbgi);
1745 case bk_gnu_builtin_parity:
1746 return gen_unary_builtin(ir_bk_parity, call->arguments->expression, function_type, dbgi);
1747 case bk_gnu_builtin_prefetch: {
1748 call_argument_t *const args = call->arguments;
1749 expression_t *const addr = args->expression;
1752 in[0] = _expression_to_firm(addr);
1753 if (args->next != NULL) {
1754 expression_t *const rw = args->next->expression;
1756 in[1] = _expression_to_firm(rw);
1758 if (args->next->next != NULL) {
1759 expression_t *const locality = args->next->next->expression;
1761 in[2] = expression_to_firm(locality);
1763 in[2] = new_Const_long(mode_int, 3);
1766 in[1] = new_Const_long(mode_int, 0);
1767 in[2] = new_Const_long(mode_int, 3);
1769 ir_type *tp = get_ir_type(function_type);
1770 ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_prefetch, tp);
1771 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1774 case bk_gnu_builtin_trap:
1777 ir_type *tp = get_ir_type(function_type);
1778 ir_node *irn = new_d_Builtin(dbgi, get_store(), 0, NULL, ir_bk_trap, tp);
1779 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1782 case bk_ms__debugbreak: {
1783 ir_type *tp = get_ir_type(function_type);
1784 ir_node *irn = new_d_Builtin(dbgi, get_store(), 0, NULL, ir_bk_debugbreak, tp);
1785 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1788 case bk_ms_ReturnAddress: {
1791 in[0] = new_Const_long(mode_int, 0);
1792 in[1] = get_irg_frame(current_ir_graph);
1793 ir_type *tp = get_ir_type(function_type);
1794 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_return_address, tp);
1795 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1798 case bk_ms_rotl64: {
1799 ir_node *val = expression_to_firm(call->arguments->expression);
1800 ir_node *shf = expression_to_firm(call->arguments->next->expression);
1801 ir_mode *mode = get_irn_mode(val);
1802 return new_d_Rotl(dbgi, val, create_conv(dbgi, shf, mode_uint), mode);
1805 case bk_ms_rotr64: {
1806 ir_node *val = expression_to_firm(call->arguments->expression);
1807 ir_node *shf = expression_to_firm(call->arguments->next->expression);
1808 ir_mode *mode = get_irn_mode(val);
1809 ir_node *c = new_Const_long(mode_uint, get_mode_size_bits(mode));
1810 ir_node *sub = new_d_Sub(dbgi, c, create_conv(dbgi, shf, mode_uint), mode_uint);
1811 return new_d_Rotl(dbgi, val, sub, mode);
1813 case bk_ms_byteswap_ushort:
1814 case bk_ms_byteswap_ulong:
1815 case bk_ms_byteswap_uint64:
1816 return gen_unary_builtin(ir_bk_bswap, call->arguments->expression, function_type, dbgi);
1819 case bk_ms__indword:
1820 return gen_unary_builtin_pinned(ir_bk_inport, call->arguments->expression, function_type, dbgi);
1821 case bk_ms__outbyte:
1822 case bk_ms__outword:
1823 case bk_ms__outdword:
1824 return gen_binary_builtin_mem(ir_bk_outport, call->arguments->expression,
1825 call->arguments->next->expression, function_type, dbgi);
1827 panic("unsupported builtin found");
1832 * Transform a call expression.
1833 * Handles some special cases, like alloca() calls, which must be resolved
1834 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1835 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1838 static ir_node *call_expression_to_firm(const call_expression_t *const call)
1840 dbg_info *const dbgi = get_dbg_info(&call->base.source_position);
1841 assert(get_cur_block() != NULL);
1843 expression_t *function = call->function;
1844 if (function->kind == EXPR_REFERENCE) {
1845 const reference_expression_t *ref = &function->reference;
1846 entity_t *entity = ref->entity;
1848 if (entity->kind == ENTITY_FUNCTION) {
1849 if (entity->function.btk != bk_none) {
1850 return process_builtin_call(call);
1853 ir_entity *irentity = entity->function.irentity;
1854 if (irentity == NULL)
1855 irentity = get_function_entity(entity, NULL);
1857 if (irentity == rts_entities[rts_alloca]) {
1858 /* handle alloca() call */
1859 expression_t *argument = call->arguments->expression;
1860 ir_node *size = expression_to_firm(argument);
1861 ir_mode *mode = get_ir_mode_arithmetic(type_size_t);
1863 size = create_conv(dbgi, size, mode);
1865 ir_node *store = get_store();
1866 ir_node *alloca = new_d_Alloc(dbgi, store, size,
1867 firm_unknown_type, stack_alloc);
1868 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1870 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1876 ir_node *callee = expression_to_firm(function);
1878 type_t *type = skip_typeref(function->base.type);
1879 assert(is_type_pointer(type));
1880 pointer_type_t *pointer_type = &type->pointer;
1881 type_t *points_to = skip_typeref(pointer_type->points_to);
1882 assert(is_type_function(points_to));
1883 function_type_t *function_type = &points_to->function;
1885 int n_parameters = 0;
1886 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1887 ir_type *new_method_type = NULL;
1888 if (function_type->variadic || function_type->unspecified_parameters) {
1889 const call_argument_t *argument = call->arguments;
1890 for ( ; argument != NULL; argument = argument->next) {
1894 /* we need to construct a new method type matching the call
1896 type_dbg_info *tdbgi = get_type_dbg_info_((const type_t*) function_type);
1897 int n_res = get_method_n_ress(ir_method_type);
1898 new_method_type = new_d_type_method(n_parameters, n_res, tdbgi);
1899 set_method_calling_convention(new_method_type,
1900 get_method_calling_convention(ir_method_type));
1901 set_method_additional_properties(new_method_type,
1902 get_method_additional_properties(ir_method_type));
1903 set_method_variadicity(new_method_type,
1904 get_method_variadicity(ir_method_type));
1906 for (int i = 0; i < n_res; ++i) {
1907 set_method_res_type(new_method_type, i,
1908 get_method_res_type(ir_method_type, i));
1910 argument = call->arguments;
1911 for (int i = 0; i < n_parameters; ++i, argument = argument->next) {
1912 expression_t *expression = argument->expression;
1913 ir_type *irtype = get_ir_type(expression->base.type);
1914 set_method_param_type(new_method_type, i, irtype);
1916 ir_method_type = new_method_type;
1918 n_parameters = get_method_n_params(ir_method_type);
1921 ir_node *in[n_parameters];
1923 const call_argument_t *argument = call->arguments;
1924 for (int n = 0; n < n_parameters; ++n) {
1925 expression_t *expression = argument->expression;
1926 ir_node *arg_node = expression_to_firm(expression);
1928 type_t *type = skip_typeref(expression->base.type);
1929 if (!is_type_compound(type)) {
1930 ir_mode *mode = get_ir_mode_storage(expression->base.type);
1931 arg_node = create_conv(dbgi, arg_node, mode);
1932 arg_node = do_strict_conv(dbgi, arg_node);
1937 argument = argument->next;
1940 ir_node *store = get_store();
1941 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1943 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M);
1946 type_t *return_type = skip_typeref(function_type->return_type);
1947 ir_node *result = NULL;
1949 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1950 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1952 if (is_type_scalar(return_type)) {
1953 ir_mode *mode = get_ir_mode_storage(return_type);
1954 result = new_d_Proj(dbgi, resproj, mode, 0);
1955 ir_mode *mode_arith = get_ir_mode_arithmetic(return_type);
1956 result = create_conv(NULL, result, mode_arith);
1958 ir_mode *mode = mode_P_data;
1959 result = new_d_Proj(dbgi, resproj, mode, 0);
1963 if (function->kind == EXPR_REFERENCE &&
1964 function->reference.entity->declaration.modifiers & DM_NORETURN) {
1965 /* A dead end: Keep the Call and the Block. Also place all further
1966 * nodes into a new and unreachable block. */
1968 keep_alive(get_cur_block());
1975 static void statement_to_firm(statement_t *statement);
1976 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1978 static ir_node *expression_to_addr(const expression_t *expression);
1979 static ir_node *create_condition_evaluation(const expression_t *expression,
1980 ir_node *true_block,
1981 ir_node *false_block);
1983 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1986 if (!is_type_compound(type)) {
1987 ir_mode *mode = get_ir_mode_storage(type);
1988 value = create_conv(dbgi, value, mode);
1989 value = do_strict_conv(dbgi, value);
1992 ir_node *memory = get_store();
1994 if (is_type_scalar(type)) {
1995 ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
1996 ? cons_volatile : cons_none;
1997 ir_node *store = new_d_Store(dbgi, memory, addr, value, flags);
1998 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1999 set_store(store_mem);
2001 ir_type *irtype = get_ir_type(type);
2002 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
2003 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
2004 set_store(copyb_mem);
2008 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
2010 tarval *all_one = get_mode_all_one(mode);
2011 int mode_size = get_mode_size_bits(mode);
2013 assert(offset >= 0);
2015 assert(offset + size <= mode_size);
2016 if (size == mode_size) {
2020 long shiftr = get_mode_size_bits(mode) - size;
2021 long shiftl = offset;
2022 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
2023 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
2024 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
2025 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
2030 static ir_node *bitfield_store_to_firm(dbg_info *dbgi,
2031 ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile)
2033 ir_type *entity_type = get_entity_type(entity);
2034 ir_type *base_type = get_primitive_base_type(entity_type);
2035 assert(base_type != NULL);
2036 ir_mode *mode = get_type_mode(base_type);
2038 value = create_conv(dbgi, value, mode);
2040 /* kill upper bits of value and shift to right position */
2041 int bitoffset = get_entity_offset_bits_remainder(entity);
2042 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
2044 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
2045 ir_node *mask_node = new_d_Const(dbgi, mask);
2046 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
2047 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
2048 ir_node *shiftcount = new_d_Const(dbgi, shiftl);
2049 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
2051 /* load current value */
2052 ir_node *mem = get_store();
2053 ir_node *load = new_d_Load(dbgi, mem, addr, mode,
2054 set_volatile ? cons_volatile : cons_none);
2055 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
2056 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
2057 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
2058 tarval *inv_mask = tarval_not(shift_mask);
2059 ir_node *inv_mask_node = new_d_Const(dbgi, inv_mask);
2060 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
2062 /* construct new value and store */
2063 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
2064 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val,
2065 set_volatile ? cons_volatile : cons_none);
2066 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
2067 set_store(store_mem);
2069 return value_masked;
2072 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
2075 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2076 type_t *type = expression->base.type;
2077 ir_mode *mode = get_ir_mode_storage(type);
2078 ir_node *mem = get_store();
2079 ir_node *load = new_d_Load(dbgi, mem, addr, mode, cons_none);
2080 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
2081 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
2083 load_res = create_conv(dbgi, load_res, mode_int);
2085 set_store(load_mem);
2087 /* kill upper bits */
2088 assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER);
2089 ir_entity *entity = expression->compound_entry->compound_member.entity;
2090 int bitoffset = get_entity_offset_bits_remainder(entity);
2091 ir_type *entity_type = get_entity_type(entity);
2092 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
2093 long shift_bitsl = machine_size - bitoffset - bitsize;
2094 assert(shift_bitsl >= 0);
2095 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
2096 ir_node *countl = new_d_Const(dbgi, tvl);
2097 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
2099 long shift_bitsr = bitoffset + shift_bitsl;
2100 assert(shift_bitsr <= (long) machine_size);
2101 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
2102 ir_node *countr = new_d_Const(dbgi, tvr);
2104 if (mode_is_signed(mode)) {
2105 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
2107 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
2110 return create_conv(dbgi, shiftr, mode);
2113 /* make sure the selected compound type is constructed */
2114 static void construct_select_compound(const select_expression_t *expression)
2116 type_t *type = skip_typeref(expression->compound->base.type);
2117 if (is_type_pointer(type)) {
2118 type = type->pointer.points_to;
2120 (void) get_ir_type(type);
2123 static ir_node *set_value_for_expression_addr(const expression_t *expression,
2124 ir_node *value, ir_node *addr)
2126 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2127 type_t *type = skip_typeref(expression->base.type);
2129 if (!is_type_compound(type)) {
2130 ir_mode *mode = get_ir_mode_storage(type);
2131 value = create_conv(dbgi, value, mode);
2132 value = do_strict_conv(dbgi, value);
2135 if (expression->kind == EXPR_REFERENCE) {
2136 const reference_expression_t *ref = &expression->reference;
2138 entity_t *entity = ref->entity;
2139 assert(is_declaration(entity));
2140 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2141 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2142 set_value(entity->variable.v.value_number, value);
2144 } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2145 set_value(entity->parameter.v.value_number, value);
2151 addr = expression_to_addr(expression);
2152 assert(addr != NULL);
2154 if (expression->kind == EXPR_SELECT) {
2155 const select_expression_t *select = &expression->select;
2157 construct_select_compound(select);
2159 entity_t *entity = select->compound_entry;
2160 assert(entity->kind == ENTITY_COMPOUND_MEMBER);
2161 if (entity->declaration.type->kind == TYPE_BITFIELD) {
2162 ir_entity *irentity = entity->compound_member.entity;
2164 = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
2165 value = bitfield_store_to_firm(dbgi, irentity, addr, value,
2171 assign_value(dbgi, addr, type, value);
2175 static void set_value_for_expression(const expression_t *expression,
2178 set_value_for_expression_addr(expression, value, NULL);
2181 static ir_node *get_value_from_lvalue(const expression_t *expression,
2184 if (expression->kind == EXPR_REFERENCE) {
2185 const reference_expression_t *ref = &expression->reference;
2187 entity_t *entity = ref->entity;
2188 assert(entity->kind == ENTITY_VARIABLE
2189 || entity->kind == ENTITY_PARAMETER);
2190 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2192 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2193 value_number = entity->variable.v.value_number;
2194 assert(addr == NULL);
2195 type_t *type = skip_typeref(expression->base.type);
2196 ir_mode *mode = get_ir_mode_storage(type);
2197 ir_node *res = get_value(value_number, mode);
2198 return create_conv(NULL, res, get_ir_mode_arithmetic(type));
2199 } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2200 value_number = entity->parameter.v.value_number;
2201 assert(addr == NULL);
2202 type_t *type = skip_typeref(expression->base.type);
2203 ir_mode *mode = get_ir_mode_storage(type);
2204 ir_node *res = get_value(value_number, mode);
2205 return create_conv(NULL, res, get_ir_mode_arithmetic(type));
2209 assert(addr != NULL);
2210 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2213 if (expression->kind == EXPR_SELECT &&
2214 expression->select.compound_entry->declaration.type->kind == TYPE_BITFIELD){
2215 construct_select_compound(&expression->select);
2216 value = bitfield_extract_to_firm(&expression->select, addr);
2218 value = deref_address(dbgi, expression->base.type, addr);
2225 static ir_node *create_incdec(const unary_expression_t *expression)
2227 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2228 const expression_t *value_expr = expression->value;
2229 ir_node *addr = expression_to_addr(value_expr);
2230 ir_node *value = get_value_from_lvalue(value_expr, addr);
2232 type_t *type = skip_typeref(expression->base.type);
2233 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2236 if (is_type_pointer(type)) {
2237 pointer_type_t *pointer_type = &type->pointer;
2238 offset = get_type_size_node(pointer_type->points_to);
2240 assert(is_type_arithmetic(type));
2241 offset = new_Const(get_mode_one(mode));
2245 ir_node *store_value;
2246 switch(expression->base.kind) {
2247 case EXPR_UNARY_POSTFIX_INCREMENT:
2249 store_value = new_d_Add(dbgi, value, offset, mode);
2251 case EXPR_UNARY_POSTFIX_DECREMENT:
2253 store_value = new_d_Sub(dbgi, value, offset, mode);
2255 case EXPR_UNARY_PREFIX_INCREMENT:
2256 result = new_d_Add(dbgi, value, offset, mode);
2257 store_value = result;
2259 case EXPR_UNARY_PREFIX_DECREMENT:
2260 result = new_d_Sub(dbgi, value, offset, mode);
2261 store_value = result;
2264 panic("no incdec expr in create_incdec");
2267 set_value_for_expression_addr(value_expr, store_value, addr);
2272 static bool is_local_variable(expression_t *expression)
2274 if (expression->kind != EXPR_REFERENCE)
2276 reference_expression_t *ref_expr = &expression->reference;
2277 entity_t *entity = ref_expr->entity;
2278 if (entity->kind != ENTITY_VARIABLE)
2280 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2281 return entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE;
2284 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
2287 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
2288 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
2289 case EXPR_BINARY_NOTEQUAL:
2290 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
2291 case EXPR_BINARY_ISLESS:
2292 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
2293 case EXPR_BINARY_ISLESSEQUAL:
2294 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
2295 case EXPR_BINARY_ISGREATER:
2296 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
2297 case EXPR_BINARY_ISGREATEREQUAL:
2298 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
2299 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
2304 panic("trying to get pn_Cmp from non-comparison binexpr type");
2308 * Handle the assume optimizer hint: check if a Confirm
2309 * node can be created.
