2 * This file is part of cparser.
3 * Copyright (C) 2007-2009 Matthias Braun <matze@braunis.de>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
27 #include <libfirm/firm.h>
28 #include <libfirm/adt/obst.h>
29 #include <libfirm/be.h>
33 #include "adt/error.h"
34 #include "adt/array.h"
42 #include "diagnostic.h"
43 #include "lang_features.h"
45 #include "type_hash.h"
47 #include "walk_statements.h"
50 #include "entitymap_t.h"
51 #include "driver/firm_opt.h"
52 #include "driver/firm_cmdline.h"
54 typedef struct trampoline_region trampoline_region;
55 struct trampoline_region {
56 ir_entity *function; /**< The function that is called by this trampoline */
57 ir_entity *region; /**< created region for the trampoline */
60 static const backend_params *be_params;
62 static ir_type *ir_type_char;
63 static ir_type *ir_type_const_char;
64 static ir_type *ir_type_wchar_t;
65 static ir_type *ir_type_void;
66 static ir_type *ir_type_int;
68 /* architecture specific floating point arithmetic mode (if any) */
69 static ir_mode *mode_float_arithmetic;
71 /* alignment of stack parameters */
72 static unsigned stack_param_align;
74 static int next_value_number_function;
75 static ir_node *continue_label;
76 static ir_node *break_label;
77 static ir_node *current_switch_cond;
78 static bool saw_default_label;
79 static label_t **all_labels;
80 static entity_t **inner_functions;
81 static ir_node *ijmp_list;
82 static bool constant_folding;
83 static bool initializer_use_bitfield_basetype;
85 extern bool have_const_functions;
87 static const entity_t *current_function_entity;
88 static ir_node *current_function_name;
89 static ir_node *current_funcsig;
90 static switch_statement_t *current_switch;
91 static ir_graph *current_function;
92 static translation_unit_t *current_translation_unit;
93 static trampoline_region *current_trampolines;
94 static ir_type *current_outer_frame;
95 static ir_type *current_outer_value_type;
96 static ir_node *current_static_link;
98 static entitymap_t entitymap;
100 static struct obstack asm_obst;
102 typedef enum declaration_kind_t {
103 DECLARATION_KIND_UNKNOWN,
104 DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
105 DECLARATION_KIND_GLOBAL_VARIABLE,
106 DECLARATION_KIND_LOCAL_VARIABLE,
107 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
108 DECLARATION_KIND_PARAMETER,
109 DECLARATION_KIND_PARAMETER_ENTITY,
110 DECLARATION_KIND_FUNCTION,
111 DECLARATION_KIND_COMPOUND_MEMBER,
112 DECLARATION_KIND_INNER_FUNCTION
113 } declaration_kind_t;
115 static ir_mode *get_ir_mode_storage(type_t *type);
117 * get arithmetic mode for a type. This is different from get_ir_mode_storage,
118 * int that it returns bigger modes for floating point on some platforms
119 * (x87 internally does arithemtic with 80bits)
121 static ir_mode *get_ir_mode_arithmetic(type_t *type);
123 static ir_type *get_ir_type_incomplete(type_t *type);
125 static void enqueue_inner_function(entity_t *entity)
127 if (inner_functions == NULL)
128 inner_functions = NEW_ARR_F(entity_t *, 0);
129 ARR_APP1(entity_t*, inner_functions, entity);
132 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
134 const entity_t *entity = get_irg_loc_description(irg, pos);
136 if (entity != NULL) {
137 warningf(&entity->base.source_position,
138 "%s '%#T' might be used uninitialized",
139 get_entity_kind_name(entity->kind),
140 entity->declaration.type, entity->base.symbol);
142 return new_r_Unknown(irg, mode);
145 static const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
147 const source_position_t *pos = (const source_position_t*) dbg;
152 return pos->input_name;
155 static dbg_info *get_dbg_info(const source_position_t *pos)
157 return (dbg_info*) pos;
160 static void dbg_print_type_dbg_info(char *buffer, size_t buffer_size,
161 const type_dbg_info *dbg)
164 print_to_buffer(buffer, buffer_size);
165 const type_t *type = (const type_t*) dbg;
167 finish_print_to_buffer();
170 static type_dbg_info *get_type_dbg_info_(const type_t *type)
172 return (type_dbg_info*) type;
175 static ir_mode *atomic_modes[ATOMIC_TYPE_LAST+1];
177 static ir_mode *mode_int, *mode_uint;
179 static ir_node *_expression_to_firm(const expression_t *expression);
180 static ir_node *expression_to_firm(const expression_t *expression);
181 static void create_local_declaration(entity_t *entity);
183 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
185 unsigned flags = get_atomic_type_flags(kind);
186 unsigned size = get_atomic_type_size(kind);
187 if ( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
188 && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
191 unsigned bit_size = size * 8;
192 bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
193 unsigned modulo_shift;
194 ir_mode_arithmetic arithmetic;
196 if (flags & ATOMIC_TYPE_FLAG_INTEGER) {
197 assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
198 snprintf(name, sizeof(name), "%s%u", is_signed ? "I" : "U",
200 sort = irms_int_number;
201 arithmetic = irma_twos_complement;
202 modulo_shift = bit_size < machine_size ? machine_size : bit_size;
204 assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
205 snprintf(name, sizeof(name), "F%u", bit_size);
206 sort = irms_float_number;
207 arithmetic = irma_ieee754;
210 return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
218 * Initialises the atomic modes depending on the machine size.
220 static void init_atomic_modes(void)
222 for (int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
223 atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
225 mode_int = atomic_modes[ATOMIC_TYPE_INT];
226 mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
228 /* there's no real void type in firm */
229 atomic_modes[ATOMIC_TYPE_VOID] = atomic_modes[ATOMIC_TYPE_CHAR];
231 /* initialize pointer modes */
233 ir_mode_sort sort = irms_reference;
234 unsigned bit_size = machine_size;
236 ir_mode_arithmetic arithmetic = irma_twos_complement;
237 unsigned modulo_shift
238 = bit_size < machine_size ? machine_size : bit_size;
240 snprintf(name, sizeof(name), "p%u", machine_size);
241 ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
244 set_reference_mode_signed_eq(ptr_mode, atomic_modes[get_intptr_kind()]);
245 set_reference_mode_unsigned_eq(ptr_mode, atomic_modes[get_uintptr_kind()]);
247 /* Hmm, pointers should be machine size */
248 set_modeP_data(ptr_mode);
249 set_modeP_code(ptr_mode);
252 ir_mode *get_atomic_mode(atomic_type_kind_t kind)
254 assert(kind <= ATOMIC_TYPE_LAST);
255 return atomic_modes[kind];
258 static ir_node *get_vla_size(array_type_t *const type)
260 ir_node *size_node = type->size_node;
261 if (size_node == NULL) {
262 size_node = expression_to_firm(type->size_expression);
263 type->size_node = size_node;
269 * Return a node representing the size of a type.
271 static ir_node *get_type_size_node(type_t *type)
273 type = skip_typeref(type);
275 if (is_type_array(type) && type->array.is_vla) {
276 ir_node *size_node = get_vla_size(&type->array);
277 ir_node *elem_size = get_type_size_node(type->array.element_type);
278 ir_mode *mode = get_irn_mode(size_node);
279 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
283 ir_mode *mode = get_ir_mode_storage(type_size_t);
285 sym.type_p = get_ir_type(type);
286 return new_SymConst(mode, sym, symconst_type_size);
289 static unsigned count_parameters(const function_type_t *function_type)
293 function_parameter_t *parameter = function_type->parameters;
294 for ( ; parameter != NULL; parameter = parameter->next) {
302 * Creates a Firm type for an atomic type
304 static ir_type *create_atomic_type(atomic_type_kind_t akind, const type_t *type)
306 ir_mode *mode = atomic_modes[akind];
307 type_dbg_info *dbgi = get_type_dbg_info_(type);
308 ir_type *irtype = new_d_type_primitive(mode, dbgi);
309 il_alignment_t alignment = get_atomic_type_alignment(akind);
311 set_type_alignment_bytes(irtype, alignment);
317 * Creates a Firm type for a complex type
319 static ir_type *create_complex_type(const complex_type_t *type)
321 atomic_type_kind_t kind = type->akind;
322 ir_mode *mode = atomic_modes[kind];
323 ident *id = get_mode_ident(mode);
327 /* FIXME: finish the array */
332 * Creates a Firm type for an imaginary type
334 static ir_type *create_imaginary_type(imaginary_type_t *type)
336 return create_atomic_type(type->akind, (const type_t*) type);
340 * return type of a parameter (and take transparent union gnu extension into
343 static type_t *get_parameter_type(type_t *orig_type)
345 type_t *type = skip_typeref(orig_type);
346 if (is_type_union(type)
347 && get_type_modifiers(orig_type) & DM_TRANSPARENT_UNION) {
348 compound_t *compound = type->compound.compound;
349 type = compound->members.entities->declaration.type;
355 static ir_type *create_method_type(const function_type_t *function_type, bool for_closure)
357 type_t *return_type = skip_typeref(function_type->return_type);
359 int n_parameters = count_parameters(function_type)
360 + (for_closure ? 1 : 0);
361 int n_results = return_type == type_void ? 0 : 1;
362 type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) function_type);
363 ir_type *irtype = new_d_type_method(n_parameters, n_results, dbgi);
365 if (return_type != type_void) {
366 ir_type *restype = get_ir_type(return_type);
367 set_method_res_type(irtype, 0, restype);
370 function_parameter_t *parameter = function_type->parameters;
373 ir_type *p_irtype = get_ir_type(type_void_ptr);
374 set_method_param_type(irtype, n, p_irtype);
377 for ( ; parameter != NULL; parameter = parameter->next) {
378 type_t *type = get_parameter_type(parameter->type);
379 ir_type *p_irtype = get_ir_type(type);
380 set_method_param_type(irtype, n, p_irtype);
384 bool is_variadic = function_type->variadic;
387 set_method_variadicity(irtype, variadicity_variadic);
389 unsigned cc = get_method_calling_convention(irtype);
390 switch (function_type->calling_convention) {
391 case CC_DEFAULT: /* unspecified calling convention, equal to one of the other, typically cdecl */
394 set_method_calling_convention(irtype, SET_CDECL(cc));
401 /* only non-variadic function can use stdcall, else use cdecl */
402 set_method_calling_convention(irtype, SET_STDCALL(cc));
408 /* only non-variadic function can use fastcall, else use cdecl */
409 set_method_calling_convention(irtype, SET_FASTCALL(cc));
413 /* Hmm, leave default, not accepted by the parser yet. */
418 set_method_calling_convention(irtype, get_method_calling_convention(irtype) | cc_this_call);
423 static ir_type *create_pointer_type(pointer_type_t *type)
425 type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) type);
426 type_t *points_to = type->points_to;
427 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
428 ir_type *ir_type = new_d_type_pointer(ir_points_to, dbgi);
433 static ir_type *create_reference_type(reference_type_t *type)
435 type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) type);
436 type_t *refers_to = type->refers_to;
437 ir_type *ir_refers_to = get_ir_type_incomplete(refers_to);
438 ir_type *ir_type = new_d_type_pointer(ir_refers_to, dbgi);
443 static ir_type *create_array_type(array_type_t *type)
445 type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) type);
446 type_t *element_type = type->element_type;
447 ir_type *ir_element_type = get_ir_type(element_type);
448 ir_type *ir_type = new_d_type_array(1, ir_element_type, dbgi);
450 const int align = get_type_alignment_bytes(ir_element_type);
451 set_type_alignment_bytes(ir_type, align);
453 if (type->size_constant) {
454 int n_elements = type->size;
456 set_array_bounds_int(ir_type, 0, 0, n_elements);
458 size_t elemsize = get_type_size_bytes(ir_element_type);
459 if (elemsize % align > 0) {
460 elemsize += align - (elemsize % align);
462 set_type_size_bytes(ir_type, n_elements * elemsize);
464 set_array_lower_bound_int(ir_type, 0, 0);
466 set_type_state(ir_type, layout_fixed);
472 * Return the signed integer type of size bits.
474 * @param size the size
476 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
480 static ir_mode *s_modes[64 + 1] = {NULL, };
484 if (size <= 0 || size > 64)
487 mode = s_modes[size];
491 snprintf(name, sizeof(name), "bf_I%u", size);
492 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
493 size <= 32 ? 32 : size );
494 s_modes[size] = mode;
497 type_dbg_info *dbgi = get_type_dbg_info_(type);
498 res = new_d_type_primitive(mode, dbgi);
499 set_primitive_base_type(res, base_tp);
505 * Return the unsigned integer type of size bits.
507 * @param size the size
509 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
513 static ir_mode *u_modes[64 + 1] = {NULL, };
517 if (size <= 0 || size > 64)
520 mode = u_modes[size];
524 snprintf(name, sizeof(name), "bf_U%u", size);
525 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
526 size <= 32 ? 32 : size );
527 u_modes[size] = mode;
530 type_dbg_info *dbgi = get_type_dbg_info_(type);
531 res = new_d_type_primitive(mode, dbgi);
532 set_primitive_base_type(res, base_tp);
537 static ir_type *create_bitfield_type(bitfield_type_t *const type)
539 type_t *base = skip_typeref(type->base_type);
540 assert(base->kind == TYPE_ATOMIC || base->kind == TYPE_ENUM);
541 ir_type *irbase = get_ir_type(base);
543 unsigned size = type->bit_size;
545 assert(!is_type_float(base));
546 if (is_type_signed(base)) {
547 return get_signed_int_type_for_bit_size(irbase, size,
548 (const type_t*) type);
550 return get_unsigned_int_type_for_bit_size(irbase, size,
551 (const type_t*) type);
555 #define INVALID_TYPE ((ir_type_ptr)-1)
558 COMPOUND_IS_STRUCT = false,
559 COMPOUND_IS_UNION = true
563 * Construct firm type from ast struct type.
565 static ir_type *create_compound_type(compound_type_t *type,
566 bool incomplete, bool is_union)
568 compound_t *compound = type->compound;
570 if (compound->irtype != NULL && (compound->irtype_complete || incomplete)) {
571 return compound->irtype;
574 symbol_t *symbol = compound->base.symbol;
576 if (symbol != NULL) {
577 id = new_id_from_str(symbol->string);
580 id = id_unique("__anonymous_union.%u");
582 id = id_unique("__anonymous_struct.%u");
588 irtype = new_type_union(id);
590 irtype = new_type_struct(id);
593 compound->irtype_complete = false;
594 compound->irtype = irtype;
600 layout_union_type(type);
602 layout_struct_type(type);
605 compound->irtype_complete = true;
607 entity_t *entry = compound->members.entities;
608 for ( ; entry != NULL; entry = entry->base.next) {
609 if (entry->kind != ENTITY_COMPOUND_MEMBER)
612 symbol_t *symbol = entry->base.symbol;
613 type_t *entry_type = entry->declaration.type;
615 if (symbol == NULL) {
616 /* anonymous bitfield member, skip */
617 if (entry_type->kind == TYPE_BITFIELD)
619 assert(entry_type->kind == TYPE_COMPOUND_STRUCT
620 || entry_type->kind == TYPE_COMPOUND_UNION);
621 ident = id_unique("anon.%u");
623 ident = new_id_from_str(symbol->string);
626 dbg_info *dbgi = get_dbg_info(&entry->base.source_position);
628 ir_type *entry_irtype = get_ir_type(entry_type);
629 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
631 set_entity_offset(entity, entry->compound_member.offset);
632 set_entity_offset_bits_remainder(entity,
633 entry->compound_member.bit_offset);
635 assert(entry->declaration.kind == DECLARATION_KIND_UNKNOWN);
636 entry->declaration.kind = DECLARATION_KIND_COMPOUND_MEMBER;
637 entry->compound_member.entity = entity;
640 set_type_alignment_bytes(irtype, compound->alignment);
641 set_type_size_bytes(irtype, compound->size);
642 set_type_state(irtype, layout_fixed);
647 static ir_type *create_enum_type(enum_type_t *const type)
649 type->base.firm_type = ir_type_int;
651 ir_mode *const mode = mode_int;
652 tarval *const one = get_mode_one(mode);
653 tarval * tv_next = get_tarval_null(mode);
655 bool constant_folding_old = constant_folding;
656 constant_folding = true;
658 enum_t *enume = type->enume;
659 entity_t *entry = enume->base.next;
660 for (; entry != NULL; entry = entry->base.next) {
661 if (entry->kind != ENTITY_ENUM_VALUE)
664 expression_t *const init = entry->enum_value.value;
666 ir_node *const cnst = expression_to_firm(init);
667 if (!is_Const(cnst)) {
668 panic("couldn't fold constant");
670 tv_next = get_Const_tarval(cnst);
672 entry->enum_value.tv = tv_next;
673 tv_next = tarval_add(tv_next, one);
676 constant_folding = constant_folding_old;
678 return create_atomic_type(type->akind, (const type_t*) type);
681 static ir_type *get_ir_type_incomplete(type_t *type)
683 assert(type != NULL);
684 type = skip_typeref(type);
686 if (type->base.firm_type != NULL) {
687 assert(type->base.firm_type != INVALID_TYPE);
688 return type->base.firm_type;
691 switch (type->kind) {
692 case TYPE_COMPOUND_STRUCT:
693 return create_compound_type(&type->compound, true, COMPOUND_IS_STRUCT);
694 case TYPE_COMPOUND_UNION:
695 return create_compound_type(&type->compound, true, COMPOUND_IS_UNION);
697 return get_ir_type(type);
701 ir_type *get_ir_type(type_t *type)
703 assert(type != NULL);
705 type = skip_typeref(type);
707 if (type->base.firm_type != NULL) {
708 assert(type->base.firm_type != INVALID_TYPE);
709 return type->base.firm_type;
712 ir_type *firm_type = NULL;
713 switch (type->kind) {
715 /* Happens while constant folding, when there was an error */
716 return create_atomic_type(ATOMIC_TYPE_VOID, NULL);
719 firm_type = create_atomic_type(type->atomic.akind, type);
722 firm_type = create_complex_type(&type->complex);
725 firm_type = create_imaginary_type(&type->imaginary);
728 firm_type = create_method_type(&type->function, false);
731 firm_type = create_pointer_type(&type->pointer);
734 firm_type = create_reference_type(&type->reference);
737 firm_type = create_array_type(&type->array);
739 case TYPE_COMPOUND_STRUCT:
740 firm_type = create_compound_type(&type->compound, false, COMPOUND_IS_STRUCT);
742 case TYPE_COMPOUND_UNION:
743 firm_type = create_compound_type(&type->compound, false, COMPOUND_IS_UNION);
746 firm_type = create_enum_type(&type->enumt);
749 firm_type = get_ir_type(type->builtin.real_type);
752 firm_type = create_bitfield_type(&type->bitfield);
760 if (firm_type == NULL)
761 panic("unknown type found");
763 type->base.firm_type = firm_type;
767 static ir_mode *get_ir_mode_storage(type_t *type)
769 ir_type *irtype = get_ir_type(type);
771 /* firm doesn't report a mode for arrays somehow... */
772 if (is_Array_type(irtype)) {
776 ir_mode *mode = get_type_mode(irtype);
777 assert(mode != NULL);
781 static ir_mode *get_ir_mode_arithmetic(type_t *type)
783 ir_mode *mode = get_ir_mode_storage(type);
784 if (mode_is_float(mode) && mode_float_arithmetic != NULL) {
785 return mode_float_arithmetic;
791 /** Names of the runtime functions. */
792 static const struct {
793 int id; /**< the rts id */
794 int n_res; /**< number of return values */
795 const char *name; /**< the name of the rts function */
796 int n_params; /**< number of parameters */
797 unsigned flags; /**< language flags */
799 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
800 { rts_abort, 0, "abort", 0, _C89 },
801 { rts_alloca, 1, "alloca", 1, _ALL },
802 { rts_abs, 1, "abs", 1, _C89 },
803 { rts_labs, 1, "labs", 1, _C89 },
804 { rts_llabs, 1, "llabs", 1, _C99 },
805 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
807 { rts_fabs, 1, "fabs", 1, _C89 },
808 { rts_sqrt, 1, "sqrt", 1, _C89 },
809 { rts_cbrt, 1, "cbrt", 1, _C99 },
810 { rts_exp, 1, "exp", 1, _C89 },
811 { rts_exp2, 1, "exp2", 1, _C89 },
812 { rts_exp10, 1, "exp10", 1, _GNUC },
813 { rts_log, 1, "log", 1, _C89 },
814 { rts_log2, 1, "log2", 1, _C89 },
815 { rts_log10, 1, "log10", 1, _C89 },
816 { rts_pow, 1, "pow", 2, _C89 },
817 { rts_sin, 1, "sin", 1, _C89 },
818 { rts_cos, 1, "cos", 1, _C89 },
819 { rts_tan, 1, "tan", 1, _C89 },
820 { rts_asin, 1, "asin", 1, _C89 },
821 { rts_acos, 1, "acos", 1, _C89 },
822 { rts_atan, 1, "atan", 1, _C89 },
823 { rts_sinh, 1, "sinh", 1, _C89 },
824 { rts_cosh, 1, "cosh", 1, _C89 },
825 { rts_tanh, 1, "tanh", 1, _C89 },
827 { rts_fabsf, 1, "fabsf", 1, _C99 },
828 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
829 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
830 { rts_expf, 1, "expf", 1, _C99 },
831 { rts_exp2f, 1, "exp2f", 1, _C99 },
832 { rts_exp10f, 1, "exp10f", 1, _GNUC },
833 { rts_logf, 1, "logf", 1, _C99 },
834 { rts_log2f, 1, "log2f", 1, _C99 },
835 { rts_log10f, 1, "log10f", 1, _C99 },
836 { rts_powf, 1, "powf", 2, _C99 },
837 { rts_sinf, 1, "sinf", 1, _C99 },
838 { rts_cosf, 1, "cosf", 1, _C99 },
839 { rts_tanf, 1, "tanf", 1, _C99 },
840 { rts_asinf, 1, "asinf", 1, _C99 },
841 { rts_acosf, 1, "acosf", 1, _C99 },
842 { rts_atanf, 1, "atanf", 1, _C99 },
843 { rts_sinhf, 1, "sinhf", 1, _C99 },
844 { rts_coshf, 1, "coshf", 1, _C99 },
845 { rts_tanhf, 1, "tanhf", 1, _C99 },
847 { rts_fabsl, 1, "fabsl", 1, _C99 },
848 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
849 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
850 { rts_expl, 1, "expl", 1, _C99 },
851 { rts_exp2l, 1, "exp2l", 1, _C99 },
852 { rts_exp10l, 1, "exp10l", 1, _GNUC },
853 { rts_logl, 1, "logl", 1, _C99 },
854 { rts_log2l, 1, "log2l", 1, _C99 },
855 { rts_log10l, 1, "log10l", 1, _C99 },
856 { rts_powl, 1, "powl", 2, _C99 },
857 { rts_sinl, 1, "sinl", 1, _C99 },
858 { rts_cosl, 1, "cosl", 1, _C99 },
859 { rts_tanl, 1, "tanl", 1, _C99 },
860 { rts_asinl, 1, "asinl", 1, _C99 },
861 { rts_acosl, 1, "acosl", 1, _C99 },
862 { rts_atanl, 1, "atanl", 1, _C99 },
863 { rts_sinhl, 1, "sinhl", 1, _C99 },
864 { rts_coshl, 1, "coshl", 1, _C99 },
865 { rts_tanhl, 1, "tanhl", 1, _C99 },
867 { rts_strcmp, 1, "strcmp", 2, _C89 },
868 { rts_strncmp, 1, "strncmp", 3, _C89 },
869 { rts_strcpy, 1, "strcpy", 2, _C89 },
870 { rts_strlen, 1, "strlen", 1, _C89 },
871 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
872 { rts_mempcpy, 1, "mempcpy", 3, _GNUC },
873 { rts_memmove, 1, "memmove", 3, _C89 }, /* HMM, man say its C99 */
874 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
875 { rts_memcmp, 1, "memcmp", 3, _C89 }, /* HMM, man say its C99 */
878 static ident *rts_idents[lengthof(rts_data)];
880 static ident* (*create_ld_ident)(entity_t*) = create_name_linux_elf;
883 * Handle GNU attributes for entities
885 * @param ent the entity
886 * @param decl the routine declaration
888 static void handle_decl_modifiers(ir_entity *irentity, entity_t *entity)
890 assert(is_declaration(entity));
891 decl_modifiers_t modifiers = entity->declaration.modifiers;
893 if (is_method_entity(irentity)) {
894 if (modifiers & DM_PURE) {
895 set_entity_additional_property(irentity, mtp_property_pure);
897 if (modifiers & DM_CONST) {
898 set_entity_additional_property(irentity, mtp_property_const);
899 have_const_functions = true;
902 if (modifiers & DM_USED) {
903 add_entity_linkage(irentity, IR_LINKAGE_HIDDEN_USER);
905 if (modifiers & DM_WEAK) {
906 add_entity_linkage(irentity, IR_LINKAGE_WEAK);
910 static bool is_main(entity_t *entity)
912 static symbol_t *sym_main = NULL;
913 if (sym_main == NULL) {
914 sym_main = symbol_table_insert("main");
917 if (entity->base.symbol != sym_main)
919 /* must be in outermost scope */
920 if (entity->base.parent_scope != ¤t_translation_unit->scope)
927 * Creates an entity representing a function.
