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 set_entity_stickyness(irentity, stickyness_sticky);
907 static bool is_main(entity_t *entity)
909 static symbol_t *sym_main = NULL;
910 if (sym_main == NULL) {
911 sym_main = symbol_table_insert("main");
914 if (entity->base.symbol != sym_main)
916 /* must be in outermost scope */
917 if (entity->base.parent_scope != ¤t_translation_unit->scope)
924 * Creates an entity representing a function.
926 * @param declaration the function declaration
927 * @param owner_type the owner type of this function, NULL
928 * for global functions
930 static ir_entity *get_function_entity(entity_t *entity, ir_type *owner_type)
932 assert(entity->kind == ENTITY_FUNCTION);
933 if (entity->function.irentity != NULL) {
934 return entity->function.irentity;
937 if (is_main(entity)) {
938 /* force main to C linkage */
939 type_t *type = entity->declaration.type;
940 assert(is_type_function(type));
941 if (type->function.linkage != LINKAGE_C) {
942 type_t *new_type = duplicate_type(type);
943 new_type->function.linkage = LINKAGE_C;
944 type = identify_new_type(new_type);
945 entity->declaration.type = type;
949 symbol_t *symbol = entity->base.symbol;
950 ident *id = new_id_from_str(symbol->string);
953 /* already an entity defined? */
954 ir_entity *irentity = entitymap_get(&entitymap, symbol);
955 bool const has_body = entity->function.statement != NULL;
956 if (irentity != NULL) {
957 if (get_entity_visibility(irentity) == visibility_external_allocated
959 set_entity_visibility(irentity, visibility_external_visible);
964 ir_type *ir_type_method;
965 if (entity->function.need_closure)
966 ir_type_method = create_method_type(&entity->declaration.type->function, true);
968 ir_type_method = get_ir_type(entity->declaration.type);
970 bool nested_function = false;
971 if (owner_type == NULL)
972 owner_type = get_glob_type();
974 nested_function = true;
976 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
977 irentity = new_d_entity(owner_type, id, ir_type_method, dbgi);
981 ld_id = id_unique("inner.%u");
983 ld_id = create_ld_ident(entity);
984 set_entity_ld_ident(irentity, ld_id);
986 handle_decl_modifiers(irentity, entity);
988 if (! nested_function) {
989 /* static inline => local
990 * extern inline => local
991 * inline without definition => local
992 * inline with definition => external_visible */
993 storage_class_tag_t const storage_class
994 = (storage_class_tag_t) entity->declaration.storage_class;
995 bool const is_inline = entity->function.is_inline;
997 if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
998 set_entity_visibility(irentity, visibility_external_visible);
999 } else if (storage_class == STORAGE_CLASS_STATIC ||
1000 (is_inline && has_body)) {
1002 /* this entity was declared, but is defined nowhere */
1003 set_entity_peculiarity(irentity, peculiarity_description);
1005 set_entity_visibility(irentity, visibility_local);
1006 } else if (has_body) {
1007 set_entity_visibility(irentity, visibility_external_visible);
1009 set_entity_visibility(irentity, visibility_external_allocated);
1012 /* nested functions are always local */
1013 set_entity_visibility(irentity, visibility_local);
1015 set_entity_allocation(irentity, allocation_static);
1017 /* We should check for file scope here, but as long as we compile C only
1018 this is not needed. */
1019 if (! firm_opt.freestanding && !has_body) {
1020 /* check for a known runtime function */
1021 for (size_t i = 0; i < lengthof(rts_data); ++i) {
1022 if (id != rts_idents[i])
1025 /* ignore those rts functions not necessary needed for current mode */
1026 if ((c_mode & rts_data[i].flags) == 0)
1028 assert(rts_entities[rts_data[i].id] == NULL);
1029 rts_entities[rts_data[i].id] = irentity;
1033 entitymap_insert(&entitymap, symbol, irentity);
1036 entity->declaration.kind = DECLARATION_KIND_FUNCTION;
1037 entity->function.irentity = irentity;
1042 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1044 ir_mode *value_mode = get_irn_mode(value);
1046 if (value_mode == dest_mode || is_Bad(value))
1049 if (dest_mode == mode_b) {
1050 ir_node *zero = new_Const(get_mode_null(value_mode));
1051 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1052 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1056 return new_d_Conv(dbgi, value, dest_mode);
1060 * Creates a Const node representing a constant.
1062 static ir_node *const_to_firm(const const_expression_t *cnst)
1064 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1065 type_t *type = skip_typeref(cnst->base.type);
1066 ir_mode *mode = get_ir_mode_storage(type);
1071 if (mode_is_float(mode)) {
1072 tv = new_tarval_from_double(cnst->v.float_value, mode);
1074 if (mode_is_signed(mode)) {
1075 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1077 len = snprintf(buf, sizeof(buf), "%llu",
1078 (unsigned long long) cnst->v.int_value);
1080 tv = new_tarval_from_str(buf, len, mode);
1083 ir_node *res = new_d_Const(dbgi, tv);
1084 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
1085 return create_conv(dbgi, res, mode_arith);
1089 * Creates a Const node representing a character constant.
1091 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1093 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1094 ir_mode *mode = get_ir_mode_arithmetic(cnst->base.type);
1097 size_t const size = cnst->v.character.size;
1098 if (size == 1 && char_is_signed) {
1099 v = (signed char)cnst->v.character.begin[0];
1102 for (size_t i = 0; i < size; ++i) {
1103 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1107 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1108 tarval *tv = new_tarval_from_str(buf, len, mode);
1110 return new_d_Const(dbgi, tv);
1114 * Creates a Const node representing a wide character constant.
1116 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1118 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1119 ir_mode *mode = get_ir_mode_arithmetic(cnst->base.type);
1121 long long int v = cnst->v.wide_character.begin[0];
1124 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1125 tarval *tv = new_tarval_from_str(buf, len, mode);
1127 return new_d_Const(dbgi, tv);
1131 * Allocate an area of size bytes aligned at alignment
1134 static ir_entity *alloc_trampoline(ir_type *frame_type, int size, unsigned alignment)
1136 static unsigned area_cnt = 0;
1139 ir_type *tp = new_type_array(1, ir_type_char);
1140 set_array_bounds_int(tp, 0, 0, size);
1141 set_type_alignment_bytes(tp, alignment);
1143 snprintf(buf, sizeof(buf), "trampolin%u", area_cnt++);
1144 ident *name = new_id_from_str(buf);
1145 ir_entity *area = new_entity(frame_type, name, tp);
1147 /* mark this entity as compiler generated */
1148 set_entity_compiler_generated(area, 1);
1153 * Return a node representing a trampoline region
1154 * for a given function entity.
1156 * @param dbgi debug info
1157 * @param entity the function entity
1159 static ir_node *get_trampoline_region(dbg_info *dbgi, ir_entity *entity)
1161 ir_entity *region = NULL;
1164 if (current_trampolines != NULL) {
1165 for (i = ARR_LEN(current_trampolines) - 1; i >= 0; --i) {
1166 if (current_trampolines[i].function == entity) {
1167 region = current_trampolines[i].region;
1172 current_trampolines = NEW_ARR_F(trampoline_region, 0);
1174 ir_graph *irg = current_ir_graph;
1175 if (region == NULL) {
1176 /* create a new region */
1177 ir_type *frame_tp = get_irg_frame_type(irg);
1178 trampoline_region reg;
1179 reg.function = entity;
1181 reg.region = alloc_trampoline(frame_tp,
1182 be_params->trampoline_size,
1183 be_params->trampoline_align);
1184 ARR_APP1(trampoline_region, current_trampolines, reg);
1185 region = reg.region;
1187 return new_d_simpleSel(dbgi, get_irg_no_mem(irg), get_irg_frame(irg),
1193 * Creates a SymConst for a given entity.
1195 * @param dbgi debug info
1196 * @param mode the (reference) mode for the SymConst
1197 * @param entity the entity
1199 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1202 assert(entity != NULL);
1203 union symconst_symbol sym;
1204 sym.entity_p = entity;
1205 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1209 * Creates a trampoline for a function represented by an entity.
1211 * @param dbgi debug info
1212 * @param mode the (reference) mode for the function address
1213 * @param entity the function entity
1215 static ir_node *create_trampoline(dbg_info *dbgi, ir_mode *mode,
1218 assert(entity != NULL);
1220 in[0] = get_trampoline_region(dbgi, entity);
1221 in[1] = create_symconst(dbgi, mode, entity);
1222 in[2] = get_irg_frame(current_ir_graph);
1224 ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_inner_trampoline, get_unknown_type());
1225 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1226 return new_Proj(irn, mode, pn_Builtin_1_result);
1230 * Creates a SymConst node representing a string constant.
1232 * @param src_pos the source position of the string constant
1233 * @param id_prefix a prefix for the name of the generated string constant
1234 * @param value the value of the string constant
1236 static ir_node *string_to_firm(const source_position_t *const src_pos,
1237 const char *const id_prefix,
1238 const string_t *const value)
1240 ir_type *const global_type = get_glob_type();
1241 dbg_info *const dbgi = get_dbg_info(src_pos);
1242 ir_type *const type = new_type_array(1, ir_type_const_char);
1244 ident *const id = id_unique(id_prefix);
1245 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1246 set_entity_ld_ident(entity, id);
1247 set_entity_variability(entity, variability_constant);
1248 set_entity_allocation(entity, allocation_static);
1249 set_entity_visibility(entity, visibility_local);
1251 ir_type *const elem_type = ir_type_const_char;
1252 ir_mode *const mode = get_type_mode(elem_type);
1254 const char* const string = value->begin;
1255 const size_t slen = value->size;
1257 set_array_lower_bound_int(type, 0, 0);
1258 set_array_upper_bound_int(type, 0, slen);
1259 set_type_size_bytes(type, slen);
1260 set_type_state(type, layout_fixed);
1262 ir_initializer_t *initializer = create_initializer_compound(slen);
1263 for (size_t i = 0; i < slen; ++i) {
1264 tarval *tv = new_tarval_from_long(string[i], mode);
1265 ir_initializer_t *val = create_initializer_tarval(tv);
1266 set_initializer_compound_value(initializer, i, val);
1268 set_entity_initializer(entity, initializer);
1270 return create_symconst(dbgi, mode_P_data, entity);
1274 * Creates a SymConst node representing a string literal.
1276 * @param literal the string literal
1278 static ir_node *string_literal_to_firm(
1279 const string_literal_expression_t* literal)
1281 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1286 * Creates a SymConst node representing a wide string literal.
1288 * @param literal the wide string literal
1290 static ir_node *wide_string_literal_to_firm(
1291 const wide_string_literal_expression_t* const literal)
1293 ir_type *const global_type = get_glob_type();
1294 ir_type *const elem_type = ir_type_wchar_t;
1295 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1296 ir_type *const type = new_type_array(1, elem_type);
1298 ident *const id = id_unique("Lstr.%u");
1299 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1300 set_entity_ld_ident(entity, id);
1301 set_entity_variability(entity, variability_constant);
1302 set_entity_allocation(entity, allocation_static);
1304 ir_mode *const mode = get_type_mode(elem_type);
1306 const wchar_rep_t *const string = literal->value.begin;
1307 const size_t slen = literal->value.size;
1309 set_array_lower_bound_int(type, 0, 0);
1310 set_array_upper_bound_int(type, 0, slen);
1311 set_type_size_bytes(type, slen * get_mode_size_bytes(mode));
1312 set_type_state(type, layout_fixed);
1314 ir_initializer_t *initializer = create_initializer_compound(slen);
1315 for (size_t i = 0; i < slen; ++i) {
1316 tarval *tv = new_tarval_from_long(string[i], mode);
1317 ir_initializer_t *val = create_initializer_tarval(tv);
1318 set_initializer_compound_value(initializer, i, val);
1320 set_entity_initializer(entity, initializer);
1322 return create_symconst(dbgi, mode_P_data, entity);
1326 * Dereference an address.
1328 * @param dbgi debug info
1329 * @param type the type of the dereferenced result (the points_to type)
1330 * @param addr the address to dereference
1332 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1333 ir_node *const addr)
1335 ir_type *irtype = get_ir_type(type);
1336 if (is_compound_type(irtype)
1337 || is_Method_type(irtype)
1338 || is_Array_type(irtype)) {
1342 ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
1343 ? cons_volatile : cons_none;
1344 ir_mode *const mode = get_type_mode(irtype);
1345 ir_node *const memory = get_store();
1346 ir_node *const load = new_d_Load(dbgi, memory, addr, mode, flags);
1347 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1348 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1350 set_store(load_mem);
1352 ir_mode *const mode_arithmetic = get_ir_mode_arithmetic(type);
1353 return create_conv(dbgi, load_res, mode_arithmetic);
1357 * Creates a strict Conv (to the node's mode) if necessary.
1359 * @param dbgi debug info
1360 * @param node the node to strict conv
1362 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1364 ir_mode *mode = get_irn_mode(node);
1366 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1368 if (!mode_is_float(mode))
1371 /* check if there is already a Conv */
1372 if (is_Conv(node)) {
1373 /* convert it into a strict Conv */
1374 set_Conv_strict(node, 1);
1378 /* otherwise create a new one */
1379 return new_d_strictConv(dbgi, node, mode);
1383 * Returns the address of a global variable.
1385 * @param dbgi debug info
1386 * @param variable the variable
1388 static ir_node *get_global_var_address(dbg_info *const dbgi,
1389 const variable_t *const variable)
1391 ir_entity *const irentity = variable->v.entity;
1392 if (variable->thread_local) {
1393 ir_node *const no_mem = new_NoMem();
1394 ir_node *const tls = get_irg_tls(current_ir_graph);
1395 return new_d_simpleSel(dbgi, no_mem, tls, irentity);
1397 return create_symconst(dbgi, mode_P_data, irentity);
1402 * Returns the correct base address depending on whether it is a parameter or a
1403 * normal local variable.
1405 static ir_node *get_local_frame(ir_entity *const ent)
1407 ir_graph *const irg = current_ir_graph;
1408 const ir_type *const owner = get_entity_owner(ent);
1409 if (owner == current_outer_frame || owner == current_outer_value_type) {
1410 assert(current_static_link != NULL);
1411 return current_static_link;
1413 return get_irg_frame(irg);
1418 * Keep all memory edges of the given block.
1420 static void keep_all_memory(ir_node *block)
1422 ir_node *old = get_cur_block();
1424 set_cur_block(block);
1425 keep_alive(get_store());
1426 /* TODO: keep all memory edges from restricted pointers */
1430 static ir_node *reference_expression_enum_value_to_firm(
1431 const reference_expression_t *ref)
1433 entity_t *entity = ref->entity;
1434 type_t *type = skip_typeref(entity->enum_value.enum_type);
1435 /* make sure the type is constructed */
1436 (void) get_ir_type(type);
1438 return new_Const(entity->enum_value.tv);
1441 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1443 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1444 entity_t *entity = ref->entity;
1445 assert(is_declaration(entity));
1446 type_t *type = skip_typeref(entity->declaration.type);
1448 /* make sure the type is constructed */
1449 (void) get_ir_type(type);
1451 /* for gcc compatibility we have to produce (dummy) addresses for some
1453 if (entity->kind == ENTITY_FUNCTION && entity->function.btk != bk_none) {
1454 if (warning.other) {
1455 warningf(&ref->base.source_position,
1456 "taking address of builtin '%Y'", ref->entity->base.symbol);
1459 /* simply create a NULL pointer */
1460 ir_mode *mode = get_ir_mode_arithmetic(type_void_ptr);
1461 ir_node *res = new_Const_long(mode, 0);
1466 switch ((declaration_kind_t) entity->declaration.kind) {
1467 case DECLARATION_KIND_UNKNOWN:
1470 case DECLARATION_KIND_LOCAL_VARIABLE: {
1471 ir_mode *const mode = get_ir_mode_storage(type);
1472 ir_node *const value = get_value(entity->variable.v.value_number, mode);
1473 return create_conv(NULL, value, get_ir_mode_arithmetic(type));
1475 case DECLARATION_KIND_PARAMETER: {
1476 ir_mode *const mode = get_ir_mode_storage(type);
1477 ir_node *const value = get_value(entity->parameter.v.value_number,mode);
1478 return create_conv(NULL, value, get_ir_mode_arithmetic(type));
1480 case DECLARATION_KIND_FUNCTION: {
1481 ir_mode *const mode = get_ir_mode_storage(type);
1482 return create_symconst(dbgi, mode, entity->function.irentity);
1484 case DECLARATION_KIND_INNER_FUNCTION: {
1485 ir_mode *const mode = get_ir_mode_storage(type);
1486 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1487 /* inner function not using the closure */
1488 return create_symconst(dbgi, mode, entity->function.irentity);
1490 /* need trampoline here */
1491 return create_trampoline(dbgi, mode, entity->function.irentity);
1494 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1495 const variable_t *variable = &entity->variable;
1496 ir_node *const addr = get_global_var_address(dbgi, variable);
1497 return deref_address(dbgi, variable->base.type, addr);
1500 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1501 ir_entity *irentity = entity->variable.v.entity;
1502 ir_node *frame = get_local_frame(irentity);
1503 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1504 return deref_address(dbgi, entity->declaration.type, sel);
1506 case DECLARATION_KIND_PARAMETER_ENTITY: {
1507 ir_entity *irentity = entity->parameter.v.entity;
1508 ir_node *frame = get_local_frame(irentity);
1509 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1510 return deref_address(dbgi, entity->declaration.type, sel);
1513 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1514 return entity->variable.v.vla_base;
1516 case DECLARATION_KIND_COMPOUND_MEMBER:
1517 panic("not implemented reference type");
1520 panic("reference to declaration with unknown type found");
1523 static ir_node *reference_addr(const reference_expression_t *ref)
1525 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1526 entity_t *entity = ref->entity;
1527 assert(is_declaration(entity));
1529 switch((declaration_kind_t) entity->declaration.kind) {
1530 case DECLARATION_KIND_UNKNOWN:
1532 case DECLARATION_KIND_PARAMETER:
1533 case DECLARATION_KIND_LOCAL_VARIABLE:
1534 /* you can store to a local variable (so we don't panic but return NULL
1535 * as an indicator for no real address) */
1537 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1538 ir_node *const addr = get_global_var_address(dbgi, &entity->variable);
1541 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1542 ir_entity *irentity = entity->variable.v.entity;
1543 ir_node *frame = get_local_frame(irentity);
1544 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1548 case DECLARATION_KIND_PARAMETER_ENTITY: {
1549 ir_entity *irentity = entity->parameter.v.entity;
1550 ir_node *frame = get_local_frame(irentity);
1551 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1556 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1557 return entity->variable.v.vla_base;
1559 case DECLARATION_KIND_FUNCTION: {
1560 type_t *const type = skip_typeref(entity->declaration.type);
1561 ir_mode *const mode = get_ir_mode_storage(type);
1562 return create_symconst(dbgi, mode, entity->function.irentity);
1565 case DECLARATION_KIND_INNER_FUNCTION: {
1566 type_t *const type = skip_typeref(entity->declaration.type);
1567 ir_mode *const mode = get_ir_mode_storage(type);
1568 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1569 /* inner function not using the closure */
1570 return create_symconst(dbgi, mode, entity->function.irentity);
1572 /* need trampoline here */
1573 return create_trampoline(dbgi, mode, entity->function.irentity);
1577 case DECLARATION_KIND_COMPOUND_MEMBER:
1578 panic("not implemented reference type");
1581 panic("reference to declaration with unknown type found");
1585 * Generate an unary builtin.