2311 * @param dbi debug info
2312 * @param expr the IL assume expression
2314 * we support here only some simple cases:
2319 static ir_node *handle_assume_compare(dbg_info *dbi,
2320 const binary_expression_t *expression)
2322 expression_t *op1 = expression->left;
2323 expression_t *op2 = expression->right;
2324 entity_t *var2, *var = NULL;
2325 ir_node *res = NULL;
2328 cmp_val = get_pnc(expression->base.kind, op1->base.type);
2330 if (is_local_variable(op1) && is_local_variable(op2)) {
2331 var = op1->reference.entity;
2332 var2 = op2->reference.entity;
2334 type_t *const type = skip_typeref(var->declaration.type);
2335 ir_mode *const mode = get_ir_mode_storage(type);
2337 ir_node *const irn1 = get_value(var->variable.v.value_number, mode);
2338 ir_node *const irn2 = get_value(var2->variable.v.value_number, mode);
2340 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
2341 set_value(var2->variable.v.value_number, res);
2343 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
2344 set_value(var->variable.v.value_number, res);
2350 if (is_local_variable(op1) && is_constant_expression(op2)) {
2351 var = op1->reference.entity;
2353 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2354 cmp_val = get_inversed_pnc(cmp_val);
2355 var = op2->reference.entity;
2360 type_t *const type = skip_typeref(var->declaration.type);
2361 ir_mode *const mode = get_ir_mode_storage(type);
2363 res = get_value(var->variable.v.value_number, mode);
2364 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2365 set_value(var->variable.v.value_number, res);
2371 * Handle the assume optimizer hint.
2373 * @param dbi debug info
2374 * @param expr the IL assume expression
2376 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression)
2378 switch(expression->kind) {
2379 case EXPR_BINARY_EQUAL:
2380 case EXPR_BINARY_NOTEQUAL:
2381 case EXPR_BINARY_LESS:
2382 case EXPR_BINARY_LESSEQUAL:
2383 case EXPR_BINARY_GREATER:
2384 case EXPR_BINARY_GREATEREQUAL:
2385 return handle_assume_compare(dbi, &expression->binary);
2391 static ir_node *create_cast(dbg_info *dbgi, ir_node *value_node,
2392 type_t *from_type, type_t *type)
2394 type = skip_typeref(type);
2395 if (!is_type_scalar(type)) {
2396 /* make sure firm type is constructed */
2397 (void) get_ir_type(type);
2401 from_type = skip_typeref(from_type);
2402 ir_mode *mode = get_ir_mode_storage(type);
2403 /* check for conversion from / to __based types */
2404 if (is_type_pointer(type) && is_type_pointer(from_type)) {
2405 const variable_t *from_var = from_type->pointer.base_variable;
2406 const variable_t *to_var = type->pointer.base_variable;
2407 if (from_var != to_var) {
2408 if (from_var != NULL) {
2409 ir_node *const addr = get_global_var_address(dbgi, from_var);
2410 ir_node *const base = deref_address(dbgi, from_var->base.type, addr);
2411 value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(from_type));
2413 if (to_var != NULL) {
2414 ir_node *const addr = get_global_var_address(dbgi, to_var);
2415 ir_node *const base = deref_address(dbgi, to_var->base.type, addr);
2416 value_node = new_d_Sub(dbgi, value_node, base, mode);
2421 if (is_type_atomic(type, ATOMIC_TYPE_BOOL)) {
2422 /* bool adjustments (we save a mode_Bu, but have to temporarily
2423 * convert to mode_b so we only get a 0/1 value */
2424 value_node = create_conv(dbgi, value_node, mode_b);
2427 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
2428 ir_node *node = create_conv(dbgi, value_node, mode);
2429 node = do_strict_conv(dbgi, node);
2430 node = create_conv(dbgi, node, mode_arith);
2435 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2437 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2438 type_t *type = skip_typeref(expression->base.type);
2440 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2441 return expression_to_addr(expression->value);
2443 const expression_t *value = expression->value;
2445 switch(expression->base.kind) {
2446 case EXPR_UNARY_NEGATE: {
2447 ir_node *value_node = expression_to_firm(value);
2448 ir_mode *mode = get_ir_mode_arithmetic(type);
2449 return new_d_Minus(dbgi, value_node, mode);
2451 case EXPR_UNARY_PLUS:
2452 return expression_to_firm(value);
2453 case EXPR_UNARY_BITWISE_NEGATE: {
2454 ir_node *value_node = expression_to_firm(value);
2455 ir_mode *mode = get_ir_mode_arithmetic(type);
2456 return new_d_Not(dbgi, value_node, mode);
2458 case EXPR_UNARY_NOT: {
2459 ir_node *value_node = _expression_to_firm(value);
2460 value_node = create_conv(dbgi, value_node, mode_b);
2461 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2464 case EXPR_UNARY_DEREFERENCE: {
2465 ir_node *value_node = expression_to_firm(value);
2466 type_t *value_type = skip_typeref(value->base.type);
2467 assert(is_type_pointer(value_type));
2469 /* check for __based */
2470 const variable_t *const base_var = value_type->pointer.base_variable;
2471 if (base_var != NULL) {
2472 ir_node *const addr = get_global_var_address(dbgi, base_var);
2473 ir_node *const base = deref_address(dbgi, base_var->base.type, addr);
2474 value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(value_type));
2476 type_t *points_to = value_type->pointer.points_to;
2477 return deref_address(dbgi, points_to, value_node);
2479 case EXPR_UNARY_POSTFIX_INCREMENT:
2480 case EXPR_UNARY_POSTFIX_DECREMENT:
2481 case EXPR_UNARY_PREFIX_INCREMENT:
2482 case EXPR_UNARY_PREFIX_DECREMENT:
2483 return create_incdec(expression);
2484 case EXPR_UNARY_CAST_IMPLICIT:
2485 case EXPR_UNARY_CAST: {
2486 ir_node *value_node = expression_to_firm(value);
2487 type_t *from_type = value->base.type;
2488 return create_cast(dbgi, value_node, from_type, type);
2490 case EXPR_UNARY_ASSUME:
2491 if (firm_opt.confirm)
2492 return handle_assume(dbgi, value);
2499 panic("invalid UNEXPR type found");
2503 * produces a 0/1 depending of the value of a mode_b node
2505 static ir_node *produce_condition_result(const expression_t *expression,
2506 ir_mode *mode, dbg_info *dbgi)
2508 ir_node *cur_block = get_cur_block();
2510 ir_node *one_block = new_immBlock();
2511 set_cur_block(one_block);
2512 ir_node *one = new_Const(get_mode_one(mode));
2513 ir_node *jmp_one = new_d_Jmp(dbgi);
2515 ir_node *zero_block = new_immBlock();
2516 set_cur_block(zero_block);
2517 ir_node *zero = new_Const(get_mode_null(mode));
2518 ir_node *jmp_zero = new_d_Jmp(dbgi);
2520 set_cur_block(cur_block);
2521 create_condition_evaluation(expression, one_block, zero_block);
2522 mature_immBlock(one_block);
2523 mature_immBlock(zero_block);
2525 ir_node *in_cf[2] = { jmp_one, jmp_zero };
2526 new_Block(2, in_cf);
2528 ir_node *in[2] = { one, zero };
2529 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2534 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2535 ir_node *value, type_t *type)
2537 ir_mode *const mode = get_ir_mode_arithmetic(type_ptrdiff_t);
2538 assert(is_type_pointer(type));
2539 pointer_type_t *const pointer_type = &type->pointer;
2540 type_t *const points_to = skip_typeref(pointer_type->points_to);
2541 ir_node * elem_size = get_type_size_node(points_to);
2542 elem_size = create_conv(dbgi, elem_size, mode);
2543 value = create_conv(dbgi, value, mode);
2544 ir_node *const mul = new_d_Mul(dbgi, value, elem_size, mode);
2548 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2549 ir_node *left, ir_node *right)
2552 type_t *type_left = skip_typeref(expression->left->base.type);
2553 type_t *type_right = skip_typeref(expression->right->base.type);
2555 expression_kind_t kind = expression->base.kind;
2558 case EXPR_BINARY_SHIFTLEFT:
2559 case EXPR_BINARY_SHIFTRIGHT:
2560 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2561 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2562 mode = get_irn_mode(left);
2563 right = create_conv(dbgi, right, mode_uint);
2566 case EXPR_BINARY_SUB:
2567 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2568 const pointer_type_t *const ptr_type = &type_left->pointer;
2570 mode = get_ir_mode_arithmetic(expression->base.type);
2571 ir_node *const elem_size = get_type_size_node(ptr_type->points_to);
2572 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2573 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2574 ir_node *const no_mem = new_NoMem();
2575 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2576 mode, op_pin_state_floats);
2577 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2580 case EXPR_BINARY_SUB_ASSIGN:
2581 if (is_type_pointer(type_left)) {
2582 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2583 mode = get_ir_mode_arithmetic(type_left);
2588 case EXPR_BINARY_ADD:
2589 case EXPR_BINARY_ADD_ASSIGN:
2590 if (is_type_pointer(type_left)) {
2591 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2592 mode = get_ir_mode_arithmetic(type_left);
2594 } else if (is_type_pointer(type_right)) {
2595 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2596 mode = get_ir_mode_arithmetic(type_right);
2603 mode = get_ir_mode_arithmetic(type_right);
2604 left = create_conv(dbgi, left, mode);
2609 case EXPR_BINARY_ADD_ASSIGN:
2610 case EXPR_BINARY_ADD:
2611 return new_d_Add(dbgi, left, right, mode);
2612 case EXPR_BINARY_SUB_ASSIGN:
2613 case EXPR_BINARY_SUB:
2614 return new_d_Sub(dbgi, left, right, mode);
2615 case EXPR_BINARY_MUL_ASSIGN:
2616 case EXPR_BINARY_MUL:
2617 return new_d_Mul(dbgi, left, right, mode);
2618 case EXPR_BINARY_BITWISE_AND:
2619 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2620 return new_d_And(dbgi, left, right, mode);
2621 case EXPR_BINARY_BITWISE_OR:
2622 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2623 return new_d_Or(dbgi, left, right, mode);
2624 case EXPR_BINARY_BITWISE_XOR:
2625 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2626 return new_d_Eor(dbgi, left, right, mode);
2627 case EXPR_BINARY_SHIFTLEFT:
2628 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2629 return new_d_Shl(dbgi, left, right, mode);
2630 case EXPR_BINARY_SHIFTRIGHT:
2631 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2632 if (mode_is_signed(mode)) {
2633 return new_d_Shrs(dbgi, left, right, mode);
2635 return new_d_Shr(dbgi, left, right, mode);
2637 case EXPR_BINARY_DIV:
2638 case EXPR_BINARY_DIV_ASSIGN: {
2639 ir_node *pin = new_Pin(new_NoMem());
2642 if (mode_is_float(mode)) {
2643 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2644 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2646 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2647 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2651 case EXPR_BINARY_MOD:
2652 case EXPR_BINARY_MOD_ASSIGN: {
2653 ir_node *pin = new_Pin(new_NoMem());
2654 assert(!mode_is_float(mode));
2655 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2656 op_pin_state_floats);
2657 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2661 panic("unexpected expression kind");
2665 static ir_node *create_lazy_op(const binary_expression_t *expression)
2667 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2668 type_t *type = skip_typeref(expression->base.type);
2669 ir_mode *mode = get_ir_mode_arithmetic(type);
2671 if (is_constant_expression(expression->left)) {
2672 bool val = fold_constant_to_bool(expression->left);
2673 expression_kind_t ekind = expression->base.kind;
2674 assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
2675 if (ekind == EXPR_BINARY_LOGICAL_AND) {
2677 return new_Const(get_mode_null(mode));
2681 return new_Const(get_mode_one(mode));
2685 if (is_constant_expression(expression->right)) {
2686 bool valr = fold_constant_to_bool(expression->right);
2688 new_Const(get_mode_one(mode)) :
2689 new_Const(get_mode_null(mode));
2692 return produce_condition_result(expression->right, mode, dbgi);
2695 return produce_condition_result((const expression_t*) expression, mode,
2699 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2700 ir_node *right, ir_mode *mode);
2702 static ir_node *create_assign_binop(const binary_expression_t *expression)
2704 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2705 const expression_t *left_expr = expression->left;
2706 type_t *type = skip_typeref(left_expr->base.type);
2707 ir_node *right = expression_to_firm(expression->right);
2708 ir_node *left_addr = expression_to_addr(left_expr);
2709 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2710 ir_node *result = create_op(dbgi, expression, left, right);
2712 result = create_cast(dbgi, result, expression->right->base.type, type);
2713 result = do_strict_conv(dbgi, result);
2715 result = set_value_for_expression_addr(left_expr, result, left_addr);
2717 if (!is_type_compound(type)) {
2718 ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
2719 result = create_conv(dbgi, result, mode_arithmetic);
2724 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2726 expression_kind_t kind = expression->base.kind;
2729 case EXPR_BINARY_EQUAL:
2730 case EXPR_BINARY_NOTEQUAL:
2731 case EXPR_BINARY_LESS:
2732 case EXPR_BINARY_LESSEQUAL:
2733 case EXPR_BINARY_GREATER:
2734 case EXPR_BINARY_GREATEREQUAL:
2735 case EXPR_BINARY_ISGREATER:
2736 case EXPR_BINARY_ISGREATEREQUAL:
2737 case EXPR_BINARY_ISLESS:
2738 case EXPR_BINARY_ISLESSEQUAL:
2739 case EXPR_BINARY_ISLESSGREATER:
2740 case EXPR_BINARY_ISUNORDERED: {
2741 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2742 ir_node *left = expression_to_firm(expression->left);
2743 ir_node *right = expression_to_firm(expression->right);
2744 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2745 long pnc = get_pnc(kind, expression->left->base.type);
2746 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2749 case EXPR_BINARY_ASSIGN: {
2750 ir_node *addr = expression_to_addr(expression->left);
2751 ir_node *right = expression_to_firm(expression->right);
2753 = set_value_for_expression_addr(expression->left, right, addr);
2755 type_t *type = skip_typeref(expression->base.type);
2756 if (!is_type_compound(type)) {
2757 ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
2758 res = create_conv(NULL, res, mode_arithmetic);
2762 case EXPR_BINARY_ADD:
2763 case EXPR_BINARY_SUB:
2764 case EXPR_BINARY_MUL:
2765 case EXPR_BINARY_DIV:
2766 case EXPR_BINARY_MOD:
2767 case EXPR_BINARY_BITWISE_AND:
2768 case EXPR_BINARY_BITWISE_OR:
2769 case EXPR_BINARY_BITWISE_XOR:
2770 case EXPR_BINARY_SHIFTLEFT:
2771 case EXPR_BINARY_SHIFTRIGHT:
2773 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2774 ir_node *left = expression_to_firm(expression->left);
2775 ir_node *right = expression_to_firm(expression->right);
2776 return create_op(dbgi, expression, left, right);
2778 case EXPR_BINARY_LOGICAL_AND:
2779 case EXPR_BINARY_LOGICAL_OR:
2780 return create_lazy_op(expression);
2781 case EXPR_BINARY_COMMA:
2782 /* create side effects of left side */
2783 (void) expression_to_firm(expression->left);
2784 return _expression_to_firm(expression->right);
2786 case EXPR_BINARY_ADD_ASSIGN:
2787 case EXPR_BINARY_SUB_ASSIGN:
2788 case EXPR_BINARY_MUL_ASSIGN:
2789 case EXPR_BINARY_MOD_ASSIGN:
2790 case EXPR_BINARY_DIV_ASSIGN:
2791 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2792 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2793 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2794 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2795 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2796 return create_assign_binop(expression);
2798 panic("TODO binexpr type");
2802 static ir_node *array_access_addr(const array_access_expression_t *expression)