929 * @param entity the function declaration/definition
930 * @param owner_type the owner type of this function, NULL
931 * for global functions
933 static ir_entity *get_function_entity(entity_t *entity, ir_type *owner_type)
935 assert(entity->kind == ENTITY_FUNCTION);
936 if (entity->function.irentity != NULL) {
937 return entity->function.irentity;
940 entity_t *original_entity = entity;
941 if (entity->function.btk != bk_none) {
942 entity = get_builtin_replacement(entity);
947 if (is_main(entity)) {
948 /* force main to C linkage */
949 type_t *type = entity->declaration.type;
950 assert(is_type_function(type));
951 if (type->function.linkage != LINKAGE_C) {
952 type_t *new_type = duplicate_type(type);
953 new_type->function.linkage = LINKAGE_C;
954 type = identify_new_type(new_type);
955 entity->declaration.type = type;
959 symbol_t *symbol = entity->base.symbol;
960 ident *id = new_id_from_str(symbol->string);
962 /* already an entity defined? */
963 ir_entity *irentity = entitymap_get(&entitymap, symbol);
964 bool const has_body = entity->function.statement != NULL;
965 if (irentity != NULL) {
966 if (get_entity_visibility(irentity) == ir_visibility_external
968 set_entity_visibility(irentity, ir_visibility_default);
973 ir_type *ir_type_method;
974 if (entity->function.need_closure)
975 ir_type_method = create_method_type(&entity->declaration.type->function, true);
977 ir_type_method = get_ir_type(entity->declaration.type);
979 bool nested_function = false;
980 if (owner_type == NULL)
981 owner_type = get_glob_type();
983 nested_function = true;
985 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
986 irentity = new_d_entity(owner_type, id, ir_type_method, dbgi);
990 ld_id = id_unique("inner.%u");
992 ld_id = create_ld_ident(entity);
993 set_entity_ld_ident(irentity, ld_id);
995 handle_decl_modifiers(irentity, entity);
997 if (! nested_function) {
998 /* static inline => local
999 * extern inline => local
1000 * inline without definition => local
1001 * inline with definition => external_visible */
1002 storage_class_tag_t const storage_class
1003 = (storage_class_tag_t) entity->declaration.storage_class;
1004 bool const is_inline = entity->function.is_inline;
1006 if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
1007 set_entity_visibility(irentity, ir_visibility_default);
1008 } else if (storage_class == STORAGE_CLASS_STATIC ||
1009 (is_inline && has_body)) {
1010 set_entity_visibility(irentity, ir_visibility_local);
1011 } else if (has_body) {
1012 set_entity_visibility(irentity, ir_visibility_default);
1014 set_entity_visibility(irentity, ir_visibility_external);
1017 /* nested functions are always local */
1018 set_entity_visibility(irentity, ir_visibility_local);
1021 /* We should check for file scope here, but as long as we compile C only
1022 this is not needed. */
1023 if (! firm_opt.freestanding && !has_body) {
1024 /* check for a known runtime function */
1025 for (size_t i = 0; i < lengthof(rts_data); ++i) {
1026 if (id != rts_idents[i])
1029 /* ignore those rts functions not necessary needed for current mode */
1030 if ((c_mode & rts_data[i].flags) == 0)
1032 assert(rts_entities[rts_data[i].id] == NULL);
1033 rts_entities[rts_data[i].id] = irentity;
1037 entitymap_insert(&entitymap, symbol, irentity);
1040 original_entity->declaration.kind = DECLARATION_KIND_FUNCTION;
1041 original_entity->function.irentity = irentity;
1046 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1048 ir_mode *value_mode = get_irn_mode(value);
1050 if (value_mode == dest_mode || is_Bad(value))
1053 if (dest_mode == mode_b) {
1054 ir_node *zero = new_Const(get_mode_null(value_mode));
1055 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1056 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1060 return new_d_Conv(dbgi, value, dest_mode);
1064 * Creates a Const node representing a constant.
1066 static ir_node *const_to_firm(const const_expression_t *cnst)
1068 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1069 type_t *type = skip_typeref(cnst->base.type);
1070 ir_mode *mode = get_ir_mode_storage(type);
1075 if (mode_is_float(mode)) {
1076 tv = new_tarval_from_double(cnst->v.float_value, mode);
1078 if (mode_is_signed(mode)) {
1079 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1081 len = snprintf(buf, sizeof(buf), "%llu",
1082 (unsigned long long) cnst->v.int_value);
1084 tv = new_tarval_from_str(buf, len, mode);
1087 ir_node *res = new_d_Const(dbgi, tv);
1088 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
1089 return create_conv(dbgi, res, mode_arith);
1093 * Creates a Const node representing a character constant.
1095 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1097 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1098 ir_mode *mode = get_ir_mode_arithmetic(cnst->base.type);
1101 size_t const size = cnst->v.character.size;
1102 if (size == 1 && char_is_signed) {
1103 v = (signed char)cnst->v.character.begin[0];
1106 for (size_t i = 0; i < size; ++i) {
1107 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1111 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1112 tarval *tv = new_tarval_from_str(buf, len, mode);
1114 return new_d_Const(dbgi, tv);
1118 * Creates a Const node representing a wide character constant.
1120 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1122 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1123 ir_mode *mode = get_ir_mode_arithmetic(cnst->base.type);
1125 long long int v = cnst->v.wide_character.begin[0];
1128 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1129 tarval *tv = new_tarval_from_str(buf, len, mode);
1131 return new_d_Const(dbgi, tv);
1135 * Allocate an area of size bytes aligned at alignment
1138 static ir_entity *alloc_trampoline(ir_type *frame_type, int size, unsigned alignment)
1140 static unsigned area_cnt = 0;
1143 ir_type *tp = new_type_array(1, ir_type_char);
1144 set_array_bounds_int(tp, 0, 0, size);
1145 set_type_alignment_bytes(tp, alignment);
1147 snprintf(buf, sizeof(buf), "trampolin%u", area_cnt++);
1148 ident *name = new_id_from_str(buf);
1149 ir_entity *area = new_entity(frame_type, name, tp);
1151 /* mark this entity as compiler generated */
1152 set_entity_compiler_generated(area, 1);
1157 * Return a node representing a trampoline region
1158 * for a given function entity.
1160 * @param dbgi debug info
1161 * @param entity the function entity
1163 static ir_node *get_trampoline_region(dbg_info *dbgi, ir_entity *entity)
1165 ir_entity *region = NULL;
1168 if (current_trampolines != NULL) {
1169 for (i = ARR_LEN(current_trampolines) - 1; i >= 0; --i) {
1170 if (current_trampolines[i].function == entity) {
1171 region = current_trampolines[i].region;
1176 current_trampolines = NEW_ARR_F(trampoline_region, 0);
1178 ir_graph *irg = current_ir_graph;
1179 if (region == NULL) {
1180 /* create a new region */
1181 ir_type *frame_tp = get_irg_frame_type(irg);
1182 trampoline_region reg;
1183 reg.function = entity;
1185 reg.region = alloc_trampoline(frame_tp,
1186 be_params->trampoline_size,
1187 be_params->trampoline_align);
1188 ARR_APP1(trampoline_region, current_trampolines, reg);
1189 region = reg.region;
1191 return new_d_simpleSel(dbgi, get_irg_no_mem(irg), get_irg_frame(irg),
1197 * Creates a SymConst for a given entity.
1199 * @param dbgi debug info
1200 * @param mode the (reference) mode for the SymConst
1201 * @param entity the entity
1203 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1206 assert(entity != NULL);
1207 union symconst_symbol sym;
1208 sym.entity_p = entity;
1209 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1213 * Creates a trampoline for a function represented by an entity.
1215 * @param dbgi debug info
1216 * @param mode the (reference) mode for the function address
1217 * @param entity the function entity
1219 static ir_node *create_trampoline(dbg_info *dbgi, ir_mode *mode,
1222 assert(entity != NULL);
1224 in[0] = get_trampoline_region(dbgi, entity);
1225 in[1] = create_symconst(dbgi, mode, entity);
1226 in[2] = get_irg_frame(current_ir_graph);
1228 ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_inner_trampoline, get_unknown_type());
1229 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1230 return new_Proj(irn, mode, pn_Builtin_1_result);
1234 * Creates a SymConst node representing a string constant.
1236 * @param src_pos the source position of the string constant
1237 * @param id_prefix a prefix for the name of the generated string constant
1238 * @param value the value of the string constant
1240 static ir_node *string_to_firm(const source_position_t *const src_pos,
1241 const char *const id_prefix,
1242 const string_t *const value)
1244 ir_type *const global_type = get_glob_type();
1245 dbg_info *const dbgi = get_dbg_info(src_pos);
1246 ir_type *const type = new_type_array(1, ir_type_const_char);
1248 ident *const id = id_unique(id_prefix);
1249 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1250 set_entity_ld_ident(entity, id);
1251 set_entity_visibility(entity, ir_visibility_local);
1252 add_entity_linkage(entity, IR_LINKAGE_CONSTANT);
1254 ir_type *const elem_type = ir_type_const_char;
1255 ir_mode *const mode = get_type_mode(elem_type);
1257 const char* const string = value->begin;
1258 const size_t slen = value->size;
1260 set_array_lower_bound_int(type, 0, 0);
1261 set_array_upper_bound_int(type, 0, slen);
1262 set_type_size_bytes(type, slen);
1263 set_type_state(type, layout_fixed);
1265 ir_initializer_t *initializer = create_initializer_compound(slen);
1266 for (size_t i = 0; i < slen; ++i) {
1267 tarval *tv = new_tarval_from_long(string[i], mode);
1268 ir_initializer_t *val = create_initializer_tarval(tv);
1269 set_initializer_compound_value(initializer, i, val);
1271 set_entity_initializer(entity, initializer);
1273 return create_symconst(dbgi, mode_P_data, entity);
1277 * Creates a SymConst node representing a string literal.
1279 * @param literal the string literal
1281 static ir_node *string_literal_to_firm(
1282 const string_literal_expression_t* literal)
1284 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1289 * Creates a SymConst node representing a wide string literal.
1291 * @param literal the wide string literal
1293 static ir_node *wide_string_literal_to_firm(
1294 const wide_string_literal_expression_t* const literal)
1296 ir_type *const global_type = get_glob_type();
1297 ir_type *const elem_type = ir_type_wchar_t;
1298 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1299 ir_type *const type = new_type_array(1, elem_type);
1301 ident *const id = id_unique("Lstr.%u");
1302 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1303 set_entity_ld_ident(entity, id);
1304 set_entity_visibility(entity, ir_visibility_local);
1305 add_entity_linkage(entity, IR_LINKAGE_CONSTANT);
1307 ir_mode *const mode = get_type_mode(elem_type);
1309 const wchar_rep_t *const string = literal->value.begin;
1310 const size_t slen = literal->value.size;
1312 set_array_lower_bound_int(type, 0, 0);
1313 set_array_upper_bound_int(type, 0, slen);
1314 set_type_size_bytes(type, slen * get_mode_size_bytes(mode));
1315 set_type_state(type, layout_fixed);
1317 ir_initializer_t *initializer = create_initializer_compound(slen);
1318 for (size_t i = 0; i < slen; ++i) {
1319 tarval *tv = new_tarval_from_long(string[i], mode);
1320 ir_initializer_t *val = create_initializer_tarval(tv);
1321 set_initializer_compound_value(initializer, i, val);
1323 set_entity_initializer(entity, initializer);
1325 return create_symconst(dbgi, mode_P_data, entity);
1329 * Dereference an address.
1331 * @param dbgi debug info
1332 * @param type the type of the dereferenced result (the points_to type)
1333 * @param addr the address to dereference
1335 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1336 ir_node *const addr)
1338 ir_type *irtype = get_ir_type(type);
1339 if (is_compound_type(irtype)
1340 || is_Method_type(irtype)
1341 || is_Array_type(irtype)) {
1345 ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
1346 ? cons_volatile : cons_none;
1347 ir_mode *const mode = get_type_mode(irtype);
1348 ir_node *const memory = get_store();
1349 ir_node *const load = new_d_Load(dbgi, memory, addr, mode, flags);
1350 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1351 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1353 set_store(load_mem);
1355 ir_mode *const mode_arithmetic = get_ir_mode_arithmetic(type);
1356 return create_conv(dbgi, load_res, mode_arithmetic);
1360 * Creates a strict Conv (to the node's mode) if necessary.
1362 * @param dbgi debug info
1363 * @param node the node to strict conv
1365 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1367 ir_mode *mode = get_irn_mode(node);
1369 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1371 if (!mode_is_float(mode))
1374 /* check if there is already a Conv */
1375 if (is_Conv(node)) {
1376 /* convert it into a strict Conv */
1377 set_Conv_strict(node, 1);
1381 /* otherwise create a new one */
1382 return new_d_strictConv(dbgi, node, mode);
1386 * Returns the address of a global variable.
1388 * @param dbgi debug info
1389 * @param variable the variable
1391 static ir_node *get_global_var_address(dbg_info *const dbgi,
1392 const variable_t *const variable)
1394 ir_entity *const irentity = variable->v.entity;
1395 if (variable->thread_local) {
1396 ir_node *const no_mem = new_NoMem();
1397 ir_node *const tls = get_irg_tls(current_ir_graph);
1398 return new_d_simpleSel(dbgi, no_mem, tls, irentity);
1400 return create_symconst(dbgi, mode_P_data, irentity);
1405 * Returns the correct base address depending on whether it is a parameter or a
1406 * normal local variable.
1408 static ir_node *get_local_frame(ir_entity *const ent)
1410 ir_graph *const irg = current_ir_graph;
1411 const ir_type *const owner = get_entity_owner(ent);
1412 if (owner == current_outer_frame || owner == current_outer_value_type) {
1413 assert(current_static_link != NULL);
1414 return current_static_link;
1416 return get_irg_frame(irg);
1421 * Keep all memory edges of the given block.
1423 static void keep_all_memory(ir_node *block)
1425 ir_node *old = get_cur_block();
1427 set_cur_block(block);
1428 keep_alive(get_store());
1429 /* TODO: keep all memory edges from restricted pointers */
1433 static ir_node *reference_expression_enum_value_to_firm(
1434 const reference_expression_t *ref)
1436 entity_t *entity = ref->entity;
1437 type_t *type = skip_typeref(entity->enum_value.enum_type);
1438 /* make sure the type is constructed */
1439 (void) get_ir_type(type);
1441 return new_Const(entity->enum_value.tv);
1444 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1446 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1447 entity_t *entity = ref->entity;
1448 assert(is_declaration(entity));
1449 type_t *type = skip_typeref(entity->declaration.type);
1451 /* make sure the type is constructed */
1452 (void) get_ir_type(type);
1454 if (entity->kind == ENTITY_FUNCTION && entity->function.btk != bk_none) {
1455 ir_entity *irentity = get_function_entity(entity, NULL);
1456 /* for gcc compatibility we have to produce (dummy) addresses for some
1457 * builtins which don't have entities */
1458 if (irentity == NULL) {
1459 if (warning.other) {
1460 warningf(&ref->base.source_position,
1461 "taking address of builtin '%Y'",
1462 ref->entity->base.symbol);
1465 /* simply create a NULL pointer */
1466 ir_mode *mode = get_ir_mode_arithmetic(type_void_ptr);
1467 ir_node *res = new_Const_long(mode, 0);
1473 switch ((declaration_kind_t) entity->declaration.kind) {
1474 case DECLARATION_KIND_UNKNOWN:
1477 case DECLARATION_KIND_LOCAL_VARIABLE: {
1478 ir_mode *const mode = get_ir_mode_storage(type);
1479 ir_node *const value = get_value(entity->variable.v.value_number, mode);
1480 return create_conv(NULL, value, get_ir_mode_arithmetic(type));
1482 case DECLARATION_KIND_PARAMETER: {
1483 ir_mode *const mode = get_ir_mode_storage(type);
1484 ir_node *const value = get_value(entity->parameter.v.value_number,mode);
1485 return create_conv(NULL, value, get_ir_mode_arithmetic(type));
1487 case DECLARATION_KIND_FUNCTION: {
1488 ir_mode *const mode = get_ir_mode_storage(type);
1489 return create_symconst(dbgi, mode, entity->function.irentity);
1491 case DECLARATION_KIND_INNER_FUNCTION: {
1492 ir_mode *const mode = get_ir_mode_storage(type);
1493 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1494 /* inner function not using the closure */
1495 return create_symconst(dbgi, mode, entity->function.irentity);
1497 /* need trampoline here */
1498 return create_trampoline(dbgi, mode, entity->function.irentity);
1501 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1502 const variable_t *variable = &entity->variable;
1503 ir_node *const addr = get_global_var_address(dbgi, variable);
1504 return deref_address(dbgi, variable->base.type, addr);
1507 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1508 ir_entity *irentity = entity->variable.v.entity;
1509 ir_node *frame = get_local_frame(irentity);
1510 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1511 return deref_address(dbgi, entity->declaration.type, sel);
1513 case DECLARATION_KIND_PARAMETER_ENTITY: {
1514 ir_entity *irentity = entity->parameter.v.entity;
1515 ir_node *frame = get_local_frame(irentity);
1516 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1517 return deref_address(dbgi, entity->declaration.type, sel);
1520 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1521 return entity->variable.v.vla_base;
1523 case DECLARATION_KIND_COMPOUND_MEMBER:
1524 panic("not implemented reference type");
1527 panic("reference to declaration with unknown type found");
1530 static ir_node *reference_addr(const reference_expression_t *ref)
1532 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1533 entity_t *entity = ref->entity;
1534 assert(is_declaration(entity));
1536 switch((declaration_kind_t) entity->declaration.kind) {
1537 case DECLARATION_KIND_UNKNOWN:
1539 case DECLARATION_KIND_PARAMETER:
1540 case DECLARATION_KIND_LOCAL_VARIABLE:
1541 /* you can store to a local variable (so we don't panic but return NULL
1542 * as an indicator for no real address) */
1544 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1545 ir_node *const addr = get_global_var_address(dbgi, &entity->variable);
1548 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1549 ir_entity *irentity = entity->variable.v.entity;
1550 ir_node *frame = get_local_frame(irentity);
1551 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1555 case DECLARATION_KIND_PARAMETER_ENTITY: {
1556 ir_entity *irentity = entity->parameter.v.entity;
1557 ir_node *frame = get_local_frame(irentity);
1558 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1563 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1564 return entity->variable.v.vla_base;
1566 case DECLARATION_KIND_FUNCTION: {
1567 type_t *const type = skip_typeref(entity->declaration.type);
1568 ir_mode *const mode = get_ir_mode_storage(type);
1569 return create_symconst(dbgi, mode, entity->function.irentity);
1572 case DECLARATION_KIND_INNER_FUNCTION: {
1573 type_t *const type = skip_typeref(entity->declaration.type);
1574 ir_mode *const mode = get_ir_mode_storage(type);
1575 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1576 /* inner function not using the closure */
1577 return create_symconst(dbgi, mode, entity->function.irentity);
1579 /* need trampoline here */
1580 return create_trampoline(dbgi, mode, entity->function.irentity);
1584 case DECLARATION_KIND_COMPOUND_MEMBER:
1585 panic("not implemented reference type");
1588 panic("reference to declaration with unknown type found");
1592 * Generate an unary builtin.
