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 }, /* HMM, man say its C99 */
872 { rts_mempcpy, 1, "mempcpy", 3, _GNUC },
873 { rts_memmove, 1, "memmove", 3, _C89 }, /* HMM, man say its C99 */
874 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
875 { rts_memcmp, 1, "memcmp", 3, _C89 }, /* HMM, man say its C99 */
878 static ident *rts_idents[lengthof(rts_data)];
880 static ident* (*create_ld_ident)(entity_t*) = create_name_linux_elf;
883 * Handle GNU attributes for entities
885 * @param ent the entity
886 * @param decl the routine declaration
888 static void handle_decl_modifiers(ir_entity *irentity, entity_t *entity)
890 assert(is_declaration(entity));
891 decl_modifiers_t modifiers = entity->declaration.modifiers;
893 if (is_method_entity(irentity)) {
894 if (modifiers & DM_PURE) {
895 set_entity_additional_property(irentity, mtp_property_pure);
897 if (modifiers & DM_CONST) {
898 set_entity_additional_property(irentity, mtp_property_const);
899 have_const_functions = true;
902 if (modifiers & DM_USED) {
903 add_entity_linkage(irentity, IR_LINKAGE_HIDDEN_USER);
905 if (modifiers & DM_WEAK) {
906 add_entity_linkage(irentity, IR_LINKAGE_WEAK);
910 static bool is_main(entity_t *entity)
912 static symbol_t *sym_main = NULL;
913 if (sym_main == NULL) {
914 sym_main = symbol_table_insert("main");
917 if (entity->base.symbol != sym_main)
919 /* must be in outermost scope */
920 if (entity->base.parent_scope != ¤t_translation_unit->scope)
927 * Creates an entity representing a function.
929 * @param entity the function declaration/definition
930 * @param owner_type the owner type of this function, NULL
931 * for global functions
933 static ir_entity *get_function_entity(entity_t *entity, ir_type *owner_type)
935 assert(entity->kind == ENTITY_FUNCTION);
936 if (entity->function.irentity != NULL) {
937 return entity->function.irentity;
940 entity_t *original_entity = entity;
941 if (entity->function.btk != bk_none) {
942 entity = get_builtin_replacement(entity);
947 if (is_main(entity)) {
948 /* force main to C linkage */
949 type_t *type = entity->declaration.type;
950 assert(is_type_function(type));
951 if (type->function.linkage != LINKAGE_C) {
952 type_t *new_type = duplicate_type(type);
953 new_type->function.linkage = LINKAGE_C;
954 type = identify_new_type(new_type);
955 entity->declaration.type = type;
959 symbol_t *symbol = entity->base.symbol;
960 ident *id = new_id_from_str(symbol->string);
962 /* already an entity defined? */
963 ir_entity *irentity = entitymap_get(&entitymap, symbol);
964 bool const has_body = entity->function.statement != NULL;
965 if (irentity != NULL) {
966 if (get_entity_visibility(irentity) == ir_visibility_external
968 set_entity_visibility(irentity, ir_visibility_default);
973 ir_type *ir_type_method;
974 if (entity->function.need_closure)
975 ir_type_method = create_method_type(&entity->declaration.type->function, true);
977 ir_type_method = get_ir_type(entity->declaration.type);
979 bool nested_function = false;
980 if (owner_type == NULL)
981 owner_type = get_glob_type();
983 nested_function = true;
985 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
986 irentity = new_d_entity(owner_type, id, ir_type_method, dbgi);
990 ld_id = id_unique("inner.%u");
992 ld_id = create_ld_ident(entity);
993 set_entity_ld_ident(irentity, ld_id);
995 handle_decl_modifiers(irentity, entity);
997 if (! nested_function) {
998 /* static inline => local
999 * extern inline => local
1000 * inline without definition => local
1001 * inline with definition => external_visible */
1002 storage_class_tag_t const storage_class
1003 = (storage_class_tag_t) entity->declaration.storage_class;
1004 bool const is_inline = entity->function.is_inline;
1006 if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
1007 set_entity_visibility(irentity, ir_visibility_default);
1008 } else if (storage_class == STORAGE_CLASS_STATIC ||
1009 (is_inline && has_body)) {
1010 set_entity_visibility(irentity, ir_visibility_local);
1011 } else if (has_body) {
1012 set_entity_visibility(irentity, ir_visibility_default);
1014 set_entity_visibility(irentity, ir_visibility_external);
1017 /* nested functions are always local */
1018 set_entity_visibility(irentity, ir_visibility_local);
1021 /* We should check for file scope here, but as long as we compile C only
1022 this is not needed. */
1023 if (! firm_opt.freestanding && !has_body) {
1024 /* check for a known runtime function */
1025 for (size_t i = 0; i < lengthof(rts_data); ++i) {
1026 if (id != rts_idents[i])
1029 /* ignore those rts functions not necessary needed for current mode */
1030 if ((c_mode & rts_data[i].flags) == 0)
1032 assert(rts_entities[rts_data[i].id] == NULL);
1033 rts_entities[rts_data[i].id] = irentity;
1037 entitymap_insert(&entitymap, symbol, irentity);
1040 original_entity->declaration.kind = DECLARATION_KIND_FUNCTION;
1041 original_entity->function.irentity = irentity;
1047 * Creates a SymConst for a given entity.
1049 * @param dbgi debug info
1050 * @param mode the (reference) mode for the SymConst
1051 * @param entity the entity
1053 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1056 assert(entity != NULL);
1057 union symconst_symbol sym;
1058 sym.entity_p = entity;
1059 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1062 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1064 ir_mode *value_mode = get_irn_mode(value);
1066 if (value_mode == dest_mode || is_Bad(value))
1069 if (dest_mode == mode_b) {
1070 ir_node *zero = new_Const(get_mode_null(value_mode));
1071 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1072 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1076 return new_d_Conv(dbgi, value, dest_mode);
1080 * Creates a SymConst node representing a wide string literal.
1082 * @param literal the wide string literal
1084 static ir_node *wide_string_literal_to_firm(
1085 const string_literal_expression_t *literal)
1087 ir_type *const global_type = get_glob_type();
1088 ir_type *const elem_type = ir_type_wchar_t;
1089 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1090 ir_type *const type = new_type_array(1, elem_type);
1092 ident *const id = id_unique("str.%u");
1093 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1094 set_entity_ld_ident(entity, id);
1095 set_entity_visibility(entity, ir_visibility_private);
1096 add_entity_linkage(entity, IR_LINKAGE_CONSTANT);
1098 ir_mode *const mode = get_type_mode(elem_type);
1099 const size_t slen = wstrlen(&literal->value);
1101 set_array_lower_bound_int(type, 0, 0);
1102 set_array_upper_bound_int(type, 0, slen);
1103 set_type_size_bytes(type, slen * get_mode_size_bytes(mode));
1104 set_type_state(type, layout_fixed);
1106 ir_initializer_t *initializer = create_initializer_compound(slen);
1107 const char *p = literal->value.begin;
1108 for (size_t i = 0; i < slen; ++i) {
1109 assert(p < literal->value.begin + literal->value.size);
1110 utf32 v = read_utf8_char(&p);
1111 tarval *tv = new_tarval_from_long(v, mode);
1112 ir_initializer_t *val = create_initializer_tarval(tv);
1113 set_initializer_compound_value(initializer, i, val);
1115 set_entity_initializer(entity, initializer);
1117 return create_symconst(dbgi, mode_P_data, entity);
1121 * Creates a SymConst node representing a string constant.
1123 * @param src_pos the source position of the string constant
1124 * @param id_prefix a prefix for the name of the generated string constant
1125 * @param value the value of the string constant
1127 static ir_node *string_to_firm(const source_position_t *const src_pos,
1128 const char *const id_prefix,
1129 const string_t *const value)
1131 ir_type *const global_type = get_glob_type();
1132 dbg_info *const dbgi = get_dbg_info(src_pos);
1133 ir_type *const type = new_type_array(1, ir_type_const_char);
1135 ident *const id = id_unique(id_prefix);
1136 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1137 set_entity_ld_ident(entity, id);
1138 set_entity_visibility(entity, ir_visibility_private);
1139 add_entity_linkage(entity, IR_LINKAGE_CONSTANT);
1141 ir_type *const elem_type = ir_type_const_char;
1142 ir_mode *const mode = get_type_mode(elem_type);
1144 const char* const string = value->begin;
1145 const size_t slen = value->size;
1147 set_array_lower_bound_int(type, 0, 0);
1148 set_array_upper_bound_int(type, 0, slen);
1149 set_type_size_bytes(type, slen);
1150 set_type_state(type, layout_fixed);
1152 ir_initializer_t *initializer = create_initializer_compound(slen);
1153 for (size_t i = 0; i < slen; ++i) {
1154 tarval *tv = new_tarval_from_long(string[i], mode);
1155 ir_initializer_t *val = create_initializer_tarval(tv);
1156 set_initializer_compound_value(initializer, i, val);
1158 set_entity_initializer(entity, initializer);
1160 return create_symconst(dbgi, mode_P_data, entity);
1163 static bool try_create_integer(literal_expression_t *literal,
1164 type_t *type, unsigned char base)
1166 const char *string = literal->value.begin;
1167 size_t size = literal->value.size;
1169 assert(type->kind == TYPE_ATOMIC);
1170 atomic_type_kind_t akind = type->atomic.akind;
1172 ir_mode *mode = atomic_modes[akind];
1173 tarval *tv = new_integer_tarval_from_str(string, size, 1, base, mode);
1174 if (tv == tarval_bad)
1177 literal->base.type = type;
1178 literal->target_value = tv;
1182 static void create_integer_tarval(literal_expression_t *literal)
1186 symbol_t *suffix = literal->suffix;
1188 if (suffix != NULL) {
1189 for (const char *c = suffix->string; *c != '\0'; ++c) {
1190 if (*c == 'u' || *c == 'U') { ++us; }
1191 if (*c == 'l' || *c == 'L') { ++ls; }
1195 unsigned char base = 10;
1196 if (literal->base.kind == EXPR_LITERAL_INTEGER_OCTAL) {
1198 } else if (literal->base.kind == EXPR_LITERAL_INTEGER_HEXADECIMAL) {
1201 assert(literal->base.kind == EXPR_LITERAL_INTEGER);
1204 tarval_int_overflow_mode_t old_mode = tarval_get_integer_overflow_mode();
1206 /* now try if the constant is small enough for some types */
1207 tarval_set_integer_overflow_mode(TV_OVERFLOW_BAD);
1209 if (us == 0 && try_create_integer(literal, type_int, base))
1211 if ((us == 1 || base != 10)
1212 && try_create_integer(literal, type_unsigned_int, base))
1216 if (us == 0 && try_create_integer(literal, type_long, base))
1218 if ((us == 1 || base != 10)
1219 && try_create_integer(literal, type_unsigned_long, base))
1222 /* last try? then we should not report tarval_bad */
1223 if (us != 1 && base == 10)
1224 tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP);
1225 if (us == 0 && try_create_integer(literal, type_long_long, base))
1229 assert(us == 1 || base != 10);
1230 tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP);
1231 bool res = try_create_integer(literal, type_unsigned_long_long, base);
1233 panic("internal error when parsing number literal");
1236 tarval_set_integer_overflow_mode(old_mode);
1239 void determine_literal_type(literal_expression_t *literal)
1241 switch (literal->base.kind) {
1242 case EXPR_LITERAL_INTEGER:
1243 case EXPR_LITERAL_INTEGER_OCTAL:
1244 case EXPR_LITERAL_INTEGER_HEXADECIMAL:
1245 create_integer_tarval(literal);
1253 * Creates a Const node representing a constant.
1255 static ir_node *literal_to_firm(const literal_expression_t *literal)
1257 type_t *type = skip_typeref(literal->base.type);
1258 ir_mode *mode = get_ir_mode_storage(type);
1259 const char *string = literal->value.begin;
1260 size_t size = literal->value.size;
1263 switch (literal->base.kind) {
1264 case EXPR_LITERAL_WIDE_CHARACTER: {
1265 utf32 v = read_utf8_char(&string);
1267 size_t len = snprintf(buf, sizeof(buf), UTF32_PRINTF_FORMAT, v);
1269 tv = new_tarval_from_str(buf, len, mode);
1272 case EXPR_LITERAL_CHARACTER: {
1274 if (size == 1 && char_is_signed) {
1275 v = (signed char)string[0];
1278 for (size_t i = 0; i < size; ++i) {
1279 v = (v << 8) | ((unsigned char)string[i]);
1283 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1285 tv = new_tarval_from_str(buf, len, mode);
1288 case EXPR_LITERAL_INTEGER:
1289 case EXPR_LITERAL_INTEGER_OCTAL:
1290 case EXPR_LITERAL_INTEGER_HEXADECIMAL:
1291 assert(literal->target_value != NULL);
1292 tv = literal->target_value;
1294 case EXPR_LITERAL_FLOATINGPOINT:
1295 tv = new_tarval_from_str(string, size, mode);
1297 case EXPR_LITERAL_FLOATINGPOINT_HEXADECIMAL: {
1298 char *buffer = alloca(size + 2);
1299 memcpy(buffer, "0x", 2);
1300 memcpy(buffer+2, string, size);
1301 tv = new_tarval_from_str(buffer, size+2, mode);
1304 case EXPR_LITERAL_BOOLEAN:
1305 if (string[0] == 't') {
1306 tv = get_mode_one(mode);
1308 assert(string[0] == 'f');
1309 tv = get_mode_null(mode);
1312 case EXPR_LITERAL_MS_NOOP:
1313 tv = get_mode_null(mode);
1318 panic("Invalid literal kind found");
1321 dbg_info *dbgi = get_dbg_info(&literal->base.source_position);
1322 ir_node *res = new_d_Const(dbgi, tv);
1323 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
1324 return create_conv(dbgi, res, mode_arith);
1328 * Allocate an area of size bytes aligned at alignment
1331 static ir_entity *alloc_trampoline(ir_type *frame_type, int size, unsigned alignment)
1333 static unsigned area_cnt = 0;
1336 ir_type *tp = new_type_array(1, ir_type_char);
1337 set_array_bounds_int(tp, 0, 0, size);
1338 set_type_alignment_bytes(tp, alignment);
1340 snprintf(buf, sizeof(buf), "trampolin%u", area_cnt++);
1341 ident *name = new_id_from_str(buf);
1342 ir_entity *area = new_entity(frame_type, name, tp);
1344 /* mark this entity as compiler generated */
1345 set_entity_compiler_generated(area, 1);
1350 * Return a node representing a trampoline region
1351 * for a given function entity.
1353 * @param dbgi debug info
1354 * @param entity the function entity
1356 static ir_node *get_trampoline_region(dbg_info *dbgi, ir_entity *entity)
1358 ir_entity *region = NULL;
1361 if (current_trampolines != NULL) {
1362 for (i = ARR_LEN(current_trampolines) - 1; i >= 0; --i) {
1363 if (current_trampolines[i].function == entity) {
1364 region = current_trampolines[i].region;
1369 current_trampolines = NEW_ARR_F(trampoline_region, 0);
1371 ir_graph *irg = current_ir_graph;
1372 if (region == NULL) {
1373 /* create a new region */
1374 ir_type *frame_tp = get_irg_frame_type(irg);
1375 trampoline_region reg;
1376 reg.function = entity;
1378 reg.region = alloc_trampoline(frame_tp,
1379 be_params->trampoline_size,
1380 be_params->trampoline_align);
1381 ARR_APP1(trampoline_region, current_trampolines, reg);
1382 region = reg.region;
1384 return new_d_simpleSel(dbgi, get_irg_no_mem(irg), get_irg_frame(irg),
1389 * Creates a trampoline for a function represented by an entity.
1391 * @param dbgi debug info
1392 * @param mode the (reference) mode for the function address
1393 * @param entity the function entity
1395 static ir_node *create_trampoline(dbg_info *dbgi, ir_mode *mode,
1398 assert(entity != NULL);
1400 in[0] = get_trampoline_region(dbgi, entity);
1401 in[1] = create_symconst(dbgi, mode, entity);
1402 in[2] = get_irg_frame(current_ir_graph);
1404 ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_inner_trampoline, get_unknown_type());
1405 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1406 return new_Proj(irn, mode, pn_Builtin_1_result);
1410 * Dereference an address.
1412 * @param dbgi debug info
1413 * @param type the type of the dereferenced result (the points_to type)
1414 * @param addr the address to dereference
1416 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1417 ir_node *const addr)
1419 ir_type *irtype = get_ir_type(type);
1420 if (is_compound_type(irtype)
1421 || is_Method_type(irtype)
1422 || is_Array_type(irtype)) {
1426 ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
1427 ? cons_volatile : cons_none;
1428 ir_mode *const mode = get_type_mode(irtype);
1429 ir_node *const memory = get_store();
1430 ir_node *const load = new_d_Load(dbgi, memory, addr, mode, flags);
1431 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1432 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1434 set_store(load_mem);
1436 ir_mode *const mode_arithmetic = get_ir_mode_arithmetic(type);
1437 return create_conv(dbgi, load_res, mode_arithmetic);
1441 * Creates a strict Conv (to the node's mode) if necessary.
1443 * @param dbgi debug info
1444 * @param node the node to strict conv
1446 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1448 ir_mode *mode = get_irn_mode(node);
1450 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1452 if (!mode_is_float(mode))
1455 /* check if there is already a Conv */
1456 if (is_Conv(node)) {
1457 /* convert it into a strict Conv */
1458 set_Conv_strict(node, 1);
1462 /* otherwise create a new one */
1463 return new_d_strictConv(dbgi, node, mode);
1467 * Returns the address of a global variable.
1469 * @param dbgi debug info
1470 * @param variable the variable
1472 static ir_node *get_global_var_address(dbg_info *const dbgi,
1473 const variable_t *const variable)
1475 ir_entity *const irentity = variable->v.entity;
1476 if (variable->thread_local) {
1477 ir_node *const no_mem = new_NoMem();
1478 ir_node *const tls = get_irg_tls(current_ir_graph);
1479 return new_d_simpleSel(dbgi, no_mem, tls, irentity);
1481 return create_symconst(dbgi, mode_P_data, irentity);
1486 * Returns the correct base address depending on whether it is a parameter or a
1487 * normal local variable.
1489 static ir_node *get_local_frame(ir_entity *const ent)
1491 ir_graph *const irg = current_ir_graph;
1492 const ir_type *const owner = get_entity_owner(ent);
1493 if (owner == current_outer_frame || owner == current_outer_value_type) {
1494 assert(current_static_link != NULL);
1495 return current_static_link;
1497 return get_irg_frame(irg);
1502 * Keep all memory edges of the given block.