2804 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2805 ir_node *base_addr = expression_to_firm(expression->array_ref);
2806 ir_node *offset = expression_to_firm(expression->index);
2807 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2808 ir_node *real_offset = adjust_for_pointer_arithmetic(dbgi, offset, ref_type);
2809 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2814 static ir_node *array_access_to_firm(
2815 const array_access_expression_t *expression)
2817 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2818 ir_node *addr = array_access_addr(expression);
2819 type_t *type = revert_automatic_type_conversion(
2820 (const expression_t*) expression);
2821 type = skip_typeref(type);
2823 return deref_address(dbgi, type, addr);
2826 static long get_offsetof_offset(const offsetof_expression_t *expression)
2828 type_t *orig_type = expression->type;
2831 designator_t *designator = expression->designator;
2832 for ( ; designator != NULL; designator = designator->next) {
2833 type_t *type = skip_typeref(orig_type);
2834 /* be sure the type is constructed */
2835 (void) get_ir_type(type);
2837 if (designator->symbol != NULL) {
2838 assert(is_type_compound(type));
2839 symbol_t *symbol = designator->symbol;
2841 compound_t *compound = type->compound.compound;
2842 entity_t *iter = compound->members.entities;
2843 for ( ; iter != NULL; iter = iter->base.next) {
2844 if (iter->base.symbol == symbol) {
2848 assert(iter != NULL);
2850 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
2851 assert(iter->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2852 offset += get_entity_offset(iter->compound_member.entity);
2854 orig_type = iter->declaration.type;
2856 expression_t *array_index = designator->array_index;
2857 assert(designator->array_index != NULL);
2858 assert(is_type_array(type));
2860 long index = fold_constant_to_int(array_index);
2861 ir_type *arr_type = get_ir_type(type);
2862 ir_type *elem_type = get_array_element_type(arr_type);
2863 long elem_size = get_type_size_bytes(elem_type);
2865 offset += index * elem_size;
2867 orig_type = type->array.element_type;
2874 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2876 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2877 long offset = get_offsetof_offset(expression);
2878 tarval *tv = new_tarval_from_long(offset, mode);
2879 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2881 return new_d_Const(dbgi, tv);
2884 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2885 ir_entity *entity, type_t *type);
2887 static ir_node *compound_literal_to_firm(
2888 const compound_literal_expression_t *expression)
2890 type_t *type = expression->type;
2892 /* create an entity on the stack */
2893 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2895 ident *const id = id_unique("CompLit.%u");
2896 ir_type *const irtype = get_ir_type(type);
2897 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2898 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2899 set_entity_ld_ident(entity, id);
2901 /* create initialisation code */
2902 initializer_t *initializer = expression->initializer;
2903 create_local_initializer(initializer, dbgi, entity, type);
2905 /* create a sel for the compound literal address */
2906 ir_node *frame = get_irg_frame(current_ir_graph);
2907 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2912 * Transform a sizeof expression into Firm code.
2914 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2916 type_t *const type = skip_typeref(expression->type);
2917 /* §6.5.3.4:2 if the type is a VLA, evaluate the expression. */
2918 if (is_type_array(type) && type->array.is_vla
2919 && expression->tp_expression != NULL) {
2920 expression_to_firm(expression->tp_expression);
2923 return get_type_size_node(type);
2926 static entity_t *get_expression_entity(const expression_t *expression)
2928 if (expression->kind != EXPR_REFERENCE)
2931 return expression->reference.entity;
2934 static unsigned get_cparser_entity_alignment(const entity_t *entity)
2936 switch(entity->kind) {
2937 DECLARATION_KIND_CASES
2938 return entity->declaration.alignment;
2941 return entity->compound.alignment;
2942 case ENTITY_TYPEDEF:
2943 return entity->typedefe.alignment;
2951 * Transform an alignof expression into Firm code.
2953 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2955 unsigned alignment = 0;
2957 const expression_t *tp_expression = expression->tp_expression;
2958 if (tp_expression != NULL) {
2959 entity_t *entity = get_expression_entity(tp_expression);
2960 if (entity != NULL) {
2961 alignment = get_cparser_entity_alignment(entity);
2965 if (alignment == 0) {
2966 type_t *type = expression->type;
2967 alignment = get_type_alignment(type);
2970 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2971 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2972 tarval *tv = new_tarval_from_long(alignment, mode);
2973 return new_d_Const(dbgi, tv);
2976 static void init_ir_types(void);
2978 static tarval *fold_constant_to_tarval(const expression_t *expression)
2980 assert(is_type_valid(skip_typeref(expression->base.type)));
2982 bool constant_folding_old = constant_folding;
2983 constant_folding = true;
2987 assert(is_constant_expression(expression));
2989 ir_graph *old_current_ir_graph = current_ir_graph;
2990 current_ir_graph = get_const_code_irg();
2992 ir_node *cnst = expression_to_firm(expression);
2993 current_ir_graph = old_current_ir_graph;
2995 if (!is_Const(cnst)) {
2996 panic("couldn't fold constant");
2999 constant_folding = constant_folding_old;
3001 tarval *tv = get_Const_tarval(cnst);
3005 long fold_constant_to_int(const expression_t *expression)
3007 if (expression->kind == EXPR_INVALID)
3010 tarval *tv = fold_constant_to_tarval(expression);
3011 if (!tarval_is_long(tv)) {
3012 panic("result of constant folding is not integer");
3015 return get_tarval_long(tv);
3018 bool fold_constant_to_bool(const expression_t *expression)
3020 if (expression->kind == EXPR_INVALID)
3022 tarval *tv = fold_constant_to_tarval(expression);
3023 return !tarval_is_null(tv);
3026 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
3028 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
3030 /* first try to fold a constant condition */
3031 if (is_constant_expression(expression->condition)) {
3032 bool val = fold_constant_to_bool(expression->condition);
3034 expression_t *true_expression = expression->true_expression;
3035 if (true_expression == NULL)
3036 true_expression = expression->condition;
3037 return expression_to_firm(true_expression);
3039 return expression_to_firm(expression->false_expression);
3043 ir_node *cur_block = get_cur_block();
3045 /* create the true block */
3046 ir_node *true_block = new_immBlock();
3047 set_cur_block(true_block);
3049 ir_node *true_val = expression->true_expression != NULL ?
3050 expression_to_firm(expression->true_expression) : NULL;
3051 ir_node *true_jmp = new_Jmp();
3053 /* create the false block */
3054 ir_node *false_block = new_immBlock();
3055 set_cur_block(false_block);
3057 ir_node *false_val = expression_to_firm(expression->false_expression);
3058 ir_node *false_jmp = new_Jmp();
3060 /* create the condition evaluation */
3061 set_cur_block(cur_block);
3062 ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
3063 if (expression->true_expression == NULL) {
3064 if (cond_expr != NULL && get_irn_mode(cond_expr) != mode_b) {
3065 true_val = cond_expr;
3067 /* Condition ended with a short circuit (&&, ||, !) operation or a
3068 * comparison. Generate a "1" as value for the true branch. */
3069 true_val = new_Const(get_mode_one(mode_Is));
3072 mature_immBlock(true_block);
3073 mature_immBlock(false_block);
3075 /* create the common block */
3076 ir_node *in_cf[2] = { true_jmp, false_jmp };
3077 new_Block(2, in_cf);
3079 /* TODO improve static semantics, so either both or no values are NULL */
3080 if (true_val == NULL || false_val == NULL)
3083 ir_node *in[2] = { true_val, false_val };
3084 ir_mode *mode = get_irn_mode(true_val);
3085 assert(get_irn_mode(false_val) == mode);
3086 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
3092 * Returns an IR-node representing the address of a field.
3094 static ir_node *select_addr(const select_expression_t *expression)
3096 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3098 construct_select_compound(expression);
3100 ir_node *compound_addr = expression_to_firm(expression->compound);
3102 entity_t *entry = expression->compound_entry;
3103 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3104 assert(entry->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
3106 if (constant_folding) {
3107 ir_mode *mode = get_irn_mode(compound_addr);
3108 /* FIXME: here, we need an integer mode with the same number of bits as mode */
3109 ir_node *ofs = new_Const_long(mode_uint, entry->compound_member.offset);
3110 return new_d_Add(dbgi, compound_addr, ofs, mode);
3112 ir_entity *irentity = entry->compound_member.entity;
3113 assert(irentity != NULL);
3114 return new_d_simpleSel(dbgi, new_NoMem(), compound_addr, irentity);
3118 static ir_node *select_to_firm(const select_expression_t *expression)
3120 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3121 ir_node *addr = select_addr(expression);
3122 type_t *type = revert_automatic_type_conversion(
3123 (const expression_t*) expression);
3124 type = skip_typeref(type);
3126 entity_t *entry = expression->compound_entry;
3127 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3128 type_t *entry_type = skip_typeref(entry->declaration.type);
3130 if (entry_type->kind == TYPE_BITFIELD) {
3131 return bitfield_extract_to_firm(expression, addr);
3134 return deref_address(dbgi, type, addr);
3137 /* Values returned by __builtin_classify_type. */
3138 typedef enum gcc_type_class
3144 enumeral_type_class,
3147 reference_type_class,
3151 function_type_class,
3162 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
3164 type_t *type = expr->type_expression->base.type;
3166 /* FIXME gcc returns different values depending on whether compiling C or C++
3167 * e.g. int x[10] is pointer_type_class in C, but array_type_class in C++ */
3170 type = skip_typeref(type);
3171 switch (type->kind) {
3173 const atomic_type_t *const atomic_type = &type->atomic;
3174 switch (atomic_type->akind) {
3175 /* should not be reached */
3176 case ATOMIC_TYPE_INVALID:
3180 /* gcc cannot do that */
3181 case ATOMIC_TYPE_VOID:
3182 tc = void_type_class;
3185 case ATOMIC_TYPE_WCHAR_T: /* gcc handles this as integer */
3186 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
3187 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
3188 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
3189 case ATOMIC_TYPE_SHORT:
3190 case ATOMIC_TYPE_USHORT:
3191 case ATOMIC_TYPE_INT:
3192 case ATOMIC_TYPE_UINT:
3193 case ATOMIC_TYPE_LONG:
3194 case ATOMIC_TYPE_ULONG:
3195 case ATOMIC_TYPE_LONGLONG:
3196 case ATOMIC_TYPE_ULONGLONG:
3197 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
3198 tc = integer_type_class;
3201 case ATOMIC_TYPE_FLOAT:
3202 case ATOMIC_TYPE_DOUBLE:
3203 case ATOMIC_TYPE_LONG_DOUBLE:
3204 tc = real_type_class;
3207 panic("Unexpected atomic type in classify_type_to_firm().");
3210 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
3211 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
3212 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
3213 case TYPE_ARRAY: /* gcc handles this as pointer */
3214 case TYPE_FUNCTION: /* gcc handles this as pointer */
3215 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
3216 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
3217 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
3219 /* gcc handles this as integer */
3220 case TYPE_ENUM: tc = integer_type_class; goto make_const;
3222 /* gcc classifies the referenced type */
3223 case TYPE_REFERENCE: type = type->reference.refers_to; continue;
3226 /* typedef/typeof should be skipped already */
3233 panic("unexpected TYPE classify_type_to_firm().");
3237 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3238 tarval *const tv = new_tarval_from_long(tc, mode_int);
3239 return new_d_Const(dbgi, tv);
3242 static ir_node *function_name_to_firm(
3243 const funcname_expression_t *const expr)
3245 switch(expr->kind) {
3246 case FUNCNAME_FUNCTION:
3247 case FUNCNAME_PRETTY_FUNCTION:
3248 case FUNCNAME_FUNCDNAME:
3249 if (current_function_name == NULL) {
3250 const source_position_t *const src_pos = &expr->base.source_position;
3251 const char *name = current_function_entity->base.symbol->string;
3252 const string_t string = { name, strlen(name) + 1 };
3253 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
3255 return current_function_name;
3256 case FUNCNAME_FUNCSIG:
3257 if (current_funcsig == NULL) {
3258 const source_position_t *const src_pos = &expr->base.source_position;
3259 ir_entity *ent = get_irg_entity(current_ir_graph);
3260 const char *const name = get_entity_ld_name(ent);
3261 const string_t string = { name, strlen(name) + 1 };
3262 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
3264 return current_funcsig;
3266 panic("Unsupported function name");
3269 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
3271 statement_t *statement = expr->statement;
3273 assert(statement->kind == STATEMENT_COMPOUND);
3274 return compound_statement_to_firm(&statement->compound);
3277 static ir_node *va_start_expression_to_firm(
3278 const va_start_expression_t *const expr)
3280 type_t *const type = current_function_entity->declaration.type;
3281 ir_type *const method_type = get_ir_type(type);
3282 int const n = get_method_n_params(method_type) - 1;
3283 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
3284 ir_node *const frame = get_irg_frame(current_ir_graph);
3285 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3286 ir_node *const no_mem = new_NoMem();
3287 ir_node *const arg_sel =
3288 new_d_simpleSel(dbgi, no_mem, frame, parm_ent);
3290 type_t *const param_type = expr->parameter->base.type;
3291 ir_node *const cnst = get_type_size_node(param_type);
3292 ir_mode *const mode = get_irn_mode(cnst);
3293 ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
3294 ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
3295 ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align);
3296 ir_node *const c4 = new_d_And(dbgi, c2, c3, mode);
3297 ir_node *const add = new_d_Add(dbgi, arg_sel, c4, mode_P_data);
3298 set_value_for_expression(expr->ap, add);
3303 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
3305 type_t *const type = expr->base.type;
3306 expression_t *const ap_expr = expr->ap;
3307 ir_node *const ap_addr = expression_to_addr(ap_expr);
3308 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
3309 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3310 ir_node *const res = deref_address(dbgi, type, ap);
3312 ir_node *const cnst = get_type_size_node(expr->base.type);
3313 ir_mode *const mode = get_irn_mode(cnst);
3314 ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
3315 ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
3316 ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align);
3317 ir_node *const c4 = new_d_And(dbgi, c2, c3, mode);
3318 ir_node *const add = new_d_Add(dbgi, ap, c4, mode_P_data);
3320 set_value_for_expression_addr(ap_expr, add, ap_addr);
3326 * Generate Firm for a va_copy expression.