1594 * @param kind the builtin kind to generate
1595 * @param op the operand
1596 * @param function_type the function type for the GNU builtin routine
1597 * @param db debug info
1599 static ir_node *gen_unary_builtin(ir_builtin_kind kind, expression_t *op, type_t *function_type, dbg_info *db)
1602 in[0] = expression_to_firm(op);
1604 ir_type *tp = get_ir_type(function_type);
1605 ir_type *res = get_method_res_type(tp, 0);
1606 ir_node *irn = new_d_Builtin(db, get_irg_no_mem(current_ir_graph), 1, in, kind, tp);
1607 set_irn_pinned(irn, op_pin_state_floats);
1608 return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result);
1612 * Generate a pinned unary builtin.
1614 * @param kind the builtin kind to generate
1615 * @param op the operand
1616 * @param function_type the function type for the GNU builtin routine
1617 * @param db debug info
1619 static ir_node *gen_unary_builtin_pinned(ir_builtin_kind kind, expression_t *op,
1620 type_t *function_type, dbg_info *db)
1623 in[0] = expression_to_firm(op);
1625 ir_type *tp = get_ir_type(function_type);
1626 ir_type *res = get_method_res_type(tp, 0);
1627 ir_node *mem = get_store();
1628 ir_node *irn = new_d_Builtin(db, mem, 1, in, kind, tp);
1629 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1630 return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result);
1634 * Generate an binary-void-return builtin.
1636 * @param kind the builtin kind to generate
1637 * @param op1 the first operand
1638 * @param op2 the second operand
1639 * @param function_type the function type for the GNU builtin routine
1640 * @param db debug info
1642 static ir_node *gen_binary_builtin_mem(ir_builtin_kind kind, expression_t *op1,
1643 expression_t *op2, type_t *function_type,
1647 in[0] = expression_to_firm(op1);
1648 in[1] = expression_to_firm(op2);
1650 ir_type *tp = get_ir_type(function_type);
1651 ir_node *mem = get_store();
1652 ir_node *irn = new_d_Builtin(db, mem, 2, in, kind, tp);
1653 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1658 * Transform calls to builtin functions.
1660 static ir_node *process_builtin_call(const call_expression_t *call)
1662 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1664 assert(call->function->kind == EXPR_REFERENCE);
1665 reference_expression_t *builtin = &call->function->reference;
1667 type_t *type = skip_typeref(builtin->base.type);
1668 assert(is_type_pointer(type));
1670 type_t *function_type = skip_typeref(type->pointer.points_to);
1672 switch (builtin->entity->function.btk) {
1673 case bk_gnu_builtin_alloca: {
1674 if (call->arguments == NULL || call->arguments->next != NULL) {
1675 panic("invalid number of parameters on __builtin_alloca");
1677 expression_t *argument = call->arguments->expression;
1678 ir_node *size = expression_to_firm(argument);
1680 ir_node *store = get_store();
1681 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1683 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1685 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1690 case bk_gnu_builtin_huge_val:
1691 case bk_gnu_builtin_huge_valf:
1692 case bk_gnu_builtin_huge_vall:
1693 case bk_gnu_builtin_inf:
1694 case bk_gnu_builtin_inff:
1695 case bk_gnu_builtin_infl: {
1696 type_t *type = function_type->function.return_type;
1697 ir_mode *mode = get_ir_mode_arithmetic(type);
1698 tarval *tv = get_mode_infinite(mode);
1699 ir_node *res = new_d_Const(dbgi, tv);
1702 case bk_gnu_builtin_nan:
1703 case bk_gnu_builtin_nanf:
1704 case bk_gnu_builtin_nanl: {
1705 /* Ignore string for now... */
1706 assert(is_type_function(function_type));
1707 type_t *type = function_type->function.return_type;
1708 ir_mode *mode = get_ir_mode_arithmetic(type);
1709 tarval *tv = get_mode_NAN(mode);
1710 ir_node *res = new_d_Const(dbgi, tv);
1713 case bk_gnu_builtin_expect: {
1714 expression_t *argument = call->arguments->expression;
1715 return _expression_to_firm(argument);
1717 case bk_gnu_builtin_va_end:
1718 /* evaluate the argument of va_end for its side effects */
1719 _expression_to_firm(call->arguments->expression);
1721 case bk_gnu_builtin_frame_address: {
1722 expression_t *const expression = call->arguments->expression;
1723 bool val = fold_constant_to_bool(expression);
1726 return get_irg_frame(current_ir_graph);
1728 /* get the argument */
1731 in[0] = expression_to_firm(expression);
1732 in[1] = get_irg_frame(current_ir_graph);
1733 ir_type *tp = get_ir_type(function_type);
1734 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_frame_address, tp);
1735 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1738 case bk_gnu_builtin_return_address: {
1740 expression_t *const expression = call->arguments->expression;
1743 in[0] = expression_to_firm(expression);
1744 in[1] = get_irg_frame(current_ir_graph);
1745 ir_type *tp = get_ir_type(function_type);
1746 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_return_address, tp);
1747 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1749 case bk_gnu_builtin_ffs:
1750 return gen_unary_builtin(ir_bk_ffs, call->arguments->expression, function_type, dbgi);
1751 case bk_gnu_builtin_clz:
1752 return gen_unary_builtin(ir_bk_clz, call->arguments->expression, function_type, dbgi);
1753 case bk_gnu_builtin_ctz:
1754 return gen_unary_builtin(ir_bk_ctz, call->arguments->expression, function_type, dbgi);
1755 case bk_gnu_builtin_popcount:
1756 case bk_ms__popcount:
1757 return gen_unary_builtin(ir_bk_popcount, call->arguments->expression, function_type, dbgi);
1758 case bk_gnu_builtin_parity:
1759 return gen_unary_builtin(ir_bk_parity, call->arguments->expression, function_type, dbgi);
1760 case bk_gnu_builtin_prefetch: {
1761 call_argument_t *const args = call->arguments;
1762 expression_t *const addr = args->expression;
1765 in[0] = _expression_to_firm(addr);
1766 if (args->next != NULL) {
1767 expression_t *const rw = args->next->expression;
1769 in[1] = _expression_to_firm(rw);
1771 if (args->next->next != NULL) {
1772 expression_t *const locality = args->next->next->expression;
1774 in[2] = expression_to_firm(locality);
1776 in[2] = new_Const_long(mode_int, 3);
1779 in[1] = new_Const_long(mode_int, 0);
1780 in[2] = new_Const_long(mode_int, 3);
1782 ir_type *tp = get_ir_type(function_type);
1783 ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_prefetch, tp);
1784 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1787 case bk_gnu_builtin_trap:
1790 ir_type *tp = get_ir_type(function_type);
1791 ir_node *irn = new_d_Builtin(dbgi, get_store(), 0, NULL, ir_bk_trap, tp);
1792 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1795 case bk_ms__debugbreak: {
1796 ir_type *tp = get_ir_type(function_type);
1797 ir_node *irn = new_d_Builtin(dbgi, get_store(), 0, NULL, ir_bk_debugbreak, tp);
1798 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1801 case bk_ms_ReturnAddress: {
1804 in[0] = new_Const_long(mode_int, 0);
1805 in[1] = get_irg_frame(current_ir_graph);
1806 ir_type *tp = get_ir_type(function_type);
1807 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_return_address, tp);
1808 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1811 case bk_ms_rotl64: {
1812 ir_node *val = expression_to_firm(call->arguments->expression);
1813 ir_node *shf = expression_to_firm(call->arguments->next->expression);
1814 ir_mode *mode = get_irn_mode(val);
1815 return new_d_Rotl(dbgi, val, create_conv(dbgi, shf, mode_uint), mode);
1818 case bk_ms_rotr64: {
1819 ir_node *val = expression_to_firm(call->arguments->expression);
1820 ir_node *shf = expression_to_firm(call->arguments->next->expression);
1821 ir_mode *mode = get_irn_mode(val);
1822 ir_node *c = new_Const_long(mode_uint, get_mode_size_bits(mode));
1823 ir_node *sub = new_d_Sub(dbgi, c, create_conv(dbgi, shf, mode_uint), mode_uint);
1824 return new_d_Rotl(dbgi, val, sub, mode);
1826 case bk_ms_byteswap_ushort:
1827 case bk_ms_byteswap_ulong:
1828 case bk_ms_byteswap_uint64:
1829 return gen_unary_builtin(ir_bk_bswap, call->arguments->expression, function_type, dbgi);
1832 case bk_ms__indword:
1833 return gen_unary_builtin_pinned(ir_bk_inport, call->arguments->expression, function_type, dbgi);
1834 case bk_ms__outbyte:
1835 case bk_ms__outword:
1836 case bk_ms__outdword:
1837 return gen_binary_builtin_mem(ir_bk_outport, call->arguments->expression,
1838 call->arguments->next->expression, function_type, dbgi);
1840 panic("unsupported builtin found");
1845 * Transform a call expression.
1846 * Handles some special cases, like alloca() calls, which must be resolved
1847 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1848 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1851 static ir_node *call_expression_to_firm(const call_expression_t *const call)
1853 dbg_info *const dbgi = get_dbg_info(&call->base.source_position);
1854 assert(get_cur_block() != NULL);
1856 expression_t *function = call->function;
1857 if (function->kind == EXPR_REFERENCE) {
1858 const reference_expression_t *ref = &function->reference;
1859 entity_t *entity = ref->entity;
1861 if (entity->kind == ENTITY_FUNCTION) {
1862 ir_entity *irentity = entity->function.irentity;
1863 if (irentity == NULL)
1864 irentity = get_function_entity(entity, NULL);
1866 if (irentity == NULL && entity->function.btk != bk_none) {
1867 return process_builtin_call(call);
1870 if (irentity == rts_entities[rts_alloca]) {
1871 /* handle alloca() call */
1872 expression_t *argument = call->arguments->expression;
1873 ir_node *size = expression_to_firm(argument);
1874 ir_mode *mode = get_ir_mode_arithmetic(type_size_t);
1876 size = create_conv(dbgi, size, mode);
1878 ir_node *store = get_store();
1879 ir_node *alloca = new_d_Alloc(dbgi, store, size,
1880 firm_unknown_type, stack_alloc);
1881 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1883 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1889 ir_node *callee = expression_to_firm(function);
1891 type_t *type = skip_typeref(function->base.type);
1892 assert(is_type_pointer(type));
1893 pointer_type_t *pointer_type = &type->pointer;
1894 type_t *points_to = skip_typeref(pointer_type->points_to);
1895 assert(is_type_function(points_to));
1896 function_type_t *function_type = &points_to->function;
1898 int n_parameters = 0;
1899 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1900 ir_type *new_method_type = NULL;
1901 if (function_type->variadic || function_type->unspecified_parameters) {
1902 const call_argument_t *argument = call->arguments;
1903 for ( ; argument != NULL; argument = argument->next) {
1907 /* we need to construct a new method type matching the call
1909 type_dbg_info *tdbgi = get_type_dbg_info_((const type_t*) function_type);
1910 int n_res = get_method_n_ress(ir_method_type);
1911 new_method_type = new_d_type_method(n_parameters, n_res, tdbgi);
1912 set_method_calling_convention(new_method_type,
1913 get_method_calling_convention(ir_method_type));
1914 set_method_additional_properties(new_method_type,
1915 get_method_additional_properties(ir_method_type));
1916 set_method_variadicity(new_method_type,
1917 get_method_variadicity(ir_method_type));
1919 for (int i = 0; i < n_res; ++i) {
1920 set_method_res_type(new_method_type, i,
1921 get_method_res_type(ir_method_type, i));
1923 argument = call->arguments;
1924 for (int i = 0; i < n_parameters; ++i, argument = argument->next) {
1925 expression_t *expression = argument->expression;
1926 ir_type *irtype = get_ir_type(expression->base.type);
1927 set_method_param_type(new_method_type, i, irtype);
1929 ir_method_type = new_method_type;
1931 n_parameters = get_method_n_params(ir_method_type);
1934 ir_node *in[n_parameters];
1936 const call_argument_t *argument = call->arguments;
1937 for (int n = 0; n < n_parameters; ++n) {
1938 expression_t *expression = argument->expression;
1939 ir_node *arg_node = expression_to_firm(expression);
1941 type_t *type = skip_typeref(expression->base.type);
1942 if (!is_type_compound(type)) {
1943 ir_mode *mode = get_ir_mode_storage(expression->base.type);
1944 arg_node = create_conv(dbgi, arg_node, mode);
1945 arg_node = do_strict_conv(dbgi, arg_node);
1950 argument = argument->next;
1953 ir_node *store = get_store();
1954 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1956 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M);
1959 type_t *return_type = skip_typeref(function_type->return_type);
1960 ir_node *result = NULL;
1962 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1963 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1965 if (is_type_scalar(return_type)) {
1966 ir_mode *mode = get_ir_mode_storage(return_type);
1967 result = new_d_Proj(dbgi, resproj, mode, 0);
1968 ir_mode *mode_arith = get_ir_mode_arithmetic(return_type);
1969 result = create_conv(NULL, result, mode_arith);
1971 ir_mode *mode = mode_P_data;
1972 result = new_d_Proj(dbgi, resproj, mode, 0);
1976 if (function->kind == EXPR_REFERENCE &&
1977 function->reference.entity->declaration.modifiers & DM_NORETURN) {
1978 /* A dead end: Keep the Call and the Block. Also place all further
1979 * nodes into a new and unreachable block. */
1981 keep_alive(get_cur_block());
1988 static void statement_to_firm(statement_t *statement);
1989 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1991 static ir_node *expression_to_addr(const expression_t *expression);
1992 static ir_node *create_condition_evaluation(const expression_t *expression,
1993 ir_node *true_block,
1994 ir_node *false_block);
1996 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1999 if (!is_type_compound(type)) {
2000 ir_mode *mode = get_ir_mode_storage(type);
2001 value = create_conv(dbgi, value, mode);
2002 value = do_strict_conv(dbgi, value);
2005 ir_node *memory = get_store();
2007 if (is_type_scalar(type)) {
2008 ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
2009 ? cons_volatile : cons_none;
2010 ir_node *store = new_d_Store(dbgi, memory, addr, value, flags);
2011 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
2012 set_store(store_mem);
2014 ir_type *irtype = get_ir_type(type);
2015 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
2016 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
2017 set_store(copyb_mem);
2021 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
2023 tarval *all_one = get_mode_all_one(mode);
2024 int mode_size = get_mode_size_bits(mode);
2026 assert(offset >= 0);
2028 assert(offset + size <= mode_size);
2029 if (size == mode_size) {
2033 long shiftr = get_mode_size_bits(mode) - size;
2034 long shiftl = offset;
2035 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
2036 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
2037 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
2038 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
2043 static ir_node *bitfield_store_to_firm(dbg_info *dbgi,
2044 ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile)
2046 ir_type *entity_type = get_entity_type(entity);
2047 ir_type *base_type = get_primitive_base_type(entity_type);
2048 assert(base_type != NULL);
2049 ir_mode *mode = get_type_mode(base_type);
2051 value = create_conv(dbgi, value, mode);
2053 /* kill upper bits of value and shift to right position */
2054 int bitoffset = get_entity_offset_bits_remainder(entity);
2055 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
2057 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
2058 ir_node *mask_node = new_d_Const(dbgi, mask);
2059 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
2060 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
2061 ir_node *shiftcount = new_d_Const(dbgi, shiftl);
2062 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
2064 /* load current value */
2065 ir_node *mem = get_store();
2066 ir_node *load = new_d_Load(dbgi, mem, addr, mode,
2067 set_volatile ? cons_volatile : cons_none);
2068 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
2069 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
2070 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
2071 tarval *inv_mask = tarval_not(shift_mask);
2072 ir_node *inv_mask_node = new_d_Const(dbgi, inv_mask);
2073 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
2075 /* construct new value and store */
2076 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
2077 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val,
2078 set_volatile ? cons_volatile : cons_none);
2079 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
2080 set_store(store_mem);
2082 return value_masked;
2085 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
2088 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2089 type_t *type = expression->base.type;
2090 ir_mode *mode = get_ir_mode_storage(type);
2091 ir_node *mem = get_store();
2092 ir_node *load = new_d_Load(dbgi, mem, addr, mode, cons_none);
2093 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
2094 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
2096 load_res = create_conv(dbgi, load_res, mode_int);
2098 set_store(load_mem);
2100 /* kill upper bits */
2101 assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER);
2102 ir_entity *entity = expression->compound_entry->compound_member.entity;
2103 int bitoffset = get_entity_offset_bits_remainder(entity);
2104 ir_type *entity_type = get_entity_type(entity);
2105 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
2106 long shift_bitsl = machine_size - bitoffset - bitsize;
2107 assert(shift_bitsl >= 0);
2108 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
2109 ir_node *countl = new_d_Const(dbgi, tvl);
2110 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
2112 long shift_bitsr = bitoffset + shift_bitsl;
2113 assert(shift_bitsr <= (long) machine_size);
2114 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
2115 ir_node *countr = new_d_Const(dbgi, tvr);
2117 if (mode_is_signed(mode)) {
2118 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
2120 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
2123 return create_conv(dbgi, shiftr, mode);
2126 /* make sure the selected compound type is constructed */
2127 static void construct_select_compound(const select_expression_t *expression)
2129 type_t *type = skip_typeref(expression->compound->base.type);
2130 if (is_type_pointer(type)) {
2131 type = type->pointer.points_to;
2133 (void) get_ir_type(type);
2136 static ir_node *set_value_for_expression_addr(const expression_t *expression,
2137 ir_node *value, ir_node *addr)
2139 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2140 type_t *type = skip_typeref(expression->base.type);
2142 if (!is_type_compound(type)) {
2143 ir_mode *mode = get_ir_mode_storage(type);
2144 value = create_conv(dbgi, value, mode);
2145 value = do_strict_conv(dbgi, value);
2148 if (expression->kind == EXPR_REFERENCE) {
2149 const reference_expression_t *ref = &expression->reference;
2151 entity_t *entity = ref->entity;
2152 assert(is_declaration(entity));
2153 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2154 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2155 set_value(entity->variable.v.value_number, value);
2157 } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2158 set_value(entity->parameter.v.value_number, value);
2164 addr = expression_to_addr(expression);
2165 assert(addr != NULL);
2167 if (expression->kind == EXPR_SELECT) {
2168 const select_expression_t *select = &expression->select;
2170 construct_select_compound(select);
2172 entity_t *entity = select->compound_entry;
2173 assert(entity->kind == ENTITY_COMPOUND_MEMBER);
2174 if (entity->declaration.type->kind == TYPE_BITFIELD) {
2175 ir_entity *irentity = entity->compound_member.entity;
2177 = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
2178 value = bitfield_store_to_firm(dbgi, irentity, addr, value,
2184 assign_value(dbgi, addr, type, value);
2188 static void set_value_for_expression(const expression_t *expression,
2191 set_value_for_expression_addr(expression, value, NULL);
2194 static ir_node *get_value_from_lvalue(const expression_t *expression,
2197 if (expression->kind == EXPR_REFERENCE) {
2198 const reference_expression_t *ref = &expression->reference;
2200 entity_t *entity = ref->entity;
2201 assert(entity->kind == ENTITY_VARIABLE
2202 || entity->kind == ENTITY_PARAMETER);
2203 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2205 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2206 value_number = entity->variable.v.value_number;
2207 assert(addr == NULL);
2208 type_t *type = skip_typeref(expression->base.type);
2209 ir_mode *mode = get_ir_mode_storage(type);
2210 ir_node *res = get_value(value_number, mode);
2211 return create_conv(NULL, res, get_ir_mode_arithmetic(type));
2212 } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2213 value_number = entity->parameter.v.value_number;
2214 assert(addr == NULL);
2215 type_t *type = skip_typeref(expression->base.type);
2216 ir_mode *mode = get_ir_mode_storage(type);
2217 ir_node *res = get_value(value_number, mode);
2218 return create_conv(NULL, res, get_ir_mode_arithmetic(type));
2222 assert(addr != NULL);
2223 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2226 if (expression->kind == EXPR_SELECT &&
2227 expression->select.compound_entry->declaration.type->kind == TYPE_BITFIELD){
2228 construct_select_compound(&expression->select);
2229 value = bitfield_extract_to_firm(&expression->select, addr);
2231 value = deref_address(dbgi, expression->base.type, addr);
2238 static ir_node *create_incdec(const unary_expression_t *expression)
2240 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2241 const expression_t *value_expr = expression->value;
2242 ir_node *addr = expression_to_addr(value_expr);
2243 ir_node *value = get_value_from_lvalue(value_expr, addr);
2245 type_t *type = skip_typeref(expression->base.type);
2246 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2249 if (is_type_pointer(type)) {
2250 pointer_type_t *pointer_type = &type->pointer;
2251 offset = get_type_size_node(pointer_type->points_to);
2253 assert(is_type_arithmetic(type));
2254 offset = new_Const(get_mode_one(mode));
2258 ir_node *store_value;
2259 switch(expression->base.kind) {
2260 case EXPR_UNARY_POSTFIX_INCREMENT:
2262 store_value = new_d_Add(dbgi, value, offset, mode);
2264 case EXPR_UNARY_POSTFIX_DECREMENT:
2266 store_value = new_d_Sub(dbgi, value, offset, mode);
2268 case EXPR_UNARY_PREFIX_INCREMENT:
2269 result = new_d_Add(dbgi, value, offset, mode);
2270 store_value = result;
2272 case EXPR_UNARY_PREFIX_DECREMENT:
2273 result = new_d_Sub(dbgi, value, offset, mode);
2274 store_value = result;
2277 panic("no incdec expr in create_incdec");
2280 set_value_for_expression_addr(value_expr, store_value, addr);
2285 static bool is_local_variable(expression_t *expression)
2287 if (expression->kind != EXPR_REFERENCE)
2289 reference_expression_t *ref_expr = &expression->reference;
2290 entity_t *entity = ref_expr->entity;
2291 if (entity->kind != ENTITY_VARIABLE)
2293 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2294 return entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE;
2297 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
2300 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
2301 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
2302 case EXPR_BINARY_NOTEQUAL:
2303 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
2304 case EXPR_BINARY_ISLESS:
2305 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
2306 case EXPR_BINARY_ISLESSEQUAL:
2307 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
2308 case EXPR_BINARY_ISGREATER:
2309 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
2310 case EXPR_BINARY_ISGREATEREQUAL:
2311 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
2312 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
2317 panic("trying to get pn_Cmp from non-comparison binexpr type");
2321 * Handle the assume optimizer hint: check if a Confirm
2322 * node can be created.
