2 * This file is part of cparser.
3 * Copyright (C) 2012 Matthias Braun <matze@braunis.de>
13 #include <libfirm/firm.h>
14 #include <libfirm/adt/obst.h>
15 #include <libfirm/be.h>
19 #include "adt/error.h"
20 #include "adt/array.h"
21 #include "adt/strutil.h"
23 #include "jump_target.h"
30 #include "diagnostic.h"
31 #include "lang_features.h"
33 #include "type_hash.h"
38 #include "entitymap_t.h"
39 #include "driver/firm_opt.h"
41 typedef struct trampoline_region trampoline_region;
42 struct trampoline_region {
43 ir_entity *function; /**< The function that is called by this trampoline */
44 ir_entity *region; /**< created region for the trampoline */
47 typedef struct complex_value {
52 typedef struct complex_constant {
57 fp_model_t firm_fp_model = fp_model_precise;
59 static const backend_params *be_params;
61 static ir_type *ir_type_char;
63 /* architecture specific floating point arithmetic mode (if any) */
64 static ir_mode *mode_float_arithmetic;
66 /* alignment of stack parameters */
67 static unsigned stack_param_align;
69 static int next_value_number_function;
70 static jump_target continue_target;
71 static jump_target break_target;
72 static ir_node *current_switch;
73 static bool saw_default_label;
74 static entity_t **inner_functions;
75 static jump_target ijmp_target;
76 static ir_node **ijmp_ops;
77 static ir_node **ijmp_blocks;
78 static bool constant_folding;
80 #define PUSH_BREAK(val) \
81 jump_target const old_break_target = break_target; \
82 (init_jump_target(&break_target, (val)))
84 ((void)(break_target = old_break_target))
86 #define PUSH_CONTINUE(val) \
87 jump_target const old_continue_target = continue_target; \
88 (init_jump_target(&continue_target, (val)))
89 #define POP_CONTINUE() \
90 ((void)(continue_target = old_continue_target))
92 #define PUSH_IRG(val) \
93 ir_graph *const old_irg = current_ir_graph; \
94 ir_graph *const new_irg = (val); \
95 ((void)(current_ir_graph = new_irg))
98 (assert(current_ir_graph == new_irg), (void)(current_ir_graph = old_irg))
100 static const entity_t *current_function_entity;
101 static ir_node *current_function_name;
102 static ir_node *current_funcsig;
103 static ir_graph *current_function;
104 static translation_unit_t *current_translation_unit;
105 static trampoline_region *current_trampolines;
106 static ir_type *current_outer_frame;
107 static ir_node *current_static_link;
108 static ir_entity *current_vararg_entity;
110 static entitymap_t entitymap;
112 static struct obstack asm_obst;
114 typedef enum declaration_kind_t {
115 DECLARATION_KIND_UNKNOWN,
116 DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
117 DECLARATION_KIND_GLOBAL_VARIABLE,
118 DECLARATION_KIND_LOCAL_VARIABLE,
119 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
120 DECLARATION_KIND_PARAMETER,
121 DECLARATION_KIND_PARAMETER_ENTITY,
122 DECLARATION_KIND_FUNCTION,
123 DECLARATION_KIND_COMPOUND_MEMBER,
124 DECLARATION_KIND_INNER_FUNCTION
125 } declaration_kind_t;
127 static ir_type *get_ir_type_incomplete(type_t *type);
129 static void enqueue_inner_function(entity_t *entity)
131 if (inner_functions == NULL)
132 inner_functions = NEW_ARR_F(entity_t *, 0);
133 ARR_APP1(entity_t*, inner_functions, entity);
136 static ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
138 const entity_t *entity = get_irg_loc_description(irg, pos);
140 warningf(WARN_UNINITIALIZED, &entity->base.pos, "'%N' might be used uninitialized", entity);
141 return new_r_Unknown(irg, mode);
144 static src_loc_t dbg_retrieve(const dbg_info *dbg)
146 position_t const *const pos = (position_t const*)dbg;
148 return (src_loc_t){ pos->input_name, pos->lineno, pos->colno };
150 return (src_loc_t){ NULL, 0, 0 };
154 static dbg_info *get_dbg_info(const position_t *pos)
156 return (dbg_info*) pos;
159 static void dbg_print_type_dbg_info(char *buffer, size_t buffer_size,
160 const type_dbg_info *dbg)
163 print_to_buffer(buffer, buffer_size);
164 const type_t *type = (const type_t*) dbg;
166 finish_print_to_buffer();
169 static type_dbg_info *get_type_dbg_info_(const type_t *type)
171 return (type_dbg_info*) type;
174 /* is the current block a reachable one? */
175 static bool currently_reachable(void)
177 ir_node *const block = get_cur_block();
178 return block != NULL && !is_Bad(block);
181 static void set_unreachable_now(void)
186 ir_mode *atomic_modes[ATOMIC_TYPE_LAST+1];
188 static ir_node *expression_to_control_flow(expression_t const *expr, jump_target *true_target, jump_target *false_target);
189 static ir_node *expression_to_value(expression_t const *expr);
190 static complex_value expression_to_complex(const expression_t *expression);
192 static unsigned decide_modulo_shift(unsigned type_size)
194 if (architecture_modulo_shift == 0)
196 if (type_size < architecture_modulo_shift)
197 return architecture_modulo_shift;
201 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
203 unsigned flags = get_atomic_type_flags(kind);
204 unsigned size = get_atomic_type_size(kind);
205 if (flags & ATOMIC_TYPE_FLAG_FLOAT) {
207 case 4: return get_modeF();
208 case 8: return get_modeD();
209 default: panic("unexpected kind");
211 } else if (flags & ATOMIC_TYPE_FLAG_INTEGER) {
213 unsigned bit_size = size * 8;
214 bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
215 unsigned modulo_shift = decide_modulo_shift(bit_size);
217 snprintf(name, sizeof(name), "%s%u", is_signed ? "I" : "U", bit_size);
218 return new_int_mode(name, irma_twos_complement, bit_size, is_signed,
226 * Initialises the atomic modes depending on the machine size.
228 static void init_atomic_modes(void)
230 atomic_modes[ATOMIC_TYPE_VOID] = mode_ANY;
231 for (int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
232 if (atomic_modes[i] != NULL)
234 atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
238 ir_mode *get_atomic_mode(atomic_type_kind_t kind)
240 assert(kind <= ATOMIC_TYPE_LAST);
241 return atomic_modes[kind];
244 static ir_node *get_vla_size(array_type_t *const type)
246 ir_node *size_node = type->size_node;
247 if (size_node == NULL) {
248 size_node = expression_to_value(type->size_expression);
249 type->size_node = size_node;
254 static unsigned count_parameters(const function_type_t *function_type)
258 function_parameter_t *parameter = function_type->parameters;
259 for ( ; parameter != NULL; parameter = parameter->next) {
266 static ir_type *create_primitive_irtype(atomic_type_kind_t akind,
269 ir_mode *mode = atomic_modes[akind];
270 ir_type *irtype = new_d_type_primitive(mode, dbgi);
271 unsigned alignment = get_atomic_type_alignment(akind);
272 unsigned size = get_atomic_type_size(akind);
274 set_type_size_bytes(irtype, size);
275 set_type_alignment_bytes(irtype, alignment);
281 * Creates a Firm type for an atomic type
283 static ir_type *create_atomic_type(atomic_type_kind_t akind, const type_t *type)
285 type_dbg_info *dbgi = get_type_dbg_info_(type);
286 return create_primitive_irtype(akind, dbgi);
290 * Creates a Firm type for a complex type
292 static ir_type *create_complex_type(atomic_type_kind_t akind,
295 type_dbg_info *dbgi = get_type_dbg_info_(type);
296 ir_type *etype = create_primitive_irtype(akind, NULL);
297 ir_type *irtype = new_d_type_array(1, etype, dbgi);
299 int align = get_type_alignment_bytes(etype);
300 set_type_alignment_bytes(irtype, align);
301 unsigned n_elements = 2;
302 set_array_bounds_int(irtype, 0, 0, n_elements);
303 size_t elemsize = get_type_size_bytes(etype);
304 if (elemsize % align > 0) {
305 elemsize += align - (elemsize % align);
307 set_type_size_bytes(irtype, n_elements * elemsize);
308 set_type_state(irtype, layout_fixed);
314 * Creates a Firm type for an imaginary type
316 static ir_type *create_imaginary_type(const atomic_type_t *type)
318 return create_atomic_type(type->akind, (const type_t*)type);
322 * return type of a parameter (and take transparent union gnu extension into
325 static type_t *get_parameter_type(type_t *orig_type)
327 type_t *type = skip_typeref(orig_type);
328 if (is_type_union(type)
329 && get_type_modifiers(orig_type) & DM_TRANSPARENT_UNION) {
330 compound_t *compound = type->compound.compound;
331 type = compound->members.entities->declaration.type;
337 static ir_type *create_method_type(const function_type_t *function_type, bool for_closure)
339 type_t *return_type = skip_typeref(function_type->return_type);
341 int n_parameters = count_parameters(function_type)
342 + (for_closure ? 1 : 0);
343 int n_results = is_type_void(return_type) ? 0 : 1;
344 type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) function_type);
345 ir_type *irtype = new_d_type_method(n_parameters, n_results, dbgi);
347 if (!is_type_void(return_type)) {
348 ir_type *restype = get_ir_type(return_type);
349 set_method_res_type(irtype, 0, restype);
352 function_parameter_t *parameter = function_type->parameters;
355 ir_type *p_irtype = get_ir_type(type_void_ptr);
356 set_method_param_type(irtype, n, p_irtype);
359 for ( ; parameter != NULL; parameter = parameter->next) {
360 type_t *type = get_parameter_type(parameter->type);
361 ir_type *p_irtype = get_ir_type(type);
362 set_method_param_type(irtype, n, p_irtype);
366 bool is_variadic = function_type->variadic;
369 set_method_variadicity(irtype, variadicity_variadic);
371 unsigned cc = get_method_calling_convention(irtype);
372 switch (function_type->calling_convention) {
373 case CC_DEFAULT: /* unspecified calling convention, equal to one of the other, typically cdecl */
376 set_method_calling_convention(irtype, SET_CDECL(cc));
383 /* only non-variadic function can use stdcall, else use cdecl */
384 set_method_calling_convention(irtype, SET_STDCALL(cc));
390 /* only non-variadic function can use fastcall, else use cdecl */
391 set_method_calling_convention(irtype, SET_FASTCALL(cc));
395 /* Hmm, leave default, not accepted by the parser yet. */
400 set_method_calling_convention(irtype, get_method_calling_convention(irtype) | cc_this_call);
402 const decl_modifiers_t modifiers = function_type->modifiers;
403 if (modifiers & DM_CONST)
404 add_method_additional_properties(irtype, mtp_property_const);
405 if (modifiers & DM_PURE)
406 add_method_additional_properties(irtype, mtp_property_pure);
407 if (modifiers & DM_RETURNS_TWICE)
408 add_method_additional_properties(irtype, mtp_property_returns_twice);
409 if (modifiers & DM_NORETURN)
410 add_method_additional_properties(irtype, mtp_property_noreturn);
411 if (modifiers & DM_NOTHROW)
412 add_method_additional_properties(irtype, mtp_property_nothrow);
413 if (modifiers & DM_MALLOC)
414 add_method_additional_properties(irtype, mtp_property_malloc);
419 static ir_type *create_pointer_type(pointer_type_t *type)
421 type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) type);
422 type_t *points_to = type->points_to;
423 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
424 ir_type *irtype = new_d_type_pointer(ir_points_to, dbgi);
429 static ir_type *create_reference_type(reference_type_t *type)
431 type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) type);
432 type_t *refers_to = type->refers_to;
433 ir_type *ir_refers_to = get_ir_type_incomplete(refers_to);
434 ir_type *irtype = new_d_type_pointer(ir_refers_to, dbgi);
439 static ir_type *create_array_type(array_type_t *type)
441 type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) type);
442 type_t *element_type = type->element_type;
443 ir_type *ir_element_type = get_ir_type(element_type);
444 ir_type *irtype = new_d_type_array(1, ir_element_type, dbgi);
446 const int align = get_type_alignment_bytes(ir_element_type);
447 set_type_alignment_bytes(irtype, align);
449 if (type->size_constant) {
450 int n_elements = type->size;
452 set_array_bounds_int(irtype, 0, 0, n_elements);
454 size_t elemsize = get_type_size_bytes(ir_element_type);
455 if (elemsize % align > 0) {
456 elemsize += align - (elemsize % align);
458 set_type_size_bytes(irtype, n_elements * elemsize);
460 set_array_lower_bound_int(irtype, 0, 0);
462 set_type_state(irtype, layout_fixed);
468 * Return the signed integer type of size bits.