1587 * @param kind the builtin kind to generate
1588 * @param op the operand
1589 * @param function_type the function type for the GNU builtin routine
1590 * @param db debug info
1592 static ir_node *gen_unary_builtin(ir_builtin_kind kind, expression_t *op, type_t *function_type, dbg_info *db)
1595 in[0] = expression_to_firm(op);
1597 ir_type *tp = get_ir_type(function_type);
1598 ir_type *res = get_method_res_type(tp, 0);
1599 ir_node *irn = new_d_Builtin(db, get_irg_no_mem(current_ir_graph), 1, in, kind, tp);
1600 set_irn_pinned(irn, op_pin_state_floats);
1601 return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result);
1605 * Generate a pinned unary builtin.
1607 * @param kind the builtin kind to generate
1608 * @param op the operand
1609 * @param function_type the function type for the GNU builtin routine
1610 * @param db debug info
1612 static ir_node *gen_unary_builtin_pinned(ir_builtin_kind kind, expression_t *op, type_t *function_type, dbg_info *db)
1615 in[0] = expression_to_firm(op);
1617 ir_type *tp = get_ir_type(function_type);
1618 ir_type *res = get_method_res_type(tp, 0);
1619 ir_node *mem = get_store();
1620 ir_node *irn = new_d_Builtin(db, mem, 1, in, kind, tp);
1621 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1622 return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result);
1627 * Generate an binary-void-return builtin.
1629 * @param kind the builtin kind to generate
1630 * @param op1 the first operand
1631 * @param op2 the second operand
1632 * @param function_type the function type for the GNU builtin routine
1633 * @param db debug info
1635 static ir_node *gen_binary_builtin_mem(ir_builtin_kind kind, expression_t *op1, expression_t *op2,
1636 type_t *function_type, dbg_info *db)
1639 in[0] = expression_to_firm(op1);
1640 in[1] = expression_to_firm(op2);
1642 ir_type *tp = get_ir_type(function_type);
1643 ir_node *mem = get_store();
1644 ir_node *irn = new_d_Builtin(db, mem, 2, in, kind, tp);
1645 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1650 * Transform calls to builtin functions.
1652 static ir_node *process_builtin_call(const call_expression_t *call)
1654 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1656 assert(call->function->kind == EXPR_REFERENCE);
1657 reference_expression_t *builtin = &call->function->reference;
1659 type_t *type = skip_typeref(builtin->base.type);
1660 assert(is_type_pointer(type));
1662 type_t *function_type = skip_typeref(type->pointer.points_to);
1664 switch (builtin->entity->function.btk) {
1665 case bk_gnu_builtin_alloca: {
1666 if (call->arguments == NULL || call->arguments->next != NULL) {
1667 panic("invalid number of parameters on __builtin_alloca");
1669 expression_t *argument = call->arguments->expression;
1670 ir_node *size = expression_to_firm(argument);
1672 ir_node *store = get_store();
1673 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1675 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1677 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1682 case bk_gnu_builtin_huge_val:
1683 case bk_gnu_builtin_inf:
1684 case bk_gnu_builtin_inff:
1685 case bk_gnu_builtin_infl: {
1686 type_t *type = function_type->function.return_type;
1687 ir_mode *mode = get_ir_mode_arithmetic(type);
1688 tarval *tv = get_mode_infinite(mode);
1689 ir_node *res = new_d_Const(dbgi, tv);
1692 case bk_gnu_builtin_nan:
1693 case bk_gnu_builtin_nanf:
1694 case bk_gnu_builtin_nanl: {
1695 /* Ignore string for now... */
1696 assert(is_type_function(function_type));
1697 type_t *type = function_type->function.return_type;
1698 ir_mode *mode = get_ir_mode_arithmetic(type);
1699 tarval *tv = get_mode_NAN(mode);
1700 ir_node *res = new_d_Const(dbgi, tv);
1703 case bk_gnu_builtin_expect: {
1704 expression_t *argument = call->arguments->expression;
1705 return _expression_to_firm(argument);
1707 case bk_gnu_builtin_va_end:
1708 /* evaluate the argument of va_end for its side effects */
1709 _expression_to_firm(call->arguments->expression);
1711 case bk_gnu_builtin_frame_address: {
1712 expression_t *const expression = call->arguments->expression;
1713 bool val = fold_constant_to_bool(expression);
1716 return get_irg_frame(current_ir_graph);
1718 /* get the argument */
1721 in[0] = expression_to_firm(expression);
1722 in[1] = get_irg_frame(current_ir_graph);
1723 ir_type *tp = get_ir_type(function_type);
1724 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_frame_address, tp);
1725 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1728 case bk_gnu_builtin_return_address: {
1730 expression_t *const expression = call->arguments->expression;
1733 in[0] = expression_to_firm(expression);
1734 in[1] = get_irg_frame(current_ir_graph);
1735 ir_type *tp = get_ir_type(function_type);
1736 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_return_address, tp);
1737 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1739 case bk_gnu_builtin_ffs:
1740 return gen_unary_builtin(ir_bk_ffs, call->arguments->expression, function_type, dbgi);
1741 case bk_gnu_builtin_clz:
1742 return gen_unary_builtin(ir_bk_clz, call->arguments->expression, function_type, dbgi);
1743 case bk_gnu_builtin_ctz:
1744 return gen_unary_builtin(ir_bk_ctz, call->arguments->expression, function_type, dbgi);
1745 case bk_gnu_builtin_popcount:
1746 case bk_ms__popcount:
1747 return gen_unary_builtin(ir_bk_popcount, call->arguments->expression, function_type, dbgi);
1748 case bk_gnu_builtin_parity:
1749 return gen_unary_builtin(ir_bk_parity, call->arguments->expression, function_type, dbgi);
1750 case bk_gnu_builtin_prefetch: {
1751 call_argument_t *const args = call->arguments;
1752 expression_t *const addr = args->expression;
1755 in[0] = _expression_to_firm(addr);
1756 if (args->next != NULL) {
1757 expression_t *const rw = args->next->expression;
1759 in[1] = _expression_to_firm(rw);
1761 if (args->next->next != NULL) {
1762 expression_t *const locality = args->next->next->expression;
1764 in[2] = expression_to_firm(locality);
1766 in[2] = new_Const_long(mode_int, 3);
1769 in[1] = new_Const_long(mode_int, 0);
1770 in[2] = new_Const_long(mode_int, 3);
1772 ir_type *tp = get_ir_type(function_type);
1773 ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_prefetch, tp);
1774 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1777 case bk_gnu_builtin_trap:
1780 ir_type *tp = get_ir_type(function_type);
1781 ir_node *irn = new_d_Builtin(dbgi, get_store(), 0, NULL, ir_bk_trap, tp);
1782 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1785 case bk_ms__debugbreak: {
1786 ir_type *tp = get_ir_type(function_type);
1787 ir_node *irn = new_d_Builtin(dbgi, get_store(), 0, NULL, ir_bk_debugbreak, tp);
1788 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1791 case bk_ms_ReturnAddress: {
1794 in[0] = new_Const_long(mode_int, 0);
1795 in[1] = get_irg_frame(current_ir_graph);
1796 ir_type *tp = get_ir_type(function_type);
1797 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_return_address, tp);
1798 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1801 case bk_ms_rotl64: {
1802 ir_node *val = expression_to_firm(call->arguments->expression);
1803 ir_node *shf = expression_to_firm(call->arguments->next->expression);
1804 ir_mode *mode = get_irn_mode(val);
1805 return new_d_Rotl(dbgi, val, create_conv(dbgi, shf, mode_uint), mode);
1808 case bk_ms_rotr64: {
1809 ir_node *val = expression_to_firm(call->arguments->expression);
1810 ir_node *shf = expression_to_firm(call->arguments->next->expression);
1811 ir_mode *mode = get_irn_mode(val);
1812 ir_node *c = new_Const_long(mode_uint, get_mode_size_bits(mode));
1813 ir_node *sub = new_d_Sub(dbgi, c, create_conv(dbgi, shf, mode_uint), mode_uint);
1814 return new_d_Rotl(dbgi, val, sub, mode);
1816 case bk_ms_byteswap_ushort:
1817 case bk_ms_byteswap_ulong:
1818 case bk_ms_byteswap_uint64:
1819 return gen_unary_builtin(ir_bk_bswap, call->arguments->expression, function_type, dbgi);
1822 case bk_ms__indword:
1823 return gen_unary_builtin_pinned(ir_bk_inport, call->arguments->expression, function_type, dbgi);
1824 case bk_ms__outbyte:
1825 case bk_ms__outword:
1826 case bk_ms__outdword:
1827 return gen_binary_builtin_mem(ir_bk_outport, call->arguments->expression,
1828 call->arguments->next->expression, function_type, dbgi);
1830 panic("unsupported builtin found");
1835 * Transform a call expression.
1836 * Handles some special cases, like alloca() calls, which must be resolved
1837 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1838 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1841 static ir_node *call_expression_to_firm(const call_expression_t *const call)
1843 dbg_info *const dbgi = get_dbg_info(&call->base.source_position);
1844 assert(get_cur_block() != NULL);
1846 expression_t *function = call->function;
1847 if (function->kind == EXPR_REFERENCE) {
1848 const reference_expression_t *ref = &function->reference;
1849 entity_t *entity = ref->entity;
1851 if (entity->kind == ENTITY_FUNCTION) {
1852 if (entity->function.btk != bk_none) {
1853 return process_builtin_call(call);
1856 ir_entity *irentity = entity->function.irentity;
1857 if (irentity == NULL)
1858 irentity = get_function_entity(entity, NULL);
1860 if (irentity == rts_entities[rts_alloca]) {
1861 /* handle alloca() call */
1862 expression_t *argument = call->arguments->expression;
1863 ir_node *size = expression_to_firm(argument);
1864 ir_mode *mode = get_ir_mode_arithmetic(type_size_t);
1866 size = create_conv(dbgi, size, mode);
1868 ir_node *store = get_store();
1869 ir_node *alloca = new_d_Alloc(dbgi, store, size,
1870 firm_unknown_type, stack_alloc);
1871 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1873 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1879 ir_node *callee = expression_to_firm(function);
1881 type_t *type = skip_typeref(function->base.type);
1882 assert(is_type_pointer(type));
1883 pointer_type_t *pointer_type = &type->pointer;
1884 type_t *points_to = skip_typeref(pointer_type->points_to);
1885 assert(is_type_function(points_to));
1886 function_type_t *function_type = &points_to->function;
1888 int n_parameters = 0;
1889 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1890 ir_type *new_method_type = NULL;
1891 if (function_type->variadic || function_type->unspecified_parameters) {
1892 const call_argument_t *argument = call->arguments;
1893 for ( ; argument != NULL; argument = argument->next) {
1897 /* we need to construct a new method type matching the call
1899 type_dbg_info *tdbgi = get_type_dbg_info_((const type_t*) function_type);
1900 int n_res = get_method_n_ress(ir_method_type);
1901 new_method_type = new_d_type_method(n_parameters, n_res, tdbgi);
1902 set_method_calling_convention(new_method_type,
1903 get_method_calling_convention(ir_method_type));
1904 set_method_additional_properties(new_method_type,
1905 get_method_additional_properties(ir_method_type));
1906 set_method_variadicity(new_method_type,
1907 get_method_variadicity(ir_method_type));
1909 for (int i = 0; i < n_res; ++i) {
1910 set_method_res_type(new_method_type, i,
1911 get_method_res_type(ir_method_type, i));
1913 argument = call->arguments;
1914 for (int i = 0; i < n_parameters; ++i, argument = argument->next) {
1915 expression_t *expression = argument->expression;
1916 ir_type *irtype = get_ir_type(expression->base.type);
1917 set_method_param_type(new_method_type, i, irtype);
1919 ir_method_type = new_method_type;
1921 n_parameters = get_method_n_params(ir_method_type);
1924 ir_node *in[n_parameters];
1926 const call_argument_t *argument = call->arguments;
1927 for (int n = 0; n < n_parameters; ++n) {
1928 expression_t *expression = argument->expression;
1929 ir_node *arg_node = expression_to_firm(expression);
1931 type_t *type = skip_typeref(expression->base.type);
1932 if (!is_type_compound(type)) {
1933 ir_mode *mode = get_ir_mode_storage(expression->base.type);
1934 arg_node = create_conv(dbgi, arg_node, mode);
1935 arg_node = do_strict_conv(dbgi, arg_node);
1940 argument = argument->next;
1943 ir_node *store = get_store();
1944 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1946 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M);
1949 type_t *return_type = skip_typeref(function_type->return_type);
1950 ir_node *result = NULL;
1952 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1953 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1955 if (is_type_scalar(return_type)) {
1956 ir_mode *mode = get_ir_mode_storage(return_type);
1957 result = new_d_Proj(dbgi, resproj, mode, 0);
1958 ir_mode *mode_arith = get_ir_mode_arithmetic(return_type);
1959 result = create_conv(NULL, result, mode_arith);
1961 ir_mode *mode = mode_P_data;
1962 result = new_d_Proj(dbgi, resproj, mode, 0);
1966 if (function->kind == EXPR_REFERENCE &&
1967 function->reference.entity->declaration.modifiers & DM_NORETURN) {
1968 /* A dead end: Keep the Call and the Block. Also place all further
1969 * nodes into a new and unreachable block. */
1971 keep_alive(get_cur_block());
1978 static void statement_to_firm(statement_t *statement);
1979 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1981 static ir_node *expression_to_addr(const expression_t *expression);
1982 static ir_node *create_condition_evaluation(const expression_t *expression,
1983 ir_node *true_block,
1984 ir_node *false_block);
1986 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1989 if (!is_type_compound(type)) {
1990 ir_mode *mode = get_ir_mode_storage(type);
1991 value = create_conv(dbgi, value, mode);
1992 value = do_strict_conv(dbgi, value);
1995 ir_node *memory = get_store();
1997 if (is_type_scalar(type)) {
1998 ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
1999 ? cons_volatile : cons_none;
2000 ir_node *store = new_d_Store(dbgi, memory, addr, value, flags);
2001 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
2002 set_store(store_mem);
2004 ir_type *irtype = get_ir_type(type);
2005 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
2006 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
2007 set_store(copyb_mem);
2011 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
2013 tarval *all_one = get_mode_all_one(mode);
2014 int mode_size = get_mode_size_bits(mode);
2016 assert(offset >= 0);
2018 assert(offset + size <= mode_size);
2019 if (size == mode_size) {
2023 long shiftr = get_mode_size_bits(mode) - size;
2024 long shiftl = offset;
2025 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
2026 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
2027 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
2028 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
2033 static ir_node *bitfield_store_to_firm(dbg_info *dbgi,
2034 ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile)
2036 ir_type *entity_type = get_entity_type(entity);
2037 ir_type *base_type = get_primitive_base_type(entity_type);
2038 assert(base_type != NULL);
2039 ir_mode *mode = get_type_mode(base_type);
2041 value = create_conv(dbgi, value, mode);
2043 /* kill upper bits of value and shift to right position */
2044 int bitoffset = get_entity_offset_bits_remainder(entity);
2045 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
2047 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
2048 ir_node *mask_node = new_d_Const(dbgi, mask);
2049 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
2050 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
2051 ir_node *shiftcount = new_d_Const(dbgi, shiftl);
2052 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
2054 /* load current value */
2055 ir_node *mem = get_store();
2056 ir_node *load = new_d_Load(dbgi, mem, addr, mode,
2057 set_volatile ? cons_volatile : cons_none);
2058 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
2059 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
2060 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
2061 tarval *inv_mask = tarval_not(shift_mask);
2062 ir_node *inv_mask_node = new_d_Const(dbgi, inv_mask);
2063 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
2065 /* construct new value and store */
2066 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
2067 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val,
2068 set_volatile ? cons_volatile : cons_none);
2069 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
2070 set_store(store_mem);
2072 return value_masked;
2075 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
2078 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2079 type_t *type = expression->base.type;
2080 ir_mode *mode = get_ir_mode_storage(type);
2081 ir_node *mem = get_store();
2082 ir_node *load = new_d_Load(dbgi, mem, addr, mode, cons_none);
2083 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
2084 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
2086 load_res = create_conv(dbgi, load_res, mode_int);
2088 set_store(load_mem);
2090 /* kill upper bits */
2091 assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER);
2092 ir_entity *entity = expression->compound_entry->compound_member.entity;
2093 int bitoffset = get_entity_offset_bits_remainder(entity);
2094 ir_type *entity_type = get_entity_type(entity);
2095 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
2096 long shift_bitsl = machine_size - bitoffset - bitsize;
2097 assert(shift_bitsl >= 0);
2098 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
2099 ir_node *countl = new_d_Const(dbgi, tvl);
2100 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
2102 long shift_bitsr = bitoffset + shift_bitsl;
2103 assert(shift_bitsr <= (long) machine_size);
2104 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
2105 ir_node *countr = new_d_Const(dbgi, tvr);
2107 if (mode_is_signed(mode)) {
2108 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
2110 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
2113 return create_conv(dbgi, shiftr, mode);
2116 /* make sure the selected compound type is constructed */
2117 static void construct_select_compound(const select_expression_t *expression)
2119 type_t *type = skip_typeref(expression->compound->base.type);
2120 if (is_type_pointer(type)) {
2121 type = type->pointer.points_to;
2123 (void) get_ir_type(type);
2126 static ir_node *set_value_for_expression_addr(const expression_t *expression,
2127 ir_node *value, ir_node *addr)
2129 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2130 type_t *type = skip_typeref(expression->base.type);
2132 if (!is_type_compound(type)) {
2133 ir_mode *mode = get_ir_mode_storage(type);
2134 value = create_conv(dbgi, value, mode);
2135 value = do_strict_conv(dbgi, value);
2138 if (expression->kind == EXPR_REFERENCE) {
2139 const reference_expression_t *ref = &expression->reference;
2141 entity_t *entity = ref->entity;
2142 assert(is_declaration(entity));
2143 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2144 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2145 set_value(entity->variable.v.value_number, value);
2147 } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2148 set_value(entity->parameter.v.value_number, value);
2154 addr = expression_to_addr(expression);
2155 assert(addr != NULL);
2157 if (expression->kind == EXPR_SELECT) {
2158 const select_expression_t *select = &expression->select;
2160 construct_select_compound(select);
2162 entity_t *entity = select->compound_entry;
2163 assert(entity->kind == ENTITY_COMPOUND_MEMBER);
2164 if (entity->declaration.type->kind == TYPE_BITFIELD) {
2165 ir_entity *irentity = entity->compound_member.entity;
2167 = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
2168 value = bitfield_store_to_firm(dbgi, irentity, addr, value,
2174 assign_value(dbgi, addr, type, value);
2178 static void set_value_for_expression(const expression_t *expression,
2181 set_value_for_expression_addr(expression, value, NULL);
2184 static ir_node *get_value_from_lvalue(const expression_t *expression,
2187 if (expression->kind == EXPR_REFERENCE) {
2188 const reference_expression_t *ref = &expression->reference;
2190 entity_t *entity = ref->entity;
2191 assert(entity->kind == ENTITY_VARIABLE
2192 || entity->kind == ENTITY_PARAMETER);
2193 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2195 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2196 value_number = entity->variable.v.value_number;
2197 assert(addr == NULL);
2198 type_t *type = skip_typeref(expression->base.type);
2199 ir_mode *mode = get_ir_mode_storage(type);
2200 ir_node *res = get_value(value_number, mode);
2201 return create_conv(NULL, res, get_ir_mode_arithmetic(type));
2202 } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2203 value_number = entity->parameter.v.value_number;
2204 assert(addr == NULL);
2205 type_t *type = skip_typeref(expression->base.type);
2206 ir_mode *mode = get_ir_mode_storage(type);
2207 ir_node *res = get_value(value_number, mode);
2208 return create_conv(NULL, res, get_ir_mode_arithmetic(type));
2212 assert(addr != NULL);
2213 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2216 if (expression->kind == EXPR_SELECT &&
2217 expression->select.compound_entry->declaration.type->kind == TYPE_BITFIELD){
2218 construct_select_compound(&expression->select);
2219 value = bitfield_extract_to_firm(&expression->select, addr);
2221 value = deref_address(dbgi, expression->base.type, addr);
2228 static ir_node *create_incdec(const unary_expression_t *expression)
2230 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2231 const expression_t *value_expr = expression->value;
2232 ir_node *addr = expression_to_addr(value_expr);
2233 ir_node *value = get_value_from_lvalue(value_expr, addr);
2235 type_t *type = skip_typeref(expression->base.type);
2236 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2239 if (is_type_pointer(type)) {
2240 pointer_type_t *pointer_type = &type->pointer;
2241 offset = get_type_size_node(pointer_type->points_to);
2243 assert(is_type_arithmetic(type));
2244 offset = new_Const(get_mode_one(mode));
2248 ir_node *store_value;
2249 switch(expression->base.kind) {
2250 case EXPR_UNARY_POSTFIX_INCREMENT:
2252 store_value = new_d_Add(dbgi, value, offset, mode);
2254 case EXPR_UNARY_POSTFIX_DECREMENT:
2256 store_value = new_d_Sub(dbgi, value, offset, mode);
2258 case EXPR_UNARY_PREFIX_INCREMENT:
2259 result = new_d_Add(dbgi, value, offset, mode);
2260 store_value = result;
2262 case EXPR_UNARY_PREFIX_DECREMENT:
2263 result = new_d_Sub(dbgi, value, offset, mode);
2264 store_value = result;
2267 panic("no incdec expr in create_incdec");
2270 set_value_for_expression_addr(value_expr, store_value, addr);
2275 static bool is_local_variable(expression_t *expression)
2277 if (expression->kind != EXPR_REFERENCE)
2279 reference_expression_t *ref_expr = &expression->reference;
2280 entity_t *entity = ref_expr->entity;
2281 if (entity->kind != ENTITY_VARIABLE)
2283 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2284 return entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE;
2287 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
2290 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
2291 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
2292 case EXPR_BINARY_NOTEQUAL:
2293 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
2294 case EXPR_BINARY_ISLESS:
2295 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
2296 case EXPR_BINARY_ISLESSEQUAL:
2297 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
2298 case EXPR_BINARY_ISGREATER:
2299 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
2300 case EXPR_BINARY_ISGREATEREQUAL:
2301 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
2302 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
2307 panic("trying to get pn_Cmp from non-comparison binexpr type");
2311 * Handle the assume optimizer hint: check if a Confirm
2312 * node can be created.
