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_mode_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 },
872 { rts_mempcpy, 1, "mempcpy", 3, _GNUC },
873 { rts_memmove, 1, "memmove", 3, _C89 },
874 { rts_memset, 1, "memset", 3, _C89 },
875 { rts_memcmp, 1, "memcmp", 3, _C89 },
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 function_type_t *function_type
1030 = &entity->declaration.type->function;
1031 /* rts_entities code can't handle a "wrong" number of parameters */
1032 if (function_type->unspecified_parameters)
1035 /* check number of parameters */
1036 int n_params = count_parameters(function_type);
1037 if (n_params != rts_data[i].n_params)
1040 type_t *return_type = skip_typeref(function_type->return_type);
1041 int n_res = return_type != type_void ? 1 : 0;
1042 if (n_res != rts_data[i].n_res)
1045 /* ignore those rts functions not necessary needed for current mode */
1046 if ((c_mode & rts_data[i].flags) == 0)
1048 assert(rts_entities[rts_data[i].id] == NULL);
1049 rts_entities[rts_data[i].id] = irentity;
1053 entitymap_insert(&entitymap, symbol, irentity);
1056 original_entity->declaration.kind = DECLARATION_KIND_FUNCTION;
1057 original_entity->function.irentity = irentity;
1063 * Creates a SymConst for a given entity.
1065 * @param dbgi debug info
1066 * @param mode the (reference) mode for the SymConst
1067 * @param entity the entity
1069 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1072 assert(entity != NULL);
1073 union symconst_symbol sym;
1074 sym.entity_p = entity;
1075 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1078 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1080 ir_mode *value_mode = get_irn_mode(value);
1082 if (value_mode == dest_mode || is_Bad(value))
1085 if (dest_mode == mode_b) {
1086 ir_node *zero = new_Const(get_mode_null(value_mode));
1087 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1088 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1092 return new_d_Conv(dbgi, value, dest_mode);
1096 * Creates a SymConst node representing a wide string literal.
1098 * @param literal the wide string literal
1100 static ir_node *wide_string_literal_to_firm(
1101 const string_literal_expression_t *literal)
1103 ir_type *const global_type = get_glob_type();
1104 ir_type *const elem_type = ir_type_wchar_t;
1105 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1106 ir_type *const type = new_type_array(1, elem_type);
1108 ident *const id = id_unique("str.%u");
1109 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1110 set_entity_ld_ident(entity, id);
1111 set_entity_visibility(entity, ir_visibility_private);
1112 add_entity_linkage(entity, IR_LINKAGE_CONSTANT);
1114 ir_mode *const mode = get_type_mode(elem_type);
1115 const size_t slen = wstrlen(&literal->value);
1117 set_array_lower_bound_int(type, 0, 0);
1118 set_array_upper_bound_int(type, 0, slen);
1119 set_type_size_bytes(type, slen * get_mode_size_bytes(mode));
1120 set_type_state(type, layout_fixed);
1122 ir_initializer_t *initializer = create_initializer_compound(slen);
1123 const char *p = literal->value.begin;
1124 for (size_t i = 0; i < slen; ++i) {
1125 assert(p < literal->value.begin + literal->value.size);
1126 utf32 v = read_utf8_char(&p);
1127 tarval *tv = new_tarval_from_long(v, mode);
1128 ir_initializer_t *val = create_initializer_tarval(tv);
1129 set_initializer_compound_value(initializer, i, val);
1131 set_entity_initializer(entity, initializer);
1133 return create_symconst(dbgi, mode_P_data, entity);
1137 * Creates a SymConst node representing a string constant.
1139 * @param src_pos the source position of the string constant
1140 * @param id_prefix a prefix for the name of the generated string constant
1141 * @param value the value of the string constant
1143 static ir_node *string_to_firm(const source_position_t *const src_pos,
1144 const char *const id_prefix,
1145 const string_t *const value)
1147 ir_type *const global_type = get_glob_type();
1148 dbg_info *const dbgi = get_dbg_info(src_pos);
1149 ir_type *const type = new_type_array(1, ir_type_const_char);
1151 ident *const id = id_unique(id_prefix);
1152 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1153 set_entity_ld_ident(entity, id);
1154 set_entity_visibility(entity, ir_visibility_private);
1155 add_entity_linkage(entity, IR_LINKAGE_CONSTANT);
1157 ir_type *const elem_type = ir_type_const_char;
1158 ir_mode *const mode = get_type_mode(elem_type);
1160 const char* const string = value->begin;
1161 const size_t slen = value->size;
1163 set_array_lower_bound_int(type, 0, 0);
1164 set_array_upper_bound_int(type, 0, slen);
1165 set_type_size_bytes(type, slen);
1166 set_type_state(type, layout_fixed);
1168 ir_initializer_t *initializer = create_initializer_compound(slen);
1169 for (size_t i = 0; i < slen; ++i) {
1170 tarval *tv = new_tarval_from_long(string[i], mode);
1171 ir_initializer_t *val = create_initializer_tarval(tv);
1172 set_initializer_compound_value(initializer, i, val);
1174 set_entity_initializer(entity, initializer);
1176 return create_symconst(dbgi, mode_P_data, entity);
1179 static bool try_create_integer(literal_expression_t *literal,
1180 type_t *type, unsigned char base)
1182 const char *string = literal->value.begin;
1183 size_t size = literal->value.size;
1185 assert(type->kind == TYPE_ATOMIC);
1186 atomic_type_kind_t akind = type->atomic.akind;
1188 ir_mode *mode = atomic_modes[akind];
1189 tarval *tv = new_integer_tarval_from_str(string, size, 1, base, mode);
1190 if (tv == tarval_bad)
1193 literal->base.type = type;
1194 literal->target_value = tv;
1198 static void create_integer_tarval(literal_expression_t *literal)
1202 symbol_t *suffix = literal->suffix;
1204 if (suffix != NULL) {
1205 for (const char *c = suffix->string; *c != '\0'; ++c) {
1206 if (*c == 'u' || *c == 'U') { ++us; }
1207 if (*c == 'l' || *c == 'L') { ++ls; }
1212 switch (literal->base.kind) {
1213 case EXPR_LITERAL_INTEGER_OCTAL: base = 8; break;
1214 case EXPR_LITERAL_INTEGER: base = 10; break;
1215 case EXPR_LITERAL_INTEGER_HEXADECIMAL: base = 16; break;
1216 default: panic("invalid literal kind");
1219 tarval_int_overflow_mode_t old_mode = tarval_get_integer_overflow_mode();
1221 /* now try if the constant is small enough for some types */
1222 tarval_set_integer_overflow_mode(TV_OVERFLOW_BAD);
1224 if (us == 0 && try_create_integer(literal, type_int, base))
1226 if ((us == 1 || base != 10)
1227 && try_create_integer(literal, type_unsigned_int, base))
1231 if (us == 0 && try_create_integer(literal, type_long, base))
1233 if ((us == 1 || base != 10)
1234 && try_create_integer(literal, type_unsigned_long, base))
1237 /* last try? then we should not report tarval_bad */
1238 if (us != 1 && base == 10)
1239 tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP);
1240 if (us == 0 && try_create_integer(literal, type_long_long, base))
1244 assert(us == 1 || base != 10);
1245 tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP);
1246 bool res = try_create_integer(literal, type_unsigned_long_long, base);
1248 panic("internal error when parsing number literal");
1251 tarval_set_integer_overflow_mode(old_mode);
1254 void determine_literal_type(literal_expression_t *literal)
1256 switch (literal->base.kind) {
1257 case EXPR_LITERAL_INTEGER:
1258 case EXPR_LITERAL_INTEGER_OCTAL:
1259 case EXPR_LITERAL_INTEGER_HEXADECIMAL:
1260 create_integer_tarval(literal);
1268 * Creates a Const node representing a constant.
1270 static ir_node *literal_to_firm(const literal_expression_t *literal)
1272 type_t *type = skip_typeref(literal->base.type);
1273 ir_mode *mode = get_ir_mode_storage(type);
1274 const char *string = literal->value.begin;
1275 size_t size = literal->value.size;
1278 switch (literal->base.kind) {
1279 case EXPR_LITERAL_WIDE_CHARACTER: {
1280 utf32 v = read_utf8_char(&string);
1282 size_t len = snprintf(buf, sizeof(buf), UTF32_PRINTF_FORMAT, v);
1284 tv = new_tarval_from_str(buf, len, mode);
1287 case EXPR_LITERAL_CHARACTER: {
1289 if (size == 1 && char_is_signed) {
1290 v = (signed char)string[0];
1293 for (size_t i = 0; i < size; ++i) {
1294 v = (v << 8) | ((unsigned char)string[i]);
1298 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1300 tv = new_tarval_from_str(buf, len, mode);
1303 case EXPR_LITERAL_INTEGER:
1304 case EXPR_LITERAL_INTEGER_OCTAL:
1305 case EXPR_LITERAL_INTEGER_HEXADECIMAL:
1306 assert(literal->target_value != NULL);
1307 tv = literal->target_value;
1309 case EXPR_LITERAL_FLOATINGPOINT:
1310 tv = new_tarval_from_str(string, size, mode);
1312 case EXPR_LITERAL_FLOATINGPOINT_HEXADECIMAL: {
1313 char buffer[size + 2];
1314 memcpy(buffer, "0x", 2);
1315 memcpy(buffer+2, string, size);
1316 tv = new_tarval_from_str(buffer, size+2, mode);
1319 case EXPR_LITERAL_BOOLEAN:
1320 if (string[0] == 't') {
1321 tv = get_mode_one(mode);
1323 assert(string[0] == 'f');
1324 tv = get_mode_null(mode);
1327 case EXPR_LITERAL_MS_NOOP:
1328 tv = get_mode_null(mode);
1333 panic("Invalid literal kind found");
1336 dbg_info *dbgi = get_dbg_info(&literal->base.source_position);
1337 ir_node *res = new_d_Const(dbgi, tv);
1338 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
1339 return create_conv(dbgi, res, mode_arith);
1343 * Allocate an area of size bytes aligned at alignment
1346 static ir_entity *alloc_trampoline(ir_type *frame_type, int size, unsigned alignment)
1348 static unsigned area_cnt = 0;
1351 ir_type *tp = new_type_array(1, ir_type_char);
1352 set_array_bounds_int(tp, 0, 0, size);
1353 set_type_alignment_bytes(tp, alignment);
1355 snprintf(buf, sizeof(buf), "trampolin%u", area_cnt++);
1356 ident *name = new_id_from_str(buf);
1357 ir_entity *area = new_entity(frame_type, name, tp);
1359 /* mark this entity as compiler generated */
1360 set_entity_compiler_generated(area, 1);
1365 * Return a node representing a trampoline region
1366 * for a given function entity.
1368 * @param dbgi debug info
1369 * @param entity the function entity
1371 static ir_node *get_trampoline_region(dbg_info *dbgi, ir_entity *entity)
1373 ir_entity *region = NULL;
1376 if (current_trampolines != NULL) {
1377 for (i = ARR_LEN(current_trampolines) - 1; i >= 0; --i) {
1378 if (current_trampolines[i].function == entity) {
1379 region = current_trampolines[i].region;
1384 current_trampolines = NEW_ARR_F(trampoline_region, 0);
1386 ir_graph *irg = current_ir_graph;
1387 if (region == NULL) {
1388 /* create a new region */
1389 ir_type *frame_tp = get_irg_frame_type(irg);
1390 trampoline_region reg;
1391 reg.function = entity;
1393 reg.region = alloc_trampoline(frame_tp,
1394 be_params->trampoline_size,
1395 be_params->trampoline_align);
1396 ARR_APP1(trampoline_region, current_trampolines, reg);
1397 region = reg.region;
1399 return new_d_simpleSel(dbgi, get_irg_no_mem(irg), get_irg_frame(irg),
1404 * Creates a trampoline for a function represented by an entity.
1406 * @param dbgi debug info
1407 * @param mode the (reference) mode for the function address
1408 * @param entity the function entity
1410 static ir_node *create_trampoline(dbg_info *dbgi, ir_mode *mode,
1413 assert(entity != NULL);
1415 in[0] = get_trampoline_region(dbgi, entity);
1416 in[1] = create_symconst(dbgi, mode, entity);
1417 in[2] = get_irg_frame(current_ir_graph);
1419 ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_inner_trampoline, get_unknown_type());
1420 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1421 return new_Proj(irn, mode, pn_Builtin_1_result);
1425 * Dereference an address.
1427 * @param dbgi debug info
1428 * @param type the type of the dereferenced result (the points_to type)
1429 * @param addr the address to dereference
1431 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1432 ir_node *const addr)
1434 ir_type *irtype = get_ir_type(type);
1435 if (is_compound_type(irtype)
1436 || is_Method_type(irtype)
1437 || is_Array_type(irtype)) {
1441 ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
1442 ? cons_volatile : cons_none;
1443 ir_mode *const mode = get_type_mode(irtype);
1444 ir_node *const memory = get_store();
1445 ir_node *const load = new_d_Load(dbgi, memory, addr, mode, flags);
1446 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1447 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1449 set_store(load_mem);
1451 ir_mode *const mode_arithmetic = get_ir_mode_arithmetic(type);
1452 return create_conv(dbgi, load_res, mode_arithmetic);
1456 * Creates a strict Conv (to the node's mode) if necessary.
1458 * @param dbgi debug info
1459 * @param node the node to strict conv
1461 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1463 ir_mode *mode = get_irn_mode(node);
1465 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1467 if (!mode_is_float(mode))
1470 /* check if there is already a Conv */
1471 if (is_Conv(node)) {
1472 /* convert it into a strict Conv */
1473 set_Conv_strict(node, 1);
1477 /* otherwise create a new one */
1478 return new_d_strictConv(dbgi, node, mode);
1482 * Returns the address of a global variable.
1484 * @param dbgi debug info
1485 * @param variable the variable
1487 static ir_node *get_global_var_address(dbg_info *const dbgi,
1488 const variable_t *const variable)
1490 ir_entity *const irentity = variable->v.entity;
1491 if (variable->thread_local) {
1492 ir_node *const no_mem = new_NoMem();
1493 ir_node *const tls = get_irg_tls(current_ir_graph);
1494 return new_d_simpleSel(dbgi, no_mem, tls, irentity);
1496 return create_symconst(dbgi, mode_P_data, irentity);
1501 * Returns the correct base address depending on whether it is a parameter or a
1502 * normal local variable.
1504 static ir_node *get_local_frame(ir_entity *const ent)
1506 ir_graph *const irg = current_ir_graph;
1507 const ir_type *const owner = get_entity_owner(ent);
1508 if (owner == current_outer_frame || owner == current_outer_value_type) {
1509 assert(current_static_link != NULL);
1510 return current_static_link;
1512 return get_irg_frame(irg);
1517 * Keep all memory edges of the given block.
1519 static void keep_all_memory(ir_node *block)
1521 ir_node *old = get_cur_block();
1523 set_cur_block(block);
1524 keep_alive(get_store());
1525 /* TODO: keep all memory edges from restricted pointers */
1529 static ir_node *reference_expression_enum_value_to_firm(
1530 const reference_expression_t *ref)
1532 entity_t *entity = ref->entity;
1533 type_t *type = skip_typeref(entity->enum_value.enum_type);
1534 /* make sure the type is constructed */
1535 (void) get_ir_type(type);
1537 return new_Const(entity->enum_value.tv);
1540 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1542 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1543 entity_t *entity = ref->entity;
1544 assert(is_declaration(entity));
1545 type_t *type = skip_typeref(entity->declaration.type);
1547 /* make sure the type is constructed */
1548 (void) get_ir_type(type);
1550 if (entity->kind == ENTITY_FUNCTION && entity->function.btk != bk_none) {
1551 ir_entity *irentity = get_function_entity(entity, NULL);
1552 /* for gcc compatibility we have to produce (dummy) addresses for some
1553 * builtins which don't have entities */
1554 if (irentity == NULL) {
1555 if (warning.other) {
1556 warningf(&ref->base.source_position,
1557 "taking address of builtin '%Y'",
1558 ref->entity->base.symbol);
1561 /* simply create a NULL pointer */
1562 ir_mode *mode = get_ir_mode_arithmetic(type_void_ptr);
1563 ir_node *res = new_Const_long(mode, 0);
1569 switch ((declaration_kind_t) entity->declaration.kind) {
1570 case DECLARATION_KIND_UNKNOWN:
1573 case DECLARATION_KIND_LOCAL_VARIABLE: {
1574 ir_mode *const mode = get_ir_mode_storage(type);
1575 ir_node *const value = get_value(entity->variable.v.value_number, mode);
1576 return create_conv(NULL, value, get_ir_mode_arithmetic(type));
1578 case DECLARATION_KIND_PARAMETER: {
1579 ir_mode *const mode = get_ir_mode_storage(type);
1580 ir_node *const value = get_value(entity->parameter.v.value_number,mode);
1581 return create_conv(NULL, value, get_ir_mode_arithmetic(type));
1583 case DECLARATION_KIND_FUNCTION: {
1584 ir_mode *const mode = get_ir_mode_storage(type);
1585 return create_symconst(dbgi, mode, entity->function.irentity);
1587 case DECLARATION_KIND_INNER_FUNCTION: {
1588 ir_mode *const mode = get_ir_mode_storage(type);
1589 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1590 /* inner function not using the closure */
1591 return create_symconst(dbgi, mode, entity->function.irentity);
1593 /* need trampoline here */
1594 return create_trampoline(dbgi, mode, entity->function.irentity);
1597 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1598 const variable_t *variable = &entity->variable;
1599 ir_node *const addr = get_global_var_address(dbgi, variable);
1600 return deref_address(dbgi, variable->base.type, addr);
1603 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1604 ir_entity *irentity = entity->variable.v.entity;
1605 ir_node *frame = get_local_frame(irentity);
1606 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1607 return deref_address(dbgi, entity->declaration.type, sel);
1609 case DECLARATION_KIND_PARAMETER_ENTITY: {
1610 ir_entity *irentity = entity->parameter.v.entity;
1611 ir_node *frame = get_local_frame(irentity);
1612 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1613 return deref_address(dbgi, entity->declaration.type, sel);
1616 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1617 return entity->variable.v.vla_base;
1619 case DECLARATION_KIND_COMPOUND_MEMBER:
1620 panic("not implemented reference type");
1623 panic("reference to declaration with unknown type found");
1626 static ir_node *reference_addr(const reference_expression_t *ref)
1628 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1629 entity_t *entity = ref->entity;
1630 assert(is_declaration(entity));
1632 switch((declaration_kind_t) entity->declaration.kind) {
1633 case DECLARATION_KIND_UNKNOWN:
1635 case DECLARATION_KIND_PARAMETER:
1636 case DECLARATION_KIND_LOCAL_VARIABLE:
1637 /* you can store to a local variable (so we don't panic but return NULL
1638 * as an indicator for no real address) */
1640 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1641 ir_node *const addr = get_global_var_address(dbgi, &entity->variable);
1644 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1645 ir_entity *irentity = entity->variable.v.entity;
1646 ir_node *frame = get_local_frame(irentity);
1647 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1651 case DECLARATION_KIND_PARAMETER_ENTITY: {
1652 ir_entity *irentity = entity->parameter.v.entity;
1653 ir_node *frame = get_local_frame(irentity);
1654 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1659 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1660 return entity->variable.v.vla_base;
1662 case DECLARATION_KIND_FUNCTION: {
1663 type_t *const type = skip_typeref(entity->declaration.type);
1664 ir_mode *const mode = get_ir_mode_storage(type);
1665 return create_symconst(dbgi, mode, entity->function.irentity);
1668 case DECLARATION_KIND_INNER_FUNCTION: {
1669 type_t *const type = skip_typeref(entity->declaration.type);
1670 ir_mode *const mode = get_ir_mode_storage(type);
1671 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1672 /* inner function not using the closure */
1673 return create_symconst(dbgi, mode, entity->function.irentity);
1675 /* need trampoline here */
1676 return create_trampoline(dbgi, mode, entity->function.irentity);
1680 case DECLARATION_KIND_COMPOUND_MEMBER:
1681 panic("not implemented reference type");
1684 panic("reference to declaration with unknown type found");
1688 * Generate an unary builtin.