1504 static void keep_all_memory(ir_node *block)
1506 ir_node *old = get_cur_block();
1508 set_cur_block(block);
1509 keep_alive(get_store());
1510 /* TODO: keep all memory edges from restricted pointers */
1514 static ir_node *reference_expression_enum_value_to_firm(
1515 const reference_expression_t *ref)
1517 entity_t *entity = ref->entity;
1518 type_t *type = skip_typeref(entity->enum_value.enum_type);
1519 /* make sure the type is constructed */
1520 (void) get_ir_type(type);
1522 return new_Const(entity->enum_value.tv);
1525 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1527 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1528 entity_t *entity = ref->entity;
1529 assert(is_declaration(entity));
1530 type_t *type = skip_typeref(entity->declaration.type);
1532 /* make sure the type is constructed */
1533 (void) get_ir_type(type);
1535 if (entity->kind == ENTITY_FUNCTION && entity->function.btk != bk_none) {
1536 ir_entity *irentity = get_function_entity(entity, NULL);
1537 /* for gcc compatibility we have to produce (dummy) addresses for some
1538 * builtins which don't have entities */
1539 if (irentity == NULL) {
1540 if (warning.other) {
1541 warningf(&ref->base.source_position,
1542 "taking address of builtin '%Y'",
1543 ref->entity->base.symbol);
1546 /* simply create a NULL pointer */
1547 ir_mode *mode = get_ir_mode_arithmetic(type_void_ptr);
1548 ir_node *res = new_Const_long(mode, 0);
1554 switch ((declaration_kind_t) entity->declaration.kind) {
1555 case DECLARATION_KIND_UNKNOWN:
1558 case DECLARATION_KIND_LOCAL_VARIABLE: {
1559 ir_mode *const mode = get_ir_mode_storage(type);
1560 ir_node *const value = get_value(entity->variable.v.value_number, mode);
1561 return create_conv(NULL, value, get_ir_mode_arithmetic(type));
1563 case DECLARATION_KIND_PARAMETER: {
1564 ir_mode *const mode = get_ir_mode_storage(type);
1565 ir_node *const value = get_value(entity->parameter.v.value_number,mode);
1566 return create_conv(NULL, value, get_ir_mode_arithmetic(type));
1568 case DECLARATION_KIND_FUNCTION: {
1569 ir_mode *const mode = get_ir_mode_storage(type);
1570 return create_symconst(dbgi, mode, entity->function.irentity);
1572 case DECLARATION_KIND_INNER_FUNCTION: {
1573 ir_mode *const mode = get_ir_mode_storage(type);
1574 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1575 /* inner function not using the closure */
1576 return create_symconst(dbgi, mode, entity->function.irentity);
1578 /* need trampoline here */
1579 return create_trampoline(dbgi, mode, entity->function.irentity);
1582 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1583 const variable_t *variable = &entity->variable;
1584 ir_node *const addr = get_global_var_address(dbgi, variable);
1585 return deref_address(dbgi, variable->base.type, addr);
1588 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1589 ir_entity *irentity = entity->variable.v.entity;
1590 ir_node *frame = get_local_frame(irentity);
1591 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1592 return deref_address(dbgi, entity->declaration.type, sel);
1594 case DECLARATION_KIND_PARAMETER_ENTITY: {
1595 ir_entity *irentity = entity->parameter.v.entity;
1596 ir_node *frame = get_local_frame(irentity);
1597 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1598 return deref_address(dbgi, entity->declaration.type, sel);
1601 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1602 return entity->variable.v.vla_base;
1604 case DECLARATION_KIND_COMPOUND_MEMBER:
1605 panic("not implemented reference type");
1608 panic("reference to declaration with unknown type found");
1611 static ir_node *reference_addr(const reference_expression_t *ref)
1613 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1614 entity_t *entity = ref->entity;
1615 assert(is_declaration(entity));
1617 switch((declaration_kind_t) entity->declaration.kind) {
1618 case DECLARATION_KIND_UNKNOWN:
1620 case DECLARATION_KIND_PARAMETER:
1621 case DECLARATION_KIND_LOCAL_VARIABLE:
1622 /* you can store to a local variable (so we don't panic but return NULL
1623 * as an indicator for no real address) */
1625 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1626 ir_node *const addr = get_global_var_address(dbgi, &entity->variable);
1629 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1630 ir_entity *irentity = entity->variable.v.entity;
1631 ir_node *frame = get_local_frame(irentity);
1632 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1636 case DECLARATION_KIND_PARAMETER_ENTITY: {
1637 ir_entity *irentity = entity->parameter.v.entity;
1638 ir_node *frame = get_local_frame(irentity);
1639 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1644 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1645 return entity->variable.v.vla_base;
1647 case DECLARATION_KIND_FUNCTION: {
1648 type_t *const type = skip_typeref(entity->declaration.type);
1649 ir_mode *const mode = get_ir_mode_storage(type);
1650 return create_symconst(dbgi, mode, entity->function.irentity);
1653 case DECLARATION_KIND_INNER_FUNCTION: {
1654 type_t *const type = skip_typeref(entity->declaration.type);
1655 ir_mode *const mode = get_ir_mode_storage(type);
1656 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1657 /* inner function not using the closure */
1658 return create_symconst(dbgi, mode, entity->function.irentity);
1660 /* need trampoline here */
1661 return create_trampoline(dbgi, mode, entity->function.irentity);
1665 case DECLARATION_KIND_COMPOUND_MEMBER:
1666 panic("not implemented reference type");
1669 panic("reference to declaration with unknown type found");
1673 * Generate an unary builtin.
1675 * @param kind the builtin kind to generate
1676 * @param op the operand
1677 * @param function_type the function type for the GNU builtin routine
1678 * @param db debug info
1680 static ir_node *gen_unary_builtin(ir_builtin_kind kind, expression_t *op, type_t *function_type, dbg_info *db)
1683 in[0] = expression_to_firm(op);
1685 ir_type *tp = get_ir_type(function_type);
1686 ir_type *res = get_method_res_type(tp, 0);
1687 ir_node *irn = new_d_Builtin(db, get_irg_no_mem(current_ir_graph), 1, in, kind, tp);
1688 set_irn_pinned(irn, op_pin_state_floats);
1689 return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result);
1693 * Generate a pinned unary builtin.
1695 * @param kind the builtin kind to generate
1696 * @param op the operand
1697 * @param function_type the function type for the GNU builtin routine
1698 * @param db debug info
1700 static ir_node *gen_unary_builtin_pinned(ir_builtin_kind kind, expression_t *op,
1701 type_t *function_type, dbg_info *db)
1704 in[0] = expression_to_firm(op);
1706 ir_type *tp = get_ir_type(function_type);
1707 ir_type *res = get_method_res_type(tp, 0);
1708 ir_node *mem = get_store();
1709 ir_node *irn = new_d_Builtin(db, mem, 1, in, kind, tp);
1710 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1711 return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result);
1715 * Generate an binary-void-return builtin.
1717 * @param kind the builtin kind to generate
1718 * @param op1 the first operand
1719 * @param op2 the second operand
1720 * @param function_type the function type for the GNU builtin routine
1721 * @param db debug info
1723 static ir_node *gen_binary_builtin_mem(ir_builtin_kind kind, expression_t *op1,
1724 expression_t *op2, type_t *function_type,
1728 in[0] = expression_to_firm(op1);
1729 in[1] = expression_to_firm(op2);
1731 ir_type *tp = get_ir_type(function_type);
1732 ir_node *mem = get_store();
1733 ir_node *irn = new_d_Builtin(db, mem, 2, in, kind, tp);
1734 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1739 * Transform calls to builtin functions.
1741 static ir_node *process_builtin_call(const call_expression_t *call)
1743 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1745 assert(call->function->kind == EXPR_REFERENCE);
1746 reference_expression_t *builtin = &call->function->reference;
1748 type_t *type = skip_typeref(builtin->base.type);
1749 assert(is_type_pointer(type));
1751 type_t *function_type = skip_typeref(type->pointer.points_to);
1753 switch (builtin->entity->function.btk) {
1754 case bk_gnu_builtin_alloca: {
1755 if (call->arguments == NULL || call->arguments->next != NULL) {
1756 panic("invalid number of parameters on __builtin_alloca");
1758 expression_t *argument = call->arguments->expression;
1759 ir_node *size = expression_to_firm(argument);
1761 ir_node *store = get_store();
1762 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1764 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1766 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1771 case bk_gnu_builtin_huge_val:
1772 case bk_gnu_builtin_huge_valf:
1773 case bk_gnu_builtin_huge_vall:
1774 case bk_gnu_builtin_inf:
1775 case bk_gnu_builtin_inff:
1776 case bk_gnu_builtin_infl: {
1777 type_t *type = function_type->function.return_type;
1778 ir_mode *mode = get_ir_mode_arithmetic(type);
1779 tarval *tv = get_mode_infinite(mode);
1780 ir_node *res = new_d_Const(dbgi, tv);
1783 case bk_gnu_builtin_nan:
1784 case bk_gnu_builtin_nanf:
1785 case bk_gnu_builtin_nanl: {
1786 /* Ignore string for now... */
1787 assert(is_type_function(function_type));
1788 type_t *type = function_type->function.return_type;
1789 ir_mode *mode = get_ir_mode_arithmetic(type);
1790 tarval *tv = get_mode_NAN(mode);
1791 ir_node *res = new_d_Const(dbgi, tv);
1794 case bk_gnu_builtin_expect: {
1795 expression_t *argument = call->arguments->expression;
1796 return _expression_to_firm(argument);
1798 case bk_gnu_builtin_va_end:
1799 /* evaluate the argument of va_end for its side effects */
1800 _expression_to_firm(call->arguments->expression);
1802 case bk_gnu_builtin_frame_address: {
1803 expression_t *const expression = call->arguments->expression;
1804 bool val = fold_constant_to_bool(expression);
1807 return get_irg_frame(current_ir_graph);
1809 /* get the argument */
1812 in[0] = expression_to_firm(expression);
1813 in[1] = get_irg_frame(current_ir_graph);
1814 ir_type *tp = get_ir_type(function_type);
1815 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_frame_address, tp);
1816 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1819 case bk_gnu_builtin_return_address: {
1821 expression_t *const expression = call->arguments->expression;
1824 in[0] = expression_to_firm(expression);
1825 in[1] = get_irg_frame(current_ir_graph);
1826 ir_type *tp = get_ir_type(function_type);
1827 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_return_address, tp);
1828 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1830 case bk_gnu_builtin_ffs:
1831 return gen_unary_builtin(ir_bk_ffs, call->arguments->expression, function_type, dbgi);
1832 case bk_gnu_builtin_clz:
1833 return gen_unary_builtin(ir_bk_clz, call->arguments->expression, function_type, dbgi);
1834 case bk_gnu_builtin_ctz:
1835 return gen_unary_builtin(ir_bk_ctz, call->arguments->expression, function_type, dbgi);
1836 case bk_gnu_builtin_popcount:
1837 case bk_ms__popcount:
1838 return gen_unary_builtin(ir_bk_popcount, call->arguments->expression, function_type, dbgi);
1839 case bk_gnu_builtin_parity:
1840 return gen_unary_builtin(ir_bk_parity, call->arguments->expression, function_type, dbgi);
1841 case bk_gnu_builtin_prefetch: {
1842 call_argument_t *const args = call->arguments;
1843 expression_t *const addr = args->expression;
1846 in[0] = _expression_to_firm(addr);
1847 if (args->next != NULL) {
1848 expression_t *const rw = args->next->expression;
1850 in[1] = _expression_to_firm(rw);
1852 if (args->next->next != NULL) {
1853 expression_t *const locality = args->next->next->expression;
1855 in[2] = expression_to_firm(locality);
1857 in[2] = new_Const_long(mode_int, 3);
1860 in[1] = new_Const_long(mode_int, 0);
1861 in[2] = new_Const_long(mode_int, 3);
1863 ir_type *tp = get_ir_type(function_type);
1864 ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_prefetch, tp);
1865 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1868 case bk_gnu_builtin_trap:
1871 ir_type *tp = get_ir_type(function_type);
1872 ir_node *irn = new_d_Builtin(dbgi, get_store(), 0, NULL, ir_bk_trap, tp);
1873 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1876 case bk_ms__debugbreak: {
1877 ir_type *tp = get_ir_type(function_type);
1878 ir_node *irn = new_d_Builtin(dbgi, get_store(), 0, NULL, ir_bk_debugbreak, tp);
1879 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1882 case bk_ms_ReturnAddress: {
1885 in[0] = new_Const_long(mode_int, 0);
1886 in[1] = get_irg_frame(current_ir_graph);
1887 ir_type *tp = get_ir_type(function_type);
1888 ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_return_address, tp);
1889 return new_Proj(irn, mode_P_data, pn_Builtin_1_result);
1892 case bk_ms_rotl64: {
1893 ir_node *val = expression_to_firm(call->arguments->expression);
1894 ir_node *shf = expression_to_firm(call->arguments->next->expression);
1895 ir_mode *mode = get_irn_mode(val);
1896 return new_d_Rotl(dbgi, val, create_conv(dbgi, shf, mode_uint), mode);
1899 case bk_ms_rotr64: {
1900 ir_node *val = expression_to_firm(call->arguments->expression);
1901 ir_node *shf = expression_to_firm(call->arguments->next->expression);
1902 ir_mode *mode = get_irn_mode(val);
1903 ir_node *c = new_Const_long(mode_uint, get_mode_size_bits(mode));
1904 ir_node *sub = new_d_Sub(dbgi, c, create_conv(dbgi, shf, mode_uint), mode_uint);
1905 return new_d_Rotl(dbgi, val, sub, mode);
1907 case bk_ms_byteswap_ushort:
1908 case bk_ms_byteswap_ulong:
1909 case bk_ms_byteswap_uint64:
1910 return gen_unary_builtin(ir_bk_bswap, call->arguments->expression, function_type, dbgi);
1913 case bk_ms__indword:
1914 return gen_unary_builtin_pinned(ir_bk_inport, call->arguments->expression, function_type, dbgi);
1915 case bk_ms__outbyte:
1916 case bk_ms__outword:
1917 case bk_ms__outdword:
1918 return gen_binary_builtin_mem(ir_bk_outport, call->arguments->expression,
1919 call->arguments->next->expression, function_type, dbgi);
1921 panic("unsupported builtin found");
1926 * Transform a call expression.