2314 * @param dbi debug info
2315 * @param expr the IL assume expression
2317 * we support here only some simple cases:
2322 static ir_node *handle_assume_compare(dbg_info *dbi,
2323 const binary_expression_t *expression)
2325 expression_t *op1 = expression->left;
2326 expression_t *op2 = expression->right;
2327 entity_t *var2, *var = NULL;
2328 ir_node *res = NULL;
2331 cmp_val = get_pnc(expression->base.kind, op1->base.type);
2333 if (is_local_variable(op1) && is_local_variable(op2)) {
2334 var = op1->reference.entity;
2335 var2 = op2->reference.entity;
2337 type_t *const type = skip_typeref(var->declaration.type);
2338 ir_mode *const mode = get_ir_mode_storage(type);
2340 ir_node *const irn1 = get_value(var->variable.v.value_number, mode);
2341 ir_node *const irn2 = get_value(var2->variable.v.value_number, mode);
2343 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
2344 set_value(var2->variable.v.value_number, res);
2346 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
2347 set_value(var->variable.v.value_number, res);
2353 if (is_local_variable(op1) && is_constant_expression(op2)) {
2354 var = op1->reference.entity;
2356 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2357 cmp_val = get_inversed_pnc(cmp_val);
2358 var = op2->reference.entity;
2363 type_t *const type = skip_typeref(var->declaration.type);
2364 ir_mode *const mode = get_ir_mode_storage(type);
2366 res = get_value(var->variable.v.value_number, mode);
2367 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2368 set_value(var->variable.v.value_number, res);
2374 * Handle the assume optimizer hint.
2376 * @param dbi debug info
2377 * @param expr the IL assume expression
2379 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression)
2381 switch(expression->kind) {
2382 case EXPR_BINARY_EQUAL:
2383 case EXPR_BINARY_NOTEQUAL:
2384 case EXPR_BINARY_LESS:
2385 case EXPR_BINARY_LESSEQUAL:
2386 case EXPR_BINARY_GREATER:
2387 case EXPR_BINARY_GREATEREQUAL:
2388 return handle_assume_compare(dbi, &expression->binary);
2394 static ir_node *create_cast(dbg_info *dbgi, ir_node *value_node,
2395 type_t *from_type, type_t *type)
2397 type = skip_typeref(type);
2398 if (!is_type_scalar(type)) {
2399 /* make sure firm type is constructed */
2400 (void) get_ir_type(type);
2404 from_type = skip_typeref(from_type);
2405 ir_mode *mode = get_ir_mode_storage(type);
2406 /* check for conversion from / to __based types */
2407 if (is_type_pointer(type) && is_type_pointer(from_type)) {
2408 const variable_t *from_var = from_type->pointer.base_variable;
2409 const variable_t *to_var = type->pointer.base_variable;
2410 if (from_var != to_var) {
2411 if (from_var != NULL) {
2412 ir_node *const addr = get_global_var_address(dbgi, from_var);
2413 ir_node *const base = deref_address(dbgi, from_var->base.type, addr);
2414 value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(from_type));
2416 if (to_var != NULL) {
2417 ir_node *const addr = get_global_var_address(dbgi, to_var);
2418 ir_node *const base = deref_address(dbgi, to_var->base.type, addr);
2419 value_node = new_d_Sub(dbgi, value_node, base, mode);
2424 if (is_type_atomic(type, ATOMIC_TYPE_BOOL)) {
2425 /* bool adjustments (we save a mode_Bu, but have to temporarily
2426 * convert to mode_b so we only get a 0/1 value */
2427 value_node = create_conv(dbgi, value_node, mode_b);
2430 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
2431 ir_node *node = create_conv(dbgi, value_node, mode);
2432 node = do_strict_conv(dbgi, node);
2433 node = create_conv(dbgi, node, mode_arith);
2438 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2440 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2441 type_t *type = skip_typeref(expression->base.type);
2443 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2444 return expression_to_addr(expression->value);
2446 const expression_t *value = expression->value;
2448 switch(expression->base.kind) {
2449 case EXPR_UNARY_NEGATE: {
2450 ir_node *value_node = expression_to_firm(value);
2451 ir_mode *mode = get_ir_mode_arithmetic(type);
2452 return new_d_Minus(dbgi, value_node, mode);
2454 case EXPR_UNARY_PLUS:
2455 return expression_to_firm(value);
2456 case EXPR_UNARY_BITWISE_NEGATE: {
2457 ir_node *value_node = expression_to_firm(value);
2458 ir_mode *mode = get_ir_mode_arithmetic(type);
2459 return new_d_Not(dbgi, value_node, mode);
2461 case EXPR_UNARY_NOT: {
2462 ir_node *value_node = _expression_to_firm(value);
2463 value_node = create_conv(dbgi, value_node, mode_b);
2464 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2467 case EXPR_UNARY_DEREFERENCE: {
2468 ir_node *value_node = expression_to_firm(value);
2469 type_t *value_type = skip_typeref(value->base.type);
2470 assert(is_type_pointer(value_type));
2472 /* check for __based */
2473 const variable_t *const base_var = value_type->pointer.base_variable;
2474 if (base_var != NULL) {
2475 ir_node *const addr = get_global_var_address(dbgi, base_var);
2476 ir_node *const base = deref_address(dbgi, base_var->base.type, addr);
2477 value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(value_type));
2479 type_t *points_to = value_type->pointer.points_to;
2480 return deref_address(dbgi, points_to, value_node);
2482 case EXPR_UNARY_POSTFIX_INCREMENT:
2483 case EXPR_UNARY_POSTFIX_DECREMENT:
2484 case EXPR_UNARY_PREFIX_INCREMENT:
2485 case EXPR_UNARY_PREFIX_DECREMENT:
2486 return create_incdec(expression);
2487 case EXPR_UNARY_CAST_IMPLICIT:
2488 case EXPR_UNARY_CAST: {
2489 ir_node *value_node = expression_to_firm(value);
2490 type_t *from_type = value->base.type;
2491 return create_cast(dbgi, value_node, from_type, type);
2493 case EXPR_UNARY_ASSUME:
2494 if (firm_opt.confirm)
2495 return handle_assume(dbgi, value);
2502 panic("invalid UNEXPR type found");
2506 * produces a 0/1 depending of the value of a mode_b node
2508 static ir_node *produce_condition_result(const expression_t *expression,
2509 ir_mode *mode, dbg_info *dbgi)
2511 ir_node *cur_block = get_cur_block();
2513 ir_node *one_block = new_immBlock();
2514 set_cur_block(one_block);
2515 ir_node *one = new_Const(get_mode_one(mode));
2516 ir_node *jmp_one = new_d_Jmp(dbgi);
2518 ir_node *zero_block = new_immBlock();
2519 set_cur_block(zero_block);
2520 ir_node *zero = new_Const(get_mode_null(mode));
2521 ir_node *jmp_zero = new_d_Jmp(dbgi);
2523 set_cur_block(cur_block);
2524 create_condition_evaluation(expression, one_block, zero_block);
2525 mature_immBlock(one_block);
2526 mature_immBlock(zero_block);
2528 ir_node *in_cf[2] = { jmp_one, jmp_zero };
2529 new_Block(2, in_cf);
2531 ir_node *in[2] = { one, zero };
2532 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2537 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2538 ir_node *value, type_t *type)
2540 ir_mode *const mode = get_ir_mode_arithmetic(type_ptrdiff_t);
2541 assert(is_type_pointer(type));
2542 pointer_type_t *const pointer_type = &type->pointer;
2543 type_t *const points_to = skip_typeref(pointer_type->points_to);
2544 ir_node * elem_size = get_type_size_node(points_to);
2545 elem_size = create_conv(dbgi, elem_size, mode);
2546 value = create_conv(dbgi, value, mode);
2547 ir_node *const mul = new_d_Mul(dbgi, value, elem_size, mode);
2551 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2552 ir_node *left, ir_node *right)
2555 type_t *type_left = skip_typeref(expression->left->base.type);
2556 type_t *type_right = skip_typeref(expression->right->base.type);
2558 expression_kind_t kind = expression->base.kind;
2561 case EXPR_BINARY_SHIFTLEFT:
2562 case EXPR_BINARY_SHIFTRIGHT:
2563 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2564 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2565 mode = get_irn_mode(left);
2566 right = create_conv(dbgi, right, mode_uint);
2569 case EXPR_BINARY_SUB:
2570 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2571 const pointer_type_t *const ptr_type = &type_left->pointer;
2573 mode = get_ir_mode_arithmetic(expression->base.type);
2574 ir_node *const elem_size = get_type_size_node(ptr_type->points_to);
2575 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2576 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2577 ir_node *const no_mem = new_NoMem();
2578 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2579 mode, op_pin_state_floats);
2580 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2583 case EXPR_BINARY_SUB_ASSIGN:
2584 if (is_type_pointer(type_left)) {
2585 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2586 mode = get_ir_mode_arithmetic(type_left);
2591 case EXPR_BINARY_ADD:
2592 case EXPR_BINARY_ADD_ASSIGN:
2593 if (is_type_pointer(type_left)) {
2594 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2595 mode = get_ir_mode_arithmetic(type_left);
2597 } else if (is_type_pointer(type_right)) {
2598 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2599 mode = get_ir_mode_arithmetic(type_right);
2606 mode = get_ir_mode_arithmetic(type_right);
2607 left = create_conv(dbgi, left, mode);
2612 case EXPR_BINARY_ADD_ASSIGN:
2613 case EXPR_BINARY_ADD:
2614 return new_d_Add(dbgi, left, right, mode);
2615 case EXPR_BINARY_SUB_ASSIGN:
2616 case EXPR_BINARY_SUB:
2617 return new_d_Sub(dbgi, left, right, mode);
2618 case EXPR_BINARY_MUL_ASSIGN:
2619 case EXPR_BINARY_MUL:
2620 return new_d_Mul(dbgi, left, right, mode);
2621 case EXPR_BINARY_BITWISE_AND:
2622 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2623 return new_d_And(dbgi, left, right, mode);
2624 case EXPR_BINARY_BITWISE_OR:
2625 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2626 return new_d_Or(dbgi, left, right, mode);
2627 case EXPR_BINARY_BITWISE_XOR:
2628 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2629 return new_d_Eor(dbgi, left, right, mode);
2630 case EXPR_BINARY_SHIFTLEFT:
2631 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2632 return new_d_Shl(dbgi, left, right, mode);
2633 case EXPR_BINARY_SHIFTRIGHT:
2634 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2635 if (mode_is_signed(mode)) {
2636 return new_d_Shrs(dbgi, left, right, mode);
2638 return new_d_Shr(dbgi, left, right, mode);
2640 case EXPR_BINARY_DIV:
2641 case EXPR_BINARY_DIV_ASSIGN: {
2642 ir_node *pin = new_Pin(new_NoMem());
2645 if (mode_is_float(mode)) {
2646 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2647 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2649 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2650 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2654 case EXPR_BINARY_MOD:
2655 case EXPR_BINARY_MOD_ASSIGN: {
2656 ir_node *pin = new_Pin(new_NoMem());
2657 assert(!mode_is_float(mode));
2658 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2659 op_pin_state_floats);
2660 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2664 panic("unexpected expression kind");
2668 static ir_node *create_lazy_op(const binary_expression_t *expression)
2670 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2671 type_t *type = skip_typeref(expression->base.type);
2672 ir_mode *mode = get_ir_mode_arithmetic(type);
2674 if (is_constant_expression(expression->left)) {
2675 bool val = fold_constant_to_bool(expression->left);
2676 expression_kind_t ekind = expression->base.kind;
2677 assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
2678 if (ekind == EXPR_BINARY_LOGICAL_AND) {
2680 return new_Const(get_mode_null(mode));
2684 return new_Const(get_mode_one(mode));
2688 if (is_constant_expression(expression->right)) {
2689 bool valr = fold_constant_to_bool(expression->right);
2691 new_Const(get_mode_one(mode)) :
2692 new_Const(get_mode_null(mode));
2695 return produce_condition_result(expression->right, mode, dbgi);
2698 return produce_condition_result((const expression_t*) expression, mode,
2702 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2703 ir_node *right, ir_mode *mode);
2705 static ir_node *create_assign_binop(const binary_expression_t *expression)
2707 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2708 const expression_t *left_expr = expression->left;
2709 type_t *type = skip_typeref(left_expr->base.type);
2710 ir_node *right = expression_to_firm(expression->right);
2711 ir_node *left_addr = expression_to_addr(left_expr);
2712 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2713 ir_node *result = create_op(dbgi, expression, left, right);
2715 result = create_cast(dbgi, result, expression->right->base.type, type);
2716 result = do_strict_conv(dbgi, result);
2718 result = set_value_for_expression_addr(left_expr, result, left_addr);
2720 if (!is_type_compound(type)) {
2721 ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
2722 result = create_conv(dbgi, result, mode_arithmetic);
2727 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2729 expression_kind_t kind = expression->base.kind;
2732 case EXPR_BINARY_EQUAL:
2733 case EXPR_BINARY_NOTEQUAL:
2734 case EXPR_BINARY_LESS:
2735 case EXPR_BINARY_LESSEQUAL:
2736 case EXPR_BINARY_GREATER:
2737 case EXPR_BINARY_GREATEREQUAL:
2738 case EXPR_BINARY_ISGREATER:
2739 case EXPR_BINARY_ISGREATEREQUAL:
2740 case EXPR_BINARY_ISLESS:
2741 case EXPR_BINARY_ISLESSEQUAL:
2742 case EXPR_BINARY_ISLESSGREATER:
2743 case EXPR_BINARY_ISUNORDERED: {
2744 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2745 ir_node *left = expression_to_firm(expression->left);
2746 ir_node *right = expression_to_firm(expression->right);
2747 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2748 long pnc = get_pnc(kind, expression->left->base.type);
2749 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2752 case EXPR_BINARY_ASSIGN: {
2753 ir_node *addr = expression_to_addr(expression->left);
2754 ir_node *right = expression_to_firm(expression->right);
2756 = set_value_for_expression_addr(expression->left, right, addr);
2758 type_t *type = skip_typeref(expression->base.type);
2759 if (!is_type_compound(type)) {
2760 ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
2761 res = create_conv(NULL, res, mode_arithmetic);
2765 case EXPR_BINARY_ADD:
2766 case EXPR_BINARY_SUB:
2767 case EXPR_BINARY_MUL:
2768 case EXPR_BINARY_DIV:
2769 case EXPR_BINARY_MOD:
2770 case EXPR_BINARY_BITWISE_AND:
2771 case EXPR_BINARY_BITWISE_OR:
2772 case EXPR_BINARY_BITWISE_XOR:
2773 case EXPR_BINARY_SHIFTLEFT:
2774 case EXPR_BINARY_SHIFTRIGHT:
2776 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2777 ir_node *left = expression_to_firm(expression->left);
2778 ir_node *right = expression_to_firm(expression->right);
2779 return create_op(dbgi, expression, left, right);
2781 case EXPR_BINARY_LOGICAL_AND:
2782 case EXPR_BINARY_LOGICAL_OR:
2783 return create_lazy_op(expression);
2784 case EXPR_BINARY_COMMA:
2785 /* create side effects of left side */
2786 (void) expression_to_firm(expression->left);
2787 return _expression_to_firm(expression->right);
2789 case EXPR_BINARY_ADD_ASSIGN:
2790 case EXPR_BINARY_SUB_ASSIGN:
2791 case EXPR_BINARY_MUL_ASSIGN:
2792 case EXPR_BINARY_MOD_ASSIGN:
2793 case EXPR_BINARY_DIV_ASSIGN:
2794 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2795 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2796 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2797 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2798 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2799 return create_assign_binop(expression);
2801 panic("TODO binexpr type");
2805 static ir_node *array_access_addr(const array_access_expression_t *expression)
2807 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2808 ir_node *base_addr = expression_to_firm(expression->array_ref);
2809 ir_node *offset = expression_to_firm(expression->index);