1690 * @param kind the builtin kind to generate
1691 * @param op the operand
1692 * @param function_type the function type for the GNU builtin routine
1693 * @param db debug info
1695 static ir_node *gen_unary_builtin(ir_builtin_kind kind, expression_t *op, type_t *function_type, dbg_info *db)
1698 in[0] = expression_to_firm(op);
1700 ir_type *tp = get_ir_type(function_type);
1701 ir_type *res = get_method_res_type(tp, 0);
1702 ir_node *irn = new_d_Builtin(db, get_irg_no_mem(current_ir_graph), 1, in, kind, tp);
1703 set_irn_pinned(irn, op_pin_state_floats);
1704 return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result);
1708 * Generate a pinned unary builtin.
1710 * @param kind the builtin kind to generate
1711 * @param op the operand
1712 * @param function_type the function type for the GNU builtin routine
1713 * @param db debug info
1715 static ir_node *gen_unary_builtin_pinned(ir_builtin_kind kind, expression_t *op,
1716 type_t *function_type, dbg_info *db)
1719 in[0] = expression_to_firm(op);
1721 ir_type *tp = get_ir_type(function_type);
1722 ir_type *res = get_method_res_type(tp, 0);
1723 ir_node *mem = get_store();
1724 ir_node *irn = new_d_Builtin(db, mem, 1, in, kind, tp);
1725 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1726 return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result);
1730 * Generate an binary-void-return builtin.
1732 * @param kind the builtin kind to generate
1733 * @param op1 the first operand
1734 * @param op2 the second operand
1735 * @param function_type the function type for the GNU builtin routine
1736 * @param db debug info
1738 static ir_node *gen_binary_builtin_mem(ir_builtin_kind kind, expression_t *op1,
1739 expression_t *op2, type_t *function_type,
1743 in[0] = expression_to_firm(op1);
1744 in[1] = expression_to_firm(op2);
1746 ir_type *tp = get_ir_type(function_type);
1747 ir_node *mem = get_store();
1748 ir_node *irn = new_d_Builtin(db, mem, 2, in, kind, tp);
1749 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1754 * Transform calls to builtin functions.
1756 static ir_node *process_builtin_call(const call_expression_t *call)
1758 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1760 assert(call->function->kind == EXPR_REFERENCE);
1761 reference_expression_t *builtin = &call->function->reference;
1763 type_t *type = skip_typeref(builtin->base.type);
1764 assert(is_type_pointer(type));
1766 type_t *function_type = skip_typeref(type->pointer.points_to);
1768 switch (builtin->entity->function.btk) {
1769 case bk_gnu_builtin_alloca: {
1770 if (call->arguments == NULL || call->arguments->next != NULL) {
1771 panic("invalid number of parameters on __builtin_alloca");
1773 expression_t *argument = call->arguments->expression;
1774 ir_node *size = expression_to_firm(argument);
1776 ir_node *store = get_store();
1777 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1779 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1781 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1786 case bk_gnu_builtin_huge_val:
1787 case bk_gnu_builtin_huge_valf:
1788 case bk_gnu_builtin_huge_vall:
1789 case bk_gnu_builtin_inf:
1790 case bk_gnu_builtin_inff:
1791 case bk_gnu_builtin_infl: {
1792 type_t *type = function_type->function.return_type;
1793 ir_mode *mode = get_ir_mode_arithmetic(type);
1794 tarval *tv = get_mode_infinite(mode);
1795 ir_node *res = new_d_Const(dbgi, tv);
1798 case bk_gnu_builtin_nan:
1799 case bk_gnu_builtin_nanf:
1800 case bk_gnu_builtin_nanl: {
1801 /* Ignore string for now... */
1802 assert(is_type_function(function_type));
1803 type_t *type = function_type->function.return_type;
1804 ir_mode *mode = get_ir_mode_arithmetic(type);
1805 tarval *tv = get_mode_NAN(mode);
1806 ir_node *res = new_d_Const(dbgi, tv);
1809 case bk_gnu_builtin_expect: {
1810 expression_t *argument = call->arguments->expression;
1811 return _expression_to_firm(argument);
1813 case bk_gnu_builtin_va_end:
1814 /* evaluate the argument of va_end for its side effects */
1815 _expression_to_firm(call->arguments->expression);
1817 case bk_gnu_builtin_frame_address: {
1818 expression_t *const expression = call->arguments->expression;
1819 bool val = fold_constant_to_bool(expression);
1822 return get_irg_frame(current_ir_graph);
1824 /* get the argument */
1827 in[0] = expression_to_firm(expression);
1828 in[1] = get_irg_frame(current_ir_graph);
1829 ir_type *tp = get_ir_type(function_type);
1830 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_frame_address, tp);
1831 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1834 case bk_gnu_builtin_return_address: {
1836 expression_t *const expression = call->arguments->expression;
1839 in[0] = expression_to_firm(expression);
1840 in[1] = get_irg_frame(current_ir_graph);
1841 ir_type *tp = get_ir_type(function_type);
1842 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_return_address, tp);
1843 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1845 case bk_gnu_builtin_ffs:
1846 return gen_unary_builtin(ir_bk_ffs, call->arguments->expression, function_type, dbgi);
1847 case bk_gnu_builtin_clz:
1848 return gen_unary_builtin(ir_bk_clz, call->arguments->expression, function_type, dbgi);
1849 case bk_gnu_builtin_ctz:
1850 return gen_unary_builtin(ir_bk_ctz, call->arguments->expression, function_type, dbgi);
1851 case bk_gnu_builtin_popcount:
1852 case bk_ms__popcount:
1853 return gen_unary_builtin(ir_bk_popcount, call->arguments->expression, function_type, dbgi);
1854 case bk_gnu_builtin_parity:
1855 return gen_unary_builtin(ir_bk_parity, call->arguments->expression, function_type, dbgi);
1856 case bk_gnu_builtin_prefetch: {
1857 call_argument_t *const args = call->arguments;
1858 expression_t *const addr = args->expression;
1861 in[0] = _expression_to_firm(addr);
1862 if (args->next != NULL) {
1863 expression_t *const rw = args->next->expression;
1865 in[1] = _expression_to_firm(rw);
1867 if (args->next->next != NULL) {
1868 expression_t *const locality = args->next->next->expression;
1870 in[2] = expression_to_firm(locality);
1872 in[2] = new_Const_long(mode_int, 3);
1875 in[1] = new_Const_long(mode_int, 0);
1876 in[2] = new_Const_long(mode_int, 3);
1878 ir_type *tp = get_ir_type(function_type);
1879 ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_prefetch, tp);
1880 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1883 case bk_gnu_builtin_trap:
1886 ir_type *tp = get_ir_type(function_type);
1887 ir_node *irn = new_d_Builtin(dbgi, get_store(), 0, NULL, ir_bk_trap, tp);
1888 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1891 case bk_ms__debugbreak: {
1892 ir_type *tp = get_ir_type(function_type);
1893 ir_node *irn = new_d_Builtin(dbgi, get_store(), 0, NULL, ir_bk_debugbreak, tp);
1894 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1897 case bk_ms_ReturnAddress: {
1900 in[0] = new_Const_long(mode_int, 0);
1901 in[1] = get_irg_frame(current_ir_graph);
1902 ir_type *tp = get_ir_type(function_type);
1903 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_return_address, tp);
1904 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1907 case bk_ms_rotl64: {
1908 ir_node *val = expression_to_firm(call->arguments->expression);
1909 ir_node *shf = expression_to_firm(call->arguments->next->expression);
1910 ir_mode *mode = get_irn_mode(val);
1911 return new_d_Rotl(dbgi, val, create_conv(dbgi, shf, mode_uint), mode);
1914 case bk_ms_rotr64: {
1915 ir_node *val = expression_to_firm(call->arguments->expression);
1916 ir_node *shf = expression_to_firm(call->arguments->next->expression);
1917 ir_mode *mode = get_irn_mode(val);
1918 ir_node *c = new_Const_long(mode_uint, get_mode_size_bits(mode));
1919 ir_node *sub = new_d_Sub(dbgi, c, create_conv(dbgi, shf, mode_uint), mode_uint);
1920 return new_d_Rotl(dbgi, val, sub, mode);
1922 case bk_ms_byteswap_ushort:
1923 case bk_ms_byteswap_ulong:
1924 case bk_ms_byteswap_uint64:
1925 return gen_unary_builtin(ir_bk_bswap, call->arguments->expression, function_type, dbgi);
1928 case bk_ms__indword:
1929 return gen_unary_builtin_pinned(ir_bk_inport, call->arguments->expression, function_type, dbgi);
1930 case bk_ms__outbyte:
1931 case bk_ms__outword:
1932 case bk_ms__outdword:
1933 return gen_binary_builtin_mem(ir_bk_outport, call->arguments->expression,
1934 call->arguments->next->expression, function_type, dbgi);
1936 panic("unsupported builtin found");
1941 * Transform a call expression.
1942 * Handles some special cases, like alloca() calls, which must be resolved
1943 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1944 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1947 static ir_node *call_expression_to_firm(const call_expression_t *const call)
1949 dbg_info *const dbgi = get_dbg_info(&call->base.source_position);
1950 assert(get_cur_block() != NULL);
1952 expression_t *function = call->function;
1953 if (function->kind == EXPR_REFERENCE) {
1954 const reference_expression_t *ref = &function->reference;
1955 entity_t *entity = ref->entity;
1957 if (entity->kind == ENTITY_FUNCTION) {
1958 ir_entity *irentity = entity->function.irentity;
1959 if (irentity == NULL)
1960 irentity = get_function_entity(entity, NULL);
1962 if (irentity == NULL && entity->function.btk != bk_none) {
1963 return process_builtin_call(call);
1966 if (irentity == rts_entities[rts_alloca]) {
1967 /* handle alloca() call */
1968 expression_t *argument = call->arguments->expression;
1969 ir_node *size = expression_to_firm(argument);
1970 ir_mode *mode = get_ir_mode_arithmetic(type_size_t);
1972 size = create_conv(dbgi, size, mode);
1974 ir_node *store = get_store();
1975 ir_node *alloca = new_d_Alloc(dbgi, store, size,
1976 firm_unknown_type, stack_alloc);
1977 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1979 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1985 ir_node *callee = expression_to_firm(function);
1987 type_t *type = skip_typeref(function->base.type);
1988 assert(is_type_pointer(type));
1989 pointer_type_t *pointer_type = &type->pointer;
1990 type_t *points_to = skip_typeref(pointer_type->points_to);
1991 assert(is_type_function(points_to));
1992 function_type_t *function_type = &points_to->function;
1994 int n_parameters = 0;
1995 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1996 ir_type *new_method_type = NULL;
1997 if (function_type->variadic || function_type->unspecified_parameters) {
1998 const call_argument_t *argument = call->arguments;
1999 for ( ; argument != NULL; argument = argument->next) {
2003 /* we need to construct a new method type matching the call
2005 type_dbg_info *tdbgi = get_type_dbg_info_((const type_t*) function_type);
2006 int n_res = get_method_n_ress(ir_method_type);
2007 new_method_type = new_d_type_method(n_parameters, n_res, tdbgi);
2008 set_method_calling_convention(new_method_type,
2009 get_method_calling_convention(ir_method_type));
2010 set_method_additional_properties(new_method_type,
2011 get_method_additional_properties(ir_method_type));
2012 set_method_variadicity(new_method_type,
2013 get_method_variadicity(ir_method_type));
2015 for (int i = 0; i < n_res; ++i) {
2016 set_method_res_type(new_method_type, i,
2017 get_method_res_type(ir_method_type, i));
2019 argument = call->arguments;
2020 for (int i = 0; i < n_parameters; ++i, argument = argument->next) {
2021 expression_t *expression = argument->expression;
2022 ir_type *irtype = get_ir_type(expression->base.type);
2023 set_method_param_type(new_method_type, i, irtype);
2025 ir_method_type = new_method_type;
2027 n_parameters = get_method_n_params(ir_method_type);
2030 ir_node *in[n_parameters];
2032 const call_argument_t *argument = call->arguments;
2033 for (int n = 0; n < n_parameters; ++n) {
2034 expression_t *expression = argument->expression;
2035 ir_node *arg_node = expression_to_firm(expression);
2037 type_t *type = skip_typeref(expression->base.type);
2038 if (!is_type_compound(type)) {
2039 ir_mode *mode = get_ir_mode_storage(expression->base.type);
2040 arg_node = create_conv(dbgi, arg_node, mode);
2041 arg_node = do_strict_conv(dbgi, arg_node);
2046 argument = argument->next;
2049 ir_node *store = get_store();
2050 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
2052 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M);
2055 type_t *return_type = skip_typeref(function_type->return_type);
2056 ir_node *result = NULL;
2058 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
2059 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
2061 if (is_type_scalar(return_type)) {
2062 ir_mode *mode = get_ir_mode_storage(return_type);
2063 result = new_d_Proj(dbgi, resproj, mode, 0);
2064 ir_mode *mode_arith = get_ir_mode_arithmetic(return_type);
2065 result = create_conv(NULL, result, mode_arith);
2067 ir_mode *mode = mode_P_data;
2068 result = new_d_Proj(dbgi, resproj, mode, 0);
2072 if (function->kind == EXPR_REFERENCE &&
2073 function->reference.entity->declaration.modifiers & DM_NORETURN) {
2074 /* A dead end: Keep the Call and the Block. Also place all further
2075 * nodes into a new and unreachable block. */
2077 keep_alive(get_cur_block());
2078 ir_node *block = new_Block(0, NULL);
2079 set_cur_block(block);
2085 static void statement_to_firm(statement_t *statement);
2086 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
2088 static ir_node *expression_to_addr(const expression_t *expression);
2089 static ir_node *create_condition_evaluation(const expression_t *expression,
2090 ir_node *true_block,
2091 ir_node *false_block);
2093 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
2096 if (!is_type_compound(type)) {
2097 ir_mode *mode = get_ir_mode_storage(type);
2098 value = create_conv(dbgi, value, mode);
2099 value = do_strict_conv(dbgi, value);
2102 ir_node *memory = get_store();
2104 if (is_type_scalar(type)) {
2105 ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
2106 ? cons_volatile : cons_none;
2107 ir_node *store = new_d_Store(dbgi, memory, addr, value, flags);
2108 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
2109 set_store(store_mem);
2111 ir_type *irtype = get_ir_type(type);
2112 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
2113 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
2114 set_store(copyb_mem);
2118 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
2120 tarval *all_one = get_mode_all_one(mode);
2121 int mode_size = get_mode_size_bits(mode);
2123 assert(offset >= 0);
2125 assert(offset + size <= mode_size);
2126 if (size == mode_size) {
2130 long shiftr = get_mode_size_bits(mode) - size;
2131 long shiftl = offset;
2132 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
2133 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
2134 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
2135 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
2140 static ir_node *bitfield_store_to_firm(dbg_info *dbgi,
2141 ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile)
2143 ir_type *entity_type = get_entity_type(entity);
2144 ir_type *base_type = get_primitive_base_type(entity_type);
2145 assert(base_type != NULL);
2146 ir_mode *mode = get_type_mode(base_type);
2148 value = create_conv(dbgi, value, mode);
2150 /* kill upper bits of value and shift to right position */
2151 int bitoffset = get_entity_offset_bits_remainder(entity);
2152 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
2154 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
2155 ir_node *mask_node = new_d_Const(dbgi, mask);
2156 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
2157 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
2158 ir_node *shiftcount = new_d_Const(dbgi, shiftl);
2159 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
2161 /* load current value */
2162 ir_node *mem = get_store();
2163 ir_node *load = new_d_Load(dbgi, mem, addr, mode,
2164 set_volatile ? cons_volatile : cons_none);
2165 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
2166 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
2167 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
2168 tarval *inv_mask = tarval_not(shift_mask);
2169 ir_node *inv_mask_node = new_d_Const(dbgi, inv_mask);
2170 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
2172 /* construct new value and store */
2173 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
2174 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val,
2175 set_volatile ? cons_volatile : cons_none);
2176 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
2177 set_store(store_mem);
2179 return value_masked;
2182 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
2185 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2186 type_t *type = expression->base.type;
2187 ir_mode *mode = get_ir_mode_storage(type);
2188 ir_node *mem = get_store();
2189 ir_node *load = new_d_Load(dbgi, mem, addr, mode, cons_none);
2190 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
2191 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
2193 load_res = create_conv(dbgi, load_res, mode_int);
2195 set_store(load_mem);
2197 /* kill upper bits */
2198 assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER);
2199 ir_entity *entity = expression->compound_entry->compound_member.entity;
2200 int bitoffset = get_entity_offset_bits_remainder(entity);
2201 ir_type *entity_type = get_entity_type(entity);
2202 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
2203 long shift_bitsl = machine_size - bitoffset - bitsize;
2204 assert(shift_bitsl >= 0);
2205 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
2206 ir_node *countl = new_d_Const(dbgi, tvl);
2207 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
2209 long shift_bitsr = bitoffset + shift_bitsl;
2210 assert(shift_bitsr <= (long) machine_size);
2211 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
2212 ir_node *countr = new_d_Const(dbgi, tvr);
2214 if (mode_is_signed(mode)) {
2215 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
2217 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
2220 return create_conv(dbgi, shiftr, mode);
2223 /* make sure the selected compound type is constructed */
2224 static void construct_select_compound(const select_expression_t *expression)
2226 type_t *type = skip_typeref(expression->compound->base.type);
2227 if (is_type_pointer(type)) {
2228 type = type->pointer.points_to;
2230 (void) get_ir_type(type);
2233 static ir_node *set_value_for_expression_addr(const expression_t *expression,