1927 * Handles some special cases, like alloca() calls, which must be resolved
1928 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1929 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1932 static ir_node *call_expression_to_firm(const call_expression_t *const call)
1934 dbg_info *const dbgi = get_dbg_info(&call->base.source_position);
1935 assert(get_cur_block() != NULL);
1937 expression_t *function = call->function;
1938 if (function->kind == EXPR_REFERENCE) {
1939 const reference_expression_t *ref = &function->reference;
1940 entity_t *entity = ref->entity;
1942 if (entity->kind == ENTITY_FUNCTION) {
1943 ir_entity *irentity = entity->function.irentity;
1944 if (irentity == NULL)
1945 irentity = get_function_entity(entity, NULL);
1947 if (irentity == NULL && entity->function.btk != bk_none) {
1948 return process_builtin_call(call);
1951 if (irentity == rts_entities[rts_alloca]) {
1952 /* handle alloca() call */
1953 expression_t *argument = call->arguments->expression;
1954 ir_node *size = expression_to_firm(argument);
1955 ir_mode *mode = get_ir_mode_arithmetic(type_size_t);
1957 size = create_conv(dbgi, size, mode);
1959 ir_node *store = get_store();
1960 ir_node *alloca = new_d_Alloc(dbgi, store, size,
1961 firm_unknown_type, stack_alloc);
1962 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1964 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1970 ir_node *callee = expression_to_firm(function);
1972 type_t *type = skip_typeref(function->base.type);
1973 assert(is_type_pointer(type));
1974 pointer_type_t *pointer_type = &type->pointer;
1975 type_t *points_to = skip_typeref(pointer_type->points_to);
1976 assert(is_type_function(points_to));
1977 function_type_t *function_type = &points_to->function;
1979 int n_parameters = 0;
1980 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1981 ir_type *new_method_type = NULL;
1982 if (function_type->variadic || function_type->unspecified_parameters) {
1983 const call_argument_t *argument = call->arguments;
1984 for ( ; argument != NULL; argument = argument->next) {
1988 /* we need to construct a new method type matching the call
1990 type_dbg_info *tdbgi = get_type_dbg_info_((const type_t*) function_type);
1991 int n_res = get_method_n_ress(ir_method_type);
1992 new_method_type = new_d_type_method(n_parameters, n_res, tdbgi);
1993 set_method_calling_convention(new_method_type,
1994 get_method_calling_convention(ir_method_type));
1995 set_method_additional_properties(new_method_type,
1996 get_method_additional_properties(ir_method_type));
1997 set_method_variadicity(new_method_type,
1998 get_method_variadicity(ir_method_type));
2000 for (int i = 0; i < n_res; ++i) {
2001 set_method_res_type(new_method_type, i,
2002 get_method_res_type(ir_method_type, i));
2004 argument = call->arguments;
2005 for (int i = 0; i < n_parameters; ++i, argument = argument->next) {
2006 expression_t *expression = argument->expression;
2007 ir_type *irtype = get_ir_type(expression->base.type);
2008 set_method_param_type(new_method_type, i, irtype);
2010 ir_method_type = new_method_type;
2012 n_parameters = get_method_n_params(ir_method_type);
2015 ir_node *in[n_parameters];
2017 const call_argument_t *argument = call->arguments;
2018 for (int n = 0; n < n_parameters; ++n) {
2019 expression_t *expression = argument->expression;
2020 ir_node *arg_node = expression_to_firm(expression);
2022 type_t *type = skip_typeref(expression->base.type);
2023 if (!is_type_compound(type)) {
2024 ir_mode *mode = get_ir_mode_storage(expression->base.type);
2025 arg_node = create_conv(dbgi, arg_node, mode);
2026 arg_node = do_strict_conv(dbgi, arg_node);
2031 argument = argument->next;
2034 ir_node *store = get_store();
2035 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
2037 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M);
2040 type_t *return_type = skip_typeref(function_type->return_type);
2041 ir_node *result = NULL;
2043 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
2044 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
2046 if (is_type_scalar(return_type)) {
2047 ir_mode *mode = get_ir_mode_storage(return_type);
2048 result = new_d_Proj(dbgi, resproj, mode, 0);
2049 ir_mode *mode_arith = get_ir_mode_arithmetic(return_type);
2050 result = create_conv(NULL, result, mode_arith);
2052 ir_mode *mode = mode_P_data;
2053 result = new_d_Proj(dbgi, resproj, mode, 0);
2057 if (function->kind == EXPR_REFERENCE &&
2058 function->reference.entity->declaration.modifiers & DM_NORETURN) {
2059 /* A dead end: Keep the Call and the Block. Also place all further
2060 * nodes into a new and unreachable block. */
2062 keep_alive(get_cur_block());
2069 static void statement_to_firm(statement_t *statement);
2070 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
2072 static ir_node *expression_to_addr(const expression_t *expression);
2073 static ir_node *create_condition_evaluation(const expression_t *expression,
2074 ir_node *true_block,
2075 ir_node *false_block);
2077 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
2080 if (!is_type_compound(type)) {
2081 ir_mode *mode = get_ir_mode_storage(type);
2082 value = create_conv(dbgi, value, mode);
2083 value = do_strict_conv(dbgi, value);
2086 ir_node *memory = get_store();
2088 if (is_type_scalar(type)) {
2089 ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
2090 ? cons_volatile : cons_none;
2091 ir_node *store = new_d_Store(dbgi, memory, addr, value, flags);
2092 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
2093 set_store(store_mem);
2095 ir_type *irtype = get_ir_type(type);
2096 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
2097 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
2098 set_store(copyb_mem);
2102 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
2104 tarval *all_one = get_mode_all_one(mode);
2105 int mode_size = get_mode_size_bits(mode);
2107 assert(offset >= 0);
2109 assert(offset + size <= mode_size);
2110 if (size == mode_size) {
2114 long shiftr = get_mode_size_bits(mode) - size;
2115 long shiftl = offset;
2116 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
2117 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
2118 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
2119 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
2124 static ir_node *bitfield_store_to_firm(dbg_info *dbgi,
2125 ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile)
2127 ir_type *entity_type = get_entity_type(entity);
2128 ir_type *base_type = get_primitive_base_type(entity_type);
2129 assert(base_type != NULL);
2130 ir_mode *mode = get_type_mode(base_type);
2132 value = create_conv(dbgi, value, mode);
2134 /* kill upper bits of value and shift to right position */
2135 int bitoffset = get_entity_offset_bits_remainder(entity);
2136 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
2138 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
2139 ir_node *mask_node = new_d_Const(dbgi, mask);
2140 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
2141 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
2142 ir_node *shiftcount = new_d_Const(dbgi, shiftl);
2143 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
2145 /* load current value */
2146 ir_node *mem = get_store();
2147 ir_node *load = new_d_Load(dbgi, mem, addr, mode,
2148 set_volatile ? cons_volatile : cons_none);
2149 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
2150 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
2151 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
2152 tarval *inv_mask = tarval_not(shift_mask);
2153 ir_node *inv_mask_node = new_d_Const(dbgi, inv_mask);
2154 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
2156 /* construct new value and store */
2157 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
2158 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val,
2159 set_volatile ? cons_volatile : cons_none);
2160 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
2161 set_store(store_mem);
2163 return value_masked;
2166 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
2169 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2170 type_t *type = expression->base.type;
2171 ir_mode *mode = get_ir_mode_storage(type);
2172 ir_node *mem = get_store();
2173 ir_node *load = new_d_Load(dbgi, mem, addr, mode, cons_none);
2174 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
2175 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
2177 load_res = create_conv(dbgi, load_res, mode_int);
2179 set_store(load_mem);
2181 /* kill upper bits */
2182 assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER);
2183 ir_entity *entity = expression->compound_entry->compound_member.entity;
2184 int bitoffset = get_entity_offset_bits_remainder(entity);
2185 ir_type *entity_type = get_entity_type(entity);
2186 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
2187 long shift_bitsl = machine_size - bitoffset - bitsize;
2188 assert(shift_bitsl >= 0);
2189 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
2190 ir_node *countl = new_d_Const(dbgi, tvl);
2191 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
2193 long shift_bitsr = bitoffset + shift_bitsl;
2194 assert(shift_bitsr <= (long) machine_size);
2195 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
2196 ir_node *countr = new_d_Const(dbgi, tvr);
2198 if (mode_is_signed(mode)) {
2199 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
2201 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
2204 return create_conv(dbgi, shiftr, mode);
2207 /* make sure the selected compound type is constructed */
2208 static void construct_select_compound(const select_expression_t *expression)
2210 type_t *type = skip_typeref(expression->compound->base.type);
2211 if (is_type_pointer(type)) {
2212 type = type->pointer.points_to;
2214 (void) get_ir_type(type);
2217 static ir_node *set_value_for_expression_addr(const expression_t *expression,
2218 ir_node *value, ir_node *addr)
2220 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2221 type_t *type = skip_typeref(expression->base.type);
2223 if (!is_type_compound(type)) {
2224 ir_mode *mode = get_ir_mode_storage(type);
2225 value = create_conv(dbgi, value, mode);
2226 value = do_strict_conv(dbgi, value);
2229 if (expression->kind == EXPR_REFERENCE) {
2230 const reference_expression_t *ref = &expression->reference;
2232 entity_t *entity = ref->entity;
2233 assert(is_declaration(entity));
2234 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2235 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2236 set_value(entity->variable.v.value_number, value);
2238 } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2239 set_value(entity->parameter.v.value_number, value);
2245 addr = expression_to_addr(expression);
2246 assert(addr != NULL);
2248 if (expression->kind == EXPR_SELECT) {
2249 const select_expression_t *select = &expression->select;
2251 construct_select_compound(select);
2253 entity_t *entity = select->compound_entry;
2254 assert(entity->kind == ENTITY_COMPOUND_MEMBER);
2255 if (entity->declaration.type->kind == TYPE_BITFIELD) {
2256 ir_entity *irentity = entity->compound_member.entity;
2258 = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
2259 value = bitfield_store_to_firm(dbgi, irentity, addr, value,
2265 assign_value(dbgi, addr, type, value);
2269 static void set_value_for_expression(const expression_t *expression,
2272 set_value_for_expression_addr(expression, value, NULL);
2275 static ir_node *get_value_from_lvalue(const expression_t *expression,
2278 if (expression->kind == EXPR_REFERENCE) {
2279 const reference_expression_t *ref = &expression->reference;
2281 entity_t *entity = ref->entity;
2282 assert(entity->kind == ENTITY_VARIABLE
2283 || entity->kind == ENTITY_PARAMETER);
2284 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2286 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
2287 value_number = entity->variable.v.value_number;
2288 assert(addr == NULL);
2289 type_t *type = skip_typeref(expression->base.type);
2290 ir_mode *mode = get_ir_mode_storage(type);
2291 ir_node *res = get_value(value_number, mode);
2292 return create_conv(NULL, res, get_ir_mode_arithmetic(type));
2293 } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2294 value_number = entity->parameter.v.value_number;
2295 assert(addr == NULL);
2296 type_t *type = skip_typeref(expression->base.type);
2297 ir_mode *mode = get_ir_mode_storage(type);
2298 ir_node *res = get_value(value_number, mode);
2299 return create_conv(NULL, res, get_ir_mode_arithmetic(type));
2303 assert(addr != NULL);
2304 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2307 if (expression->kind == EXPR_SELECT &&
2308 expression->select.compound_entry->declaration.type->kind == TYPE_BITFIELD){
2309 construct_select_compound(&expression->select);
2310 value = bitfield_extract_to_firm(&expression->select, addr);
2312 value = deref_address(dbgi, expression->base.type, addr);
2319 static ir_node *create_incdec(const unary_expression_t *expression)
2321 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2322 const expression_t *value_expr = expression->value;
2323 ir_node *addr = expression_to_addr(value_expr);
2324 ir_node *value = get_value_from_lvalue(value_expr, addr);
2326 type_t *type = skip_typeref(expression->base.type);
2327 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2330 if (is_type_pointer(type)) {
2331 pointer_type_t *pointer_type = &type->pointer;
2332 offset = get_type_size_node(pointer_type->points_to);
2334 assert(is_type_arithmetic(type));
2335 offset = new_Const(get_mode_one(mode));
2339 ir_node *store_value;
2340 switch(expression->base.kind) {
2341 case EXPR_UNARY_POSTFIX_INCREMENT:
2343 store_value = new_d_Add(dbgi, value, offset, mode);
2345 case EXPR_UNARY_POSTFIX_DECREMENT:
2347 store_value = new_d_Sub(dbgi, value, offset, mode);
2349 case EXPR_UNARY_PREFIX_INCREMENT:
2350 result = new_d_Add(dbgi, value, offset, mode);
2351 store_value = result;
2353 case EXPR_UNARY_PREFIX_DECREMENT:
2354 result = new_d_Sub(dbgi, value, offset, mode);
2355 store_value = result;
2358 panic("no incdec expr in create_incdec");
2361 set_value_for_expression_addr(value_expr, store_value, addr);
2366 static bool is_local_variable(expression_t *expression)
2368 if (expression->kind != EXPR_REFERENCE)
2370 reference_expression_t *ref_expr = &expression->reference;
2371 entity_t *entity = ref_expr->entity;
2372 if (entity->kind != ENTITY_VARIABLE)
2374 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2375 return entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE;
2378 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
2381 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
2382 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
2383 case EXPR_BINARY_NOTEQUAL:
2384 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
2385 case EXPR_BINARY_ISLESS:
2386 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
2387 case EXPR_BINARY_ISLESSEQUAL:
2388 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
2389 case EXPR_BINARY_ISGREATER:
2390 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
2391 case EXPR_BINARY_ISGREATEREQUAL:
2392 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
2393 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
2398 panic("trying to get pn_Cmp from non-comparison binexpr type");
2402 * Handle the assume optimizer hint: check if a Confirm
2403 * node can be created.
2405 * @param dbi debug info
2406 * @param expr the IL assume expression
2408 * we support here only some simple cases:
2413 static ir_node *handle_assume_compare(dbg_info *dbi,
2414 const binary_expression_t *expression)
2416 expression_t *op1 = expression->left;
2417 expression_t *op2 = expression->right;
2418 entity_t *var2, *var = NULL;
2419 ir_node *res = NULL;
2422 cmp_val = get_pnc(expression->base.kind, op1->base.type);
2424 if (is_local_variable(op1) && is_local_variable(op2)) {
2425 var = op1->reference.entity;
2426 var2 = op2->reference.entity;
2428 type_t *const type = skip_typeref(var->declaration.type);
2429 ir_mode *const mode = get_ir_mode_storage(type);
2431 ir_node *const irn1 = get_value(var->variable.v.value_number, mode);
2432 ir_node *const irn2 = get_value(var2->variable.v.value_number, mode);
2434 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
2435 set_value(var2->variable.v.value_number, res);
2437 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
2438 set_value(var->variable.v.value_number, res);
2444 if (is_local_variable(op1) && is_constant_expression(op2)) {
2445 var = op1->reference.entity;
2447 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2448 cmp_val = get_inversed_pnc(cmp_val);
2449 var = op2->reference.entity;
2454 type_t *const type = skip_typeref(var->declaration.type);
2455 ir_mode *const mode = get_ir_mode_storage(type);
2457 res = get_value(var->variable.v.value_number, mode);
2458 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2459 set_value(var->variable.v.value_number, res);
2465 * Handle the assume optimizer hint.
2467 * @param dbi debug info
2468 * @param expr the IL assume expression
2470 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression)
2472 switch(expression->kind) {
2473 case EXPR_BINARY_EQUAL:
2474 case EXPR_BINARY_NOTEQUAL:
2475 case EXPR_BINARY_LESS:
2476 case EXPR_BINARY_LESSEQUAL:
2477 case EXPR_BINARY_GREATER:
2478 case EXPR_BINARY_GREATEREQUAL:
2479 return handle_assume_compare(dbi, &expression->binary);
2485 static ir_node *create_cast(dbg_info *dbgi, ir_node *value_node,
2486 type_t *from_type, type_t *type)
2488 type = skip_typeref(type);
2489 if (!is_type_scalar(type)) {
2490 /* make sure firm type is constructed */
2491 (void) get_ir_type(type);
2495 from_type = skip_typeref(from_type);
2496 ir_mode *mode = get_ir_mode_storage(type);
2497 /* check for conversion from / to __based types */
2498 if (is_type_pointer(type) && is_type_pointer(from_type)) {
2499 const variable_t *from_var = from_type->pointer.base_variable;
2500 const variable_t *to_var = type->pointer.base_variable;
2501 if (from_var != to_var) {
2502 if (from_var != NULL) {
2503 ir_node *const addr = get_global_var_address(dbgi, from_var);
2504 ir_node *const base = deref_address(dbgi, from_var->base.type, addr);
2505 value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(from_type));
2507 if (to_var != NULL) {
2508 ir_node *const addr = get_global_var_address(dbgi, to_var);
2509 ir_node *const base = deref_address(dbgi, to_var->base.type, addr);
2510 value_node = new_d_Sub(dbgi, value_node, base, mode);
2515 if (is_type_atomic(type, ATOMIC_TYPE_BOOL)) {
2516 /* bool adjustments (we save a mode_Bu, but have to temporarily
2517 * convert to mode_b so we only get a 0/1 value */
2518 value_node = create_conv(dbgi, value_node, mode_b);
2521 ir_mode *mode_arith = get_ir_mode_arithmetic(type);
2522 ir_node *node = create_conv(dbgi, value_node, mode);
2523 node = do_strict_conv(dbgi, node);
2524 node = create_conv(dbgi, node, mode_arith);
2529 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2531 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2532 type_t *type = skip_typeref(expression->base.type);
2534 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2535 return expression_to_addr(expression->value);
2537 const expression_t *value = expression->value;
2539 switch(expression->base.kind) {
2540 case EXPR_UNARY_NEGATE: {
2541 ir_node *value_node = expression_to_firm(value);
2542 ir_mode *mode = get_ir_mode_arithmetic(type);
2543 return new_d_Minus(dbgi, value_node, mode);
2545 case EXPR_UNARY_PLUS:
2546 return expression_to_firm(value);
2547 case EXPR_UNARY_BITWISE_NEGATE: {
2548 ir_node *value_node = expression_to_firm(value);
2549 ir_mode *mode = get_ir_mode_arithmetic(type);
2550 return new_d_Not(dbgi, value_node, mode);
2552 case EXPR_UNARY_NOT: {
2553 ir_node *value_node = _expression_to_firm(value);
2554 value_node = create_conv(dbgi, value_node, mode_b);
2555 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2558 case EXPR_UNARY_DEREFERENCE: {
2559 ir_node *value_node = expression_to_firm(value);
2560 type_t *value_type = skip_typeref(value->base.type);
2561 assert(is_type_pointer(value_type));
2563 /* check for __based */
2564 const variable_t *const base_var = value_type->pointer.base_variable;
2565 if (base_var != NULL) {
2566 ir_node *const addr = get_global_var_address(dbgi, base_var);
2567 ir_node *const base = deref_address(dbgi, base_var->base.type, addr);
2568 value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(value_type));
2570 type_t *points_to = value_type->pointer.points_to;
2571 return deref_address(dbgi, points_to, value_node);
2573 case EXPR_UNARY_POSTFIX_INCREMENT:
2574 case EXPR_UNARY_POSTFIX_DECREMENT:
2575 case EXPR_UNARY_PREFIX_INCREMENT:
2576 case EXPR_UNARY_PREFIX_DECREMENT:
2577 return create_incdec(expression);
2578 case EXPR_UNARY_CAST_IMPLICIT:
2579 case EXPR_UNARY_CAST: {
2580 ir_node *value_node = expression_to_firm(value);
2581 type_t *from_type = value->base.type;
2582 return create_cast(dbgi, value_node, from_type, type);
2584 case EXPR_UNARY_ASSUME:
2585 if (firm_opt.confirm)
2586 return handle_assume(dbgi, value);
2593 panic("invalid UNEXPR type found");
2597 * produces a 0/1 depending of the value of a mode_b node
2599 static ir_node *produce_condition_result(const expression_t *expression,
2600 ir_mode *mode, dbg_info *dbgi)
2602 ir_node *cur_block = get_cur_block();
2604 ir_node *one_block = new_immBlock();
2605 set_cur_block(one_block);
2606 ir_node *one = new_Const(get_mode_one(mode));
2607 ir_node *jmp_one = new_d_Jmp(dbgi);
2609 ir_node *zero_block = new_immBlock();
2610 set_cur_block(zero_block);
2611 ir_node *zero = new_Const(get_mode_null(mode));
2612 ir_node *jmp_zero = new_d_Jmp(dbgi);
2614 set_cur_block(cur_block);
2615 create_condition_evaluation(expression, one_block, zero_block);
2616 mature_immBlock(one_block);
2617 mature_immBlock(zero_block);
2619 ir_node *in_cf[2] = { jmp_one, jmp_zero };
2620 new_Block(2, in_cf);
2622 ir_node *in[2] = { one, zero };
2623 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2628 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2629 ir_node *value, type_t *type)
2631 ir_mode *const mode = get_ir_mode_arithmetic(type_ptrdiff_t);
2632 assert(is_type_pointer(type));
2633 pointer_type_t *const pointer_type = &type->pointer;
2634 type_t *const points_to = skip_typeref(pointer_type->points_to);
2635 ir_node * elem_size = get_type_size_node(points_to);
2636 elem_size = create_conv(dbgi, elem_size, mode);
2637 value = create_conv(dbgi, value, mode);
2638 ir_node *const mul = new_d_Mul(dbgi, value, elem_size, mode);
2642 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2643 ir_node *left, ir_node *right)
2646 type_t *type_left = skip_typeref(expression->left->base.type);
2647 type_t *type_right = skip_typeref(expression->right->base.type);
2649 expression_kind_t kind = expression->base.kind;
2652 case EXPR_BINARY_SHIFTLEFT:
2653 case EXPR_BINARY_SHIFTRIGHT:
2654 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2655 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2656 mode = get_irn_mode(left);