2810 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2811 ir_node *real_offset = adjust_for_pointer_arithmetic(dbgi, offset, ref_type);
2812 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2817 static ir_node *array_access_to_firm(
2818 const array_access_expression_t *expression)
2820 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2821 ir_node *addr = array_access_addr(expression);
2822 type_t *type = revert_automatic_type_conversion(
2823 (const expression_t*) expression);
2824 type = skip_typeref(type);
2826 return deref_address(dbgi, type, addr);
2829 static long get_offsetof_offset(const offsetof_expression_t *expression)
2831 type_t *orig_type = expression->type;
2834 designator_t *designator = expression->designator;
2835 for ( ; designator != NULL; designator = designator->next) {
2836 type_t *type = skip_typeref(orig_type);
2837 /* be sure the type is constructed */
2838 (void) get_ir_type(type);
2840 if (designator->symbol != NULL) {
2841 assert(is_type_compound(type));
2842 symbol_t *symbol = designator->symbol;
2844 compound_t *compound = type->compound.compound;
2845 entity_t *iter = compound->members.entities;
2846 for ( ; iter != NULL; iter = iter->base.next) {
2847 if (iter->base.symbol == symbol) {
2851 assert(iter != NULL);
2853 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
2854 assert(iter->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2855 offset += get_entity_offset(iter->compound_member.entity);
2857 orig_type = iter->declaration.type;
2859 expression_t *array_index = designator->array_index;
2860 assert(designator->array_index != NULL);
2861 assert(is_type_array(type));
2863 long index = fold_constant_to_int(array_index);
2864 ir_type *arr_type = get_ir_type(type);
2865 ir_type *elem_type = get_array_element_type(arr_type);
2866 long elem_size = get_type_size_bytes(elem_type);
2868 offset += index * elem_size;
2870 orig_type = type->array.element_type;
2877 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2879 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2880 long offset = get_offsetof_offset(expression);
2881 tarval *tv = new_tarval_from_long(offset, mode);
2882 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2884 return new_d_Const(dbgi, tv);
2887 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2888 ir_entity *entity, type_t *type);
2890 static ir_node *compound_literal_to_firm(
2891 const compound_literal_expression_t *expression)
2893 type_t *type = expression->type;
2895 /* create an entity on the stack */
2896 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2898 ident *const id = id_unique("CompLit.%u");
2899 ir_type *const irtype = get_ir_type(type);
2900 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2901 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2902 set_entity_ld_ident(entity, id);
2904 set_entity_variability(entity, variability_uninitialized);
2906 /* create initialisation code */
2907 initializer_t *initializer = expression->initializer;
2908 create_local_initializer(initializer, dbgi, entity, type);
2910 /* create a sel for the compound literal address */
2911 ir_node *frame = get_irg_frame(current_ir_graph);
2912 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2917 * Transform a sizeof expression into Firm code.
2919 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2921 type_t *const type = skip_typeref(expression->type);
2922 /* §6.5.3.4:2 if the type is a VLA, evaluate the expression. */
2923 if (is_type_array(type) && type->array.is_vla
2924 && expression->tp_expression != NULL) {
2925 expression_to_firm(expression->tp_expression);
2928 return get_type_size_node(type);
2931 static entity_t *get_expression_entity(const expression_t *expression)
2933 if (expression->kind != EXPR_REFERENCE)
2936 return expression->reference.entity;
2939 static unsigned get_cparser_entity_alignment(const entity_t *entity)
2941 switch(entity->kind) {
2942 DECLARATION_KIND_CASES
2943 return entity->declaration.alignment;
2946 return entity->compound.alignment;
2947 case ENTITY_TYPEDEF:
2948 return entity->typedefe.alignment;
2956 * Transform an alignof expression into Firm code.
2958 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2960 unsigned alignment = 0;
2962 const expression_t *tp_expression = expression->tp_expression;
2963 if (tp_expression != NULL) {
2964 entity_t *entity = get_expression_entity(tp_expression);
2965 if (entity != NULL) {
2966 alignment = get_cparser_entity_alignment(entity);
2970 if (alignment == 0) {
2971 type_t *type = expression->type;
2972 alignment = get_type_alignment(type);
2975 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2976 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2977 tarval *tv = new_tarval_from_long(alignment, mode);
2978 return new_d_Const(dbgi, tv);
2981 static void init_ir_types(void);
2983 static tarval *fold_constant_to_tarval(const expression_t *expression)
2985 assert(is_type_valid(skip_typeref(expression->base.type)));
2987 bool constant_folding_old = constant_folding;
2988 constant_folding = true;
2992 assert(is_constant_expression(expression));
2994 ir_graph *old_current_ir_graph = current_ir_graph;
2995 current_ir_graph = get_const_code_irg();
2997 ir_node *cnst = expression_to_firm(expression);
2998 current_ir_graph = old_current_ir_graph;
3000 if (!is_Const(cnst)) {
3001 panic("couldn't fold constant");
3004 constant_folding = constant_folding_old;
3006 tarval *tv = get_Const_tarval(cnst);
3010 long fold_constant_to_int(const expression_t *expression)
3012 if (expression->kind == EXPR_INVALID)
3015 tarval *tv = fold_constant_to_tarval(expression);
3016 if (!tarval_is_long(tv)) {
3017 panic("result of constant folding is not integer");
3020 return get_tarval_long(tv);
3023 bool fold_constant_to_bool(const expression_t *expression)
3025 if (expression->kind == EXPR_INVALID)
3027 tarval *tv = fold_constant_to_tarval(expression);
3028 return !tarval_is_null(tv);
3031 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
3033 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
3035 /* first try to fold a constant condition */
3036 if (is_constant_expression(expression->condition)) {
3037 bool val = fold_constant_to_bool(expression->condition);
3039 expression_t *true_expression = expression->true_expression;
3040 if (true_expression == NULL)
3041 true_expression = expression->condition;
3042 return expression_to_firm(true_expression);
3044 return expression_to_firm(expression->false_expression);
3048 ir_node *cur_block = get_cur_block();
3050 /* create the true block */
3051 ir_node *true_block = new_immBlock();
3052 set_cur_block(true_block);
3054 ir_node *true_val = expression->true_expression != NULL ?
3055 expression_to_firm(expression->true_expression) : NULL;
3056 ir_node *true_jmp = new_Jmp();
3058 /* create the false block */
3059 ir_node *false_block = new_immBlock();
3060 set_cur_block(false_block);
3062 ir_node *false_val = expression_to_firm(expression->false_expression);
3063 ir_node *false_jmp = new_Jmp();
3065 /* create the condition evaluation */
3066 set_cur_block(cur_block);
3067 ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
3068 if (expression->true_expression == NULL) {
3069 if (cond_expr != NULL && get_irn_mode(cond_expr) != mode_b) {
3070 true_val = cond_expr;
3072 /* Condition ended with a short circuit (&&, ||, !) operation or a
3073 * comparison. Generate a "1" as value for the true branch. */
3074 true_val = new_Const(get_mode_one(mode_Is));
3077 mature_immBlock(true_block);
3078 mature_immBlock(false_block);
3080 /* create the common block */
3081 ir_node *in_cf[2] = { true_jmp, false_jmp };
3082 new_Block(2, in_cf);
3084 /* TODO improve static semantics, so either both or no values are NULL */
3085 if (true_val == NULL || false_val == NULL)
3088 ir_node *in[2] = { true_val, false_val };
3089 ir_mode *mode = get_irn_mode(true_val);
3090 assert(get_irn_mode(false_val) == mode);
3091 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
3097 * Returns an IR-node representing the address of a field.
3099 static ir_node *select_addr(const select_expression_t *expression)
3101 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3103 construct_select_compound(expression);
3105 ir_node *compound_addr = expression_to_firm(expression->compound);
3107 entity_t *entry = expression->compound_entry;
3108 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3109 assert(entry->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
3111 if (constant_folding) {
3112 ir_mode *mode = get_irn_mode(compound_addr);
3113 /* FIXME: here, we need an integer mode with the same number of bits as mode */
3114 ir_node *ofs = new_Const_long(mode_uint, entry->compound_member.offset);
3115 return new_d_Add(dbgi, compound_addr, ofs, mode);
3117 ir_entity *irentity = entry->compound_member.entity;
3118 assert(irentity != NULL);
3119 return new_d_simpleSel(dbgi, new_NoMem(), compound_addr, irentity);
3123 static ir_node *select_to_firm(const select_expression_t *expression)
3125 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3126 ir_node *addr = select_addr(expression);
3127 type_t *type = revert_automatic_type_conversion(
3128 (const expression_t*) expression);
3129 type = skip_typeref(type);
3131 entity_t *entry = expression->compound_entry;
3132 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3133 type_t *entry_type = skip_typeref(entry->declaration.type);
3135 if (entry_type->kind == TYPE_BITFIELD) {
3136 return bitfield_extract_to_firm(expression, addr);
3139 return deref_address(dbgi, type, addr);
3142 /* Values returned by __builtin_classify_type. */
3143 typedef enum gcc_type_class
3149 enumeral_type_class,
3152 reference_type_class,
3156 function_type_class,
3167 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
3169 type_t *type = expr->type_expression->base.type;
3171 /* FIXME gcc returns different values depending on whether compiling C or C++
3172 * e.g. int x[10] is pointer_type_class in C, but array_type_class in C++ */
3175 type = skip_typeref(type);
3176 switch (type->kind) {
3178 const atomic_type_t *const atomic_type = &type->atomic;
3179 switch (atomic_type->akind) {
3180 /* should not be reached */
3181 case ATOMIC_TYPE_INVALID:
3185 /* gcc cannot do that */
3186 case ATOMIC_TYPE_VOID:
3187 tc = void_type_class;
3190 case ATOMIC_TYPE_WCHAR_T: /* gcc handles this as integer */
3191 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
3192 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
3193 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
3194 case ATOMIC_TYPE_SHORT:
3195 case ATOMIC_TYPE_USHORT:
3196 case ATOMIC_TYPE_INT:
3197 case ATOMIC_TYPE_UINT:
3198 case ATOMIC_TYPE_LONG:
3199 case ATOMIC_TYPE_ULONG:
3200 case ATOMIC_TYPE_LONGLONG:
3201 case ATOMIC_TYPE_ULONGLONG:
3202 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
3203 tc = integer_type_class;
3206 case ATOMIC_TYPE_FLOAT:
3207 case ATOMIC_TYPE_DOUBLE:
3208 case ATOMIC_TYPE_LONG_DOUBLE:
3209 tc = real_type_class;
3212 panic("Unexpected atomic type in classify_type_to_firm().");
3215 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
3216 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
3217 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
3218 case TYPE_ARRAY: /* gcc handles this as pointer */
3219 case TYPE_FUNCTION: /* gcc handles this as pointer */
3220 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
3221 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
3222 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
3224 /* gcc handles this as integer */
3225 case TYPE_ENUM: tc = integer_type_class; goto make_const;
3227 /* gcc classifies the referenced type */
3228 case TYPE_REFERENCE: type = type->reference.refers_to; continue;
3231 /* typedef/typeof should be skipped already */
3238 panic("unexpected TYPE classify_type_to_firm().");
3242 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3243 tarval *const tv = new_tarval_from_long(tc, mode_int);
3244 return new_d_Const(dbgi, tv);
3247 static ir_node *function_name_to_firm(
3248 const funcname_expression_t *const expr)
3250 switch(expr->kind) {
3251 case FUNCNAME_FUNCTION:
3252 case FUNCNAME_PRETTY_FUNCTION:
3253 case FUNCNAME_FUNCDNAME:
3254 if (current_function_name == NULL) {
3255 const source_position_t *const src_pos = &expr->base.source_position;
3256 const char *name = current_function_entity->base.symbol->string;
3257 const string_t string = { name, strlen(name) + 1 };
3258 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
3260 return current_function_name;
3261 case FUNCNAME_FUNCSIG:
3262 if (current_funcsig == NULL) {
3263 const source_position_t *const src_pos = &expr->base.source_position;
3264 ir_entity *ent = get_irg_entity(current_ir_graph);
3265 const char *const name = get_entity_ld_name(ent);
3266 const string_t string = { name, strlen(name) + 1 };
3267 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
3269 return current_funcsig;
3271 panic("Unsupported function name");
3274 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
3276 statement_t *statement = expr->statement;
3278 assert(statement->kind == STATEMENT_COMPOUND);
3279 return compound_statement_to_firm(&statement->compound);
3282 static ir_node *va_start_expression_to_firm(
3283 const va_start_expression_t *const expr)
3285 type_t *const type = current_function_entity->declaration.type;
3286 ir_type *const method_type = get_ir_type(type);
3287 int const n = get_method_n_params(method_type) - 1;
3288 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
3289 ir_node *const frame = get_irg_frame(current_ir_graph);
3290 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3291 ir_node *const no_mem = new_NoMem();
3292 ir_node *const arg_sel =
3293 new_d_simpleSel(dbgi, no_mem, frame, parm_ent);
3295 type_t *const param_type = expr->parameter->base.type;
3296 ir_node *const cnst = get_type_size_node(param_type);
3297 ir_mode *const mode = get_irn_mode(cnst);
3298 ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
3299 ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
3300 ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align);
3301 ir_node *const c4 = new_d_And(dbgi, c2, c3, mode);
3302 ir_node *const add = new_d_Add(dbgi, arg_sel, c4, mode_P_data);
3303 set_value_for_expression(expr->ap, add);
3308 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
3310 type_t *const type = expr->base.type;
3311 expression_t *const ap_expr = expr->ap;
3312 ir_node *const ap_addr = expression_to_addr(ap_expr);
3313 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
3314 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3315 ir_node *const res = deref_address(dbgi, type, ap);
3317 ir_node *const cnst = get_type_size_node(expr->base.type);
3318 ir_mode *const mode = get_irn_mode(cnst);
3319 ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
3320 ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
3321 ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align);
3322 ir_node *const c4 = new_d_And(dbgi, c2, c3, mode);
3323 ir_node *const add = new_d_Add(dbgi, ap, c4, mode_P_data);
3325 set_value_for_expression_addr(ap_expr, add, ap_addr);
3331 * Generate Firm for a va_copy expression.
3333 static ir_node *va_copy_expression_to_firm(const va_copy_expression_t *const expr)
3335 ir_node *const src = expression_to_firm(expr->src);
3336 set_value_for_expression(expr->dst, src);
3340 static ir_node *dereference_addr(const unary_expression_t *const expression)
3342 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
3343 return expression_to_firm(expression->value);
3347 * Returns a IR-node representing an lvalue of the given expression.