2234 ir_node *value, ir_node *addr)
2236 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2237 type_t *type = skip_typeref(expression->base.type);
2239 if (!is_type_compound(type)) {
2240 ir_mode *mode = get_ir_mode_storage(type);
2241 value = create_conv(dbgi, value, mode);
2242 value = do_strict_conv(dbgi, value);
2245 if (expression->kind == EXPR_REFERENCE) {
2246 const reference_expression_t *ref = &expression->reference;
2248 entity_t *entity = ref->entity;
2249 assert(is_declaration(entity));
2250 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2251 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2252 set_value(entity->variable.v.value_number, value);
2254 } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2255 set_value(entity->parameter.v.value_number, value);
2261 addr = expression_to_addr(expression);
2262 assert(addr != NULL);
2264 if (expression->kind == EXPR_SELECT) {
2265 const select_expression_t *select = &expression->select;
2267 construct_select_compound(select);
2269 entity_t *entity = select->compound_entry;
2270 assert(entity->kind == ENTITY_COMPOUND_MEMBER);
2271 if (entity->declaration.type->kind == TYPE_BITFIELD) {
2272 ir_entity *irentity = entity->compound_member.entity;
2274 = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
2275 value = bitfield_store_to_firm(dbgi, irentity, addr, value,
2281 assign_value(dbgi, addr, type, value);
2285 static void set_value_for_expression(const expression_t *expression,
2288 set_value_for_expression_addr(expression, value, NULL);
2291 static ir_node *get_value_from_lvalue(const expression_t *expression,
2294 if (expression->kind == EXPR_REFERENCE) {
2295 const reference_expression_t *ref = &expression->reference;
2297 entity_t *entity = ref->entity;
2298 assert(entity->kind == ENTITY_VARIABLE
2299 || entity->kind == ENTITY_PARAMETER);
2300 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2302 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2303 value_number = entity->variable.v.value_number;
2304 assert(addr == NULL);
2305 type_t *type = skip_typeref(expression->base.type);
2306 ir_mode *mode = get_ir_mode_storage(type);
2307 ir_node *res = get_value(value_number, mode);
2308 return create_conv(NULL, res, get_ir_mode_arithmetic(type));
2309 } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2310 value_number = entity->parameter.v.value_number;
2311 assert(addr == NULL);
2312 type_t *type = skip_typeref(expression->base.type);
2313 ir_mode *mode = get_ir_mode_storage(type);
2314 ir_node *res = get_value(value_number, mode);
2315 return create_conv(NULL, res, get_ir_mode_arithmetic(type));
2319 assert(addr != NULL);
2320 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2323 if (expression->kind == EXPR_SELECT &&
2324 expression->select.compound_entry->declaration.type->kind == TYPE_BITFIELD){
2325 construct_select_compound(&expression->select);
2326 value = bitfield_extract_to_firm(&expression->select, addr);
2328 value = deref_address(dbgi, expression->base.type, addr);
2335 static ir_node *create_incdec(const unary_expression_t *expression)
2337 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2338 const expression_t *value_expr = expression->value;
2339 ir_node *addr = expression_to_addr(value_expr);
2340 ir_node *value = get_value_from_lvalue(value_expr, addr);
2342 type_t *type = skip_typeref(expression->base.type);
2343 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2346 if (is_type_pointer(type)) {
2347 pointer_type_t *pointer_type = &type->pointer;
2348 offset = get_type_size_node(pointer_type->points_to);
2350 assert(is_type_arithmetic(type));
2351 offset = new_Const(get_mode_one(mode));
2355 ir_node *store_value;
2356 switch(expression->base.kind) {
2357 case EXPR_UNARY_POSTFIX_INCREMENT:
2359 store_value = new_d_Add(dbgi, value, offset, mode);
2361 case EXPR_UNARY_POSTFIX_DECREMENT:
2363 store_value = new_d_Sub(dbgi, value, offset, mode);
2365 case EXPR_UNARY_PREFIX_INCREMENT:
2366 result = new_d_Add(dbgi, value, offset, mode);
2367 store_value = result;
2369 case EXPR_UNARY_PREFIX_DECREMENT:
2370 result = new_d_Sub(dbgi, value, offset, mode);
2371 store_value = result;
2374 panic("no incdec expr in create_incdec");
2377 set_value_for_expression_addr(value_expr, store_value, addr);
2382 static bool is_local_variable(expression_t *expression)
2384 if (expression->kind != EXPR_REFERENCE)
2386 reference_expression_t *ref_expr = &expression->reference;
2387 entity_t *entity = ref_expr->entity;
2388 if (entity->kind != ENTITY_VARIABLE)
2390 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2391 return entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE;
2394 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
2397 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
2398 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
2399 case EXPR_BINARY_NOTEQUAL:
2400 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
2401 case EXPR_BINARY_ISLESS:
2402 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
2403 case EXPR_BINARY_ISLESSEQUAL:
2404 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
2405 case EXPR_BINARY_ISGREATER:
2406 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
2407 case EXPR_BINARY_ISGREATEREQUAL:
2408 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
2409 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
2414 panic("trying to get pn_Cmp from non-comparison binexpr type");
2418 * Handle the assume optimizer hint: check if a Confirm
2419 * node can be created.
2421 * @param dbi debug info
2422 * @param expr the IL assume expression
2424 * we support here only some simple cases:
2429 static ir_node *handle_assume_compare(dbg_info *dbi,
2430 const binary_expression_t *expression)
2432 expression_t *op1 = expression->left;
2433 expression_t *op2 = expression->right;
2434 entity_t *var2, *var = NULL;
2435 ir_node *res = NULL;
2438 cmp_val = get_pnc(expression->base.kind, op1->base.type);
2440 if (is_local_variable(op1) && is_local_variable(op2)) {
2441 var = op1->reference.entity;
2442 var2 = op2->reference.entity;
2444 type_t *const type = skip_typeref(var->declaration.type);
2445 ir_mode *const mode = get_ir_mode_storage(type);
2447 ir_node *const irn1 = get_value(var->variable.v.value_number, mode);
2448 ir_node *const irn2 = get_value(var2->variable.v.value_number, mode);
2450 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
2451 set_value(var2->variable.v.value_number, res);
2453 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
2454 set_value(var->variable.v.value_number, res);
2460 if (is_local_variable(op1) && is_constant_expression(op2)) {
2461 var = op1->reference.entity;
2463 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2464 cmp_val = get_inversed_pnc(cmp_val);
2465 var = op2->reference.entity;
2470 type_t *const type = skip_typeref(var->declaration.type);
2471 ir_mode *const mode = get_ir_mode_storage(type);
2473 res = get_value(var->variable.v.value_number, mode);
2474 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2475 set_value(var->variable.v.value_number, res);
2481 * Handle the assume optimizer hint.
2483 * @param dbi debug info
2484 * @param expr the IL assume expression
2486 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression)
2488 switch(expression->kind) {
2489 case EXPR_BINARY_EQUAL:
2490 case EXPR_BINARY_NOTEQUAL:
2491 case EXPR_BINARY_LESS:
2492 case EXPR_BINARY_LESSEQUAL:
2493 case EXPR_BINARY_GREATER:
2494 case EXPR_BINARY_GREATEREQUAL:
2495 return handle_assume_compare(dbi, &expression->binary);
2501 static ir_node *create_cast(dbg_info *dbgi, ir_node *value_node,
2502 type_t *from_type, type_t *type)
2504 type = skip_typeref(type);
2505 if (!is_type_scalar(type)) {
2506 /* make sure firm type is constructed */
2507 (void) get_ir_type(type);
2511 from_type = skip_typeref(from_type);
2512 ir_mode *mode = get_ir_mode_storage(type);
2513 /* check for conversion from / to __based types */
2514 if (is_type_pointer(type) && is_type_pointer(from_type)) {
2515 const variable_t *from_var = from_type->pointer.base_variable;
2516 const variable_t *to_var = type->pointer.base_variable;
2517 if (from_var != to_var) {
2518 if (from_var != NULL) {
2519 ir_node *const addr = get_global_var_address(dbgi, from_var);
2520 ir_node *const base = deref_address(dbgi, from_var->base.type, addr);
2521 value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(from_type));
2523 if (to_var != NULL) {
2524 ir_node *const addr = get_global_var_address(dbgi, to_var);
2525 ir_node *const base = deref_address(dbgi, to_var->base.type, addr);
2526 value_node = new_d_Sub(dbgi, value_node, base, mode);
2531 if (is_type_atomic(type, ATOMIC_TYPE_BOOL)) {
2532 /* bool adjustments (we save a mode_Bu, but have to temporarily
2533 * convert to mode_b so we only get a 0/1 value */
2534 value_node = create_conv(dbgi, value_node, mode_b);
2537 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
2538 ir_node *node = create_conv(dbgi, value_node, mode);
2539 node = do_strict_conv(dbgi, node);
2540 node = create_conv(dbgi, node, mode_arith);
2545 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2547 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2548 type_t *type = skip_typeref(expression->base.type);
2550 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2551 return expression_to_addr(expression->value);
2553 const expression_t *value = expression->value;
2555 switch(expression->base.kind) {
2556 case EXPR_UNARY_NEGATE: {
2557 ir_node *value_node = expression_to_firm(value);
2558 ir_mode *mode = get_ir_mode_arithmetic(type);
2559 return new_d_Minus(dbgi, value_node, mode);
2561 case EXPR_UNARY_PLUS:
2562 return expression_to_firm(value);
2563 case EXPR_UNARY_BITWISE_NEGATE: {
2564 ir_node *value_node = expression_to_firm(value);
2565 ir_mode *mode = get_ir_mode_arithmetic(type);
2566 return new_d_Not(dbgi, value_node, mode);
2568 case EXPR_UNARY_NOT: {
2569 ir_node *value_node = _expression_to_firm(value);
2570 value_node = create_conv(dbgi, value_node, mode_b);
2571 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2574 case EXPR_UNARY_DEREFERENCE: {
2575 ir_node *value_node = expression_to_firm(value);
2576 type_t *value_type = skip_typeref(value->base.type);
2577 assert(is_type_pointer(value_type));
2579 /* check for __based */
2580 const variable_t *const base_var = value_type->pointer.base_variable;
2581 if (base_var != NULL) {
2582 ir_node *const addr = get_global_var_address(dbgi, base_var);
2583 ir_node *const base = deref_address(dbgi, base_var->base.type, addr);
2584 value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(value_type));
2586 type_t *points_to = value_type->pointer.points_to;
2587 return deref_address(dbgi, points_to, value_node);
2589 case EXPR_UNARY_POSTFIX_INCREMENT:
2590 case EXPR_UNARY_POSTFIX_DECREMENT:
2591 case EXPR_UNARY_PREFIX_INCREMENT:
2592 case EXPR_UNARY_PREFIX_DECREMENT:
2593 return create_incdec(expression);
2594 case EXPR_UNARY_CAST_IMPLICIT:
2595 case EXPR_UNARY_CAST: {
2596 ir_node *value_node = expression_to_firm(value);
2597 type_t *from_type = value->base.type;
2598 return create_cast(dbgi, value_node, from_type, type);
2600 case EXPR_UNARY_ASSUME:
2601 if (firm_opt.confirm)
2602 return handle_assume(dbgi, value);
2609 panic("invalid UNEXPR type found");
2613 * produces a 0/1 depending of the value of a mode_b node
2615 static ir_node *produce_condition_result(const expression_t *expression,
2616 ir_mode *mode, dbg_info *dbgi)
2618 ir_node *cur_block = get_cur_block();
2620 ir_node *one_block = new_immBlock();
2621 set_cur_block(one_block);
2622 ir_node *one = new_Const(get_mode_one(mode));
2623 ir_node *jmp_one = new_d_Jmp(dbgi);
2625 ir_node *zero_block = new_immBlock();
2626 set_cur_block(zero_block);
2627 ir_node *zero = new_Const(get_mode_null(mode));
2628 ir_node *jmp_zero = new_d_Jmp(dbgi);
2630 set_cur_block(cur_block);
2631 create_condition_evaluation(expression, one_block, zero_block);
2632 mature_immBlock(one_block);
2633 mature_immBlock(zero_block);
2635 ir_node *in_cf[2] = { jmp_one, jmp_zero };
2636 ir_node *block = new_Block(2, in_cf);
2637 set_cur_block(block);
2639 ir_node *in[2] = { one, zero };
2640 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2645 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2646 ir_node *value, type_t *type)
2648 ir_mode *const mode = get_ir_mode_arithmetic(type_ptrdiff_t);
2649 assert(is_type_pointer(type));
2650 pointer_type_t *const pointer_type = &type->pointer;
2651 type_t *const points_to = skip_typeref(pointer_type->points_to);
2652 ir_node * elem_size = get_type_size_node(points_to);
2653 elem_size = create_conv(dbgi, elem_size, mode);
2654 value = create_conv(dbgi, value, mode);
2655 ir_node *const mul = new_d_Mul(dbgi, value, elem_size, mode);
2659 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2660 ir_node *left, ir_node *right)
2663 type_t *type_left = skip_typeref(expression->left->base.type);
2664 type_t *type_right = skip_typeref(expression->right->base.type);
2666 expression_kind_t kind = expression->base.kind;
2669 case EXPR_BINARY_SHIFTLEFT:
2670 case EXPR_BINARY_SHIFTRIGHT:
2671 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2672 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2673 mode = get_irn_mode(left);
2674 right = create_conv(dbgi, right, mode_uint);
2677 case EXPR_BINARY_SUB:
2678 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2679 const pointer_type_t *const ptr_type = &type_left->pointer;
2681 mode = get_ir_mode_arithmetic(expression->base.type);
2682 ir_node *const elem_size = get_type_size_node(ptr_type->points_to);
2683 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2684 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2685 ir_node *const no_mem = new_NoMem();
2686 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2687 mode, op_pin_state_floats);
2688 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2691 case EXPR_BINARY_SUB_ASSIGN:
2692 if (is_type_pointer(type_left)) {
2693 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2694 mode = get_ir_mode_arithmetic(type_left);
2699 case EXPR_BINARY_ADD:
2700 case EXPR_BINARY_ADD_ASSIGN:
2701 if (is_type_pointer(type_left)) {
2702 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2703 mode = get_ir_mode_arithmetic(type_left);
2705 } else if (is_type_pointer(type_right)) {
2706 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2707 mode = get_ir_mode_arithmetic(type_right);
2714 mode = get_ir_mode_arithmetic(type_right);
2715 left = create_conv(dbgi, left, mode);
2720 case EXPR_BINARY_ADD_ASSIGN:
2721 case EXPR_BINARY_ADD:
2722 return new_d_Add(dbgi, left, right, mode);
2723 case EXPR_BINARY_SUB_ASSIGN:
2724 case EXPR_BINARY_SUB:
2725 return new_d_Sub(dbgi, left, right, mode);
2726 case EXPR_BINARY_MUL_ASSIGN:
2727 case EXPR_BINARY_MUL:
2728 return new_d_Mul(dbgi, left, right, mode);
2729 case EXPR_BINARY_BITWISE_AND:
2730 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2731 return new_d_And(dbgi, left, right, mode);
2732 case EXPR_BINARY_BITWISE_OR:
2733 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2734 return new_d_Or(dbgi, left, right, mode);
2735 case EXPR_BINARY_BITWISE_XOR:
2736 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2737 return new_d_Eor(dbgi, left, right, mode);
2738 case EXPR_BINARY_SHIFTLEFT:
2739 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2740 return new_d_Shl(dbgi, left, right, mode);
2741 case EXPR_BINARY_SHIFTRIGHT:
2742 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2743 if (mode_is_signed(mode)) {
2744 return new_d_Shrs(dbgi, left, right, mode);
2746 return new_d_Shr(dbgi, left, right, mode);
2748 case EXPR_BINARY_DIV:
2749 case EXPR_BINARY_DIV_ASSIGN: {
2750 ir_node *pin = new_Pin(new_NoMem());
2753 if (mode_is_float(mode)) {
2754 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2755 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2757 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2758 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2762 case EXPR_BINARY_MOD:
2763 case EXPR_BINARY_MOD_ASSIGN: {
2764 ir_node *pin = new_Pin(new_NoMem());
2765 assert(!mode_is_float(mode));
2766 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2767 op_pin_state_floats);
2768 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2772 panic("unexpected expression kind");
2776 static ir_node *create_lazy_op(const binary_expression_t *expression)
2778 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2779 type_t *type = skip_typeref(expression->base.type);
2780 ir_mode *mode = get_ir_mode_arithmetic(type);
2782 if (is_constant_expression(expression->left)) {
2783 bool val = fold_constant_to_bool(expression->left);
2784 expression_kind_t ekind = expression->base.kind;
2785 assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
2786 if (ekind == EXPR_BINARY_LOGICAL_AND) {
2788 return new_Const(get_mode_null(mode));
2792 return new_Const(get_mode_one(mode));
2796 if (is_constant_expression(expression->right)) {
2797 bool valr = fold_constant_to_bool(expression->right);
2799 new_Const(get_mode_one(mode)) :
2800 new_Const(get_mode_null(mode));
2803 return produce_condition_result(expression->right, mode, dbgi);
2806 return produce_condition_result((const expression_t*) expression, mode,
2810 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2811 ir_node *right, ir_mode *mode);
2813 static ir_node *create_assign_binop(const binary_expression_t *expression)
2815 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2816 const expression_t *left_expr = expression->left;
2817 type_t *type = skip_typeref(left_expr->base.type);
2818 ir_node *right = expression_to_firm(expression->right);
2819 ir_node *left_addr = expression_to_addr(left_expr);
2820 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2821 ir_node *result = create_op(dbgi, expression, left, right);
2823 result = create_cast(dbgi, result, expression->right->base.type, type);
2824 result = do_strict_conv(dbgi, result);
2826 result = set_value_for_expression_addr(left_expr, result, left_addr);
2828 if (!is_type_compound(type)) {
2829 ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
2830 result = create_conv(dbgi, result, mode_arithmetic);
2835 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2837 expression_kind_t kind = expression->base.kind;
2840 case EXPR_BINARY_EQUAL:
2841 case EXPR_BINARY_NOTEQUAL:
2842 case EXPR_BINARY_LESS:
2843 case EXPR_BINARY_LESSEQUAL:
2844 case EXPR_BINARY_GREATER:
2845 case EXPR_BINARY_GREATEREQUAL:
2846 case EXPR_BINARY_ISGREATER:
2847 case EXPR_BINARY_ISGREATEREQUAL:
2848 case EXPR_BINARY_ISLESS:
2849 case EXPR_BINARY_ISLESSEQUAL:
2850 case EXPR_BINARY_ISLESSGREATER:
2851 case EXPR_BINARY_ISUNORDERED: {
2852 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2853 ir_node *left = expression_to_firm(expression->left);
2854 ir_node *right = expression_to_firm(expression->right);
2855 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2856 long pnc = get_pnc(kind, expression->left->base.type);
2857 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2860 case EXPR_BINARY_ASSIGN: {
2861 ir_node *addr = expression_to_addr(expression->left);
2862 ir_node *right = expression_to_firm(expression->right);
2864 = set_value_for_expression_addr(expression->left, right, addr);
2866 type_t *type = skip_typeref(expression->base.type);
2867 if (!is_type_compound(type)) {
2868 ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
2869 res = create_conv(NULL, res, mode_arithmetic);
2873 case EXPR_BINARY_ADD:
2874 case EXPR_BINARY_SUB:
2875 case EXPR_BINARY_MUL:
2876 case EXPR_BINARY_DIV:
2877 case EXPR_BINARY_MOD:
2878 case EXPR_BINARY_BITWISE_AND:
2879 case EXPR_BINARY_BITWISE_OR:
2880 case EXPR_BINARY_BITWISE_XOR:
2881 case EXPR_BINARY_SHIFTLEFT:
2882 case EXPR_BINARY_SHIFTRIGHT:
2884 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2885 ir_node *left = expression_to_firm(expression->left);
2886 ir_node *right = expression_to_firm(expression->right);
2887 return create_op(dbgi, expression, left, right);
2889 case EXPR_BINARY_LOGICAL_AND:
2890 case EXPR_BINARY_LOGICAL_OR:
2891 return create_lazy_op(expression);
2892 case EXPR_BINARY_COMMA:
2893 /* create side effects of left side */
2894 (void) expression_to_firm(expression->left);
2895 return _expression_to_firm(expression->right);
2897 case EXPR_BINARY_ADD_ASSIGN:
2898 case EXPR_BINARY_SUB_ASSIGN:
2899 case EXPR_BINARY_MUL_ASSIGN:
2900 case EXPR_BINARY_MOD_ASSIGN:
2901 case EXPR_BINARY_DIV_ASSIGN:
2902 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2903 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2904 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2905 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2906 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2907 return create_assign_binop(expression);
2909 panic("TODO binexpr type");
2913 static ir_node *array_access_addr(const array_access_expression_t *expression)
2915 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2916 ir_node *base_addr = expression_to_firm(expression->array_ref);
2917 ir_node *offset = expression_to_firm(expression->index);
2918 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2919 ir_node *real_offset = adjust_for_pointer_arithmetic(dbgi, offset, ref_type);
2920 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2925 static ir_node *array_access_to_firm(
2926 const array_access_expression_t *expression)
2928 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2929 ir_node *addr = array_access_addr(expression);
2930 type_t *type = revert_automatic_type_conversion(
2931 (const expression_t*) expression);
2932 type = skip_typeref(type);
2934 return deref_address(dbgi, type, addr);
2937 static long get_offsetof_offset(const offsetof_expression_t *expression)
2939 type_t *orig_type = expression->type;
2942 designator_t *designator = expression->designator;
2943 for ( ; designator != NULL; designator = designator->next) {
2944 type_t *type = skip_typeref(orig_type);
2945 /* be sure the type is constructed */
2946 (void) get_ir_type(type);
2948 if (designator->symbol != NULL) {
2949 assert(is_type_compound(type));
2950 symbol_t *symbol = designator->symbol;
2952 compound_t *compound = type->compound.compound;
2953 entity_t *iter = compound->members.entities;
2954 for ( ; iter != NULL; iter = iter->base.next) {
2955 if (iter->base.symbol == symbol) {
2959 assert(iter != NULL);
2961 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
2962 assert(iter->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2963 offset += get_entity_offset(iter->compound_member.entity);
2965 orig_type = iter->declaration.type;
2967 expression_t *array_index = designator->array_index;
2968 assert(designator->array_index != NULL);
2969 assert(is_type_array(type));
2971 long index = fold_constant_to_int(array_index);
2972 ir_type *arr_type = get_ir_type(type);
2973 ir_type *elem_type = get_array_element_type(arr_type);
2974 long elem_size = get_type_size_bytes(elem_type);
2976 offset += index * elem_size;
2978 orig_type = type->array.element_type;
2985 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2987 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2988 long offset = get_offsetof_offset(expression);
2989 tarval *tv = new_tarval_from_long(offset, mode);
2990 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2992 return new_d_Const(dbgi, tv);
2995 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2996 ir_entity *entity, type_t *type);
2998 static ir_node *compound_literal_to_firm(
2999 const compound_literal_expression_t *expression)
3001 type_t *type = expression->type;
3003 /* create an entity on the stack */
3004 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3006 ident *const id = id_unique("CompLit.%u");
3007 ir_type *const irtype = get_ir_type(type);
3008 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
3009 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
3010 set_entity_ld_ident(entity, id);
3012 /* create initialisation code */
3013 initializer_t *initializer = expression->initializer;
3014 create_local_initializer(initializer, dbgi, entity, type);
3016 /* create a sel for the compound literal address */
3017 ir_node *frame = get_irg_frame(current_ir_graph);
3018 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3023 * Transform a sizeof expression into Firm code.
3025 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
3027 type_t *const type = skip_typeref(expression->type);
3028 /* ยง6.5.3.4:2 if the type is a VLA, evaluate the expression. */
3029 if (is_type_array(type) && type->array.is_vla
3030 && expression->tp_expression != NULL) {
3031 expression_to_firm(expression->tp_expression);
3034 return get_type_size_node(type);
3037 static entity_t *get_expression_entity(const expression_t *expression)
3039 if (expression->kind != EXPR_REFERENCE)
3042 return expression->reference.entity;
3045 static unsigned get_cparser_entity_alignment(const entity_t *entity)
3047 switch(entity->kind) {
3048 DECLARATION_KIND_CASES
3049 return entity->declaration.alignment;
3052 return entity->compound.alignment;
3053 case ENTITY_TYPEDEF:
3054 return entity->typedefe.alignment;
3062 * Transform an alignof expression into Firm code.
3064 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
3066 unsigned alignment = 0;
3068 const expression_t *tp_expression = expression->tp_expression;
3069 if (tp_expression != NULL) {
3070 entity_t *entity = get_expression_entity(tp_expression);
3071 if (entity != NULL) {
3072 alignment = get_cparser_entity_alignment(entity);
3076 if (alignment == 0) {
3077 type_t *type = expression->type;
3078 alignment = get_type_alignment(type);
3081 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3082 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3083 tarval *tv = new_tarval_from_long(alignment, mode);
3084 return new_d_Const(dbgi, tv);
3087 static void init_ir_types(void);
3089 static tarval *fold_constant_to_tarval(const expression_t *expression)
3091 assert(is_type_valid(skip_typeref(expression->base.type)));
3093 bool constant_folding_old = constant_folding;
3094 constant_folding = true;
3098 assert(is_constant_expression(expression));
3100 ir_graph *old_current_ir_graph = current_ir_graph;
3101 current_ir_graph = get_const_code_irg();
3103 ir_node *cnst = expression_to_firm(expression);
3104 current_ir_graph = old_current_ir_graph;
3106 if (!is_Const(cnst)) {
3107 panic("couldn't fold constant");
3110 constant_folding = constant_folding_old;
3112 tarval *tv = get_Const_tarval(cnst);
3116 long fold_constant_to_int(const expression_t *expression)
3118 if (expression->kind == EXPR_INVALID)
3121 tarval *tv = fold_constant_to_tarval(expression);
3122 if (!tarval_is_long(tv)) {
3123 panic("result of constant folding is not integer");
3126 return get_tarval_long(tv);
3129 bool fold_constant_to_bool(const expression_t *expression)
3131 if (expression->kind == EXPR_INVALID)
3133 tarval *tv = fold_constant_to_tarval(expression);
3134 return !tarval_is_null(tv);
3137 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
3139 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
3141 /* first try to fold a constant condition */
3142 if (is_constant_expression(expression->condition)) {
3143 bool val = fold_constant_to_bool(expression->condition);
3145 expression_t *true_expression = expression->true_expression;
3146 if (true_expression == NULL)
3147 true_expression = expression->condition;
3148 return expression_to_firm(true_expression);
3150 return expression_to_firm(expression->false_expression);
3154 ir_node *cur_block = get_cur_block();
3156 /* create the true block */
3157 ir_node *true_block = new_immBlock();
3158 set_cur_block(true_block);
3160 ir_node *true_val = expression->true_expression != NULL ?
3161 expression_to_firm(expression->true_expression) : NULL;
3162 ir_node *true_jmp = new_Jmp();
3164 /* create the false block */
3165 ir_node *false_block = new_immBlock();
3166 set_cur_block(false_block);
3168 ir_node *false_val = expression_to_firm(expression->false_expression);
3169 ir_node *false_jmp = new_Jmp();
3171 /* create the condition evaluation */
3172 set_cur_block(cur_block);
3173 ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
3174 if (expression->true_expression == NULL) {
3175 if (cond_expr != NULL && get_irn_mode(cond_expr) != mode_b) {
3176 true_val = cond_expr;
3178 /* Condition ended with a short circuit (&&, ||, !) operation or a
3179 * comparison. Generate a "1" as value for the true branch. */
3180 true_val = new_Const(get_mode_one(mode_Is));
3183 mature_immBlock(true_block);
3184 mature_immBlock(false_block);
3186 /* create the common block */
3187 ir_node *in_cf[2] = { true_jmp, false_jmp };
3188 ir_node *block = new_Block(2, in_cf);
3189 set_cur_block(block);
3191 /* TODO improve static semantics, so either both or no values are NULL */
3192 if (true_val == NULL || false_val == NULL)
3195 ir_node *in[2] = { true_val, false_val };
3196 ir_mode *mode = get_irn_mode(true_val);
3197 assert(get_irn_mode(false_val) == mode);
3198 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
3204 * Returns an IR-node representing the address of a field.
3206 static ir_node *select_addr(const select_expression_t *expression)
3208 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3210 construct_select_compound(expression);
3212 ir_node *compound_addr = expression_to_firm(expression->compound);
3214 entity_t *entry = expression->compound_entry;
3215 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3216 assert(entry->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
3218 if (constant_folding) {
3219 ir_mode *mode = get_irn_mode(compound_addr);
3220 /* FIXME: here, we need an integer mode with the same number of bits as mode */
3221 ir_node *ofs = new_Const_long(mode_uint, entry->compound_member.offset);
3222 return new_d_Add(dbgi, compound_addr, ofs, mode);
3224 ir_entity *irentity = entry->compound_member.entity;
3225 assert(irentity != NULL);
3226 return new_d_simpleSel(dbgi, new_NoMem(), compound_addr, irentity);
3230 static ir_node *select_to_firm(const select_expression_t *expression)
3232 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3233 ir_node *addr = select_addr(expression);
3234 type_t *type = revert_automatic_type_conversion(
3235 (const expression_t*) expression);
3236 type = skip_typeref(type);
3238 entity_t *entry = expression->compound_entry;
3239 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3240 type_t *entry_type = skip_typeref(entry->declaration.type);
3242 if (entry_type->kind == TYPE_BITFIELD) {
3243 return bitfield_extract_to_firm(expression, addr);
3246 return deref_address(dbgi, type, addr);
3249 /* Values returned by __builtin_classify_type. */
3250 typedef enum gcc_type_class
3256 enumeral_type_class,
3259 reference_type_class,
3263 function_type_class,
3274 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
3276 type_t *type = expr->type_expression->base.type;
3278 /* FIXME gcc returns different values depending on whether compiling C or C++
3279 * e.g. int x[10] is pointer_type_class in C, but array_type_class in C++ */
3282 type = skip_typeref(type);
3283 switch (type->kind) {
3285 const atomic_type_t *const atomic_type = &type->atomic;
3286 switch (atomic_type->akind) {
3287 /* should not be reached */
3288 case ATOMIC_TYPE_INVALID:
3292 /* gcc cannot do that */
3293 case ATOMIC_TYPE_VOID:
3294 tc = void_type_class;
3297 case ATOMIC_TYPE_WCHAR_T: /* gcc handles this as integer */
3298 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
3299 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
3300 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
3301 case ATOMIC_TYPE_SHORT:
3302 case ATOMIC_TYPE_USHORT:
3303 case ATOMIC_TYPE_INT:
3304 case ATOMIC_TYPE_UINT:
3305 case ATOMIC_TYPE_LONG:
3306 case ATOMIC_TYPE_ULONG:
3307 case ATOMIC_TYPE_LONGLONG:
3308 case ATOMIC_TYPE_ULONGLONG:
3309 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
3310 tc = integer_type_class;
3313 case ATOMIC_TYPE_FLOAT:
3314 case ATOMIC_TYPE_DOUBLE:
3315 case ATOMIC_TYPE_LONG_DOUBLE:
3316 tc = real_type_class;
3319 panic("Unexpected atomic type in classify_type_to_firm().");
3322 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
3323 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
3324 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
3325 case TYPE_ARRAY: /* gcc handles this as pointer */
3326 case TYPE_FUNCTION: /* gcc handles this as pointer */
3327 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
3328 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
3329 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
3331 /* gcc handles this as integer */
3332 case TYPE_ENUM: tc = integer_type_class; goto make_const;
3334 /* gcc classifies the referenced type */
3335 case TYPE_REFERENCE: type = type->reference.refers_to; continue;
3338 /* typedef/typeof should be skipped already */
3345 panic("unexpected TYPE classify_type_to_firm().");
3349 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3350 tarval *const tv = new_tarval_from_long(tc, mode_int);
3351 return new_d_Const(dbgi, tv);
3354 static ir_node *function_name_to_firm(
3355 const funcname_expression_t *const expr)
3357 switch(expr->kind) {
3358 case FUNCNAME_FUNCTION:
3359 case FUNCNAME_PRETTY_FUNCTION:
3360 case FUNCNAME_FUNCDNAME:
3361 if (current_function_name == NULL) {
3362 const source_position_t *const src_pos = &expr->base.source_position;
3363 const char *name = current_function_entity->base.symbol->string;
3364 const string_t string = { name, strlen(name) + 1 };
3365 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
3367 return current_function_name;
3368 case FUNCNAME_FUNCSIG:
3369 if (current_funcsig == NULL) {
3370 const source_position_t *const src_pos = &expr->base.source_position;
3371 ir_entity *ent = get_irg_entity(current_ir_graph);
3372 const char *const name = get_entity_ld_name(ent);
3373 const string_t string = { name, strlen(name) + 1 };
3374 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
3376 return current_funcsig;
3378 panic("Unsupported function name");
3381 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
3383 statement_t *statement = expr->statement;
3385 assert(statement->kind == STATEMENT_COMPOUND);
3386 return compound_statement_to_firm(&statement->compound);
3389 static ir_node *va_start_expression_to_firm(
3390 const va_start_expression_t *const expr)
3392 type_t *const type = current_function_entity->declaration.type;
3393 ir_type *const method_type = get_ir_type(type);
3394 int const n = get_method_n_params(method_type) - 1;
3395 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
3396 ir_node *const frame = get_irg_frame(current_ir_graph);
3397 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3398 ir_node *const no_mem = new_NoMem();
3399 ir_node *const arg_sel =
3400 new_d_simpleSel(dbgi, no_mem, frame, parm_ent);
3402 type_t *const param_type = expr->parameter->base.type;
3403 ir_node *const cnst = get_type_size_node(param_type);
3404 ir_mode *const mode = get_irn_mode(cnst);
3405 ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
3406 ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
3407 ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align);
3408 ir_node *const c4 = new_d_And(dbgi, c2, c3, mode);
3409 ir_node *const add = new_d_Add(dbgi, arg_sel, c4, mode_P_data);
3410 set_value_for_expression(expr->ap, add);
3415 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
3417 type_t *const type = expr->base.type;
3418 expression_t *const ap_expr = expr->ap;
3419 ir_node *const ap_addr = expression_to_addr(ap_expr);
3420 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
3421 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3422 ir_node *const res = deref_address(dbgi, type, ap);
3424 ir_node *const cnst = get_type_size_node(expr->base.type);
3425 ir_mode *const mode = get_irn_mode(cnst);
3426 ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
3427 ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
3428 ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align);
3429 ir_node *const c4 = new_d_And(dbgi, c2, c3, mode);
3430 ir_node *const add = new_d_Add(dbgi, ap, c4, mode_P_data);
3432 set_value_for_expression_addr(ap_expr, add, ap_addr);
3438 * Generate Firm for a va_copy expression.
3440 static ir_node *va_copy_expression_to_firm(const va_copy_expression_t *const expr)
3442 ir_node *const src = expression_to_firm(expr->src);
3443 set_value_for_expression(expr->dst, src);
3447 static ir_node *dereference_addr(const unary_expression_t *const expression)
3449 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
3450 return expression_to_firm(expression->value);
3454 * Returns a IR-node representing an lvalue of the given expression.