3328 static ir_node *va_copy_expression_to_firm(const va_copy_expression_t *const expr)
3330 ir_node *const src = expression_to_firm(expr->src);
3331 set_value_for_expression(expr->dst, src);
3335 static ir_node *dereference_addr(const unary_expression_t *const expression)
3337 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
3338 return expression_to_firm(expression->value);
3342 * Returns a IR-node representing an lvalue of the given expression.
3344 static ir_node *expression_to_addr(const expression_t *expression)
3346 switch(expression->kind) {
3347 case EXPR_ARRAY_ACCESS:
3348 return array_access_addr(&expression->array_access);
3350 return call_expression_to_firm(&expression->call);
3351 case EXPR_COMPOUND_LITERAL:
3352 return compound_literal_to_firm(&expression->compound_literal);
3353 case EXPR_REFERENCE:
3354 return reference_addr(&expression->reference);
3356 return select_addr(&expression->select);
3357 case EXPR_UNARY_DEREFERENCE:
3358 return dereference_addr(&expression->unary);
3362 panic("trying to get address of non-lvalue");
3365 static ir_node *builtin_constant_to_firm(
3366 const builtin_constant_expression_t *expression)
3368 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3371 if (is_constant_expression(expression->value)) {
3376 return new_Const_long(mode, v);
3379 static ir_node *builtin_types_compatible_to_firm(
3380 const builtin_types_compatible_expression_t *expression)
3382 type_t *const left = get_unqualified_type(skip_typeref(expression->left));
3383 type_t *const right = get_unqualified_type(skip_typeref(expression->right));
3384 long const value = types_compatible(left, right) ? 1 : 0;
3385 ir_mode *const mode = get_ir_mode_arithmetic(expression->base.type);
3386 return new_Const_long(mode, value);
3389 static ir_node *get_label_block(label_t *label)
3391 if (label->block != NULL)
3392 return label->block;
3394 /* beware: might be called from create initializer with current_ir_graph
3395 * set to const_code_irg. */
3396 ir_graph *rem = current_ir_graph;
3397 current_ir_graph = current_function;
3399 ir_node *block = new_immBlock();
3401 label->block = block;
3403 ARR_APP1(label_t *, all_labels, label);
3405 current_ir_graph = rem;
3410 * Pointer to a label. This is used for the
3411 * GNU address-of-label extension.
3413 static ir_node *label_address_to_firm(const label_address_expression_t *label)
3415 dbg_info *dbgi = get_dbg_info(&label->base.source_position);
3416 ir_node *block = get_label_block(label->label);
3417 ir_entity *entity = create_Block_entity(block);
3419 symconst_symbol value;
3420 value.entity_p = entity;
3421 return new_d_SymConst(dbgi, mode_P_code, value, symconst_addr_ent);
3425 * creates firm nodes for an expression. The difference between this function
3426 * and expression_to_firm is, that this version might produce mode_b nodes
3427 * instead of mode_Is.
3429 static ir_node *_expression_to_firm(const expression_t *expression)
3432 if (!constant_folding) {
3433 assert(!expression->base.transformed);
3434 ((expression_t*) expression)->base.transformed = true;
3438 switch (expression->kind) {
3439 case EXPR_CHARACTER_CONSTANT:
3440 return character_constant_to_firm(&expression->conste);
3441 case EXPR_WIDE_CHARACTER_CONSTANT:
3442 return wide_character_constant_to_firm(&expression->conste);
3444 return const_to_firm(&expression->conste);
3445 case EXPR_STRING_LITERAL:
3446 return string_literal_to_firm(&expression->string);
3447 case EXPR_WIDE_STRING_LITERAL:
3448 return wide_string_literal_to_firm(&expression->wide_string);
3449 case EXPR_REFERENCE:
3450 return reference_expression_to_firm(&expression->reference);
3451 case EXPR_REFERENCE_ENUM_VALUE:
3452 return reference_expression_enum_value_to_firm(&expression->reference);
3454 return call_expression_to_firm(&expression->call);
3456 return unary_expression_to_firm(&expression->unary);
3458 return binary_expression_to_firm(&expression->binary);
3459 case EXPR_ARRAY_ACCESS:
3460 return array_access_to_firm(&expression->array_access);
3462 return sizeof_to_firm(&expression->typeprop);
3464 return alignof_to_firm(&expression->typeprop);
3465 case EXPR_CONDITIONAL:
3466 return conditional_to_firm(&expression->conditional);
3468 return select_to_firm(&expression->select);
3469 case EXPR_CLASSIFY_TYPE:
3470 return classify_type_to_firm(&expression->classify_type);
3472 return function_name_to_firm(&expression->funcname);
3473 case EXPR_STATEMENT:
3474 return statement_expression_to_firm(&expression->statement);
3476 return va_start_expression_to_firm(&expression->va_starte);
3478 return va_arg_expression_to_firm(&expression->va_arge);
3480 return va_copy_expression_to_firm(&expression->va_copye);
3481 case EXPR_BUILTIN_CONSTANT_P:
3482 return builtin_constant_to_firm(&expression->builtin_constant);
3483 case EXPR_BUILTIN_TYPES_COMPATIBLE_P:
3484 return builtin_types_compatible_to_firm(&expression->builtin_types_compatible);
3486 return offsetof_to_firm(&expression->offsetofe);
3487 case EXPR_COMPOUND_LITERAL:
3488 return compound_literal_to_firm(&expression->compound_literal);
3489 case EXPR_LABEL_ADDRESS:
3490 return label_address_to_firm(&expression->label_address);
3496 panic("invalid expression found");
3500 * Check if a given expression is a GNU __builtin_expect() call.
3502 static bool is_builtin_expect(const expression_t *expression)
3504 if (expression->kind != EXPR_CALL)
3507 expression_t *function = expression->call.function;
3508 if (function->kind != EXPR_REFERENCE)
3510 reference_expression_t *ref = &function->reference;
3511 if (ref->entity->kind != ENTITY_FUNCTION ||
3512 ref->entity->function.btk != bk_gnu_builtin_expect)
3518 static bool produces_mode_b(const expression_t *expression)
3520 switch (expression->kind) {
3521 case EXPR_BINARY_EQUAL:
3522 case EXPR_BINARY_NOTEQUAL:
3523 case EXPR_BINARY_LESS:
3524 case EXPR_BINARY_LESSEQUAL:
3525 case EXPR_BINARY_GREATER:
3526 case EXPR_BINARY_GREATEREQUAL:
3527 case EXPR_BINARY_ISGREATER:
3528 case EXPR_BINARY_ISGREATEREQUAL:
3529 case EXPR_BINARY_ISLESS:
3530 case EXPR_BINARY_ISLESSEQUAL:
3531 case EXPR_BINARY_ISLESSGREATER:
3532 case EXPR_BINARY_ISUNORDERED:
3533 case EXPR_UNARY_NOT:
3537 if (is_builtin_expect(expression)) {
3538 expression_t *argument = expression->call.arguments->expression;
3539 return produces_mode_b(argument);
3542 case EXPR_BINARY_COMMA:
3543 return produces_mode_b(expression->binary.right);
3550 static ir_node *expression_to_firm(const expression_t *expression)
3552 if (!produces_mode_b(expression)) {
3553 ir_node *res = _expression_to_firm(expression);
3554 assert(res == NULL || get_irn_mode(res) != mode_b);
3558 if (is_constant_expression(expression)) {
3559 ir_node *res = _expression_to_firm(expression);
3560 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3561 assert(is_Const(res));
3562 if (is_Const_null(res)) {
3563 return new_Const_long(mode, 0);
3565 return new_Const_long(mode, 1);
3569 /* we have to produce a 0/1 from the mode_b expression */
3570 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3571 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3572 return produce_condition_result(expression, mode, dbgi);
3576 * create a short-circuit expression evaluation that tries to construct
3577 * efficient control flow structures for &&, || and ! expressions
3579 static ir_node *create_condition_evaluation(const expression_t *expression,
3580 ir_node *true_block,
3581 ir_node *false_block)
3583 switch(expression->kind) {
3584 case EXPR_UNARY_NOT: {
3585 const unary_expression_t *unary_expression = &expression->unary;
3586 create_condition_evaluation(unary_expression->value, false_block,
3590 case EXPR_BINARY_LOGICAL_AND: {
3591 const binary_expression_t *binary_expression = &expression->binary;
3593 ir_node *extra_block = new_immBlock();
3594 create_condition_evaluation(binary_expression->left, extra_block,
3596 mature_immBlock(extra_block);
3597 set_cur_block(extra_block);
3598 create_condition_evaluation(binary_expression->right, true_block,
3602 case EXPR_BINARY_LOGICAL_OR: {
3603 const binary_expression_t *binary_expression = &expression->binary;
3605 ir_node *extra_block = new_immBlock();
3606 create_condition_evaluation(binary_expression->left, true_block,
3608 mature_immBlock(extra_block);
3609 set_cur_block(extra_block);
3610 create_condition_evaluation(binary_expression->right, true_block,
3618 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3619 ir_node *cond_expr = _expression_to_firm(expression);
3620 ir_node *condition = create_conv(dbgi, cond_expr, mode_b);
3621 ir_node *cond = new_d_Cond(dbgi, condition);
3622 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3623 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3625 /* set branch prediction info based on __builtin_expect */
3626 if (is_builtin_expect(expression) && is_Cond(cond)) {
3627 call_argument_t *argument = expression->call.arguments->next;
3628 if (is_constant_expression(argument->expression)) {
3629 bool cnst = fold_constant_to_bool(argument->expression);
3630 cond_jmp_predicate pred;
3632 if (cnst == false) {
3633 pred = COND_JMP_PRED_FALSE;
3635 pred = COND_JMP_PRED_TRUE;
3637 set_Cond_jmp_pred(cond, pred);
3641 add_immBlock_pred(true_block, true_proj);
3642 add_immBlock_pred(false_block, false_proj);
3644 set_cur_block(NULL);
3648 static void create_variable_entity(entity_t *variable,
3649 declaration_kind_t declaration_kind,
3650 ir_type *parent_type)
3652 assert(variable->kind == ENTITY_VARIABLE);
3653 type_t *type = skip_typeref(variable->declaration.type);
3655 ident *const id = new_id_from_str(variable->base.symbol->string);
3656 ir_type *const irtype = get_ir_type(type);
3657 dbg_info *const dbgi = get_dbg_info(&variable->base.source_position);
3658 ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi);
3659 unsigned alignment = variable->declaration.alignment;
3661 set_entity_alignment(irentity, alignment);
3663 handle_decl_modifiers(irentity, variable);
3665 variable->declaration.kind = (unsigned char) declaration_kind;
3666 variable->variable.v.entity = irentity;
3667 set_entity_ld_ident(irentity, create_ld_ident(variable));
3669 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3670 set_entity_volatility(irentity, volatility_is_volatile);
3675 typedef struct type_path_entry_t type_path_entry_t;
3676 struct type_path_entry_t {
3678 ir_initializer_t *initializer;
3680 entity_t *compound_entry;
3683 typedef struct type_path_t type_path_t;
3684 struct type_path_t {
3685 type_path_entry_t *path;
3690 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3692 size_t len = ARR_LEN(path->path);
3694 for (size_t i = 0; i < len; ++i) {
3695 const type_path_entry_t *entry = & path->path[i];
3697 type_t *type = skip_typeref(entry->type);
3698 if (is_type_compound(type)) {
3699 fprintf(stderr, ".%s", entry->compound_entry->base.symbol->string);
3700 } else if (is_type_array(type)) {
3701 fprintf(stderr, "[%u]", (unsigned) entry->index);
3703 fprintf(stderr, "-INVALID-");
3706 fprintf(stderr, " (");
3707 print_type(path->top_type);
3708 fprintf(stderr, ")");
3711 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3713 size_t len = ARR_LEN(path->path);
3715 return & path->path[len-1];
3718 static type_path_entry_t *append_to_type_path(type_path_t *path)
3720 size_t len = ARR_LEN(path->path);
3721 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3723 type_path_entry_t *result = & path->path[len];
3724 memset(result, 0, sizeof(result[0]));
3728 static size_t get_compound_member_count(const compound_type_t *type)
3730 compound_t *compound = type->compound;
3731 size_t n_members = 0;
3732 entity_t *member = compound->members.entities;
3733 for ( ; member != NULL; member = member->base.next) {
3740 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3742 type_t *orig_top_type = path->top_type;
3743 type_t *top_type = skip_typeref(orig_top_type);
3745 assert(is_type_compound(top_type) || is_type_array(top_type));
3747 if (ARR_LEN(path->path) == 0) {
3750 type_path_entry_t *top = get_type_path_top(path);
3751 ir_initializer_t *initializer = top->initializer;
3752 return get_initializer_compound_value(initializer, top->index);
3756 static void descend_into_subtype(type_path_t *path)
3758 type_t *orig_top_type = path->top_type;
3759 type_t *top_type = skip_typeref(orig_top_type);
3761 assert(is_type_compound(top_type) || is_type_array(top_type));
3763 ir_initializer_t *initializer = get_initializer_entry(path);
3765 type_path_entry_t *top = append_to_type_path(path);
3766 top->type = top_type;
3770 if (is_type_compound(top_type)) {
3771 compound_t *compound = top_type->compound.compound;
3772 entity_t *entry = compound->members.entities;
3774 top->compound_entry = entry;
3776 len = get_compound_member_count(&top_type->compound);
3777 if (entry != NULL) {
3778 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3779 path->top_type = entry->declaration.type;
3782 assert(is_type_array(top_type));
3783 assert(top_type->array.size > 0);
3786 path->top_type = top_type->array.element_type;
3787 len = top_type->array.size;
3789 if (initializer == NULL
3790 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3791 initializer = create_initializer_compound(len);
3792 /* we have to set the entry at the 2nd latest path entry... */
3793 size_t path_len = ARR_LEN(path->path);
3794 assert(path_len >= 1);
3796 type_path_entry_t *entry = & path->path[path_len-2];
3797 ir_initializer_t *tinitializer = entry->initializer;
3798 set_initializer_compound_value(tinitializer, entry->index,
3802 top->initializer = initializer;
3805 static void ascend_from_subtype(type_path_t *path)
3807 type_path_entry_t *top = get_type_path_top(path);
3809 path->top_type = top->type;
3811 size_t len = ARR_LEN(path->path);
3812 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3815 static void walk_designator(type_path_t *path, const designator_t *designator)
3817 /* designators start at current object type */
3818 ARR_RESIZE(type_path_entry_t, path->path, 1);
3820 for ( ; designator != NULL; designator = designator->next) {
3821 type_path_entry_t *top = get_type_path_top(path);
3822 type_t *orig_type = top->type;
3823 type_t *type = skip_typeref(orig_type);
3825 if (designator->symbol != NULL) {
3826 assert(is_type_compound(type));
3828 symbol_t *symbol = designator->symbol;
3830 compound_t *compound = type->compound.compound;
3831 entity_t *iter = compound->members.entities;
3832 for ( ; iter != NULL; iter = iter->base.next, ++index) {
3833 if (iter->base.symbol == symbol) {
3834 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
3838 assert(iter != NULL);
3840 /* revert previous initialisations of other union elements */
3841 if (type->kind == TYPE_COMPOUND_UNION) {
3842 ir_initializer_t *initializer = top->initializer;
3843 if (initializer != NULL
3844 && get_initializer_kind(initializer) == IR_INITIALIZER_COMPOUND) {
3845 /* are we writing to a new element? */
3846 ir_initializer_t *oldi
3847 = get_initializer_compound_value(initializer, index);
3848 if (get_initializer_kind(oldi) == IR_INITIALIZER_NULL) {
3849 /* clear initializer */
3851 = get_initializer_compound_n_entries(initializer);
3852 ir_initializer_t *nulli = get_initializer_null();