3349 static ir_node *expression_to_addr(const expression_t *expression)
3351 switch(expression->kind) {
3352 case EXPR_ARRAY_ACCESS:
3353 return array_access_addr(&expression->array_access);
3355 return call_expression_to_firm(&expression->call);
3356 case EXPR_COMPOUND_LITERAL:
3357 return compound_literal_to_firm(&expression->compound_literal);
3358 case EXPR_REFERENCE:
3359 return reference_addr(&expression->reference);
3361 return select_addr(&expression->select);
3362 case EXPR_UNARY_DEREFERENCE:
3363 return dereference_addr(&expression->unary);
3367 panic("trying to get address of non-lvalue");
3370 static ir_node *builtin_constant_to_firm(
3371 const builtin_constant_expression_t *expression)
3373 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3376 if (is_constant_expression(expression->value)) {
3381 return new_Const_long(mode, v);
3384 static ir_node *builtin_types_compatible_to_firm(
3385 const builtin_types_compatible_expression_t *expression)
3387 type_t *const left = get_unqualified_type(skip_typeref(expression->left));
3388 type_t *const right = get_unqualified_type(skip_typeref(expression->right));
3389 long const value = types_compatible(left, right) ? 1 : 0;
3390 ir_mode *const mode = get_ir_mode_arithmetic(expression->base.type);
3391 return new_Const_long(mode, value);
3394 static ir_node *get_label_block(label_t *label)
3396 if (label->block != NULL)
3397 return label->block;
3399 /* beware: might be called from create initializer with current_ir_graph
3400 * set to const_code_irg. */
3401 ir_graph *rem = current_ir_graph;
3402 current_ir_graph = current_function;
3404 ir_node *block = new_immBlock();
3406 label->block = block;
3408 ARR_APP1(label_t *, all_labels, label);
3410 current_ir_graph = rem;
3415 * Pointer to a label. This is used for the
3416 * GNU address-of-label extension.
3418 static ir_node *label_address_to_firm(const label_address_expression_t *label)
3420 dbg_info *dbgi = get_dbg_info(&label->base.source_position);
3421 ir_node *block = get_label_block(label->label);
3422 ir_entity *entity = create_Block_entity(block);
3424 symconst_symbol value;
3425 value.entity_p = entity;
3426 return new_d_SymConst(dbgi, mode_P_code, value, symconst_addr_ent);
3430 * creates firm nodes for an expression. The difference between this function
3431 * and expression_to_firm is, that this version might produce mode_b nodes
3432 * instead of mode_Is.
3434 static ir_node *_expression_to_firm(const expression_t *expression)
3437 if (!constant_folding) {
3438 assert(!expression->base.transformed);
3439 ((expression_t*) expression)->base.transformed = true;
3443 switch (expression->kind) {
3444 case EXPR_CHARACTER_CONSTANT:
3445 return character_constant_to_firm(&expression->conste);
3446 case EXPR_WIDE_CHARACTER_CONSTANT:
3447 return wide_character_constant_to_firm(&expression->conste);
3449 return const_to_firm(&expression->conste);
3450 case EXPR_STRING_LITERAL:
3451 return string_literal_to_firm(&expression->string);
3452 case EXPR_WIDE_STRING_LITERAL:
3453 return wide_string_literal_to_firm(&expression->wide_string);
3454 case EXPR_REFERENCE:
3455 return reference_expression_to_firm(&expression->reference);
3456 case EXPR_REFERENCE_ENUM_VALUE:
3457 return reference_expression_enum_value_to_firm(&expression->reference);
3459 return call_expression_to_firm(&expression->call);
3461 return unary_expression_to_firm(&expression->unary);
3463 return binary_expression_to_firm(&expression->binary);
3464 case EXPR_ARRAY_ACCESS:
3465 return array_access_to_firm(&expression->array_access);
3467 return sizeof_to_firm(&expression->typeprop);
3469 return alignof_to_firm(&expression->typeprop);
3470 case EXPR_CONDITIONAL:
3471 return conditional_to_firm(&expression->conditional);
3473 return select_to_firm(&expression->select);
3474 case EXPR_CLASSIFY_TYPE:
3475 return classify_type_to_firm(&expression->classify_type);
3477 return function_name_to_firm(&expression->funcname);
3478 case EXPR_STATEMENT:
3479 return statement_expression_to_firm(&expression->statement);
3481 return va_start_expression_to_firm(&expression->va_starte);
3483 return va_arg_expression_to_firm(&expression->va_arge);
3485 return va_copy_expression_to_firm(&expression->va_copye);
3486 case EXPR_BUILTIN_CONSTANT_P:
3487 return builtin_constant_to_firm(&expression->builtin_constant);
3488 case EXPR_BUILTIN_TYPES_COMPATIBLE_P:
3489 return builtin_types_compatible_to_firm(&expression->builtin_types_compatible);
3491 return offsetof_to_firm(&expression->offsetofe);
3492 case EXPR_COMPOUND_LITERAL:
3493 return compound_literal_to_firm(&expression->compound_literal);
3494 case EXPR_LABEL_ADDRESS:
3495 return label_address_to_firm(&expression->label_address);
3501 panic("invalid expression found");
3505 * Check if a given expression is a GNU __builtin_expect() call.
3507 static bool is_builtin_expect(const expression_t *expression)
3509 if (expression->kind != EXPR_CALL)
3512 expression_t *function = expression->call.function;
3513 if (function->kind != EXPR_REFERENCE)
3515 reference_expression_t *ref = &function->reference;
3516 if (ref->entity->kind != ENTITY_FUNCTION ||
3517 ref->entity->function.btk != bk_gnu_builtin_expect)
3523 static bool produces_mode_b(const expression_t *expression)
3525 switch (expression->kind) {
3526 case EXPR_BINARY_EQUAL:
3527 case EXPR_BINARY_NOTEQUAL:
3528 case EXPR_BINARY_LESS:
3529 case EXPR_BINARY_LESSEQUAL:
3530 case EXPR_BINARY_GREATER:
3531 case EXPR_BINARY_GREATEREQUAL:
3532 case EXPR_BINARY_ISGREATER:
3533 case EXPR_BINARY_ISGREATEREQUAL:
3534 case EXPR_BINARY_ISLESS:
3535 case EXPR_BINARY_ISLESSEQUAL:
3536 case EXPR_BINARY_ISLESSGREATER:
3537 case EXPR_BINARY_ISUNORDERED:
3538 case EXPR_UNARY_NOT:
3542 if (is_builtin_expect(expression)) {
3543 expression_t *argument = expression->call.arguments->expression;
3544 return produces_mode_b(argument);
3547 case EXPR_BINARY_COMMA:
3548 return produces_mode_b(expression->binary.right);
3555 static ir_node *expression_to_firm(const expression_t *expression)
3557 if (!produces_mode_b(expression)) {
3558 ir_node *res = _expression_to_firm(expression);
3559 assert(res == NULL || get_irn_mode(res) != mode_b);
3563 if (is_constant_expression(expression)) {
3564 ir_node *res = _expression_to_firm(expression);
3565 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3566 assert(is_Const(res));
3567 if (is_Const_null(res)) {
3568 return new_Const_long(mode, 0);
3570 return new_Const_long(mode, 1);
3574 /* we have to produce a 0/1 from the mode_b expression */
3575 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3576 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3577 return produce_condition_result(expression, mode, dbgi);
3581 * create a short-circuit expression evaluation that tries to construct
3582 * efficient control flow structures for &&, || and ! expressions
3584 static ir_node *create_condition_evaluation(const expression_t *expression,
3585 ir_node *true_block,
3586 ir_node *false_block)
3588 switch(expression->kind) {
3589 case EXPR_UNARY_NOT: {
3590 const unary_expression_t *unary_expression = &expression->unary;
3591 create_condition_evaluation(unary_expression->value, false_block,
3595 case EXPR_BINARY_LOGICAL_AND: {
3596 const binary_expression_t *binary_expression = &expression->binary;
3598 ir_node *extra_block = new_immBlock();
3599 create_condition_evaluation(binary_expression->left, extra_block,
3601 mature_immBlock(extra_block);
3602 set_cur_block(extra_block);
3603 create_condition_evaluation(binary_expression->right, true_block,
3607 case EXPR_BINARY_LOGICAL_OR: {
3608 const binary_expression_t *binary_expression = &expression->binary;
3610 ir_node *extra_block = new_immBlock();
3611 create_condition_evaluation(binary_expression->left, true_block,
3613 mature_immBlock(extra_block);
3614 set_cur_block(extra_block);
3615 create_condition_evaluation(binary_expression->right, true_block,
3623 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3624 ir_node *cond_expr = _expression_to_firm(expression);
3625 ir_node *condition = create_conv(dbgi, cond_expr, mode_b);
3626 ir_node *cond = new_d_Cond(dbgi, condition);
3627 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3628 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3630 /* set branch prediction info based on __builtin_expect */
3631 if (is_builtin_expect(expression) && is_Cond(cond)) {
3632 call_argument_t *argument = expression->call.arguments->next;
3633 if (is_constant_expression(argument->expression)) {
3634 bool cnst = fold_constant_to_bool(argument->expression);
3635 cond_jmp_predicate pred;
3637 if (cnst == false) {
3638 pred = COND_JMP_PRED_FALSE;
3640 pred = COND_JMP_PRED_TRUE;
3642 set_Cond_jmp_pred(cond, pred);
3646 add_immBlock_pred(true_block, true_proj);
3647 add_immBlock_pred(false_block, false_proj);
3649 set_cur_block(NULL);
3653 static void create_variable_entity(entity_t *variable,
3654 declaration_kind_t declaration_kind,
3655 ir_type *parent_type)
3657 assert(variable->kind == ENTITY_VARIABLE);
3658 type_t *type = skip_typeref(variable->declaration.type);
3660 ident *const id = new_id_from_str(variable->base.symbol->string);
3661 ir_type *const irtype = get_ir_type(type);
3662 dbg_info *const dbgi = get_dbg_info(&variable->base.source_position);
3663 ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi);
3664 unsigned alignment = variable->declaration.alignment;
3666 set_entity_alignment(irentity, alignment);
3668 handle_decl_modifiers(irentity, variable);
3670 variable->declaration.kind = (unsigned char) declaration_kind;
3671 variable->variable.v.entity = irentity;
3672 set_entity_variability(irentity, variability_uninitialized);
3673 set_entity_ld_ident(irentity, create_ld_ident(variable));
3675 if (parent_type == get_tls_type())
3676 set_entity_allocation(irentity, allocation_automatic);
3677 else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3678 set_entity_allocation(irentity, allocation_static);
3680 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3681 set_entity_volatility(irentity, volatility_is_volatile);
3686 typedef struct type_path_entry_t type_path_entry_t;
3687 struct type_path_entry_t {
3689 ir_initializer_t *initializer;
3691 entity_t *compound_entry;
3694 typedef struct type_path_t type_path_t;
3695 struct type_path_t {
3696 type_path_entry_t *path;
3701 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3703 size_t len = ARR_LEN(path->path);
3705 for (size_t i = 0; i < len; ++i) {
3706 const type_path_entry_t *entry = & path->path[i];
3708 type_t *type = skip_typeref(entry->type);
3709 if (is_type_compound(type)) {
3710 fprintf(stderr, ".%s", entry->compound_entry->base.symbol->string);
3711 } else if (is_type_array(type)) {
3712 fprintf(stderr, "[%u]", (unsigned) entry->index);
3714 fprintf(stderr, "-INVALID-");
3717 fprintf(stderr, " (");
3718 print_type(path->top_type);
3719 fprintf(stderr, ")");
3722 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3724 size_t len = ARR_LEN(path->path);
3726 return & path->path[len-1];
3729 static type_path_entry_t *append_to_type_path(type_path_t *path)
3731 size_t len = ARR_LEN(path->path);
3732 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3734 type_path_entry_t *result = & path->path[len];
3735 memset(result, 0, sizeof(result[0]));
3739 static size_t get_compound_member_count(const compound_type_t *type)
3741 compound_t *compound = type->compound;
3742 size_t n_members = 0;
3743 entity_t *member = compound->members.entities;
3744 for ( ; member != NULL; member = member->base.next) {
3751 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3753 type_t *orig_top_type = path->top_type;
3754 type_t *top_type = skip_typeref(orig_top_type);
3756 assert(is_type_compound(top_type) || is_type_array(top_type));
3758 if (ARR_LEN(path->path) == 0) {
3761 type_path_entry_t *top = get_type_path_top(path);
3762 ir_initializer_t *initializer = top->initializer;
3763 return get_initializer_compound_value(initializer, top->index);
3767 static void descend_into_subtype(type_path_t *path)
3769 type_t *orig_top_type = path->top_type;
3770 type_t *top_type = skip_typeref(orig_top_type);
3772 assert(is_type_compound(top_type) || is_type_array(top_type));
3774 ir_initializer_t *initializer = get_initializer_entry(path);
3776 type_path_entry_t *top = append_to_type_path(path);
3777 top->type = top_type;
3781 if (is_type_compound(top_type)) {
3782 compound_t *compound = top_type->compound.compound;
3783 entity_t *entry = compound->members.entities;
3785 top->compound_entry = entry;
3787 len = get_compound_member_count(&top_type->compound);
3788 if (entry != NULL) {
3789 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3790 path->top_type = entry->declaration.type;
3793 assert(is_type_array(top_type));
3794 assert(top_type->array.size > 0);
3797 path->top_type = top_type->array.element_type;
3798 len = top_type->array.size;
3800 if (initializer == NULL
3801 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3802 initializer = create_initializer_compound(len);
3803 /* we have to set the entry at the 2nd latest path entry... */
3804 size_t path_len = ARR_LEN(path->path);
3805 assert(path_len >= 1);
3807 type_path_entry_t *entry = & path->path[path_len-2];
3808 ir_initializer_t *tinitializer = entry->initializer;
3809 set_initializer_compound_value(tinitializer, entry->index,
3813 top->initializer = initializer;
3816 static void ascend_from_subtype(type_path_t *path)
3818 type_path_entry_t *top = get_type_path_top(path);
3820 path->top_type = top->type;
3822 size_t len = ARR_LEN(path->path);
3823 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3826 static void walk_designator(type_path_t *path, const designator_t *designator)
3828 /* designators start at current object type */
3829 ARR_RESIZE(type_path_entry_t, path->path, 1);
3831 for ( ; designator != NULL; designator = designator->next) {
3832 type_path_entry_t *top = get_type_path_top(path);
3833 type_t *orig_type = top->type;
3834 type_t *type = skip_typeref(orig_type);
3836 if (designator->symbol != NULL) {
3837 assert(is_type_compound(type));
3839 symbol_t *symbol = designator->symbol;
3841 compound_t *compound = type->compound.compound;
3842 entity_t *iter = compound->members.entities;
3843 for ( ; iter != NULL; iter = iter->base.next, ++index) {
3844 if (iter->base.symbol == symbol) {
3845 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
3849 assert(iter != NULL);
3851 /* revert previous initialisations of other union elements */
3852 if (type->kind == TYPE_COMPOUND_UNION) {
3853 ir_initializer_t *initializer = top->initializer;
3854 if (initializer != NULL
3855 && get_initializer_kind(initializer) == IR_INITIALIZER_COMPOUND) {
3856 /* are we writing to a new element? */
3857 ir_initializer_t *oldi
3858 = get_initializer_compound_value(initializer, index);
3859 if (get_initializer_kind(oldi) == IR_INITIALIZER_NULL) {
3860 /* clear initializer */
3862 = get_initializer_compound_n_entries(initializer);
3863 ir_initializer_t *nulli = get_initializer_null();
3864 for (size_t i = 0; i < len; ++i) {
3865 set_initializer_compound_value(initializer, i,
3872 top->type = orig_type;
3873 top->compound_entry = iter;
3875 orig_type = iter->declaration.type;
3877 expression_t *array_index = designator->array_index;
3878 assert(designator->array_index != NULL);
3879 assert(is_type_array(type));
3881 long index = fold_constant_to_int(array_index);
3884 if (type->array.size_constant) {
3885 long array_size = type->array.size;
3886 assert(index < array_size);
3890 top->type = orig_type;
3891 top->index = (size_t) index;
3892 orig_type = type->array.element_type;
3894 path->top_type = orig_type;
3896 if (designator->next != NULL) {
3897 descend_into_subtype(path);
3901 path->invalid = false;
3904 static void advance_current_object(type_path_t *path)
3906 if (path->invalid) {
3907 /* TODO: handle this... */
3908 panic("invalid initializer in ast2firm (excessive elements)");
3911 type_path_entry_t *top = get_type_path_top(path);
3913 type_t *type = skip_typeref(top->type);
3914 if (is_type_union(type)) {
3915 /* only the first element is initialized in unions */
3916 top->compound_entry = NULL;
3917 } else if (is_type_struct(type)) {
3918 entity_t *entry = top->compound_entry;
3921 entry = entry->base.next;
3922 top->compound_entry = entry;
3923 if (entry != NULL) {
3924 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3925 path->top_type = entry->declaration.type;
3929 assert(is_type_array(type));
3932 if (!type->array.size_constant || top->index < type->array.size) {
3937 /* we're past the last member of the current sub-aggregate, try if we
3938 * can ascend in the type hierarchy and continue with another subobject */
3939 size_t len = ARR_LEN(path->path);
3942 ascend_from_subtype(path);
3943 advance_current_object(path);
3945 path->invalid = true;
3950 static ir_initializer_t *create_ir_initializer(
3951 const initializer_t *initializer, type_t *type);
3953 static ir_initializer_t *create_ir_initializer_value(
3954 const initializer_value_t *initializer)
3956 if (is_type_compound(initializer->value->base.type)) {
3957 panic("initializer creation for compounds not implemented yet");
3959 type_t *type = initializer->value->base.type;
3960 expression_t *expr = initializer->value;
3961 if (initializer_use_bitfield_basetype) {
3962 type_t *skipped = skip_typeref(type);
3963 if (skipped->kind == TYPE_BITFIELD) {
3964 /* remove the bitfield cast... */
3965 assert(expr->kind == EXPR_UNARY_CAST_IMPLICIT);
3966 expr = expr->unary.value;
3967 type = skipped->bitfield.base_type;
3970 ir_node *value = expression_to_firm(expr);
3971 ir_mode *mode = get_ir_mode_storage(type);