3456 static ir_node *expression_to_addr(const expression_t *expression)
3458 switch(expression->kind) {
3459 case EXPR_ARRAY_ACCESS:
3460 return array_access_addr(&expression->array_access);
3462 return call_expression_to_firm(&expression->call);
3463 case EXPR_COMPOUND_LITERAL:
3464 return compound_literal_to_firm(&expression->compound_literal);
3465 case EXPR_REFERENCE:
3466 return reference_addr(&expression->reference);
3468 return select_addr(&expression->select);
3469 case EXPR_UNARY_DEREFERENCE:
3470 return dereference_addr(&expression->unary);
3474 panic("trying to get address of non-lvalue");
3477 static ir_node *builtin_constant_to_firm(
3478 const builtin_constant_expression_t *expression)
3480 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3483 if (is_constant_expression(expression->value)) {
3488 return new_Const_long(mode, v);
3491 static ir_node *builtin_types_compatible_to_firm(
3492 const builtin_types_compatible_expression_t *expression)
3494 type_t *const left = get_unqualified_type(skip_typeref(expression->left));
3495 type_t *const right = get_unqualified_type(skip_typeref(expression->right));
3496 long const value = types_compatible(left, right) ? 1 : 0;
3497 ir_mode *const mode = get_ir_mode_arithmetic(expression->base.type);
3498 return new_Const_long(mode, value);
3501 static ir_node *get_label_block(label_t *label)
3503 if (label->block != NULL)
3504 return label->block;
3506 /* beware: might be called from create initializer with current_ir_graph
3507 * set to const_code_irg. */
3508 ir_graph *rem = current_ir_graph;
3509 current_ir_graph = current_function;
3511 ir_node *block = new_immBlock();
3513 label->block = block;
3515 ARR_APP1(label_t *, all_labels, label);
3517 current_ir_graph = rem;
3522 * Pointer to a label. This is used for the
3523 * GNU address-of-label extension.
3525 static ir_node *label_address_to_firm(const label_address_expression_t *label)
3527 dbg_info *dbgi = get_dbg_info(&label->base.source_position);
3528 ir_node *block = get_label_block(label->label);
3529 ir_entity *entity = create_Block_entity(block);
3531 symconst_symbol value;
3532 value.entity_p = entity;
3533 return new_d_SymConst(dbgi, mode_P_code, value, symconst_addr_ent);
3537 * creates firm nodes for an expression. The difference between this function
3538 * and expression_to_firm is, that this version might produce mode_b nodes
3539 * instead of mode_Is.
3541 static ir_node *_expression_to_firm(const expression_t *expression)
3544 if (!constant_folding) {
3545 assert(!expression->base.transformed);
3546 ((expression_t*) expression)->base.transformed = true;
3550 switch (expression->kind) {
3552 return literal_to_firm(&expression->literal);
3553 case EXPR_STRING_LITERAL:
3554 return string_to_firm(&expression->base.source_position, "str.%u",
3555 &expression->literal.value);
3556 case EXPR_WIDE_STRING_LITERAL:
3557 return wide_string_literal_to_firm(&expression->string_literal);
3558 case EXPR_REFERENCE:
3559 return reference_expression_to_firm(&expression->reference);
3560 case EXPR_REFERENCE_ENUM_VALUE:
3561 return reference_expression_enum_value_to_firm(&expression->reference);
3563 return call_expression_to_firm(&expression->call);
3565 return unary_expression_to_firm(&expression->unary);
3567 return binary_expression_to_firm(&expression->binary);
3568 case EXPR_ARRAY_ACCESS:
3569 return array_access_to_firm(&expression->array_access);
3571 return sizeof_to_firm(&expression->typeprop);
3573 return alignof_to_firm(&expression->typeprop);
3574 case EXPR_CONDITIONAL:
3575 return conditional_to_firm(&expression->conditional);
3577 return select_to_firm(&expression->select);
3578 case EXPR_CLASSIFY_TYPE:
3579 return classify_type_to_firm(&expression->classify_type);
3581 return function_name_to_firm(&expression->funcname);
3582 case EXPR_STATEMENT:
3583 return statement_expression_to_firm(&expression->statement);
3585 return va_start_expression_to_firm(&expression->va_starte);
3587 return va_arg_expression_to_firm(&expression->va_arge);
3589 return va_copy_expression_to_firm(&expression->va_copye);
3590 case EXPR_BUILTIN_CONSTANT_P:
3591 return builtin_constant_to_firm(&expression->builtin_constant);
3592 case EXPR_BUILTIN_TYPES_COMPATIBLE_P:
3593 return builtin_types_compatible_to_firm(&expression->builtin_types_compatible);
3595 return offsetof_to_firm(&expression->offsetofe);
3596 case EXPR_COMPOUND_LITERAL:
3597 return compound_literal_to_firm(&expression->compound_literal);
3598 case EXPR_LABEL_ADDRESS:
3599 return label_address_to_firm(&expression->label_address);
3605 panic("invalid expression found");
3609 * Check if a given expression is a GNU __builtin_expect() call.
3611 static bool is_builtin_expect(const expression_t *expression)
3613 if (expression->kind != EXPR_CALL)
3616 expression_t *function = expression->call.function;
3617 if (function->kind != EXPR_REFERENCE)
3619 reference_expression_t *ref = &function->reference;
3620 if (ref->entity->kind != ENTITY_FUNCTION ||
3621 ref->entity->function.btk != bk_gnu_builtin_expect)
3627 static bool produces_mode_b(const expression_t *expression)
3629 switch (expression->kind) {
3630 case EXPR_BINARY_EQUAL:
3631 case EXPR_BINARY_NOTEQUAL:
3632 case EXPR_BINARY_LESS:
3633 case EXPR_BINARY_LESSEQUAL:
3634 case EXPR_BINARY_GREATER:
3635 case EXPR_BINARY_GREATEREQUAL:
3636 case EXPR_BINARY_ISGREATER:
3637 case EXPR_BINARY_ISGREATEREQUAL:
3638 case EXPR_BINARY_ISLESS:
3639 case EXPR_BINARY_ISLESSEQUAL:
3640 case EXPR_BINARY_ISLESSGREATER:
3641 case EXPR_BINARY_ISUNORDERED:
3642 case EXPR_UNARY_NOT:
3646 if (is_builtin_expect(expression)) {
3647 expression_t *argument = expression->call.arguments->expression;
3648 return produces_mode_b(argument);
3651 case EXPR_BINARY_COMMA:
3652 return produces_mode_b(expression->binary.right);
3659 static ir_node *expression_to_firm(const expression_t *expression)
3661 if (!produces_mode_b(expression)) {
3662 ir_node *res = _expression_to_firm(expression);
3663 assert(res == NULL || get_irn_mode(res) != mode_b);
3667 if (is_constant_expression(expression)) {
3668 ir_node *res = _expression_to_firm(expression);
3669 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3670 assert(is_Const(res));
3671 if (is_Const_null(res)) {
3672 return new_Const_long(mode, 0);
3674 return new_Const_long(mode, 1);
3678 /* we have to produce a 0/1 from the mode_b expression */
3679 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3680 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3681 return produce_condition_result(expression, mode, dbgi);
3685 * create a short-circuit expression evaluation that tries to construct
3686 * efficient control flow structures for &&, || and ! expressions
3688 static ir_node *create_condition_evaluation(const expression_t *expression,
3689 ir_node *true_block,
3690 ir_node *false_block)
3692 switch(expression->kind) {
3693 case EXPR_UNARY_NOT: {
3694 const unary_expression_t *unary_expression = &expression->unary;
3695 create_condition_evaluation(unary_expression->value, false_block,
3699 case EXPR_BINARY_LOGICAL_AND: {
3700 const binary_expression_t *binary_expression = &expression->binary;
3702 ir_node *extra_block = new_immBlock();
3703 create_condition_evaluation(binary_expression->left, extra_block,
3705 mature_immBlock(extra_block);
3706 set_cur_block(extra_block);
3707 create_condition_evaluation(binary_expression->right, true_block,
3711 case EXPR_BINARY_LOGICAL_OR: {
3712 const binary_expression_t *binary_expression = &expression->binary;
3714 ir_node *extra_block = new_immBlock();
3715 create_condition_evaluation(binary_expression->left, true_block,
3717 mature_immBlock(extra_block);
3718 set_cur_block(extra_block);
3719 create_condition_evaluation(binary_expression->right, true_block,
3727 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3728 ir_node *cond_expr = _expression_to_firm(expression);
3729 ir_node *condition = create_conv(dbgi, cond_expr, mode_b);
3730 ir_node *cond = new_d_Cond(dbgi, condition);
3731 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3732 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3734 /* set branch prediction info based on __builtin_expect */
3735 if (is_builtin_expect(expression) && is_Cond(cond)) {
3736 call_argument_t *argument = expression->call.arguments->next;
3737 if (is_constant_expression(argument->expression)) {
3738 bool cnst = fold_constant_to_bool(argument->expression);
3739 cond_jmp_predicate pred;
3741 if (cnst == false) {
3742 pred = COND_JMP_PRED_FALSE;
3744 pred = COND_JMP_PRED_TRUE;
3746 set_Cond_jmp_pred(cond, pred);
3750 add_immBlock_pred(true_block, true_proj);
3751 add_immBlock_pred(false_block, false_proj);
3753 set_cur_block(NULL);
3757 static void create_variable_entity(entity_t *variable,
3758 declaration_kind_t declaration_kind,
3759 ir_type *parent_type)
3761 assert(variable->kind == ENTITY_VARIABLE);
3762 type_t *type = skip_typeref(variable->declaration.type);
3764 ident *const id = new_id_from_str(variable->base.symbol->string);
3765 ir_type *const irtype = get_ir_type(type);
3766 dbg_info *const dbgi = get_dbg_info(&variable->base.source_position);
3767 ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi);
3768 unsigned alignment = variable->declaration.alignment;
3770 set_entity_alignment(irentity, alignment);
3772 handle_decl_modifiers(irentity, variable);
3774 variable->declaration.kind = (unsigned char) declaration_kind;
3775 variable->variable.v.entity = irentity;
3776 set_entity_ld_ident(irentity, create_ld_ident(variable));
3778 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3779 set_entity_volatility(irentity, volatility_is_volatile);
3784 typedef struct type_path_entry_t type_path_entry_t;
3785 struct type_path_entry_t {
3787 ir_initializer_t *initializer;
3789 entity_t *compound_entry;
3792 typedef struct type_path_t type_path_t;
3793 struct type_path_t {
3794 type_path_entry_t *path;
3799 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3801 size_t len = ARR_LEN(path->path);
3803 for (size_t i = 0; i < len; ++i) {
3804 const type_path_entry_t *entry = & path->path[i];
3806 type_t *type = skip_typeref(entry->type);
3807 if (is_type_compound(type)) {
3808 fprintf(stderr, ".%s", entry->compound_entry->base.symbol->string);
3809 } else if (is_type_array(type)) {
3810 fprintf(stderr, "[%u]", (unsigned) entry->index);
3812 fprintf(stderr, "-INVALID-");
3815 fprintf(stderr, " (");
3816 print_type(path->top_type);
3817 fprintf(stderr, ")");
3820 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3822 size_t len = ARR_LEN(path->path);
3824 return & path->path[len-1];
3827 static type_path_entry_t *append_to_type_path(type_path_t *path)
3829 size_t len = ARR_LEN(path->path);
3830 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3832 type_path_entry_t *result = & path->path[len];
3833 memset(result, 0, sizeof(result[0]));
3837 static size_t get_compound_member_count(const compound_type_t *type)
3839 compound_t *compound = type->compound;
3840 size_t n_members = 0;
3841 entity_t *member = compound->members.entities;
3842 for ( ; member != NULL; member = member->base.next) {
3849 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3851 type_t *orig_top_type = path->top_type;
3852 type_t *top_type = skip_typeref(orig_top_type);
3854 assert(is_type_compound(top_type) || is_type_array(top_type));
3856 if (ARR_LEN(path->path) == 0) {
3859 type_path_entry_t *top = get_type_path_top(path);
3860 ir_initializer_t *initializer = top->initializer;
3861 return get_initializer_compound_value(initializer, top->index);
3865 static void descend_into_subtype(type_path_t *path)
3867 type_t *orig_top_type = path->top_type;
3868 type_t *top_type = skip_typeref(orig_top_type);
3870 assert(is_type_compound(top_type) || is_type_array(top_type));
3872 ir_initializer_t *initializer = get_initializer_entry(path);
3874 type_path_entry_t *top = append_to_type_path(path);
3875 top->type = top_type;
3879 if (is_type_compound(top_type)) {
3880 compound_t *compound = top_type->compound.compound;
3881 entity_t *entry = compound->members.entities;
3883 top->compound_entry = entry;
3885 len = get_compound_member_count(&top_type->compound);
3886 if (entry != NULL) {
3887 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3888 path->top_type = entry->declaration.type;
3891 assert(is_type_array(top_type));
3892 assert(top_type->array.size > 0);
3895 path->top_type = top_type->array.element_type;
3896 len = top_type->array.size;
3898 if (initializer == NULL
3899 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3900 initializer = create_initializer_compound(len);
3901 /* we have to set the entry at the 2nd latest path entry... */
3902 size_t path_len = ARR_LEN(path->path);
3903 assert(path_len >= 1);
3905 type_path_entry_t *entry = & path->path[path_len-2];
3906 ir_initializer_t *tinitializer = entry->initializer;
3907 set_initializer_compound_value(tinitializer, entry->index,
3911 top->initializer = initializer;
3914 static void ascend_from_subtype(type_path_t *path)
3916 type_path_entry_t *top = get_type_path_top(path);
3918 path->top_type = top->type;
3920 size_t len = ARR_LEN(path->path);
3921 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3924 static void walk_designator(type_path_t *path, const designator_t *designator)
3926 /* designators start at current object type */
3927 ARR_RESIZE(type_path_entry_t, path->path, 1);
3929 for ( ; designator != NULL; designator = designator->next) {
3930 type_path_entry_t *top = get_type_path_top(path);
3931 type_t *orig_type = top->type;
3932 type_t *type = skip_typeref(orig_type);
3934 if (designator->symbol != NULL) {
3935 assert(is_type_compound(type));
3937 symbol_t *symbol = designator->symbol;
3939 compound_t *compound = type->compound.compound;
3940 entity_t *iter = compound->members.entities;
3941 for ( ; iter != NULL; iter = iter->base.next, ++index) {
3942 if (iter->base.symbol == symbol) {
3943 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
3947 assert(iter != NULL);
3949 /* revert previous initialisations of other union elements */
3950 if (type->kind == TYPE_COMPOUND_UNION) {
3951 ir_initializer_t *initializer = top->initializer;
3952 if (initializer != NULL
3953 && get_initializer_kind(initializer) == IR_INITIALIZER_COMPOUND) {
3954 /* are we writing to a new element? */
3955 ir_initializer_t *oldi
3956 = get_initializer_compound_value(initializer, index);
3957 if (get_initializer_kind(oldi) == IR_INITIALIZER_NULL) {
3958 /* clear initializer */
3960 = get_initializer_compound_n_entries(initializer);
3961 ir_initializer_t *nulli = get_initializer_null();
3962 for (size_t i = 0; i < len; ++i) {
3963 set_initializer_compound_value(initializer, i,
3970 top->type = orig_type;
3971 top->compound_entry = iter;
3973 orig_type = iter->declaration.type;
3975 expression_t *array_index = designator->array_index;
3976 assert(designator->array_index != NULL);
3977 assert(is_type_array(type));
3979 long index = fold_constant_to_int(array_index);
3982 if (type->array.size_constant) {
3983 long array_size = type->array.size;
3984 assert(index < array_size);
3988 top->type = orig_type;
3989 top->index = (size_t) index;
3990 orig_type = type->array.element_type;
3992 path->top_type = orig_type;
3994 if (designator->next != NULL) {
3995 descend_into_subtype(path);
3999 path->invalid = false;
4002 static void advance_current_object(type_path_t *path)
4004 if (path->invalid) {
4005 /* TODO: handle this... */
4006 panic("invalid initializer in ast2firm (excessive elements)");
4009 type_path_entry_t *top = get_type_path_top(path);
4011 type_t *type = skip_typeref(top->type);
4012 if (is_type_union(type)) {
4013 /* only the first element is initialized in unions */
4014 top->compound_entry = NULL;
4015 } else if (is_type_struct(type)) {
4016 entity_t *entry = top->compound_entry;
4019 entry = entry->base.next;
4020 top->compound_entry = entry;
4021 if (entry != NULL) {
4022 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
4023 path->top_type = entry->declaration.type;
4027 assert(is_type_array(type));
4030 if (!type->array.size_constant || top->index < type->array.size) {
4035 /* we're past the last member of the current sub-aggregate, try if we
4036 * can ascend in the type hierarchy and continue with another subobject */
4037 size_t len = ARR_LEN(path->path);
4040 ascend_from_subtype(path);
4041 advance_current_object(path);
4043 path->invalid = true;
4048 static ir_initializer_t *create_ir_initializer(
4049 const initializer_t *initializer, type_t *type);
4051 static ir_initializer_t *create_ir_initializer_value(
4052 const initializer_value_t *initializer)
4054 if (is_type_compound(initializer->value->base.type)) {
4055 panic("initializer creation for compounds not implemented yet");
4057 type_t *type = initializer->value->base.type;
4058 expression_t *expr = initializer->value;
4059 if (initializer_use_bitfield_basetype) {
4060 type_t *skipped = skip_typeref(type);
4061 if (skipped->kind == TYPE_BITFIELD) {
4062 /* remove the bitfield cast... */
4063 assert(expr->kind == EXPR_UNARY_CAST_IMPLICIT);
4064 expr = expr->unary.value;
4065 type = skipped->bitfield.base_type;
4068 ir_node *value = expression_to_firm(expr);
4069 ir_mode *mode = get_ir_mode_storage(type);
4070 value = create_conv(NULL, value, mode);
4071 return create_initializer_const(value);
4074 /** test wether type can be initialized by a string constant */
4075 static bool is_string_type(type_t *type)
4078 if (is_type_pointer(type)) {
4079 inner = skip_typeref(type->pointer.points_to);
4080 } else if(is_type_array(type)) {
4081 inner = skip_typeref(type->array.element_type);
4086 return is_type_integer(inner);
4089 static ir_initializer_t *create_ir_initializer_list(
4090 const initializer_list_t *initializer, type_t *type)
4093 memset(&path, 0, sizeof(path));
4094 path.top_type = type;
4095 path.path = NEW_ARR_F(type_path_entry_t, 0);
4097 descend_into_subtype(&path);
4099 for (size_t i = 0; i < initializer->len; ++i) {
4100 const initializer_t *sub_initializer = initializer->initializers[i];
4102 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
4103 walk_designator(&path, sub_initializer->designator.designator);
4107 if (sub_initializer->kind == INITIALIZER_VALUE) {
4108 /* we might have to descend into types until we're at a scalar
4111 type_t *orig_top_type = path.top_type;
4112 type_t *top_type = skip_typeref(orig_top_type);
4114 if (is_type_scalar(top_type))
4116 descend_into_subtype(&path);
4118 } else if (sub_initializer->kind == INITIALIZER_STRING
4119 || sub_initializer->kind == INITIALIZER_WIDE_STRING) {
4120 /* we might have to descend into types until we're at a scalar
4123 type_t *orig_top_type = path.top_type;
4124 type_t *top_type = skip_typeref(orig_top_type);
4126 if (is_string_type(top_type))
4128 descend_into_subtype(&path);
4132 ir_initializer_t *sub_irinitializer
4133 = create_ir_initializer(sub_initializer, path.top_type);
4135 size_t path_len = ARR_LEN(path.path);
4136 assert(path_len >= 1);
4137 type_path_entry_t *entry = & path.path[path_len-1];
4138 ir_initializer_t *tinitializer = entry->initializer;