470 * @param size the size
472 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
476 static ir_mode *s_modes[64 + 1] = {NULL, };
480 if (size <= 0 || size > 64)
483 mode = s_modes[size];
485 ir_mode *base_mode = get_type_mode(base_tp);
486 unsigned modulo_shift = get_mode_modulo_shift(base_mode);
489 snprintf(name, sizeof(name), "bf_I%u", size);
490 mode = new_int_mode(name, irma_twos_complement, size, 1, modulo_shift);
491 s_modes[size] = mode;
494 type_dbg_info *dbgi = get_type_dbg_info_(type);
495 res = new_d_type_primitive(mode, dbgi);
496 set_primitive_base_type(res, base_tp);
502 * Return the unsigned integer type of size bits.
504 * @param size the size
506 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
510 static ir_mode *u_modes[64 + 1] = {NULL, };
514 if (size <= 0 || size > 64)
517 mode = u_modes[size];
519 ir_mode *base_mode = get_type_mode(base_tp);
520 unsigned modulo_shift = get_mode_modulo_shift(base_mode);
523 snprintf(name, sizeof(name), "bf_U%u", size);
524 mode = new_int_mode(name, irma_twos_complement, size, 0, modulo_shift);
525 u_modes[size] = mode;
528 type_dbg_info *dbgi = get_type_dbg_info_(type);
529 res = new_d_type_primitive(mode, dbgi);
530 set_primitive_base_type(res, base_tp);
535 static ir_type *create_bitfield_type(const entity_t *entity)
537 assert(entity->kind == ENTITY_COMPOUND_MEMBER);
538 type_t *base = skip_typeref(entity->declaration.type);
539 assert(is_type_integer(base));
540 ir_type *irbase = get_ir_type(base);
542 unsigned bit_size = entity->compound_member.bit_size;
544 if (is_type_signed(base)) {
545 return get_signed_int_type_for_bit_size(irbase, bit_size, base);
547 return get_unsigned_int_type_for_bit_size(irbase, bit_size, base);
552 * Construct firm type from ast struct type.
554 static ir_type *create_compound_type(compound_type_t *const type, bool const incomplete)
556 compound_t *compound = type->compound;
558 if (compound->irtype != NULL && (compound->irtype_complete || incomplete)) {
559 return compound->irtype;
562 bool const is_union = type->base.kind == TYPE_COMPOUND_UNION;
564 symbol_t *type_symbol = compound->base.symbol;
566 if (type_symbol != NULL) {
567 id = new_id_from_str(type_symbol->string);
570 id = id_unique("__anonymous_union.%u");
572 id = id_unique("__anonymous_struct.%u");
578 irtype = new_type_union(id);
580 irtype = new_type_struct(id);
583 compound->irtype_complete = false;
584 compound->irtype = irtype;
590 layout_union_type(type);
592 layout_struct_type(type);
595 compound->irtype_complete = true;
597 entity_t *entry = compound->members.entities;
598 for ( ; entry != NULL; entry = entry->base.next) {
599 if (entry->kind != ENTITY_COMPOUND_MEMBER)
602 symbol_t *symbol = entry->base.symbol;
603 type_t *entry_type = entry->declaration.type;
605 if (symbol == NULL) {
606 /* anonymous bitfield member, skip */
607 if (entry->compound_member.bitfield)
609 assert(is_type_compound(entry_type));
610 member_id = id_unique("anon.%u");
612 member_id = new_id_from_str(symbol->string);
615 dbg_info *dbgi = get_dbg_info(&entry->base.pos);
617 ir_type *entry_irtype;
618 if (entry->compound_member.bitfield) {
619 entry_irtype = create_bitfield_type(entry);
621 entry_irtype = get_ir_type(entry_type);
623 ir_entity *entity = new_d_entity(irtype, member_id, entry_irtype, dbgi);
625 set_entity_offset(entity, entry->compound_member.offset);
626 set_entity_offset_bits_remainder(entity,
627 entry->compound_member.bit_offset);
629 assert(entry->declaration.kind == DECLARATION_KIND_UNKNOWN);
630 entry->declaration.kind = DECLARATION_KIND_COMPOUND_MEMBER;
631 entry->compound_member.entity = entity;
634 set_type_alignment_bytes(irtype, compound->alignment);
635 set_type_size_bytes(irtype, compound->size);
636 set_type_state(irtype, layout_fixed);
641 void determine_enum_values(enum_type_t *const type)
643 ir_mode *const mode = atomic_modes[type->base.akind];
644 ir_tarval *const one = get_mode_one(mode);
645 ir_tarval * tv_next = get_mode_null(mode);
647 enum_t *enume = type->enume;
648 entity_t *entry = enume->base.next;
649 for (; entry != NULL; entry = entry->base.next) {
650 if (entry->kind != ENTITY_ENUM_VALUE)
653 expression_t *const init = entry->enum_value.value;
655 tv_next = fold_constant_to_tarval(init);
657 assert(entry->enum_value.tv == NULL || entry->enum_value.tv == tv_next);
658 entry->enum_value.tv = tv_next;
659 tv_next = tarval_add(tv_next, one);
663 static ir_type *create_enum_type(enum_type_t *const type)
665 return create_atomic_type(type->base.akind, (const type_t*) type);
668 static ir_type *get_ir_type_incomplete(type_t *type)
670 type = skip_typeref(type);
672 if (type->base.firm_type != NULL) {
673 return type->base.firm_type;
676 if (is_type_compound(type)) {
677 return create_compound_type(&type->compound, true);
679 return get_ir_type(type);
683 ir_type *get_ir_type(type_t *type)
685 type = skip_typeref(type);
687 if (type->base.firm_type != NULL) {
688 return type->base.firm_type;
691 ir_type *firm_type = NULL;
692 switch (type->kind) {
694 firm_type = create_atomic_type(type->atomic.akind, type);
697 firm_type = create_complex_type(type->atomic.akind, type);
700 firm_type = create_imaginary_type(&type->atomic);
703 firm_type = create_method_type(&type->function, false);
706 firm_type = create_pointer_type(&type->pointer);
709 firm_type = create_reference_type(&type->reference);
712 firm_type = create_array_type(&type->array);
714 case TYPE_COMPOUND_STRUCT:
715 case TYPE_COMPOUND_UNION:
716 firm_type = create_compound_type(&type->compound, false);
719 firm_type = create_enum_type(&type->enumt);
727 if (firm_type == NULL)
728 panic("unknown type found");
730 type->base.firm_type = firm_type;
734 static ir_mode *get_ir_mode_storage(type_t *type)
736 type = skip_typeref(type);
738 /* Firm doesn't report a mode for arrays and structs/unions. */
739 if (!is_type_scalar(type) || is_type_complex(type)) {
743 ir_type *const irtype = get_ir_type(type);
744 ir_mode *const mode = get_type_mode(irtype);
745 assert(mode != NULL);
749 static ir_mode *get_complex_mode_storage(type_t *type)
751 assert(is_type_complex(skip_typeref(type)));
752 ir_type *const irtype = get_ir_type(type);
753 ir_type *const etype = get_array_element_type(irtype);
754 ir_mode *const mode = get_type_mode(etype);
759 * get arithmetic mode for a type. This is different from get_ir_mode_storage,
760 * int that it returns bigger modes for floating point on some platforms
761 * (x87 internally does arithemtic with 80bits)
763 static ir_mode *get_ir_mode_arithmetic(type_t *type)
765 ir_mode *mode = get_ir_mode_storage(type);
766 if (mode_is_float(mode) && mode_float_arithmetic != NULL) {
767 return mode_float_arithmetic;
773 static ir_mode *get_complex_mode_arithmetic(type_t *type)
775 ir_mode *mode = get_complex_mode_storage(type);
776 if (mode_is_float(mode) && mode_float_arithmetic != NULL) {
777 return mode_float_arithmetic;
784 * Return a node representing the size of a type.
786 static ir_node *get_type_size_node(type_t *type)
788 ir_mode *const mode = get_ir_mode_storage(type_size_t);
789 type = skip_typeref(type);
791 if (is_type_array(type) && type->array.is_vla) {
792 ir_node *size_node = get_vla_size(&type->array);
793 ir_node *elem_size = get_type_size_node(type->array.element_type);
794 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
798 unsigned const size = get_type_size(type);
799 return new_Const_long(mode, size);
802 /** Names of the runtime functions. */
803 static const struct {
804 int id; /**< the rts id */
805 int n_res; /**< number of return values */
806 const char *name; /**< the name of the rts function */
807 int n_params; /**< number of parameters */
808 unsigned flags; /**< language flags */
810 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
811 { rts_abort, 0, "abort", 0, _C89 },
812 { rts_alloca, 1, "alloca", 1, _ALL },
813 { rts_abs, 1, "abs", 1, _C89 },
814 { rts_labs, 1, "labs", 1, _C89 },
815 { rts_llabs, 1, "llabs", 1, _C99 },
816 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
818 { rts_fabs, 1, "fabs", 1, _C89 },
819 { rts_sqrt, 1, "sqrt", 1, _C89 },
820 { rts_cbrt, 1, "cbrt", 1, _C99 },
821 { rts_exp, 1, "exp", 1, _C89 },
822 { rts_exp2, 1, "exp2", 1, _C89 },
823 { rts_exp10, 1, "exp10", 1, _GNUC },
824 { rts_log, 1, "log", 1, _C89 },
825 { rts_log2, 1, "log2", 1, _C89 },
826 { rts_log10, 1, "log10", 1, _C89 },
827 { rts_pow, 1, "pow", 2, _C89 },
828 { rts_sin, 1, "sin", 1, _C89 },
829 { rts_cos, 1, "cos", 1, _C89 },
830 { rts_tan, 1, "tan", 1, _C89 },
831 { rts_asin, 1, "asin", 1, _C89 },
832 { rts_acos, 1, "acos", 1, _C89 },
833 { rts_atan, 1, "atan", 1, _C89 },
834 { rts_sinh, 1, "sinh", 1, _C89 },
835 { rts_cosh, 1, "cosh", 1, _C89 },
836 { rts_tanh, 1, "tanh", 1, _C89 },
838 { rts_fabsf, 1, "fabsf", 1, _C99 },
839 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
840 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
841 { rts_expf, 1, "expf", 1, _C99 },
842 { rts_exp2f, 1, "exp2f", 1, _C99 },
843 { rts_exp10f, 1, "exp10f", 1, _GNUC },
844 { rts_logf, 1, "logf", 1, _C99 },
845 { rts_log2f, 1, "log2f", 1, _C99 },
846 { rts_log10f, 1, "log10f", 1, _C99 },
847 { rts_powf, 1, "powf", 2, _C99 },
848 { rts_sinf, 1, "sinf", 1, _C99 },
849 { rts_cosf, 1, "cosf", 1, _C99 },
850 { rts_tanf, 1, "tanf", 1, _C99 },
851 { rts_asinf, 1, "asinf", 1, _C99 },
852 { rts_acosf, 1, "acosf", 1, _C99 },
853 { rts_atanf, 1, "atanf", 1, _C99 },
854 { rts_sinhf, 1, "sinhf", 1, _C99 },
855 { rts_coshf, 1, "coshf", 1, _C99 },
856 { rts_tanhf, 1, "tanhf", 1, _C99 },
858 { rts_fabsl, 1, "fabsl", 1, _C99 },
859 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
860 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
861 { rts_expl, 1, "expl", 1, _C99 },
862 { rts_exp2l, 1, "exp2l", 1, _C99 },
863 { rts_exp10l, 1, "exp10l", 1, _GNUC },
864 { rts_logl, 1, "logl", 1, _C99 },
865 { rts_log2l, 1, "log2l", 1, _C99 },
866 { rts_log10l, 1, "log10l", 1, _C99 },
867 { rts_powl, 1, "powl", 2, _C99 },
868 { rts_sinl, 1, "sinl", 1, _C99 },
869 { rts_cosl, 1, "cosl", 1, _C99 },
870 { rts_tanl, 1, "tanl", 1, _C99 },
871 { rts_asinl, 1, "asinl", 1, _C99 },
872 { rts_acosl, 1, "acosl", 1, _C99 },
873 { rts_atanl, 1, "atanl", 1, _C99 },
874 { rts_sinhl, 1, "sinhl", 1, _C99 },
875 { rts_coshl, 1, "coshl", 1, _C99 },
876 { rts_tanhl, 1, "tanhl", 1, _C99 },
878 { rts_strcmp, 1, "strcmp", 2, _C89 },
879 { rts_strncmp, 1, "strncmp", 3, _C89 },
880 { rts_strcpy, 1, "strcpy", 2, _C89 },
881 { rts_strlen, 1, "strlen", 1, _C89 },
882 { rts_memcpy, 1, "memcpy", 3, _C89 },
883 { rts_mempcpy, 1, "mempcpy", 3, _GNUC },
884 { rts_memmove, 1, "memmove", 3, _C89 },
885 { rts_memset, 1, "memset", 3, _C89 },
886 { rts_memcmp, 1, "memcmp", 3, _C89 },
889 static ident *rts_idents[lengthof(rts_data)];
891 static create_ld_ident_func create_ld_ident = create_name_linux_elf;
893 void set_create_ld_ident(ident *(*func)(entity_t*))
895 create_ld_ident = func;
898 static bool declaration_is_definition(const entity_t *entity)
900 switch (entity->kind) {
901 case ENTITY_VARIABLE:
902 return entity->declaration.storage_class != STORAGE_CLASS_EXTERN;
903 case ENTITY_FUNCTION:
904 return entity->function.body != NULL;
905 case ENTITY_PARAMETER:
906 case ENTITY_COMPOUND_MEMBER:
910 case ENTITY_ENUM_VALUE:
911 case ENTITY_NAMESPACE:
913 case ENTITY_LOCAL_LABEL:
916 panic("entity is not a declaration");
920 * Handle GNU attributes for entities
922 * @param ent the entity
923 * @param decl the routine declaration
925 static void handle_decl_modifiers(ir_entity *irentity, entity_t *entity)
927 assert(is_declaration(entity));
928 decl_modifiers_t modifiers = entity->declaration.modifiers;
930 if (is_method_entity(irentity)) {
931 if (modifiers & DM_PURE)
932 add_entity_additional_properties(irentity, mtp_property_pure);
933 if (modifiers & DM_CONST)
934 add_entity_additional_properties(irentity, mtp_property_const);
935 if (modifiers & DM_NOINLINE)
936 add_entity_additional_properties(irentity, mtp_property_noinline);
937 if (modifiers & DM_FORCEINLINE)
938 add_entity_additional_properties(irentity, mtp_property_always_inline);
939 if (modifiers & DM_NAKED)
940 add_entity_additional_properties(irentity, mtp_property_naked);
941 if (entity->kind == ENTITY_FUNCTION && entity->function.is_inline)
942 add_entity_additional_properties(irentity,
943 mtp_property_inline_recommended);
945 if ((modifiers & DM_USED) && declaration_is_definition(entity)) {
946 add_entity_linkage(irentity, IR_LINKAGE_HIDDEN_USER);
948 if ((modifiers & DM_WEAK) && declaration_is_definition(entity)
949 && entity->declaration.storage_class != STORAGE_CLASS_EXTERN) {
950 add_entity_linkage(irentity, IR_LINKAGE_WEAK);
954 static bool is_main(entity_t *entity)
956 static symbol_t *sym_main = NULL;
957 if (sym_main == NULL) {
958 sym_main = symbol_table_insert("main");
961 if (entity->base.symbol != sym_main)
963 /* must be in outermost scope */
964 if (entity->base.parent_scope != ¤t_translation_unit->scope)
971 * Creates an entity representing a function.