3853 for (size_t i = 0; i < len; ++i) {
3854 set_initializer_compound_value(initializer, i,
3861 top->type = orig_type;
3862 top->compound_entry = iter;
3864 orig_type = iter->declaration.type;
3866 expression_t *array_index = designator->array_index;
3867 assert(designator->array_index != NULL);
3868 assert(is_type_array(type));
3870 long index = fold_constant_to_int(array_index);
3873 if (type->array.size_constant) {
3874 long array_size = type->array.size;
3875 assert(index < array_size);
3879 top->type = orig_type;
3880 top->index = (size_t) index;
3881 orig_type = type->array.element_type;
3883 path->top_type = orig_type;
3885 if (designator->next != NULL) {
3886 descend_into_subtype(path);
3890 path->invalid = false;
3893 static void advance_current_object(type_path_t *path)
3895 if (path->invalid) {
3896 /* TODO: handle this... */
3897 panic("invalid initializer in ast2firm (excessive elements)");
3900 type_path_entry_t *top = get_type_path_top(path);
3902 type_t *type = skip_typeref(top->type);
3903 if (is_type_union(type)) {
3904 /* only the first element is initialized in unions */
3905 top->compound_entry = NULL;
3906 } else if (is_type_struct(type)) {
3907 entity_t *entry = top->compound_entry;
3910 entry = entry->base.next;
3911 top->compound_entry = entry;
3912 if (entry != NULL) {
3913 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3914 path->top_type = entry->declaration.type;
3918 assert(is_type_array(type));
3921 if (!type->array.size_constant || top->index < type->array.size) {
3926 /* we're past the last member of the current sub-aggregate, try if we
3927 * can ascend in the type hierarchy and continue with another subobject */
3928 size_t len = ARR_LEN(path->path);
3931 ascend_from_subtype(path);
3932 advance_current_object(path);
3934 path->invalid = true;
3939 static ir_initializer_t *create_ir_initializer(
3940 const initializer_t *initializer, type_t *type);
3942 static ir_initializer_t *create_ir_initializer_value(
3943 const initializer_value_t *initializer)
3945 if (is_type_compound(initializer->value->base.type)) {
3946 panic("initializer creation for compounds not implemented yet");
3948 type_t *type = initializer->value->base.type;
3949 expression_t *expr = initializer->value;
3950 if (initializer_use_bitfield_basetype) {
3951 type_t *skipped = skip_typeref(type);
3952 if (skipped->kind == TYPE_BITFIELD) {
3953 /* remove the bitfield cast... */
3954 assert(expr->kind == EXPR_UNARY_CAST_IMPLICIT);
3955 expr = expr->unary.value;
3956 type = skipped->bitfield.base_type;
3959 ir_node *value = expression_to_firm(expr);
3960 ir_mode *mode = get_ir_mode_storage(type);
3961 value = create_conv(NULL, value, mode);
3962 return create_initializer_const(value);
3965 /** test wether type can be initialized by a string constant */
3966 static bool is_string_type(type_t *type)
3969 if (is_type_pointer(type)) {
3970 inner = skip_typeref(type->pointer.points_to);
3971 } else if(is_type_array(type)) {
3972 inner = skip_typeref(type->array.element_type);
3977 return is_type_integer(inner);
3980 static ir_initializer_t *create_ir_initializer_list(
3981 const initializer_list_t *initializer, type_t *type)
3984 memset(&path, 0, sizeof(path));
3985 path.top_type = type;
3986 path.path = NEW_ARR_F(type_path_entry_t, 0);
3988 descend_into_subtype(&path);
3990 for (size_t i = 0; i < initializer->len; ++i) {
3991 const initializer_t *sub_initializer = initializer->initializers[i];
3993 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3994 walk_designator(&path, sub_initializer->designator.designator);
3998 if (sub_initializer->kind == INITIALIZER_VALUE) {
3999 /* we might have to descend into types until we're at a scalar
4002 type_t *orig_top_type = path.top_type;
4003 type_t *top_type = skip_typeref(orig_top_type);
4005 if (is_type_scalar(top_type))
4007 descend_into_subtype(&path);
4009 } else if (sub_initializer->kind == INITIALIZER_STRING
4010 || sub_initializer->kind == INITIALIZER_WIDE_STRING) {
4011 /* we might have to descend into types until we're at a scalar
4014 type_t *orig_top_type = path.top_type;
4015 type_t *top_type = skip_typeref(orig_top_type);
4017 if (is_string_type(top_type))
4019 descend_into_subtype(&path);
4023 ir_initializer_t *sub_irinitializer
4024 = create_ir_initializer(sub_initializer, path.top_type);
4026 size_t path_len = ARR_LEN(path.path);
4027 assert(path_len >= 1);
4028 type_path_entry_t *entry = & path.path[path_len-1];
4029 ir_initializer_t *tinitializer = entry->initializer;
4030 set_initializer_compound_value(tinitializer, entry->index,
4033 advance_current_object(&path);
4036 assert(ARR_LEN(path.path) >= 1);
4037 ir_initializer_t *result = path.path[0].initializer;
4038 DEL_ARR_F(path.path);
4043 static ir_initializer_t *create_ir_initializer_string(
4044 const initializer_string_t *initializer, type_t *type)
4046 type = skip_typeref(type);
4048 size_t string_len = initializer->string.size;
4049 assert(type->kind == TYPE_ARRAY);
4050 assert(type->array.size_constant);
4051 size_t len = type->array.size;
4052 ir_initializer_t *irinitializer = create_initializer_compound(len);
4054 const char *string = initializer->string.begin;
4055 ir_mode *mode = get_ir_mode_storage(type->array.element_type);
4057 for (size_t i = 0; i < len; ++i) {
4062 tarval *tv = new_tarval_from_long(c, mode);
4063 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
4065 set_initializer_compound_value(irinitializer, i, char_initializer);
4068 return irinitializer;
4071 static ir_initializer_t *create_ir_initializer_wide_string(
4072 const initializer_wide_string_t *initializer, type_t *type)
4074 size_t string_len = initializer->string.size;
4075 assert(type->kind == TYPE_ARRAY);
4076 assert(type->array.size_constant);
4077 size_t len = type->array.size;
4078 ir_initializer_t *irinitializer = create_initializer_compound(len);
4080 const wchar_rep_t *string = initializer->string.begin;
4081 ir_mode *mode = get_type_mode(ir_type_wchar_t);
4083 for (size_t i = 0; i < len; ++i) {
4085 if (i < string_len) {
4088 tarval *tv = new_tarval_from_long(c, mode);
4089 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
4091 set_initializer_compound_value(irinitializer, i, char_initializer);
4094 return irinitializer;
4097 static ir_initializer_t *create_ir_initializer(
4098 const initializer_t *initializer, type_t *type)
4100 switch(initializer->kind) {
4101 case INITIALIZER_STRING:
4102 return create_ir_initializer_string(&initializer->string, type);
4104 case INITIALIZER_WIDE_STRING:
4105 return create_ir_initializer_wide_string(&initializer->wide_string,
4108 case INITIALIZER_LIST:
4109 return create_ir_initializer_list(&initializer->list, type);
4111 case INITIALIZER_VALUE:
4112 return create_ir_initializer_value(&initializer->value);
4114 case INITIALIZER_DESIGNATOR:
4115 panic("unexpected designator initializer found");
4117 panic("unknown initializer");
4120 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
4121 ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr)
4123 switch(get_initializer_kind(initializer)) {
4124 case IR_INITIALIZER_NULL: {
4125 /* NULL is undefined for dynamic initializers */
4128 case IR_INITIALIZER_CONST: {
4129 ir_node *node = get_initializer_const_value(initializer);
4130 ir_mode *mode = get_irn_mode(node);
4131 ir_type *ent_type = get_entity_type(entity);
4133 /* is it a bitfield type? */
4134 if (is_Primitive_type(ent_type) &&
4135 get_primitive_base_type(ent_type) != NULL) {
4136 bitfield_store_to_firm(dbgi, entity, base_addr, node, false);
4140 assert(get_type_mode(type) == mode);
4141 ir_node *mem = get_store();
4142 ir_node *store = new_d_Store(dbgi, mem, base_addr, node, cons_none);
4143 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4147 case IR_INITIALIZER_TARVAL: {
4148 tarval *tv = get_initializer_tarval_value(initializer);
4149 ir_mode *mode = get_tarval_mode(tv);
4150 ir_node *cnst = new_d_Const(dbgi, tv);
4151 ir_type *ent_type = get_entity_type(entity);
4153 /* is it a bitfield type? */
4154 if (is_Primitive_type(ent_type) &&
4155 get_primitive_base_type(ent_type) != NULL) {
4156 bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false);
4160 assert(get_type_mode(type) == mode);
4161 ir_node *mem = get_store();
4162 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst, cons_none);
4163 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4167 case IR_INITIALIZER_COMPOUND: {
4168 assert(is_compound_type(type));
4170 if (is_Array_type(type)) {
4171 assert(has_array_upper_bound(type, 0));
4172 n_members = get_array_upper_bound_int(type, 0);
4174 n_members = get_compound_n_members(type);
4177 if (get_initializer_compound_n_entries(initializer)
4178 != (unsigned) n_members)
4179 panic("initializer doesn't match compound type");
4181 for (int i = 0; i < n_members; ++i) {
4184 ir_entity *sub_entity;
4185 if (is_Array_type(type)) {
4186 tarval *index_tv = new_tarval_from_long(i, mode_uint);
4187 ir_node *cnst = new_d_Const(dbgi, index_tv);
4188 ir_node *in[1] = { cnst };
4189 irtype = get_array_element_type(type);
4190 sub_entity = get_array_element_entity(type);
4191 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
4194 sub_entity = get_compound_member(type, i);
4195 irtype = get_entity_type(sub_entity);
4196 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
4200 ir_initializer_t *sub_init
4201 = get_initializer_compound_value(initializer, i);
4203 create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
4210 panic("invalid IR_INITIALIZER found");
4213 static void create_dynamic_initializer(ir_initializer_t *initializer,
4214 dbg_info *dbgi, ir_entity *entity)
4216 ir_node *frame = get_irg_frame(current_ir_graph);
4217 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
4218 ir_type *type = get_entity_type(entity);
4220 create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
4223 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
4224 ir_entity *entity, type_t *type)
4226 ir_node *memory = get_store();
4227 ir_node *nomem = new_NoMem();
4228 ir_node *frame = get_irg_frame(current_ir_graph);
4229 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
4231 if (initializer->kind == INITIALIZER_VALUE) {
4232 initializer_value_t *initializer_value = &initializer->value;
4234 ir_node *value = expression_to_firm(initializer_value->value);
4235 type = skip_typeref(type);
4236 assign_value(dbgi, addr, type, value);
4240 if (!is_constant_initializer(initializer)) {
4241 bool old_initializer_use_bitfield_basetype
4242 = initializer_use_bitfield_basetype;
4243 initializer_use_bitfield_basetype = true;
4244 ir_initializer_t *irinitializer
4245 = create_ir_initializer(initializer, type);
4246 initializer_use_bitfield_basetype
4247 = old_initializer_use_bitfield_basetype;
4249 create_dynamic_initializer(irinitializer, dbgi, entity);
4253 /* create the ir_initializer */
4254 ir_graph *const old_current_ir_graph = current_ir_graph;
4255 current_ir_graph = get_const_code_irg();
4257 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
4259 assert(current_ir_graph == get_const_code_irg());
4260 current_ir_graph = old_current_ir_graph;
4262 /* create a "template" entity which is copied to the entity on the stack */
4263 ident *const id = id_unique("initializer.%u");
4264 ir_type *const irtype = get_ir_type(type);
4265 ir_type *const global_type = get_glob_type();
4266 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
4267 set_entity_ld_ident(init_entity, id);
4269 set_entity_visibility(init_entity, ir_visibility_local);
4270 add_entity_linkage(init_entity, IR_LINKAGE_CONSTANT);
4272 set_entity_initializer(init_entity, irinitializer);
4274 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
4275 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
4277 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
4278 set_store(copyb_mem);
4281 static void create_initializer_local_variable_entity(entity_t *entity)
4283 assert(entity->kind == ENTITY_VARIABLE);
4284 initializer_t *initializer = entity->variable.initializer;
4285 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4286 ir_entity *irentity = entity->variable.v.entity;
4287 type_t *type = entity->declaration.type;
4289 create_local_initializer(initializer, dbgi, irentity, type);
4292 static void create_variable_initializer(entity_t *entity)
4294 assert(entity->kind == ENTITY_VARIABLE);
4295 initializer_t *initializer = entity->variable.initializer;
4296 if (initializer == NULL)
4299 declaration_kind_t declaration_kind
4300 = (declaration_kind_t) entity->declaration.kind;
4301 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
4302 create_initializer_local_variable_entity(entity);
4306 type_t *type = entity->declaration.type;
4307 type_qualifiers_t tq = get_type_qualifier(type, true);
4309 if (initializer->kind == INITIALIZER_VALUE) {
4310 initializer_value_t *initializer_value = &initializer->value;
4311 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4313 ir_node *value = expression_to_firm(initializer_value->value);
4315 type_t *type = initializer_value->value->base.type;
4316 ir_mode *mode = get_ir_mode_storage(type);
4317 value = create_conv(dbgi, value, mode);
4318 value = do_strict_conv(dbgi, value);
4320 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
4321 set_value(entity->variable.v.value_number, value);
4323 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4325 ir_entity *irentity = entity->variable.v.entity;
4327 if (tq & TYPE_QUALIFIER_CONST) {
4328 add_entity_linkage(irentity, IR_LINKAGE_CONSTANT);
4330 set_atomic_ent_value(irentity, value);
4333 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
4334 declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4336 ir_entity *irentity = entity->variable.v.entity;
4337 ir_initializer_t *irinitializer
4338 = create_ir_initializer(initializer, type);
4340 if (tq & TYPE_QUALIFIER_CONST) {
4341 add_entity_linkage(irentity, IR_LINKAGE_CONSTANT);
4343 set_entity_initializer(irentity, irinitializer);
4347 static void create_variable_length_array(entity_t *entity)
4349 assert(entity->kind == ENTITY_VARIABLE);
4350 assert(entity->variable.initializer == NULL);
4352 entity->declaration.kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
4353 entity->variable.v.vla_base = NULL;
4355 /* TODO: record VLA somewhere so we create the free node when we leave
4359 static void allocate_variable_length_array(entity_t *entity)
4361 assert(entity->kind == ENTITY_VARIABLE);
4362 assert(entity->variable.initializer == NULL);
4363 assert(get_cur_block() != NULL);
4365 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4366 type_t *type = entity->declaration.type;
4367 ir_type *el_type = get_ir_type(type->array.element_type);
4369 /* make sure size_node is calculated */
4370 get_type_size_node(type);
4371 ir_node *elems = type->array.size_node;
4372 ir_node *mem = get_store();
4373 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
4375 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
4376 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
4379 assert(entity->declaration.kind == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
4380 entity->variable.v.vla_base = addr;
4384 * Creates a Firm local variable from a declaration.