4139 set_initializer_compound_value(tinitializer, entry->index,
4142 advance_current_object(&path);
4145 assert(ARR_LEN(path.path) >= 1);
4146 ir_initializer_t *result = path.path[0].initializer;
4147 DEL_ARR_F(path.path);
4152 static ir_initializer_t *create_ir_initializer_string(
4153 const initializer_string_t *initializer, type_t *type)
4155 type = skip_typeref(type);
4157 size_t string_len = initializer->string.size;
4158 assert(type->kind == TYPE_ARRAY);
4159 assert(type->array.size_constant);
4160 size_t len = type->array.size;
4161 ir_initializer_t *irinitializer = create_initializer_compound(len);
4163 const char *string = initializer->string.begin;
4164 ir_mode *mode = get_ir_mode_storage(type->array.element_type);
4166 for (size_t i = 0; i < len; ++i) {
4171 tarval *tv = new_tarval_from_long(c, mode);
4172 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
4174 set_initializer_compound_value(irinitializer, i, char_initializer);
4177 return irinitializer;
4180 static ir_initializer_t *create_ir_initializer_wide_string(
4181 const initializer_wide_string_t *initializer, type_t *type)
4183 assert(type->kind == TYPE_ARRAY);
4184 assert(type->array.size_constant);
4185 size_t len = type->array.size;
4186 size_t string_len = wstrlen(&initializer->string);
4187 ir_initializer_t *irinitializer = create_initializer_compound(len);
4189 const char *p = initializer->string.begin;
4190 ir_mode *mode = get_type_mode(ir_type_wchar_t);
4192 for (size_t i = 0; i < len; ++i) {
4194 if (i < string_len) {
4195 c = read_utf8_char(&p);
4197 tarval *tv = new_tarval_from_long(c, mode);
4198 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
4200 set_initializer_compound_value(irinitializer, i, char_initializer);
4203 return irinitializer;
4206 static ir_initializer_t *create_ir_initializer(
4207 const initializer_t *initializer, type_t *type)
4209 switch(initializer->kind) {
4210 case INITIALIZER_STRING:
4211 return create_ir_initializer_string(&initializer->string, type);
4213 case INITIALIZER_WIDE_STRING:
4214 return create_ir_initializer_wide_string(&initializer->wide_string,
4217 case INITIALIZER_LIST:
4218 return create_ir_initializer_list(&initializer->list, type);
4220 case INITIALIZER_VALUE:
4221 return create_ir_initializer_value(&initializer->value);
4223 case INITIALIZER_DESIGNATOR:
4224 panic("unexpected designator initializer found");
4226 panic("unknown initializer");
4229 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
4230 ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr)
4232 switch(get_initializer_kind(initializer)) {
4233 case IR_INITIALIZER_NULL: {
4234 /* NULL is undefined for dynamic initializers */
4237 case IR_INITIALIZER_CONST: {
4238 ir_node *node = get_initializer_const_value(initializer);
4239 ir_type *ent_type = get_entity_type(entity);
4241 /* is it a bitfield type? */
4242 if (is_Primitive_type(ent_type) &&
4243 get_primitive_base_type(ent_type) != NULL) {
4244 bitfield_store_to_firm(dbgi, entity, base_addr, node, false);
4248 assert(get_type_mode(type) == get_irn_mode(node));
4249 ir_node *mem = get_store();
4250 ir_node *store = new_d_Store(dbgi, mem, base_addr, node, cons_none);
4251 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4255 case IR_INITIALIZER_TARVAL: {
4256 tarval *tv = get_initializer_tarval_value(initializer);
4257 ir_node *cnst = new_d_Const(dbgi, tv);
4258 ir_type *ent_type = get_entity_type(entity);
4260 /* is it a bitfield type? */
4261 if (is_Primitive_type(ent_type) &&
4262 get_primitive_base_type(ent_type) != NULL) {
4263 bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false);
4267 assert(get_type_mode(type) == get_tarval_mode(tv));
4268 ir_node *mem = get_store();
4269 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst, cons_none);
4270 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4274 case IR_INITIALIZER_COMPOUND: {
4275 assert(is_compound_type(type));
4277 if (is_Array_type(type)) {
4278 assert(has_array_upper_bound(type, 0));
4279 n_members = get_array_upper_bound_int(type, 0);
4281 n_members = get_compound_n_members(type);
4284 if (get_initializer_compound_n_entries(initializer)
4285 != (unsigned) n_members)
4286 panic("initializer doesn't match compound type");
4288 for (int i = 0; i < n_members; ++i) {
4291 ir_entity *sub_entity;
4292 if (is_Array_type(type)) {
4293 tarval *index_tv = new_tarval_from_long(i, mode_uint);
4294 ir_node *cnst = new_d_Const(dbgi, index_tv);
4295 ir_node *in[1] = { cnst };
4296 irtype = get_array_element_type(type);
4297 sub_entity = get_array_element_entity(type);
4298 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
4301 sub_entity = get_compound_member(type, i);
4302 irtype = get_entity_type(sub_entity);
4303 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
4307 ir_initializer_t *sub_init
4308 = get_initializer_compound_value(initializer, i);
4310 create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
4317 panic("invalid IR_INITIALIZER found");
4320 static void create_dynamic_initializer(ir_initializer_t *initializer,
4321 dbg_info *dbgi, ir_entity *entity)
4323 ir_node *frame = get_irg_frame(current_ir_graph);
4324 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
4325 ir_type *type = get_entity_type(entity);
4327 create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
4330 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
4331 ir_entity *entity, type_t *type)
4333 ir_node *memory = get_store();
4334 ir_node *nomem = new_NoMem();
4335 ir_node *frame = get_irg_frame(current_ir_graph);
4336 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
4338 if (initializer->kind == INITIALIZER_VALUE) {
4339 initializer_value_t *initializer_value = &initializer->value;
4341 ir_node *value = expression_to_firm(initializer_value->value);
4342 type = skip_typeref(type);
4343 assign_value(dbgi, addr, type, value);
4347 if (!is_constant_initializer(initializer)) {
4348 bool old_initializer_use_bitfield_basetype
4349 = initializer_use_bitfield_basetype;
4350 initializer_use_bitfield_basetype = true;
4351 ir_initializer_t *irinitializer
4352 = create_ir_initializer(initializer, type);
4353 initializer_use_bitfield_basetype
4354 = old_initializer_use_bitfield_basetype;
4356 create_dynamic_initializer(irinitializer, dbgi, entity);
4360 /* create the ir_initializer */
4361 ir_graph *const old_current_ir_graph = current_ir_graph;
4362 current_ir_graph = get_const_code_irg();
4364 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
4366 assert(current_ir_graph == get_const_code_irg());
4367 current_ir_graph = old_current_ir_graph;
4369 /* create a "template" entity which is copied to the entity on the stack */
4370 ident *const id = id_unique("initializer.%u");
4371 ir_type *const irtype = get_ir_type(type);
4372 ir_type *const global_type = get_glob_type();
4373 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
4374 set_entity_ld_ident(init_entity, id);
4376 set_entity_visibility(init_entity, ir_visibility_private);
4377 add_entity_linkage(init_entity, IR_LINKAGE_CONSTANT);
4379 set_entity_initializer(init_entity, irinitializer);
4381 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
4382 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
4384 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
4385 set_store(copyb_mem);
4388 static void create_initializer_local_variable_entity(entity_t *entity)
4390 assert(entity->kind == ENTITY_VARIABLE);
4391 initializer_t *initializer = entity->variable.initializer;
4392 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4393 ir_entity *irentity = entity->variable.v.entity;
4394 type_t *type = entity->declaration.type;
4396 create_local_initializer(initializer, dbgi, irentity, type);
4399 static void create_variable_initializer(entity_t *entity)
4401 assert(entity->kind == ENTITY_VARIABLE);
4402 initializer_t *initializer = entity->variable.initializer;
4403 if (initializer == NULL)
4406 declaration_kind_t declaration_kind
4407 = (declaration_kind_t) entity->declaration.kind;
4408 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
4409 create_initializer_local_variable_entity(entity);
4413 type_t *type = entity->declaration.type;
4414 type_qualifiers_t tq = get_type_qualifier(type, true);
4416 if (initializer->kind == INITIALIZER_VALUE) {
4417 initializer_value_t *initializer_value = &initializer->value;
4418 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4420 ir_node *value = expression_to_firm(initializer_value->value);
4422 type_t *type = initializer_value->value->base.type;
4423 ir_mode *mode = get_ir_mode_storage(type);
4424 value = create_conv(dbgi, value, mode);
4425 value = do_strict_conv(dbgi, value);
4427 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
4428 set_value(entity->variable.v.value_number, value);
4430 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4432 ir_entity *irentity = entity->variable.v.entity;
4434 if (tq & TYPE_QUALIFIER_CONST
4435 && get_entity_owner(irentity) != get_tls_type()) {
4436 add_entity_linkage(irentity, IR_LINKAGE_CONSTANT);
4438 set_atomic_ent_value(irentity, value);
4441 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
4442 declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4444 ir_entity *irentity = entity->variable.v.entity;
4445 ir_initializer_t *irinitializer
4446 = create_ir_initializer(initializer, type);
4448 if (tq & TYPE_QUALIFIER_CONST) {
4449 add_entity_linkage(irentity, IR_LINKAGE_CONSTANT);
4451 set_entity_initializer(irentity, irinitializer);
4455 static void create_variable_length_array(entity_t *entity)
4457 assert(entity->kind == ENTITY_VARIABLE);
4458 assert(entity->variable.initializer == NULL);
4460 entity->declaration.kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
4461 entity->variable.v.vla_base = NULL;
4463 /* TODO: record VLA somewhere so we create the free node when we leave
4467 static void allocate_variable_length_array(entity_t *entity)
4469 assert(entity->kind == ENTITY_VARIABLE);
4470 assert(entity->variable.initializer == NULL);
4471 assert(get_cur_block() != NULL);
4473 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4474 type_t *type = entity->declaration.type;
4475 ir_type *el_type = get_ir_type(type->array.element_type);
4477 /* make sure size_node is calculated */
4478 get_type_size_node(type);
4479 ir_node *elems = type->array.size_node;
4480 ir_node *mem = get_store();
4481 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
4483 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
4484 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
4487 assert(entity->declaration.kind == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
4488 entity->variable.v.vla_base = addr;
4492 * Creates a Firm local variable from a declaration.
4494 static void create_local_variable(entity_t *entity)
4496 assert(entity->kind == ENTITY_VARIABLE);
4497 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4499 bool needs_entity = entity->variable.address_taken;
4500 type_t *type = skip_typeref(entity->declaration.type);
4502 /* is it a variable length array? */
4503 if (is_type_array(type) && !type->array.size_constant) {
4504 create_variable_length_array(entity);
4506 } else if (is_type_array(type) || is_type_compound(type)) {
4507 needs_entity = true;
4508 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4509 needs_entity = true;
4513 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
4514 create_variable_entity(entity,
4515 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
4518 entity->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
4519 entity->variable.v.value_number = next_value_number_function;
4520 set_irg_loc_description(current_ir_graph, next_value_number_function,
4522 ++next_value_number_function;
4526 static void create_local_static_variable(entity_t *entity)
4528 assert(entity->kind == ENTITY_VARIABLE);
4529 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4531 type_t *type = skip_typeref(entity->declaration.type);
4532 ir_type *const var_type = entity->variable.thread_local ?
4533 get_tls_type() : get_glob_type();
4534 ir_type *const irtype = get_ir_type(type);
4535 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
4537 size_t l = strlen(entity->base.symbol->string);
4538 char buf[l + sizeof(".%u")];
4539 snprintf(buf, sizeof(buf), "%s.%%u", entity->base.symbol->string);
4540 ident *const id = id_unique(buf);
4541 ir_entity *const irentity = new_d_entity(var_type, id, irtype, dbgi);
4543 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4544 set_entity_volatility(irentity, volatility_is_volatile);
4547 entity->declaration.kind = DECLARATION_KIND_GLOBAL_VARIABLE;
4548 entity->variable.v.entity = irentity;
4550 set_entity_ld_ident(irentity, id);
4551 set_entity_visibility(irentity, ir_visibility_local);
4553 ir_graph *const old_current_ir_graph = current_ir_graph;
4554 current_ir_graph = get_const_code_irg();
4556 create_variable_initializer(entity);
4558 assert(current_ir_graph == get_const_code_irg());
4559 current_ir_graph = old_current_ir_graph;
4564 static void return_statement_to_firm(return_statement_t *statement)
4566 if (get_cur_block() == NULL)
4569 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4570 type_t *type = current_function_entity->declaration.type;
4571 ir_type *func_irtype = get_ir_type(type);
4576 if (get_method_n_ress(func_irtype) > 0) {
4577 ir_type *res_type = get_method_res_type(func_irtype, 0);
4579 if (statement->value != NULL) {
4580 ir_node *node = expression_to_firm(statement->value);
4581 if (!is_compound_type(res_type)) {
4582 type_t *type = statement->value->base.type;
4583 ir_mode *mode = get_ir_mode_storage(type);
4584 node = create_conv(dbgi, node, mode);
4585 node = do_strict_conv(dbgi, node);
4590 if (is_compound_type(res_type)) {
4593 mode = get_type_mode(res_type);
4595 in[0] = new_Unknown(mode);
4599 /* build return_value for its side effects */
4600 if (statement->value != NULL) {
4601 expression_to_firm(statement->value);
4606 ir_node *store = get_store();
4607 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
4609 ir_node *end_block = get_irg_end_block(current_ir_graph);
4610 add_immBlock_pred(end_block, ret);
4612 set_cur_block(NULL);
4615 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
4617 if (get_cur_block() == NULL)
4620 return expression_to_firm(statement->expression);
4623 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
4625 entity_t *entity = compound->scope.entities;
4626 for ( ; entity != NULL; entity = entity->base.next) {
4627 if (!is_declaration(entity))
4630 create_local_declaration(entity);
4633 ir_node *result = NULL;
4634 statement_t *statement = compound->statements;
4635 for ( ; statement != NULL; statement = statement->base.next) {
4636 if (statement->base.next == NULL
4637 && statement->kind == STATEMENT_EXPRESSION) {
4638 result = expression_statement_to_firm(
4639 &statement->expression);
4642 statement_to_firm(statement);
4648 static void create_global_variable(entity_t *entity)
4650 ir_linkage linkage = 0;
4651 ir_visibility visibility = ir_visibility_default;
4652 ir_entity *irentity;
4653 assert(entity->kind == ENTITY_VARIABLE);
4655 switch ((storage_class_tag_t)entity->declaration.storage_class) {
4656 case STORAGE_CLASS_EXTERN: visibility = ir_visibility_external; break;
4657 case STORAGE_CLASS_STATIC: visibility = ir_visibility_local; break;
4658 case STORAGE_CLASS_NONE:
4659 visibility = ir_visibility_default;
4660 /* uninitialized globals get merged in C */
4661 if (entity->variable.initializer == NULL)
4662 linkage |= IR_LINKAGE_MERGE;
4664 case STORAGE_CLASS_TYPEDEF:
4665 case STORAGE_CLASS_AUTO:
4666 case STORAGE_CLASS_REGISTER:
4667 panic("invalid storage class for global var");
4670 ir_type *var_type = get_glob_type();
4671 if (entity->variable.thread_local) {
4672 var_type = get_tls_type();
4673 /* LINKAGE_MERGE not supported by current linkers */
4674 linkage &= ~IR_LINKAGE_MERGE;
4676 create_variable_entity(entity, DECLARATION_KIND_GLOBAL_VARIABLE, var_type);
4677 irentity = entity->variable.v.entity;
4678 add_entity_linkage(irentity, linkage);
4679 set_entity_visibility(irentity, visibility);
4682 static void create_local_declaration(entity_t *entity)
4684 assert(is_declaration(entity));
4686 /* construct type */
4687 (void) get_ir_type(entity->declaration.type);
4688 if (entity->base.symbol == NULL) {
4692 switch ((storage_class_tag_t) entity->declaration.storage_class) {
4693 case STORAGE_CLASS_STATIC:
4694 if (entity->kind == ENTITY_FUNCTION) {
4695 (void)get_function_entity(entity, NULL);
4697 create_local_static_variable(entity);
4700 case STORAGE_CLASS_EXTERN:
4701 if (entity->kind == ENTITY_FUNCTION) {
4702 assert(entity->function.statement == NULL);
4703 (void)get_function_entity(entity, NULL);
4705 create_global_variable(entity);
4706 create_variable_initializer(entity);
4709 case STORAGE_CLASS_NONE:
4710 case STORAGE_CLASS_AUTO:
4711 case STORAGE_CLASS_REGISTER:
4712 if (entity->kind == ENTITY_FUNCTION) {
4713 if (entity->function.statement != NULL) {
4714 ir_type *owner = get_irg_frame_type(current_ir_graph);
4715 (void)get_function_entity(entity, owner);
4716 entity->declaration.kind = DECLARATION_KIND_INNER_FUNCTION;
4717 enqueue_inner_function(entity);
4719 (void)get_function_entity(entity, NULL);
4722 create_local_variable(entity);
4725 case STORAGE_CLASS_TYPEDEF:
4728 panic("invalid storage class found");
4731 static void initialize_local_declaration(entity_t *entity)
4733 if (entity->base.symbol == NULL)
4736 // no need to emit code in dead blocks
4737 if (entity->declaration.storage_class != STORAGE_CLASS_STATIC
4738 && get_cur_block() == NULL)
4741 switch ((declaration_kind_t) entity->declaration.kind) {
4742 case DECLARATION_KIND_LOCAL_VARIABLE:
4743 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4744 create_variable_initializer(entity);
4747 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4748 allocate_variable_length_array(entity);
4751 case DECLARATION_KIND_COMPOUND_MEMBER:
4752 case DECLARATION_KIND_GLOBAL_VARIABLE:
4753 case DECLARATION_KIND_FUNCTION:
4754 case DECLARATION_KIND_INNER_FUNCTION:
4757 case DECLARATION_KIND_PARAMETER:
4758 case DECLARATION_KIND_PARAMETER_ENTITY:
4759 panic("can't initialize parameters");
4761 case DECLARATION_KIND_UNKNOWN:
4762 panic("can't initialize unknown declaration");
4764 panic("invalid declaration kind");
4767 static void declaration_statement_to_firm(declaration_statement_t *statement)
4769 entity_t *entity = statement->declarations_begin;
4773 entity_t *const last = statement->declarations_end;
4774 for ( ;; entity = entity->base.next) {
4775 if (is_declaration(entity)) {
4776 initialize_local_declaration(entity);
4777 } else if (entity->kind == ENTITY_TYPEDEF) {
4778 /* ยง6.7.7:3 Any array size expressions associated with variable length
4779 * array declarators are evaluated each time the declaration of the
4780 * typedef name is reached in the order of execution. */
4781 type_t *const type = skip_typeref(entity->typedefe.type);
4782 if (is_type_array(type) && type->array.is_vla)
4783 get_vla_size(&type->array);
4790 static void if_statement_to_firm(if_statement_t *statement)