3972 value = create_conv(NULL, value, mode);
3973 return create_initializer_const(value);
3976 /** test wether type can be initialized by a string constant */
3977 static bool is_string_type(type_t *type)
3980 if (is_type_pointer(type)) {
3981 inner = skip_typeref(type->pointer.points_to);
3982 } else if(is_type_array(type)) {
3983 inner = skip_typeref(type->array.element_type);
3988 return is_type_integer(inner);
3991 static ir_initializer_t *create_ir_initializer_list(
3992 const initializer_list_t *initializer, type_t *type)
3995 memset(&path, 0, sizeof(path));
3996 path.top_type = type;
3997 path.path = NEW_ARR_F(type_path_entry_t, 0);
3999 descend_into_subtype(&path);
4001 for (size_t i = 0; i < initializer->len; ++i) {
4002 const initializer_t *sub_initializer = initializer->initializers[i];
4004 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
4005 walk_designator(&path, sub_initializer->designator.designator);
4009 if (sub_initializer->kind == INITIALIZER_VALUE) {
4010 /* we might have to descend into types until we're at a scalar
4013 type_t *orig_top_type = path.top_type;
4014 type_t *top_type = skip_typeref(orig_top_type);
4016 if (is_type_scalar(top_type))
4018 descend_into_subtype(&path);
4020 } else if (sub_initializer->kind == INITIALIZER_STRING
4021 || sub_initializer->kind == INITIALIZER_WIDE_STRING) {
4022 /* we might have to descend into types until we're at a scalar
4025 type_t *orig_top_type = path.top_type;
4026 type_t *top_type = skip_typeref(orig_top_type);
4028 if (is_string_type(top_type))
4030 descend_into_subtype(&path);
4034 ir_initializer_t *sub_irinitializer
4035 = create_ir_initializer(sub_initializer, path.top_type);
4037 size_t path_len = ARR_LEN(path.path);
4038 assert(path_len >= 1);
4039 type_path_entry_t *entry = & path.path[path_len-1];
4040 ir_initializer_t *tinitializer = entry->initializer;
4041 set_initializer_compound_value(tinitializer, entry->index,
4044 advance_current_object(&path);
4047 assert(ARR_LEN(path.path) >= 1);
4048 ir_initializer_t *result = path.path[0].initializer;
4049 DEL_ARR_F(path.path);
4054 static ir_initializer_t *create_ir_initializer_string(
4055 const initializer_string_t *initializer, type_t *type)
4057 type = skip_typeref(type);
4059 size_t string_len = initializer->string.size;
4060 assert(type->kind == TYPE_ARRAY);
4061 assert(type->array.size_constant);
4062 size_t len = type->array.size;
4063 ir_initializer_t *irinitializer = create_initializer_compound(len);
4065 const char *string = initializer->string.begin;
4066 ir_mode *mode = get_ir_mode_storage(type->array.element_type);
4068 for (size_t i = 0; i < len; ++i) {
4073 tarval *tv = new_tarval_from_long(c, mode);
4074 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
4076 set_initializer_compound_value(irinitializer, i, char_initializer);
4079 return irinitializer;
4082 static ir_initializer_t *create_ir_initializer_wide_string(
4083 const initializer_wide_string_t *initializer, type_t *type)
4085 size_t string_len = initializer->string.size;
4086 assert(type->kind == TYPE_ARRAY);
4087 assert(type->array.size_constant);
4088 size_t len = type->array.size;
4089 ir_initializer_t *irinitializer = create_initializer_compound(len);
4091 const wchar_rep_t *string = initializer->string.begin;
4092 ir_mode *mode = get_type_mode(ir_type_wchar_t);
4094 for (size_t i = 0; i < len; ++i) {
4096 if (i < string_len) {
4099 tarval *tv = new_tarval_from_long(c, mode);
4100 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
4102 set_initializer_compound_value(irinitializer, i, char_initializer);
4105 return irinitializer;
4108 static ir_initializer_t *create_ir_initializer(
4109 const initializer_t *initializer, type_t *type)
4111 switch(initializer->kind) {
4112 case INITIALIZER_STRING:
4113 return create_ir_initializer_string(&initializer->string, type);
4115 case INITIALIZER_WIDE_STRING:
4116 return create_ir_initializer_wide_string(&initializer->wide_string,
4119 case INITIALIZER_LIST:
4120 return create_ir_initializer_list(&initializer->list, type);
4122 case INITIALIZER_VALUE:
4123 return create_ir_initializer_value(&initializer->value);
4125 case INITIALIZER_DESIGNATOR:
4126 panic("unexpected designator initializer found");
4128 panic("unknown initializer");
4131 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
4132 ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr)
4134 switch(get_initializer_kind(initializer)) {
4135 case IR_INITIALIZER_NULL: {
4136 /* NULL is undefined for dynamic initializers */
4139 case IR_INITIALIZER_CONST: {
4140 ir_node *node = get_initializer_const_value(initializer);
4141 ir_mode *mode = get_irn_mode(node);
4142 ir_type *ent_type = get_entity_type(entity);
4144 /* is it a bitfield type? */
4145 if (is_Primitive_type(ent_type) &&
4146 get_primitive_base_type(ent_type) != NULL) {
4147 bitfield_store_to_firm(dbgi, entity, base_addr, node, false);
4151 assert(get_type_mode(type) == mode);
4152 ir_node *mem = get_store();
4153 ir_node *store = new_d_Store(dbgi, mem, base_addr, node, cons_none);
4154 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4158 case IR_INITIALIZER_TARVAL: {
4159 tarval *tv = get_initializer_tarval_value(initializer);
4160 ir_mode *mode = get_tarval_mode(tv);
4161 ir_node *cnst = new_d_Const(dbgi, tv);
4162 ir_type *ent_type = get_entity_type(entity);
4164 /* is it a bitfield type? */
4165 if (is_Primitive_type(ent_type) &&
4166 get_primitive_base_type(ent_type) != NULL) {
4167 bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false);
4171 assert(get_type_mode(type) == mode);
4172 ir_node *mem = get_store();
4173 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst, cons_none);
4174 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4178 case IR_INITIALIZER_COMPOUND: {
4179 assert(is_compound_type(type));
4181 if (is_Array_type(type)) {
4182 assert(has_array_upper_bound(type, 0));
4183 n_members = get_array_upper_bound_int(type, 0);
4185 n_members = get_compound_n_members(type);
4188 if (get_initializer_compound_n_entries(initializer)
4189 != (unsigned) n_members)
4190 panic("initializer doesn't match compound type");
4192 for (int i = 0; i < n_members; ++i) {
4195 ir_entity *sub_entity;
4196 if (is_Array_type(type)) {
4197 tarval *index_tv = new_tarval_from_long(i, mode_uint);
4198 ir_node *cnst = new_d_Const(dbgi, index_tv);
4199 ir_node *in[1] = { cnst };
4200 irtype = get_array_element_type(type);
4201 sub_entity = get_array_element_entity(type);
4202 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
4205 sub_entity = get_compound_member(type, i);
4206 irtype = get_entity_type(sub_entity);
4207 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
4211 ir_initializer_t *sub_init
4212 = get_initializer_compound_value(initializer, i);
4214 create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
4221 panic("invalid IR_INITIALIZER found");
4224 static void create_dynamic_initializer(ir_initializer_t *initializer,
4225 dbg_info *dbgi, ir_entity *entity)
4227 ir_node *frame = get_irg_frame(current_ir_graph);
4228 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
4229 ir_type *type = get_entity_type(entity);
4231 create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
4234 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
4235 ir_entity *entity, type_t *type)
4237 ir_node *memory = get_store();
4238 ir_node *nomem = new_NoMem();
4239 ir_node *frame = get_irg_frame(current_ir_graph);
4240 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
4242 if (initializer->kind == INITIALIZER_VALUE) {
4243 initializer_value_t *initializer_value = &initializer->value;
4245 ir_node *value = expression_to_firm(initializer_value->value);
4246 type = skip_typeref(type);
4247 assign_value(dbgi, addr, type, value);
4251 if (!is_constant_initializer(initializer)) {
4252 bool old_initializer_use_bitfield_basetype
4253 = initializer_use_bitfield_basetype;
4254 initializer_use_bitfield_basetype = true;
4255 ir_initializer_t *irinitializer
4256 = create_ir_initializer(initializer, type);
4257 initializer_use_bitfield_basetype
4258 = old_initializer_use_bitfield_basetype;
4260 create_dynamic_initializer(irinitializer, dbgi, entity);
4264 /* create the ir_initializer */
4265 ir_graph *const old_current_ir_graph = current_ir_graph;
4266 current_ir_graph = get_const_code_irg();
4268 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
4270 assert(current_ir_graph == get_const_code_irg());
4271 current_ir_graph = old_current_ir_graph;
4273 /* create a "template" entity which is copied to the entity on the stack */
4274 ident *const id = id_unique("initializer.%u");
4275 ir_type *const irtype = get_ir_type(type);
4276 ir_type *const global_type = get_glob_type();
4277 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
4278 set_entity_ld_ident(init_entity, id);
4280 set_entity_variability(init_entity, variability_initialized);
4281 set_entity_visibility(init_entity, visibility_local);
4282 set_entity_allocation(init_entity, allocation_static);
4284 set_entity_initializer(init_entity, irinitializer);
4286 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
4287 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
4289 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
4290 set_store(copyb_mem);
4293 static void create_initializer_local_variable_entity(entity_t *entity)
4295 assert(entity->kind == ENTITY_VARIABLE);
4296 initializer_t *initializer = entity->variable.initializer;
4297 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4298 ir_entity *irentity = entity->variable.v.entity;
4299 type_t *type = entity->declaration.type;
4301 create_local_initializer(initializer, dbgi, irentity, type);
4304 static void create_variable_initializer(entity_t *entity)
4306 assert(entity->kind == ENTITY_VARIABLE);
4307 initializer_t *initializer = entity->variable.initializer;
4308 if (initializer == NULL)
4311 declaration_kind_t declaration_kind
4312 = (declaration_kind_t) entity->declaration.kind;
4313 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
4314 create_initializer_local_variable_entity(entity);
4318 type_t *type = entity->declaration.type;
4319 type_qualifiers_t tq = get_type_qualifier(type, true);
4321 if (initializer->kind == INITIALIZER_VALUE) {
4322 initializer_value_t *initializer_value = &initializer->value;
4323 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4325 ir_node *value = expression_to_firm(initializer_value->value);
4327 type_t *type = initializer_value->value->base.type;
4328 ir_mode *mode = get_ir_mode_storage(type);
4329 value = create_conv(dbgi, value, mode);
4330 value = do_strict_conv(dbgi, value);
4332 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
4333 set_value(entity->variable.v.value_number, value);
4335 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4337 ir_entity *irentity = entity->variable.v.entity;
4339 if (tq & TYPE_QUALIFIER_CONST) {
4340 set_entity_variability(irentity, variability_constant);
4342 set_entity_variability(irentity, variability_initialized);
4344 set_atomic_ent_value(irentity, value);
4347 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
4348 declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4350 ir_entity *irentity = entity->variable.v.entity;
4351 ir_initializer_t *irinitializer
4352 = create_ir_initializer(initializer, type);
4354 if (tq & TYPE_QUALIFIER_CONST) {
4355 set_entity_variability(irentity, variability_constant);
4357 set_entity_variability(irentity, variability_initialized);
4359 set_entity_initializer(irentity, irinitializer);
4363 static void create_variable_length_array(entity_t *entity)
4365 assert(entity->kind == ENTITY_VARIABLE);
4366 assert(entity->variable.initializer == NULL);
4368 entity->declaration.kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
4369 entity->variable.v.vla_base = NULL;
4371 /* TODO: record VLA somewhere so we create the free node when we leave
4375 static void allocate_variable_length_array(entity_t *entity)
4377 assert(entity->kind == ENTITY_VARIABLE);
4378 assert(entity->variable.initializer == NULL);
4379 assert(get_cur_block() != NULL);
4381 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4382 type_t *type = entity->declaration.type;
4383 ir_type *el_type = get_ir_type(type->array.element_type);
4385 /* make sure size_node is calculated */
4386 get_type_size_node(type);
4387 ir_node *elems = type->array.size_node;
4388 ir_node *mem = get_store();
4389 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
4391 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
4392 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
4395 assert(entity->declaration.kind == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
4396 entity->variable.v.vla_base = addr;
4400 * Creates a Firm local variable from a declaration.
4402 static void create_local_variable(entity_t *entity)
4404 assert(entity->kind == ENTITY_VARIABLE);
4405 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4407 bool needs_entity = entity->variable.address_taken;
4408 type_t *type = skip_typeref(entity->declaration.type);
4410 /* is it a variable length array? */
4411 if (is_type_array(type) && !type->array.size_constant) {
4412 create_variable_length_array(entity);
4414 } else if (is_type_array(type) || is_type_compound(type)) {
4415 needs_entity = true;
4416 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4417 needs_entity = true;
4421 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
4422 create_variable_entity(entity,
4423 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
4426 entity->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
4427 entity->variable.v.value_number = next_value_number_function;
4428 set_irg_loc_description(current_ir_graph, next_value_number_function,
4430 ++next_value_number_function;
4434 static void create_local_static_variable(entity_t *entity)
4436 assert(entity->kind == ENTITY_VARIABLE);
4437 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4439 type_t *type = skip_typeref(entity->declaration.type);
4440 ir_type *const var_type = entity->variable.thread_local ?
4441 get_tls_type() : get_glob_type();
4442 ir_type *const irtype = get_ir_type(type);
4443 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
4445 size_t l = strlen(entity->base.symbol->string);
4446 char buf[l + sizeof(".%u")];
4447 snprintf(buf, sizeof(buf), "%s.%%u", entity->base.symbol->string);
4448 ident *const id = id_unique(buf);
4450 ir_entity *const irentity = new_d_entity(var_type, id, irtype, dbgi);
4452 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4453 set_entity_volatility(irentity, volatility_is_volatile);
4456 entity->declaration.kind = DECLARATION_KIND_GLOBAL_VARIABLE;
4457 entity->variable.v.entity = irentity;
4459 set_entity_ld_ident(irentity, id);
4460 set_entity_variability(irentity, variability_uninitialized);
4461 set_entity_visibility(irentity, visibility_local);
4462 set_entity_allocation(irentity, entity->variable.thread_local ?
4463 allocation_automatic : allocation_static);
4465 ir_graph *const old_current_ir_graph = current_ir_graph;
4466 current_ir_graph = get_const_code_irg();
4468 create_variable_initializer(entity);
4470 assert(current_ir_graph == get_const_code_irg());
4471 current_ir_graph = old_current_ir_graph;
4476 static void return_statement_to_firm(return_statement_t *statement)
4478 if (get_cur_block() == NULL)
4481 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4482 type_t *type = current_function_entity->declaration.type;
4483 ir_type *func_irtype = get_ir_type(type);
4488 if (get_method_n_ress(func_irtype) > 0) {
4489 ir_type *res_type = get_method_res_type(func_irtype, 0);
4491 if (statement->value != NULL) {
4492 ir_node *node = expression_to_firm(statement->value);
4493 if (!is_compound_type(res_type)) {
4494 type_t *type = statement->value->base.type;
4495 ir_mode *mode = get_ir_mode_storage(type);
4496 node = create_conv(dbgi, node, mode);
4497 node = do_strict_conv(dbgi, node);
4502 if (is_compound_type(res_type)) {
4505 mode = get_type_mode(res_type);
4507 in[0] = new_Unknown(mode);
4511 /* build return_value for its side effects */
4512 if (statement->value != NULL) {
4513 expression_to_firm(statement->value);
4518 ir_node *store = get_store();
4519 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
4521 ir_node *end_block = get_irg_end_block(current_ir_graph);
4522 add_immBlock_pred(end_block, ret);
4524 set_cur_block(NULL);
4527 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
4529 if (get_cur_block() == NULL)
4532 return expression_to_firm(statement->expression);
4535 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
4537 entity_t *entity = compound->scope.entities;
4538 for ( ; entity != NULL; entity = entity->base.next) {
4539 if (!is_declaration(entity))
4542 create_local_declaration(entity);
4545 ir_node *result = NULL;
4546 statement_t *statement = compound->statements;
4547 for ( ; statement != NULL; statement = statement->base.next) {
4548 if (statement->base.next == NULL
4549 && statement->kind == STATEMENT_EXPRESSION) {
4550 result = expression_statement_to_firm(
4551 &statement->expression);
4554 statement_to_firm(statement);
4560 static void create_global_variable(entity_t *entity)
4562 assert(entity->kind == ENTITY_VARIABLE);
4565 switch ((storage_class_tag_t)entity->declaration.storage_class) {
4566 case STORAGE_CLASS_STATIC: vis = visibility_local; break;
4567 case STORAGE_CLASS_EXTERN: vis = visibility_external_allocated; break;
4568 case STORAGE_CLASS_NONE: vis = visibility_external_visible; break;
4570 default: panic("Invalid storage class for global variable");
4573 ir_type *var_type = entity->variable.thread_local ?