2657 right = create_conv(dbgi, right, mode_uint);
2660 case EXPR_BINARY_SUB:
2661 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2662 const pointer_type_t *const ptr_type = &type_left->pointer;
2664 mode = get_ir_mode_arithmetic(expression->base.type);
2665 ir_node *const elem_size = get_type_size_node(ptr_type->points_to);
2666 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2667 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2668 ir_node *const no_mem = new_NoMem();
2669 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2670 mode, op_pin_state_floats);
2671 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2674 case EXPR_BINARY_SUB_ASSIGN:
2675 if (is_type_pointer(type_left)) {
2676 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2677 mode = get_ir_mode_arithmetic(type_left);
2682 case EXPR_BINARY_ADD:
2683 case EXPR_BINARY_ADD_ASSIGN:
2684 if (is_type_pointer(type_left)) {
2685 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2686 mode = get_ir_mode_arithmetic(type_left);
2688 } else if (is_type_pointer(type_right)) {
2689 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2690 mode = get_ir_mode_arithmetic(type_right);
2697 mode = get_ir_mode_arithmetic(type_right);
2698 left = create_conv(dbgi, left, mode);
2703 case EXPR_BINARY_ADD_ASSIGN:
2704 case EXPR_BINARY_ADD:
2705 return new_d_Add(dbgi, left, right, mode);
2706 case EXPR_BINARY_SUB_ASSIGN:
2707 case EXPR_BINARY_SUB:
2708 return new_d_Sub(dbgi, left, right, mode);
2709 case EXPR_BINARY_MUL_ASSIGN:
2710 case EXPR_BINARY_MUL:
2711 return new_d_Mul(dbgi, left, right, mode);
2712 case EXPR_BINARY_BITWISE_AND:
2713 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2714 return new_d_And(dbgi, left, right, mode);
2715 case EXPR_BINARY_BITWISE_OR:
2716 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2717 return new_d_Or(dbgi, left, right, mode);
2718 case EXPR_BINARY_BITWISE_XOR:
2719 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2720 return new_d_Eor(dbgi, left, right, mode);
2721 case EXPR_BINARY_SHIFTLEFT:
2722 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2723 return new_d_Shl(dbgi, left, right, mode);
2724 case EXPR_BINARY_SHIFTRIGHT:
2725 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2726 if (mode_is_signed(mode)) {
2727 return new_d_Shrs(dbgi, left, right, mode);
2729 return new_d_Shr(dbgi, left, right, mode);
2731 case EXPR_BINARY_DIV:
2732 case EXPR_BINARY_DIV_ASSIGN: {
2733 ir_node *pin = new_Pin(new_NoMem());
2736 if (mode_is_float(mode)) {
2737 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2738 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2740 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2741 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2745 case EXPR_BINARY_MOD:
2746 case EXPR_BINARY_MOD_ASSIGN: {
2747 ir_node *pin = new_Pin(new_NoMem());
2748 assert(!mode_is_float(mode));
2749 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2750 op_pin_state_floats);
2751 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2755 panic("unexpected expression kind");
2759 static ir_node *create_lazy_op(const binary_expression_t *expression)
2761 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2762 type_t *type = skip_typeref(expression->base.type);
2763 ir_mode *mode = get_ir_mode_arithmetic(type);
2765 if (is_constant_expression(expression->left)) {
2766 bool val = fold_constant_to_bool(expression->left);
2767 expression_kind_t ekind = expression->base.kind;
2768 assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
2769 if (ekind == EXPR_BINARY_LOGICAL_AND) {
2771 return new_Const(get_mode_null(mode));
2775 return new_Const(get_mode_one(mode));
2779 if (is_constant_expression(expression->right)) {
2780 bool valr = fold_constant_to_bool(expression->right);
2782 new_Const(get_mode_one(mode)) :
2783 new_Const(get_mode_null(mode));
2786 return produce_condition_result(expression->right, mode, dbgi);
2789 return produce_condition_result((const expression_t*) expression, mode,
2793 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2794 ir_node *right, ir_mode *mode);
2796 static ir_node *create_assign_binop(const binary_expression_t *expression)
2798 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2799 const expression_t *left_expr = expression->left;
2800 type_t *type = skip_typeref(left_expr->base.type);
2801 ir_node *right = expression_to_firm(expression->right);
2802 ir_node *left_addr = expression_to_addr(left_expr);
2803 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2804 ir_node *result = create_op(dbgi, expression, left, right);
2806 result = create_cast(dbgi, result, expression->right->base.type, type);
2807 result = do_strict_conv(dbgi, result);
2809 result = set_value_for_expression_addr(left_expr, result, left_addr);
2811 if (!is_type_compound(type)) {
2812 ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
2813 result = create_conv(dbgi, result, mode_arithmetic);
2818 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2820 expression_kind_t kind = expression->base.kind;
2823 case EXPR_BINARY_EQUAL:
2824 case EXPR_BINARY_NOTEQUAL:
2825 case EXPR_BINARY_LESS:
2826 case EXPR_BINARY_LESSEQUAL:
2827 case EXPR_BINARY_GREATER:
2828 case EXPR_BINARY_GREATEREQUAL:
2829 case EXPR_BINARY_ISGREATER:
2830 case EXPR_BINARY_ISGREATEREQUAL:
2831 case EXPR_BINARY_ISLESS:
2832 case EXPR_BINARY_ISLESSEQUAL:
2833 case EXPR_BINARY_ISLESSGREATER:
2834 case EXPR_BINARY_ISUNORDERED: {
2835 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2836 ir_node *left = expression_to_firm(expression->left);
2837 ir_node *right = expression_to_firm(expression->right);
2838 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2839 long pnc = get_pnc(kind, expression->left->base.type);
2840 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2843 case EXPR_BINARY_ASSIGN: {
2844 ir_node *addr = expression_to_addr(expression->left);
2845 ir_node *right = expression_to_firm(expression->right);
2847 = set_value_for_expression_addr(expression->left, right, addr);
2849 type_t *type = skip_typeref(expression->base.type);
2850 if (!is_type_compound(type)) {
2851 ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
2852 res = create_conv(NULL, res, mode_arithmetic);
2856 case EXPR_BINARY_ADD:
2857 case EXPR_BINARY_SUB:
2858 case EXPR_BINARY_MUL:
2859 case EXPR_BINARY_DIV:
2860 case EXPR_BINARY_MOD:
2861 case EXPR_BINARY_BITWISE_AND:
2862 case EXPR_BINARY_BITWISE_OR:
2863 case EXPR_BINARY_BITWISE_XOR:
2864 case EXPR_BINARY_SHIFTLEFT:
2865 case EXPR_BINARY_SHIFTRIGHT:
2867 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2868 ir_node *left = expression_to_firm(expression->left);
2869 ir_node *right = expression_to_firm(expression->right);
2870 return create_op(dbgi, expression, left, right);
2872 case EXPR_BINARY_LOGICAL_AND:
2873 case EXPR_BINARY_LOGICAL_OR:
2874 return create_lazy_op(expression);
2875 case EXPR_BINARY_COMMA:
2876 /* create side effects of left side */
2877 (void) expression_to_firm(expression->left);
2878 return _expression_to_firm(expression->right);
2880 case EXPR_BINARY_ADD_ASSIGN:
2881 case EXPR_BINARY_SUB_ASSIGN:
2882 case EXPR_BINARY_MUL_ASSIGN:
2883 case EXPR_BINARY_MOD_ASSIGN:
2884 case EXPR_BINARY_DIV_ASSIGN:
2885 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2886 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2887 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2888 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2889 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2890 return create_assign_binop(expression);
2892 panic("TODO binexpr type");
2896 static ir_node *array_access_addr(const array_access_expression_t *expression)
2898 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2899 ir_node *base_addr = expression_to_firm(expression->array_ref);
2900 ir_node *offset = expression_to_firm(expression->index);
2901 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2902 ir_node *real_offset = adjust_for_pointer_arithmetic(dbgi, offset, ref_type);
2903 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2908 static ir_node *array_access_to_firm(
2909 const array_access_expression_t *expression)
2911 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2912 ir_node *addr = array_access_addr(expression);
2913 type_t *type = revert_automatic_type_conversion(
2914 (const expression_t*) expression);
2915 type = skip_typeref(type);
2917 return deref_address(dbgi, type, addr);
2920 static long get_offsetof_offset(const offsetof_expression_t *expression)
2922 type_t *orig_type = expression->type;
2925 designator_t *designator = expression->designator;
2926 for ( ; designator != NULL; designator = designator->next) {
2927 type_t *type = skip_typeref(orig_type);
2928 /* be sure the type is constructed */
2929 (void) get_ir_type(type);
2931 if (designator->symbol != NULL) {
2932 assert(is_type_compound(type));
2933 symbol_t *symbol = designator->symbol;
2935 compound_t *compound = type->compound.compound;
2936 entity_t *iter = compound->members.entities;
2937 for ( ; iter != NULL; iter = iter->base.next) {
2938 if (iter->base.symbol == symbol) {
2942 assert(iter != NULL);
2944 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
2945 assert(iter->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2946 offset += get_entity_offset(iter->compound_member.entity);
2948 orig_type = iter->declaration.type;
2950 expression_t *array_index = designator->array_index;
2951 assert(designator->array_index != NULL);
2952 assert(is_type_array(type));
2954 long index = fold_constant_to_int(array_index);
2955 ir_type *arr_type = get_ir_type(type);
2956 ir_type *elem_type = get_array_element_type(arr_type);
2957 long elem_size = get_type_size_bytes(elem_type);
2959 offset += index * elem_size;
2961 orig_type = type->array.element_type;
2968 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2970 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
2971 long offset = get_offsetof_offset(expression);
2972 tarval *tv = new_tarval_from_long(offset, mode);
2973 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2975 return new_d_Const(dbgi, tv);
2978 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2979 ir_entity *entity, type_t *type);
2981 static ir_node *compound_literal_to_firm(
2982 const compound_literal_expression_t *expression)
2984 type_t *type = expression->type;
2986 /* create an entity on the stack */
2987 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2989 ident *const id = id_unique("CompLit.%u");
2990 ir_type *const irtype = get_ir_type(type);
2991 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2992 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2993 set_entity_ld_ident(entity, id);
2995 /* create initialisation code */
2996 initializer_t *initializer = expression->initializer;
2997 create_local_initializer(initializer, dbgi, entity, type);
2999 /* create a sel for the compound literal address */
3000 ir_node *frame = get_irg_frame(current_ir_graph);
3001 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3006 * Transform a sizeof expression into Firm code.
3008 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
3010 type_t *const type = skip_typeref(expression->type);
3011 /* ยง6.5.3.4:2 if the type is a VLA, evaluate the expression. */
3012 if (is_type_array(type) && type->array.is_vla
3013 && expression->tp_expression != NULL) {
3014 expression_to_firm(expression->tp_expression);
3017 return get_type_size_node(type);
3020 static entity_t *get_expression_entity(const expression_t *expression)
3022 if (expression->kind != EXPR_REFERENCE)
3025 return expression->reference.entity;
3028 static unsigned get_cparser_entity_alignment(const entity_t *entity)
3030 switch(entity->kind) {
3031 DECLARATION_KIND_CASES
3032 return entity->declaration.alignment;
3035 return entity->compound.alignment;
3036 case ENTITY_TYPEDEF:
3037 return entity->typedefe.alignment;
3045 * Transform an alignof expression into Firm code.
3047 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
3049 unsigned alignment = 0;
3051 const expression_t *tp_expression = expression->tp_expression;
3052 if (tp_expression != NULL) {
3053 entity_t *entity = get_expression_entity(tp_expression);
3054 if (entity != NULL) {
3055 alignment = get_cparser_entity_alignment(entity);
3059 if (alignment == 0) {
3060 type_t *type = expression->type;
3061 alignment = get_type_alignment(type);
3064 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3065 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3066 tarval *tv = new_tarval_from_long(alignment, mode);
3067 return new_d_Const(dbgi, tv);
3070 static void init_ir_types(void);
3072 static tarval *fold_constant_to_tarval(const expression_t *expression)
3074 assert(is_type_valid(skip_typeref(expression->base.type)));
3076 bool constant_folding_old = constant_folding;
3077 constant_folding = true;
3081 assert(is_constant_expression(expression));
3083 ir_graph *old_current_ir_graph = current_ir_graph;
3084 current_ir_graph = get_const_code_irg();
3086 ir_node *cnst = expression_to_firm(expression);
3087 current_ir_graph = old_current_ir_graph;
3089 if (!is_Const(cnst)) {
3090 panic("couldn't fold constant");
3093 constant_folding = constant_folding_old;
3095 tarval *tv = get_Const_tarval(cnst);
3099 long fold_constant_to_int(const expression_t *expression)
3101 if (expression->kind == EXPR_INVALID)
3104 tarval *tv = fold_constant_to_tarval(expression);
3105 if (!tarval_is_long(tv)) {
3106 panic("result of constant folding is not integer");
3109 return get_tarval_long(tv);
3112 bool fold_constant_to_bool(const expression_t *expression)
3114 if (expression->kind == EXPR_INVALID)
3116 tarval *tv = fold_constant_to_tarval(expression);
3117 return !tarval_is_null(tv);
3120 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
3122 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
3124 /* first try to fold a constant condition */
3125 if (is_constant_expression(expression->condition)) {
3126 bool val = fold_constant_to_bool(expression->condition);
3128 expression_t *true_expression = expression->true_expression;
3129 if (true_expression == NULL)
3130 true_expression = expression->condition;
3131 return expression_to_firm(true_expression);
3133 return expression_to_firm(expression->false_expression);
3137 ir_node *cur_block = get_cur_block();
3139 /* create the true block */
3140 ir_node *true_block = new_immBlock();
3141 set_cur_block(true_block);
3143 ir_node *true_val = expression->true_expression != NULL ?
3144 expression_to_firm(expression->true_expression) : NULL;
3145 ir_node *true_jmp = new_Jmp();
3147 /* create the false block */
3148 ir_node *false_block = new_immBlock();
3149 set_cur_block(false_block);
3151 ir_node *false_val = expression_to_firm(expression->false_expression);
3152 ir_node *false_jmp = new_Jmp();
3154 /* create the condition evaluation */
3155 set_cur_block(cur_block);
3156 ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
3157 if (expression->true_expression == NULL) {
3158 if (cond_expr != NULL && get_irn_mode(cond_expr) != mode_b) {
3159 true_val = cond_expr;
3161 /* Condition ended with a short circuit (&&, ||, !) operation or a
3162 * comparison. Generate a "1" as value for the true branch. */
3163 true_val = new_Const(get_mode_one(mode_Is));
3166 mature_immBlock(true_block);
3167 mature_immBlock(false_block);
3169 /* create the common block */
3170 ir_node *in_cf[2] = { true_jmp, false_jmp };
3171 new_Block(2, in_cf);
3173 /* TODO improve static semantics, so either both or no values are NULL */
3174 if (true_val == NULL || false_val == NULL)
3177 ir_node *in[2] = { true_val, false_val };
3178 ir_mode *mode = get_irn_mode(true_val);
3179 assert(get_irn_mode(false_val) == mode);
3180 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
3186 * Returns an IR-node representing the address of a field.
3188 static ir_node *select_addr(const select_expression_t *expression)
3190 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3192 construct_select_compound(expression);
3194 ir_node *compound_addr = expression_to_firm(expression->compound);
3196 entity_t *entry = expression->compound_entry;
3197 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3198 assert(entry->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
3200 if (constant_folding) {
3201 ir_mode *mode = get_irn_mode(compound_addr);
3202 /* FIXME: here, we need an integer mode with the same number of bits as mode */
3203 ir_node *ofs = new_Const_long(mode_uint, entry->compound_member.offset);
3204 return new_d_Add(dbgi, compound_addr, ofs, mode);
3206 ir_entity *irentity = entry->compound_member.entity;
3207 assert(irentity != NULL);
3208 return new_d_simpleSel(dbgi, new_NoMem(), compound_addr, irentity);
3212 static ir_node *select_to_firm(const select_expression_t *expression)
3214 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3215 ir_node *addr = select_addr(expression);
3216 type_t *type = revert_automatic_type_conversion(
3217 (const expression_t*) expression);
3218 type = skip_typeref(type);
3220 entity_t *entry = expression->compound_entry;
3221 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3222 type_t *entry_type = skip_typeref(entry->declaration.type);
3224 if (entry_type->kind == TYPE_BITFIELD) {
3225 return bitfield_extract_to_firm(expression, addr);
3228 return deref_address(dbgi, type, addr);
3231 /* Values returned by __builtin_classify_type. */
3232 typedef enum gcc_type_class
3238 enumeral_type_class,
3241 reference_type_class,
3245 function_type_class,
3256 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
3258 type_t *type = expr->type_expression->base.type;
3260 /* FIXME gcc returns different values depending on whether compiling C or C++
3261 * e.g. int x[10] is pointer_type_class in C, but array_type_class in C++ */
3264 type = skip_typeref(type);
3265 switch (type->kind) {
3267 const atomic_type_t *const atomic_type = &type->atomic;
3268 switch (atomic_type->akind) {
3269 /* should not be reached */
3270 case ATOMIC_TYPE_INVALID:
3274 /* gcc cannot do that */
3275 case ATOMIC_TYPE_VOID:
3276 tc = void_type_class;
3279 case ATOMIC_TYPE_WCHAR_T: /* gcc handles this as integer */
3280 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
3281 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
3282 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
3283 case ATOMIC_TYPE_SHORT:
3284 case ATOMIC_TYPE_USHORT:
3285 case ATOMIC_TYPE_INT:
3286 case ATOMIC_TYPE_UINT:
3287 case ATOMIC_TYPE_LONG:
3288 case ATOMIC_TYPE_ULONG:
3289 case ATOMIC_TYPE_LONGLONG:
3290 case ATOMIC_TYPE_ULONGLONG:
3291 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
3292 tc = integer_type_class;
3295 case ATOMIC_TYPE_FLOAT:
3296 case ATOMIC_TYPE_DOUBLE:
3297 case ATOMIC_TYPE_LONG_DOUBLE:
3298 tc = real_type_class;
3301 panic("Unexpected atomic type in classify_type_to_firm().");
3304 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
3305 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
3306 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
3307 case TYPE_ARRAY: /* gcc handles this as pointer */
3308 case TYPE_FUNCTION: /* gcc handles this as pointer */
3309 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
3310 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
3311 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
3313 /* gcc handles this as integer */
3314 case TYPE_ENUM: tc = integer_type_class; goto make_const;
3316 /* gcc classifies the referenced type */
3317 case TYPE_REFERENCE: type = type->reference.refers_to; continue;
3320 /* typedef/typeof should be skipped already */
3327 panic("unexpected TYPE classify_type_to_firm().");
3331 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3332 tarval *const tv = new_tarval_from_long(tc, mode_int);
3333 return new_d_Const(dbgi, tv);
3336 static ir_node *function_name_to_firm(
3337 const funcname_expression_t *const expr)
3339 switch(expr->kind) {
3340 case FUNCNAME_FUNCTION:
3341 case FUNCNAME_PRETTY_FUNCTION:
3342 case FUNCNAME_FUNCDNAME:
3343 if (current_function_name == NULL) {
3344 const source_position_t *const src_pos = &expr->base.source_position;
3345 const char *name = current_function_entity->base.symbol->string;
3346 const string_t string = { name, strlen(name) + 1 };
3347 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
3349 return current_function_name;
3350 case FUNCNAME_FUNCSIG:
3351 if (current_funcsig == NULL) {
3352 const source_position_t *const src_pos = &expr->base.source_position;
3353 ir_entity *ent = get_irg_entity(current_ir_graph);
3354 const char *const name = get_entity_ld_name(ent);
3355 const string_t string = { name, strlen(name) + 1 };
3356 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
3358 return current_funcsig;
3360 panic("Unsupported function name");
3363 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
3365 statement_t *statement = expr->statement;
3367 assert(statement->kind == STATEMENT_COMPOUND);
3368 return compound_statement_to_firm(&statement->compound);
3371 static ir_node *va_start_expression_to_firm(
3372 const va_start_expression_t *const expr)
3374 type_t *const type = current_function_entity->declaration.type;
3375 ir_type *const method_type = get_ir_type(type);
3376 int const n = get_method_n_params(method_type) - 1;
3377 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
3378 ir_node *const frame = get_irg_frame(current_ir_graph);
3379 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3380 ir_node *const no_mem = new_NoMem();
3381 ir_node *const arg_sel =
3382 new_d_simpleSel(dbgi, no_mem, frame, parm_ent);
3384 type_t *const param_type = expr->parameter->base.type;
3385 ir_node *const cnst = get_type_size_node(param_type);
3386 ir_mode *const mode = get_irn_mode(cnst);
3387 ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
3388 ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
3389 ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align);
3390 ir_node *const c4 = new_d_And(dbgi, c2, c3, mode);
3391 ir_node *const add = new_d_Add(dbgi, arg_sel, c4, mode_P_data);
3392 set_value_for_expression(expr->ap, add);
3397 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
3399 type_t *const type = expr->base.type;
3400 expression_t *const ap_expr = expr->ap;
3401 ir_node *const ap_addr = expression_to_addr(ap_expr);
3402 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
3403 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
3404 ir_node *const res = deref_address(dbgi, type, ap);
3406 ir_node *const cnst = get_type_size_node(expr->base.type);
3407 ir_mode *const mode = get_irn_mode(cnst);
3408 ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
3409 ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
3410 ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align);
3411 ir_node *const c4 = new_d_And(dbgi, c2, c3, mode);
3412 ir_node *const add = new_d_Add(dbgi, ap, c4, mode_P_data);
3414 set_value_for_expression_addr(ap_expr, add, ap_addr);
3420 * Generate Firm for a va_copy expression.