973 * @param entity the function declaration/definition
974 * @param owner_type the owner type of this function, NULL
975 * for global functions
977 static ir_entity *get_function_entity(entity_t *entity, ir_type *owner_type)
979 assert(entity->kind == ENTITY_FUNCTION);
980 if (entity->function.irentity != NULL)
981 return entity->function.irentity;
983 switch (entity->function.btk) {
986 case BUILTIN_LIBC_CHECK:
992 symbol_t *symbol = entity->base.symbol;
993 ident *id = new_id_from_str(symbol->string);
995 /* already an entity defined? */
996 ir_entity *irentity = entitymap_get(&entitymap, symbol);
997 bool const has_body = entity->function.body != NULL;
998 if (irentity != NULL) {
1002 ir_type *ir_type_method;
1003 if (entity->function.need_closure)
1004 ir_type_method = create_method_type(&entity->declaration.type->function, true);
1006 ir_type_method = get_ir_type(entity->declaration.type);
1008 bool nested_function = false;
1009 if (owner_type == NULL)
1010 owner_type = get_glob_type();
1012 nested_function = true;
1014 dbg_info *const dbgi = get_dbg_info(&entity->base.pos);
1015 irentity = new_d_entity(owner_type, id, ir_type_method, dbgi);
1018 if (nested_function)
1019 ld_id = id_unique("inner.%u");
1021 ld_id = create_ld_ident(entity);
1022 set_entity_ld_ident(irentity, ld_id);
1024 handle_decl_modifiers(irentity, entity);
1026 if (! nested_function) {
1027 storage_class_tag_t const storage_class
1028 = (storage_class_tag_t) entity->declaration.storage_class;
1029 if (storage_class == STORAGE_CLASS_STATIC) {
1030 set_entity_visibility(irentity, ir_visibility_local);
1032 set_entity_visibility(irentity, ir_visibility_external);
1035 bool const is_inline = entity->function.is_inline;
1036 if (is_inline && has_body) {
1037 if (((c_mode & _C99) && storage_class == STORAGE_CLASS_NONE)
1038 || ((c_mode & _C99) == 0
1039 && storage_class == STORAGE_CLASS_EXTERN)) {
1040 add_entity_linkage(irentity, IR_LINKAGE_NO_CODEGEN);
1044 /* nested functions are always local */
1045 set_entity_visibility(irentity, ir_visibility_local);
1048 /* We should check for file scope here, but as long as we compile C only
1049 this is not needed. */
1050 if (!freestanding && !has_body) {
1051 /* check for a known runtime function */
1052 for (size_t i = 0; i < lengthof(rts_data); ++i) {
1053 if (id != rts_idents[i])
1056 function_type_t *function_type
1057 = &entity->declaration.type->function;
1058 /* rts_entities code can't handle a "wrong" number of parameters */
1059 if (function_type->unspecified_parameters)
1062 /* check number of parameters */
1063 int n_params = count_parameters(function_type);
1064 if (n_params != rts_data[i].n_params)
1067 type_t *return_type = skip_typeref(function_type->return_type);
1068 int n_res = is_type_void(return_type) ? 0 : 1;
1069 if (n_res != rts_data[i].n_res)
1072 /* ignore those rts functions not necessary needed for current mode */
1073 if ((c_mode & rts_data[i].flags) == 0)
1075 assert(rts_entities[rts_data[i].id] == NULL);
1076 rts_entities[rts_data[i].id] = irentity;
1080 entitymap_insert(&entitymap, symbol, irentity);
1083 entity->declaration.kind = DECLARATION_KIND_FUNCTION;
1084 entity->function.irentity = irentity;
1090 * Creates a SymConst for a given entity.
1092 * @param dbgi debug info
1093 * @param entity the entity
1095 static ir_node *create_symconst(dbg_info *dbgi, ir_entity *entity)
1097 assert(entity != NULL);
1098 union symconst_symbol sym;
1099 sym.entity_p = entity;
1100 return new_d_SymConst(dbgi, mode_P, sym, symconst_addr_ent);
1103 static ir_node *create_Const_from_bool(ir_mode *const mode, bool const v)
1105 return new_Const((v ? get_mode_one : get_mode_null)(mode));
1108 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1110 ir_mode *value_mode = get_irn_mode(value);
1112 if (value_mode == dest_mode)
1115 return new_d_Conv(dbgi, value, dest_mode);
1118 static ir_node *conv_to_storage_type(dbg_info *const dbgi, ir_node *const val, type_t *const type)
1120 ir_mode *const mode = get_ir_mode_storage(type);
1121 return create_conv(dbgi, val, mode);
1125 * Creates a SymConst node representing a string constant.
1127 * @param src_pos the source position of the string constant
1128 * @param id_prefix a prefix for the name of the generated string constant
1129 * @param value the value of the string constant
1131 static ir_node *string_to_firm(position_t const *const src_pos, char const *const id_prefix, string_t const *const value)
1133 size_t const slen = get_string_len(value) + 1;
1134 ir_initializer_t *const initializer = create_initializer_compound(slen);
1135 ir_type * elem_type;
1136 switch (value->encoding) {
1137 case STRING_ENCODING_CHAR:
1138 case STRING_ENCODING_UTF8: {
1139 elem_type = ir_type_char;
1141 ir_mode *const mode = get_type_mode(elem_type);
1142 char const *p = value->begin;
1143 for (size_t i = 0; i < slen; ++i) {
1144 ir_tarval *tv = new_tarval_from_long(*p++, mode);
1145 ir_initializer_t *val = create_initializer_tarval(tv);
1146 set_initializer_compound_value(initializer, i, val);
1153 case STRING_ENCODING_CHAR16: type = type_char16_t; goto init_wide;
1154 case STRING_ENCODING_CHAR32: type = type_char32_t; goto init_wide;
1155 case STRING_ENCODING_WIDE: type = type_wchar_t; goto init_wide;
1157 elem_type = get_ir_type(type);
1159 ir_mode *const mode = get_type_mode(elem_type);
1160 char const *p = value->begin;
1161 for (size_t i = 0; i < slen; ++i) {
1162 assert(p <= value->begin + value->size);
1163 utf32 v = read_utf8_char(&p);
1164 ir_tarval *tv = new_tarval_from_long(v, mode);
1165 ir_initializer_t *val = create_initializer_tarval(tv);
1166 set_initializer_compound_value(initializer, i, val);
1171 panic("invalid string encoding");
1174 ir_type *const type = new_type_array(1, elem_type);
1175 set_array_bounds_int(type, 0, 0, slen);
1176 set_type_size_bytes( type, slen * get_type_size_bytes(elem_type));
1177 set_type_state( type, layout_fixed);
1179 ir_type *const global_type = get_glob_type();
1180 ident *const id = id_unique(id_prefix);
1181 dbg_info *const dbgi = get_dbg_info(src_pos);
1182 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1183 set_entity_ld_ident( entity, id);
1184 set_entity_visibility( entity, ir_visibility_private);
1185 add_entity_linkage( entity, IR_LINKAGE_CONSTANT);
1186 set_entity_initializer(entity, initializer);
1188 return create_symconst(dbgi, entity);
1191 static bool try_create_integer(literal_expression_t *literal, type_t *type)
1193 assert(type->kind == TYPE_ATOMIC || type->kind == TYPE_COMPLEX);
1194 atomic_type_kind_t akind = type->atomic.akind;
1196 ir_mode *const mode = atomic_modes[akind];
1197 char const *const str = literal->value.begin;
1198 ir_tarval *const tv = new_tarval_from_str(str, literal->suffix - str, mode);
1199 if (tv == tarval_bad)
1202 literal->base.type = type;
1203 literal->target_value = tv;
1207 void determine_literal_type(literal_expression_t *const literal)
1209 assert(literal->base.kind == EXPR_LITERAL_INTEGER);
1211 /* -1: signed only, 0: any, 1: unsigned only */
1213 !is_type_signed(literal->base.type) ? 1 :
1214 literal->value.begin[0] == '0' ? 0 :
1215 -1; /* Decimal literals only try signed types. */
1217 tarval_int_overflow_mode_t old_mode = tarval_get_integer_overflow_mode();
1218 tarval_set_integer_overflow_mode(TV_OVERFLOW_BAD);
1220 if (try_create_integer(literal, literal->base.type))
1223 /* now try if the constant is small enough for some types */
1224 if (sign >= 0 && try_create_integer(literal, type_unsigned_int))
1226 if (sign <= 0 && try_create_integer(literal, type_long))
1228 if (sign >= 0 && try_create_integer(literal, type_unsigned_long))
1230 /* last try? then we should not report tarval_bad */
1232 tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP);
1233 if (sign <= 0 && try_create_integer(literal, type_long_long))
1238 tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP);
1239 bool res = try_create_integer(literal, type_unsigned_long_long);
1241 panic("internal error when parsing number literal");
1244 tarval_set_integer_overflow_mode(old_mode);
1248 * Creates a Const node representing a constant.