2324 * @param dbi debug info
2325 * @param expr the IL assume expression
2327 * we support here only some simple cases:
2332 static ir_node *handle_assume_compare(dbg_info *dbi,
2333 const binary_expression_t *expression)
2335 expression_t *op1 = expression->left;
2336 expression_t *op2 = expression->right;
2337 entity_t *var2, *var = NULL;
2338 ir_node *res = NULL;
2341 cmp_val = get_pnc(expression->base.kind, op1->base.type);
2343 if (is_local_variable(op1) && is_local_variable(op2)) {
2344 var = op1->reference.entity;
2345 var2 = op2->reference.entity;
2347 type_t *const type = skip_typeref(var->declaration.type);
2348 ir_mode *const mode = get_ir_mode_storage(type);
2350 ir_node *const irn1 = get_value(var->variable.v.value_number, mode);
2351 ir_node *const irn2 = get_value(var2->variable.v.value_number, mode);
2353 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
2354 set_value(var2->variable.v.value_number, res);
2356 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
2357 set_value(var->variable.v.value_number, res);
2363 if (is_local_variable(op1) && is_constant_expression(op2)) {
2364 var = op1->reference.entity;
2366 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2367 cmp_val = get_inversed_pnc(cmp_val);
2368 var = op2->reference.entity;
2373 type_t *const type = skip_typeref(var->declaration.type);
2374 ir_mode *const mode = get_ir_mode_storage(type);
2376 res = get_value(var->variable.v.value_number, mode);
2377 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2378 set_value(var->variable.v.value_number, res);
2384 * Handle the assume optimizer hint.
2386 * @param dbi debug info
2387 * @param expr the IL assume expression
2389 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression)
2391 switch(expression->kind) {
2392 case EXPR_BINARY_EQUAL:
2393 case EXPR_BINARY_NOTEQUAL:
2394 case EXPR_BINARY_LESS:
2395 case EXPR_BINARY_LESSEQUAL:
2396 case EXPR_BINARY_GREATER:
2397 case EXPR_BINARY_GREATEREQUAL:
2398 return handle_assume_compare(dbi, &expression->binary);
2404 static ir_node *create_cast(dbg_info *dbgi, ir_node *value_node,
2405 type_t *from_type, type_t *type)
2407 type = skip_typeref(type);
2408 if (!is_type_scalar(type)) {
2409 /* make sure firm type is constructed */
2410 (void) get_ir_type(type);
2414 from_type = skip_typeref(from_type);
2415 ir_mode *mode = get_ir_mode_storage(type);
2416 /* check for conversion from / to __based types */
2417 if (is_type_pointer(type) && is_type_pointer(from_type)) {
2418 const variable_t *from_var = from_type->pointer.base_variable;
2419 const variable_t *to_var = type->pointer.base_variable;
2420 if (from_var != to_var) {
2421 if (from_var != NULL) {
2422 ir_node *const addr = get_global_var_address(dbgi, from_var);
2423 ir_node *const base = deref_address(dbgi, from_var->base.type, addr);
2424 value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(from_type));
2426 if (to_var != NULL) {
2427 ir_node *const addr = get_global_var_address(dbgi, to_var);
2428 ir_node *const base = deref_address(dbgi, to_var->base.type, addr);
2429 value_node = new_d_Sub(dbgi, value_node, base, mode);
2434 if (is_type_atomic(type, ATOMIC_TYPE_BOOL)) {
2435 /* bool adjustments (we save a mode_Bu, but have to temporarily
2436 * convert to mode_b so we only get a 0/1 value */
2437 value_node = create_conv(dbgi, value_node, mode_b);
2440 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
2441 ir_node *node = create_conv(dbgi, value_node, mode);
2442 node = do_strict_conv(dbgi, node);
2443 node = create_conv(dbgi, node, mode_arith);
2448 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2450 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2451 type_t *type = skip_typeref(expression->base.type);
2453 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2454 return expression_to_addr(expression->value);
2456 const expression_t *value = expression->value;
2458 switch(expression->base.kind) {
2459 case EXPR_UNARY_NEGATE: {
2460 ir_node *value_node = expression_to_firm(value);
2461 ir_mode *mode = get_ir_mode_arithmetic(type);
2462 return new_d_Minus(dbgi, value_node, mode);
2464 case EXPR_UNARY_PLUS:
2465 return expression_to_firm(value);
2466 case EXPR_UNARY_BITWISE_NEGATE: {
2467 ir_node *value_node = expression_to_firm(value);
2468 ir_mode *mode = get_ir_mode_arithmetic(type);
2469 return new_d_Not(dbgi, value_node, mode);
2471 case EXPR_UNARY_NOT: {
2472 ir_node *value_node = _expression_to_firm(value);
2473 value_node = create_conv(dbgi, value_node, mode_b);
2474 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2477 case EXPR_UNARY_DEREFERENCE: {
2478 ir_node *value_node = expression_to_firm(value);
2479 type_t *value_type = skip_typeref(value->base.type);
2480 assert(is_type_pointer(value_type));
2482 /* check for __based */
2483 const variable_t *const base_var = value_type->pointer.base_variable;
2484 if (base_var != NULL) {
2485 ir_node *const addr = get_global_var_address(dbgi, base_var);
2486 ir_node *const base = deref_address(dbgi, base_var->base.type, addr);
2487 value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(value_type));
2489 type_t *points_to = value_type->pointer.points_to;
2490 return deref_address(dbgi, points_to, value_node);
2492 case EXPR_UNARY_POSTFIX_INCREMENT:
2493 case EXPR_UNARY_POSTFIX_DECREMENT:
2494 case EXPR_UNARY_PREFIX_INCREMENT:
2495 case EXPR_UNARY_PREFIX_DECREMENT:
2496 return create_incdec(expression);
2497 case EXPR_UNARY_CAST_IMPLICIT:
2498 case EXPR_UNARY_CAST: {
2499 ir_node *value_node = expression_to_firm(value);
2500 type_t *from_type = value->base.type;
2501 return create_cast(dbgi, value_node, from_type, type);
2503 case EXPR_UNARY_ASSUME:
2504 if (firm_opt.confirm)
2505 return handle_assume(dbgi, value);
2512 panic("invalid UNEXPR type found");
2516 * produces a 0/1 depending of the value of a mode_b node
2518 static ir_node *produce_condition_result(const expression_t *expression,
2519 ir_mode *mode, dbg_info *dbgi)
2521 ir_node *cur_block = get_cur_block();
2523 ir_node *one_block = new_immBlock();
2524 set_cur_block(one_block);
2525 ir_node *one = new_Const(get_mode_one(mode));
2526 ir_node *jmp_one = new_d_Jmp(dbgi);
2528 ir_node *zero_block = new_immBlock();
2529 set_cur_block(zero_block);
2530 ir_node *zero = new_Const(get_mode_null(mode));
2531 ir_node *jmp_zero = new_d_Jmp(dbgi);
2533 set_cur_block(cur_block);
2534 create_condition_evaluation(expression, one_block, zero_block);
2535 mature_immBlock(one_block);
2536 mature_immBlock(zero_block);
2538 ir_node *in_cf[2] = { jmp_one, jmp_zero };
2539 new_Block(2, in_cf);
2541 ir_node *in[2] = { one, zero };
2542 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2547 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2548 ir_node *value, type_t *type)
2550 ir_mode *const mode = get_ir_mode_arithmetic(type_ptrdiff_t);
2551 assert(is_type_pointer(type));
2552 pointer_type_t *const pointer_type = &type->pointer;
2553 type_t *const points_to = skip_typeref(pointer_type->points_to);
2554 ir_node * elem_size = get_type_size_node(points_to);
2555 elem_size = create_conv(dbgi, elem_size, mode);
2556 value = create_conv(dbgi, value, mode);
2557 ir_node *const mul = new_d_Mul(dbgi, value, elem_size, mode);
2561 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2562 ir_node *left, ir_node *right)
2565 type_t *type_left = skip_typeref(expression->left->base.type);
2566 type_t *type_right = skip_typeref(expression->right->base.type);
2568 expression_kind_t kind = expression->base.kind;
2571 case EXPR_BINARY_SHIFTLEFT:
2572 case EXPR_BINARY_SHIFTRIGHT:
2573 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2574 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2575 mode = get_irn_mode(left);
2576 right = create_conv(dbgi, right, mode_uint);
2579 case EXPR_BINARY_SUB:
2580 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2581 const pointer_type_t *const ptr_type = &type_left->pointer;
2583 mode = get_ir_mode_arithmetic(expression->base.type);
2584 ir_node *const elem_size = get_type_size_node(ptr_type->points_to);
2585 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2586 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2587 ir_node *const no_mem = new_NoMem();
2588 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2589 mode, op_pin_state_floats);
2590 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2593 case EXPR_BINARY_SUB_ASSIGN:
2594 if (is_type_pointer(type_left)) {
2595 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2596 mode = get_ir_mode_arithmetic(type_left);
2601 case EXPR_BINARY_ADD:
2602 case EXPR_BINARY_ADD_ASSIGN:
2603 if (is_type_pointer(type_left)) {
2604 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2605 mode = get_ir_mode_arithmetic(type_left);
2607 } else if (is_type_pointer(type_right)) {
2608 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2609 mode = get_ir_mode_arithmetic(type_right);
2616 mode = get_ir_mode_arithmetic(type_right);
2617 left = create_conv(dbgi, left, mode);
2622 case EXPR_BINARY_ADD_ASSIGN:
2623 case EXPR_BINARY_ADD:
2624 return new_d_Add(dbgi, left, right, mode);
2625 case EXPR_BINARY_SUB_ASSIGN:
2626 case EXPR_BINARY_SUB:
2627 return new_d_Sub(dbgi, left, right, mode);
2628 case EXPR_BINARY_MUL_ASSIGN:
2629 case EXPR_BINARY_MUL:
2630 return new_d_Mul(dbgi, left, right, mode);
2631 case EXPR_BINARY_BITWISE_AND:
2632 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2633 return new_d_And(dbgi, left, right, mode);
2634 case EXPR_BINARY_BITWISE_OR:
2635 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2636 return new_d_Or(dbgi, left, right, mode);
2637 case EXPR_BINARY_BITWISE_XOR:
2638 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2639 return new_d_Eor(dbgi, left, right, mode);
2640 case EXPR_BINARY_SHIFTLEFT:
2641 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2642 return new_d_Shl(dbgi, left, right, mode);
2643 case EXPR_BINARY_SHIFTRIGHT:
2644 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2645 if (mode_is_signed(mode)) {
2646 return new_d_Shrs(dbgi, left, right, mode);
2648 return new_d_Shr(dbgi, left, right, mode);
2650 case EXPR_BINARY_DIV:
2651 case EXPR_BINARY_DIV_ASSIGN: {
2652 ir_node *pin = new_Pin(new_NoMem());
2655 if (mode_is_float(mode)) {
2656 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2657 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2659 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2660 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2664 case EXPR_BINARY_MOD:
2665 case EXPR_BINARY_MOD_ASSIGN: {
2666 ir_node *pin = new_Pin(new_NoMem());
2667 assert(!mode_is_float(mode));
2668 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2669 op_pin_state_floats);
2670 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2674 panic("unexpected expression kind");
2678 static ir_node *create_lazy_op(const binary_expression_t *expression)
2680 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2681 type_t *type = skip_typeref(expression->base.type);
2682 ir_mode *mode = get_ir_mode_arithmetic(type);
2684 if (is_constant_expression(expression->left)) {
2685 bool val = fold_constant_to_bool(expression->left);
2686 expression_kind_t ekind = expression->base.kind;
2687 assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
2688 if (ekind == EXPR_BINARY_LOGICAL_AND) {
2690 return new_Const(get_mode_null(mode));
2694 return new_Const(get_mode_one(mode));
2698 if (is_constant_expression(expression->right)) {
2699 bool valr = fold_constant_to_bool(expression->right);
2701 new_Const(get_mode_one(mode)) :
2702 new_Const(get_mode_null(mode));
2705 return produce_condition_result(expression->right, mode, dbgi);
2708 return produce_condition_result((const expression_t*) expression, mode,
2712 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2713 ir_node *right, ir_mode *mode);
2715 static ir_node *create_assign_binop(const binary_expression_t *expression)
2717 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2718 const expression_t *left_expr = expression->left;
2719 type_t *type = skip_typeref(left_expr->base.type);
2720 ir_node *right = expression_to_firm(expression->right);
2721 ir_node *left_addr = expression_to_addr(left_expr);
2722 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2723 ir_node *result = create_op(dbgi, expression, left, right);
2725 result = create_cast(dbgi, result, expression->right->base.type, type);
2726 result = do_strict_conv(dbgi, result);
2728 result = set_value_for_expression_addr(left_expr, result, left_addr);
2730 if (!is_type_compound(type)) {
2731 ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
2732 result = create_conv(dbgi, result, mode_arithmetic);
2737 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2739 expression_kind_t kind = expression->base.kind;
2742 case EXPR_BINARY_EQUAL:
2743 case EXPR_BINARY_NOTEQUAL:
2744 case EXPR_BINARY_LESS:
2745 case EXPR_BINARY_LESSEQUAL:
2746 case EXPR_BINARY_GREATER:
2747 case EXPR_BINARY_GREATEREQUAL:
2748 case EXPR_BINARY_ISGREATER:
2749 case EXPR_BINARY_ISGREATEREQUAL:
2750 case EXPR_BINARY_ISLESS:
2751 case EXPR_BINARY_ISLESSEQUAL:
2752 case EXPR_BINARY_ISLESSGREATER:
2753 case EXPR_BINARY_ISUNORDERED: {
2754 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2755 ir_node *left = expression_to_firm(expression->left);
2756 ir_node *right = expression_to_firm(expression->right);
2757 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2758 long pnc = get_pnc(kind, expression->left->base.type);
2759 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2762 case EXPR_BINARY_ASSIGN: {
2763 ir_node *addr = expression_to_addr(expression->left);
2764 ir_node *right = expression_to_firm(expression->right);
2766 = set_value_for_expression_addr(expression->left, right, addr);
2768 type_t *type = skip_typeref(expression->base.type);
2769 if (!is_type_compound(type)) {
2770 ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
2771 res = create_conv(NULL, res, mode_arithmetic);
2775 case EXPR_BINARY_ADD:
2776 case EXPR_BINARY_SUB:
2777 case EXPR_BINARY_MUL:
2778 case EXPR_BINARY_DIV:
2779 case EXPR_BINARY_MOD:
2780 case EXPR_BINARY_BITWISE_AND:
2781 case EXPR_BINARY_BITWISE_OR:
2782 case EXPR_BINARY_BITWISE_XOR:
2783 case EXPR_BINARY_SHIFTLEFT:
2784 case EXPR_BINARY_SHIFTRIGHT:
2786 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2787 ir_node *left = expression_to_firm(expression->left);
2788 ir_node *right = expression_to_firm(expression->right);
2789 return create_op(dbgi, expression, left, right);
2791 case EXPR_BINARY_LOGICAL_AND:
2792 case EXPR_BINARY_LOGICAL_OR:
2793 return create_lazy_op(expression);
2794 case EXPR_BINARY_COMMA:
2795 /* create side effects of left side */
2796 (void) expression_to_firm(expression->left);
2797 return _expression_to_firm(expression->right);
2799 case EXPR_BINARY_ADD_ASSIGN:
2800 case EXPR_BINARY_SUB_ASSIGN:
2801 case EXPR_BINARY_MUL_ASSIGN:
2802 case EXPR_BINARY_MOD_ASSIGN:
2803 case EXPR_BINARY_DIV_ASSIGN:
2804 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2805 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2806 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2807 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2808 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2809 return create_assign_binop(expression);
2811 panic("TODO binexpr type");
2815 static ir_node *array_access_addr(const array_access_expression_t *expression)
2817 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2818 ir_node *base_addr = expression_to_firm(expression->array_ref);
2819 ir_node *offset = expression_to_firm(expression->index);
2820 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2821 ir_node *real_offset = adjust_for_pointer_arithmetic(dbgi, offset, ref_type);
2822 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2827 static ir_node *array_access_to_firm(
2828 const array_access_expression_t *expression)
2830 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2831 ir_node *addr = array_access_addr(expression);
2832 type_t *type = revert_automatic_type_conversion(
2833 (const expression_t*) expression);
2834 type = skip_typeref(type);
2836 return deref_address(dbgi, type, addr);
2839 static long get_offsetof_offset(const offsetof_expression_t *expression)
2841 type_t *orig_type = expression->type;
2844 designator_t *designator = expression->designator;
2845 for ( ; designator != NULL; designator = designator->next) {
2846 type_t *type = skip_typeref(orig_type);
2847 /* be sure the type is constructed */
2848 (void) get_ir_type(type);
2850 if (designator->symbol != NULL) {
2851 assert(is_type_compound(type));
2852 symbol_t *symbol = designator->symbol;
2854 compound_t *compound = type->compound.compound;
2855 entity_t *iter = compound->members.entities;
2856 for ( ; iter != NULL; iter = iter->base.next) {
2857 if (iter->base.symbol == symbol) {
2861 assert(iter != NULL);
2863 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
2864 assert(iter->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2865 offset += get_entity_offset(iter->compound_member.entity);
2867 orig_type = iter->declaration.type;
2869 expression_t *array_index = designator->array_index;
2870 assert(designator->array_index != NULL);
2871 assert(is_type_array(type));
2873 long index = fold_constant_to_int(array_index);
2874 ir_type *arr_type = get_ir_type(type);
2875 ir_type *elem_type = get_array_element_type(arr_type);
2876 long elem_size = get_type_size_bytes(elem_type);
2878 offset += index * elem_size;
2880 orig_type = type->array.element_type;
2887 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2889 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2890 long offset = get_offsetof_offset(expression);
2891 tarval *tv = new_tarval_from_long(offset, mode);
2892 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2894 return new_d_Const(dbgi, tv);
2897 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2898 ir_entity *entity, type_t *type);
2900 static ir_node *compound_literal_to_firm(
2901 const compound_literal_expression_t *expression)
2903 type_t *type = expression->type;
2905 /* create an entity on the stack */
2906 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2908 ident *const id = id_unique("CompLit.%u");
2909 ir_type *const irtype = get_ir_type(type);
2910 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2911 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2912 set_entity_ld_ident(entity, id);
2914 /* create initialisation code */
2915 initializer_t *initializer = expression->initializer;
2916 create_local_initializer(initializer, dbgi, entity, type);
2918 /* create a sel for the compound literal address */
2919 ir_node *frame = get_irg_frame(current_ir_graph);
2920 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2925 * Transform a sizeof expression into Firm code.