4792 ir_node *cur_block = get_cur_block();
4794 ir_node *fallthrough_block = NULL;
4796 /* the true (blocks) */
4797 ir_node *true_block = NULL;
4798 if (statement->true_statement != NULL) {
4799 true_block = new_immBlock();
4800 set_cur_block(true_block);
4801 statement_to_firm(statement->true_statement);
4802 if (get_cur_block() != NULL) {
4803 ir_node *jmp = new_Jmp();
4804 if (fallthrough_block == NULL)
4805 fallthrough_block = new_immBlock();
4806 add_immBlock_pred(fallthrough_block, jmp);
4810 /* the false (blocks) */
4811 ir_node *false_block = NULL;
4812 if (statement->false_statement != NULL) {
4813 false_block = new_immBlock();
4814 set_cur_block(false_block);
4816 statement_to_firm(statement->false_statement);
4817 if (get_cur_block() != NULL) {
4818 ir_node *jmp = new_Jmp();
4819 if (fallthrough_block == NULL)
4820 fallthrough_block = new_immBlock();
4821 add_immBlock_pred(fallthrough_block, jmp);
4825 /* create the condition */
4826 if (cur_block != NULL) {
4827 if (true_block == NULL || false_block == NULL) {
4828 if (fallthrough_block == NULL)
4829 fallthrough_block = new_immBlock();
4830 if (true_block == NULL)
4831 true_block = fallthrough_block;
4832 if (false_block == NULL)
4833 false_block = fallthrough_block;
4836 set_cur_block(cur_block);
4837 create_condition_evaluation(statement->condition, true_block,
4841 mature_immBlock(true_block);
4842 if (false_block != fallthrough_block && false_block != NULL) {
4843 mature_immBlock(false_block);
4845 if (fallthrough_block != NULL) {
4846 mature_immBlock(fallthrough_block);
4849 set_cur_block(fallthrough_block);
4852 static void while_statement_to_firm(while_statement_t *statement)
4854 ir_node *jmp = NULL;
4855 if (get_cur_block() != NULL) {
4859 /* create the header block */
4860 ir_node *header_block = new_immBlock();
4862 add_immBlock_pred(header_block, jmp);
4866 ir_node *old_continue_label = continue_label;
4867 ir_node *old_break_label = break_label;
4868 continue_label = header_block;
4871 ir_node *body_block = new_immBlock();
4872 set_cur_block(body_block);
4873 statement_to_firm(statement->body);
4874 ir_node *false_block = break_label;
4876 assert(continue_label == header_block);
4877 continue_label = old_continue_label;
4878 break_label = old_break_label;
4880 if (get_cur_block() != NULL) {
4882 add_immBlock_pred(header_block, jmp);
4885 /* shortcut for while(true) */
4886 if (is_constant_expression(statement->condition)
4887 && fold_constant_to_bool(statement->condition) != 0) {
4888 set_cur_block(header_block);
4889 ir_node *header_jmp = new_Jmp();
4890 add_immBlock_pred(body_block, header_jmp);
4892 keep_alive(body_block);
4893 keep_all_memory(body_block);
4894 set_cur_block(body_block);
4896 if (false_block == NULL) {
4897 false_block = new_immBlock();
4900 /* create the condition */
4901 set_cur_block(header_block);
4903 create_condition_evaluation(statement->condition, body_block,
4907 mature_immBlock(body_block);
4908 mature_immBlock(header_block);
4909 if (false_block != NULL) {
4910 mature_immBlock(false_block);
4913 set_cur_block(false_block);
4916 static void do_while_statement_to_firm(do_while_statement_t *statement)
4918 ir_node *jmp = NULL;
4919 if (get_cur_block() != NULL) {
4923 /* create the header block */
4924 ir_node *header_block = new_immBlock();
4927 ir_node *body_block = new_immBlock();
4929 add_immBlock_pred(body_block, jmp);
4932 ir_node *old_continue_label = continue_label;
4933 ir_node *old_break_label = break_label;
4934 continue_label = header_block;
4937 set_cur_block(body_block);
4938 statement_to_firm(statement->body);
4939 ir_node *false_block = break_label;
4941 assert(continue_label == header_block);
4942 continue_label = old_continue_label;
4943 break_label = old_break_label;
4945 if (get_cur_block() != NULL) {
4946 ir_node *body_jmp = new_Jmp();
4947 add_immBlock_pred(header_block, body_jmp);
4948 mature_immBlock(header_block);
4951 if (false_block == NULL) {
4952 false_block = new_immBlock();
4955 /* create the condition */
4956 set_cur_block(header_block);
4958 create_condition_evaluation(statement->condition, body_block, false_block);
4959 mature_immBlock(body_block);
4960 mature_immBlock(header_block);
4961 mature_immBlock(false_block);
4963 set_cur_block(false_block);
4966 static void for_statement_to_firm(for_statement_t *statement)
4968 ir_node *jmp = NULL;
4970 /* create declarations */
4971 entity_t *entity = statement->scope.entities;
4972 for ( ; entity != NULL; entity = entity->base.next) {
4973 if (!is_declaration(entity))
4976 create_local_declaration(entity);
4979 if (get_cur_block() != NULL) {
4980 entity = statement->scope.entities;
4981 for ( ; entity != NULL; entity = entity->base.next) {
4982 if (!is_declaration(entity))
4985 initialize_local_declaration(entity);
4988 if (statement->initialisation != NULL) {
4989 expression_to_firm(statement->initialisation);
4996 /* create the step block */
4997 ir_node *const step_block = new_immBlock();
4998 set_cur_block(step_block);
4999 if (statement->step != NULL) {
5000 expression_to_firm(statement->step);
5002 ir_node *const step_jmp = new_Jmp();
5004 /* create the header block */
5005 ir_node *const header_block = new_immBlock();
5006 set_cur_block(header_block);
5008 add_immBlock_pred(header_block, jmp);
5010 add_immBlock_pred(header_block, step_jmp);
5012 /* the false block */
5013 ir_node *const false_block = new_immBlock();
5016 ir_node *body_block;
5017 if (statement->body != NULL) {
5018 ir_node *const old_continue_label = continue_label;
5019 ir_node *const old_break_label = break_label;
5020 continue_label = step_block;
5021 break_label = false_block;
5023 body_block = new_immBlock();
5024 set_cur_block(body_block);
5025 statement_to_firm(statement->body);
5027 assert(continue_label == step_block);
5028 assert(break_label == false_block);
5029 continue_label = old_continue_label;
5030 break_label = old_break_label;
5032 if (get_cur_block() != NULL) {
5034 add_immBlock_pred(step_block, jmp);
5037 body_block = step_block;
5040 /* create the condition */
5041 set_cur_block(header_block);
5042 if (statement->condition != NULL) {
5043 create_condition_evaluation(statement->condition, body_block,
5046 keep_alive(header_block);
5047 keep_all_memory(header_block);
5049 add_immBlock_pred(body_block, jmp);
5052 mature_immBlock(body_block);
5053 mature_immBlock(false_block);
5054 mature_immBlock(step_block);
5055 mature_immBlock(header_block);
5056 mature_immBlock(false_block);
5058 set_cur_block(false_block);
5061 static void create_jump_statement(const statement_t *statement,
5062 ir_node *target_block)
5064 if (get_cur_block() == NULL)
5067 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5068 ir_node *jump = new_d_Jmp(dbgi);
5069 add_immBlock_pred(target_block, jump);
5071 set_cur_block(NULL);
5074 static ir_node *get_break_label(void)
5076 if (break_label == NULL) {
5077 break_label = new_immBlock();
5082 static void switch_statement_to_firm(switch_statement_t *statement)
5084 ir_node *first_block = NULL;
5085 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5086 ir_node *cond = NULL;
5088 if (get_cur_block() != NULL) {
5089 ir_node *expression = expression_to_firm(statement->expression);
5090 cond = new_d_Cond(dbgi, expression);
5091 first_block = get_cur_block();
5094 set_cur_block(NULL);
5096 ir_node *const old_switch_cond = current_switch_cond;
5097 ir_node *const old_break_label = break_label;
5098 const bool old_saw_default_label = saw_default_label;
5099 saw_default_label = false;
5100 current_switch_cond = cond;
5102 switch_statement_t *const old_switch = current_switch;
5103 current_switch = statement;
5105 /* determine a free number for the default label */
5106 unsigned long num_cases = 0;
5108 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
5109 if (l->expression == NULL) {
5113 if (l->last_case >= l->first_case)
5114 num_cases += l->last_case - l->first_case + 1;
5115 if (l->last_case > def_nr)
5116 def_nr = l->last_case;
5119 if (def_nr == INT_MAX) {
5120 /* Bad: an overflow will occur, we cannot be sure that the
5121 * maximum + 1 is a free number. Scan the values a second
5122 * time to find a free number.
5124 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
5126 memset(bits, 0, (num_cases + 7) >> 3);
5127 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
5128 if (l->expression == NULL) {
5132 unsigned long start = l->first_case > 0 ? (unsigned long)l->first_case : 0;
5133 if (start < num_cases && l->last_case >= 0) {
5134 unsigned long end = (unsigned long)l->last_case < num_cases ?
5135 (unsigned long)l->last_case : num_cases - 1;
5136 for (unsigned long cns = start; cns <= end; ++cns) {
5137 bits[cns >> 3] |= (1 << (cns & 7));
5141 /* We look at the first num_cases constants:
5142 * Either they are dense, so we took the last (num_cases)
5143 * one, or they are not dense, so we will find one free
5147 for (i = 0; i < num_cases; ++i)
5148 if ((bits[i >> 3] & (1 << (i & 7))) == 0)
5156 statement->default_proj_nr = def_nr;
5158 if (statement->body != NULL) {
5159 statement_to_firm(statement->body);
5162 if (get_cur_block() != NULL) {
5163 ir_node *jmp = new_Jmp();
5164 add_immBlock_pred(get_break_label(), jmp);
5167 if (!saw_default_label && first_block != NULL) {
5168 set_cur_block(first_block);
5169 ir_node *const proj = new_d_defaultProj(dbgi, cond,
5170 statement->default_proj_nr);
5171 add_immBlock_pred(get_break_label(), proj);
5174 if (break_label != NULL) {
5175 mature_immBlock(break_label);
5177 set_cur_block(break_label);
5179 assert(current_switch_cond == cond);
5180 current_switch = old_switch;
5181 current_switch_cond = old_switch_cond;
5182 break_label = old_break_label;
5183 saw_default_label = old_saw_default_label;
5186 static void case_label_to_firm(const case_label_statement_t *statement)
5188 if (statement->is_empty_range)
5191 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5193 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
5196 ir_node *block = new_immBlock();
5198 if (current_switch_cond != NULL) {
5199 set_cur_block(get_nodes_block(current_switch_cond));
5200 if (statement->expression != NULL) {
5201 long pn = statement->first_case;
5202 long end_pn = statement->last_case;
5203 assert(pn <= end_pn);
5204 /* create jumps for all cases in the given range */
5206 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
5207 add_immBlock_pred(block, proj);
5208 } while (pn++ < end_pn);
5210 saw_default_label = true;
5211 proj = new_d_defaultProj(dbgi, current_switch_cond,
5212 current_switch->default_proj_nr);
5214 add_immBlock_pred(block, proj);
5218 if (fallthrough != NULL) {
5219 add_immBlock_pred(block, fallthrough);
5221 mature_immBlock(block);
5222 set_cur_block(block);
5224 if (statement->statement != NULL) {
5225 statement_to_firm(statement->statement);
5229 static void label_to_firm(const label_statement_t *statement)
5231 ir_node *block = get_label_block(statement->label);
5233 if (get_cur_block() != NULL) {
5234 ir_node *jmp = new_Jmp();
5235 add_immBlock_pred(block, jmp);
5238 set_cur_block(block);
5240 keep_all_memory(block);
5242 if (statement->statement != NULL) {
5243 statement_to_firm(statement->statement);
5247 static void goto_to_firm(const goto_statement_t *statement)
5249 if (get_cur_block() == NULL)
5252 if (statement->expression) {
5253 ir_node *irn = expression_to_firm(statement->expression);
5254 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5255 ir_node *ijmp = new_d_IJmp(dbgi, irn);
5257 set_irn_link(ijmp, ijmp_list);
5260 ir_node *block = get_label_block(statement->label);
5261 ir_node *jmp = new_Jmp();
5262 add_immBlock_pred(block, jmp);
5264 set_cur_block(NULL);
5267 static void asm_statement_to_firm(const asm_statement_t *statement)
5269 bool needs_memory = false;
5271 if (statement->is_volatile) {
5272 needs_memory = true;
5275 size_t n_clobbers = 0;
5276 asm_clobber_t *clobber = statement->clobbers;
5277 for ( ; clobber != NULL; clobber = clobber->next) {
5278 const char *clobber_str = clobber->clobber.begin;
5280 if (!be_is_valid_clobber(clobber_str)) {
5281 errorf(&statement->base.source_position,
5282 "invalid clobber '%s' specified", clobber->clobber);
5286 if (strcmp(clobber_str, "memory") == 0) {
5287 needs_memory = true;
5291 ident *id = new_id_from_str(clobber_str);
5292 obstack_ptr_grow(&asm_obst, id);
5295 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
5296 ident **clobbers = NULL;
5297 if (n_clobbers > 0) {
5298 clobbers = obstack_finish(&asm_obst);
5301 size_t n_inputs = 0;
5302 asm_argument_t *argument = statement->inputs;
5303 for ( ; argument != NULL; argument = argument->next)
5305 size_t n_outputs = 0;
5306 argument = statement->outputs;
5307 for ( ; argument != NULL; argument = argument->next)
5310 unsigned next_pos = 0;
5312 ir_node *ins[n_inputs + n_outputs + 1];
5315 ir_asm_constraint tmp_in_constraints[n_outputs];
5317 const expression_t *out_exprs[n_outputs];
5318 ir_node *out_addrs[n_outputs];
5319 size_t out_size = 0;
5321 argument = statement->outputs;
5322 for ( ; argument != NULL; argument = argument->next) {
5323 const char *constraints = argument->constraints.begin;
5324 asm_constraint_flags_t asm_flags
5325 = be_parse_asm_constraints(constraints);
5327 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5328 warningf(&statement->base.source_position,
5329 "some constraints in '%s' are not supported", constraints);
5331 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5332 errorf(&statement->base.source_position,
5333 "some constraints in '%s' are invalid", constraints);
5336 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
5337 errorf(&statement->base.source_position,
5338 "no write flag specified for output constraints '%s'",
5343 unsigned pos = next_pos++;
5344 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5345 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5346 expression_t *expr = argument->expression;
5347 ir_node *addr = expression_to_addr(expr);
5348 /* in+output, construct an artifical same_as constraint on the
5350 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
5352 ir_node *value = get_value_from_lvalue(expr, addr);
5354 snprintf(buf, sizeof(buf), "%u", (unsigned) out_size);
5356 ir_asm_constraint constraint;
5357 constraint.pos = pos;
5358 constraint.constraint = new_id_from_str(buf);
5359 constraint.mode = get_ir_mode_storage(expr->base.type);
5360 tmp_in_constraints[in_size] = constraint;
5361 ins[in_size] = value;
5366 out_exprs[out_size] = expr;
5367 out_addrs[out_size] = addr;
5369 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5370 /* pure memory ops need no input (but we have to make sure we
5371 * attach to the memory) */
5372 assert(! (asm_flags &
5373 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5374 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5375 needs_memory = true;
5377 /* we need to attach the address to the inputs */
5378 expression_t *expr = argument->expression;
5380 ir_asm_constraint constraint;
5381 constraint.pos = pos;
5382 constraint.constraint = new_id_from_str(constraints);
5383 constraint.mode = NULL;
5384 tmp_in_constraints[in_size] = constraint;
5386 ins[in_size] = expression_to_addr(expr);
5390 errorf(&statement->base.source_position,
5391 "only modifiers but no place set in constraints '%s'",
5396 ir_asm_constraint constraint;
5397 constraint.pos = pos;
5398 constraint.constraint = new_id_from_str(constraints);
5399 constraint.mode = get_ir_mode_storage(argument->expression->base.type);
5401 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5403 assert(obstack_object_size(&asm_obst)
5404 == out_size * sizeof(ir_asm_constraint));
5405 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
5408 obstack_grow(&asm_obst, tmp_in_constraints,
5409 in_size * sizeof(tmp_in_constraints[0]));
5410 /* find and count input and output arguments */
5411 argument = statement->inputs;
5412 for ( ; argument != NULL; argument = argument->next) {
5413 const char *constraints = argument->constraints.begin;
5414 asm_constraint_flags_t asm_flags
5415 = be_parse_asm_constraints(constraints);
5417 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5418 errorf(&statement->base.source_position,
5419 "some constraints in '%s' are not supported", constraints);
5422 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5423 errorf(&statement->base.source_position,
5424 "some constraints in '%s' are invalid", constraints);
5427 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
5428 errorf(&statement->base.source_position,
5429 "write flag specified for input constraints '%s'",
5435 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5436 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5437 /* we can treat this as "normal" input */
5438 input = expression_to_firm(argument->expression);
5439 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5440 /* pure memory ops need no input (but we have to make sure we
5441 * attach to the memory) */
5442 assert(! (asm_flags &
5443 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5444 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5445 needs_memory = true;
5446 input = expression_to_addr(argument->expression);
5448 errorf(&statement->base.source_position,
5449 "only modifiers but no place set in constraints '%s'",
5454 ir_asm_constraint constraint;
5455 constraint.pos = next_pos++;
5456 constraint.constraint = new_id_from_str(constraints);
5457 constraint.mode = get_irn_mode(input);
5459 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5460 ins[in_size++] = input;
5464 ir_asm_constraint constraint;
5465 constraint.pos = next_pos++;
5466 constraint.constraint = new_id_from_str("");
5467 constraint.mode = mode_M;
5469 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5470 ins[in_size++] = get_store();
5473 assert(obstack_object_size(&asm_obst)
5474 == in_size * sizeof(ir_asm_constraint));
5475 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
5477 /* create asm node */
5478 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5480 ident *asm_text = new_id_from_str(statement->asm_text.begin);
5482 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
5483 out_size, output_constraints,
5484 n_clobbers, clobbers, asm_text);
5486 if (statement->is_volatile) {
5487 set_irn_pinned(node, op_pin_state_pinned);
5489 set_irn_pinned(node, op_pin_state_floats);
5492 /* create output projs & connect them */
5494 ir_node *projm = new_Proj(node, mode_M, out_size);
5499 for (i = 0; i < out_size; ++i) {
5500 const expression_t *out_expr = out_exprs[i];
5502 ir_mode *mode = get_ir_mode_storage(out_expr->base.type);
5503 ir_node *proj = new_Proj(node, mode, pn);
5504 ir_node *addr = out_addrs[i];
5506 set_value_for_expression_addr(out_expr, proj, addr);
5510 static void ms_try_statement_to_firm(ms_try_statement_t *statement)
5512 statement_to_firm(statement->try_statement);
5513 warningf(&statement->base.source_position, "structured exception handling ignored");
5516 static void leave_statement_to_firm(leave_statement_t *statement)
5518 errorf(&statement->base.source_position, "__leave not supported yet");
5522 * Transform a statement.