1250 static ir_node *literal_to_firm_(const literal_expression_t *literal,
1253 const char *string = literal->value.begin;
1254 size_t size = literal->value.size;
1257 switch (literal->base.kind) {
1258 case EXPR_LITERAL_INTEGER:
1259 assert(literal->target_value != NULL);
1260 tv = literal->target_value;
1263 case EXPR_LITERAL_FLOATINGPOINT:
1264 tv = new_tarval_from_str(string, size, mode);
1267 case EXPR_LITERAL_BOOLEAN:
1268 if (string[0] == 't') {
1269 tv = get_mode_one(mode);
1271 assert(string[0] == 'f');
1272 case EXPR_LITERAL_MS_NOOP:
1273 tv = get_mode_null(mode);
1278 panic("invalid literal kind");
1281 dbg_info *const dbgi = get_dbg_info(&literal->base.pos);
1282 return new_d_Const(dbgi, tv);
1285 static ir_node *literal_to_firm(const literal_expression_t *literal)
1287 type_t *type = skip_typeref(literal->base.type);
1288 ir_mode *mode_storage = get_ir_mode_storage(type);
1289 return literal_to_firm_(literal, mode_storage);
1293 * Creates a Const node representing a character constant.
1295 static ir_node *char_literal_to_firm(string_literal_expression_t const *literal)
1297 type_t *type = skip_typeref(literal->base.type);
1298 ir_mode *mode = get_ir_mode_storage(type);
1299 const char *string = literal->value.begin;
1300 size_t size = literal->value.size;
1303 switch (literal->value.encoding) {
1304 case STRING_ENCODING_WIDE: {
1305 utf32 v = read_utf8_char(&string);
1307 size_t len = snprintf(buf, sizeof(buf), UTF32_PRINTF_FORMAT, v);
1309 tv = new_tarval_from_str(buf, len, mode);
1313 case STRING_ENCODING_CHAR: {
1316 = get_atomic_type_flags(ATOMIC_TYPE_CHAR) & ATOMIC_TYPE_FLAG_SIGNED;
1317 if (size == 1 && char_is_signed) {
1318 v = (signed char)string[0];
1321 for (size_t i = 0; i < size; ++i) {
1322 v = (v << 8) | ((unsigned char)string[i]);
1326 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1328 tv = new_tarval_from_str(buf, len, mode);
1333 panic("invalid literal kind");
1336 dbg_info *const dbgi = get_dbg_info(&literal->base.pos);
1337 return new_d_Const(dbgi, tv);
1341 * Allocate an area of size bytes aligned at alignment
1344 static ir_entity *alloc_trampoline(ir_type *frame_type, int size, unsigned alignment)
1346 static unsigned area_cnt = 0;
1349 ir_type *tp = new_type_array(1, ir_type_char);
1350 set_array_bounds_int(tp, 0, 0, size);
1351 set_type_alignment_bytes(tp, alignment);
1353 snprintf(buf, sizeof(buf), "trampolin%u", area_cnt++);
1354 ident *name = new_id_from_str(buf);
1355 ir_entity *area = new_entity(frame_type, name, tp);
1357 /* mark this entity as compiler generated */
1358 set_entity_compiler_generated(area, 1);
1363 * Return a node representing a trampoline region
1364 * for a given function entity.
1366 * @param dbgi debug info
1367 * @param entity the function entity
1369 static ir_node *get_trampoline_region(dbg_info *dbgi, ir_entity *entity)
1371 ir_entity *region = NULL;
1374 if (current_trampolines != NULL) {
1375 for (i = ARR_LEN(current_trampolines) - 1; i >= 0; --i) {
1376 if (current_trampolines[i].function == entity) {
1377 region = current_trampolines[i].region;
1382 current_trampolines = NEW_ARR_F(trampoline_region, 0);
1384 ir_graph *irg = current_ir_graph;
1385 if (region == NULL) {
1386 /* create a new region */
1387 ir_type *frame_tp = get_irg_frame_type(irg);
1388 trampoline_region reg;
1389 reg.function = entity;
1391 reg.region = alloc_trampoline(frame_tp,
1392 be_params->trampoline_size,
1393 be_params->trampoline_align);
1394 ARR_APP1(trampoline_region, current_trampolines, reg);
1395 region = reg.region;
1397 return new_d_simpleSel(dbgi, get_irg_no_mem(irg), get_irg_frame(irg),
1402 * Creates a trampoline for a function represented by an entity.
1404 * @param dbgi debug info
1405 * @param mode the (reference) mode for the function address
1406 * @param entity the function entity
1408 static ir_node *create_trampoline(dbg_info *dbgi, ir_mode *mode,
1411 assert(entity != NULL);
1413 in[0] = get_trampoline_region(dbgi, entity);
1414 in[1] = create_symconst(dbgi, entity);
1415 in[2] = get_irg_frame(current_ir_graph);
1417 ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_inner_trampoline, get_unknown_type());
1418 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1419 return new_Proj(irn, mode, pn_Builtin_max+1);
1423 * Dereference an address.
1425 * @param dbgi debug info
1426 * @param type the type of the dereferenced result (the points_to type)
1427 * @param addr the address to dereference
1429 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1430 ir_node *const addr)
1432 type_t *skipped = skip_typeref(type);
1433 if (is_type_incomplete(skipped))
1436 ir_type *irtype = get_ir_type(skipped);
1437 if (is_compound_type(irtype)
1438 || is_Method_type(irtype)
1439 || is_Array_type(irtype)) {
1443 ir_cons_flags flags = skipped->base.qualifiers & TYPE_QUALIFIER_VOLATILE
1444 ? cons_volatile : cons_none;
1445 ir_mode *const mode = get_type_mode(irtype);
1446 ir_node *const memory = get_store();
1447 ir_node *const load = new_d_Load(dbgi, memory, addr, mode, flags);
1448 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1449 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1451 set_store(load_mem);
1456 * Returns the correct base address depending on whether it is a parameter or a
1457 * normal local variable.
1459 static ir_node *get_local_frame(ir_entity *const ent)
1461 ir_graph *const irg = current_ir_graph;
1462 const ir_type *const owner = get_entity_owner(ent);
1463 if (owner == current_outer_frame) {
1464 assert(current_static_link != NULL);
1465 return current_static_link;
1467 return get_irg_frame(irg);
1472 * Keep the current block and memory.
1473 * This is necessary for all loops, because they could become infinite.
1475 static void keep_loop(void)
1477 keep_alive(get_cur_block());
1478 keep_alive(get_store());
1481 static ir_node *enum_constant_to_firm(reference_expression_t const *const ref)
1483 entity_t *entity = ref->entity;
1484 if (entity->enum_value.tv == NULL) {
1485 type_t *type = skip_typeref(entity->enum_value.enum_type);
1486 assert(type->kind == TYPE_ENUM);
1487 determine_enum_values(&type->enumt);
1490 return new_Const(entity->enum_value.tv);
1493 static ir_node *reference_addr(const reference_expression_t *ref)
1495 dbg_info *dbgi = get_dbg_info(&ref->base.pos);
1496 entity_t *entity = ref->entity;
1497 assert(is_declaration(entity));
1499 if (entity->kind == ENTITY_FUNCTION
1500 && entity->function.btk != BUILTIN_NONE) {
1501 ir_entity *irentity = get_function_entity(entity, NULL);
1502 /* for gcc compatibility we have to produce (dummy) addresses for some
1503 * builtins which don't have entities */
1504 if (irentity == NULL) {
1505 position_t const *const pos = &ref->base.pos;
1506 warningf(WARN_OTHER, pos, "taking address of builtin '%N'", ref->entity);
1508 /* simply create a NULL pointer */
1509 ir_mode *const mode = get_ir_mode_storage(type_void_ptr);
1510 return new_Const(get_mode_null(mode));
1514 switch ((declaration_kind_t) entity->declaration.kind) {
1515 case DECLARATION_KIND_UNKNOWN:
1517 case DECLARATION_KIND_PARAMETER:
1518 case DECLARATION_KIND_LOCAL_VARIABLE:
1519 /* you can store to a local variable (so we don't panic but return NULL
1520 * as an indicator for no real address) */
1522 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1523 ir_node *const addr = create_symconst(dbgi, entity->variable.v.entity);
1527 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
1528 case DECLARATION_KIND_PARAMETER_ENTITY: {
1529 ir_entity *irentity = entity->variable.v.entity;
1530 ir_node *frame = get_local_frame(irentity);
1531 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1535 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1536 return entity->variable.v.vla_base;
1538 case DECLARATION_KIND_FUNCTION: {
1539 return create_symconst(dbgi, entity->function.irentity);
1542 case DECLARATION_KIND_INNER_FUNCTION: {
1543 type_t *const type = skip_typeref(entity->declaration.type);
1544 ir_mode *const mode = get_ir_mode_storage(type);
1545 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1546 /* inner function not using the closure */
1547 return create_symconst(dbgi, entity->function.irentity);
1549 /* need trampoline here */
1550 return create_trampoline(dbgi, mode, entity->function.irentity);
1554 case DECLARATION_KIND_COMPOUND_MEMBER:
1555 panic("not implemented reference type");
1558 panic("reference to declaration with unknown type");
1561 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1563 dbg_info *const dbgi = get_dbg_info(&ref->base.pos);
1564 entity_t *const entity = ref->entity;
1565 assert(is_declaration(entity));
1567 switch ((declaration_kind_t)entity->declaration.kind) {
1568 case DECLARATION_KIND_LOCAL_VARIABLE:
1569 case DECLARATION_KIND_PARAMETER: {
1570 type_t *const type = skip_typeref(entity->declaration.type);
1571 ir_mode *const mode = get_ir_mode_storage(type);
1572 return get_value(entity->variable.v.value_number, mode);
1576 ir_node *const addr = reference_addr(ref);
1577 return deref_address(dbgi, entity->declaration.type, addr);
1583 * Transform calls to builtin functions.
1585 static ir_node *process_builtin_call(const call_expression_t *call)
1587 dbg_info *dbgi = get_dbg_info(&call->base.pos);
1589 assert(call->function->kind == EXPR_REFERENCE);
1590 reference_expression_t *builtin = &call->function->reference;
1592 type_t *expr_type = skip_typeref(builtin->base.type);
1593 assert(is_type_pointer(expr_type));
1595 type_t *function_type = skip_typeref(expr_type->pointer.points_to);
1597 switch (builtin->entity->function.btk) {
1600 case BUILTIN_ALLOCA: {
1601 expression_t *argument = call->arguments->expression;
1602 ir_node *size = expression_to_value(argument);
1604 ir_node *store = get_store();
1605 ir_node *alloca = new_d_Alloc(dbgi, store, size, get_unknown_type(),
1607 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1609 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1614 type_t *type = function_type->function.return_type;
1615 ir_mode *mode = get_ir_mode_storage(type);
1616 ir_tarval *tv = get_mode_infinite(mode);
1617 ir_node *res = new_d_Const(dbgi, tv);
1621 /* Ignore string for now... */
1622 assert(is_type_function(function_type));
1623 type_t *type = function_type->function.return_type;
1624 ir_mode *mode = get_ir_mode_storage(type);
1625 ir_tarval *tv = get_mode_NAN(mode);
1626 ir_node *res = new_d_Const(dbgi, tv);
1629 case BUILTIN_EXPECT: {
1630 expression_t *argument = call->arguments->expression;
1631 return expression_to_value(argument);
1633 case BUILTIN_VA_END:
1634 /* evaluate the argument of va_end for its side effects */
1635 expression_to_value(call->arguments->expression);
1637 case BUILTIN_OBJECT_SIZE: {
1638 /* determine value of "type" */
1639 expression_t *type_expression = call->arguments->next->expression;
1640 long type_val = fold_constant_to_int(type_expression);
1641 type_t *type = function_type->function.return_type;
1642 ir_mode *mode = get_ir_mode_storage(type);
1643 /* just produce a "I don't know" result */
1644 ir_tarval *result = type_val & 2 ? get_mode_null(mode) :
1645 get_mode_minus_one(mode);
1647 return new_d_Const(dbgi, result);
1649 case BUILTIN_ROTL: {
1650 ir_node *val = expression_to_value(call->arguments->expression);
1651 ir_node *shf = expression_to_value(call->arguments->next->expression);
1652 ir_mode *mode = get_irn_mode(val);
1653 ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
1654 return new_d_Rotl(dbgi, val, create_conv(dbgi, shf, mode_uint), mode);
1656 case BUILTIN_ROTR: {
1657 ir_node *val = expression_to_value(call->arguments->expression);
1658 ir_node *shf = expression_to_value(call->arguments->next->expression);
1659 ir_mode *mode = get_irn_mode(val);
1660 ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
1661 ir_node *c = new_Const_long(mode_uint, get_mode_size_bits(mode));
1662 ir_node *sub = new_d_Sub(dbgi, c, create_conv(dbgi, shf, mode_uint), mode_uint);
1663 return new_d_Rotl(dbgi, val, sub, mode);
1668 case BUILTIN_LIBC_CHECK:
1669 panic("builtin did not produce an entity");
1671 panic("invalid builtin");
1674 static ir_node *complex_to_memory(dbg_info *dbgi, type_t *type,
1675 complex_value value);
1678 * Transform a call expression.