4386 static void create_local_variable(entity_t *entity)
4388 assert(entity->kind == ENTITY_VARIABLE);
4389 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4391 bool needs_entity = entity->variable.address_taken;
4392 type_t *type = skip_typeref(entity->declaration.type);
4394 /* is it a variable length array? */
4395 if (is_type_array(type) && !type->array.size_constant) {
4396 create_variable_length_array(entity);
4398 } else if (is_type_array(type) || is_type_compound(type)) {
4399 needs_entity = true;
4400 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4401 needs_entity = true;
4405 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
4406 create_variable_entity(entity,
4407 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
4410 entity->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
4411 entity->variable.v.value_number = next_value_number_function;
4412 set_irg_loc_description(current_ir_graph, next_value_number_function,
4414 ++next_value_number_function;
4418 static void create_local_static_variable(entity_t *entity)
4420 assert(entity->kind == ENTITY_VARIABLE);
4421 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4423 type_t *type = skip_typeref(entity->declaration.type);
4424 ir_type *const var_type = entity->variable.thread_local ?
4425 get_tls_type() : get_glob_type();
4426 ir_type *const irtype = get_ir_type(type);
4427 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
4429 size_t l = strlen(entity->base.symbol->string);
4430 char buf[l + sizeof(".%u")];
4431 snprintf(buf, sizeof(buf), "%s.%%u", entity->base.symbol->string);
4432 ident *const id = id_unique(buf);
4434 ir_entity *const irentity = new_d_entity(var_type, id, irtype, dbgi);
4436 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4437 set_entity_volatility(irentity, volatility_is_volatile);
4440 entity->declaration.kind = DECLARATION_KIND_GLOBAL_VARIABLE;
4441 entity->variable.v.entity = irentity;
4443 set_entity_ld_ident(irentity, id);
4444 set_entity_visibility(irentity, ir_visibility_local);
4446 ir_graph *const old_current_ir_graph = current_ir_graph;
4447 current_ir_graph = get_const_code_irg();
4449 create_variable_initializer(entity);
4451 assert(current_ir_graph == get_const_code_irg());
4452 current_ir_graph = old_current_ir_graph;
4457 static void return_statement_to_firm(return_statement_t *statement)
4459 if (get_cur_block() == NULL)
4462 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4463 type_t *type = current_function_entity->declaration.type;
4464 ir_type *func_irtype = get_ir_type(type);
4469 if (get_method_n_ress(func_irtype) > 0) {
4470 ir_type *res_type = get_method_res_type(func_irtype, 0);
4472 if (statement->value != NULL) {
4473 ir_node *node = expression_to_firm(statement->value);
4474 if (!is_compound_type(res_type)) {
4475 type_t *type = statement->value->base.type;
4476 ir_mode *mode = get_ir_mode_storage(type);
4477 node = create_conv(dbgi, node, mode);
4478 node = do_strict_conv(dbgi, node);
4483 if (is_compound_type(res_type)) {
4486 mode = get_type_mode(res_type);
4488 in[0] = new_Unknown(mode);
4492 /* build return_value for its side effects */
4493 if (statement->value != NULL) {
4494 expression_to_firm(statement->value);
4499 ir_node *store = get_store();
4500 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
4502 ir_node *end_block = get_irg_end_block(current_ir_graph);
4503 add_immBlock_pred(end_block, ret);
4505 set_cur_block(NULL);
4508 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
4510 if (get_cur_block() == NULL)
4513 return expression_to_firm(statement->expression);
4516 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
4518 entity_t *entity = compound->scope.entities;
4519 for ( ; entity != NULL; entity = entity->base.next) {
4520 if (!is_declaration(entity))
4523 create_local_declaration(entity);
4526 ir_node *result = NULL;
4527 statement_t *statement = compound->statements;
4528 for ( ; statement != NULL; statement = statement->base.next) {
4529 if (statement->base.next == NULL
4530 && statement->kind == STATEMENT_EXPRESSION) {
4531 result = expression_statement_to_firm(
4532 &statement->expression);
4535 statement_to_firm(statement);
4541 static void create_global_variable(entity_t *entity)
4543 ir_linkage linkage = 0;
4544 ir_visibility visibility = ir_visibility_default;
4545 ir_entity *irentity;
4546 assert(entity->kind == ENTITY_VARIABLE);
4548 switch ((storage_class_tag_t)entity->declaration.storage_class) {
4549 case STORAGE_CLASS_STATIC: visibility = ir_visibility_local; break;
4550 case STORAGE_CLASS_EXTERN: visibility = ir_visibility_external; break;
4551 case STORAGE_CLASS_NONE:
4552 visibility = ir_visibility_default;
4553 /* uninitialized globals get merged in C */
4554 if (entity->variable.initializer == NULL)
4555 linkage |= IR_LINKAGE_MERGE;
4557 case STORAGE_CLASS_TYPEDEF:
4558 case STORAGE_CLASS_AUTO:
4559 case STORAGE_CLASS_REGISTER:
4560 panic("invalid storage class for global var");
4563 ir_type *var_type = entity->variable.thread_local ?
4564 get_tls_type() : get_glob_type();
4565 create_variable_entity(entity, DECLARATION_KIND_GLOBAL_VARIABLE, var_type);
4566 irentity = entity->variable.v.entity;
4567 add_entity_linkage(irentity, linkage);
4568 set_entity_visibility(irentity, visibility);
4571 static void create_local_declaration(entity_t *entity)
4573 assert(is_declaration(entity));
4575 /* construct type */
4576 (void) get_ir_type(entity->declaration.type);
4577 if (entity->base.symbol == NULL) {
4581 switch ((storage_class_tag_t) entity->declaration.storage_class) {
4582 case STORAGE_CLASS_STATIC:
4583 if (entity->kind == ENTITY_FUNCTION) {
4584 (void)get_function_entity(entity, NULL);
4586 create_local_static_variable(entity);
4589 case STORAGE_CLASS_EXTERN:
4590 if (entity->kind == ENTITY_FUNCTION) {
4591 assert(entity->function.statement == NULL);
4592 (void)get_function_entity(entity, NULL);
4594 create_global_variable(entity);
4595 create_variable_initializer(entity);
4598 case STORAGE_CLASS_NONE:
4599 case STORAGE_CLASS_AUTO:
4600 case STORAGE_CLASS_REGISTER:
4601 if (entity->kind == ENTITY_FUNCTION) {
4602 if (entity->function.statement != NULL) {
4603 ir_type *owner = get_irg_frame_type(current_ir_graph);
4604 (void)get_function_entity(entity, owner);
4605 entity->declaration.kind = DECLARATION_KIND_INNER_FUNCTION;
4606 enqueue_inner_function(entity);
4608 (void)get_function_entity(entity, NULL);
4611 create_local_variable(entity);
4614 case STORAGE_CLASS_TYPEDEF:
4617 panic("invalid storage class found");
4620 static void initialize_local_declaration(entity_t *entity)
4622 if (entity->base.symbol == NULL)
4625 // no need to emit code in dead blocks
4626 if (entity->declaration.storage_class != STORAGE_CLASS_STATIC
4627 && get_cur_block() == NULL)
4630 switch ((declaration_kind_t) entity->declaration.kind) {
4631 case DECLARATION_KIND_LOCAL_VARIABLE:
4632 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4633 create_variable_initializer(entity);
4636 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4637 allocate_variable_length_array(entity);
4640 case DECLARATION_KIND_COMPOUND_MEMBER:
4641 case DECLARATION_KIND_GLOBAL_VARIABLE:
4642 case DECLARATION_KIND_FUNCTION:
4643 case DECLARATION_KIND_INNER_FUNCTION:
4646 case DECLARATION_KIND_PARAMETER:
4647 case DECLARATION_KIND_PARAMETER_ENTITY:
4648 panic("can't initialize parameters");
4650 case DECLARATION_KIND_UNKNOWN:
4651 panic("can't initialize unknown declaration");
4653 panic("invalid declaration kind");
4656 static void declaration_statement_to_firm(declaration_statement_t *statement)
4658 entity_t *entity = statement->declarations_begin;
4662 entity_t *const last = statement->declarations_end;
4663 for ( ;; entity = entity->base.next) {
4664 if (is_declaration(entity)) {
4665 initialize_local_declaration(entity);
4666 } else if (entity->kind == ENTITY_TYPEDEF) {
4667 /* §6.7.7:3 Any array size expressions associated with variable length
4668 * array declarators are evaluated each time the declaration of the
4669 * typedef name is reached in the order of execution. */
4670 type_t *const type = skip_typeref(entity->typedefe.type);
4671 if (is_type_array(type) && type->array.is_vla)
4672 get_vla_size(&type->array);
4679 static void if_statement_to_firm(if_statement_t *statement)
4681 ir_node *cur_block = get_cur_block();
4683 ir_node *fallthrough_block = NULL;
4685 /* the true (blocks) */
4686 ir_node *true_block = NULL;
4687 if (statement->true_statement != NULL) {
4688 true_block = new_immBlock();
4689 set_cur_block(true_block);
4690 statement_to_firm(statement->true_statement);
4691 if (get_cur_block() != NULL) {
4692 ir_node *jmp = new_Jmp();
4693 if (fallthrough_block == NULL)
4694 fallthrough_block = new_immBlock();
4695 add_immBlock_pred(fallthrough_block, jmp);
4699 /* the false (blocks) */
4700 ir_node *false_block = NULL;
4701 if (statement->false_statement != NULL) {
4702 false_block = new_immBlock();
4703 set_cur_block(false_block);
4705 statement_to_firm(statement->false_statement);
4706 if (get_cur_block() != NULL) {
4707 ir_node *jmp = new_Jmp();
4708 if (fallthrough_block == NULL)
4709 fallthrough_block = new_immBlock();
4710 add_immBlock_pred(fallthrough_block, jmp);
4714 /* create the condition */
4715 if (cur_block != NULL) {
4716 if (true_block == NULL || false_block == NULL) {
4717 if (fallthrough_block == NULL)
4718 fallthrough_block = new_immBlock();
4719 if (true_block == NULL)
4720 true_block = fallthrough_block;
4721 if (false_block == NULL)
4722 false_block = fallthrough_block;
4725 set_cur_block(cur_block);
4726 create_condition_evaluation(statement->condition, true_block,
4730 mature_immBlock(true_block);
4731 if (false_block != fallthrough_block && false_block != NULL) {
4732 mature_immBlock(false_block);
4734 if (fallthrough_block != NULL) {
4735 mature_immBlock(fallthrough_block);
4738 set_cur_block(fallthrough_block);
4741 static void while_statement_to_firm(while_statement_t *statement)
4743 ir_node *jmp = NULL;
4744 if (get_cur_block() != NULL) {
4748 /* create the header block */
4749 ir_node *header_block = new_immBlock();
4751 add_immBlock_pred(header_block, jmp);
4755 ir_node *old_continue_label = continue_label;
4756 ir_node *old_break_label = break_label;
4757 continue_label = header_block;
4760 ir_node *body_block = new_immBlock();
4761 set_cur_block(body_block);
4762 statement_to_firm(statement->body);
4763 ir_node *false_block = break_label;
4765 assert(continue_label == header_block);
4766 continue_label = old_continue_label;
4767 break_label = old_break_label;
4769 if (get_cur_block() != NULL) {
4771 add_immBlock_pred(header_block, jmp);
4774 /* shortcut for while(true) */
4775 if (is_constant_expression(statement->condition)
4776 && fold_constant_to_bool(statement->condition) != 0) {
4777 set_cur_block(header_block);
4778 ir_node *header_jmp = new_Jmp();
4779 add_immBlock_pred(body_block, header_jmp);
4781 keep_alive(body_block);
4782 keep_all_memory(body_block);
4783 set_cur_block(body_block);
4785 if (false_block == NULL) {
4786 false_block = new_immBlock();
4789 /* create the condition */
4790 set_cur_block(header_block);
4792 create_condition_evaluation(statement->condition, body_block,
4796 mature_immBlock(body_block);
4797 mature_immBlock(header_block);
4798 if (false_block != NULL) {
4799 mature_immBlock(false_block);
4802 set_cur_block(false_block);
4805 static void do_while_statement_to_firm(do_while_statement_t *statement)
4807 ir_node *jmp = NULL;
4808 if (get_cur_block() != NULL) {
4812 /* create the header block */
4813 ir_node *header_block = new_immBlock();
4816 ir_node *body_block = new_immBlock();
4818 add_immBlock_pred(body_block, jmp);
4821 ir_node *old_continue_label = continue_label;
4822 ir_node *old_break_label = break_label;
4823 continue_label = header_block;
4826 set_cur_block(body_block);
4827 statement_to_firm(statement->body);
4828 ir_node *false_block = break_label;
4830 assert(continue_label == header_block);
4831 continue_label = old_continue_label;
4832 break_label = old_break_label;
4834 if (get_cur_block() != NULL) {
4835 ir_node *body_jmp = new_Jmp();
4836 add_immBlock_pred(header_block, body_jmp);
4837 mature_immBlock(header_block);
4840 if (false_block == NULL) {
4841 false_block = new_immBlock();
4844 /* create the condition */
4845 set_cur_block(header_block);
4847 create_condition_evaluation(statement->condition, body_block, false_block);
4848 mature_immBlock(body_block);
4849 mature_immBlock(header_block);
4850 mature_immBlock(false_block);
4852 set_cur_block(false_block);
4855 static void for_statement_to_firm(for_statement_t *statement)
4857 ir_node *jmp = NULL;
4859 /* create declarations */
4860 entity_t *entity = statement->scope.entities;
4861 for ( ; entity != NULL; entity = entity->base.next) {
4862 if (!is_declaration(entity))
4865 create_local_declaration(entity);
4868 if (get_cur_block() != NULL) {
4869 entity = statement->scope.entities;
4870 for ( ; entity != NULL; entity = entity->base.next) {
4871 if (!is_declaration(entity))
4874 initialize_local_declaration(entity);
4877 if (statement->initialisation != NULL) {
4878 expression_to_firm(statement->initialisation);
4885 /* create the step block */
4886 ir_node *const step_block = new_immBlock();
4887 set_cur_block(step_block);
4888 if (statement->step != NULL) {
4889 expression_to_firm(statement->step);
4891 ir_node *const step_jmp = new_Jmp();
4893 /* create the header block */
4894 ir_node *const header_block = new_immBlock();
4895 set_cur_block(header_block);
4897 add_immBlock_pred(header_block, jmp);
4899 add_immBlock_pred(header_block, step_jmp);
4901 /* the false block */
4902 ir_node *const false_block = new_immBlock();
4905 ir_node *body_block;
4906 if (statement->body != NULL) {
4907 ir_node *const old_continue_label = continue_label;
4908 ir_node *const old_break_label = break_label;
4909 continue_label = step_block;
4910 break_label = false_block;
4912 body_block = new_immBlock();
4913 set_cur_block(body_block);
4914 statement_to_firm(statement->body);
4916 assert(continue_label == step_block);
4917 assert(break_label == false_block);
4918 continue_label = old_continue_label;
4919 break_label = old_break_label;
4921 if (get_cur_block() != NULL) {
4923 add_immBlock_pred(step_block, jmp);
4926 body_block = step_block;
4929 /* create the condition */
4930 set_cur_block(header_block);
4931 if (statement->condition != NULL) {
4932 create_condition_evaluation(statement->condition, body_block,
4935 keep_alive(header_block);
4936 keep_all_memory(header_block);
4938 add_immBlock_pred(body_block, jmp);
4941 mature_immBlock(body_block);
4942 mature_immBlock(false_block);
4943 mature_immBlock(step_block);
4944 mature_immBlock(header_block);
4945 mature_immBlock(false_block);
4947 set_cur_block(false_block);
4950 static void create_jump_statement(const statement_t *statement,
4951 ir_node *target_block)
4953 if (get_cur_block() == NULL)
4956 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4957 ir_node *jump = new_d_Jmp(dbgi);
4958 add_immBlock_pred(target_block, jump);
4960 set_cur_block(NULL);
4963 static ir_node *get_break_label(void)
4965 if (break_label == NULL) {
4966 break_label = new_immBlock();
4971 static void switch_statement_to_firm(switch_statement_t *statement)
4973 ir_node *first_block = NULL;
4974 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4975 ir_node *cond = NULL;
4977 if (get_cur_block() != NULL) {
4978 ir_node *expression = expression_to_firm(statement->expression);
4979 cond = new_d_Cond(dbgi, expression);
4980 first_block = get_cur_block();
4983 set_cur_block(NULL);
4985 ir_node *const old_switch_cond = current_switch_cond;
4986 ir_node *const old_break_label = break_label;
4987 const bool old_saw_default_label = saw_default_label;
4988 saw_default_label = false;
4989 current_switch_cond = cond;
4991 switch_statement_t *const old_switch = current_switch;
4992 current_switch = statement;
4994 /* determine a free number for the default label */
4995 unsigned long num_cases = 0;
4997 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4998 if (l->expression == NULL) {
5002 if (l->last_case >= l->first_case)
5003 num_cases += l->last_case - l->first_case + 1;
5004 if (l->last_case > def_nr)
5005 def_nr = l->last_case;
5008 if (def_nr == INT_MAX) {
5009 /* Bad: an overflow will occur, we cannot be sure that the
5010 * maximum + 1 is a free number. Scan the values a second
5011 * time to find a free number.