3422 static ir_node *va_copy_expression_to_firm(const va_copy_expression_t *const expr)
3424 ir_node *const src = expression_to_firm(expr->src);
3425 set_value_for_expression(expr->dst, src);
3429 static ir_node *dereference_addr(const unary_expression_t *const expression)
3431 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
3432 return expression_to_firm(expression->value);
3436 * Returns a IR-node representing an lvalue of the given expression.
3438 static ir_node *expression_to_addr(const expression_t *expression)
3440 switch(expression->kind) {
3441 case EXPR_ARRAY_ACCESS:
3442 return array_access_addr(&expression->array_access);
3444 return call_expression_to_firm(&expression->call);
3445 case EXPR_COMPOUND_LITERAL:
3446 return compound_literal_to_firm(&expression->compound_literal);
3447 case EXPR_REFERENCE:
3448 return reference_addr(&expression->reference);
3450 return select_addr(&expression->select);
3451 case EXPR_UNARY_DEREFERENCE:
3452 return dereference_addr(&expression->unary);
3456 panic("trying to get address of non-lvalue");
3459 static ir_node *builtin_constant_to_firm(
3460 const builtin_constant_expression_t *expression)
3462 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3465 if (is_constant_expression(expression->value)) {
3470 return new_Const_long(mode, v);
3473 static ir_node *builtin_types_compatible_to_firm(
3474 const builtin_types_compatible_expression_t *expression)
3476 type_t *const left = get_unqualified_type(skip_typeref(expression->left));
3477 type_t *const right = get_unqualified_type(skip_typeref(expression->right));
3478 long const value = types_compatible(left, right) ? 1 : 0;
3479 ir_mode *const mode = get_ir_mode_arithmetic(expression->base.type);
3480 return new_Const_long(mode, value);
3483 static ir_node *get_label_block(label_t *label)
3485 if (label->block != NULL)
3486 return label->block;
3488 /* beware: might be called from create initializer with current_ir_graph
3489 * set to const_code_irg. */
3490 ir_graph *rem = current_ir_graph;
3491 current_ir_graph = current_function;
3493 ir_node *block = new_immBlock();
3495 label->block = block;
3497 ARR_APP1(label_t *, all_labels, label);
3499 current_ir_graph = rem;
3504 * Pointer to a label. This is used for the
3505 * GNU address-of-label extension.
3507 static ir_node *label_address_to_firm(const label_address_expression_t *label)
3509 dbg_info *dbgi = get_dbg_info(&label->base.source_position);
3510 ir_node *block = get_label_block(label->label);
3511 ir_entity *entity = create_Block_entity(block);
3513 symconst_symbol value;
3514 value.entity_p = entity;
3515 return new_d_SymConst(dbgi, mode_P_code, value, symconst_addr_ent);
3519 * creates firm nodes for an expression. The difference between this function
3520 * and expression_to_firm is, that this version might produce mode_b nodes
3521 * instead of mode_Is.
3523 static ir_node *_expression_to_firm(const expression_t *expression)
3526 if (!constant_folding) {
3527 assert(!expression->base.transformed);
3528 ((expression_t*) expression)->base.transformed = true;
3532 switch (expression->kind) {
3534 return literal_to_firm(&expression->literal);
3535 case EXPR_STRING_LITERAL:
3536 return string_to_firm(&expression->base.source_position, "str.%u",
3537 &expression->literal.value);
3538 case EXPR_WIDE_STRING_LITERAL:
3539 return wide_string_literal_to_firm(&expression->string_literal);
3540 case EXPR_REFERENCE:
3541 return reference_expression_to_firm(&expression->reference);
3542 case EXPR_REFERENCE_ENUM_VALUE:
3543 return reference_expression_enum_value_to_firm(&expression->reference);
3545 return call_expression_to_firm(&expression->call);
3547 return unary_expression_to_firm(&expression->unary);
3549 return binary_expression_to_firm(&expression->binary);
3550 case EXPR_ARRAY_ACCESS:
3551 return array_access_to_firm(&expression->array_access);
3553 return sizeof_to_firm(&expression->typeprop);
3555 return alignof_to_firm(&expression->typeprop);
3556 case EXPR_CONDITIONAL:
3557 return conditional_to_firm(&expression->conditional);
3559 return select_to_firm(&expression->select);
3560 case EXPR_CLASSIFY_TYPE:
3561 return classify_type_to_firm(&expression->classify_type);
3563 return function_name_to_firm(&expression->funcname);
3564 case EXPR_STATEMENT:
3565 return statement_expression_to_firm(&expression->statement);
3567 return va_start_expression_to_firm(&expression->va_starte);
3569 return va_arg_expression_to_firm(&expression->va_arge);
3571 return va_copy_expression_to_firm(&expression->va_copye);
3572 case EXPR_BUILTIN_CONSTANT_P:
3573 return builtin_constant_to_firm(&expression->builtin_constant);
3574 case EXPR_BUILTIN_TYPES_COMPATIBLE_P:
3575 return builtin_types_compatible_to_firm(&expression->builtin_types_compatible);
3577 return offsetof_to_firm(&expression->offsetofe);
3578 case EXPR_COMPOUND_LITERAL:
3579 return compound_literal_to_firm(&expression->compound_literal);
3580 case EXPR_LABEL_ADDRESS:
3581 return label_address_to_firm(&expression->label_address);
3587 panic("invalid expression found");
3591 * Check if a given expression is a GNU __builtin_expect() call.
3593 static bool is_builtin_expect(const expression_t *expression)
3595 if (expression->kind != EXPR_CALL)
3598 expression_t *function = expression->call.function;
3599 if (function->kind != EXPR_REFERENCE)
3601 reference_expression_t *ref = &function->reference;
3602 if (ref->entity->kind != ENTITY_FUNCTION ||
3603 ref->entity->function.btk != bk_gnu_builtin_expect)
3609 static bool produces_mode_b(const expression_t *expression)
3611 switch (expression->kind) {
3612 case EXPR_BINARY_EQUAL:
3613 case EXPR_BINARY_NOTEQUAL:
3614 case EXPR_BINARY_LESS:
3615 case EXPR_BINARY_LESSEQUAL:
3616 case EXPR_BINARY_GREATER:
3617 case EXPR_BINARY_GREATEREQUAL:
3618 case EXPR_BINARY_ISGREATER:
3619 case EXPR_BINARY_ISGREATEREQUAL:
3620 case EXPR_BINARY_ISLESS:
3621 case EXPR_BINARY_ISLESSEQUAL:
3622 case EXPR_BINARY_ISLESSGREATER:
3623 case EXPR_BINARY_ISUNORDERED:
3624 case EXPR_UNARY_NOT:
3628 if (is_builtin_expect(expression)) {
3629 expression_t *argument = expression->call.arguments->expression;
3630 return produces_mode_b(argument);
3633 case EXPR_BINARY_COMMA:
3634 return produces_mode_b(expression->binary.right);
3641 static ir_node *expression_to_firm(const expression_t *expression)
3643 if (!produces_mode_b(expression)) {
3644 ir_node *res = _expression_to_firm(expression);
3645 assert(res == NULL || get_irn_mode(res) != mode_b);
3649 if (is_constant_expression(expression)) {
3650 ir_node *res = _expression_to_firm(expression);
3651 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3652 assert(is_Const(res));
3653 if (is_Const_null(res)) {
3654 return new_Const_long(mode, 0);
3656 return new_Const_long(mode, 1);
3660 /* we have to produce a 0/1 from the mode_b expression */
3661 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3662 ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
3663 return produce_condition_result(expression, mode, dbgi);
3667 * create a short-circuit expression evaluation that tries to construct
3668 * efficient control flow structures for &&, || and ! expressions
3670 static ir_node *create_condition_evaluation(const expression_t *expression,
3671 ir_node *true_block,
3672 ir_node *false_block)
3674 switch(expression->kind) {
3675 case EXPR_UNARY_NOT: {
3676 const unary_expression_t *unary_expression = &expression->unary;
3677 create_condition_evaluation(unary_expression->value, false_block,
3681 case EXPR_BINARY_LOGICAL_AND: {
3682 const binary_expression_t *binary_expression = &expression->binary;
3684 ir_node *extra_block = new_immBlock();
3685 create_condition_evaluation(binary_expression->left, extra_block,
3687 mature_immBlock(extra_block);
3688 set_cur_block(extra_block);
3689 create_condition_evaluation(binary_expression->right, true_block,
3693 case EXPR_BINARY_LOGICAL_OR: {
3694 const binary_expression_t *binary_expression = &expression->binary;
3696 ir_node *extra_block = new_immBlock();
3697 create_condition_evaluation(binary_expression->left, true_block,
3699 mature_immBlock(extra_block);
3700 set_cur_block(extra_block);
3701 create_condition_evaluation(binary_expression->right, true_block,
3709 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3710 ir_node *cond_expr = _expression_to_firm(expression);
3711 ir_node *condition = create_conv(dbgi, cond_expr, mode_b);
3712 ir_node *cond = new_d_Cond(dbgi, condition);
3713 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3714 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3716 /* set branch prediction info based on __builtin_expect */
3717 if (is_builtin_expect(expression) && is_Cond(cond)) {
3718 call_argument_t *argument = expression->call.arguments->next;
3719 if (is_constant_expression(argument->expression)) {
3720 bool cnst = fold_constant_to_bool(argument->expression);
3721 cond_jmp_predicate pred;
3723 if (cnst == false) {
3724 pred = COND_JMP_PRED_FALSE;
3726 pred = COND_JMP_PRED_TRUE;
3728 set_Cond_jmp_pred(cond, pred);
3732 add_immBlock_pred(true_block, true_proj);
3733 add_immBlock_pred(false_block, false_proj);
3735 set_cur_block(NULL);
3739 static void create_variable_entity(entity_t *variable,
3740 declaration_kind_t declaration_kind,
3741 ir_type *parent_type)
3743 assert(variable->kind == ENTITY_VARIABLE);
3744 type_t *type = skip_typeref(variable->declaration.type);
3746 ident *const id = new_id_from_str(variable->base.symbol->string);
3747 ir_type *const irtype = get_ir_type(type);
3748 dbg_info *const dbgi = get_dbg_info(&variable->base.source_position);
3749 ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi);
3750 unsigned alignment = variable->declaration.alignment;
3752 set_entity_alignment(irentity, alignment);
3754 handle_decl_modifiers(irentity, variable);
3756 variable->declaration.kind = (unsigned char) declaration_kind;
3757 variable->variable.v.entity = irentity;
3758 set_entity_ld_ident(irentity, create_ld_ident(variable));
3760 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3761 set_entity_volatility(irentity, volatility_is_volatile);
3766 typedef struct type_path_entry_t type_path_entry_t;
3767 struct type_path_entry_t {
3769 ir_initializer_t *initializer;
3771 entity_t *compound_entry;
3774 typedef struct type_path_t type_path_t;
3775 struct type_path_t {
3776 type_path_entry_t *path;
3781 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3783 size_t len = ARR_LEN(path->path);
3785 for (size_t i = 0; i < len; ++i) {
3786 const type_path_entry_t *entry = & path->path[i];
3788 type_t *type = skip_typeref(entry->type);
3789 if (is_type_compound(type)) {
3790 fprintf(stderr, ".%s", entry->compound_entry->base.symbol->string);
3791 } else if (is_type_array(type)) {
3792 fprintf(stderr, "[%u]", (unsigned) entry->index);
3794 fprintf(stderr, "-INVALID-");
3797 fprintf(stderr, " (");
3798 print_type(path->top_type);
3799 fprintf(stderr, ")");
3802 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3804 size_t len = ARR_LEN(path->path);
3806 return & path->path[len-1];
3809 static type_path_entry_t *append_to_type_path(type_path_t *path)
3811 size_t len = ARR_LEN(path->path);
3812 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3814 type_path_entry_t *result = & path->path[len];
3815 memset(result, 0, sizeof(result[0]));
3819 static size_t get_compound_member_count(const compound_type_t *type)
3821 compound_t *compound = type->compound;
3822 size_t n_members = 0;
3823 entity_t *member = compound->members.entities;
3824 for ( ; member != NULL; member = member->base.next) {
3831 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3833 type_t *orig_top_type = path->top_type;
3834 type_t *top_type = skip_typeref(orig_top_type);
3836 assert(is_type_compound(top_type) || is_type_array(top_type));
3838 if (ARR_LEN(path->path) == 0) {
3841 type_path_entry_t *top = get_type_path_top(path);
3842 ir_initializer_t *initializer = top->initializer;
3843 return get_initializer_compound_value(initializer, top->index);
3847 static void descend_into_subtype(type_path_t *path)
3849 type_t *orig_top_type = path->top_type;
3850 type_t *top_type = skip_typeref(orig_top_type);
3852 assert(is_type_compound(top_type) || is_type_array(top_type));
3854 ir_initializer_t *initializer = get_initializer_entry(path);
3856 type_path_entry_t *top = append_to_type_path(path);
3857 top->type = top_type;
3861 if (is_type_compound(top_type)) {
3862 compound_t *compound = top_type->compound.compound;
3863 entity_t *entry = compound->members.entities;
3865 top->compound_entry = entry;
3867 len = get_compound_member_count(&top_type->compound);
3868 if (entry != NULL) {
3869 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3870 path->top_type = entry->declaration.type;
3873 assert(is_type_array(top_type));
3874 assert(top_type->array.size > 0);
3877 path->top_type = top_type->array.element_type;
3878 len = top_type->array.size;
3880 if (initializer == NULL
3881 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3882 initializer = create_initializer_compound(len);
3883 /* we have to set the entry at the 2nd latest path entry... */
3884 size_t path_len = ARR_LEN(path->path);
3885 assert(path_len >= 1);
3887 type_path_entry_t *entry = & path->path[path_len-2];
3888 ir_initializer_t *tinitializer = entry->initializer;
3889 set_initializer_compound_value(tinitializer, entry->index,
3893 top->initializer = initializer;
3896 static void ascend_from_subtype(type_path_t *path)
3898 type_path_entry_t *top = get_type_path_top(path);
3900 path->top_type = top->type;
3902 size_t len = ARR_LEN(path->path);
3903 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3906 static void walk_designator(type_path_t *path, const designator_t *designator)
3908 /* designators start at current object type */
3909 ARR_RESIZE(type_path_entry_t, path->path, 1);
3911 for ( ; designator != NULL; designator = designator->next) {
3912 type_path_entry_t *top = get_type_path_top(path);
3913 type_t *orig_type = top->type;
3914 type_t *type = skip_typeref(orig_type);
3916 if (designator->symbol != NULL) {
3917 assert(is_type_compound(type));
3919 symbol_t *symbol = designator->symbol;
3921 compound_t *compound = type->compound.compound;
3922 entity_t *iter = compound->members.entities;
3923 for ( ; iter != NULL; iter = iter->base.next, ++index) {
3924 if (iter->base.symbol == symbol) {
3925 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
3929 assert(iter != NULL);
3931 /* revert previous initialisations of other union elements */
3932 if (type->kind == TYPE_COMPOUND_UNION) {
3933 ir_initializer_t *initializer = top->initializer;
3934 if (initializer != NULL
3935 && get_initializer_kind(initializer) == IR_INITIALIZER_COMPOUND) {
3936 /* are we writing to a new element? */
3937 ir_initializer_t *oldi
3938 = get_initializer_compound_value(initializer, index);
3939 if (get_initializer_kind(oldi) == IR_INITIALIZER_NULL) {
3940 /* clear initializer */
3942 = get_initializer_compound_n_entries(initializer);
3943 ir_initializer_t *nulli = get_initializer_null();
3944 for (size_t i = 0; i < len; ++i) {
3945 set_initializer_compound_value(initializer, i,
3952 top->type = orig_type;
3953 top->compound_entry = iter;
3955 orig_type = iter->declaration.type;
3957 expression_t *array_index = designator->array_index;
3958 assert(designator->array_index != NULL);
3959 assert(is_type_array(type));
3961 long index = fold_constant_to_int(array_index);
3964 if (type->array.size_constant) {
3965 long array_size = type->array.size;
3966 assert(index < array_size);
3970 top->type = orig_type;
3971 top->index = (size_t) index;
3972 orig_type = type->array.element_type;
3974 path->top_type = orig_type;
3976 if (designator->next != NULL) {
3977 descend_into_subtype(path);
3981 path->invalid = false;