4574 get_tls_type() : get_glob_type();
4575 create_variable_entity(entity,
4576 DECLARATION_KIND_GLOBAL_VARIABLE, var_type);
4577 set_entity_visibility(entity->variable.v.entity, vis);
4580 static void create_local_declaration(entity_t *entity)
4582 assert(is_declaration(entity));
4584 /* construct type */
4585 (void) get_ir_type(entity->declaration.type);
4586 if (entity->base.symbol == NULL) {
4590 switch ((storage_class_tag_t) entity->declaration.storage_class) {
4591 case STORAGE_CLASS_STATIC:
4592 if (entity->kind == ENTITY_FUNCTION) {
4593 (void)get_function_entity(entity, NULL);
4595 create_local_static_variable(entity);
4598 case STORAGE_CLASS_EXTERN:
4599 if (entity->kind == ENTITY_FUNCTION) {
4600 assert(entity->function.statement == NULL);
4601 (void)get_function_entity(entity, NULL);
4603 create_global_variable(entity);
4604 create_variable_initializer(entity);
4607 case STORAGE_CLASS_NONE:
4608 case STORAGE_CLASS_AUTO:
4609 case STORAGE_CLASS_REGISTER:
4610 if (entity->kind == ENTITY_FUNCTION) {
4611 if (entity->function.statement != NULL) {
4612 ir_type *owner = get_irg_frame_type(current_ir_graph);
4613 (void)get_function_entity(entity, owner);
4614 entity->declaration.kind = DECLARATION_KIND_INNER_FUNCTION;
4615 enqueue_inner_function(entity);
4617 (void)get_function_entity(entity, NULL);
4620 create_local_variable(entity);
4623 case STORAGE_CLASS_TYPEDEF:
4626 panic("invalid storage class found");
4629 static void initialize_local_declaration(entity_t *entity)
4631 if (entity->base.symbol == NULL)
4634 // no need to emit code in dead blocks
4635 if (entity->declaration.storage_class != STORAGE_CLASS_STATIC
4636 && get_cur_block() == NULL)
4639 switch ((declaration_kind_t) entity->declaration.kind) {
4640 case DECLARATION_KIND_LOCAL_VARIABLE:
4641 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4642 create_variable_initializer(entity);
4645 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4646 allocate_variable_length_array(entity);
4649 case DECLARATION_KIND_COMPOUND_MEMBER:
4650 case DECLARATION_KIND_GLOBAL_VARIABLE:
4651 case DECLARATION_KIND_FUNCTION:
4652 case DECLARATION_KIND_INNER_FUNCTION:
4655 case DECLARATION_KIND_PARAMETER:
4656 case DECLARATION_KIND_PARAMETER_ENTITY:
4657 panic("can't initialize parameters");
4659 case DECLARATION_KIND_UNKNOWN:
4660 panic("can't initialize unknown declaration");
4662 panic("invalid declaration kind");
4665 static void declaration_statement_to_firm(declaration_statement_t *statement)
4667 entity_t *entity = statement->declarations_begin;
4671 entity_t *const last = statement->declarations_end;
4672 for ( ;; entity = entity->base.next) {
4673 if (is_declaration(entity)) {
4674 initialize_local_declaration(entity);
4675 } else if (entity->kind == ENTITY_TYPEDEF) {
4676 /* §6.7.7:3 Any array size expressions associated with variable length
4677 * array declarators are evaluated each time the declaration of the
4678 * typedef name is reached in the order of execution. */
4679 type_t *const type = skip_typeref(entity->typedefe.type);
4680 if (is_type_array(type) && type->array.is_vla)
4681 get_vla_size(&type->array);
4688 static void if_statement_to_firm(if_statement_t *statement)
4690 ir_node *cur_block = get_cur_block();
4692 ir_node *fallthrough_block = NULL;
4694 /* the true (blocks) */
4695 ir_node *true_block = NULL;
4696 if (statement->true_statement != NULL) {
4697 true_block = new_immBlock();
4698 set_cur_block(true_block);
4699 statement_to_firm(statement->true_statement);
4700 if (get_cur_block() != NULL) {
4701 ir_node *jmp = new_Jmp();
4702 if (fallthrough_block == NULL)
4703 fallthrough_block = new_immBlock();
4704 add_immBlock_pred(fallthrough_block, jmp);
4708 /* the false (blocks) */
4709 ir_node *false_block = NULL;
4710 if (statement->false_statement != NULL) {
4711 false_block = new_immBlock();
4712 set_cur_block(false_block);
4714 statement_to_firm(statement->false_statement);
4715 if (get_cur_block() != NULL) {
4716 ir_node *jmp = new_Jmp();
4717 if (fallthrough_block == NULL)
4718 fallthrough_block = new_immBlock();
4719 add_immBlock_pred(fallthrough_block, jmp);
4723 /* create the condition */
4724 if (cur_block != NULL) {
4725 if (true_block == NULL || false_block == NULL) {
4726 if (fallthrough_block == NULL)
4727 fallthrough_block = new_immBlock();
4728 if (true_block == NULL)
4729 true_block = fallthrough_block;
4730 if (false_block == NULL)
4731 false_block = fallthrough_block;
4734 set_cur_block(cur_block);
4735 create_condition_evaluation(statement->condition, true_block,
4739 mature_immBlock(true_block);
4740 if (false_block != fallthrough_block && false_block != NULL) {
4741 mature_immBlock(false_block);
4743 if (fallthrough_block != NULL) {
4744 mature_immBlock(fallthrough_block);
4747 set_cur_block(fallthrough_block);
4750 static void while_statement_to_firm(while_statement_t *statement)
4752 ir_node *jmp = NULL;
4753 if (get_cur_block() != NULL) {
4757 /* create the header block */
4758 ir_node *header_block = new_immBlock();
4760 add_immBlock_pred(header_block, jmp);
4764 ir_node *old_continue_label = continue_label;
4765 ir_node *old_break_label = break_label;
4766 continue_label = header_block;
4769 ir_node *body_block = new_immBlock();
4770 set_cur_block(body_block);
4771 statement_to_firm(statement->body);
4772 ir_node *false_block = break_label;
4774 assert(continue_label == header_block);
4775 continue_label = old_continue_label;
4776 break_label = old_break_label;
4778 if (get_cur_block() != NULL) {
4780 add_immBlock_pred(header_block, jmp);
4783 /* shortcut for while(true) */
4784 if (is_constant_expression(statement->condition)
4785 && fold_constant_to_bool(statement->condition) != 0) {
4786 set_cur_block(header_block);
4787 ir_node *header_jmp = new_Jmp();
4788 add_immBlock_pred(body_block, header_jmp);
4790 keep_alive(body_block);
4791 keep_all_memory(body_block);
4792 set_cur_block(body_block);
4794 if (false_block == NULL) {
4795 false_block = new_immBlock();
4798 /* create the condition */
4799 set_cur_block(header_block);
4801 create_condition_evaluation(statement->condition, body_block,
4805 mature_immBlock(body_block);
4806 mature_immBlock(header_block);
4807 if (false_block != NULL) {
4808 mature_immBlock(false_block);
4811 set_cur_block(false_block);
4814 static void do_while_statement_to_firm(do_while_statement_t *statement)
4816 ir_node *jmp = NULL;
4817 if (get_cur_block() != NULL) {
4821 /* create the header block */
4822 ir_node *header_block = new_immBlock();
4825 ir_node *body_block = new_immBlock();
4827 add_immBlock_pred(body_block, jmp);
4830 ir_node *old_continue_label = continue_label;
4831 ir_node *old_break_label = break_label;
4832 continue_label = header_block;
4835 set_cur_block(body_block);
4836 statement_to_firm(statement->body);
4837 ir_node *false_block = break_label;
4839 assert(continue_label == header_block);
4840 continue_label = old_continue_label;
4841 break_label = old_break_label;
4843 if (get_cur_block() != NULL) {
4844 ir_node *body_jmp = new_Jmp();
4845 add_immBlock_pred(header_block, body_jmp);
4846 mature_immBlock(header_block);
4849 if (false_block == NULL) {
4850 false_block = new_immBlock();
4853 /* create the condition */
4854 set_cur_block(header_block);
4856 create_condition_evaluation(statement->condition, body_block, false_block);
4857 mature_immBlock(body_block);
4858 mature_immBlock(header_block);
4859 mature_immBlock(false_block);
4861 set_cur_block(false_block);
4864 static void for_statement_to_firm(for_statement_t *statement)
4866 ir_node *jmp = NULL;
4868 /* create declarations */
4869 entity_t *entity = statement->scope.entities;
4870 for ( ; entity != NULL; entity = entity->base.next) {
4871 if (!is_declaration(entity))
4874 create_local_declaration(entity);
4877 if (get_cur_block() != NULL) {
4878 entity = statement->scope.entities;
4879 for ( ; entity != NULL; entity = entity->base.next) {
4880 if (!is_declaration(entity))
4883 initialize_local_declaration(entity);
4886 if (statement->initialisation != NULL) {
4887 expression_to_firm(statement->initialisation);
4894 /* create the step block */
4895 ir_node *const step_block = new_immBlock();
4896 set_cur_block(step_block);
4897 if (statement->step != NULL) {
4898 expression_to_firm(statement->step);
4900 ir_node *const step_jmp = new_Jmp();
4902 /* create the header block */
4903 ir_node *const header_block = new_immBlock();
4904 set_cur_block(header_block);
4906 add_immBlock_pred(header_block, jmp);
4908 add_immBlock_pred(header_block, step_jmp);
4910 /* the false block */
4911 ir_node *const false_block = new_immBlock();
4914 ir_node *body_block;
4915 if (statement->body != NULL) {
4916 ir_node *const old_continue_label = continue_label;
4917 ir_node *const old_break_label = break_label;
4918 continue_label = step_block;
4919 break_label = false_block;
4921 body_block = new_immBlock();
4922 set_cur_block(body_block);
4923 statement_to_firm(statement->body);
4925 assert(continue_label == step_block);
4926 assert(break_label == false_block);
4927 continue_label = old_continue_label;
4928 break_label = old_break_label;
4930 if (get_cur_block() != NULL) {
4932 add_immBlock_pred(step_block, jmp);
4935 body_block = step_block;
4938 /* create the condition */
4939 set_cur_block(header_block);
4940 if (statement->condition != NULL) {
4941 create_condition_evaluation(statement->condition, body_block,
4944 keep_alive(header_block);
4945 keep_all_memory(header_block);
4947 add_immBlock_pred(body_block, jmp);
4950 mature_immBlock(body_block);
4951 mature_immBlock(false_block);
4952 mature_immBlock(step_block);
4953 mature_immBlock(header_block);
4954 mature_immBlock(false_block);
4956 set_cur_block(false_block);
4959 static void create_jump_statement(const statement_t *statement,
4960 ir_node *target_block)
4962 if (get_cur_block() == NULL)
4965 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4966 ir_node *jump = new_d_Jmp(dbgi);
4967 add_immBlock_pred(target_block, jump);
4969 set_cur_block(NULL);
4972 static ir_node *get_break_label(void)
4974 if (break_label == NULL) {
4975 break_label = new_immBlock();
4980 static void switch_statement_to_firm(switch_statement_t *statement)
4982 ir_node *first_block = NULL;
4983 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4984 ir_node *cond = NULL;
4986 if (get_cur_block() != NULL) {
4987 ir_node *expression = expression_to_firm(statement->expression);
4988 cond = new_d_Cond(dbgi, expression);
4989 first_block = get_cur_block();
4992 set_cur_block(NULL);
4994 ir_node *const old_switch_cond = current_switch_cond;
4995 ir_node *const old_break_label = break_label;
4996 const bool old_saw_default_label = saw_default_label;
4997 saw_default_label = false;
4998 current_switch_cond = cond;
5000 switch_statement_t *const old_switch = current_switch;
5001 current_switch = statement;
5003 /* determine a free number for the default label */
5004 unsigned long num_cases = 0;
5006 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
5007 if (l->expression == NULL) {
5011 if (l->last_case >= l->first_case)
5012 num_cases += l->last_case - l->first_case + 1;
5013 if (l->last_case > def_nr)
5014 def_nr = l->last_case;
5017 if (def_nr == INT_MAX) {
5018 /* Bad: an overflow will occur, we cannot be sure that the
5019 * maximum + 1 is a free number. Scan the values a second
5020 * time to find a free number.
5022 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
5024 memset(bits, 0, (num_cases + 7) >> 3);
5025 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
5026 if (l->expression == NULL) {
5030 unsigned long start = l->first_case > 0 ? (unsigned long)l->first_case : 0;
5031 if (start < num_cases && l->last_case >= 0) {
5032 unsigned long end = (unsigned long)l->last_case < num_cases ?
5033 (unsigned long)l->last_case : num_cases - 1;
5034 for (unsigned long cns = start; cns <= end; ++cns) {
5035 bits[cns >> 3] |= (1 << (cns & 7));
5039 /* We look at the first num_cases constants:
5040 * Either they are dense, so we took the last (num_cases)
5041 * one, or they are not dense, so we will find one free
5045 for (i = 0; i < num_cases; ++i)
5046 if ((bits[i >> 3] & (1 << (i & 7))) == 0)
5054 statement->default_proj_nr = def_nr;
5056 if (statement->body != NULL) {
5057 statement_to_firm(statement->body);
5060 if (get_cur_block() != NULL) {
5061 ir_node *jmp = new_Jmp();
5062 add_immBlock_pred(get_break_label(), jmp);
5065 if (!saw_default_label && first_block != NULL) {
5066 set_cur_block(first_block);
5067 ir_node *const proj = new_d_defaultProj(dbgi, cond,
5068 statement->default_proj_nr);
5069 add_immBlock_pred(get_break_label(), proj);
5072 if (break_label != NULL) {
5073 mature_immBlock(break_label);
5075 set_cur_block(break_label);
5077 assert(current_switch_cond == cond);
5078 current_switch = old_switch;
5079 current_switch_cond = old_switch_cond;
5080 break_label = old_break_label;
5081 saw_default_label = old_saw_default_label;
5084 static void case_label_to_firm(const case_label_statement_t *statement)
5086 if (statement->is_empty_range)
5089 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5091 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
5094 ir_node *block = new_immBlock();
5096 if (current_switch_cond != NULL) {
5097 set_cur_block(get_nodes_block(current_switch_cond));
5098 if (statement->expression != NULL) {
5099 long pn = statement->first_case;
5100 long end_pn = statement->last_case;
5101 assert(pn <= end_pn);
5102 /* create jumps for all cases in the given range */
5104 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
5105 add_immBlock_pred(block, proj);
5106 } while (pn++ < end_pn);
5108 saw_default_label = true;
5109 proj = new_d_defaultProj(dbgi, current_switch_cond,
5110 current_switch->default_proj_nr);
5112 add_immBlock_pred(block, proj);
5116 if (fallthrough != NULL) {
5117 add_immBlock_pred(block, fallthrough);
5119 mature_immBlock(block);
5120 set_cur_block(block);
5122 if (statement->statement != NULL) {
5123 statement_to_firm(statement->statement);
5127 static void label_to_firm(const label_statement_t *statement)
5129 ir_node *block = get_label_block(statement->label);
5131 if (get_cur_block() != NULL) {
5132 ir_node *jmp = new_Jmp();
5133 add_immBlock_pred(block, jmp);
5136 set_cur_block(block);
5138 keep_all_memory(block);
5140 if (statement->statement != NULL) {
5141 statement_to_firm(statement->statement);
5145 static void goto_to_firm(const goto_statement_t *statement)
5147 if (get_cur_block() == NULL)
5150 if (statement->expression) {
5151 ir_node *irn = expression_to_firm(statement->expression);
5152 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5153 ir_node *ijmp = new_d_IJmp(dbgi, irn);
5155 set_irn_link(ijmp, ijmp_list);
5158 ir_node *block = get_label_block(statement->label);
5159 ir_node *jmp = new_Jmp();
5160 add_immBlock_pred(block, jmp);
5162 set_cur_block(NULL);
5165 static void asm_statement_to_firm(const asm_statement_t *statement)
5167 bool needs_memory = false;
5169 if (statement->is_volatile) {
5170 needs_memory = true;
5173 size_t n_clobbers = 0;
5174 asm_clobber_t *clobber = statement->clobbers;
5175 for ( ; clobber != NULL; clobber = clobber->next) {
5176 const char *clobber_str = clobber->clobber.begin;
5178 if (!be_is_valid_clobber(clobber_str)) {
5179 errorf(&statement->base.source_position,
5180 "invalid clobber '%s' specified", clobber->clobber);
5184 if (strcmp(clobber_str, "memory") == 0) {
5185 needs_memory = true;
5189 ident *id = new_id_from_str(clobber_str);
5190 obstack_ptr_grow(&asm_obst, id);
5193 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
5194 ident **clobbers = NULL;
5195 if (n_clobbers > 0) {
5196 clobbers = obstack_finish(&asm_obst);
5199 size_t n_inputs = 0;
5200 asm_argument_t *argument = statement->inputs;
5201 for ( ; argument != NULL; argument = argument->next)
5203 size_t n_outputs = 0;
5204 argument = statement->outputs;
5205 for ( ; argument != NULL; argument = argument->next)
5208 unsigned next_pos = 0;
5210 ir_node *ins[n_inputs + n_outputs + 1];
5213 ir_asm_constraint tmp_in_constraints[n_outputs];
5215 const expression_t *out_exprs[n_outputs];
5216 ir_node *out_addrs[n_outputs];
5217 size_t out_size = 0;
5219 argument = statement->outputs;
5220 for ( ; argument != NULL; argument = argument->next) {
5221 const char *constraints = argument->constraints.begin;
5222 asm_constraint_flags_t asm_flags
5223 = be_parse_asm_constraints(constraints);
5225 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5226 warningf(&statement->base.source_position,
5227 "some constraints in '%s' are not supported", constraints);
5229 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5230 errorf(&statement->base.source_position,
5231 "some constraints in '%s' are invalid", constraints);
5234 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
5235 errorf(&statement->base.source_position,
5236 "no write flag specified for output constraints '%s'",
5241 unsigned pos = next_pos++;
5242 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5243 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5244 expression_t *expr = argument->expression;
5245 ir_node *addr = expression_to_addr(expr);
5246 /* in+output, construct an artifical same_as constraint on the
5248 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
5250 ir_node *value = get_value_from_lvalue(expr, addr);
5252 snprintf(buf, sizeof(buf), "%u", (unsigned) out_size);
5254 ir_asm_constraint constraint;
5255 constraint.pos = pos;
5256 constraint.constraint = new_id_from_str(buf);
5257 constraint.mode = get_ir_mode_storage(expr->base.type);
5258 tmp_in_constraints[in_size] = constraint;
5259 ins[in_size] = value;
5264 out_exprs[out_size] = expr;
5265 out_addrs[out_size] = addr;
5267 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5268 /* pure memory ops need no input (but we have to make sure we
5269 * attach to the memory) */
5270 assert(! (asm_flags &
5271 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5272 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5273 needs_memory = true;
5275 /* we need to attach the address to the inputs */
5276 expression_t *expr = argument->expression;
5278 ir_asm_constraint constraint;
5279 constraint.pos = pos;
5280 constraint.constraint = new_id_from_str(constraints);
5281 constraint.mode = NULL;
5282 tmp_in_constraints[in_size] = constraint;
5284 ins[in_size] = expression_to_addr(expr);
5288 errorf(&statement->base.source_position,
5289 "only modifiers but no place set in constraints '%s'",
5294 ir_asm_constraint constraint;
5295 constraint.pos = pos;
5296 constraint.constraint = new_id_from_str(constraints);
5297 constraint.mode = get_ir_mode_storage(argument->expression->base.type);
5299 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5301 assert(obstack_object_size(&asm_obst)
5302 == out_size * sizeof(ir_asm_constraint));
5303 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
5306 obstack_grow(&asm_obst, tmp_in_constraints,
5307 in_size * sizeof(tmp_in_constraints[0]));
5308 /* find and count input and output arguments */
5309 argument = statement->inputs;
5310 for ( ; argument != NULL; argument = argument->next) {
5311 const char *constraints = argument->constraints.begin;
5312 asm_constraint_flags_t asm_flags
5313 = be_parse_asm_constraints(constraints);
5315 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5316 errorf(&statement->base.source_position,
5317 "some constraints in '%s' are not supported", constraints);
5320 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5321 errorf(&statement->base.source_position,
5322 "some constraints in '%s' are invalid", constraints);
5325 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
5326 errorf(&statement->base.source_position,
5327 "write flag specified for input constraints '%s'",
5333 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5334 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5335 /* we can treat this as "normal" input */
5336 input = expression_to_firm(argument->expression);
5337 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5338 /* pure memory ops need no input (but we have to make sure we
5339 * attach to the memory) */
5340 assert(! (asm_flags &
5341 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5342 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5343 needs_memory = true;
5344 input = expression_to_addr(argument->expression);
5346 errorf(&statement->base.source_position,
5347 "only modifiers but no place set in constraints '%s'",
5352 ir_asm_constraint constraint;
5353 constraint.pos = next_pos++;
5354 constraint.constraint = new_id_from_str(constraints);
5355 constraint.mode = get_irn_mode(input);
5357 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5358 ins[in_size++] = input;
5362 ir_asm_constraint constraint;
5363 constraint.pos = next_pos++;
5364 constraint.constraint = new_id_from_str("");
5365 constraint.mode = mode_M;
5367 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5368 ins[in_size++] = get_store();
5371 assert(obstack_object_size(&asm_obst)
5372 == in_size * sizeof(ir_asm_constraint));
5373 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
5375 /* create asm node */
5376 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5378 ident *asm_text = new_id_from_str(statement->asm_text.begin);
5380 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
5381 out_size, output_constraints,
5382 n_clobbers, clobbers, asm_text);
5384 if (statement->is_volatile) {
5385 set_irn_pinned(node, op_pin_state_pinned);
5387 set_irn_pinned(node, op_pin_state_floats);
5390 /* create output projs & connect them */
5392 ir_node *projm = new_Proj(node, mode_M, out_size+1);
5397 for (i = 0; i < out_size; ++i) {
5398 const expression_t *out_expr = out_exprs[i];
5400 ir_mode *mode = get_ir_mode_storage(out_expr->base.type);
5401 ir_node *proj = new_Proj(node, mode, pn);
5402 ir_node *addr = out_addrs[i];
5404 set_value_for_expression_addr(out_expr, proj, addr);
5408 static void ms_try_statement_to_firm(ms_try_statement_t *statement)
5410 statement_to_firm(statement->try_statement);
5411 warningf(&statement->base.source_position, "structured exception handling ignored");
5414 static void leave_statement_to_firm(leave_statement_t *statement)
5416 errorf(&statement->base.source_position, "__leave not supported yet");
5420 * Transform a statement.