2927 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2929 type_t *const type = skip_typeref(expression->type);
2930 /* ยง6.5.3.4:2 if the type is a VLA, evaluate the expression. */
2931 if (is_type_array(type) && type->array.is_vla
2932 && expression->tp_expression != NULL) {
2933 expression_to_firm(expression->tp_expression);
2936 return get_type_size_node(type);
2939 static entity_t *get_expression_entity(const expression_t *expression)
2941 if (expression->kind != EXPR_REFERENCE)
2944 return expression->reference.entity;
2947 static unsigned get_cparser_entity_alignment(const entity_t *entity)
2949 switch(entity->kind) {
2950 DECLARATION_KIND_CASES
2951 return entity->declaration.alignment;
2954 return entity->compound.alignment;
2955 case ENTITY_TYPEDEF:
2956 return entity->typedefe.alignment;
2964 * Transform an alignof expression into Firm code.
2966 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2968 unsigned alignment = 0;
2970 const expression_t *tp_expression = expression->tp_expression;
2971 if (tp_expression != NULL) {
2972 entity_t *entity = get_expression_entity(tp_expression);
2973 if (entity != NULL) {
2974 alignment = get_cparser_entity_alignment(entity);
2978 if (alignment == 0) {
2979 type_t *type = expression->type;
2980 alignment = get_type_alignment(type);
2983 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2984 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2985 tarval *tv = new_tarval_from_long(alignment, mode);
2986 return new_d_Const(dbgi, tv);
2989 static void init_ir_types(void);
2991 static tarval *fold_constant_to_tarval(const expression_t *expression)
2993 assert(is_type_valid(skip_typeref(expression->base.type)));
2995 bool constant_folding_old = constant_folding;
2996 constant_folding = true;
3000 assert(is_constant_expression(expression));
3002 ir_graph *old_current_ir_graph = current_ir_graph;
3003 current_ir_graph = get_const_code_irg();
3005 ir_node *cnst = expression_to_firm(expression);
3006 current_ir_graph = old_current_ir_graph;
3008 if (!is_Const(cnst)) {
3009 panic("couldn't fold constant");
3012 constant_folding = constant_folding_old;
3014 tarval *tv = get_Const_tarval(cnst);
3018 long fold_constant_to_int(const expression_t *expression)
3020 if (expression->kind == EXPR_INVALID)
3023 tarval *tv = fold_constant_to_tarval(expression);
3024 if (!tarval_is_long(tv)) {
3025 panic("result of constant folding is not integer");
3028 return get_tarval_long(tv);
3031 bool fold_constant_to_bool(const expression_t *expression)
3033 if (expression->kind == EXPR_INVALID)
3035 tarval *tv = fold_constant_to_tarval(expression);
3036 return !tarval_is_null(tv);
3039 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
3041 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
3043 /* first try to fold a constant condition */
3044 if (is_constant_expression(expression->condition)) {
3045 bool val = fold_constant_to_bool(expression->condition);
3047 expression_t *true_expression = expression->true_expression;
3048 if (true_expression == NULL)
3049 true_expression = expression->condition;
3050 return expression_to_firm(true_expression);
3052 return expression_to_firm(expression->false_expression);
3056 ir_node *cur_block = get_cur_block();
3058 /* create the true block */
3059 ir_node *true_block = new_immBlock();
3060 set_cur_block(true_block);
3062 ir_node *true_val = expression->true_expression != NULL ?
3063 expression_to_firm(expression->true_expression) : NULL;
3064 ir_node *true_jmp = new_Jmp();
3066 /* create the false block */
3067 ir_node *false_block = new_immBlock();
3068 set_cur_block(false_block);
3070 ir_node *false_val = expression_to_firm(expression->false_expression);
3071 ir_node *false_jmp = new_Jmp();
3073 /* create the condition evaluation */
3074 set_cur_block(cur_block);
3075 ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
3076 if (expression->true_expression == NULL) {
3077 if (cond_expr != NULL && get_irn_mode(cond_expr) != mode_b) {
3078 true_val = cond_expr;
3080 /* Condition ended with a short circuit (&&, ||, !) operation or a
3081 * comparison. Generate a "1" as value for the true branch. */
3082 true_val = new_Const(get_mode_one(mode_Is));
3085 mature_immBlock(true_block);
3086 mature_immBlock(false_block);
3088 /* create the common block */
3089 ir_node *in_cf[2] = { true_jmp, false_jmp };
3090 new_Block(2, in_cf);
3092 /* TODO improve static semantics, so either both or no values are NULL */
3093 if (true_val == NULL || false_val == NULL)
3096 ir_node *in[2] = { true_val, false_val };
3097 ir_mode *mode = get_irn_mode(true_val);
3098 assert(get_irn_mode(false_val) == mode);
3099 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
3105 * Returns an IR-node representing the address of a field.
3107 static ir_node *select_addr(const select_expression_t *expression)
3109 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3111 construct_select_compound(expression);
3113 ir_node *compound_addr = expression_to_firm(expression->compound);
3115 entity_t *entry = expression->compound_entry;
3116 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3117 assert(entry->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
3119 if (constant_folding) {
3120 ir_mode *mode = get_irn_mode(compound_addr);
3121 /* FIXME: here, we need an integer mode with the same number of bits as mode */
3122 ir_node *ofs = new_Const_long(mode_uint, entry->compound_member.offset);
3123 return new_d_Add(dbgi, compound_addr, ofs, mode);
3125 ir_entity *irentity = entry->compound_member.entity;
3126 assert(irentity != NULL);
3127 return new_d_simpleSel(dbgi, new_NoMem(), compound_addr, irentity);
3131 static ir_node *select_to_firm(const select_expression_t *expression)
3133 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3134 ir_node *addr = select_addr(expression);
3135 type_t *type = revert_automatic_type_conversion(
3136 (const expression_t*) expression);
3137 type = skip_typeref(type);
3139 entity_t *entry = expression->compound_entry;
3140 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3141 type_t *entry_type = skip_typeref(entry->declaration.type);
3143 if (entry_type->kind == TYPE_BITFIELD) {
3144 return bitfield_extract_to_firm(expression, addr);
3147 return deref_address(dbgi, type, addr);
3150 /* Values returned by __builtin_classify_type. */
3151 typedef enum gcc_type_class
3157 enumeral_type_class,
3160 reference_type_class,
3164 function_type_class,
3175 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
3177 type_t *type = expr->type_expression->base.type;
3179 /* FIXME gcc returns different values depending on whether compiling C or C++
3180 * e.g. int x[10] is pointer_type_class in C, but array_type_class in C++ */
3183 type = skip_typeref(type);
3184 switch (type->kind) {
3186 const atomic_type_t *const atomic_type = &type->atomic;
3187 switch (atomic_type->akind) {
3188 /* should not be reached */
3189 case ATOMIC_TYPE_INVALID:
3193 /* gcc cannot do that */
3194 case ATOMIC_TYPE_VOID:
3195 tc = void_type_class;
3198 case ATOMIC_TYPE_WCHAR_T: /* gcc handles this as integer */
3199 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
3200 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
3201 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
3202 case ATOMIC_TYPE_SHORT:
3203 case ATOMIC_TYPE_USHORT:
3204 case ATOMIC_TYPE_INT:
3205 case ATOMIC_TYPE_UINT:
3206 case ATOMIC_TYPE_LONG:
3207 case ATOMIC_TYPE_ULONG:
3208 case ATOMIC_TYPE_LONGLONG:
3209 case ATOMIC_TYPE_ULONGLONG:
3210 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
3211 tc = integer_type_class;
3214 case ATOMIC_TYPE_FLOAT:
3215 case ATOMIC_TYPE_DOUBLE:
3216 case ATOMIC_TYPE_LONG_DOUBLE:
3217 tc = real_type_class;
3220 panic("Unexpected atomic type in classify_type_to_firm().");
3223 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
3224 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
3225 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
3226 case TYPE_ARRAY: /* gcc handles this as pointer */
3227 case TYPE_FUNCTION: /* gcc handles this as pointer */
3228 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
3229 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
3230 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
3232 /* gcc handles this as integer */
3233 case TYPE_ENUM: tc = integer_type_class; goto make_const;
3235 /* gcc classifies the referenced type */
3236 case TYPE_REFERENCE: type = type->reference.refers_to; continue;
3239 /* typedef/typeof should be skipped already */
3246 panic("unexpected TYPE classify_type_to_firm().");
3250 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3251 tarval *const tv = new_tarval_from_long(tc, mode_int);
3252 return new_d_Const(dbgi, tv);
3255 static ir_node *function_name_to_firm(
3256 const funcname_expression_t *const expr)
3258 switch(expr->kind) {
3259 case FUNCNAME_FUNCTION:
3260 case FUNCNAME_PRETTY_FUNCTION:
3261 case FUNCNAME_FUNCDNAME:
3262 if (current_function_name == NULL) {
3263 const source_position_t *const src_pos = &expr->base.source_position;
3264 const char *name = current_function_entity->base.symbol->string;
3265 const string_t string = { name, strlen(name) + 1 };
3266 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
3268 return current_function_name;
3269 case FUNCNAME_FUNCSIG:
3270 if (current_funcsig == NULL) {
3271 const source_position_t *const src_pos = &expr->base.source_position;
3272 ir_entity *ent = get_irg_entity(current_ir_graph);
3273 const char *const name = get_entity_ld_name(ent);
3274 const string_t string = { name, strlen(name) + 1 };
3275 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
3277 return current_funcsig;
3279 panic("Unsupported function name");
3282 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
3284 statement_t *statement = expr->statement;
3286 assert(statement->kind == STATEMENT_COMPOUND);
3287 return compound_statement_to_firm(&statement->compound);
3290 static ir_node *va_start_expression_to_firm(
3291 const va_start_expression_t *const expr)
3293 type_t *const type = current_function_entity->declaration.type;
3294 ir_type *const method_type = get_ir_type(type);
3295 int const n = get_method_n_params(method_type) - 1;
3296 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
3297 ir_node *const frame = get_irg_frame(current_ir_graph);
3298 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3299 ir_node *const no_mem = new_NoMem();
3300 ir_node *const arg_sel =
3301 new_d_simpleSel(dbgi, no_mem, frame, parm_ent);
3303 type_t *const param_type = expr->parameter->base.type;
3304 ir_node *const cnst = get_type_size_node(param_type);
3305 ir_mode *const mode = get_irn_mode(cnst);
3306 ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
3307 ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
3308 ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align);
3309 ir_node *const c4 = new_d_And(dbgi, c2, c3, mode);
3310 ir_node *const add = new_d_Add(dbgi, arg_sel, c4, mode_P_data);
3311 set_value_for_expression(expr->ap, add);
3316 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
3318 type_t *const type = expr->base.type;
3319 expression_t *const ap_expr = expr->ap;
3320 ir_node *const ap_addr = expression_to_addr(ap_expr);
3321 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
3322 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3323 ir_node *const res = deref_address(dbgi, type, ap);
3325 ir_node *const cnst = get_type_size_node(expr->base.type);
3326 ir_mode *const mode = get_irn_mode(cnst);
3327 ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
3328 ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
3329 ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align);
3330 ir_node *const c4 = new_d_And(dbgi, c2, c3, mode);
3331 ir_node *const add = new_d_Add(dbgi, ap, c4, mode_P_data);
3333 set_value_for_expression_addr(ap_expr, add, ap_addr);
3339 * Generate Firm for a va_copy expression.
3341 static ir_node *va_copy_expression_to_firm(const va_copy_expression_t *const expr)
3343 ir_node *const src = expression_to_firm(expr->src);
3344 set_value_for_expression(expr->dst, src);
3348 static ir_node *dereference_addr(const unary_expression_t *const expression)
3350 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
3351 return expression_to_firm(expression->value);
3355 * Returns a IR-node representing an lvalue of the given expression.
3357 static ir_node *expression_to_addr(const expression_t *expression)
3359 switch(expression->kind) {
3360 case EXPR_ARRAY_ACCESS:
3361 return array_access_addr(&expression->array_access);
3363 return call_expression_to_firm(&expression->call);
3364 case EXPR_COMPOUND_LITERAL:
3365 return compound_literal_to_firm(&expression->compound_literal);
3366 case EXPR_REFERENCE:
3367 return reference_addr(&expression->reference);
3369 return select_addr(&expression->select);
3370 case EXPR_UNARY_DEREFERENCE:
3371 return dereference_addr(&expression->unary);
3375 panic("trying to get address of non-lvalue");
3378 static ir_node *builtin_constant_to_firm(
3379 const builtin_constant_expression_t *expression)
3381 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3384 if (is_constant_expression(expression->value)) {
3389 return new_Const_long(mode, v);
3392 static ir_node *builtin_types_compatible_to_firm(
3393 const builtin_types_compatible_expression_t *expression)
3395 type_t *const left = get_unqualified_type(skip_typeref(expression->left));
3396 type_t *const right = get_unqualified_type(skip_typeref(expression->right));
3397 long const value = types_compatible(left, right) ? 1 : 0;
3398 ir_mode *const mode = get_ir_mode_arithmetic(expression->base.type);
3399 return new_Const_long(mode, value);
3402 static ir_node *get_label_block(label_t *label)
3404 if (label->block != NULL)
3405 return label->block;
3407 /* beware: might be called from create initializer with current_ir_graph
3408 * set to const_code_irg. */
3409 ir_graph *rem = current_ir_graph;
3410 current_ir_graph = current_function;
3412 ir_node *block = new_immBlock();
3414 label->block = block;
3416 ARR_APP1(label_t *, all_labels, label);
3418 current_ir_graph = rem;
3423 * Pointer to a label. This is used for the
3424 * GNU address-of-label extension.
3426 static ir_node *label_address_to_firm(const label_address_expression_t *label)
3428 dbg_info *dbgi = get_dbg_info(&label->base.source_position);
3429 ir_node *block = get_label_block(label->label);
3430 ir_entity *entity = create_Block_entity(block);
3432 symconst_symbol value;
3433 value.entity_p = entity;
3434 return new_d_SymConst(dbgi, mode_P_code, value, symconst_addr_ent);
3438 * creates firm nodes for an expression. The difference between this function
3439 * and expression_to_firm is, that this version might produce mode_b nodes
3440 * instead of mode_Is.
3442 static ir_node *_expression_to_firm(const expression_t *expression)
3445 if (!constant_folding) {
3446 assert(!expression->base.transformed);
3447 ((expression_t*) expression)->base.transformed = true;
3451 switch (expression->kind) {
3452 case EXPR_CHARACTER_CONSTANT:
3453 return character_constant_to_firm(&expression->conste);
3454 case EXPR_WIDE_CHARACTER_CONSTANT:
3455 return wide_character_constant_to_firm(&expression->conste);
3457 return const_to_firm(&expression->conste);
3458 case EXPR_STRING_LITERAL:
3459 return string_literal_to_firm(&expression->string);
3460 case EXPR_WIDE_STRING_LITERAL:
3461 return wide_string_literal_to_firm(&expression->wide_string);
3462 case EXPR_REFERENCE:
3463 return reference_expression_to_firm(&expression->reference);
3464 case EXPR_REFERENCE_ENUM_VALUE:
3465 return reference_expression_enum_value_to_firm(&expression->reference);
3467 return call_expression_to_firm(&expression->call);
3469 return unary_expression_to_firm(&expression->unary);
3471 return binary_expression_to_firm(&expression->binary);
3472 case EXPR_ARRAY_ACCESS:
3473 return array_access_to_firm(&expression->array_access);
3475 return sizeof_to_firm(&expression->typeprop);
3477 return alignof_to_firm(&expression->typeprop);
3478 case EXPR_CONDITIONAL:
3479 return conditional_to_firm(&expression->conditional);
3481 return select_to_firm(&expression->select);
3482 case EXPR_CLASSIFY_TYPE:
3483 return classify_type_to_firm(&expression->classify_type);
3485 return function_name_to_firm(&expression->funcname);
3486 case EXPR_STATEMENT:
3487 return statement_expression_to_firm(&expression->statement);
3489 return va_start_expression_to_firm(&expression->va_starte);
3491 return va_arg_expression_to_firm(&expression->va_arge);
3493 return va_copy_expression_to_firm(&expression->va_copye);
3494 case EXPR_BUILTIN_CONSTANT_P:
3495 return builtin_constant_to_firm(&expression->builtin_constant);
3496 case EXPR_BUILTIN_TYPES_COMPATIBLE_P:
3497 return builtin_types_compatible_to_firm(&expression->builtin_types_compatible);
3499 return offsetof_to_firm(&expression->offsetofe);
3500 case EXPR_COMPOUND_LITERAL:
3501 return compound_literal_to_firm(&expression->compound_literal);
3502 case EXPR_LABEL_ADDRESS:
3503 return label_address_to_firm(&expression->label_address);
3509 panic("invalid expression found");
3513 * Check if a given expression is a GNU __builtin_expect() call.