3984 static void advance_current_object(type_path_t *path)
3986 if (path->invalid) {
3987 /* TODO: handle this... */
3988 panic("invalid initializer in ast2firm (excessive elements)");
3991 type_path_entry_t *top = get_type_path_top(path);
3993 type_t *type = skip_typeref(top->type);
3994 if (is_type_union(type)) {
3995 /* only the first element is initialized in unions */
3996 top->compound_entry = NULL;
3997 } else if (is_type_struct(type)) {
3998 entity_t *entry = top->compound_entry;
4001 entry = entry->base.next;
4002 top->compound_entry = entry;
4003 if (entry != NULL) {
4004 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
4005 path->top_type = entry->declaration.type;
4009 assert(is_type_array(type));
4012 if (!type->array.size_constant || top->index < type->array.size) {
4017 /* we're past the last member of the current sub-aggregate, try if we
4018 * can ascend in the type hierarchy and continue with another subobject */
4019 size_t len = ARR_LEN(path->path);
4022 ascend_from_subtype(path);
4023 advance_current_object(path);
4025 path->invalid = true;
4030 static ir_initializer_t *create_ir_initializer(
4031 const initializer_t *initializer, type_t *type);
4033 static ir_initializer_t *create_ir_initializer_value(
4034 const initializer_value_t *initializer)
4036 if (is_type_compound(initializer->value->base.type)) {
4037 panic("initializer creation for compounds not implemented yet");
4039 type_t *type = initializer->value->base.type;
4040 expression_t *expr = initializer->value;
4041 if (initializer_use_bitfield_basetype) {
4042 type_t *skipped = skip_typeref(type);
4043 if (skipped->kind == TYPE_BITFIELD) {
4044 /* remove the bitfield cast... */
4045 assert(expr->kind == EXPR_UNARY_CAST_IMPLICIT);
4046 expr = expr->unary.value;
4047 type = skipped->bitfield.base_type;
4050 ir_node *value = expression_to_firm(expr);
4051 ir_mode *mode = get_ir_mode_storage(type);
4052 value = create_conv(NULL, value, mode);
4053 return create_initializer_const(value);
4056 /** test wether type can be initialized by a string constant */
4057 static bool is_string_type(type_t *type)
4060 if (is_type_pointer(type)) {
4061 inner = skip_typeref(type->pointer.points_to);
4062 } else if(is_type_array(type)) {
4063 inner = skip_typeref(type->array.element_type);
4068 return is_type_integer(inner);
4071 static ir_initializer_t *create_ir_initializer_list(
4072 const initializer_list_t *initializer, type_t *type)
4075 memset(&path, 0, sizeof(path));
4076 path.top_type = type;
4077 path.path = NEW_ARR_F(type_path_entry_t, 0);
4079 descend_into_subtype(&path);
4081 for (size_t i = 0; i < initializer->len; ++i) {
4082 const initializer_t *sub_initializer = initializer->initializers[i];
4084 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
4085 walk_designator(&path, sub_initializer->designator.designator);
4089 if (sub_initializer->kind == INITIALIZER_VALUE) {
4090 /* we might have to descend into types until we're at a scalar
4093 type_t *orig_top_type = path.top_type;
4094 type_t *top_type = skip_typeref(orig_top_type);
4096 if (is_type_scalar(top_type))
4098 descend_into_subtype(&path);
4100 } else if (sub_initializer->kind == INITIALIZER_STRING
4101 || sub_initializer->kind == INITIALIZER_WIDE_STRING) {
4102 /* we might have to descend into types until we're at a scalar
4105 type_t *orig_top_type = path.top_type;
4106 type_t *top_type = skip_typeref(orig_top_type);
4108 if (is_string_type(top_type))
4110 descend_into_subtype(&path);
4114 ir_initializer_t *sub_irinitializer
4115 = create_ir_initializer(sub_initializer, path.top_type);
4117 size_t path_len = ARR_LEN(path.path);
4118 assert(path_len >= 1);
4119 type_path_entry_t *entry = & path.path[path_len-1];
4120 ir_initializer_t *tinitializer = entry->initializer;
4121 set_initializer_compound_value(tinitializer, entry->index,
4124 advance_current_object(&path);
4127 assert(ARR_LEN(path.path) >= 1);
4128 ir_initializer_t *result = path.path[0].initializer;
4129 DEL_ARR_F(path.path);
4134 static ir_initializer_t *create_ir_initializer_string(
4135 const initializer_string_t *initializer, type_t *type)
4137 type = skip_typeref(type);
4139 size_t string_len = initializer->string.size;
4140 assert(type->kind == TYPE_ARRAY);
4141 assert(type->array.size_constant);
4142 size_t len = type->array.size;
4143 ir_initializer_t *irinitializer = create_initializer_compound(len);
4145 const char *string = initializer->string.begin;
4146 ir_mode *mode = get_ir_mode_storage(type->array.element_type);
4148 for (size_t i = 0; i < len; ++i) {
4153 tarval *tv = new_tarval_from_long(c, mode);
4154 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
4156 set_initializer_compound_value(irinitializer, i, char_initializer);
4159 return irinitializer;
4162 static ir_initializer_t *create_ir_initializer_wide_string(
4163 const initializer_wide_string_t *initializer, type_t *type)
4165 assert(type->kind == TYPE_ARRAY);
4166 assert(type->array.size_constant);
4167 size_t len = type->array.size;
4168 size_t string_len = wstrlen(&initializer->string);
4169 ir_initializer_t *irinitializer = create_initializer_compound(len);
4171 const char *p = initializer->string.begin;
4172 ir_mode *mode = get_type_mode(ir_type_wchar_t);
4174 for (size_t i = 0; i < len; ++i) {
4176 if (i < string_len) {
4177 c = read_utf8_char(&p);
4179 tarval *tv = new_tarval_from_long(c, mode);
4180 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
4182 set_initializer_compound_value(irinitializer, i, char_initializer);
4185 return irinitializer;
4188 static ir_initializer_t *create_ir_initializer(
4189 const initializer_t *initializer, type_t *type)
4191 switch(initializer->kind) {
4192 case INITIALIZER_STRING:
4193 return create_ir_initializer_string(&initializer->string, type);
4195 case INITIALIZER_WIDE_STRING:
4196 return create_ir_initializer_wide_string(&initializer->wide_string,
4199 case INITIALIZER_LIST:
4200 return create_ir_initializer_list(&initializer->list, type);
4202 case INITIALIZER_VALUE:
4203 return create_ir_initializer_value(&initializer->value);
4205 case INITIALIZER_DESIGNATOR:
4206 panic("unexpected designator initializer found");
4208 panic("unknown initializer");
4211 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
4212 ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr)
4214 switch(get_initializer_kind(initializer)) {
4215 case IR_INITIALIZER_NULL: {
4216 /* NULL is undefined for dynamic initializers */
4219 case IR_INITIALIZER_CONST: {
4220 ir_node *node = get_initializer_const_value(initializer);
4221 ir_type *ent_type = get_entity_type(entity);
4223 /* is it a bitfield type? */
4224 if (is_Primitive_type(ent_type) &&
4225 get_primitive_base_type(ent_type) != NULL) {
4226 bitfield_store_to_firm(dbgi, entity, base_addr, node, false);
4230 assert(get_type_mode(type) == get_irn_mode(node));
4231 ir_node *mem = get_store();
4232 ir_node *store = new_d_Store(dbgi, mem, base_addr, node, cons_none);
4233 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4237 case IR_INITIALIZER_TARVAL: {
4238 tarval *tv = get_initializer_tarval_value(initializer);
4239 ir_node *cnst = new_d_Const(dbgi, tv);
4240 ir_type *ent_type = get_entity_type(entity);
4242 /* is it a bitfield type? */
4243 if (is_Primitive_type(ent_type) &&
4244 get_primitive_base_type(ent_type) != NULL) {
4245 bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false);
4249 assert(get_type_mode(type) == get_tarval_mode(tv));
4250 ir_node *mem = get_store();
4251 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst, cons_none);
4252 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4256 case IR_INITIALIZER_COMPOUND: {
4257 assert(is_compound_type(type));
4259 if (is_Array_type(type)) {
4260 assert(has_array_upper_bound(type, 0));
4261 n_members = get_array_upper_bound_int(type, 0);
4263 n_members = get_compound_n_members(type);
4266 if (get_initializer_compound_n_entries(initializer)
4267 != (unsigned) n_members)
4268 panic("initializer doesn't match compound type");
4270 for (int i = 0; i < n_members; ++i) {
4273 ir_entity *sub_entity;
4274 if (is_Array_type(type)) {
4275 tarval *index_tv = new_tarval_from_long(i, mode_uint);
4276 ir_node *cnst = new_d_Const(dbgi, index_tv);
4277 ir_node *in[1] = { cnst };
4278 irtype = get_array_element_type(type);
4279 sub_entity = get_array_element_entity(type);
4280 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
4283 sub_entity = get_compound_member(type, i);
4284 irtype = get_entity_type(sub_entity);
4285 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
4289 ir_initializer_t *sub_init
4290 = get_initializer_compound_value(initializer, i);
4292 create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
4299 panic("invalid IR_INITIALIZER found");
4302 static void create_dynamic_initializer(ir_initializer_t *initializer,
4303 dbg_info *dbgi, ir_entity *entity)
4305 ir_node *frame = get_irg_frame(current_ir_graph);
4306 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
4307 ir_type *type = get_entity_type(entity);
4309 create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
4312 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
4313 ir_entity *entity, type_t *type)
4315 ir_node *memory = get_store();
4316 ir_node *nomem = new_NoMem();
4317 ir_node *frame = get_irg_frame(current_ir_graph);
4318 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
4320 if (initializer->kind == INITIALIZER_VALUE) {
4321 initializer_value_t *initializer_value = &initializer->value;
4323 ir_node *value = expression_to_firm(initializer_value->value);
4324 type = skip_typeref(type);
4325 assign_value(dbgi, addr, type, value);
4329 if (!is_constant_initializer(initializer)) {
4330 bool old_initializer_use_bitfield_basetype
4331 = initializer_use_bitfield_basetype;
4332 initializer_use_bitfield_basetype = true;
4333 ir_initializer_t *irinitializer
4334 = create_ir_initializer(initializer, type);
4335 initializer_use_bitfield_basetype
4336 = old_initializer_use_bitfield_basetype;
4338 create_dynamic_initializer(irinitializer, dbgi, entity);
4342 /* create the ir_initializer */
4343 ir_graph *const old_current_ir_graph = current_ir_graph;
4344 current_ir_graph = get_const_code_irg();
4346 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
4348 assert(current_ir_graph == get_const_code_irg());
4349 current_ir_graph = old_current_ir_graph;
4351 /* create a "template" entity which is copied to the entity on the stack */
4352 ident *const id = id_unique("initializer.%u");
4353 ir_type *const irtype = get_ir_type(type);
4354 ir_type *const global_type = get_glob_type();
4355 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
4356 set_entity_ld_ident(init_entity, id);
4358 set_entity_visibility(init_entity, ir_visibility_private);
4359 add_entity_linkage(init_entity, IR_LINKAGE_CONSTANT);
4361 set_entity_initializer(init_entity, irinitializer);
4363 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
4364 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
4366 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
4367 set_store(copyb_mem);
4370 static void create_initializer_local_variable_entity(entity_t *entity)
4372 assert(entity->kind == ENTITY_VARIABLE);
4373 initializer_t *initializer = entity->variable.initializer;
4374 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4375 ir_entity *irentity = entity->variable.v.entity;
4376 type_t *type = entity->declaration.type;
4378 create_local_initializer(initializer, dbgi, irentity, type);
4381 static void create_variable_initializer(entity_t *entity)
4383 assert(entity->kind == ENTITY_VARIABLE);
4384 initializer_t *initializer = entity->variable.initializer;
4385 if (initializer == NULL)
4388 declaration_kind_t declaration_kind
4389 = (declaration_kind_t) entity->declaration.kind;
4390 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
4391 create_initializer_local_variable_entity(entity);
4395 type_t *type = entity->declaration.type;
4396 type_qualifiers_t tq = get_type_qualifier(type, true);
4398 if (initializer->kind == INITIALIZER_VALUE) {
4399 initializer_value_t *initializer_value = &initializer->value;
4400 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4402 ir_node *value = expression_to_firm(initializer_value->value);
4404 type_t *type = initializer_value->value->base.type;
4405 ir_mode *mode = get_ir_mode_storage(type);
4406 value = create_conv(dbgi, value, mode);
4407 value = do_strict_conv(dbgi, value);
4409 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
4410 set_value(entity->variable.v.value_number, value);
4412 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4414 ir_entity *irentity = entity->variable.v.entity;
4416 if (tq & TYPE_QUALIFIER_CONST
4417 && get_entity_owner(irentity) != get_tls_type()) {
4418 add_entity_linkage(irentity, IR_LINKAGE_CONSTANT);
4420 set_atomic_ent_value(irentity, value);
4423 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
4424 declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4426 ir_entity *irentity = entity->variable.v.entity;
4427 ir_initializer_t *irinitializer
4428 = create_ir_initializer(initializer, type);
4430 if (tq & TYPE_QUALIFIER_CONST) {
4431 add_entity_linkage(irentity, IR_LINKAGE_CONSTANT);
4433 set_entity_initializer(irentity, irinitializer);
4437 static void create_variable_length_array(entity_t *entity)
4439 assert(entity->kind == ENTITY_VARIABLE);
4440 assert(entity->variable.initializer == NULL);
4442 entity->declaration.kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
4443 entity->variable.v.vla_base = NULL;
4445 /* TODO: record VLA somewhere so we create the free node when we leave
4449 static void allocate_variable_length_array(entity_t *entity)
4451 assert(entity->kind == ENTITY_VARIABLE);
4452 assert(entity->variable.initializer == NULL);
4453 assert(get_cur_block() != NULL);
4455 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
4456 type_t *type = entity->declaration.type;
4457 ir_type *el_type = get_ir_type(type->array.element_type);
4459 /* make sure size_node is calculated */
4460 get_type_size_node(type);
4461 ir_node *elems = type->array.size_node;
4462 ir_node *mem = get_store();
4463 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
4465 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
4466 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
4469 assert(entity->declaration.kind == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
4470 entity->variable.v.vla_base = addr;
4474 * Creates a Firm local variable from a declaration.
4476 static void create_local_variable(entity_t *entity)
4478 assert(entity->kind == ENTITY_VARIABLE);
4479 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4481 bool needs_entity = entity->variable.address_taken;
4482 type_t *type = skip_typeref(entity->declaration.type);
4484 /* is it a variable length array? */
4485 if (is_type_array(type) && !type->array.size_constant) {
4486 create_variable_length_array(entity);
4488 } else if (is_type_array(type) || is_type_compound(type)) {
4489 needs_entity = true;
4490 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4491 needs_entity = true;
4495 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
4496 create_variable_entity(entity,
4497 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
4500 entity->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
4501 entity->variable.v.value_number = next_value_number_function;
4502 set_irg_loc_description(current_ir_graph, next_value_number_function,
4504 ++next_value_number_function;
4508 static void create_local_static_variable(entity_t *entity)
4510 assert(entity->kind == ENTITY_VARIABLE);
4511 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4513 type_t *type = skip_typeref(entity->declaration.type);
4514 ir_type *const var_type = entity->variable.thread_local ?