5422 static void statement_to_firm(statement_t *statement)
5425 assert(!statement->base.transformed);
5426 statement->base.transformed = true;
5429 switch (statement->kind) {
5430 case STATEMENT_INVALID:
5431 panic("invalid statement found");
5432 case STATEMENT_EMPTY:
5435 case STATEMENT_COMPOUND:
5436 compound_statement_to_firm(&statement->compound);
5438 case STATEMENT_RETURN:
5439 return_statement_to_firm(&statement->returns);
5441 case STATEMENT_EXPRESSION:
5442 expression_statement_to_firm(&statement->expression);
5445 if_statement_to_firm(&statement->ifs);
5447 case STATEMENT_WHILE:
5448 while_statement_to_firm(&statement->whiles);
5450 case STATEMENT_DO_WHILE:
5451 do_while_statement_to_firm(&statement->do_while);
5453 case STATEMENT_DECLARATION:
5454 declaration_statement_to_firm(&statement->declaration);
5456 case STATEMENT_BREAK:
5457 create_jump_statement(statement, get_break_label());
5459 case STATEMENT_CONTINUE:
5460 create_jump_statement(statement, continue_label);
5462 case STATEMENT_SWITCH:
5463 switch_statement_to_firm(&statement->switchs);
5465 case STATEMENT_CASE_LABEL:
5466 case_label_to_firm(&statement->case_label);
5469 for_statement_to_firm(&statement->fors);
5471 case STATEMENT_LABEL:
5472 label_to_firm(&statement->label);
5474 case STATEMENT_GOTO:
5475 goto_to_firm(&statement->gotos);
5478 asm_statement_to_firm(&statement->asms);
5480 case STATEMENT_MS_TRY:
5481 ms_try_statement_to_firm(&statement->ms_try);
5483 case STATEMENT_LEAVE:
5484 leave_statement_to_firm(&statement->leave);
5487 panic("statement not implemented");
5490 static int count_local_variables(const entity_t *entity,
5491 const entity_t *const last)
5494 entity_t const *const end = last != NULL ? last->base.next : NULL;
5495 for (; entity != end; entity = entity->base.next) {
5499 if (entity->kind == ENTITY_VARIABLE) {
5500 type = skip_typeref(entity->declaration.type);
5501 address_taken = entity->variable.address_taken;
5502 } else if (entity->kind == ENTITY_PARAMETER) {
5503 type = skip_typeref(entity->declaration.type);
5504 address_taken = entity->parameter.address_taken;
5509 if (!address_taken && is_type_scalar(type))
5515 static void count_local_variables_in_stmt(statement_t *stmt, void *const env)
5517 int *const count = env;
5519 switch (stmt->kind) {
5520 case STATEMENT_DECLARATION: {
5521 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5522 *count += count_local_variables(decl_stmt->declarations_begin,
5523 decl_stmt->declarations_end);
5528 *count += count_local_variables(stmt->fors.scope.entities, NULL);
5537 * Return the number of local (alias free) variables used by a function.
5539 static int get_function_n_local_vars(entity_t *entity)
5541 const function_t *function = &entity->function;
5544 /* count parameters */
5545 count += count_local_variables(function->parameters.entities, NULL);
5547 /* count local variables declared in body */
5548 walk_statements(function->statement, count_local_variables_in_stmt, &count);
5553 * Build Firm code for the parameters of a function.
5555 static void initialize_function_parameters(entity_t *entity)
5557 assert(entity->kind == ENTITY_FUNCTION);
5558 ir_graph *irg = current_ir_graph;
5559 ir_node *args = get_irg_args(irg);
5560 ir_node *start_block = get_irg_start_block(irg);
5561 ir_type *function_irtype = get_ir_type(entity->declaration.type);
5562 int first_param_nr = 0;
5564 if (entity->function.need_closure) {
5565 /* add an extra parameter for the static link */
5566 entity->function.static_link = new_r_Proj(start_block, args, mode_P_data, 0);
5571 entity_t *parameter = entity->function.parameters.entities;
5572 for ( ; parameter != NULL; parameter = parameter->base.next, ++n) {
5573 if (parameter->kind != ENTITY_PARAMETER)
5576 assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN);
5577 type_t *type = skip_typeref(parameter->declaration.type);
5579 bool needs_entity = parameter->parameter.address_taken;
5580 assert(!is_type_array(type));
5581 if (is_type_compound(type)) {
5582 needs_entity = true;
5586 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5587 ident *id = new_id_from_str(parameter->base.symbol->string);
5588 set_entity_ident(entity, id);
5590 parameter->declaration.kind
5591 = DECLARATION_KIND_PARAMETER_ENTITY;
5592 parameter->parameter.v.entity = entity;
5596 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5597 ir_mode *param_mode = get_type_mode(param_irtype);
5599 long pn = n + first_param_nr;
5600 ir_node *value = new_r_Proj(start_block, args, param_mode, pn);
5602 ir_mode *mode = get_ir_mode_storage(type);
5603 value = create_conv(NULL, value, mode);
5604 value = do_strict_conv(NULL, value);
5606 parameter->declaration.kind = DECLARATION_KIND_PARAMETER;
5607 parameter->parameter.v.value_number = next_value_number_function;
5608 set_irg_loc_description(current_ir_graph, next_value_number_function,
5610 ++next_value_number_function;
5612 set_value(parameter->parameter.v.value_number, value);
5617 * Handle additional decl modifiers for IR-graphs
5619 * @param irg the IR-graph
5620 * @param dec_modifiers additional modifiers
5622 static void handle_decl_modifier_irg(ir_graph_ptr irg,
5623 decl_modifiers_t decl_modifiers)
5625 if (decl_modifiers & DM_RETURNS_TWICE) {
5626 /* TRUE if the declaration includes __attribute__((returns_twice)) */
5627 set_irg_additional_property(irg, mtp_property_returns_twice);
5629 if (decl_modifiers & DM_NORETURN) {
5630 /* TRUE if the declaration includes the Microsoft
5631 __declspec(noreturn) specifier. */
5632 set_irg_additional_property(irg, mtp_property_noreturn);
5634 if (decl_modifiers & DM_NOTHROW) {
5635 /* TRUE if the declaration includes the Microsoft
5636 __declspec(nothrow) specifier. */
5637 set_irg_additional_property(irg, mtp_property_nothrow);
5639 if (decl_modifiers & DM_NAKED) {
5640 /* TRUE if the declaration includes the Microsoft
5641 __declspec(naked) specifier. */
5642 set_irg_additional_property(irg, mtp_property_naked);
5644 if (decl_modifiers & DM_FORCEINLINE) {
5645 /* TRUE if the declaration includes the
5646 Microsoft __forceinline specifier. */
5647 set_irg_inline_property(irg, irg_inline_forced);
5649 if (decl_modifiers & DM_NOINLINE) {
5650 /* TRUE if the declaration includes the Microsoft
5651 __declspec(noinline) specifier. */
5652 set_irg_inline_property(irg, irg_inline_forbidden);
5656 static void add_function_pointer(ir_type *segment, ir_entity *method,
5657 const char *unique_template)
5659 ir_type *method_type = get_entity_type(method);
5660 ir_type *ptr_type = new_type_pointer(method_type);
5662 ident *ide = id_unique(unique_template);
5663 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5664 ir_graph *irg = get_const_code_irg();
5665 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5668 set_entity_compiler_generated(ptr, 1);
5669 set_entity_variability(ptr, variability_constant);
5670 set_atomic_ent_value(ptr, val);
5674 * Generate possible IJmp branches to a given label block.
5676 static void gen_ijmp_branches(ir_node *block)
5679 for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) {
5680 add_immBlock_pred(block, ijmp);
5685 * Create code for a function and all inner functions.
5687 * @param entity the function entity
5689 static void create_function(entity_t *entity)
5691 assert(entity->kind == ENTITY_FUNCTION);
5692 ir_entity *function_entity = get_function_entity(entity, current_outer_frame);
5694 if (entity->function.statement == NULL)
5697 if (is_main(entity) && firm_opt.os_support == OS_SUPPORT_MINGW) {
5698 prepare_main_collect2(entity);
5701 inner_functions = NULL;
5702 current_trampolines = NULL;
5704 if (entity->declaration.modifiers & DM_CONSTRUCTOR) {
5705 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5706 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5708 if (entity->declaration.modifiers & DM_DESTRUCTOR) {
5709 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5710 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5713 current_function_entity = entity;
5714 current_function_name = NULL;
5715 current_funcsig = NULL;
5717 assert(all_labels == NULL);
5718 all_labels = NEW_ARR_F(label_t *, 0);
5721 int n_local_vars = get_function_n_local_vars(entity);
5722 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5724 ir_graph *old_current_function = current_function;
5725 current_function = irg;
5727 set_irg_fp_model(irg, firm_opt.fp_model);
5728 tarval_enable_fp_ops(1);
5729 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5731 ir_node *first_block = get_cur_block();
5733 /* set inline flags */
5734 if (entity->function.is_inline)
5735 set_irg_inline_property(irg, irg_inline_recomended);
5736 handle_decl_modifier_irg(irg, entity->declaration.modifiers);
5738 next_value_number_function = 0;
5739 initialize_function_parameters(entity);
5740 current_static_link = entity->function.static_link;
5742 statement_to_firm(entity->function.statement);
5744 ir_node *end_block = get_irg_end_block(irg);
5746 /* do we have a return statement yet? */
5747 if (get_cur_block() != NULL) {
5748 type_t *type = skip_typeref(entity->declaration.type);
5749 assert(is_type_function(type));
5750 const function_type_t *func_type = &type->function;
5751 const type_t *return_type
5752 = skip_typeref(func_type->return_type);
5755 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5756 ret = new_Return(get_store(), 0, NULL);
5759 if (is_type_scalar(return_type)) {
5760 mode = get_ir_mode_storage(func_type->return_type);
5766 /* §5.1.2.2.3 main implicitly returns 0 */
5767 if (is_main(entity)) {
5768 in[0] = new_Const(get_mode_null(mode));
5770 in[0] = new_Unknown(mode);
5772 ret = new_Return(get_store(), 1, in);
5774 add_immBlock_pred(end_block, ret);
5777 bool has_computed_gotos = false;
5778 for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
5779 label_t *label = all_labels[i];
5780 if (label->address_taken) {
5781 gen_ijmp_branches(label->block);
5782 has_computed_gotos = true;
5784 mature_immBlock(label->block);
5786 if (has_computed_gotos) {
5787 /* if we have computed goto's in the function, we cannot inline it */
5788 if (get_irg_inline_property(irg) >= irg_inline_recomended) {
5789 warningf(&entity->base.source_position,
5790 "function '%Y' can never be inlined because it contains a computed goto",
5791 entity->base.symbol);
5793 set_irg_inline_property(irg, irg_inline_forbidden);
5796 DEL_ARR_F(all_labels);
5799 mature_immBlock(first_block);
5800 mature_immBlock(end_block);
5802 irg_finalize_cons(irg);
5804 /* finalize the frame type */
5805 ir_type *frame_type = get_irg_frame_type(irg);
5806 int n = get_compound_n_members(frame_type);
5809 for (int i = 0; i < n; ++i) {
5810 ir_entity *entity = get_compound_member(frame_type, i);
5811 ir_type *entity_type = get_entity_type(entity);
5813 int align = get_type_alignment_bytes(entity_type);
5814 if (align > align_all)
5818 misalign = offset % align;
5820 offset += align - misalign;
5824 set_entity_offset(entity, offset);
5825 offset += get_type_size_bytes(entity_type);
5827 set_type_size_bytes(frame_type, offset);
5828 set_type_alignment_bytes(frame_type, align_all);
5831 current_function = old_current_function;
5833 if (current_trampolines != NULL) {
5834 DEL_ARR_F(current_trampolines);
5835 current_trampolines = NULL;
5838 /* create inner functions if any */
5839 entity_t **inner = inner_functions;
5840 if (inner != NULL) {
5841 ir_type *rem_outer_frame = current_outer_frame;
5842 current_outer_frame = get_irg_frame_type(current_ir_graph);
5843 ir_type *rem_outer_value_type = current_outer_value_type;
5844 current_outer_value_type = get_irg_value_param_type(current_ir_graph);
5845 for (int i = ARR_LEN(inner) - 1; i >= 0; --i) {
5846 create_function(inner[i]);
5850 current_outer_value_type = rem_outer_value_type;
5851 current_outer_frame = rem_outer_frame;
5855 static void scope_to_firm(scope_t *scope)
5857 /* first pass: create declarations */
5858 entity_t *entity = scope->entities;
5859 for ( ; entity != NULL; entity = entity->base.next) {
5860 if (entity->base.symbol == NULL)
5863 if (entity->kind == ENTITY_FUNCTION) {
5864 if (entity->function.btk != bk_none) {
5865 /* builtins have no representation */
5868 (void)get_function_entity(entity, NULL);
5869 } else if (entity->kind == ENTITY_VARIABLE) {
5870 create_global_variable(entity);
5871 } else if (entity->kind == ENTITY_NAMESPACE) {
5872 scope_to_firm(&entity->namespacee.members);
5876 /* second pass: create code/initializers */
5877 entity = scope->entities;
5878 for ( ; entity != NULL; entity = entity->base.next) {
5879 if (entity->base.symbol == NULL)
5882 if (entity->kind == ENTITY_FUNCTION) {
5883 if (entity->function.btk != bk_none) {
5884 /* builtins have no representation */
5887 create_function(entity);
5888 } else if (entity->kind == ENTITY_VARIABLE) {
5889 assert(entity->declaration.kind
5890 == DECLARATION_KIND_GLOBAL_VARIABLE);
5891 current_ir_graph = get_const_code_irg();
5892 create_variable_initializer(entity);
5897 void init_ast2firm(void)
5899 obstack_init(&asm_obst);
5900 init_atomic_modes();
5902 ir_set_debug_retrieve(dbg_retrieve);
5903 ir_set_type_debug_retrieve(dbg_print_type_dbg_info);
5905 /* OS option must be set to the backend */
5906 switch (firm_opt.os_support) {
5907 case OS_SUPPORT_MINGW:
5908 create_ld_ident = create_name_win32;
5910 case OS_SUPPORT_LINUX:
5911 create_ld_ident = create_name_linux_elf;
5913 case OS_SUPPORT_MACHO:
5914 create_ld_ident = create_name_macho;
5917 panic("unexpected OS support mode");
5920 /* create idents for all known runtime functions */
5921 for (size_t i = 0; i < lengthof(rts_data); ++i) {
5922 rts_idents[i] = new_id_from_str(rts_data[i].name);
5925 entitymap_init(&entitymap);
5928 static void init_ir_types(void)
5930 static int ir_types_initialized = 0;
5931 if (ir_types_initialized)
5933 ir_types_initialized = 1;
5935 ir_type_int = get_ir_type(type_int);
5936 ir_type_char = get_ir_type(type_char);
5937 ir_type_const_char = get_ir_type(type_const_char);
5938 ir_type_wchar_t = get_ir_type(type_wchar_t);
5939 ir_type_void = get_ir_type(type_void);
5941 be_params = be_get_backend_param();
5942 mode_float_arithmetic = be_params->mode_float_arithmetic;
5944 stack_param_align = be_params->stack_param_align;
5947 void exit_ast2firm(void)
5949 entitymap_destroy(&entitymap);
5950 obstack_free(&asm_obst, NULL);
5953 static void global_asm_to_firm(statement_t *s)
5955 for (; s != NULL; s = s->base.next) {
5956 assert(s->kind == STATEMENT_ASM);
5958 char const *const text = s->asms.asm_text.begin;
5959 size_t size = s->asms.asm_text.size;
5961 /* skip the last \0 */
5962 if (text[size - 1] == '\0')
5965 ident *const id = new_id_from_chars(text, size);
5970 void translation_unit_to_firm(translation_unit_t *unit)
5972 /* just to be sure */
5973 continue_label = NULL;
5975 current_switch_cond = NULL;
5976 current_translation_unit = unit;
5980 scope_to_firm(&unit->scope);
5981 global_asm_to_firm(unit->global_asm);
5983 current_ir_graph = NULL;
5984 current_translation_unit = NULL;