5013 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
5015 memset(bits, 0, (num_cases + 7) >> 3);
5016 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
5017 if (l->expression == NULL) {
5021 unsigned long start = l->first_case > 0 ? (unsigned long)l->first_case : 0;
5022 if (start < num_cases && l->last_case >= 0) {
5023 unsigned long end = (unsigned long)l->last_case < num_cases ?
5024 (unsigned long)l->last_case : num_cases - 1;
5025 for (unsigned long cns = start; cns <= end; ++cns) {
5026 bits[cns >> 3] |= (1 << (cns & 7));
5030 /* We look at the first num_cases constants:
5031 * Either they are dense, so we took the last (num_cases)
5032 * one, or they are not dense, so we will find one free
5036 for (i = 0; i < num_cases; ++i)
5037 if ((bits[i >> 3] & (1 << (i & 7))) == 0)
5045 statement->default_proj_nr = def_nr;
5047 if (statement->body != NULL) {
5048 statement_to_firm(statement->body);
5051 if (get_cur_block() != NULL) {
5052 ir_node *jmp = new_Jmp();
5053 add_immBlock_pred(get_break_label(), jmp);
5056 if (!saw_default_label && first_block != NULL) {
5057 set_cur_block(first_block);
5058 ir_node *const proj = new_d_defaultProj(dbgi, cond,
5059 statement->default_proj_nr);
5060 add_immBlock_pred(get_break_label(), proj);
5063 if (break_label != NULL) {
5064 mature_immBlock(break_label);
5066 set_cur_block(break_label);
5068 assert(current_switch_cond == cond);
5069 current_switch = old_switch;
5070 current_switch_cond = old_switch_cond;
5071 break_label = old_break_label;
5072 saw_default_label = old_saw_default_label;
5075 static void case_label_to_firm(const case_label_statement_t *statement)
5077 if (statement->is_empty_range)
5080 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5082 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
5085 ir_node *block = new_immBlock();
5087 if (current_switch_cond != NULL) {
5088 set_cur_block(get_nodes_block(current_switch_cond));
5089 if (statement->expression != NULL) {
5090 long pn = statement->first_case;
5091 long end_pn = statement->last_case;
5092 assert(pn <= end_pn);
5093 /* create jumps for all cases in the given range */
5095 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
5096 add_immBlock_pred(block, proj);
5097 } while (pn++ < end_pn);
5099 saw_default_label = true;
5100 proj = new_d_defaultProj(dbgi, current_switch_cond,
5101 current_switch->default_proj_nr);
5103 add_immBlock_pred(block, proj);
5107 if (fallthrough != NULL) {
5108 add_immBlock_pred(block, fallthrough);
5110 mature_immBlock(block);
5111 set_cur_block(block);
5113 if (statement->statement != NULL) {
5114 statement_to_firm(statement->statement);
5118 static void label_to_firm(const label_statement_t *statement)
5120 ir_node *block = get_label_block(statement->label);
5122 if (get_cur_block() != NULL) {
5123 ir_node *jmp = new_Jmp();
5124 add_immBlock_pred(block, jmp);
5127 set_cur_block(block);
5129 keep_all_memory(block);
5131 if (statement->statement != NULL) {
5132 statement_to_firm(statement->statement);
5136 static void goto_to_firm(const goto_statement_t *statement)
5138 if (get_cur_block() == NULL)
5141 if (statement->expression) {
5142 ir_node *irn = expression_to_firm(statement->expression);
5143 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5144 ir_node *ijmp = new_d_IJmp(dbgi, irn);
5146 set_irn_link(ijmp, ijmp_list);
5149 ir_node *block = get_label_block(statement->label);
5150 ir_node *jmp = new_Jmp();
5151 add_immBlock_pred(block, jmp);
5153 set_cur_block(NULL);
5156 static void asm_statement_to_firm(const asm_statement_t *statement)
5158 bool needs_memory = false;
5160 if (statement->is_volatile) {
5161 needs_memory = true;
5164 size_t n_clobbers = 0;
5165 asm_clobber_t *clobber = statement->clobbers;
5166 for ( ; clobber != NULL; clobber = clobber->next) {
5167 const char *clobber_str = clobber->clobber.begin;
5169 if (!be_is_valid_clobber(clobber_str)) {
5170 errorf(&statement->base.source_position,
5171 "invalid clobber '%s' specified", clobber->clobber);
5175 if (strcmp(clobber_str, "memory") == 0) {
5176 needs_memory = true;
5180 ident *id = new_id_from_str(clobber_str);
5181 obstack_ptr_grow(&asm_obst, id);
5184 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
5185 ident **clobbers = NULL;
5186 if (n_clobbers > 0) {
5187 clobbers = obstack_finish(&asm_obst);
5190 size_t n_inputs = 0;
5191 asm_argument_t *argument = statement->inputs;
5192 for ( ; argument != NULL; argument = argument->next)
5194 size_t n_outputs = 0;
5195 argument = statement->outputs;
5196 for ( ; argument != NULL; argument = argument->next)
5199 unsigned next_pos = 0;
5201 ir_node *ins[n_inputs + n_outputs + 1];
5204 ir_asm_constraint tmp_in_constraints[n_outputs];
5206 const expression_t *out_exprs[n_outputs];
5207 ir_node *out_addrs[n_outputs];
5208 size_t out_size = 0;
5210 argument = statement->outputs;
5211 for ( ; argument != NULL; argument = argument->next) {
5212 const char *constraints = argument->constraints.begin;
5213 asm_constraint_flags_t asm_flags
5214 = be_parse_asm_constraints(constraints);
5216 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5217 warningf(&statement->base.source_position,
5218 "some constraints in '%s' are not supported", constraints);
5220 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5221 errorf(&statement->base.source_position,
5222 "some constraints in '%s' are invalid", constraints);
5225 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
5226 errorf(&statement->base.source_position,
5227 "no write flag specified for output constraints '%s'",
5232 unsigned pos = next_pos++;
5233 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5234 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5235 expression_t *expr = argument->expression;
5236 ir_node *addr = expression_to_addr(expr);
5237 /* in+output, construct an artifical same_as constraint on the
5239 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
5241 ir_node *value = get_value_from_lvalue(expr, addr);
5243 snprintf(buf, sizeof(buf), "%u", (unsigned) out_size);
5245 ir_asm_constraint constraint;
5246 constraint.pos = pos;
5247 constraint.constraint = new_id_from_str(buf);
5248 constraint.mode = get_ir_mode_storage(expr->base.type);
5249 tmp_in_constraints[in_size] = constraint;
5250 ins[in_size] = value;
5255 out_exprs[out_size] = expr;
5256 out_addrs[out_size] = addr;
5258 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5259 /* pure memory ops need no input (but we have to make sure we
5260 * attach to the memory) */
5261 assert(! (asm_flags &
5262 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5263 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5264 needs_memory = true;
5266 /* we need to attach the address to the inputs */
5267 expression_t *expr = argument->expression;
5269 ir_asm_constraint constraint;
5270 constraint.pos = pos;
5271 constraint.constraint = new_id_from_str(constraints);
5272 constraint.mode = NULL;
5273 tmp_in_constraints[in_size] = constraint;
5275 ins[in_size] = expression_to_addr(expr);
5279 errorf(&statement->base.source_position,
5280 "only modifiers but no place set in constraints '%s'",
5285 ir_asm_constraint constraint;
5286 constraint.pos = pos;
5287 constraint.constraint = new_id_from_str(constraints);
5288 constraint.mode = get_ir_mode_storage(argument->expression->base.type);
5290 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5292 assert(obstack_object_size(&asm_obst)
5293 == out_size * sizeof(ir_asm_constraint));
5294 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
5297 obstack_grow(&asm_obst, tmp_in_constraints,
5298 in_size * sizeof(tmp_in_constraints[0]));
5299 /* find and count input and output arguments */
5300 argument = statement->inputs;
5301 for ( ; argument != NULL; argument = argument->next) {
5302 const char *constraints = argument->constraints.begin;
5303 asm_constraint_flags_t asm_flags
5304 = be_parse_asm_constraints(constraints);
5306 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5307 errorf(&statement->base.source_position,
5308 "some constraints in '%s' are not supported", constraints);
5311 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5312 errorf(&statement->base.source_position,
5313 "some constraints in '%s' are invalid", constraints);
5316 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
5317 errorf(&statement->base.source_position,
5318 "write flag specified for input constraints '%s'",
5324 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5325 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5326 /* we can treat this as "normal" input */
5327 input = expression_to_firm(argument->expression);
5328 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5329 /* pure memory ops need no input (but we have to make sure we
5330 * attach to the memory) */
5331 assert(! (asm_flags &
5332 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5333 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5334 needs_memory = true;
5335 input = expression_to_addr(argument->expression);
5337 errorf(&statement->base.source_position,
5338 "only modifiers but no place set in constraints '%s'",
5343 ir_asm_constraint constraint;
5344 constraint.pos = next_pos++;
5345 constraint.constraint = new_id_from_str(constraints);
5346 constraint.mode = get_irn_mode(input);
5348 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5349 ins[in_size++] = input;
5353 ir_asm_constraint constraint;
5354 constraint.pos = next_pos++;
5355 constraint.constraint = new_id_from_str("");
5356 constraint.mode = mode_M;
5358 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5359 ins[in_size++] = get_store();
5362 assert(obstack_object_size(&asm_obst)
5363 == in_size * sizeof(ir_asm_constraint));
5364 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
5366 /* create asm node */
5367 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5369 ident *asm_text = new_id_from_str(statement->asm_text.begin);
5371 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
5372 out_size, output_constraints,
5373 n_clobbers, clobbers, asm_text);
5375 if (statement->is_volatile) {
5376 set_irn_pinned(node, op_pin_state_pinned);
5378 set_irn_pinned(node, op_pin_state_floats);
5381 /* create output projs & connect them */
5383 ir_node *projm = new_Proj(node, mode_M, out_size+1);
5388 for (i = 0; i < out_size; ++i) {
5389 const expression_t *out_expr = out_exprs[i];
5391 ir_mode *mode = get_ir_mode_storage(out_expr->base.type);
5392 ir_node *proj = new_Proj(node, mode, pn);
5393 ir_node *addr = out_addrs[i];
5395 set_value_for_expression_addr(out_expr, proj, addr);
5399 static void ms_try_statement_to_firm(ms_try_statement_t *statement)
5401 statement_to_firm(statement->try_statement);
5402 warningf(&statement->base.source_position, "structured exception handling ignored");
5405 static void leave_statement_to_firm(leave_statement_t *statement)
5407 errorf(&statement->base.source_position, "__leave not supported yet");
5411 * Transform a statement.