5524 static void statement_to_firm(statement_t *statement)
5527 assert(!statement->base.transformed);
5528 statement->base.transformed = true;
5531 switch (statement->kind) {
5532 case STATEMENT_INVALID:
5533 panic("invalid statement found");
5534 case STATEMENT_EMPTY:
5537 case STATEMENT_COMPOUND:
5538 compound_statement_to_firm(&statement->compound);
5540 case STATEMENT_RETURN:
5541 return_statement_to_firm(&statement->returns);
5543 case STATEMENT_EXPRESSION:
5544 expression_statement_to_firm(&statement->expression);
5547 if_statement_to_firm(&statement->ifs);
5549 case STATEMENT_WHILE:
5550 while_statement_to_firm(&statement->whiles);
5552 case STATEMENT_DO_WHILE:
5553 do_while_statement_to_firm(&statement->do_while);
5555 case STATEMENT_DECLARATION:
5556 declaration_statement_to_firm(&statement->declaration);
5558 case STATEMENT_BREAK:
5559 create_jump_statement(statement, get_break_label());
5561 case STATEMENT_CONTINUE:
5562 create_jump_statement(statement, continue_label);
5564 case STATEMENT_SWITCH:
5565 switch_statement_to_firm(&statement->switchs);
5567 case STATEMENT_CASE_LABEL:
5568 case_label_to_firm(&statement->case_label);
5571 for_statement_to_firm(&statement->fors);
5573 case STATEMENT_LABEL:
5574 label_to_firm(&statement->label);
5576 case STATEMENT_GOTO:
5577 goto_to_firm(&statement->gotos);
5580 asm_statement_to_firm(&statement->asms);
5582 case STATEMENT_MS_TRY:
5583 ms_try_statement_to_firm(&statement->ms_try);
5585 case STATEMENT_LEAVE:
5586 leave_statement_to_firm(&statement->leave);
5589 panic("statement not implemented");
5592 static int count_local_variables(const entity_t *entity,
5593 const entity_t *const last)
5596 entity_t const *const end = last != NULL ? last->base.next : NULL;
5597 for (; entity != end; entity = entity->base.next) {
5601 if (entity->kind == ENTITY_VARIABLE) {
5602 type = skip_typeref(entity->declaration.type);
5603 address_taken = entity->variable.address_taken;
5604 } else if (entity->kind == ENTITY_PARAMETER) {
5605 type = skip_typeref(entity->declaration.type);
5606 address_taken = entity->parameter.address_taken;
5611 if (!address_taken && is_type_scalar(type))
5617 static void count_local_variables_in_stmt(statement_t *stmt, void *const env)
5619 int *const count = env;
5621 switch (stmt->kind) {
5622 case STATEMENT_DECLARATION: {
5623 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5624 *count += count_local_variables(decl_stmt->declarations_begin,
5625 decl_stmt->declarations_end);
5630 *count += count_local_variables(stmt->fors.scope.entities, NULL);
5639 * Return the number of local (alias free) variables used by a function.
5641 static int get_function_n_local_vars(entity_t *entity)
5643 const function_t *function = &entity->function;
5646 /* count parameters */
5647 count += count_local_variables(function->parameters.entities, NULL);
5649 /* count local variables declared in body */
5650 walk_statements(function->statement, count_local_variables_in_stmt, &count);
5655 * Build Firm code for the parameters of a function.
5657 static void initialize_function_parameters(entity_t *entity)
5659 assert(entity->kind == ENTITY_FUNCTION);
5660 ir_graph *irg = current_ir_graph;
5661 ir_node *args = get_irg_args(irg);
5662 ir_type *function_irtype = get_ir_type(entity->declaration.type);
5663 int first_param_nr = 0;
5665 if (entity->function.need_closure) {
5666 /* add an extra parameter for the static link */
5667 entity->function.static_link = new_r_Proj(args, mode_P_data, 0);
5672 entity_t *parameter = entity->function.parameters.entities;
5673 for ( ; parameter != NULL; parameter = parameter->base.next, ++n) {
5674 if (parameter->kind != ENTITY_PARAMETER)
5677 assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN);
5678 type_t *type = skip_typeref(parameter->declaration.type);
5680 bool needs_entity = parameter->parameter.address_taken;
5681 assert(!is_type_array(type));
5682 if (is_type_compound(type)) {
5683 needs_entity = true;
5687 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5688 ident *id = new_id_from_str(parameter->base.symbol->string);
5689 set_entity_ident(entity, id);
5691 parameter->declaration.kind
5692 = DECLARATION_KIND_PARAMETER_ENTITY;
5693 parameter->parameter.v.entity = entity;
5697 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5698 ir_mode *param_mode = get_type_mode(param_irtype);
5700 long pn = n + first_param_nr;
5701 ir_node *value = new_r_Proj(args, param_mode, pn);
5703 ir_mode *mode = get_ir_mode_storage(type);
5704 value = create_conv(NULL, value, mode);
5705 value = do_strict_conv(NULL, value);
5707 parameter->declaration.kind = DECLARATION_KIND_PARAMETER;
5708 parameter->parameter.v.value_number = next_value_number_function;
5709 set_irg_loc_description(current_ir_graph, next_value_number_function,
5711 ++next_value_number_function;
5713 set_value(parameter->parameter.v.value_number, value);
5718 * Handle additional decl modifiers for IR-graphs
5720 * @param irg the IR-graph
5721 * @param dec_modifiers additional modifiers
5723 static void handle_decl_modifier_irg(ir_graph_ptr irg,
5724 decl_modifiers_t decl_modifiers)
5726 if (decl_modifiers & DM_RETURNS_TWICE) {
5727 /* TRUE if the declaration includes __attribute__((returns_twice)) */
5728 set_irg_additional_property(irg, mtp_property_returns_twice);
5730 if (decl_modifiers & DM_NORETURN) {
5731 /* TRUE if the declaration includes the Microsoft
5732 __declspec(noreturn) specifier. */
5733 set_irg_additional_property(irg, mtp_property_noreturn);
5735 if (decl_modifiers & DM_NOTHROW) {
5736 /* TRUE if the declaration includes the Microsoft
5737 __declspec(nothrow) specifier. */
5738 set_irg_additional_property(irg, mtp_property_nothrow);
5740 if (decl_modifiers & DM_NAKED) {
5741 /* TRUE if the declaration includes the Microsoft
5742 __declspec(naked) specifier. */
5743 set_irg_additional_property(irg, mtp_property_naked);
5745 if (decl_modifiers & DM_FORCEINLINE) {
5746 /* TRUE if the declaration includes the
5747 Microsoft __forceinline specifier. */
5748 set_irg_inline_property(irg, irg_inline_forced);
5750 if (decl_modifiers & DM_NOINLINE) {
5751 /* TRUE if the declaration includes the Microsoft
5752 __declspec(noinline) specifier. */
5753 set_irg_inline_property(irg, irg_inline_forbidden);
5757 static void add_function_pointer(ir_type *segment, ir_entity *method,
5758 const char *unique_template)
5760 ir_type *method_type = get_entity_type(method);
5761 ir_type *ptr_type = new_type_pointer(method_type);
5763 /* these entities don't really have a name but firm only allows
5765 * Note that we mustn't give these entities a name since for example
5766 * Mach-O doesn't allow them. */
5767 ident *ide = id_unique(unique_template);
5768 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5769 ir_graph *irg = get_const_code_irg();
5770 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5773 set_entity_ld_ident(ptr, new_id_from_chars("", 0));
5774 set_entity_compiler_generated(ptr, 1);
5775 set_entity_visibility(ptr, ir_visibility_local);
5776 add_entity_linkage(ptr, IR_LINKAGE_CONSTANT|IR_LINKAGE_HIDDEN_USER);
5777 set_atomic_ent_value(ptr, val);
5781 * Generate possible IJmp branches to a given label block.
5783 static void gen_ijmp_branches(ir_node *block)
5786 for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) {
5787 add_immBlock_pred(block, ijmp);
5792 * Create code for a function and all inner functions.
5794 * @param entity the function entity
5796 static void create_function(entity_t *entity)
5798 assert(entity->kind == ENTITY_FUNCTION);
5799 ir_entity *function_entity = get_function_entity(entity, current_outer_frame);
5801 if (entity->function.statement == NULL)
5804 if (is_main(entity) && firm_opt.os_support == OS_SUPPORT_MINGW) {
5805 prepare_main_collect2(entity);
5808 inner_functions = NULL;
5809 current_trampolines = NULL;
5811 if (entity->declaration.modifiers & DM_CONSTRUCTOR) {
5812 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5813 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5815 if (entity->declaration.modifiers & DM_DESTRUCTOR) {
5816 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5817 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5820 current_function_entity = entity;
5821 current_function_name = NULL;
5822 current_funcsig = NULL;
5824 assert(all_labels == NULL);
5825 all_labels = NEW_ARR_F(label_t *, 0);
5828 int n_local_vars = get_function_n_local_vars(entity);
5829 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5831 ir_graph *old_current_function = current_function;
5832 current_function = irg;
5834 set_irg_fp_model(irg, firm_opt.fp_model);
5835 tarval_enable_fp_ops(1);
5836 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5838 ir_node *first_block = get_cur_block();
5840 /* set inline flags */
5841 if (entity->function.is_inline)
5842 set_irg_inline_property(irg, irg_inline_recomended);
5843 handle_decl_modifier_irg(irg, entity->declaration.modifiers);
5845 next_value_number_function = 0;
5846 initialize_function_parameters(entity);
5847 current_static_link = entity->function.static_link;
5849 statement_to_firm(entity->function.statement);
5851 ir_node *end_block = get_irg_end_block(irg);
5853 /* do we have a return statement yet? */
5854 if (get_cur_block() != NULL) {
5855 type_t *type = skip_typeref(entity->declaration.type);
5856 assert(is_type_function(type));
5857 const function_type_t *func_type = &type->function;
5858 const type_t *return_type
5859 = skip_typeref(func_type->return_type);
5862 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5863 ret = new_Return(get_store(), 0, NULL);
5866 if (is_type_scalar(return_type)) {
5867 mode = get_ir_mode_storage(func_type->return_type);
5873 /* ยง5.1.2.2.3 main implicitly returns 0 */
5874 if (is_main(entity)) {
5875 in[0] = new_Const(get_mode_null(mode));
5877 in[0] = new_Unknown(mode);
5879 ret = new_Return(get_store(), 1, in);
5881 add_immBlock_pred(end_block, ret);
5884 bool has_computed_gotos = false;
5885 for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
5886 label_t *label = all_labels[i];
5887 if (label->address_taken) {
5888 gen_ijmp_branches(label->block);
5889 has_computed_gotos = true;
5891 mature_immBlock(label->block);
5893 if (has_computed_gotos) {
5894 /* if we have computed goto's in the function, we cannot inline it */
5895 if (get_irg_inline_property(irg) >= irg_inline_recomended) {
5896 warningf(&entity->base.source_position,
5897 "function '%Y' can never be inlined because it contains a computed goto",
5898 entity->base.symbol);
5900 set_irg_inline_property(irg, irg_inline_forbidden);
5903 DEL_ARR_F(all_labels);
5906 mature_immBlock(first_block);
5907 mature_immBlock(end_block);
5909 irg_finalize_cons(irg);
5911 /* finalize the frame type */
5912 ir_type *frame_type = get_irg_frame_type(irg);
5913 int n = get_compound_n_members(frame_type);
5916 for (int i = 0; i < n; ++i) {
5917 ir_entity *entity = get_compound_member(frame_type, i);
5918 ir_type *entity_type = get_entity_type(entity);
5920 int align = get_type_alignment_bytes(entity_type);
5921 if (align > align_all)
5925 misalign = offset % align;
5927 offset += align - misalign;
5931 set_entity_offset(entity, offset);
5932 offset += get_type_size_bytes(entity_type);
5934 set_type_size_bytes(frame_type, offset);
5935 set_type_alignment_bytes(frame_type, align_all);
5938 current_function = old_current_function;
5940 if (current_trampolines != NULL) {
5941 DEL_ARR_F(current_trampolines);
5942 current_trampolines = NULL;
5945 /* create inner functions if any */
5946 entity_t **inner = inner_functions;
5947 if (inner != NULL) {
5948 ir_type *rem_outer_frame = current_outer_frame;
5949 current_outer_frame = get_irg_frame_type(current_ir_graph);
5950 ir_type *rem_outer_value_type = current_outer_value_type;
5951 current_outer_value_type = get_irg_value_param_type(current_ir_graph);
5952 for (int i = ARR_LEN(inner) - 1; i >= 0; --i) {
5953 create_function(inner[i]);
5957 current_outer_value_type = rem_outer_value_type;
5958 current_outer_frame = rem_outer_frame;
5962 static void scope_to_firm(scope_t *scope)
5964 /* first pass: create declarations */
5965 entity_t *entity = scope->entities;
5966 for ( ; entity != NULL; entity = entity->base.next) {
5967 if (entity->base.symbol == NULL)
5970 if (entity->kind == ENTITY_FUNCTION) {
5971 if (entity->function.btk != bk_none) {
5972 /* builtins have no representation */
5975 (void)get_function_entity(entity, NULL);
5976 } else if (entity->kind == ENTITY_VARIABLE) {
5977 create_global_variable(entity);
5978 } else if (entity->kind == ENTITY_NAMESPACE) {
5979 scope_to_firm(&entity->namespacee.members);
5983 /* second pass: create code/initializers */
5984 entity = scope->entities;
5985 for ( ; entity != NULL; entity = entity->base.next) {
5986 if (entity->base.symbol == NULL)
5989 if (entity->kind == ENTITY_FUNCTION) {
5990 if (entity->function.btk != bk_none) {
5991 /* builtins have no representation */
5994 create_function(entity);
5995 } else if (entity->kind == ENTITY_VARIABLE) {
5996 assert(entity->declaration.kind
5997 == DECLARATION_KIND_GLOBAL_VARIABLE);
5998 current_ir_graph = get_const_code_irg();
5999 create_variable_initializer(entity);
6004 void init_ast2firm(void)
6006 obstack_init(&asm_obst);
6007 init_atomic_modes();
6009 ir_set_debug_retrieve(dbg_retrieve);
6010 ir_set_type_debug_retrieve(dbg_print_type_dbg_info);
6012 /* OS option must be set to the backend */
6013 switch (firm_opt.os_support) {
6014 case OS_SUPPORT_MINGW:
6015 create_ld_ident = create_name_win32;
6017 case OS_SUPPORT_LINUX:
6018 create_ld_ident = create_name_linux_elf;
6020 case OS_SUPPORT_MACHO:
6021 create_ld_ident = create_name_macho;
6024 panic("unexpected OS support mode");
6027 /* create idents for all known runtime functions */
6028 for (size_t i = 0; i < lengthof(rts_data); ++i) {
6029 rts_idents[i] = new_id_from_str(rts_data[i].name);
6032 entitymap_init(&entitymap);
6035 static void init_ir_types(void)
6037 static int ir_types_initialized = 0;
6038 if (ir_types_initialized)
6040 ir_types_initialized = 1;
6042 ir_type_int = get_ir_type(type_int);
6043 ir_type_char = get_ir_type(type_char);
6044 ir_type_const_char = get_ir_type(type_const_char);
6045 ir_type_wchar_t = get_ir_type(type_wchar_t);
6046 ir_type_void = get_ir_type(type_void);
6048 be_params = be_get_backend_param();
6049 mode_float_arithmetic = be_params->mode_float_arithmetic;
6051 stack_param_align = be_params->stack_param_align;
6054 void exit_ast2firm(void)
6056 entitymap_destroy(&entitymap);
6057 obstack_free(&asm_obst, NULL);
6060 static void global_asm_to_firm(statement_t *s)
6062 for (; s != NULL; s = s->base.next) {
6063 assert(s->kind == STATEMENT_ASM);
6065 char const *const text = s->asms.asm_text.begin;
6066 size_t size = s->asms.asm_text.size;
6068 /* skip the last \0 */
6069 if (text[size - 1] == '\0')
6072 ident *const id = new_id_from_chars(text, size);
6077 void translation_unit_to_firm(translation_unit_t *unit)
6079 /* initialize firm arithmetic */
6080 tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP);
6082 /* just to be sure */
6083 continue_label = NULL;
6085 current_switch_cond = NULL;
6086 current_translation_unit = unit;
6090 scope_to_firm(&unit->scope);
6091 global_asm_to_firm(unit->global_asm);
6093 current_ir_graph = NULL;
6094 current_translation_unit = NULL;