4515 get_tls_type() : get_glob_type();
4516 ir_type *const irtype = get_ir_type(type);
4517 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
4519 size_t l = strlen(entity->base.symbol->string);
4520 char buf[l + sizeof(".%u")];
4521 snprintf(buf, sizeof(buf), "%s.%%u", entity->base.symbol->string);
4522 ident *const id = id_unique(buf);
4523 ir_entity *const irentity = new_d_entity(var_type, id, irtype, dbgi);
4525 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4526 set_entity_volatility(irentity, volatility_is_volatile);
4529 entity->declaration.kind = DECLARATION_KIND_GLOBAL_VARIABLE;
4530 entity->variable.v.entity = irentity;
4532 set_entity_ld_ident(irentity, id);
4533 set_entity_visibility(irentity, ir_visibility_local);
4535 ir_graph *const old_current_ir_graph = current_ir_graph;
4536 current_ir_graph = get_const_code_irg();
4538 create_variable_initializer(entity);
4540 assert(current_ir_graph == get_const_code_irg());
4541 current_ir_graph = old_current_ir_graph;
4546 static void return_statement_to_firm(return_statement_t *statement)
4548 if (get_cur_block() == NULL)
4551 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4552 type_t *type = current_function_entity->declaration.type;
4553 ir_type *func_irtype = get_ir_type(type);
4558 if (get_method_n_ress(func_irtype) > 0) {
4559 ir_type *res_type = get_method_res_type(func_irtype, 0);
4561 if (statement->value != NULL) {
4562 ir_node *node = expression_to_firm(statement->value);
4563 if (!is_compound_type(res_type)) {
4564 type_t *type = statement->value->base.type;
4565 ir_mode *mode = get_ir_mode_storage(type);
4566 node = create_conv(dbgi, node, mode);
4567 node = do_strict_conv(dbgi, node);
4572 if (is_compound_type(res_type)) {
4575 mode = get_type_mode(res_type);
4577 in[0] = new_Unknown(mode);
4581 /* build return_value for its side effects */
4582 if (statement->value != NULL) {
4583 expression_to_firm(statement->value);
4588 ir_node *store = get_store();
4589 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
4591 ir_node *end_block = get_irg_end_block(current_ir_graph);
4592 add_immBlock_pred(end_block, ret);
4594 set_cur_block(NULL);
4597 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
4599 if (get_cur_block() == NULL)
4602 return expression_to_firm(statement->expression);
4605 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
4607 entity_t *entity = compound->scope.entities;
4608 for ( ; entity != NULL; entity = entity->base.next) {
4609 if (!is_declaration(entity))
4612 create_local_declaration(entity);
4615 ir_node *result = NULL;
4616 statement_t *statement = compound->statements;
4617 for ( ; statement != NULL; statement = statement->base.next) {
4618 if (statement->base.next == NULL
4619 && statement->kind == STATEMENT_EXPRESSION) {
4620 result = expression_statement_to_firm(
4621 &statement->expression);
4624 statement_to_firm(statement);
4630 static void create_global_variable(entity_t *entity)
4632 ir_linkage linkage = 0;
4633 ir_visibility visibility = ir_visibility_default;
4634 ir_entity *irentity;
4635 assert(entity->kind == ENTITY_VARIABLE);
4637 switch ((storage_class_tag_t)entity->declaration.storage_class) {
4638 case STORAGE_CLASS_EXTERN: visibility = ir_visibility_external; break;
4639 case STORAGE_CLASS_STATIC: visibility = ir_visibility_local; break;
4640 case STORAGE_CLASS_NONE:
4641 visibility = ir_visibility_default;
4642 /* uninitialized globals get merged in C */
4643 if (entity->variable.initializer == NULL)
4644 linkage |= IR_LINKAGE_MERGE;
4646 case STORAGE_CLASS_TYPEDEF:
4647 case STORAGE_CLASS_AUTO:
4648 case STORAGE_CLASS_REGISTER:
4649 panic("invalid storage class for global var");
4652 ir_type *var_type = get_glob_type();
4653 if (entity->variable.thread_local) {
4654 var_type = get_tls_type();
4655 /* LINKAGE_MERGE not supported by current linkers */
4656 linkage &= ~IR_LINKAGE_MERGE;
4658 create_variable_entity(entity, DECLARATION_KIND_GLOBAL_VARIABLE, var_type);
4659 irentity = entity->variable.v.entity;
4660 add_entity_linkage(irentity, linkage);
4661 set_entity_visibility(irentity, visibility);
4664 static void create_local_declaration(entity_t *entity)
4666 assert(is_declaration(entity));
4668 /* construct type */
4669 (void) get_ir_type(entity->declaration.type);
4670 if (entity->base.symbol == NULL) {
4674 switch ((storage_class_tag_t) entity->declaration.storage_class) {
4675 case STORAGE_CLASS_STATIC:
4676 if (entity->kind == ENTITY_FUNCTION) {
4677 (void)get_function_entity(entity, NULL);
4679 create_local_static_variable(entity);
4682 case STORAGE_CLASS_EXTERN:
4683 if (entity->kind == ENTITY_FUNCTION) {
4684 assert(entity->function.statement == NULL);
4685 (void)get_function_entity(entity, NULL);
4687 create_global_variable(entity);
4688 create_variable_initializer(entity);
4691 case STORAGE_CLASS_NONE:
4692 case STORAGE_CLASS_AUTO:
4693 case STORAGE_CLASS_REGISTER:
4694 if (entity->kind == ENTITY_FUNCTION) {
4695 if (entity->function.statement != NULL) {
4696 ir_type *owner = get_irg_frame_type(current_ir_graph);
4697 (void)get_function_entity(entity, owner);
4698 entity->declaration.kind = DECLARATION_KIND_INNER_FUNCTION;
4699 enqueue_inner_function(entity);
4701 (void)get_function_entity(entity, NULL);
4704 create_local_variable(entity);
4707 case STORAGE_CLASS_TYPEDEF:
4710 panic("invalid storage class found");
4713 static void initialize_local_declaration(entity_t *entity)
4715 if (entity->base.symbol == NULL)
4718 // no need to emit code in dead blocks
4719 if (entity->declaration.storage_class != STORAGE_CLASS_STATIC
4720 && get_cur_block() == NULL)
4723 switch ((declaration_kind_t) entity->declaration.kind) {
4724 case DECLARATION_KIND_LOCAL_VARIABLE:
4725 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4726 create_variable_initializer(entity);
4729 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4730 allocate_variable_length_array(entity);
4733 case DECLARATION_KIND_COMPOUND_MEMBER:
4734 case DECLARATION_KIND_GLOBAL_VARIABLE:
4735 case DECLARATION_KIND_FUNCTION:
4736 case DECLARATION_KIND_INNER_FUNCTION:
4739 case DECLARATION_KIND_PARAMETER:
4740 case DECLARATION_KIND_PARAMETER_ENTITY:
4741 panic("can't initialize parameters");
4743 case DECLARATION_KIND_UNKNOWN:
4744 panic("can't initialize unknown declaration");
4746 panic("invalid declaration kind");
4749 static void declaration_statement_to_firm(declaration_statement_t *statement)
4751 entity_t *entity = statement->declarations_begin;
4755 entity_t *const last = statement->declarations_end;
4756 for ( ;; entity = entity->base.next) {
4757 if (is_declaration(entity)) {
4758 initialize_local_declaration(entity);
4759 } else if (entity->kind == ENTITY_TYPEDEF) {
4760 /* ยง6.7.7:3 Any array size expressions associated with variable length
4761 * array declarators are evaluated each time the declaration of the
4762 * typedef name is reached in the order of execution. */
4763 type_t *const type = skip_typeref(entity->typedefe.type);
4764 if (is_type_array(type) && type->array.is_vla)
4765 get_vla_size(&type->array);
4772 static void if_statement_to_firm(if_statement_t *statement)
4774 ir_node *cur_block = get_cur_block();
4776 ir_node *fallthrough_block = NULL;
4778 /* the true (blocks) */
4779 ir_node *true_block = NULL;
4780 if (statement->true_statement != NULL) {
4781 true_block = new_immBlock();
4782 set_cur_block(true_block);
4783 statement_to_firm(statement->true_statement);
4784 if (get_cur_block() != NULL) {
4785 ir_node *jmp = new_Jmp();
4786 if (fallthrough_block == NULL)
4787 fallthrough_block = new_immBlock();
4788 add_immBlock_pred(fallthrough_block, jmp);
4792 /* the false (blocks) */
4793 ir_node *false_block = NULL;
4794 if (statement->false_statement != NULL) {
4795 false_block = new_immBlock();
4796 set_cur_block(false_block);
4798 statement_to_firm(statement->false_statement);
4799 if (get_cur_block() != NULL) {
4800 ir_node *jmp = new_Jmp();
4801 if (fallthrough_block == NULL)
4802 fallthrough_block = new_immBlock();
4803 add_immBlock_pred(fallthrough_block, jmp);
4807 /* create the condition */
4808 if (cur_block != NULL) {
4809 if (true_block == NULL || false_block == NULL) {
4810 if (fallthrough_block == NULL)
4811 fallthrough_block = new_immBlock();
4812 if (true_block == NULL)
4813 true_block = fallthrough_block;
4814 if (false_block == NULL)
4815 false_block = fallthrough_block;
4818 set_cur_block(cur_block);
4819 create_condition_evaluation(statement->condition, true_block,
4823 mature_immBlock(true_block);
4824 if (false_block != fallthrough_block && false_block != NULL) {
4825 mature_immBlock(false_block);
4827 if (fallthrough_block != NULL) {
4828 mature_immBlock(fallthrough_block);
4831 set_cur_block(fallthrough_block);
4834 static void while_statement_to_firm(while_statement_t *statement)
4836 ir_node *jmp = NULL;
4837 if (get_cur_block() != NULL) {
4841 /* create the header block */
4842 ir_node *header_block = new_immBlock();
4844 add_immBlock_pred(header_block, jmp);
4848 ir_node *old_continue_label = continue_label;
4849 ir_node *old_break_label = break_label;
4850 continue_label = header_block;
4853 ir_node *body_block = new_immBlock();
4854 set_cur_block(body_block);
4855 statement_to_firm(statement->body);
4856 ir_node *false_block = break_label;
4858 assert(continue_label == header_block);
4859 continue_label = old_continue_label;
4860 break_label = old_break_label;
4862 if (get_cur_block() != NULL) {
4864 add_immBlock_pred(header_block, jmp);
4867 /* shortcut for while(true) */
4868 if (is_constant_expression(statement->condition)
4869 && fold_constant_to_bool(statement->condition) != 0) {
4870 set_cur_block(header_block);
4871 ir_node *header_jmp = new_Jmp();
4872 add_immBlock_pred(body_block, header_jmp);
4874 keep_alive(body_block);
4875 keep_all_memory(body_block);
4876 set_cur_block(body_block);
4878 if (false_block == NULL) {
4879 false_block = new_immBlock();
4882 /* create the condition */
4883 set_cur_block(header_block);
4885 create_condition_evaluation(statement->condition, body_block,
4889 mature_immBlock(body_block);
4890 mature_immBlock(header_block);
4891 if (false_block != NULL) {
4892 mature_immBlock(false_block);
4895 set_cur_block(false_block);
4898 static void do_while_statement_to_firm(do_while_statement_t *statement)
4900 ir_node *jmp = NULL;
4901 if (get_cur_block() != NULL) {
4905 /* create the header block */
4906 ir_node *header_block = new_immBlock();
4909 ir_node *body_block = new_immBlock();
4911 add_immBlock_pred(body_block, jmp);
4914 ir_node *old_continue_label = continue_label;
4915 ir_node *old_break_label = break_label;
4916 continue_label = header_block;
4919 set_cur_block(body_block);
4920 statement_to_firm(statement->body);
4921 ir_node *false_block = break_label;
4923 assert(continue_label == header_block);
4924 continue_label = old_continue_label;
4925 break_label = old_break_label;
4927 if (get_cur_block() != NULL) {
4928 ir_node *body_jmp = new_Jmp();
4929 add_immBlock_pred(header_block, body_jmp);
4930 mature_immBlock(header_block);
4933 if (false_block == NULL) {
4934 false_block = new_immBlock();
4937 /* create the condition */
4938 set_cur_block(header_block);
4940 create_condition_evaluation(statement->condition, body_block, false_block);
4941 mature_immBlock(body_block);
4942 mature_immBlock(header_block);
4943 mature_immBlock(false_block);
4945 set_cur_block(false_block);
4948 static void for_statement_to_firm(for_statement_t *statement)
4950 ir_node *jmp = NULL;
4952 /* create declarations */
4953 entity_t *entity = statement->scope.entities;
4954 for ( ; entity != NULL; entity = entity->base.next) {
4955 if (!is_declaration(entity))
4958 create_local_declaration(entity);
4961 if (get_cur_block() != NULL) {
4962 entity = statement->scope.entities;
4963 for ( ; entity != NULL; entity = entity->base.next) {
4964 if (!is_declaration(entity))
4967 initialize_local_declaration(entity);
4970 if (statement->initialisation != NULL) {
4971 expression_to_firm(statement->initialisation);
4978 /* create the step block */
4979 ir_node *const step_block = new_immBlock();
4980 set_cur_block(step_block);
4981 if (statement->step != NULL) {
4982 expression_to_firm(statement->step);
4984 ir_node *const step_jmp = new_Jmp();
4986 /* create the header block */
4987 ir_node *const header_block = new_immBlock();
4988 set_cur_block(header_block);
4990 add_immBlock_pred(header_block, jmp);
4992 add_immBlock_pred(header_block, step_jmp);
4994 /* the false block */
4995 ir_node *const false_block = new_immBlock();
4998 ir_node *body_block;
4999 if (statement->body != NULL) {
5000 ir_node *const old_continue_label = continue_label;
5001 ir_node *const old_break_label = break_label;
5002 continue_label = step_block;
5003 break_label = false_block;
5005 body_block = new_immBlock();
5006 set_cur_block(body_block);
5007 statement_to_firm(statement->body);
5009 assert(continue_label == step_block);
5010 assert(break_label == false_block);
5011 continue_label = old_continue_label;
5012 break_label = old_break_label;
5014 if (get_cur_block() != NULL) {
5016 add_immBlock_pred(step_block, jmp);
5019 body_block = step_block;
5022 /* create the condition */
5023 set_cur_block(header_block);
5024 if (statement->condition != NULL) {
5025 create_condition_evaluation(statement->condition, body_block,
5028 keep_alive(header_block);
5029 keep_all_memory(header_block);
5031 add_immBlock_pred(body_block, jmp);
5034 mature_immBlock(body_block);
5035 mature_immBlock(false_block);
5036 mature_immBlock(step_block);
5037 mature_immBlock(header_block);
5038 mature_immBlock(false_block);
5040 set_cur_block(false_block);
5043 static void create_jump_statement(const statement_t *statement,
5044 ir_node *target_block)
5046 if (get_cur_block() == NULL)
5049 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5050 ir_node *jump = new_d_Jmp(dbgi);
5051 add_immBlock_pred(target_block, jump);
5053 set_cur_block(NULL);
5056 static ir_node *get_break_label(void)
5058 if (break_label == NULL) {
5059 break_label = new_immBlock();
5064 static void switch_statement_to_firm(switch_statement_t *statement)
5066 ir_node *first_block = NULL;
5067 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5068 ir_node *cond = NULL;
5070 if (get_cur_block() != NULL) {
5071 ir_node *expression = expression_to_firm(statement->expression);
5072 cond = new_d_Cond(dbgi, expression);
5073 first_block = get_cur_block();
5076 set_cur_block(NULL);
5078 ir_node *const old_switch_cond = current_switch_cond;
5079 ir_node *const old_break_label = break_label;
5080 const bool old_saw_default_label = saw_default_label;
5081 saw_default_label = false;
5082 current_switch_cond = cond;
5084 switch_statement_t *const old_switch = current_switch;
5085 current_switch = statement;
5087 /* determine a free number for the default label */
5088 unsigned long num_cases = 0;
5090 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
5091 if (l->expression == NULL) {
5095 if (l->last_case >= l->first_case)
5096 num_cases += l->last_case - l->first_case + 1;
5097 if (l->last_case > def_nr)
5098 def_nr = l->last_case;
5101 if (def_nr == INT_MAX) {
5102 /* Bad: an overflow will occur, we cannot be sure that the
5103 * maximum + 1 is a free number. Scan the values a second
5104 * time to find a free number.
5106 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
5108 memset(bits, 0, (num_cases + 7) >> 3);
5109 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
5110 if (l->expression == NULL) {
5114 unsigned long start = l->first_case > 0 ? (unsigned long)l->first_case : 0;
5115 if (start < num_cases && l->last_case >= 0) {
5116 unsigned long end = (unsigned long)l->last_case < num_cases ?
5117 (unsigned long)l->last_case : num_cases - 1;
5118 for (unsigned long cns = start; cns <= end; ++cns) {
5119 bits[cns >> 3] |= (1 << (cns & 7));
5123 /* We look at the first num_cases constants:
5124 * Either they are dense, so we took the last (num_cases)
5125 * one, or they are not dense, so we will find one free
5129 for (i = 0; i < num_cases; ++i)
5130 if ((bits[i >> 3] & (1 << (i & 7))) == 0)
5138 statement->default_proj_nr = def_nr;
5140 if (statement->body != NULL) {
5141 statement_to_firm(statement->body);
5144 if (get_cur_block() != NULL) {
5145 ir_node *jmp = new_Jmp();
5146 add_immBlock_pred(get_break_label(), jmp);
5149 if (!saw_default_label && first_block != NULL) {
5150 set_cur_block(first_block);
5151 ir_node *const proj = new_d_defaultProj(dbgi, cond,
5152 statement->default_proj_nr);
5153 add_immBlock_pred(get_break_label(), proj);
5156 if (break_label != NULL) {
5157 mature_immBlock(break_label);
5159 set_cur_block(break_label);
5161 assert(current_switch_cond == cond);
5162 current_switch = old_switch;
5163 current_switch_cond = old_switch_cond;
5164 break_label = old_break_label;
5165 saw_default_label = old_saw_default_label;
5168 static void case_label_to_firm(const case_label_statement_t *statement)
5170 if (statement->is_empty_range)
5173 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5175 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
5178 ir_node *block = new_immBlock();
5180 if (current_switch_cond != NULL) {
5181 set_cur_block(get_nodes_block(current_switch_cond));
5182 if (statement->expression != NULL) {
5183 long pn = statement->first_case;
5184 long end_pn = statement->last_case;
5185 assert(pn <= end_pn);
5186 /* create jumps for all cases in the given range */
5188 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
5189 add_immBlock_pred(block, proj);
5190 } while (pn++ < end_pn);
5192 saw_default_label = true;
5193 proj = new_d_defaultProj(dbgi, current_switch_cond,
5194 current_switch->default_proj_nr);
5196 add_immBlock_pred(block, proj);
5200 if (fallthrough != NULL) {
5201 add_immBlock_pred(block, fallthrough);
5203 mature_immBlock(block);
5204 set_cur_block(block);
5206 if (statement->statement != NULL) {
5207 statement_to_firm(statement->statement);
5211 static void label_to_firm(const label_statement_t *statement)
5213 ir_node *block = get_label_block(statement->label);
5215 if (get_cur_block() != NULL) {
5216 ir_node *jmp = new_Jmp();
5217 add_immBlock_pred(block, jmp);
5220 set_cur_block(block);
5222 keep_all_memory(block);
5224 if (statement->statement != NULL) {
5225 statement_to_firm(statement->statement);
5229 static void goto_to_firm(const goto_statement_t *statement)
5231 if (get_cur_block() == NULL)
5234 if (statement->expression) {
5235 ir_node *irn = expression_to_firm(statement->expression);
5236 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5237 ir_node *ijmp = new_d_IJmp(dbgi, irn);
5239 set_irn_link(ijmp, ijmp_list);
5242 ir_node *block = get_label_block(statement->label);
5243 ir_node *jmp = new_Jmp();
5244 add_immBlock_pred(block, jmp);
5246 set_cur_block(NULL);
5249 static void asm_statement_to_firm(const asm_statement_t *statement)
5251 bool needs_memory = false;
5253 if (statement->is_volatile) {
5254 needs_memory = true;
5257 size_t n_clobbers = 0;
5258 asm_clobber_t *clobber = statement->clobbers;
5259 for ( ; clobber != NULL; clobber = clobber->next) {
5260 const char *clobber_str = clobber->clobber.begin;
5262 if (!be_is_valid_clobber(clobber_str)) {
5263 errorf(&statement->base.source_position,
5264 "invalid clobber '%s' specified", clobber->clobber);
5268 if (strcmp(clobber_str, "memory") == 0) {
5269 needs_memory = true;
5273 ident *id = new_id_from_str(clobber_str);
5274 obstack_ptr_grow(&asm_obst, id);
5277 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
5278 ident **clobbers = NULL;
5279 if (n_clobbers > 0) {
5280 clobbers = obstack_finish(&asm_obst);
5283 size_t n_inputs = 0;
5284 asm_argument_t *argument = statement->inputs;
5285 for ( ; argument != NULL; argument = argument->next)
5287 size_t n_outputs = 0;
5288 argument = statement->outputs;
5289 for ( ; argument != NULL; argument = argument->next)
5292 unsigned next_pos = 0;
5294 ir_node *ins[n_inputs + n_outputs + 1];
5297 ir_asm_constraint tmp_in_constraints[n_outputs];
5299 const expression_t *out_exprs[n_outputs];
5300 ir_node *out_addrs[n_outputs];
5301 size_t out_size = 0;
5303 argument = statement->outputs;
5304 for ( ; argument != NULL; argument = argument->next) {
5305 const char *constraints = argument->constraints.begin;
5306 asm_constraint_flags_t asm_flags
5307 = be_parse_asm_constraints(constraints);
5309 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5310 warningf(&statement->base.source_position,
5311 "some constraints in '%s' are not supported", constraints);
5313 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5314 errorf(&statement->base.source_position,
5315 "some constraints in '%s' are invalid", constraints);
5318 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
5319 errorf(&statement->base.source_position,
5320 "no write flag specified for output constraints '%s'",
5325 unsigned pos = next_pos++;
5326 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5327 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5328 expression_t *expr = argument->expression;
5329 ir_node *addr = expression_to_addr(expr);
5330 /* in+output, construct an artifical same_as constraint on the
5332 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
5334 ir_node *value = get_value_from_lvalue(expr, addr);
5336 snprintf(buf, sizeof(buf), "%u", (unsigned) out_size);
5338 ir_asm_constraint constraint;
5339 constraint.pos = pos;
5340 constraint.constraint = new_id_from_str(buf);
5341 constraint.mode = get_ir_mode_storage(expr->base.type);
5342 tmp_in_constraints[in_size] = constraint;
5343 ins[in_size] = value;
5348 out_exprs[out_size] = expr;
5349 out_addrs[out_size] = addr;
5351 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5352 /* pure memory ops need no input (but we have to make sure we
5353 * attach to the memory) */
5354 assert(! (asm_flags &
5355 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5356 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5357 needs_memory = true;
5359 /* we need to attach the address to the inputs */
5360 expression_t *expr = argument->expression;
5362 ir_asm_constraint constraint;
5363 constraint.pos = pos;
5364 constraint.constraint = new_id_from_str(constraints);
5365 constraint.mode = NULL;
5366 tmp_in_constraints[in_size] = constraint;
5368 ins[in_size] = expression_to_addr(expr);
5372 errorf(&statement->base.source_position,
5373 "only modifiers but no place set in constraints '%s'",
5378 ir_asm_constraint constraint;
5379 constraint.pos = pos;
5380 constraint.constraint = new_id_from_str(constraints);
5381 constraint.mode = get_ir_mode_storage(argument->expression->base.type);
5383 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5385 assert(obstack_object_size(&asm_obst)
5386 == out_size * sizeof(ir_asm_constraint));
5387 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
5390 obstack_grow(&asm_obst, tmp_in_constraints,
5391 in_size * sizeof(tmp_in_constraints[0]));
5392 /* find and count input and output arguments */
5393 argument = statement->inputs;
5394 for ( ; argument != NULL; argument = argument->next) {
5395 const char *constraints = argument->constraints.begin;
5396 asm_constraint_flags_t asm_flags
5397 = be_parse_asm_constraints(constraints);
5399 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5400 errorf(&statement->base.source_position,
5401 "some constraints in '%s' are not supported", constraints);
5404 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5405 errorf(&statement->base.source_position,
5406 "some constraints in '%s' are invalid", constraints);
5409 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
5410 errorf(&statement->base.source_position,
5411 "write flag specified for input constraints '%s'",
5417 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5418 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5419 /* we can treat this as "normal" input */
5420 input = expression_to_firm(argument->expression);
5421 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5422 /* pure memory ops need no input (but we have to make sure we
5423 * attach to the memory) */
5424 assert(! (asm_flags &
5425 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5426 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5427 needs_memory = true;
5428 input = expression_to_addr(argument->expression);
5430 errorf(&statement->base.source_position,
5431 "only modifiers but no place set in constraints '%s'",
5436 ir_asm_constraint constraint;
5437 constraint.pos = next_pos++;
5438 constraint.constraint = new_id_from_str(constraints);
5439 constraint.mode = get_irn_mode(input);
5441 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5442 ins[in_size++] = input;
5446 ir_asm_constraint constraint;
5447 constraint.pos = next_pos++;
5448 constraint.constraint = new_id_from_str("");
5449 constraint.mode = mode_M;
5451 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5452 ins[in_size++] = get_store();
5455 assert(obstack_object_size(&asm_obst)
5456 == in_size * sizeof(ir_asm_constraint));
5457 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
5459 /* create asm node */
5460 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
5462 ident *asm_text = new_id_from_str(statement->asm_text.begin);
5464 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
5465 out_size, output_constraints,
5466 n_clobbers, clobbers, asm_text);
5468 if (statement->is_volatile) {
5469 set_irn_pinned(node, op_pin_state_pinned);
5471 set_irn_pinned(node, op_pin_state_floats);
5474 /* create output projs & connect them */
5476 ir_node *projm = new_Proj(node, mode_M, out_size+1);
5481 for (i = 0; i < out_size; ++i) {
5482 const expression_t *out_expr = out_exprs[i];
5484 ir_mode *mode = get_ir_mode_storage(out_expr->base.type);
5485 ir_node *proj = new_Proj(node, mode, pn);
5486 ir_node *addr = out_addrs[i];
5488 set_value_for_expression_addr(out_expr, proj, addr);
5492 static void ms_try_statement_to_firm(ms_try_statement_t *statement)
5494 statement_to_firm(statement->try_statement);
5495 warningf(&statement->base.source_position, "structured exception handling ignored");
5498 static void leave_statement_to_firm(leave_statement_t *statement)
5500 errorf(&statement->base.source_position, "__leave not supported yet");
5504 * Transform a statement.