3515 static bool is_builtin_expect(const expression_t *expression)
3517 if (expression->kind != EXPR_CALL)
3520 expression_t *function = expression->call.function;
3521 if (function->kind != EXPR_REFERENCE)
3523 reference_expression_t *ref = &function->reference;
3524 if (ref->entity->kind != ENTITY_FUNCTION ||
3525 ref->entity->function.btk != bk_gnu_builtin_expect)
3531 static bool produces_mode_b(const expression_t *expression)
3533 switch (expression->kind) {
3534 case EXPR_BINARY_EQUAL:
3535 case EXPR_BINARY_NOTEQUAL:
3536 case EXPR_BINARY_LESS:
3537 case EXPR_BINARY_LESSEQUAL:
3538 case EXPR_BINARY_GREATER:
3539 case EXPR_BINARY_GREATEREQUAL:
3540 case EXPR_BINARY_ISGREATER:
3541 case EXPR_BINARY_ISGREATEREQUAL:
3542 case EXPR_BINARY_ISLESS:
3543 case EXPR_BINARY_ISLESSEQUAL:
3544 case EXPR_BINARY_ISLESSGREATER:
3545 case EXPR_BINARY_ISUNORDERED:
3546 case EXPR_UNARY_NOT:
3550 if (is_builtin_expect(expression)) {
3551 expression_t *argument = expression->call.arguments->expression;
3552 return produces_mode_b(argument);
3555 case EXPR_BINARY_COMMA:
3556 return produces_mode_b(expression->binary.right);
3563 static ir_node *expression_to_firm(const expression_t *expression)
3565 if (!produces_mode_b(expression)) {
3566 ir_node *res = _expression_to_firm(expression);
3567 assert(res == NULL || get_irn_mode(res) != mode_b);
3571 if (is_constant_expression(expression)) {
3572 ir_node *res = _expression_to_firm(expression);
3573 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3574 assert(is_Const(res));
3575 if (is_Const_null(res)) {
3576 return new_Const_long(mode, 0);
3578 return new_Const_long(mode, 1);
3582 /* we have to produce a 0/1 from the mode_b expression */
3583 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3584 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3585 return produce_condition_result(expression, mode, dbgi);
3589 * create a short-circuit expression evaluation that tries to construct
3590 * efficient control flow structures for &&, || and ! expressions
3592 static ir_node *create_condition_evaluation(const expression_t *expression,
3593 ir_node *true_block,
3594 ir_node *false_block)
3596 switch(expression->kind) {
3597 case EXPR_UNARY_NOT: {
3598 const unary_expression_t *unary_expression = &expression->unary;
3599 create_condition_evaluation(unary_expression->value, false_block,
3603 case EXPR_BINARY_LOGICAL_AND: {
3604 const binary_expression_t *binary_expression = &expression->binary;
3606 ir_node *extra_block = new_immBlock();
3607 create_condition_evaluation(binary_expression->left, extra_block,
3609 mature_immBlock(extra_block);
3610 set_cur_block(extra_block);
3611 create_condition_evaluation(binary_expression->right, true_block,
3615 case EXPR_BINARY_LOGICAL_OR: {
3616 const binary_expression_t *binary_expression = &expression->binary;
3618 ir_node *extra_block = new_immBlock();
3619 create_condition_evaluation(binary_expression->left, true_block,
3621 mature_immBlock(extra_block);
3622 set_cur_block(extra_block);
3623 create_condition_evaluation(binary_expression->right, true_block,
3631 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3632 ir_node *cond_expr = _expression_to_firm(expression);
3633 ir_node *condition = create_conv(dbgi, cond_expr, mode_b);
3634 ir_node *cond = new_d_Cond(dbgi, condition);
3635 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3636 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3638 /* set branch prediction info based on __builtin_expect */
3639 if (is_builtin_expect(expression) && is_Cond(cond)) {
3640 call_argument_t *argument = expression->call.arguments->next;
3641 if (is_constant_expression(argument->expression)) {
3642 bool cnst = fold_constant_to_bool(argument->expression);
3643 cond_jmp_predicate pred;
3645 if (cnst == false) {
3646 pred = COND_JMP_PRED_FALSE;
3648 pred = COND_JMP_PRED_TRUE;
3650 set_Cond_jmp_pred(cond, pred);
3654 add_immBlock_pred(true_block, true_proj);
3655 add_immBlock_pred(false_block, false_proj);
3657 set_cur_block(NULL);
3661 static void create_variable_entity(entity_t *variable,
3662 declaration_kind_t declaration_kind,
3663 ir_type *parent_type)
3665 assert(variable->kind == ENTITY_VARIABLE);
3666 type_t *type = skip_typeref(variable->declaration.type);
3668 ident *const id = new_id_from_str(variable->base.symbol->string);
3669 ir_type *const irtype = get_ir_type(type);
3670 dbg_info *const dbgi = get_dbg_info(&variable->base.source_position);
3671 ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi);
3672 unsigned alignment = variable->declaration.alignment;
3674 set_entity_alignment(irentity, alignment);
3676 handle_decl_modifiers(irentity, variable);
3678 variable->declaration.kind = (unsigned char) declaration_kind;
3679 variable->variable.v.entity = irentity;
3680 set_entity_ld_ident(irentity, create_ld_ident(variable));
3682 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3683 set_entity_volatility(irentity, volatility_is_volatile);
3688 typedef struct type_path_entry_t type_path_entry_t;
3689 struct type_path_entry_t {
3691 ir_initializer_t *initializer;
3693 entity_t *compound_entry;
3696 typedef struct type_path_t type_path_t;
3697 struct type_path_t {
3698 type_path_entry_t *path;
3703 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3705 size_t len = ARR_LEN(path->path);
3707 for (size_t i = 0; i < len; ++i) {
3708 const type_path_entry_t *entry = & path->path[i];
3710 type_t *type = skip_typeref(entry->type);
3711 if (is_type_compound(type)) {
3712 fprintf(stderr, ".%s", entry->compound_entry->base.symbol->string);
3713 } else if (is_type_array(type)) {
3714 fprintf(stderr, "[%u]", (unsigned) entry->index);
3716 fprintf(stderr, "-INVALID-");
3719 fprintf(stderr, " (");
3720 print_type(path->top_type);
3721 fprintf(stderr, ")");
3724 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3726 size_t len = ARR_LEN(path->path);
3728 return & path->path[len-1];
3731 static type_path_entry_t *append_to_type_path(type_path_t *path)
3733 size_t len = ARR_LEN(path->path);
3734 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3736 type_path_entry_t *result = & path->path[len];
3737 memset(result, 0, sizeof(result[0]));
3741 static size_t get_compound_member_count(const compound_type_t *type)
3743 compound_t *compound = type->compound;
3744 size_t n_members = 0;
3745 entity_t *member = compound->members.entities;
3746 for ( ; member != NULL; member = member->base.next) {
3753 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3755 type_t *orig_top_type = path->top_type;
3756 type_t *top_type = skip_typeref(orig_top_type);
3758 assert(is_type_compound(top_type) || is_type_array(top_type));
3760 if (ARR_LEN(path->path) == 0) {
3763 type_path_entry_t *top = get_type_path_top(path);
3764 ir_initializer_t *initializer = top->initializer;
3765 return get_initializer_compound_value(initializer, top->index);
3769 static void descend_into_subtype(type_path_t *path)
3771 type_t *orig_top_type = path->top_type;
3772 type_t *top_type = skip_typeref(orig_top_type);
3774 assert(is_type_compound(top_type) || is_type_array(top_type));
3776 ir_initializer_t *initializer = get_initializer_entry(path);
3778 type_path_entry_t *top = append_to_type_path(path);
3779 top->type = top_type;
3783 if (is_type_compound(top_type)) {
3784 compound_t *compound = top_type->compound.compound;
3785 entity_t *entry = compound->members.entities;
3787 top->compound_entry = entry;
3789 len = get_compound_member_count(&top_type->compound);
3790 if (entry != NULL) {
3791 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3792 path->top_type = entry->declaration.type;
3795 assert(is_type_array(top_type));
3796 assert(top_type->array.size > 0);
3799 path->top_type = top_type->array.element_type;
3800 len = top_type->array.size;
3802 if (initializer == NULL
3803 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3804 initializer = create_initializer_compound(len);
3805 /* we have to set the entry at the 2nd latest path entry... */
3806 size_t path_len = ARR_LEN(path->path);
3807 assert(path_len >= 1);
3809 type_path_entry_t *entry = & path->path[path_len-2];
3810 ir_initializer_t *tinitializer = entry->initializer;
3811 set_initializer_compound_value(tinitializer, entry->index,
3815 top->initializer = initializer;
3818 static void ascend_from_subtype(type_path_t *path)
3820 type_path_entry_t *top = get_type_path_top(path);
3822 path->top_type = top->type;
3824 size_t len = ARR_LEN(path->path);
3825 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3828 static void walk_designator(type_path_t *path, const designator_t *designator)
3830 /* designators start at current object type */
3831 ARR_RESIZE(type_path_entry_t, path->path, 1);
3833 for ( ; designator != NULL; designator = designator->next) {
3834 type_path_entry_t *top = get_type_path_top(path);
3835 type_t *orig_type = top->type;
3836 type_t *type = skip_typeref(orig_type);
3838 if (designator->symbol != NULL) {
3839 assert(is_type_compound(type));
3841 symbol_t *symbol = designator->symbol;
3843 compound_t *compound = type->compound.compound;
3844 entity_t *iter = compound->members.entities;
3845 for ( ; iter != NULL; iter = iter->base.next, ++index) {
3846 if (iter->base.symbol == symbol) {
3847 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
3851 assert(iter != NULL);
3853 /* revert previous initialisations of other union elements */
3854 if (type->kind == TYPE_COMPOUND_UNION) {
3855 ir_initializer_t *initializer = top->initializer;
3856 if (initializer != NULL
3857 && get_initializer_kind(initializer) == IR_INITIALIZER_COMPOUND) {
3858 /* are we writing to a new element? */
3859 ir_initializer_t *oldi
3860 = get_initializer_compound_value(initializer, index);
3861 if (get_initializer_kind(oldi) == IR_INITIALIZER_NULL) {
3862 /* clear initializer */
3864 = get_initializer_compound_n_entries(initializer);
3865 ir_initializer_t *nulli = get_initializer_null();
3866 for (size_t i = 0; i < len; ++i) {
3867 set_initializer_compound_value(initializer, i,
3874 top->type = orig_type;
3875 top->compound_entry = iter;
3877 orig_type = iter->declaration.type;
3879 expression_t *array_index = designator->array_index;
3880 assert(designator->array_index != NULL);
3881 assert(is_type_array(type));
3883 long index = fold_constant_to_int(array_index);
3886 if (type->array.size_constant) {
3887 long array_size = type->array.size;
3888 assert(index < array_size);
3892 top->type = orig_type;
3893 top->index = (size_t) index;
3894 orig_type = type->array.element_type;
3896 path->top_type = orig_type;
3898 if (designator->next != NULL) {
3899 descend_into_subtype(path);
3903 path->invalid = false;
3906 static void advance_current_object(type_path_t *path)
3908 if (path->invalid) {
3909 /* TODO: handle this... */
3910 panic("invalid initializer in ast2firm (excessive elements)");
3913 type_path_entry_t *top = get_type_path_top(path);
3915 type_t *type = skip_typeref(top->type);
3916 if (is_type_union(type)) {
3917 /* only the first element is initialized in unions */
3918 top->compound_entry = NULL;
3919 } else if (is_type_struct(type)) {
3920 entity_t *entry = top->compound_entry;
3923 entry = entry->base.next;
3924 top->compound_entry = entry;
3925 if (entry != NULL) {
3926 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3927 path->top_type = entry->declaration.type;
3931 assert(is_type_array(type));
3934 if (!type->array.size_constant || top->index < type->array.size) {
3939 /* we're past the last member of the current sub-aggregate, try if we
3940 * can ascend in the type hierarchy and continue with another subobject */
3941 size_t len = ARR_LEN(path->path);
3944 ascend_from_subtype(path);
3945 advance_current_object(path);
3947 path->invalid = true;
3952 static ir_initializer_t *create_ir_initializer(
3953 const initializer_t *initializer, type_t *type);
3955 static ir_initializer_t *create_ir_initializer_value(
3956 const initializer_value_t *initializer)
3958 if (is_type_compound(initializer->value->base.type)) {
3959 panic("initializer creation for compounds not implemented yet");
3961 type_t *type = initializer->value->base.type;
3962 expression_t *expr = initializer->value;
3963 if (initializer_use_bitfield_basetype) {
3964 type_t *skipped = skip_typeref(type);
3965 if (skipped->kind == TYPE_BITFIELD) {
3966 /* remove the bitfield cast... */
3967 assert(expr->kind == EXPR_UNARY_CAST_IMPLICIT);
3968 expr = expr->unary.value;
3969 type = skipped->bitfield.base_type;
3972 ir_node *value = expression_to_firm(expr);
3973 ir_mode *mode = get_ir_mode_storage(type);
3974 value = create_conv(NULL, value, mode);
3975 return create_initializer_const(value);
3978 /** test wether type can be initialized by a string constant */
3979 static bool is_string_type(type_t *type)
3982 if (is_type_pointer(type)) {
3983 inner = skip_typeref(type->pointer.points_to);
3984 } else if(is_type_array(type)) {
3985 inner = skip_typeref(type->array.element_type);
3990 return is_type_integer(inner);
3993 static ir_initializer_t *create_ir_initializer_list(
3994 const initializer_list_t *initializer, type_t *type)
3997 memset(&path, 0, sizeof(path));
3998 path.top_type = type;
3999 path.path = NEW_ARR_F(type_path_entry_t, 0);
4001 descend_into_subtype(&path);
4003 for (size_t i = 0; i < initializer->len; ++i) {
4004 const initializer_t *sub_initializer = initializer->initializers[i];
4006 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
4007 walk_designator(&path, sub_initializer->designator.designator);
4011 if (sub_initializer->kind == INITIALIZER_VALUE) {
4012 /* we might have to descend into types until we're at a scalar
4015 type_t *orig_top_type = path.top_type;
4016 type_t *top_type = skip_typeref(orig_top_type);
4018 if (is_type_scalar(top_type))
4020 descend_into_subtype(&path);
4022 } else if (sub_initializer->kind == INITIALIZER_STRING
4023 || sub_initializer->kind == INITIALIZER_WIDE_STRING) {
4024 /* we might have to descend into types until we're at a scalar
4027 type_t *orig_top_type = path.top_type;
4028 type_t *top_type = skip_typeref(orig_top_type);
4030 if (is_string_type(top_type))
4032 descend_into_subtype(&path);
4036 ir_initializer_t *sub_irinitializer
4037 = create_ir_initializer(sub_initializer, path.top_type);
4039 size_t path_len = ARR_LEN(path.path);
4040 assert(path_len >= 1);
4041 type_path_entry_t *entry = & path.path[path_len-1];
4042 ir_initializer_t *tinitializer = entry->initializer;
4043 set_initializer_compound_value(tinitializer, entry->index,
4046 advance_current_object(&path);
4049 assert(ARR_LEN(path.path) >= 1);
4050 ir_initializer_t *result = path.path[0].initializer;
4051 DEL_ARR_F(path.path);
4056 static ir_initializer_t *create_ir_initializer_string(
4057 const initializer_string_t *initializer, type_t *type)
4059 type = skip_typeref(type);
4061 size_t string_len = initializer->string.size;
4062 assert(type->kind == TYPE_ARRAY);
4063 assert(type->array.size_constant);
4064 size_t len = type->array.size;
4065 ir_initializer_t *irinitializer = create_initializer_compound(len);
4067 const char *string = initializer->string.begin;
4068 ir_mode *mode = get_ir_mode_storage(type->array.element_type);
4070 for (size_t i = 0; i < len; ++i) {
4075 tarval *tv = new_tarval_from_long(c, mode);
4076 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
4078 set_initializer_compound_value(irinitializer, i, char_initializer);
4081 return irinitializer;
4084 static ir_initializer_t *create_ir_initializer_wide_string(
4085 const initializer_wide_string_t *initializer, type_t *type)
4087 size_t string_len = initializer->string.size;
4088 assert(type->kind == TYPE_ARRAY);
4089 assert(type->array.size_constant);
4090 size_t len = type->array.size;
4091 ir_initializer_t *irinitializer = create_initializer_compound(len);
4093 const wchar_rep_t *string = initializer->string.begin;
4094 ir_mode *mode = get_type_mode(ir_type_wchar_t);
4096 for (size_t i = 0; i < len; ++i) {
4098 if (i < string_len) {
4101 tarval *tv = new_tarval_from_long(c, mode);
4102 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
4104 set_initializer_compound_value(irinitializer, i, char_initializer);
4107 return irinitializer;
4110 static ir_initializer_t *create_ir_initializer(
4111 const initializer_t *initializer, type_t *type)
4113 switch(initializer->kind) {
4114 case INITIALIZER_STRING:
4115 return create_ir_initializer_string(&initializer->string, type);
4117 case INITIALIZER_WIDE_STRING:
4118 return create_ir_initializer_wide_string(&initializer->wide_string,
4121 case INITIALIZER_LIST:
4122 return create_ir_initializer_list(&initializer->list, type);
4124 case INITIALIZER_VALUE:
4125 return create_ir_initializer_value(&initializer->value);
4127 case INITIALIZER_DESIGNATOR:
4128 panic("unexpected designator initializer found");
4130 panic("unknown initializer");
4133 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
4134 ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr)
4136 switch(get_initializer_kind(initializer)) {
4137 case IR_INITIALIZER_NULL: {
4138 /* NULL is undefined for dynamic initializers */
4141 case IR_INITIALIZER_CONST: {
4142 ir_node *node = get_initializer_const_value(initializer);
4143 ir_mode *mode = get_irn_mode(node);
4144 ir_type *ent_type = get_entity_type(entity);
4146 /* is it a bitfield type? */
4147 if (is_Primitive_type(ent_type) &&
4148 get_primitive_base_type(ent_type) != NULL) {
4149 bitfield_store_to_firm(dbgi, entity, base_addr, node, false);
4153 assert(get_type_mode(type) == mode);
4154 ir_node *mem = get_store();
4155 ir_node *store = new_d_Store(dbgi, mem, base_addr, node, cons_none);
4156 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4160 case IR_INITIALIZER_TARVAL: {
4161 tarval *tv = get_initializer_tarval_value(initializer);
4162 ir_mode *mode = get_tarval_mode(tv);
4163 ir_node *cnst = new_d_Const(dbgi, tv);
4164 ir_type *ent_type = get_entity_type(entity);
4166 /* is it a bitfield type? */
4167 if (is_Primitive_type(ent_type) &&
4168 get_primitive_base_type(ent_type) != NULL) {
4169 bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false);
4173 assert(get_type_mode(type) == mode);
4174 ir_node *mem = get_store();
4175 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst, cons_none);
4176 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4180 case IR_INITIALIZER_COMPOUND: {
4181 assert(is_compound_type(type));
4183 if (is_Array_type(type)) {
4184 assert(has_array_upper_bound(type, 0));
4185 n_members = get_array_upper_bound_int(type, 0);
4187 n_members = get_compound_n_members(type);
4190 if (get_initializer_compound_n_entries(initializer)
4191 != (unsigned) n_members)
4192 panic("initializer doesn't match compound type");
4194 for (int i = 0; i < n_members; ++i) {
4197 ir_entity *sub_entity;
4198 if (is_Array_type(type)) {
4199 tarval *index_tv = new_tarval_from_long(i, mode_uint);
4200 ir_node *cnst = new_d_Const(dbgi, index_tv);
4201 ir_node *in[1] = { cnst };
4202 irtype = get_array_element_type(type);
4203 sub_entity = get_array_element_entity(type);
4204 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
4207 sub_entity = get_compound_member(type, i);
4208 irtype = get_entity_type(sub_entity);
4209 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
4213 ir_initializer_t *sub_init
4214 = get_initializer_compound_value(initializer, i);
4216 create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
4223 panic("invalid IR_INITIALIZER found");
4226 static void create_dynamic_initializer(ir_initializer_t *initializer,
4227 dbg_info *dbgi, ir_entity *entity)
4229 ir_node *frame = get_irg_frame(current_ir_graph);
4230 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
4231 ir_type *type = get_entity_type(entity);
4233 create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
4236 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
4237 ir_entity *entity, type_t *type)
4239 ir_node *memory = get_store();
4240 ir_node *nomem = new_NoMem();
4241 ir_node *frame = get_irg_frame(current_ir_graph);
4242 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
4244 if (initializer->kind == INITIALIZER_VALUE) {
4245 initializer_value_t *initializer_value = &initializer->value;
4247 ir_node *value = expression_to_firm(initializer_value->value);
4248 type = skip_typeref(type);
4249 assign_value(dbgi, addr, type, value);
4253 if (!is_constant_initializer(initializer)) {
4254 bool old_initializer_use_bitfield_basetype
4255 = initializer_use_bitfield_basetype;
4256 initializer_use_bitfield_basetype = true;
4257 ir_initializer_t *irinitializer
4258 = create_ir_initializer(initializer, type);
4259 initializer_use_bitfield_basetype
4260 = old_initializer_use_bitfield_basetype;
4262 create_dynamic_initializer(irinitializer, dbgi, entity);
4266 /* create the ir_initializer */
4267 ir_graph *const old_current_ir_graph = current_ir_graph;
4268 current_ir_graph = get_const_code_irg();
4270 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
4272 assert(current_ir_graph == get_const_code_irg());
4273 current_ir_graph = old_current_ir_graph;
4275 /* create a "template" entity which is copied to the entity on the stack */
4276 ident *const id = id_unique("initializer.%u");
4277 ir_type *const irtype = get_ir_type(type);
4278 ir_type *const global_type = get_glob_type();
4279 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
4280 set_entity_ld_ident(init_entity, id);
4282 set_entity_visibility(init_entity, ir_visibility_local);
4283 add_entity_linkage(init_entity, IR_LINKAGE_CONSTANT);
4285 set_entity_initializer(init_entity, irinitializer);
4287 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
4288 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
4290 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
4291 set_store(copyb_mem);
4294 static void create_initializer_local_variable_entity(entity_t *entity)
4296 assert(entity->kind == ENTITY_VARIABLE);
4297 initializer_t *initializer = entity->variable.initializer;
4298 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4299 ir_entity *irentity = entity->variable.v.entity;
4300 type_t *type = entity->declaration.type;
4302 create_local_initializer(initializer, dbgi, irentity, type);
4305 static void create_variable_initializer(entity_t *entity)
4307 assert(entity->kind == ENTITY_VARIABLE);
4308 initializer_t *initializer = entity->variable.initializer;
4309 if (initializer == NULL)
4312 declaration_kind_t declaration_kind
4313 = (declaration_kind_t) entity->declaration.kind;
4314 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
4315 create_initializer_local_variable_entity(entity);
4319 type_t *type = entity->declaration.type;
4320 type_qualifiers_t tq = get_type_qualifier(type, true);
4322 if (initializer->kind == INITIALIZER_VALUE) {
4323 initializer_value_t *initializer_value = &initializer->value;
4324 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4326 ir_node *value = expression_to_firm(initializer_value->value);
4328 type_t *type = initializer_value->value->base.type;
4329 ir_mode *mode = get_ir_mode_storage(type);
4330 value = create_conv(dbgi, value, mode);
4331 value = do_strict_conv(dbgi, value);
4333 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
4334 set_value(entity->variable.v.value_number, value);
4336 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4338 ir_entity *irentity = entity->variable.v.entity;
4340 if (tq & TYPE_QUALIFIER_CONST
4341 && get_entity_owner(irentity) != get_tls_type()) {
4342 add_entity_linkage(irentity, IR_LINKAGE_CONSTANT);
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 add_entity_linkage(irentity, IR_LINKAGE_CONSTANT);
4357 set_entity_initializer(irentity, irinitializer);
4361 static void create_variable_length_array(entity_t *entity)
4363 assert(entity->kind == ENTITY_VARIABLE);
4364 assert(entity->variable.initializer == NULL);
4366 entity->declaration.kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
4367 entity->variable.v.vla_base = NULL;
4369 /* TODO: record VLA somewhere so we create the free node when we leave
4373 static void allocate_variable_length_array(entity_t *entity)
4375 assert(entity->kind == ENTITY_VARIABLE);
4376 assert(entity->variable.initializer == NULL);
4377 assert(get_cur_block() != NULL);
4379 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4380 type_t *type = entity->declaration.type;
4381 ir_type *el_type = get_ir_type(type->array.element_type);
4383 /* make sure size_node is calculated */
4384 get_type_size_node(type);
4385 ir_node *elems = type->array.size_node;
4386 ir_node *mem = get_store();
4387 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
4389 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
4390 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
4393 assert(entity->declaration.kind == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
4394 entity->variable.v.vla_base = addr;
4398 * Creates a Firm local variable from a declaration.
4400 static void create_local_variable(entity_t *entity)
4402 assert(entity->kind == ENTITY_VARIABLE);
4403 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4405 bool needs_entity = entity->variable.address_taken;
4406 type_t *type = skip_typeref(entity->declaration.type);
4408 /* is it a variable length array? */
4409 if (is_type_array(type) && !type->array.size_constant) {
4410 create_variable_length_array(entity);
4412 } else if (is_type_array(type) || is_type_compound(type)) {
4413 needs_entity = true;
4414 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4415 needs_entity = true;
4419 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
4420 create_variable_entity(entity,
4421 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
4424 entity->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
4425 entity->variable.v.value_number = next_value_number_function;
4426 set_irg_loc_description(current_ir_graph, next_value_number_function,
4428 ++next_value_number_function;
4432 static void create_local_static_variable(entity_t *entity)
4434 assert(entity->kind == ENTITY_VARIABLE);
4435 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4437 type_t *type = skip_typeref(entity->declaration.type);
4438 ir_type *const var_type = entity->variable.thread_local ?