1679 * Handles some special cases, like alloca() calls, which must be resolved
1680 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1681 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1684 static ir_node *call_expression_to_firm(const call_expression_t *const call)
1686 dbg_info *const dbgi = get_dbg_info(&call->base.pos);
1687 assert(currently_reachable());
1689 expression_t *function = call->function;
1690 ir_node *callee = NULL;
1691 bool firm_builtin = false;
1692 ir_builtin_kind firm_builtin_kind = ir_bk_trap;
1693 if (function->kind == EXPR_REFERENCE) {
1694 const reference_expression_t *ref = &function->reference;
1695 entity_t *entity = ref->entity;
1697 if (entity->kind == ENTITY_FUNCTION) {
1698 builtin_kind_t builtin = entity->function.btk;
1699 if (builtin == BUILTIN_FIRM) {
1700 firm_builtin = true;
1701 firm_builtin_kind = entity->function.b.firm_builtin_kind;
1702 } else if (builtin != BUILTIN_NONE && builtin != BUILTIN_LIBC
1703 && builtin != BUILTIN_LIBC_CHECK) {
1704 return process_builtin_call(call);
1709 callee = expression_to_value(function);
1711 type_t *type = skip_typeref(function->base.type);
1712 assert(is_type_pointer(type));
1713 pointer_type_t *pointer_type = &type->pointer;
1714 type_t *points_to = skip_typeref(pointer_type->points_to);
1715 assert(is_type_function(points_to));
1716 function_type_t *function_type = &points_to->function;
1718 int n_parameters = 0;
1719 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1720 ir_type *new_method_type = NULL;
1721 if (function_type->variadic || function_type->unspecified_parameters) {
1722 const call_argument_t *argument = call->arguments;
1723 for ( ; argument != NULL; argument = argument->next) {
1727 /* we need to construct a new method type matching the call
1729 type_dbg_info *tdbgi = get_type_dbg_info_((const type_t*) function_type);
1730 int n_res = get_method_n_ress(ir_method_type);
1731 new_method_type = new_d_type_method(n_parameters, n_res, tdbgi);
1732 set_method_calling_convention(new_method_type,
1733 get_method_calling_convention(ir_method_type));
1734 set_method_additional_properties(new_method_type,
1735 get_method_additional_properties(ir_method_type));
1736 set_method_variadicity(new_method_type,
1737 get_method_variadicity(ir_method_type));
1739 for (int i = 0; i < n_res; ++i) {
1740 set_method_res_type(new_method_type, i,
1741 get_method_res_type(ir_method_type, i));
1743 argument = call->arguments;
1744 for (int i = 0; i < n_parameters; ++i, argument = argument->next) {
1745 expression_t *expression = argument->expression;
1746 ir_type *irtype = get_ir_type(expression->base.type);
1747 set_method_param_type(new_method_type, i, irtype);
1749 ir_method_type = new_method_type;
1751 n_parameters = get_method_n_params(ir_method_type);
1754 ir_node *in[n_parameters];
1756 const call_argument_t *argument = call->arguments;
1757 for (int n = 0; n < n_parameters; ++n) {
1758 expression_t *expression = argument->expression;
1759 type_t *const arg_type = skip_typeref(expression->base.type);
1760 if (is_type_complex(arg_type)) {
1761 complex_value value = expression_to_complex(expression);
1762 in[n] = complex_to_memory(dbgi, arg_type, value);
1764 in[n] = conv_to_storage_type(dbgi, expression_to_value(expression), arg_type);
1767 argument = argument->next;
1771 if (function_type->modifiers & DM_CONST) {
1772 store = get_irg_no_mem(current_ir_graph);
1774 store = get_store();
1778 type_t *return_type = skip_typeref(function_type->return_type);
1779 ir_node *result = NULL;
1781 node = new_d_Builtin(dbgi, store, n_parameters, in, firm_builtin_kind,
1783 if (! (function_type->modifiers & DM_CONST)) {
1784 ir_node *mem = new_Proj(node, mode_M, pn_Builtin_M);
1788 if (!is_type_void(return_type)) {
1789 assert(is_type_scalar(return_type));
1790 ir_mode *mode = get_ir_mode_storage(return_type);
1791 result = new_Proj(node, mode, pn_Builtin_max+1);
1794 node = new_d_Call(dbgi, store, callee, n_parameters, in, ir_method_type);
1795 if (! (function_type->modifiers & DM_CONST)) {
1796 ir_node *mem = new_Proj(node, mode_M, pn_Call_M);
1800 if (!is_type_void(return_type)) {
1801 ir_node *const resproj = new_Proj(node, mode_T, pn_Call_T_result);
1802 ir_mode *const mode = get_ir_mode_storage(return_type);
1803 result = new_Proj(resproj, mode, 0);
1807 if (function_type->modifiers & DM_NORETURN) {
1808 /* A dead end: Keep the Call and the Block. Also place all further
1809 * nodes into a new and unreachable block. */
1811 keep_alive(get_cur_block());
1812 ir_node *block = new_Block(0, NULL);
1813 set_cur_block(block);
1819 static ir_node *statement_to_firm(statement_t *statement);
1820 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1821 static ir_node *expression_to_addr(const expression_t *expression);
1823 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1826 value = conv_to_storage_type(dbgi, value, type);
1828 ir_node *memory = get_store();
1830 if (is_type_scalar(type) && !is_type_complex(type)) {
1831 ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
1832 ? cons_volatile : cons_none;
1833 ir_node *store = new_d_Store(dbgi, memory, addr, value, flags);
1834 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1835 set_store(store_mem);
1837 ir_type *irtype = get_ir_type(type);
1838 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1839 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
1840 set_store(copyb_mem);
1844 static ir_tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1846 ir_tarval *all_one = get_mode_all_one(mode);
1847 int mode_size = get_mode_size_bits(mode);
1848 ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
1850 assert(offset >= 0);
1852 assert(offset + size <= mode_size);
1853 if (size == mode_size) {
1857 long shiftr = get_mode_size_bits(mode) - size;
1858 long shiftl = offset;
1859 ir_tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1860 ir_tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1861 ir_tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1862 ir_tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1867 static ir_node *bitfield_store_to_firm(dbg_info *dbgi,
1868 ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile,
1871 ir_type *entity_type = get_entity_type(entity);
1872 ir_type *base_type = get_primitive_base_type(entity_type);
1873 ir_mode *mode = get_type_mode(base_type);
1874 ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
1876 value = create_conv(dbgi, value, mode);
1878 /* kill upper bits of value and shift to right position */
1879 unsigned bitoffset = get_entity_offset_bits_remainder(entity);
1880 unsigned bitsize = get_mode_size_bits(get_type_mode(entity_type));
1881 unsigned base_bits = get_mode_size_bits(mode);
1882 unsigned shiftwidth = base_bits - bitsize;
1884 ir_node *shiftcount = new_Const_long(mode_uint, shiftwidth);
1885 ir_node *shiftl = new_d_Shl(dbgi, value, shiftcount, mode);
1887 unsigned shrwidth = base_bits - bitsize - bitoffset;
1888 ir_node *shrconst = new_Const_long(mode_uint, shrwidth);
1889 ir_node *shiftr = new_d_Shr(dbgi, shiftl, shrconst, mode);
1891 /* load current value */
1892 ir_node *mem = get_store();
1893 ir_node *load = new_d_Load(dbgi, mem, addr, mode,
1894 set_volatile ? cons_volatile : cons_none);
1895 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1896 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1897 ir_tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1898 ir_tarval *inv_mask = tarval_not(shift_mask);
1899 ir_node *inv_mask_node = new_d_Const(dbgi, inv_mask);
1900 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1902 /* construct new value and store */
1903 ir_node *new_val = new_d_Or(dbgi, load_res_masked, shiftr, mode);
1904 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val,
1905 set_volatile ? cons_volatile : cons_none);
1906 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1907 set_store(store_mem);
1913 ir_node *count_res_shr = new_Const_long(mode_uint, base_bits - bitsize);
1914 if (mode_is_signed(mode)) {
1915 res_shr = new_d_Shrs(dbgi, shiftl, count_res_shr, mode);
1917 res_shr = new_d_Shr(dbgi, shiftl, count_res_shr, mode);
1922 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
1925 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
1926 entity_t *entity = expression->compound_entry;
1927 type_t *base_type = entity->declaration.type;
1928 ir_mode *mode = get_ir_mode_storage(base_type);
1929 ir_node *mem = get_store();
1930 ir_node *load = new_d_Load(dbgi, mem, addr, mode, cons_none);
1931 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1932 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1933 ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
1935 ir_mode *amode = mode;
1936 /* optimisation, since shifting in modes < machine_size is usually
1938 if (get_mode_size_bits(amode) < get_mode_size_bits(mode_uint)) {
1941 unsigned amode_size = get_mode_size_bits(amode);
1942 load_res = create_conv(dbgi, load_res, amode);
1944 set_store(load_mem);
1946 /* kill upper bits */
1947 assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER);
1948 unsigned bitoffset = entity->compound_member.bit_offset;
1949 unsigned bitsize = entity->compound_member.bit_size;
1950 unsigned shift_bitsl = amode_size - bitoffset - bitsize;
1951 ir_tarval *tvl = new_tarval_from_long((long)shift_bitsl, mode_uint);
1952 ir_node *countl = new_d_Const(dbgi, tvl);
1953 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, amode);
1955 unsigned shift_bitsr = bitoffset + shift_bitsl;
1956 assert(shift_bitsr <= amode_size);
1957 ir_tarval *tvr = new_tarval_from_long((long)shift_bitsr, mode_uint);
1958 ir_node *countr = new_d_Const(dbgi, tvr);
1960 if (mode_is_signed(mode)) {
1961 shiftr = new_d_Shrs(dbgi, shiftl, countr, amode);
1963 shiftr = new_d_Shr(dbgi, shiftl, countr, amode);
1966 return conv_to_storage_type(dbgi, shiftr, expression->base.type);
1969 /* make sure the selected compound type is constructed */
1970 static void construct_select_compound(const select_expression_t *expression)
1972 type_t *type = skip_typeref(expression->compound->base.type);
1973 if (is_type_pointer(type)) {
1974 type = type->pointer.points_to;
1976 (void) get_ir_type(type);
1979 static ir_node *set_value_for_expression_addr(const expression_t *expression,
1980 ir_node *value, ir_node *addr)
1982 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
1983 type_t *type = skip_typeref(expression->base.type);
1984 value = conv_to_storage_type(dbgi, value, type);
1986 if (expression->kind == EXPR_REFERENCE) {
1987 const reference_expression_t *ref = &expression->reference;
1989 entity_t *entity = ref->entity;
1990 assert(is_declaration(entity));
1991 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
1992 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE ||
1993 entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
1994 set_value(entity->variable.v.value_number, value);
2000 addr = expression_to_addr(expression);
2001 assert(addr != NULL);
2003 if (expression->kind == EXPR_SELECT) {
2004 const select_expression_t *select = &expression->select;
2006 construct_select_compound(select);
2008 entity_t *entity = select->compound_entry;
2009 assert(entity->kind == ENTITY_COMPOUND_MEMBER);
2010 if (entity->compound_member.bitfield) {
2011 ir_entity *irentity = entity->compound_member.entity;
2013 = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
2014 value = bitfield_store_to_firm(dbgi, irentity, addr, value,
2015 set_volatile, true);
2020 assign_value(dbgi, addr, type, value);
2024 static ir_node *get_value_from_lvalue(const expression_t *expression,
2027 if (expression->kind == EXPR_REFERENCE) {
2028 const reference_expression_t *ref = &expression->reference;
2030 entity_t *entity = ref->entity;
2031 assert(entity->kind == ENTITY_VARIABLE
2032 || entity->kind == ENTITY_PARAMETER);
2033 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2035 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE ||
2036 entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2037 value_number = entity->variable.v.value_number;
2038 assert(addr == NULL);
2039 type_t *type = skip_typeref(expression->base.type);
2040 ir_mode *mode = get_ir_mode_storage(type);
2041 return get_value(value_number, mode);
2045 assert(addr != NULL);
2046 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
2049 if (expression->kind == EXPR_SELECT &&
2050 expression->select.compound_entry->compound_member.bitfield) {
2051 construct_select_compound(&expression->select);
2052 value = bitfield_extract_to_firm(&expression->select, addr);
2054 value = deref_address(dbgi, expression->base.type, addr);
2060 static ir_node *incdec_to_firm(unary_expression_t const *const expr, bool const inc, bool const pre)
2062 type_t *const type = skip_typeref(expr->base.type);
2063 ir_mode *const mode = get_ir_mode_arithmetic(type);
2066 if (is_type_pointer(type)) {
2067 offset = get_type_size_node(type->pointer.points_to);
2069 assert(is_type_arithmetic(type));
2070 offset = new_Const(get_mode_one(mode));
2073 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
2074 expression_t const *const value_expr = expr->value;
2075 ir_node *const addr = expression_to_addr(value_expr);
2076 ir_node *const value = get_value_from_lvalue(value_expr, addr);
2077 ir_node *const value_arith = create_conv(dbgi, value, mode);
2078 ir_node *const new_value = inc
2079 ? new_d_Add(dbgi, value_arith, offset, mode)
2080 : new_d_Sub(dbgi, value_arith, offset, mode);
2082 ir_node *const store_value = set_value_for_expression_addr(value_expr, new_value, addr);
2083 return pre ? store_value : value;
2086 static bool is_local_variable(expression_t *expression)
2088 if (expression->kind != EXPR_REFERENCE)
2090 reference_expression_t *ref_expr = &expression->reference;
2091 entity_t *entity = ref_expr->entity;
2092 if (entity->kind != ENTITY_VARIABLE)
2094 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2095 return entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE;
2098 static ir_relation get_relation(const expression_kind_t kind)
2101 case EXPR_BINARY_EQUAL: return ir_relation_equal;
2102 case EXPR_BINARY_ISLESSGREATER: return ir_relation_less_greater;
2103 case EXPR_BINARY_NOTEQUAL: return ir_relation_unordered_less_greater;
2104 case EXPR_BINARY_ISLESS:
2105 case EXPR_BINARY_LESS: return ir_relation_less;
2106 case EXPR_BINARY_ISLESSEQUAL:
2107 case EXPR_BINARY_LESSEQUAL: return ir_relation_less_equal;
2108 case EXPR_BINARY_ISGREATER:
2109 case EXPR_BINARY_GREATER: return ir_relation_greater;
2110 case EXPR_BINARY_ISGREATEREQUAL:
2111 case EXPR_BINARY_GREATEREQUAL: return ir_relation_greater_equal;
2112 case EXPR_BINARY_ISUNORDERED: return ir_relation_unordered;
2117 panic("trying to get ir_relation from non-comparison binexpr type");
2121 * Handle the assume optimizer hint: check if a Confirm
2122 * node can be created.