5506 static void statement_to_firm(statement_t *statement)
5509 assert(!statement->base.transformed);
5510 statement->base.transformed = true;
5513 switch (statement->kind) {
5514 case STATEMENT_INVALID:
5515 panic("invalid statement found");
5516 case STATEMENT_EMPTY:
5519 case STATEMENT_COMPOUND:
5520 compound_statement_to_firm(&statement->compound);
5522 case STATEMENT_RETURN:
5523 return_statement_to_firm(&statement->returns);
5525 case STATEMENT_EXPRESSION:
5526 expression_statement_to_firm(&statement->expression);
5529 if_statement_to_firm(&statement->ifs);
5531 case STATEMENT_WHILE:
5532 while_statement_to_firm(&statement->whiles);
5534 case STATEMENT_DO_WHILE:
5535 do_while_statement_to_firm(&statement->do_while);
5537 case STATEMENT_DECLARATION:
5538 declaration_statement_to_firm(&statement->declaration);
5540 case STATEMENT_BREAK:
5541 create_jump_statement(statement, get_break_label());
5543 case STATEMENT_CONTINUE:
5544 create_jump_statement(statement, continue_label);
5546 case STATEMENT_SWITCH:
5547 switch_statement_to_firm(&statement->switchs);
5549 case STATEMENT_CASE_LABEL:
5550 case_label_to_firm(&statement->case_label);
5553 for_statement_to_firm(&statement->fors);
5555 case STATEMENT_LABEL:
5556 label_to_firm(&statement->label);
5558 case STATEMENT_GOTO:
5559 goto_to_firm(&statement->gotos);
5562 asm_statement_to_firm(&statement->asms);
5564 case STATEMENT_MS_TRY:
5565 ms_try_statement_to_firm(&statement->ms_try);
5567 case STATEMENT_LEAVE:
5568 leave_statement_to_firm(&statement->leave);
5571 panic("statement not implemented");
5574 static int count_local_variables(const entity_t *entity,
5575 const entity_t *const last)
5578 entity_t const *const end = last != NULL ? last->base.next : NULL;
5579 for (; entity != end; entity = entity->base.next) {
5583 if (entity->kind == ENTITY_VARIABLE) {
5584 type = skip_typeref(entity->declaration.type);
5585 address_taken = entity->variable.address_taken;
5586 } else if (entity->kind == ENTITY_PARAMETER) {
5587 type = skip_typeref(entity->declaration.type);
5588 address_taken = entity->parameter.address_taken;
5593 if (!address_taken && is_type_scalar(type))
5599 static void count_local_variables_in_stmt(statement_t *stmt, void *const env)
5601 int *const count = env;
5603 switch (stmt->kind) {
5604 case STATEMENT_DECLARATION: {
5605 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5606 *count += count_local_variables(decl_stmt->declarations_begin,
5607 decl_stmt->declarations_end);
5612 *count += count_local_variables(stmt->fors.scope.entities, NULL);
5621 * Return the number of local (alias free) variables used by a function.
5623 static int get_function_n_local_vars(entity_t *entity)
5625 const function_t *function = &entity->function;
5628 /* count parameters */
5629 count += count_local_variables(function->parameters.entities, NULL);
5631 /* count local variables declared in body */
5632 walk_statements(function->statement, count_local_variables_in_stmt, &count);
5637 * Build Firm code for the parameters of a function.
5639 static void initialize_function_parameters(entity_t *entity)
5641 assert(entity->kind == ENTITY_FUNCTION);
5642 ir_graph *irg = current_ir_graph;
5643 ir_node *args = get_irg_args(irg);
5644 ir_node *start_block = get_irg_start_block(irg);
5645 ir_type *function_irtype = get_ir_type(entity->declaration.type);
5646 int first_param_nr = 0;
5648 if (entity->function.need_closure) {
5649 /* add an extra parameter for the static link */
5650 entity->function.static_link = new_r_Proj(start_block, args, mode_P_data, 0);
5655 entity_t *parameter = entity->function.parameters.entities;
5656 for ( ; parameter != NULL; parameter = parameter->base.next, ++n) {
5657 if (parameter->kind != ENTITY_PARAMETER)
5660 assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN);
5661 type_t *type = skip_typeref(parameter->declaration.type);
5663 bool needs_entity = parameter->parameter.address_taken;
5664 assert(!is_type_array(type));
5665 if (is_type_compound(type)) {
5666 needs_entity = true;
5670 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5671 ident *id = new_id_from_str(parameter->base.symbol->string);
5672 set_entity_ident(entity, id);
5674 parameter->declaration.kind
5675 = DECLARATION_KIND_PARAMETER_ENTITY;
5676 parameter->parameter.v.entity = entity;
5680 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5681 ir_mode *param_mode = get_type_mode(param_irtype);
5683 long pn = n + first_param_nr;
5684 ir_node *value = new_r_Proj(start_block, args, param_mode, pn);
5686 ir_mode *mode = get_ir_mode_storage(type);
5687 value = create_conv(NULL, value, mode);
5688 value = do_strict_conv(NULL, value);
5690 parameter->declaration.kind = DECLARATION_KIND_PARAMETER;
5691 parameter->parameter.v.value_number = next_value_number_function;
5692 set_irg_loc_description(current_ir_graph, next_value_number_function,
5694 ++next_value_number_function;
5696 set_value(parameter->parameter.v.value_number, value);
5701 * Handle additional decl modifiers for IR-graphs
5703 * @param irg the IR-graph
5704 * @param dec_modifiers additional modifiers
5706 static void handle_decl_modifier_irg(ir_graph_ptr irg,
5707 decl_modifiers_t decl_modifiers)
5709 if (decl_modifiers & DM_RETURNS_TWICE) {
5710 /* TRUE if the declaration includes __attribute__((returns_twice)) */
5711 set_irg_additional_property(irg, mtp_property_returns_twice);
5713 if (decl_modifiers & DM_NORETURN) {
5714 /* TRUE if the declaration includes the Microsoft
5715 __declspec(noreturn) specifier. */
5716 set_irg_additional_property(irg, mtp_property_noreturn);
5718 if (decl_modifiers & DM_NOTHROW) {
5719 /* TRUE if the declaration includes the Microsoft
5720 __declspec(nothrow) specifier. */
5721 set_irg_additional_property(irg, mtp_property_nothrow);
5723 if (decl_modifiers & DM_NAKED) {
5724 /* TRUE if the declaration includes the Microsoft
5725 __declspec(naked) specifier. */
5726 set_irg_additional_property(irg, mtp_property_naked);
5728 if (decl_modifiers & DM_FORCEINLINE) {
5729 /* TRUE if the declaration includes the
5730 Microsoft __forceinline specifier. */
5731 set_irg_inline_property(irg, irg_inline_forced);
5733 if (decl_modifiers & DM_NOINLINE) {
5734 /* TRUE if the declaration includes the Microsoft
5735 __declspec(noinline) specifier. */
5736 set_irg_inline_property(irg, irg_inline_forbidden);
5740 static void add_function_pointer(ir_type *segment, ir_entity *method,
5741 const char *unique_template)
5743 ir_type *method_type = get_entity_type(method);
5744 ir_type *ptr_type = new_type_pointer(method_type);
5746 /* these entities don't really have a name but firm only allows
5748 * Note that we mustn't give these entities a name since for example
5749 * Mach-O doesn't allow them. */
5750 ident *ide = id_unique(unique_template);
5751 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5752 ir_graph *irg = get_const_code_irg();
5753 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5756 set_entity_ld_ident(ptr, new_id_from_chars("", 0));
5757 set_entity_compiler_generated(ptr, 1);
5758 set_entity_visibility(ptr, ir_visibility_local);
5759 add_entity_linkage(ptr, IR_LINKAGE_CONSTANT|IR_LINKAGE_HIDDEN_USER);
5760 set_atomic_ent_value(ptr, val);
5764 * Generate possible IJmp branches to a given label block.
5766 static void gen_ijmp_branches(ir_node *block)
5769 for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) {
5770 add_immBlock_pred(block, ijmp);
5775 * Create code for a function and all inner functions.
5777 * @param entity the function entity
5779 static void create_function(entity_t *entity)
5781 assert(entity->kind == ENTITY_FUNCTION);
5782 ir_entity *function_entity = get_function_entity(entity, current_outer_frame);
5784 if (entity->function.statement == NULL)
5787 if (is_main(entity) && firm_opt.os_support == OS_SUPPORT_MINGW) {
5788 prepare_main_collect2(entity);
5791 inner_functions = NULL;
5792 current_trampolines = NULL;
5794 if (entity->declaration.modifiers & DM_CONSTRUCTOR) {
5795 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5796 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5798 if (entity->declaration.modifiers & DM_DESTRUCTOR) {
5799 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5800 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5803 current_function_entity = entity;
5804 current_function_name = NULL;
5805 current_funcsig = NULL;
5807 assert(all_labels == NULL);
5808 all_labels = NEW_ARR_F(label_t *, 0);
5811 int n_local_vars = get_function_n_local_vars(entity);
5812 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5814 ir_graph *old_current_function = current_function;
5815 current_function = irg;
5817 set_irg_fp_model(irg, firm_opt.fp_model);
5818 tarval_enable_fp_ops(1);
5819 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5821 ir_node *first_block = get_cur_block();
5823 /* set inline flags */
5824 if (entity->function.is_inline)
5825 set_irg_inline_property(irg, irg_inline_recomended);
5826 handle_decl_modifier_irg(irg, entity->declaration.modifiers);
5828 next_value_number_function = 0;
5829 initialize_function_parameters(entity);
5830 current_static_link = entity->function.static_link;
5832 statement_to_firm(entity->function.statement);
5834 ir_node *end_block = get_irg_end_block(irg);
5836 /* do we have a return statement yet? */
5837 if (get_cur_block() != NULL) {
5838 type_t *type = skip_typeref(entity->declaration.type);
5839 assert(is_type_function(type));
5840 const function_type_t *func_type = &type->function;
5841 const type_t *return_type
5842 = skip_typeref(func_type->return_type);
5845 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5846 ret = new_Return(get_store(), 0, NULL);
5849 if (is_type_scalar(return_type)) {
5850 mode = get_ir_mode_storage(func_type->return_type);
5856 /* ยง5.1.2.2.3 main implicitly returns 0 */
5857 if (is_main(entity)) {
5858 in[0] = new_Const(get_mode_null(mode));
5860 in[0] = new_Unknown(mode);
5862 ret = new_Return(get_store(), 1, in);
5864 add_immBlock_pred(end_block, ret);
5867 bool has_computed_gotos = false;
5868 for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
5869 label_t *label = all_labels[i];
5870 if (label->address_taken) {
5871 gen_ijmp_branches(label->block);
5872 has_computed_gotos = true;
5874 mature_immBlock(label->block);
5876 if (has_computed_gotos) {
5877 /* if we have computed goto's in the function, we cannot inline it */
5878 if (get_irg_inline_property(irg) >= irg_inline_recomended) {
5879 warningf(&entity->base.source_position,
5880 "function '%Y' can never be inlined because it contains a computed goto",
5881 entity->base.symbol);
5883 set_irg_inline_property(irg, irg_inline_forbidden);
5886 DEL_ARR_F(all_labels);
5889 mature_immBlock(first_block);
5890 mature_immBlock(end_block);
5892 irg_finalize_cons(irg);
5894 /* finalize the frame type */
5895 ir_type *frame_type = get_irg_frame_type(irg);
5896 int n = get_compound_n_members(frame_type);
5899 for (int i = 0; i < n; ++i) {
5900 ir_entity *entity = get_compound_member(frame_type, i);
5901 ir_type *entity_type = get_entity_type(entity);
5903 int align = get_type_alignment_bytes(entity_type);
5904 if (align > align_all)
5908 misalign = offset % align;
5910 offset += align - misalign;
5914 set_entity_offset(entity, offset);
5915 offset += get_type_size_bytes(entity_type);
5917 set_type_size_bytes(frame_type, offset);
5918 set_type_alignment_bytes(frame_type, align_all);
5921 current_function = old_current_function;
5923 if (current_trampolines != NULL) {
5924 DEL_ARR_F(current_trampolines);
5925 current_trampolines = NULL;
5928 /* create inner functions if any */
5929 entity_t **inner = inner_functions;
5930 if (inner != NULL) {
5931 ir_type *rem_outer_frame = current_outer_frame;
5932 current_outer_frame = get_irg_frame_type(current_ir_graph);
5933 ir_type *rem_outer_value_type = current_outer_value_type;
5934 current_outer_value_type = get_irg_value_param_type(current_ir_graph);
5935 for (int i = ARR_LEN(inner) - 1; i >= 0; --i) {
5936 create_function(inner[i]);
5940 current_outer_value_type = rem_outer_value_type;
5941 current_outer_frame = rem_outer_frame;
5945 static void scope_to_firm(scope_t *scope)
5947 /* first pass: create declarations */
5948 entity_t *entity = scope->entities;
5949 for ( ; entity != NULL; entity = entity->base.next) {
5950 if (entity->base.symbol == NULL)
5953 if (entity->kind == ENTITY_FUNCTION) {
5954 if (entity->function.btk != bk_none) {
5955 /* builtins have no representation */
5958 (void)get_function_entity(entity, NULL);
5959 } else if (entity->kind == ENTITY_VARIABLE) {
5960 create_global_variable(entity);
5961 } else if (entity->kind == ENTITY_NAMESPACE) {
5962 scope_to_firm(&entity->namespacee.members);
5966 /* second pass: create code/initializers */
5967 entity = scope->entities;
5968 for ( ; entity != NULL; entity = entity->base.next) {
5969 if (entity->base.symbol == NULL)
5972 if (entity->kind == ENTITY_FUNCTION) {
5973 if (entity->function.btk != bk_none) {
5974 /* builtins have no representation */
5977 create_function(entity);
5978 } else if (entity->kind == ENTITY_VARIABLE) {
5979 assert(entity->declaration.kind
5980 == DECLARATION_KIND_GLOBAL_VARIABLE);
5981 current_ir_graph = get_const_code_irg();
5982 create_variable_initializer(entity);
5987 void init_ast2firm(void)
5989 obstack_init(&asm_obst);
5990 init_atomic_modes();
5992 ir_set_debug_retrieve(dbg_retrieve);
5993 ir_set_type_debug_retrieve(dbg_print_type_dbg_info);
5995 /* OS option must be set to the backend */
5996 switch (firm_opt.os_support) {
5997 case OS_SUPPORT_MINGW:
5998 create_ld_ident = create_name_win32;
6000 case OS_SUPPORT_LINUX:
6001 create_ld_ident = create_name_linux_elf;
6003 case OS_SUPPORT_MACHO:
6004 create_ld_ident = create_name_macho;
6007 panic("unexpected OS support mode");
6010 /* create idents for all known runtime functions */
6011 for (size_t i = 0; i < lengthof(rts_data); ++i) {
6012 rts_idents[i] = new_id_from_str(rts_data[i].name);
6015 entitymap_init(&entitymap);
6018 static void init_ir_types(void)
6020 static int ir_types_initialized = 0;
6021 if (ir_types_initialized)
6023 ir_types_initialized = 1;
6025 ir_type_int = get_ir_type(type_int);
6026 ir_type_char = get_ir_type(type_char);
6027 ir_type_const_char = get_ir_type(type_const_char);
6028 ir_type_wchar_t = get_ir_type(type_wchar_t);
6029 ir_type_void = get_ir_type(type_void);
6031 be_params = be_get_backend_param();
6032 mode_float_arithmetic = be_params->mode_float_arithmetic;
6034 stack_param_align = be_params->stack_param_align;
6037 void exit_ast2firm(void)
6039 entitymap_destroy(&entitymap);
6040 obstack_free(&asm_obst, NULL);
6043 static void global_asm_to_firm(statement_t *s)
6045 for (; s != NULL; s = s->base.next) {
6046 assert(s->kind == STATEMENT_ASM);
6048 char const *const text = s->asms.asm_text.begin;
6049 size_t size = s->asms.asm_text.size;
6051 /* skip the last \0 */
6052 if (text[size - 1] == '\0')
6055 ident *const id = new_id_from_chars(text, size);
6060 void translation_unit_to_firm(translation_unit_t *unit)
6062 /* initialize firm arithmetic */
6063 tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP);
6065 /* just to be sure */
6066 continue_label = NULL;
6068 current_switch_cond = NULL;
6069 current_translation_unit = unit;
6073 scope_to_firm(&unit->scope);
6074 global_asm_to_firm(unit->global_asm);
6076 current_ir_graph = NULL;
6077 current_translation_unit = NULL;