4439 get_tls_type() : get_glob_type();
4440 ir_type *const irtype = get_ir_type(type);
4441 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
4443 size_t l = strlen(entity->base.symbol->string);
4444 char buf[l + sizeof(".%u")];
4445 snprintf(buf, sizeof(buf), "%s.%%u", entity->base.symbol->string);
4446 ident *const id = id_unique(buf);
4447 ir_entity *const irentity = new_d_entity(var_type, id, irtype, dbgi);
4449 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4450 set_entity_volatility(irentity, volatility_is_volatile);
4453 entity->declaration.kind = DECLARATION_KIND_GLOBAL_VARIABLE;
4454 entity->variable.v.entity = irentity;
4456 set_entity_ld_ident(irentity, id);
4457 set_entity_visibility(irentity, ir_visibility_local);
4459 ir_graph *const old_current_ir_graph = current_ir_graph;
4460 current_ir_graph = get_const_code_irg();
4462 create_variable_initializer(entity);
4464 assert(current_ir_graph == get_const_code_irg());
4465 current_ir_graph = old_current_ir_graph;
4470 static void return_statement_to_firm(return_statement_t *statement)
4472 if (get_cur_block() == NULL)
4475 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4476 type_t *type = current_function_entity->declaration.type;
4477 ir_type *func_irtype = get_ir_type(type);
4482 if (get_method_n_ress(func_irtype) > 0) {
4483 ir_type *res_type = get_method_res_type(func_irtype, 0);
4485 if (statement->value != NULL) {
4486 ir_node *node = expression_to_firm(statement->value);
4487 if (!is_compound_type(res_type)) {
4488 type_t *type = statement->value->base.type;
4489 ir_mode *mode = get_ir_mode_storage(type);
4490 node = create_conv(dbgi, node, mode);
4491 node = do_strict_conv(dbgi, node);
4496 if (is_compound_type(res_type)) {
4499 mode = get_type_mode(res_type);
4501 in[0] = new_Unknown(mode);
4505 /* build return_value for its side effects */
4506 if (statement->value != NULL) {
4507 expression_to_firm(statement->value);
4512 ir_node *store = get_store();
4513 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
4515 ir_node *end_block = get_irg_end_block(current_ir_graph);
4516 add_immBlock_pred(end_block, ret);
4518 set_cur_block(NULL);
4521 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
4523 if (get_cur_block() == NULL)
4526 return expression_to_firm(statement->expression);
4529 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
4531 entity_t *entity = compound->scope.entities;
4532 for ( ; entity != NULL; entity = entity->base.next) {
4533 if (!is_declaration(entity))
4536 create_local_declaration(entity);
4539 ir_node *result = NULL;
4540 statement_t *statement = compound->statements;
4541 for ( ; statement != NULL; statement = statement->base.next) {
4542 if (statement->base.next == NULL
4543 && statement->kind == STATEMENT_EXPRESSION) {
4544 result = expression_statement_to_firm(
4545 &statement->expression);
4548 statement_to_firm(statement);
4554 static void create_global_variable(entity_t *entity)
4556 ir_linkage linkage = 0;
4557 ir_visibility visibility = ir_visibility_default;
4558 ir_entity *irentity;
4559 assert(entity->kind == ENTITY_VARIABLE);
4561 switch ((storage_class_tag_t)entity->declaration.storage_class) {
4562 case STORAGE_CLASS_EXTERN: visibility = ir_visibility_external; break;
4563 case STORAGE_CLASS_STATIC: visibility = ir_visibility_local; break;
4564 case STORAGE_CLASS_NONE:
4565 visibility = ir_visibility_default;
4566 /* uninitialized globals get merged in C */
4567 if (entity->variable.initializer == NULL)
4568 linkage |= IR_LINKAGE_MERGE;
4570 case STORAGE_CLASS_TYPEDEF:
4571 case STORAGE_CLASS_AUTO:
4572 case STORAGE_CLASS_REGISTER:
4573 panic("invalid storage class for global var");
4576 ir_type *var_type = get_glob_type();
4577 if (entity->variable.thread_local) {
4578 var_type = get_tls_type();
4579 /* LINKAGE_MERGE not supported by current linkers */
4580 linkage &= ~IR_LINKAGE_MERGE;
4582 create_variable_entity(entity, DECLARATION_KIND_GLOBAL_VARIABLE, var_type);
4583 irentity = entity->variable.v.entity;
4584 add_entity_linkage(irentity, linkage);
4585 set_entity_visibility(irentity, visibility);
4588 static void create_local_declaration(entity_t *entity)
4590 assert(is_declaration(entity));
4592 /* construct type */
4593 (void) get_ir_type(entity->declaration.type);
4594 if (entity->base.symbol == NULL) {
4598 switch ((storage_class_tag_t) entity->declaration.storage_class) {
4599 case STORAGE_CLASS_STATIC:
4600 if (entity->kind == ENTITY_FUNCTION) {
4601 (void)get_function_entity(entity, NULL);
4603 create_local_static_variable(entity);
4606 case STORAGE_CLASS_EXTERN:
4607 if (entity->kind == ENTITY_FUNCTION) {
4608 assert(entity->function.statement == NULL);
4609 (void)get_function_entity(entity, NULL);
4611 create_global_variable(entity);
4612 create_variable_initializer(entity);
4615 case STORAGE_CLASS_NONE:
4616 case STORAGE_CLASS_AUTO:
4617 case STORAGE_CLASS_REGISTER:
4618 if (entity->kind == ENTITY_FUNCTION) {
4619 if (entity->function.statement != NULL) {
4620 ir_type *owner = get_irg_frame_type(current_ir_graph);
4621 (void)get_function_entity(entity, owner);
4622 entity->declaration.kind = DECLARATION_KIND_INNER_FUNCTION;
4623 enqueue_inner_function(entity);
4625 (void)get_function_entity(entity, NULL);
4628 create_local_variable(entity);
4631 case STORAGE_CLASS_TYPEDEF:
4634 panic("invalid storage class found");
4637 static void initialize_local_declaration(entity_t *entity)
4639 if (entity->base.symbol == NULL)
4642 // no need to emit code in dead blocks
4643 if (entity->declaration.storage_class != STORAGE_CLASS_STATIC
4644 && get_cur_block() == NULL)
4647 switch ((declaration_kind_t) entity->declaration.kind) {
4648 case DECLARATION_KIND_LOCAL_VARIABLE:
4649 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4650 create_variable_initializer(entity);
4653 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4654 allocate_variable_length_array(entity);
4657 case DECLARATION_KIND_COMPOUND_MEMBER:
4658 case DECLARATION_KIND_GLOBAL_VARIABLE:
4659 case DECLARATION_KIND_FUNCTION:
4660 case DECLARATION_KIND_INNER_FUNCTION:
4663 case DECLARATION_KIND_PARAMETER:
4664 case DECLARATION_KIND_PARAMETER_ENTITY:
4665 panic("can't initialize parameters");
4667 case DECLARATION_KIND_UNKNOWN:
4668 panic("can't initialize unknown declaration");
4670 panic("invalid declaration kind");
4673 static void declaration_statement_to_firm(declaration_statement_t *statement)
4675 entity_t *entity = statement->declarations_begin;
4679 entity_t *const last = statement->declarations_end;
4680 for ( ;; entity = entity->base.next) {
4681 if (is_declaration(entity)) {
4682 initialize_local_declaration(entity);
4683 } else if (entity->kind == ENTITY_TYPEDEF) {
4684 /* ยง6.7.7:3 Any array size expressions associated with variable length
4685 * array declarators are evaluated each time the declaration of the
4686 * typedef name is reached in the order of execution. */
4687 type_t *const type = skip_typeref(entity->typedefe.type);
4688 if (is_type_array(type) && type->array.is_vla)
4689 get_vla_size(&type->array);
4696 static void if_statement_to_firm(if_statement_t *statement)
4698 ir_node *cur_block = get_cur_block();
4700 ir_node *fallthrough_block = NULL;
4702 /* the true (blocks) */
4703 ir_node *true_block = NULL;
4704 if (statement->true_statement != NULL) {
4705 true_block = new_immBlock();
4706 set_cur_block(true_block);
4707 statement_to_firm(statement->true_statement);
4708 if (get_cur_block() != NULL) {
4709 ir_node *jmp = new_Jmp();
4710 if (fallthrough_block == NULL)
4711 fallthrough_block = new_immBlock();
4712 add_immBlock_pred(fallthrough_block, jmp);
4716 /* the false (blocks) */
4717 ir_node *false_block = NULL;
4718 if (statement->false_statement != NULL) {
4719 false_block = new_immBlock();
4720 set_cur_block(false_block);
4722 statement_to_firm(statement->false_statement);
4723 if (get_cur_block() != NULL) {
4724 ir_node *jmp = new_Jmp();
4725 if (fallthrough_block == NULL)
4726 fallthrough_block = new_immBlock();
4727 add_immBlock_pred(fallthrough_block, jmp);
4731 /* create the condition */
4732 if (cur_block != NULL) {
4733 if (true_block == NULL || false_block == NULL) {
4734 if (fallthrough_block == NULL)
4735 fallthrough_block = new_immBlock();
4736 if (true_block == NULL)
4737 true_block = fallthrough_block;
4738 if (false_block == NULL)
4739 false_block = fallthrough_block;
4742 set_cur_block(cur_block);
4743 create_condition_evaluation(statement->condition, true_block,
4747 mature_immBlock(true_block);
4748 if (false_block != fallthrough_block && false_block != NULL) {
4749 mature_immBlock(false_block);
4751 if (fallthrough_block != NULL) {
4752 mature_immBlock(fallthrough_block);
4755 set_cur_block(fallthrough_block);
4758 static void while_statement_to_firm(while_statement_t *statement)
4760 ir_node *jmp = NULL;
4761 if (get_cur_block() != NULL) {
4765 /* create the header block */
4766 ir_node *header_block = new_immBlock();
4768 add_immBlock_pred(header_block, jmp);
4772 ir_node *old_continue_label = continue_label;
4773 ir_node *old_break_label = break_label;
4774 continue_label = header_block;
4777 ir_node *body_block = new_immBlock();
4778 set_cur_block(body_block);
4779 statement_to_firm(statement->body);
4780 ir_node *false_block = break_label;
4782 assert(continue_label == header_block);
4783 continue_label = old_continue_label;
4784 break_label = old_break_label;
4786 if (get_cur_block() != NULL) {
4788 add_immBlock_pred(header_block, jmp);
4791 /* shortcut for while(true) */
4792 if (is_constant_expression(statement->condition)
4793 && fold_constant_to_bool(statement->condition) != 0) {
4794 set_cur_block(header_block);
4795 ir_node *header_jmp = new_Jmp();
4796 add_immBlock_pred(body_block, header_jmp);
4798 keep_alive(body_block);
4799 keep_all_memory(body_block);
4800 set_cur_block(body_block);
4802 if (false_block == NULL) {
4803 false_block = new_immBlock();
4806 /* create the condition */
4807 set_cur_block(header_block);
4809 create_condition_evaluation(statement->condition, body_block,
4813 mature_immBlock(body_block);
4814 mature_immBlock(header_block);
4815 if (false_block != NULL) {
4816 mature_immBlock(false_block);
4819 set_cur_block(false_block);
4822 static void do_while_statement_to_firm(do_while_statement_t *statement)
4824 ir_node *jmp = NULL;
4825 if (get_cur_block() != NULL) {
4829 /* create the header block */
4830 ir_node *header_block = new_immBlock();
4833 ir_node *body_block = new_immBlock();
4835 add_immBlock_pred(body_block, jmp);
4838 ir_node *old_continue_label = continue_label;
4839 ir_node *old_break_label = break_label;
4840 continue_label = header_block;
4843 set_cur_block(body_block);
4844 statement_to_firm(statement->body);
4845 ir_node *false_block = break_label;
4847 assert(continue_label == header_block);
4848 continue_label = old_continue_label;
4849 break_label = old_break_label;
4851 if (get_cur_block() != NULL) {
4852 ir_node *body_jmp = new_Jmp();
4853 add_immBlock_pred(header_block, body_jmp);
4854 mature_immBlock(header_block);
4857 if (false_block == NULL) {
4858 false_block = new_immBlock();
4861 /* create the condition */
4862 set_cur_block(header_block);
4864 create_condition_evaluation(statement->condition, body_block, false_block);
4865 mature_immBlock(body_block);
4866 mature_immBlock(header_block);
4867 mature_immBlock(false_block);
4869 set_cur_block(false_block);
4872 static void for_statement_to_firm(for_statement_t *statement)
4874 ir_node *jmp = NULL;
4876 /* create declarations */
4877 entity_t *entity = statement->scope.entities;
4878 for ( ; entity != NULL; entity = entity->base.next) {
4879 if (!is_declaration(entity))
4882 create_local_declaration(entity);
4885 if (get_cur_block() != NULL) {
4886 entity = statement->scope.entities;
4887 for ( ; entity != NULL; entity = entity->base.next) {
4888 if (!is_declaration(entity))
4891 initialize_local_declaration(entity);
4894 if (statement->initialisation != NULL) {
4895 expression_to_firm(statement->initialisation);
4902 /* create the step block */
4903 ir_node *const step_block = new_immBlock();
4904 set_cur_block(step_block);
4905 if (statement->step != NULL) {
4906 expression_to_firm(statement->step);
4908 ir_node *const step_jmp = new_Jmp();
4910 /* create the header block */
4911 ir_node *const header_block = new_immBlock();
4912 set_cur_block(header_block);
4914 add_immBlock_pred(header_block, jmp);
4916 add_immBlock_pred(header_block, step_jmp);
4918 /* the false block */
4919 ir_node *const false_block = new_immBlock();
4922 ir_node *body_block;
4923 if (statement->body != NULL) {
4924 ir_node *const old_continue_label = continue_label;
4925 ir_node *const old_break_label = break_label;
4926 continue_label = step_block;
4927 break_label = false_block;
4929 body_block = new_immBlock();
4930 set_cur_block(body_block);
4931 statement_to_firm(statement->body);
4933 assert(continue_label == step_block);
4934 assert(break_label == false_block);
4935 continue_label = old_continue_label;
4936 break_label = old_break_label;
4938 if (get_cur_block() != NULL) {
4940 add_immBlock_pred(step_block, jmp);
4943 body_block = step_block;
4946 /* create the condition */
4947 set_cur_block(header_block);
4948 if (statement->condition != NULL) {
4949 create_condition_evaluation(statement->condition, body_block,
4952 keep_alive(header_block);
4953 keep_all_memory(header_block);
4955 add_immBlock_pred(body_block, jmp);
4958 mature_immBlock(body_block);
4959 mature_immBlock(false_block);
4960 mature_immBlock(step_block);
4961 mature_immBlock(header_block);
4962 mature_immBlock(false_block);
4964 set_cur_block(false_block);
4967 static void create_jump_statement(const statement_t *statement,
4968 ir_node *target_block)
4970 if (get_cur_block() == NULL)
4973 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4974 ir_node *jump = new_d_Jmp(dbgi);
4975 add_immBlock_pred(target_block, jump);
4977 set_cur_block(NULL);
4980 static ir_node *get_break_label(void)
4982 if (break_label == NULL) {
4983 break_label = new_immBlock();
4988 static void switch_statement_to_firm(switch_statement_t *statement)
4990 ir_node *first_block = NULL;
4991 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4992 ir_node *cond = NULL;
4994 if (get_cur_block() != NULL) {
4995 ir_node *expression = expression_to_firm(statement->expression);
4996 cond = new_d_Cond(dbgi, expression);
4997 first_block = get_cur_block();
5000 set_cur_block(NULL);
5002 ir_node *const old_switch_cond = current_switch_cond;
5003 ir_node *const old_break_label = break_label;
5004 const bool old_saw_default_label = saw_default_label;
5005 saw_default_label = false;
5006 current_switch_cond = cond;
5008 switch_statement_t *const old_switch = current_switch;
5009 current_switch = statement;
5011 /* determine a free number for the default label */
5012 unsigned long num_cases = 0;
5014 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
5015 if (l->expression == NULL) {
5019 if (l->last_case >= l->first_case)
5020 num_cases += l->last_case - l->first_case + 1;
5021 if (l->last_case > def_nr)
5022 def_nr = l->last_case;
5025 if (def_nr == INT_MAX) {
5026 /* Bad: an overflow will occur, we cannot be sure that the
5027 * maximum + 1 is a free number. Scan the values a second
5028 * time to find a free number.
5030 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
5032 memset(bits, 0, (num_cases + 7) >> 3);
5033 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
5034 if (l->expression == NULL) {
5038 unsigned long start = l->first_case > 0 ? (unsigned long)l->first_case : 0;
5039 if (start < num_cases && l->last_case >= 0) {
5040 unsigned long end = (unsigned long)l->last_case < num_cases ?
5041 (unsigned long)l->last_case : num_cases - 1;
5042 for (unsigned long cns = start; cns <= end; ++cns) {
5043 bits[cns >> 3] |= (1 << (cns & 7));
5047 /* We look at the first num_cases constants:
5048 * Either they are dense, so we took the last (num_cases)
5049 * one, or they are not dense, so we will find one free
5053 for (i = 0; i < num_cases; ++i)
5054 if ((bits[i >> 3] & (1 << (i & 7))) == 0)
5062 statement->default_proj_nr = def_nr;
5064 if (statement->body != NULL) {
5065 statement_to_firm(statement->body);
5068 if (get_cur_block() != NULL) {
5069 ir_node *jmp = new_Jmp();
5070 add_immBlock_pred(get_break_label(), jmp);
5073 if (!saw_default_label && first_block != NULL) {
5074 set_cur_block(first_block);
5075 ir_node *const proj = new_d_defaultProj(dbgi, cond,
5076 statement->default_proj_nr);
5077 add_immBlock_pred(get_break_label(), proj);
5080 if (break_label != NULL) {
5081 mature_immBlock(break_label);
5083 set_cur_block(break_label);
5085 assert(current_switch_cond == cond);
5086 current_switch = old_switch;
5087 current_switch_cond = old_switch_cond;
5088 break_label = old_break_label;
5089 saw_default_label = old_saw_default_label;
5092 static void case_label_to_firm(const case_label_statement_t *statement)
5094 if (statement->is_empty_range)
5097 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5099 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
5102 ir_node *block = new_immBlock();
5104 if (current_switch_cond != NULL) {
5105 set_cur_block(get_nodes_block(current_switch_cond));
5106 if (statement->expression != NULL) {
5107 long pn = statement->first_case;
5108 long end_pn = statement->last_case;
5109 assert(pn <= end_pn);
5110 /* create jumps for all cases in the given range */
5112 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
5113 add_immBlock_pred(block, proj);
5114 } while (pn++ < end_pn);
5116 saw_default_label = true;
5117 proj = new_d_defaultProj(dbgi, current_switch_cond,
5118 current_switch->default_proj_nr);
5120 add_immBlock_pred(block, proj);
5124 if (fallthrough != NULL) {
5125 add_immBlock_pred(block, fallthrough);
5127 mature_immBlock(block);
5128 set_cur_block(block);
5130 if (statement->statement != NULL) {
5131 statement_to_firm(statement->statement);
5135 static void label_to_firm(const label_statement_t *statement)
5137 ir_node *block = get_label_block(statement->label);
5139 if (get_cur_block() != NULL) {
5140 ir_node *jmp = new_Jmp();
5141 add_immBlock_pred(block, jmp);
5144 set_cur_block(block);
5146 keep_all_memory(block);
5148 if (statement->statement != NULL) {
5149 statement_to_firm(statement->statement);
5153 static void goto_to_firm(const goto_statement_t *statement)
5155 if (get_cur_block() == NULL)
5158 if (statement->expression) {
5159 ir_node *irn = expression_to_firm(statement->expression);
5160 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5161 ir_node *ijmp = new_d_IJmp(dbgi, irn);
5163 set_irn_link(ijmp, ijmp_list);
5166 ir_node *block = get_label_block(statement->label);
5167 ir_node *jmp = new_Jmp();
5168 add_immBlock_pred(block, jmp);
5170 set_cur_block(NULL);
5173 static void asm_statement_to_firm(const asm_statement_t *statement)
5175 bool needs_memory = false;
5177 if (statement->is_volatile) {
5178 needs_memory = true;
5181 size_t n_clobbers = 0;
5182 asm_clobber_t *clobber = statement->clobbers;
5183 for ( ; clobber != NULL; clobber = clobber->next) {
5184 const char *clobber_str = clobber->clobber.begin;
5186 if (!be_is_valid_clobber(clobber_str)) {
5187 errorf(&statement->base.source_position,
5188 "invalid clobber '%s' specified", clobber->clobber);
5192 if (strcmp(clobber_str, "memory") == 0) {
5193 needs_memory = true;
5197 ident *id = new_id_from_str(clobber_str);
5198 obstack_ptr_grow(&asm_obst, id);
5201 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
5202 ident **clobbers = NULL;
5203 if (n_clobbers > 0) {
5204 clobbers = obstack_finish(&asm_obst);
5207 size_t n_inputs = 0;
5208 asm_argument_t *argument = statement->inputs;
5209 for ( ; argument != NULL; argument = argument->next)
5211 size_t n_outputs = 0;
5212 argument = statement->outputs;
5213 for ( ; argument != NULL; argument = argument->next)
5216 unsigned next_pos = 0;
5218 ir_node *ins[n_inputs + n_outputs + 1];
5221 ir_asm_constraint tmp_in_constraints[n_outputs];
5223 const expression_t *out_exprs[n_outputs];
5224 ir_node *out_addrs[n_outputs];
5225 size_t out_size = 0;
5227 argument = statement->outputs;
5228 for ( ; argument != NULL; argument = argument->next) {
5229 const char *constraints = argument->constraints.begin;
5230 asm_constraint_flags_t asm_flags
5231 = be_parse_asm_constraints(constraints);
5233 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5234 warningf(&statement->base.source_position,
5235 "some constraints in '%s' are not supported", constraints);
5237 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5238 errorf(&statement->base.source_position,
5239 "some constraints in '%s' are invalid", constraints);
5242 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
5243 errorf(&statement->base.source_position,
5244 "no write flag specified for output constraints '%s'",
5249 unsigned pos = next_pos++;
5250 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5251 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5252 expression_t *expr = argument->expression;
5253 ir_node *addr = expression_to_addr(expr);
5254 /* in+output, construct an artifical same_as constraint on the
5256 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
5258 ir_node *value = get_value_from_lvalue(expr, addr);
5260 snprintf(buf, sizeof(buf), "%u", (unsigned) out_size);
5262 ir_asm_constraint constraint;
5263 constraint.pos = pos;
5264 constraint.constraint = new_id_from_str(buf);
5265 constraint.mode = get_ir_mode_storage(expr->base.type);
5266 tmp_in_constraints[in_size] = constraint;
5267 ins[in_size] = value;
5272 out_exprs[out_size] = expr;
5273 out_addrs[out_size] = addr;
5275 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5276 /* pure memory ops need no input (but we have to make sure we
5277 * attach to the memory) */
5278 assert(! (asm_flags &
5279 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5280 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5281 needs_memory = true;
5283 /* we need to attach the address to the inputs */
5284 expression_t *expr = argument->expression;
5286 ir_asm_constraint constraint;
5287 constraint.pos = pos;
5288 constraint.constraint = new_id_from_str(constraints);
5289 constraint.mode = NULL;
5290 tmp_in_constraints[in_size] = constraint;
5292 ins[in_size] = expression_to_addr(expr);
5296 errorf(&statement->base.source_position,
5297 "only modifiers but no place set in constraints '%s'",
5302 ir_asm_constraint constraint;
5303 constraint.pos = pos;
5304 constraint.constraint = new_id_from_str(constraints);
5305 constraint.mode = get_ir_mode_storage(argument->expression->base.type);
5307 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5309 assert(obstack_object_size(&asm_obst)
5310 == out_size * sizeof(ir_asm_constraint));
5311 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
5314 obstack_grow(&asm_obst, tmp_in_constraints,
5315 in_size * sizeof(tmp_in_constraints[0]));
5316 /* find and count input and output arguments */
5317 argument = statement->inputs;
5318 for ( ; argument != NULL; argument = argument->next) {
5319 const char *constraints = argument->constraints.begin;
5320 asm_constraint_flags_t asm_flags
5321 = be_parse_asm_constraints(constraints);
5323 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5324 errorf(&statement->base.source_position,
5325 "some constraints in '%s' are not supported", constraints);
5328 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5329 errorf(&statement->base.source_position,
5330 "some constraints in '%s' are invalid", constraints);
5333 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
5334 errorf(&statement->base.source_position,
5335 "write flag specified for input constraints '%s'",
5341 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5342 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5343 /* we can treat this as "normal" input */
5344 input = expression_to_firm(argument->expression);
5345 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5346 /* pure memory ops need no input (but we have to make sure we
5347 * attach to the memory) */
5348 assert(! (asm_flags &
5349 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5350 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5351 needs_memory = true;
5352 input = expression_to_addr(argument->expression);
5354 errorf(&statement->base.source_position,
5355 "only modifiers but no place set in constraints '%s'",
5360 ir_asm_constraint constraint;
5361 constraint.pos = next_pos++;
5362 constraint.constraint = new_id_from_str(constraints);
5363 constraint.mode = get_irn_mode(input);
5365 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5366 ins[in_size++] = input;
5370 ir_asm_constraint constraint;
5371 constraint.pos = next_pos++;
5372 constraint.constraint = new_id_from_str("");
5373 constraint.mode = mode_M;
5375 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5376 ins[in_size++] = get_store();
5379 assert(obstack_object_size(&asm_obst)
5380 == in_size * sizeof(ir_asm_constraint));
5381 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
5383 /* create asm node */
5384 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5386 ident *asm_text = new_id_from_str(statement->asm_text.begin);
5388 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
5389 out_size, output_constraints,
5390 n_clobbers, clobbers, asm_text);
5392 if (statement->is_volatile) {
5393 set_irn_pinned(node, op_pin_state_pinned);
5395 set_irn_pinned(node, op_pin_state_floats);
5398 /* create output projs & connect them */
5400 ir_node *projm = new_Proj(node, mode_M, out_size+1);
5405 for (i = 0; i < out_size; ++i) {
5406 const expression_t *out_expr = out_exprs[i];
5408 ir_mode *mode = get_ir_mode_storage(out_expr->base.type);
5409 ir_node *proj = new_Proj(node, mode, pn);
5410 ir_node *addr = out_addrs[i];
5412 set_value_for_expression_addr(out_expr, proj, addr);
5416 static void ms_try_statement_to_firm(ms_try_statement_t *statement)
5418 statement_to_firm(statement->try_statement);
5419 warningf(&statement->base.source_position, "structured exception handling ignored");
5422 static void leave_statement_to_firm(leave_statement_t *statement)
5424 errorf(&statement->base.source_position, "__leave not supported yet");
5428 * Transform a statement.