2124 * @param dbi debug info
2125 * @param expr the IL assume expression
2127 * we support here only some simple cases:
2132 static ir_node *handle_assume_compare(dbg_info *dbi,
2133 const binary_expression_t *expression)
2135 expression_t *op1 = expression->left;
2136 expression_t *op2 = expression->right;
2137 entity_t *var2, *var = NULL;
2138 ir_node *res = NULL;
2139 ir_relation relation = get_relation(expression->base.kind);
2141 if (is_local_variable(op1) && is_local_variable(op2)) {
2142 var = op1->reference.entity;
2143 var2 = op2->reference.entity;
2145 type_t *const type = skip_typeref(var->declaration.type);
2146 ir_mode *const mode = get_ir_mode_storage(type);
2148 ir_node *const irn1 = get_value(var->variable.v.value_number, mode);
2149 ir_node *const irn2 = get_value(var2->variable.v.value_number, mode);
2151 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_relation(relation));
2152 set_value(var2->variable.v.value_number, res);
2154 res = new_d_Confirm(dbi, irn1, irn2, relation);
2155 set_value(var->variable.v.value_number, res);
2160 expression_t *con = NULL;
2161 if (is_local_variable(op1) && is_constant_expression(op2) == EXPR_CLASS_CONSTANT) {
2162 var = op1->reference.entity;
2164 } else if (is_constant_expression(op1) == EXPR_CLASS_CONSTANT && is_local_variable(op2)) {
2165 relation = get_inversed_relation(relation);
2166 var = op2->reference.entity;
2171 type_t *const type = skip_typeref(var->declaration.type);
2172 ir_mode *const mode = get_ir_mode_storage(type);
2174 res = get_value(var->variable.v.value_number, mode);
2175 res = new_d_Confirm(dbi, res, expression_to_value(con), relation);
2176 set_value(var->variable.v.value_number, res);
2182 * Handle the assume optimizer hint.
2184 * @param dbi debug info
2185 * @param expr the IL assume expression
2187 static ir_node *handle_assume(expression_t const *const expr)
2189 switch (expr->kind) {
2190 case EXPR_BINARY_EQUAL:
2191 case EXPR_BINARY_NOTEQUAL:
2192 case EXPR_BINARY_LESS:
2193 case EXPR_BINARY_LESSEQUAL:
2194 case EXPR_BINARY_GREATER:
2195 case EXPR_BINARY_GREATEREQUAL: {
2196 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
2197 return handle_assume_compare(dbgi, &expr->binary);
2205 static ir_node *create_cast(unary_expression_t const *const expr)
2207 type_t *const type = skip_typeref(expr->base.type);
2208 if (is_type_void(type))
2211 type_t *const from_type = skip_typeref(expr->value->base.type);
2212 ir_node *value = is_type_complex(from_type)
2213 ? expression_to_complex(expr->value).real
2214 : expression_to_value(expr->value);
2216 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
2217 ir_mode *const mode = get_ir_mode_storage(type);
2218 /* check for conversion from / to __based types */
2219 if (is_type_pointer(type) && is_type_pointer(from_type)) {
2220 const variable_t *from_var = from_type->pointer.base_variable;
2221 const variable_t *to_var = type->pointer.base_variable;
2222 if (from_var != to_var) {
2223 if (from_var != NULL) {
2224 ir_node *const addr = create_symconst(dbgi, from_var->v.entity);
2225 ir_node *const base = deref_address(dbgi, from_var->base.type, addr);
2226 value = new_d_Add(dbgi, value, base, mode);
2228 if (to_var != NULL) {
2229 ir_node *const addr = create_symconst(dbgi, to_var->v.entity);
2230 ir_node *const base = deref_address(dbgi, to_var->base.type, addr);
2231 value = new_d_Sub(dbgi, value, base, mode);
2236 return create_conv(dbgi, value, mode);
2239 static ir_node *complement_to_firm(unary_expression_t const *const expr)
2241 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
2242 type_t *const type = skip_typeref(expr->base.type);
2243 ir_mode *const mode = get_ir_mode_arithmetic(type);
2244 ir_node *const value = create_conv(dbgi, expression_to_value(expr->value), mode);
2245 return new_d_Not(dbgi, value, mode);
2248 static ir_node *dereference_to_firm(unary_expression_t const *const expr)
2250 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
2251 ir_node *value = expression_to_value(expr->value);
2252 type_t *const value_type = skip_typeref(expr->value->base.type);
2253 assert(is_type_pointer(value_type));
2255 /* check for __based */
2256 variable_t const *const base_var = value_type->pointer.base_variable;
2258 ir_node *const addr = create_symconst(dbgi, base_var->v.entity);
2259 ir_node *const base = deref_address(dbgi, base_var->base.type, addr);
2260 value = new_d_Add(dbgi, value, base, get_ir_mode_storage(value_type));
2262 type_t *const points_to = value_type->pointer.points_to;
2263 return deref_address(dbgi, points_to, value);
2266 static ir_node *negate_to_firm(unary_expression_t const *const expr)
2268 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
2269 type_t *const type = skip_typeref(expr->base.type);
2270 ir_mode *const mode = get_ir_mode_arithmetic(type);
2271 ir_node *const value = create_conv(dbgi, expression_to_value(expr->value), mode);
2272 return new_d_Minus(dbgi, value, mode);
2275 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2276 ir_node *value, type_t *type)
2278 ir_mode *const mode = get_ir_mode_storage(type_ptrdiff_t);
2279 assert(is_type_pointer(type));
2280 pointer_type_t *const pointer_type = &type->pointer;
2281 type_t *const points_to = skip_typeref(pointer_type->points_to);
2282 ir_node * elem_size = get_type_size_node(points_to);
2283 elem_size = create_conv(dbgi, elem_size, mode);
2284 value = create_conv(dbgi, value, mode);
2285 ir_node *const mul = new_d_Mul(dbgi, value, elem_size, mode);
2289 static ir_node *create_div(dbg_info *dbgi, ir_node *left, ir_node *right,
2292 ir_node *pin = new_Pin(new_NoMem());
2293 ir_node *op = new_d_Div(dbgi, pin, left, right, mode,
2294 op_pin_state_floats);
2295 return new_d_Proj(dbgi, op, mode, pn_Div_res);
2298 static ir_node *create_op(binary_expression_t const *const expr, ir_node *left, ir_node *right)
2301 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
2302 type_t *const type_left = skip_typeref(expr->left->base.type);
2303 type_t *const type_right = skip_typeref(expr->right->base.type);
2304 expression_kind_t const kind = expr->base.kind;
2306 case EXPR_BINARY_SHIFTLEFT:
2307 case EXPR_BINARY_SHIFTRIGHT:
2308 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2309 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2310 mode = get_ir_mode_arithmetic(expr->base.type);
2311 left = create_conv(dbgi, left, mode);
2312 right = create_conv(dbgi, right, atomic_modes[ATOMIC_TYPE_UINT]);
2315 case EXPR_BINARY_SUB:
2316 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2317 const pointer_type_t *const ptr_type = &type_left->pointer;
2319 mode = get_ir_mode_storage(expr->base.type);
2320 ir_node *const elem_size = get_type_size_node(ptr_type->points_to);
2321 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2322 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2323 ir_node *const no_mem = new_NoMem();
2324 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2325 mode, op_pin_state_floats);
2326 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2329 case EXPR_BINARY_SUB_ASSIGN:
2330 if (is_type_pointer(type_left)) {
2331 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2332 mode = get_ir_mode_storage(type_left);
2337 case EXPR_BINARY_ADD:
2338 case EXPR_BINARY_ADD_ASSIGN:
2339 if (is_type_pointer(type_left)) {
2340 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2341 mode = get_ir_mode_storage(type_left);
2343 } else if (is_type_pointer(type_right)) {
2344 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2345 mode = get_ir_mode_storage(type_right);
2352 mode = get_ir_mode_arithmetic(type_right);
2353 left = create_conv(dbgi, left, mode);
2354 right = create_conv(dbgi, right, mode);
2359 case EXPR_BINARY_ADD_ASSIGN:
2360 case EXPR_BINARY_ADD:
2361 return new_d_Add(dbgi, left, right, mode);
2362 case EXPR_BINARY_SUB_ASSIGN:
2363 case EXPR_BINARY_SUB:
2364 return new_d_Sub(dbgi, left, right, mode);
2365 case EXPR_BINARY_MUL_ASSIGN:
2366 case EXPR_BINARY_MUL:
2367 return new_d_Mul(dbgi, left, right, mode);
2368 case EXPR_BINARY_DIV:
2369 case EXPR_BINARY_DIV_ASSIGN:
2370 return create_div(dbgi, left, right, mode);
2371 case EXPR_BINARY_BITWISE_AND:
2372 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2373 return new_d_And(dbgi, left, right, mode);
2374 case EXPR_BINARY_BITWISE_OR:
2375 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2376 return new_d_Or(dbgi, left, right, mode);
2377 case EXPR_BINARY_BITWISE_XOR:
2378 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2379 return new_d_Eor(dbgi, left, right, mode);
2380 case EXPR_BINARY_SHIFTLEFT:
2381 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2382 return new_d_Shl(dbgi, left, right, mode);
2383 case EXPR_BINARY_SHIFTRIGHT:
2384 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2385 if (mode_is_signed(mode)) {
2386 return new_d_Shrs(dbgi, left, right, mode);
2388 return new_d_Shr(dbgi, left, right, mode);
2390 case EXPR_BINARY_MOD:
2391 case EXPR_BINARY_MOD_ASSIGN: {
2392 ir_node *pin = new_Pin(new_NoMem());
2393 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2394 op_pin_state_floats);
2395 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2399 panic("unexpected expression kind");
2403 static ir_node *binop_to_firm(binary_expression_t const *const expr)
2405 ir_node *const left = expression_to_value(expr->left);
2406 ir_node *const right = expression_to_value(expr->right);
2407 return create_op(expr, left, right);
2411 * Check if a given expression is a GNU __builtin_expect() call.