5413 static void statement_to_firm(statement_t *statement)
5416 assert(!statement->base.transformed);
5417 statement->base.transformed = true;
5420 switch (statement->kind) {
5421 case STATEMENT_INVALID:
5422 panic("invalid statement found");
5423 case STATEMENT_EMPTY:
5426 case STATEMENT_COMPOUND:
5427 compound_statement_to_firm(&statement->compound);
5429 case STATEMENT_RETURN:
5430 return_statement_to_firm(&statement->returns);
5432 case STATEMENT_EXPRESSION:
5433 expression_statement_to_firm(&statement->expression);
5436 if_statement_to_firm(&statement->ifs);
5438 case STATEMENT_WHILE:
5439 while_statement_to_firm(&statement->whiles);
5441 case STATEMENT_DO_WHILE:
5442 do_while_statement_to_firm(&statement->do_while);
5444 case STATEMENT_DECLARATION:
5445 declaration_statement_to_firm(&statement->declaration);
5447 case STATEMENT_BREAK:
5448 create_jump_statement(statement, get_break_label());
5450 case STATEMENT_CONTINUE:
5451 create_jump_statement(statement, continue_label);
5453 case STATEMENT_SWITCH:
5454 switch_statement_to_firm(&statement->switchs);
5456 case STATEMENT_CASE_LABEL:
5457 case_label_to_firm(&statement->case_label);
5460 for_statement_to_firm(&statement->fors);
5462 case STATEMENT_LABEL:
5463 label_to_firm(&statement->label);
5465 case STATEMENT_GOTO:
5466 goto_to_firm(&statement->gotos);
5469 asm_statement_to_firm(&statement->asms);
5471 case STATEMENT_MS_TRY:
5472 ms_try_statement_to_firm(&statement->ms_try);
5474 case STATEMENT_LEAVE:
5475 leave_statement_to_firm(&statement->leave);
5478 panic("statement not implemented");
5481 static int count_local_variables(const entity_t *entity,
5482 const entity_t *const last)
5485 entity_t const *const end = last != NULL ? last->base.next : NULL;
5486 for (; entity != end; entity = entity->base.next) {
5490 if (entity->kind == ENTITY_VARIABLE) {
5491 type = skip_typeref(entity->declaration.type);
5492 address_taken = entity->variable.address_taken;
5493 } else if (entity->kind == ENTITY_PARAMETER) {
5494 type = skip_typeref(entity->declaration.type);
5495 address_taken = entity->parameter.address_taken;
5500 if (!address_taken && is_type_scalar(type))
5506 static void count_local_variables_in_stmt(statement_t *stmt, void *const env)
5508 int *const count = env;
5510 switch (stmt->kind) {
5511 case STATEMENT_DECLARATION: {
5512 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5513 *count += count_local_variables(decl_stmt->declarations_begin,
5514 decl_stmt->declarations_end);
5519 *count += count_local_variables(stmt->fors.scope.entities, NULL);
5528 * Return the number of local (alias free) variables used by a function.
5530 static int get_function_n_local_vars(entity_t *entity)
5532 const function_t *function = &entity->function;
5535 /* count parameters */
5536 count += count_local_variables(function->parameters.entities, NULL);
5538 /* count local variables declared in body */
5539 walk_statements(function->statement, count_local_variables_in_stmt, &count);
5544 * Build Firm code for the parameters of a function.
5546 static void initialize_function_parameters(entity_t *entity)
5548 assert(entity->kind == ENTITY_FUNCTION);
5549 ir_graph *irg = current_ir_graph;
5550 ir_node *args = get_irg_args(irg);
5551 ir_node *start_block = get_irg_start_block(irg);
5552 ir_type *function_irtype = get_ir_type(entity->declaration.type);
5553 int first_param_nr = 0;
5555 if (entity->function.need_closure) {
5556 /* add an extra parameter for the static link */
5557 entity->function.static_link = new_r_Proj(start_block, args, mode_P_data, 0);
5562 entity_t *parameter = entity->function.parameters.entities;
5563 for ( ; parameter != NULL; parameter = parameter->base.next, ++n) {
5564 if (parameter->kind != ENTITY_PARAMETER)
5567 assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN);
5568 type_t *type = skip_typeref(parameter->declaration.type);
5570 bool needs_entity = parameter->parameter.address_taken;
5571 assert(!is_type_array(type));
5572 if (is_type_compound(type)) {
5573 needs_entity = true;
5577 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5578 ident *id = new_id_from_str(parameter->base.symbol->string);
5579 set_entity_ident(entity, id);
5581 parameter->declaration.kind
5582 = DECLARATION_KIND_PARAMETER_ENTITY;
5583 parameter->parameter.v.entity = entity;
5587 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5588 ir_mode *param_mode = get_type_mode(param_irtype);
5590 long pn = n + first_param_nr;
5591 ir_node *value = new_r_Proj(start_block, args, param_mode, pn);
5593 ir_mode *mode = get_ir_mode_storage(type);
5594 value = create_conv(NULL, value, mode);
5595 value = do_strict_conv(NULL, value);
5597 parameter->declaration.kind = DECLARATION_KIND_PARAMETER;
5598 parameter->parameter.v.value_number = next_value_number_function;
5599 set_irg_loc_description(current_ir_graph, next_value_number_function,
5601 ++next_value_number_function;
5603 set_value(parameter->parameter.v.value_number, value);
5608 * Handle additional decl modifiers for IR-graphs
5610 * @param irg the IR-graph
5611 * @param dec_modifiers additional modifiers
5613 static void handle_decl_modifier_irg(ir_graph_ptr irg,
5614 decl_modifiers_t decl_modifiers)
5616 if (decl_modifiers & DM_RETURNS_TWICE) {
5617 /* TRUE if the declaration includes __attribute__((returns_twice)) */
5618 set_irg_additional_property(irg, mtp_property_returns_twice);
5620 if (decl_modifiers & DM_NORETURN) {
5621 /* TRUE if the declaration includes the Microsoft
5622 __declspec(noreturn) specifier. */
5623 set_irg_additional_property(irg, mtp_property_noreturn);
5625 if (decl_modifiers & DM_NOTHROW) {
5626 /* TRUE if the declaration includes the Microsoft
5627 __declspec(nothrow) specifier. */
5628 set_irg_additional_property(irg, mtp_property_nothrow);
5630 if (decl_modifiers & DM_NAKED) {
5631 /* TRUE if the declaration includes the Microsoft
5632 __declspec(naked) specifier. */
5633 set_irg_additional_property(irg, mtp_property_naked);
5635 if (decl_modifiers & DM_FORCEINLINE) {
5636 /* TRUE if the declaration includes the
5637 Microsoft __forceinline specifier. */
5638 set_irg_inline_property(irg, irg_inline_forced);
5640 if (decl_modifiers & DM_NOINLINE) {
5641 /* TRUE if the declaration includes the Microsoft
5642 __declspec(noinline) specifier. */
5643 set_irg_inline_property(irg, irg_inline_forbidden);
5647 static void add_function_pointer(ir_type *segment, ir_entity *method,
5648 const char *unique_template)
5650 ir_type *method_type = get_entity_type(method);
5651 ir_type *ptr_type = new_type_pointer(method_type);
5653 ident *ide = id_unique(unique_template);
5654 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5655 ir_graph *irg = get_const_code_irg();
5656 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5659 set_entity_compiler_generated(ptr, 1);
5660 set_entity_visibility(ptr, ir_visibility_local);
5661 add_entity_linkage(ptr, IR_LINKAGE_CONSTANT|IR_LINKAGE_HIDDEN_USER);
5662 set_atomic_ent_value(ptr, val);
5666 * Generate possible IJmp branches to a given label block.
5668 static void gen_ijmp_branches(ir_node *block)
5671 for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) {
5672 add_immBlock_pred(block, ijmp);
5677 * Create code for a function and all inner functions.
5679 * @param entity the function entity
5681 static void create_function(entity_t *entity)
5683 assert(entity->kind == ENTITY_FUNCTION);
5684 ir_entity *function_entity = get_function_entity(entity, current_outer_frame);
5686 if (entity->function.statement == NULL)
5689 if (is_main(entity) && firm_opt.os_support == OS_SUPPORT_MINGW) {
5690 prepare_main_collect2(entity);
5693 inner_functions = NULL;
5694 current_trampolines = NULL;
5696 if (entity->declaration.modifiers & DM_CONSTRUCTOR) {
5697 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5698 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5700 if (entity->declaration.modifiers & DM_DESTRUCTOR) {
5701 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5702 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5705 current_function_entity = entity;
5706 current_function_name = NULL;
5707 current_funcsig = NULL;
5709 assert(all_labels == NULL);
5710 all_labels = NEW_ARR_F(label_t *, 0);
5713 int n_local_vars = get_function_n_local_vars(entity);
5714 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5716 ir_graph *old_current_function = current_function;
5717 current_function = irg;
5719 set_irg_fp_model(irg, firm_opt.fp_model);
5720 tarval_enable_fp_ops(1);
5721 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5723 ir_node *first_block = get_cur_block();
5725 /* set inline flags */
5726 if (entity->function.is_inline)
5727 set_irg_inline_property(irg, irg_inline_recomended);
5728 handle_decl_modifier_irg(irg, entity->declaration.modifiers);
5730 next_value_number_function = 0;
5731 initialize_function_parameters(entity);
5732 current_static_link = entity->function.static_link;
5734 statement_to_firm(entity->function.statement);
5736 ir_node *end_block = get_irg_end_block(irg);
5738 /* do we have a return statement yet? */
5739 if (get_cur_block() != NULL) {
5740 type_t *type = skip_typeref(entity->declaration.type);
5741 assert(is_type_function(type));
5742 const function_type_t *func_type = &type->function;
5743 const type_t *return_type
5744 = skip_typeref(func_type->return_type);
5747 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5748 ret = new_Return(get_store(), 0, NULL);
5751 if (is_type_scalar(return_type)) {
5752 mode = get_ir_mode_storage(func_type->return_type);
5758 /* §5.1.2.2.3 main implicitly returns 0 */
5759 if (is_main(entity)) {
5760 in[0] = new_Const(get_mode_null(mode));
5762 in[0] = new_Unknown(mode);
5764 ret = new_Return(get_store(), 1, in);
5766 add_immBlock_pred(end_block, ret);
5769 bool has_computed_gotos = false;
5770 for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
5771 label_t *label = all_labels[i];
5772 if (label->address_taken) {
5773 gen_ijmp_branches(label->block);
5774 has_computed_gotos = true;
5776 mature_immBlock(label->block);
5778 if (has_computed_gotos) {
5779 /* if we have computed goto's in the function, we cannot inline it */
5780 if (get_irg_inline_property(irg) >= irg_inline_recomended) {
5781 warningf(&entity->base.source_position,
5782 "function '%Y' can never be inlined because it contains a computed goto",
5783 entity->base.symbol);
5785 set_irg_inline_property(irg, irg_inline_forbidden);
5788 DEL_ARR_F(all_labels);
5791 mature_immBlock(first_block);
5792 mature_immBlock(end_block);
5794 irg_finalize_cons(irg);
5796 /* finalize the frame type */
5797 ir_type *frame_type = get_irg_frame_type(irg);
5798 int n = get_compound_n_members(frame_type);
5801 for (int i = 0; i < n; ++i) {
5802 ir_entity *entity = get_compound_member(frame_type, i);
5803 ir_type *entity_type = get_entity_type(entity);
5805 int align = get_type_alignment_bytes(entity_type);
5806 if (align > align_all)
5810 misalign = offset % align;
5812 offset += align - misalign;
5816 set_entity_offset(entity, offset);
5817 offset += get_type_size_bytes(entity_type);
5819 set_type_size_bytes(frame_type, offset);
5820 set_type_alignment_bytes(frame_type, align_all);
5823 current_function = old_current_function;
5825 if (current_trampolines != NULL) {
5826 DEL_ARR_F(current_trampolines);
5827 current_trampolines = NULL;
5830 /* create inner functions if any */
5831 entity_t **inner = inner_functions;
5832 if (inner != NULL) {
5833 ir_type *rem_outer_frame = current_outer_frame;
5834 current_outer_frame = get_irg_frame_type(current_ir_graph);
5835 ir_type *rem_outer_value_type = current_outer_value_type;
5836 current_outer_value_type = get_irg_value_param_type(current_ir_graph);
5837 for (int i = ARR_LEN(inner) - 1; i >= 0; --i) {
5838 create_function(inner[i]);
5842 current_outer_value_type = rem_outer_value_type;
5843 current_outer_frame = rem_outer_frame;
5847 static void scope_to_firm(scope_t *scope)
5849 /* first pass: create declarations */
5850 entity_t *entity = scope->entities;
5851 for ( ; entity != NULL; entity = entity->base.next) {
5852 if (entity->base.symbol == NULL)
5855 if (entity->kind == ENTITY_FUNCTION) {
5856 if (entity->function.btk != bk_none) {
5857 /* builtins have no representation */
5860 (void)get_function_entity(entity, NULL);
5861 } else if (entity->kind == ENTITY_VARIABLE) {
5862 create_global_variable(entity);
5863 } else if (entity->kind == ENTITY_NAMESPACE) {
5864 scope_to_firm(&entity->namespacee.members);
5868 /* second pass: create code/initializers */
5869 entity = scope->entities;
5870 for ( ; entity != NULL; entity = entity->base.next) {
5871 if (entity->base.symbol == NULL)
5874 if (entity->kind == ENTITY_FUNCTION) {
5875 if (entity->function.btk != bk_none) {
5876 /* builtins have no representation */
5879 create_function(entity);
5880 } else if (entity->kind == ENTITY_VARIABLE) {
5881 assert(entity->declaration.kind
5882 == DECLARATION_KIND_GLOBAL_VARIABLE);
5883 current_ir_graph = get_const_code_irg();
5884 create_variable_initializer(entity);
5889 void init_ast2firm(void)
5891 obstack_init(&asm_obst);
5892 init_atomic_modes();
5894 ir_set_debug_retrieve(dbg_retrieve);
5895 ir_set_type_debug_retrieve(dbg_print_type_dbg_info);
5897 /* OS option must be set to the backend */
5898 switch (firm_opt.os_support) {
5899 case OS_SUPPORT_MINGW:
5900 create_ld_ident = create_name_win32;
5902 case OS_SUPPORT_LINUX:
5903 create_ld_ident = create_name_linux_elf;
5905 case OS_SUPPORT_MACHO:
5906 create_ld_ident = create_name_macho;
5909 panic("unexpected OS support mode");
5912 /* create idents for all known runtime functions */
5913 for (size_t i = 0; i < lengthof(rts_data); ++i) {
5914 rts_idents[i] = new_id_from_str(rts_data[i].name);
5917 entitymap_init(&entitymap);
5920 static void init_ir_types(void)
5922 static int ir_types_initialized = 0;
5923 if (ir_types_initialized)
5925 ir_types_initialized = 1;
5927 ir_type_int = get_ir_type(type_int);
5928 ir_type_char = get_ir_type(type_char);
5929 ir_type_const_char = get_ir_type(type_const_char);
5930 ir_type_wchar_t = get_ir_type(type_wchar_t);
5931 ir_type_void = get_ir_type(type_void);
5933 be_params = be_get_backend_param();
5934 mode_float_arithmetic = be_params->mode_float_arithmetic;
5936 stack_param_align = be_params->stack_param_align;
5939 void exit_ast2firm(void)
5941 entitymap_destroy(&entitymap);
5942 obstack_free(&asm_obst, NULL);
5945 static void global_asm_to_firm(statement_t *s)
5947 for (; s != NULL; s = s->base.next) {
5948 assert(s->kind == STATEMENT_ASM);
5950 char const *const text = s->asms.asm_text.begin;
5951 size_t size = s->asms.asm_text.size;
5953 /* skip the last \0 */
5954 if (text[size - 1] == '\0')
5957 ident *const id = new_id_from_chars(text, size);
5962 void translation_unit_to_firm(translation_unit_t *unit)
5964 /* just to be sure */
5965 continue_label = NULL;
5967 current_switch_cond = NULL;
5968 current_translation_unit = unit;
5972 scope_to_firm(&unit->scope);
5973 global_asm_to_firm(unit->global_asm);
5975 current_ir_graph = NULL;
5976 current_translation_unit = NULL;