5430 static void statement_to_firm(statement_t *statement)
5433 assert(!statement->base.transformed);
5434 statement->base.transformed = true;
5437 switch (statement->kind) {
5438 case STATEMENT_INVALID:
5439 panic("invalid statement found");
5440 case STATEMENT_EMPTY:
5443 case STATEMENT_COMPOUND:
5444 compound_statement_to_firm(&statement->compound);
5446 case STATEMENT_RETURN:
5447 return_statement_to_firm(&statement->returns);
5449 case STATEMENT_EXPRESSION:
5450 expression_statement_to_firm(&statement->expression);
5453 if_statement_to_firm(&statement->ifs);
5455 case STATEMENT_WHILE:
5456 while_statement_to_firm(&statement->whiles);
5458 case STATEMENT_DO_WHILE:
5459 do_while_statement_to_firm(&statement->do_while);
5461 case STATEMENT_DECLARATION:
5462 declaration_statement_to_firm(&statement->declaration);
5464 case STATEMENT_BREAK:
5465 create_jump_statement(statement, get_break_label());
5467 case STATEMENT_CONTINUE:
5468 create_jump_statement(statement, continue_label);
5470 case STATEMENT_SWITCH:
5471 switch_statement_to_firm(&statement->switchs);
5473 case STATEMENT_CASE_LABEL:
5474 case_label_to_firm(&statement->case_label);
5477 for_statement_to_firm(&statement->fors);
5479 case STATEMENT_LABEL:
5480 label_to_firm(&statement->label);
5482 case STATEMENT_GOTO:
5483 goto_to_firm(&statement->gotos);
5486 asm_statement_to_firm(&statement->asms);
5488 case STATEMENT_MS_TRY:
5489 ms_try_statement_to_firm(&statement->ms_try);
5491 case STATEMENT_LEAVE:
5492 leave_statement_to_firm(&statement->leave);
5495 panic("statement not implemented");
5498 static int count_local_variables(const entity_t *entity,
5499 const entity_t *const last)
5502 entity_t const *const end = last != NULL ? last->base.next : NULL;
5503 for (; entity != end; entity = entity->base.next) {
5507 if (entity->kind == ENTITY_VARIABLE) {
5508 type = skip_typeref(entity->declaration.type);
5509 address_taken = entity->variable.address_taken;
5510 } else if (entity->kind == ENTITY_PARAMETER) {
5511 type = skip_typeref(entity->declaration.type);
5512 address_taken = entity->parameter.address_taken;
5517 if (!address_taken && is_type_scalar(type))
5523 static void count_local_variables_in_stmt(statement_t *stmt, void *const env)
5525 int *const count = env;
5527 switch (stmt->kind) {
5528 case STATEMENT_DECLARATION: {
5529 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5530 *count += count_local_variables(decl_stmt->declarations_begin,
5531 decl_stmt->declarations_end);
5536 *count += count_local_variables(stmt->fors.scope.entities, NULL);
5545 * Return the number of local (alias free) variables used by a function.
5547 static int get_function_n_local_vars(entity_t *entity)
5549 const function_t *function = &entity->function;
5552 /* count parameters */
5553 count += count_local_variables(function->parameters.entities, NULL);
5555 /* count local variables declared in body */
5556 walk_statements(function->statement, count_local_variables_in_stmt, &count);
5561 * Build Firm code for the parameters of a function.
5563 static void initialize_function_parameters(entity_t *entity)
5565 assert(entity->kind == ENTITY_FUNCTION);
5566 ir_graph *irg = current_ir_graph;
5567 ir_node *args = get_irg_args(irg);
5568 ir_node *start_block = get_irg_start_block(irg);
5569 ir_type *function_irtype = get_ir_type(entity->declaration.type);
5570 int first_param_nr = 0;
5572 if (entity->function.need_closure) {
5573 /* add an extra parameter for the static link */
5574 entity->function.static_link = new_r_Proj(start_block, args, mode_P_data, 0);
5579 entity_t *parameter = entity->function.parameters.entities;
5580 for ( ; parameter != NULL; parameter = parameter->base.next, ++n) {
5581 if (parameter->kind != ENTITY_PARAMETER)
5584 assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN);
5585 type_t *type = skip_typeref(parameter->declaration.type);
5587 bool needs_entity = parameter->parameter.address_taken;
5588 assert(!is_type_array(type));
5589 if (is_type_compound(type)) {
5590 needs_entity = true;
5594 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5595 ident *id = new_id_from_str(parameter->base.symbol->string);
5596 set_entity_ident(entity, id);
5598 parameter->declaration.kind
5599 = DECLARATION_KIND_PARAMETER_ENTITY;
5600 parameter->parameter.v.entity = entity;
5604 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5605 ir_mode *param_mode = get_type_mode(param_irtype);
5607 long pn = n + first_param_nr;
5608 ir_node *value = new_r_Proj(start_block, args, param_mode, pn);
5610 ir_mode *mode = get_ir_mode_storage(type);
5611 value = create_conv(NULL, value, mode);
5612 value = do_strict_conv(NULL, value);
5614 parameter->declaration.kind = DECLARATION_KIND_PARAMETER;
5615 parameter->parameter.v.value_number = next_value_number_function;
5616 set_irg_loc_description(current_ir_graph, next_value_number_function,
5618 ++next_value_number_function;
5620 set_value(parameter->parameter.v.value_number, value);
5625 * Handle additional decl modifiers for IR-graphs
5627 * @param irg the IR-graph
5628 * @param dec_modifiers additional modifiers
5630 static void handle_decl_modifier_irg(ir_graph_ptr irg,
5631 decl_modifiers_t decl_modifiers)
5633 if (decl_modifiers & DM_RETURNS_TWICE) {
5634 /* TRUE if the declaration includes __attribute__((returns_twice)) */
5635 set_irg_additional_property(irg, mtp_property_returns_twice);
5637 if (decl_modifiers & DM_NORETURN) {
5638 /* TRUE if the declaration includes the Microsoft
5639 __declspec(noreturn) specifier. */
5640 set_irg_additional_property(irg, mtp_property_noreturn);
5642 if (decl_modifiers & DM_NOTHROW) {
5643 /* TRUE if the declaration includes the Microsoft
5644 __declspec(nothrow) specifier. */
5645 set_irg_additional_property(irg, mtp_property_nothrow);
5647 if (decl_modifiers & DM_NAKED) {
5648 /* TRUE if the declaration includes the Microsoft
5649 __declspec(naked) specifier. */
5650 set_irg_additional_property(irg, mtp_property_naked);
5652 if (decl_modifiers & DM_FORCEINLINE) {
5653 /* TRUE if the declaration includes the
5654 Microsoft __forceinline specifier. */
5655 set_irg_inline_property(irg, irg_inline_forced);
5657 if (decl_modifiers & DM_NOINLINE) {
5658 /* TRUE if the declaration includes the Microsoft
5659 __declspec(noinline) specifier. */
5660 set_irg_inline_property(irg, irg_inline_forbidden);
5664 static void add_function_pointer(ir_type *segment, ir_entity *method,
5665 const char *unique_template)
5667 ir_type *method_type = get_entity_type(method);
5668 ir_type *ptr_type = new_type_pointer(method_type);
5670 /* these entities don't really have a name but firm only allows
5672 * Note that we mustn't give these entities a name since for example
5673 * Mach-O doesn't allow them. */
5674 ident *ide = id_unique(unique_template);
5675 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5676 ir_graph *irg = get_const_code_irg();
5677 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5680 set_entity_ld_ident(ptr, new_id_from_chars("", 0));
5681 set_entity_compiler_generated(ptr, 1);
5682 set_entity_visibility(ptr, ir_visibility_local);
5683 add_entity_linkage(ptr, IR_LINKAGE_CONSTANT|IR_LINKAGE_HIDDEN_USER);
5684 set_atomic_ent_value(ptr, val);
5688 * Generate possible IJmp branches to a given label block.
5690 static void gen_ijmp_branches(ir_node *block)
5693 for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) {
5694 add_immBlock_pred(block, ijmp);
5699 * Create code for a function and all inner functions.
5701 * @param entity the function entity
5703 static void create_function(entity_t *entity)
5705 assert(entity->kind == ENTITY_FUNCTION);
5706 ir_entity *function_entity = get_function_entity(entity, current_outer_frame);
5708 if (entity->function.statement == NULL)
5711 if (is_main(entity) && firm_opt.os_support == OS_SUPPORT_MINGW) {
5712 prepare_main_collect2(entity);
5715 inner_functions = NULL;
5716 current_trampolines = NULL;
5718 if (entity->declaration.modifiers & DM_CONSTRUCTOR) {
5719 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5720 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5722 if (entity->declaration.modifiers & DM_DESTRUCTOR) {
5723 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5724 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5727 current_function_entity = entity;
5728 current_function_name = NULL;
5729 current_funcsig = NULL;
5731 assert(all_labels == NULL);
5732 all_labels = NEW_ARR_F(label_t *, 0);
5735 int n_local_vars = get_function_n_local_vars(entity);
5736 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5738 ir_graph *old_current_function = current_function;
5739 current_function = irg;
5741 set_irg_fp_model(irg, firm_opt.fp_model);
5742 tarval_enable_fp_ops(1);
5743 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5745 ir_node *first_block = get_cur_block();
5747 /* set inline flags */
5748 if (entity->function.is_inline)
5749 set_irg_inline_property(irg, irg_inline_recomended);
5750 handle_decl_modifier_irg(irg, entity->declaration.modifiers);
5752 next_value_number_function = 0;
5753 initialize_function_parameters(entity);
5754 current_static_link = entity->function.static_link;
5756 statement_to_firm(entity->function.statement);
5758 ir_node *end_block = get_irg_end_block(irg);
5760 /* do we have a return statement yet? */
5761 if (get_cur_block() != NULL) {
5762 type_t *type = skip_typeref(entity->declaration.type);
5763 assert(is_type_function(type));
5764 const function_type_t *func_type = &type->function;
5765 const type_t *return_type
5766 = skip_typeref(func_type->return_type);
5769 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5770 ret = new_Return(get_store(), 0, NULL);
5773 if (is_type_scalar(return_type)) {
5774 mode = get_ir_mode_storage(func_type->return_type);
5780 /* ยง5.1.2.2.3 main implicitly returns 0 */
5781 if (is_main(entity)) {
5782 in[0] = new_Const(get_mode_null(mode));
5784 in[0] = new_Unknown(mode);
5786 ret = new_Return(get_store(), 1, in);
5788 add_immBlock_pred(end_block, ret);
5791 bool has_computed_gotos = false;
5792 for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
5793 label_t *label = all_labels[i];
5794 if (label->address_taken) {
5795 gen_ijmp_branches(label->block);
5796 has_computed_gotos = true;
5798 mature_immBlock(label->block);
5800 if (has_computed_gotos) {
5801 /* if we have computed goto's in the function, we cannot inline it */
5802 if (get_irg_inline_property(irg) >= irg_inline_recomended) {
5803 warningf(&entity->base.source_position,
5804 "function '%Y' can never be inlined because it contains a computed goto",
5805 entity->base.symbol);
5807 set_irg_inline_property(irg, irg_inline_forbidden);
5810 DEL_ARR_F(all_labels);
5813 mature_immBlock(first_block);
5814 mature_immBlock(end_block);
5816 irg_finalize_cons(irg);
5818 /* finalize the frame type */
5819 ir_type *frame_type = get_irg_frame_type(irg);
5820 int n = get_compound_n_members(frame_type);
5823 for (int i = 0; i < n; ++i) {
5824 ir_entity *entity = get_compound_member(frame_type, i);
5825 ir_type *entity_type = get_entity_type(entity);
5827 int align = get_type_alignment_bytes(entity_type);
5828 if (align > align_all)
5832 misalign = offset % align;
5834 offset += align - misalign;
5838 set_entity_offset(entity, offset);
5839 offset += get_type_size_bytes(entity_type);
5841 set_type_size_bytes(frame_type, offset);
5842 set_type_alignment_bytes(frame_type, align_all);
5845 current_function = old_current_function;
5847 if (current_trampolines != NULL) {
5848 DEL_ARR_F(current_trampolines);
5849 current_trampolines = NULL;
5852 /* create inner functions if any */
5853 entity_t **inner = inner_functions;
5854 if (inner != NULL) {
5855 ir_type *rem_outer_frame = current_outer_frame;
5856 current_outer_frame = get_irg_frame_type(current_ir_graph);
5857 ir_type *rem_outer_value_type = current_outer_value_type;
5858 current_outer_value_type = get_irg_value_param_type(current_ir_graph);
5859 for (int i = ARR_LEN(inner) - 1; i >= 0; --i) {
5860 create_function(inner[i]);
5864 current_outer_value_type = rem_outer_value_type;
5865 current_outer_frame = rem_outer_frame;
5869 static void scope_to_firm(scope_t *scope)
5871 /* first pass: create declarations */
5872 entity_t *entity = scope->entities;
5873 for ( ; entity != NULL; entity = entity->base.next) {
5874 if (entity->base.symbol == NULL)
5877 if (entity->kind == ENTITY_FUNCTION) {
5878 if (entity->function.btk != bk_none) {
5879 /* builtins have no representation */
5882 (void)get_function_entity(entity, NULL);
5883 } else if (entity->kind == ENTITY_VARIABLE) {
5884 create_global_variable(entity);
5885 } else if (entity->kind == ENTITY_NAMESPACE) {
5886 scope_to_firm(&entity->namespacee.members);
5890 /* second pass: create code/initializers */
5891 entity = scope->entities;
5892 for ( ; entity != NULL; entity = entity->base.next) {
5893 if (entity->base.symbol == NULL)
5896 if (entity->kind == ENTITY_FUNCTION) {
5897 if (entity->function.btk != bk_none) {
5898 /* builtins have no representation */
5901 create_function(entity);
5902 } else if (entity->kind == ENTITY_VARIABLE) {
5903 assert(entity->declaration.kind
5904 == DECLARATION_KIND_GLOBAL_VARIABLE);
5905 current_ir_graph = get_const_code_irg();
5906 create_variable_initializer(entity);
5911 void init_ast2firm(void)
5913 obstack_init(&asm_obst);
5914 init_atomic_modes();
5916 ir_set_debug_retrieve(dbg_retrieve);
5917 ir_set_type_debug_retrieve(dbg_print_type_dbg_info);
5919 /* OS option must be set to the backend */
5920 switch (firm_opt.os_support) {
5921 case OS_SUPPORT_MINGW:
5922 create_ld_ident = create_name_win32;
5924 case OS_SUPPORT_LINUX:
5925 create_ld_ident = create_name_linux_elf;
5927 case OS_SUPPORT_MACHO:
5928 create_ld_ident = create_name_macho;
5931 panic("unexpected OS support mode");
5934 /* create idents for all known runtime functions */
5935 for (size_t i = 0; i < lengthof(rts_data); ++i) {
5936 rts_idents[i] = new_id_from_str(rts_data[i].name);
5939 entitymap_init(&entitymap);
5942 static void init_ir_types(void)
5944 static int ir_types_initialized = 0;
5945 if (ir_types_initialized)
5947 ir_types_initialized = 1;
5949 ir_type_int = get_ir_type(type_int);
5950 ir_type_char = get_ir_type(type_char);
5951 ir_type_const_char = get_ir_type(type_const_char);
5952 ir_type_wchar_t = get_ir_type(type_wchar_t);
5953 ir_type_void = get_ir_type(type_void);
5955 be_params = be_get_backend_param();
5956 mode_float_arithmetic = be_params->mode_float_arithmetic;
5958 stack_param_align = be_params->stack_param_align;
5961 void exit_ast2firm(void)
5963 entitymap_destroy(&entitymap);
5964 obstack_free(&asm_obst, NULL);
5967 static void global_asm_to_firm(statement_t *s)
5969 for (; s != NULL; s = s->base.next) {
5970 assert(s->kind == STATEMENT_ASM);
5972 char const *const text = s->asms.asm_text.begin;
5973 size_t size = s->asms.asm_text.size;
5975 /* skip the last \0 */
5976 if (text[size - 1] == '\0')
5979 ident *const id = new_id_from_chars(text, size);
5984 void translation_unit_to_firm(translation_unit_t *unit)
5986 /* just to be sure */
5987 continue_label = NULL;
5989 current_switch_cond = NULL;
5990 current_translation_unit = unit;
5994 scope_to_firm(&unit->scope);
5995 global_asm_to_firm(unit->global_asm);
5997 current_ir_graph = NULL;
5998 current_translation_unit = NULL;