2413 static bool is_builtin_expect(const expression_t *expression)
2415 if (expression->kind != EXPR_CALL)
2418 expression_t *function = expression->call.function;
2419 if (function->kind != EXPR_REFERENCE)
2421 reference_expression_t *ref = &function->reference;
2422 if (ref->entity->kind != ENTITY_FUNCTION ||
2423 ref->entity->function.btk != BUILTIN_EXPECT)
2429 static void compare_to_control_flow(expression_t const *const expr, ir_node *const left, ir_node *const right, ir_relation const relation, jump_target *const true_target, jump_target *const false_target)
2431 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
2432 ir_node *const cmp = new_d_Cmp(dbgi, left, right, relation);
2433 if (is_Const(cmp)) {
2434 if (tarval_is_null(get_Const_tarval(cmp))) {
2435 jump_to_target(false_target);
2437 jump_to_target(true_target);
2440 ir_node *const cond = new_d_Cond(dbgi, cmp);
2441 ir_node *const true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
2442 ir_node *const false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
2444 /* set branch prediction info based on __builtin_expect */
2445 if (is_builtin_expect(expr) && is_Cond(cond)) {
2446 call_argument_t *const argument = expr->call.arguments->next;
2447 if (is_constant_expression(argument->expression) == EXPR_CLASS_CONSTANT) {
2448 bool const cnst = fold_constant_to_bool(argument->expression);
2449 cond_jmp_predicate const pred = cnst ? COND_JMP_PRED_TRUE : COND_JMP_PRED_FALSE;
2450 set_Cond_jmp_pred(cond, pred);
2454 add_pred_to_jump_target(true_target, true_proj);
2455 add_pred_to_jump_target(false_target, false_proj);
2457 set_unreachable_now();
2460 static ir_node *control_flow_to_1_0(expression_t const *const expr, jump_target *const true_target, jump_target *const false_target)
2462 ir_node *val = NULL;
2463 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
2464 ir_mode *const mode = get_ir_mode_storage(expr->base.type);
2465 jump_target exit_target;
2466 init_jump_target(&exit_target, NULL);
2468 if (enter_jump_target(true_target)) {
2469 jump_to_target(&exit_target);
2470 val = new_d_Const(dbgi, get_mode_one(mode));
2473 if (enter_jump_target(false_target)) {
2474 jump_to_target(&exit_target);
2475 ir_node *const zero = new_d_Const(dbgi, get_mode_null(mode));
2477 ir_node *const in[] = { val, zero };
2478 val = new_rd_Phi(dbgi, exit_target.block, lengthof(in), in, mode);
2484 if (!enter_jump_target(&exit_target)) {
2485 set_cur_block(new_Block(0, NULL));
2486 val = new_d_Bad(dbgi, mode);
2491 static ir_node *binop_assign_to_firm(binary_expression_t const *const expr)
2493 ir_node *const right = expression_to_value(expr->right);
2494 expression_t const *const left_expr = expr->left;
2495 ir_node *const addr = expression_to_addr(left_expr);
2496 ir_node *const left = get_value_from_lvalue(left_expr, addr);
2497 ir_node *result = create_op(expr, left, right);
2499 type_t *const type = skip_typeref(expr->base.type);
2500 if (is_type_atomic(type, ATOMIC_TYPE_BOOL)) {
2501 jump_target true_target;
2502 jump_target false_target;
2503 init_jump_target(&true_target, NULL);
2504 init_jump_target(&false_target, NULL);
2505 ir_mode *const mode = get_irn_mode(result);
2506 ir_node *const zero = new_Const(get_mode_null(mode));
2507 compare_to_control_flow((expression_t const*)expr, result, zero, ir_relation_unordered_less_greater, &true_target, &false_target);
2508 result = control_flow_to_1_0((expression_t const*)expr, &true_target, &false_target);
2511 return set_value_for_expression_addr(left_expr, result, addr);
2514 static ir_node *assign_expression_to_firm(binary_expression_t const *const expr)
2516 ir_node *const addr = expression_to_addr(expr->left);
2517 ir_node *const right = expression_to_value(expr->right);
2518 return set_value_for_expression_addr(expr->left, right, addr);
2521 /** evaluate an expression and discard the result, but still produce the
2523 static void evaluate_expression_discard_result(const expression_t *expression)
2525 type_t *type = skip_typeref(expression->base.type);
2526 if (is_type_complex(type)) {
2527 expression_to_complex(expression);
2529 expression_to_value(expression);
2533 static ir_node *comma_expression_to_firm(binary_expression_t const *const expr)
2535 evaluate_expression_discard_result(expr->left);
2536 return expression_to_value(expr->right);
2539 static ir_node *array_access_addr(const array_access_expression_t *expression)
2541 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
2542 ir_node *base_addr = expression_to_value(expression->array_ref);
2543 ir_node *offset = expression_to_value(expression->index);
2544 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2545 ir_node *real_offset = adjust_for_pointer_arithmetic(dbgi, offset, ref_type);
2546 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2551 static ir_node *array_access_to_firm(
2552 const array_access_expression_t *expression)
2554 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
2555 ir_node *addr = array_access_addr(expression);
2556 type_t *type = revert_automatic_type_conversion(
2557 (const expression_t*) expression);
2558 type = skip_typeref(type);
2560 return deref_address(dbgi, type, addr);
2563 static long get_offsetof_offset(const offsetof_expression_t *expression)
2565 type_t *orig_type = expression->type;
2568 designator_t *designator = expression->designator;
2569 for ( ; designator != NULL; designator = designator->next) {
2570 type_t *type = skip_typeref(orig_type);
2571 /* be sure the type is constructed */
2572 (void) get_ir_type(type);
2574 if (designator->symbol != NULL) {
2575 assert(is_type_compound(type));
2576 symbol_t *symbol = designator->symbol;
2578 compound_t *compound = type->compound.compound;
2579 entity_t *iter = compound->members.entities;
2580 for (; iter->base.symbol != symbol; iter = iter->base.next) {}
2582 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
2583 assert(iter->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2584 offset += get_entity_offset(iter->compound_member.entity);
2586 orig_type = iter->declaration.type;
2588 expression_t *array_index = designator->array_index;
2589 assert(designator->array_index != NULL);
2590 assert(is_type_array(type));
2592 long index = fold_constant_to_int(array_index);
2593 ir_type *arr_type = get_ir_type(type);
2594 ir_type *elem_type = get_array_element_type(arr_type);
2595 long elem_size = get_type_size_bytes(elem_type);
2597 offset += index * elem_size;
2599 orig_type = type->array.element_type;
2606 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2608 ir_mode *mode = get_ir_mode_storage(expression->base.type);
2609 long offset = get_offsetof_offset(expression);
2610 ir_tarval *tv = new_tarval_from_long(offset, mode);
2611 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
2613 return new_d_Const(dbgi, tv);
2616 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2617 ir_entity *entity, type_t *type);
2618 static ir_initializer_t *create_ir_initializer(
2619 const initializer_t *initializer, type_t *type);
2621 static ir_entity *create_initializer_entity(dbg_info *dbgi,
2622 initializer_t *initializer,
2625 /* create the ir_initializer */
2626 PUSH_IRG(get_const_code_irg());
2627 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
2630 ident *const id = id_unique("initializer.%u");
2631 ir_type *const irtype = get_ir_type(type);
2632 ir_type *const global_type = get_glob_type();
2633 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
2634 set_entity_ld_ident(entity, id);
2635 set_entity_visibility(entity, ir_visibility_private);
2636 add_entity_linkage(entity, IR_LINKAGE_CONSTANT);
2637 set_entity_initializer(entity, irinitializer);
2641 static ir_node *compound_literal_addr(compound_literal_expression_t const *const expression)
2643 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
2644 type_t *type = expression->type;
2645 initializer_t *initializer = expression->initializer;
2647 if (expression->global_scope ||
2648 ((type->base.qualifiers & TYPE_QUALIFIER_CONST)
2649 && is_constant_initializer(initializer) == EXPR_CLASS_CONSTANT)) {
2650 ir_entity *entity = create_initializer_entity(dbgi, initializer, type);
2651 return create_symconst(dbgi, entity);
2653 /* create an entity on the stack */
2654 ident *const id = id_unique("CompLit.%u");
2655 ir_type *const irtype = get_ir_type(type);
2656 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2658 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2659 set_entity_ld_ident(entity, id);
2661 /* create initialisation code */
2662 create_local_initializer(initializer, dbgi, entity, type);
2664 /* create a sel for the compound literal address */
2665 ir_node *frame = get_irg_frame(current_ir_graph);
2666 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2671 static ir_node *compound_literal_to_firm(compound_literal_expression_t const* const expr)
2673 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
2674 type_t *const type = expr->type;
2675 ir_node *const addr = compound_literal_addr(expr);
2676 return deref_address(dbgi, type, addr);
2680 * Transform a sizeof expression into Firm code.
2682 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2684 type_t *const type = skip_typeref(expression->type);
2685 /* ยง6.5.3.4:2 if the type is a VLA, evaluate the expression. */
2686 if (is_type_array(type) && type->array.is_vla
2687 && expression->tp_expression != NULL) {
2688 expression_to_value(expression->tp_expression);
2691 return get_type_size_node(type);
2694 static entity_t *get_expression_entity(const expression_t *expression)
2696 if (expression->kind != EXPR_REFERENCE)
2699 return expression->reference.entity;
2702 static unsigned get_cparser_entity_alignment(const entity_t *entity)
2704 switch (entity->kind) {
2705 case DECLARATION_KIND_CASES:
2706 return entity->declaration.alignment;
2709 return entity->compound.alignment;
2710 case ENTITY_TYPEDEF:
2711 return entity->typedefe.alignment;
2719 * Transform an alignof expression into Firm code.
2721 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2723 unsigned alignment = 0;
2725 const expression_t *tp_expression = expression->tp_expression;
2726 if (tp_expression != NULL) {
2727 entity_t *entity = get_expression_entity(tp_expression);
2728 if (entity != NULL) {
2729 alignment = get_cparser_entity_alignment(entity);
2733 if (alignment == 0) {
2734 type_t *type = expression->type;
2735 alignment = get_type_alignment(type);
2738 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
2739 ir_mode *mode = get_ir_mode_storage(expression->base.type);
2740 ir_tarval *tv = new_tarval_from_long(alignment, mode);
2741 return new_d_Const(dbgi, tv);
2744 static void init_ir_types(void);
2746 ir_tarval *fold_constant_to_tarval(const expression_t *expression)
2748 assert(is_constant_expression(expression) == EXPR_CLASS_CONSTANT);
2750 bool constant_folding_old = constant_folding;
2751 constant_folding = true;
2752 int old_optimize = get_optimize();
2753 int old_constant_folding = get_opt_constant_folding();
2755 set_opt_constant_folding(1);
2759 PUSH_IRG(get_const_code_irg());
2760 ir_node *const cnst = expression_to_value(expression);
2763 set_optimize(old_optimize);
2764 set_opt_constant_folding(old_constant_folding);
2765 constant_folding = constant_folding_old;
2767 if (!is_Const(cnst))
2768 panic("couldn't fold constant");
2769 return get_Const_tarval(cnst);
2772 static complex_constant fold_complex_constant(const expression_t *expression)
2774 assert(is_constant_expression(expression) == EXPR_CLASS_CONSTANT);
2776 bool constant_folding_old = constant_folding;
2777 constant_folding = true;
2778 int old_optimize = get_optimize();
2779 int old_constant_folding = get_opt_constant_folding();
2781 set_opt_constant_folding(1);
2785 PUSH_IRG(get_const_code_irg());
2786 complex_value value = expression_to_complex(expression);
2789 set_optimize(old_optimize);
2790 set_opt_constant_folding(old_constant_folding);
2792 if (!is_Const(value.real) || !is_Const(value.imag)) {
2793 panic("couldn't fold constant");
2796 constant_folding = constant_folding_old;
2798 return (complex_constant) {
2799 get_Const_tarval(value.real),
2800 get_Const_tarval(value.imag)
2804 /* this function is only used in parser.c, but it relies on libfirm functionality */
2805 bool constant_is_negative(const expression_t *expression)
2807 ir_tarval *tv = fold_constant_to_tarval(expression);
2808 return tarval_is_negative(tv);
2811 long fold_constant_to_int(const expression_t *expression)
2813 ir_tarval *tv = fold_constant_to_tarval(expression);
2814 if (!tarval_is_long(tv)) {
2815 panic("result of constant folding is not integer");
2818 return get_tarval_long(tv);
2821 bool fold_constant_to_bool(const expression_t *expression)
2823 type_t *type = skip_typeref(expression->base.type);
2824 if (is_type_complex(type)) {
2825 complex_constant tvs = fold_complex_constant(expression);
2826 return !tarval_is_null(tvs.real) || !tarval_is_null(tvs.imag);
2828 ir_tarval *tv = fold_constant_to_tarval(expression);
2829 return !tarval_is_null(tv);
2833 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2835 jump_target true_target;
2836 jump_target false_target;
2837 init_jump_target(&true_target, NULL);
2838 init_jump_target(&false_target, NULL);
2839 ir_node *const cond_expr = expression_to_control_flow(expression->condition, &true_target, &false_target);
2841 ir_node *val = NULL;
2842 dbg_info *const dbgi = get_dbg_info(&expression->base.pos);
2843 type_t *const type = skip_typeref(expression->base.type);
2844 ir_mode *const mode = get_ir_mode_arithmetic(type);
2845 jump_target exit_target;
2846 init_jump_target(&exit_target, NULL);
2848 if (enter_jump_target(&true_target)) {
2849 if (expression->true_expression) {
2850 val = expression_to_value(expression->true_expression);
2851 } else if (cond_expr) {
2854 /* Condition ended with a short circuit (&&, ||, !) operation or a
2855 * comparison. Generate a "1" as value for the true branch. */
2856 val = new_Const(get_mode_one(mode));
2859 val = create_conv(dbgi, val, mode);
2860 jump_to_target(&exit_target);
2863 if (enter_jump_target(&false_target)) {
2864 ir_node *false_val = expression_to_value(expression->false_expression);
2866 false_val = create_conv(dbgi, false_val, mode);
2867 jump_to_target(&exit_target);
2869 ir_node *const in[] = { val, false_val };
2870 val = new_rd_Phi(dbgi, exit_target.block, lengthof(in), in, get_irn_mode(val));
2876 if (!enter_jump_target(&exit_target)) {
2877 set_cur_block(new_Block(0, NULL));
2878 if (!is_type_void(type))
2879 val = new_Bad(mode);
2885 * Returns an IR-node representing the address of a field.
2887 static ir_node *select_addr(const select_expression_t *expression)
2889 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
2891 construct_select_compound(expression);
2893 ir_node *compound_addr = expression_to_value(expression->compound);
2895 entity_t *entry = expression->compound_entry;
2896 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
2897 assert(entry->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2899 if (constant_folding) {
2900 ir_mode *mode = get_irn_mode(compound_addr);
2901 ir_mode *mode_uint = get_reference_mode_unsigned_eq(mode);
2902 ir_node *ofs = new_Const_long(mode_uint, entry->compound_member.offset);
2903 return new_d_Add(dbgi, compound_addr, ofs, mode);
2905 ir_entity *irentity = entry->compound_member.entity;
2906 assert(irentity != NULL);
2907 return new_d_simpleSel(dbgi, new_NoMem(), compound_addr, irentity);
2911 static ir_node *select_to_firm(const select_expression_t *expression)
2913 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
2914 ir_node *addr = select_addr(expression);
2915 type_t *type = revert_automatic_type_conversion(
2916 (const expression_t*) expression);
2917 type = skip_typeref(type);
2919 entity_t *entry = expression->compound_entry;
2920 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
2922 if (entry->compound_member.bitfield) {
2923 return bitfield_extract_to_firm(expression, addr);
2926 return deref_address(dbgi, type, addr);
2929 /* Values returned by __builtin_classify_type. */
2930 typedef enum gcc_type_class
2936 enumeral_type_class,
2939 reference_type_class,
2943 function_type_class,
2954 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2956 type_t *type = expr->type_expression->base.type;
2958 /* FIXME gcc returns different values depending on whether compiling C or C++
2959 * e.g. int x[10] is pointer_type_class in C, but array_type_class in C++ */
2962 type = skip_typeref(type);
2963 switch (type->kind) {
2965 const atomic_type_t *const atomic_type = &type->atomic;
2966 switch (atomic_type->akind) {
2967 /* gcc cannot do that */
2968 case ATOMIC_TYPE_VOID:
2969 tc = void_type_class;
2972 case ATOMIC_TYPE_WCHAR_T: /* gcc handles this as integer */
2973 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2974 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2975 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2976 case ATOMIC_TYPE_SHORT:
2977 case ATOMIC_TYPE_USHORT:
2978 case ATOMIC_TYPE_INT:
2979 case ATOMIC_TYPE_UINT:
2980 case ATOMIC_TYPE_LONG:
2981 case ATOMIC_TYPE_ULONG:
2982 case ATOMIC_TYPE_LONGLONG:
2983 case ATOMIC_TYPE_ULONGLONG:
2984 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2985 tc = integer_type_class;
2988 case ATOMIC_TYPE_FLOAT:
2989 case ATOMIC_TYPE_DOUBLE:
2990 case ATOMIC_TYPE_LONG_DOUBLE:
2991 tc = real_type_class;
2994 panic("Unexpected atomic type.");
2997 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2998 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2999 case TYPE_ARRAY: /* gcc handles this as pointer */
3000 case TYPE_FUNCTION: /* gcc handles this as pointer */
3001 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
3002 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
3003 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
3005 /* gcc handles this as integer */
3006 case TYPE_ENUM: tc = integer_type_class; goto make_const;
3008 /* gcc classifies the referenced type */
3009 case TYPE_REFERENCE: type = type->reference.refers_to; continue;
3011 /* typedef/typeof should be skipped already */
3017 panic("unexpected type.");
3021 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
3022 ir_mode *const mode = atomic_modes[ATOMIC_TYPE_INT];
3023 ir_tarval *const tv = new_tarval_from_long(tc, mode);
3024 return new_d_Const(dbgi, tv);
3027 static ir_node *function_name_to_firm(
3028 const funcname_expression_t *const expr)
3030 switch (expr->kind) {
3031 case FUNCNAME_FUNCTION:
3032 case FUNCNAME_PRETTY_FUNCTION:
3033 case FUNCNAME_FUNCDNAME:
3034 if (current_function_name == NULL) {
3035 position_t const *const src_pos = &expr->base.pos;
3036 char const *const name = current_function_entity->base.symbol->string;
3037 string_t const string = { name, strlen(name), STRING_ENCODING_CHAR };
3038 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
3040 return current_function_name;
3041 case FUNCNAME_FUNCSIG:
3042 if (current_funcsig == NULL) {
3043 position_t const *const src_pos = &expr->base.pos;
3044 ir_entity *const ent = get_irg_entity(current_ir_graph);
3045 char const *const name = get_entity_ld_name(ent);
3046 string_t const string = { name, strlen(name), STRING_ENCODING_CHAR };
3047 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
3049 return current_funcsig;
3051 panic("Unsupported function name");
3054 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
3056 statement_t *statement = expr->statement;
3058 assert(statement->kind == STATEMENT_COMPOUND);
3059 return compound_statement_to_firm(&statement->compound);
3062 static ir_node *va_start_expression_to_firm(
3063 const va_start_expression_t *const expr)
3065 ir_entity *param_ent = current_vararg_entity;
3066 if (param_ent == NULL) {
3067 size_t const n = IR_VA_START_PARAMETER_NUMBER;
3068 ir_type *const frame_type = get_irg_frame_type(current_ir_graph);
3069 ir_type *const param_type = get_unknown_type();
3070 param_ent = new_parameter_entity(frame_type, n, param_type);
3071 current_vararg_entity = param_ent;
3074 ir_node *const frame = get_irg_frame(current_ir_graph);
3075 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
3076 ir_node *const no_mem = new_NoMem();
3077 ir_node *const arg_sel = new_d_simpleSel(dbgi, no_mem, frame, param_ent);
3079 set_value_for_expression_addr(expr->ap, arg_sel, NULL);
3084 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
3086 type_t *const type = expr->base.type;
3087 expression_t *const ap_expr = expr->ap;
3088 ir_node *const ap_addr = expression_to_addr(ap_expr);
3089 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
3090 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
3091 ir_node *const res = deref_address(dbgi, type, ap);
3093 ir_node *const cnst = get_type_size_node(expr->base.type);
3094 ir_mode *const mode = get_irn_mode(cnst);
3095 ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
3096 ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
3097 ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align);
3098 ir_node *const c4 = new_d_And(dbgi, c2, c3, mode);
3099 ir_node *const add = new_d_Add(dbgi, ap, c4, mode_P_data);
3101 set_value_for_expression_addr(ap_expr, add, ap_addr);
3107 * Generate Firm for a va_copy expression.
3109 static ir_node *va_copy_expression_to_firm(const va_copy_expression_t *const expr)
3111 ir_node *const src = expression_to_value(expr->src);
3112 set_value_for_expression_addr(expr->dst, src, NULL);
3116 static ir_node *dereference_addr(const unary_expression_t *const expression)
3118 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
3119 return expression_to_value(expression->value);
3123 * Returns a IR-node representing an lvalue of the given expression.
3125 static ir_node *expression_to_addr(const expression_t *expression)
3127 switch (expression->kind) {
3128 case EXPR_ARRAY_ACCESS:
3129 return array_access_addr(&expression->array_access);
3130 case EXPR_COMPOUND_LITERAL:
3131 return compound_literal_addr(&expression->compound_literal);
3132 case EXPR_REFERENCE:
3133 return reference_addr(&expression->reference);
3135 return select_addr(&expression->select);
3136 case EXPR_UNARY_DEREFERENCE:
3137 return dereference_addr(&expression->unary);
3141 panic("trying to get address of non-lvalue");
3144 static ir_node *builtin_constant_to_firm(
3145 const builtin_constant_expression_t *expression)
3147 ir_mode *const mode = get_ir_mode_storage(expression->base.type);
3148 bool const v = is_constant_expression(expression->value) == EXPR_CLASS_CONSTANT;
3149 return create_Const_from_bool(mode, v);
3152 static ir_node *builtin_types_compatible_to_firm(
3153 const builtin_types_compatible_expression_t *expression)
3155 type_t *const left = get_unqualified_type(skip_typeref(expression->left));
3156 type_t *const right = get_unqualified_type(skip_typeref(expression->right));
3157 bool const value = types_compatible(left, right);
3158 ir_mode *const mode = get_ir_mode_storage(expression->base.type);
3159 return create_Const_from_bool(mode, value);
3162 static void prepare_label_target(label_t *const label)
3164 if (label->address_taken && !label->indirect_block) {
3165 ir_node *const iblock = new_immBlock();
3166 label->indirect_block = iblock;
3167 ARR_APP1(ir_node*, ijmp_blocks, iblock);
3168 jump_from_block_to_target(&label->target, iblock);
3173 * Pointer to a label. This is used for the
3174 * GNU address-of-label extension.
3176 static ir_node *label_address_to_firm(const label_address_expression_t *label)
3178 /* Beware: Might be called from create initializer with current_ir_graph
3179 * set to const_code_irg. */
3180 PUSH_IRG(current_function);
3181 prepare_label_target(label->label);
3184 symconst_symbol value;
3185 value.entity_p = create_Block_entity(label->label->indirect_block);
3186 dbg_info *const dbgi = get_dbg_info(&label->base.pos);
3187 return new_d_SymConst(dbgi, mode_P_code, value, symconst_addr_ent);
3190 static ir_node *expression_to_value(expression_t const *const expr)
3193 if (!constant_folding) {
3194 assert(!expr->base.transformed);
3195 ((expression_t*)expr)->base.transformed = true;
3197 assert(!is_type_complex(skip_typeref(expr->base.type)));
3200 switch (expr->kind) {
3201 case EXPR_UNARY_CAST:
3202 if (is_type_atomic(skip_typeref(expr->base.type), ATOMIC_TYPE_BOOL)) {
3203 case EXPR_BINARY_EQUAL:
3204 case EXPR_BINARY_GREATER:
3205 case EXPR_BINARY_GREATEREQUAL:
3206 case EXPR_BINARY_ISGREATER:
3207 case EXPR_BINARY_ISGREATEREQUAL:
3208 case EXPR_BINARY_ISLESS:
3209 case EXPR_BINARY_ISLESSEQUAL:
3210 case EXPR_BINARY_ISLESSGREATER:
3211 case EXPR_BINARY_ISUNORDERED:
3212 case EXPR_BINARY_LESS:
3213 case EXPR_BINARY_LESSEQUAL:
3214 case EXPR_BINARY_LOGICAL_AND:
3215 case EXPR_BINARY_LOGICAL_OR:
3216 case EXPR_BINARY_NOTEQUAL:
3217 case EXPR_UNARY_NOT:;
3218 jump_target true_target;
3219 jump_target false_target;
3220 init_jump_target(&true_target, NULL);
3221 init_jump_target(&false_target, NULL);
3222 expression_to_control_flow(expr, &true_target, &false_target);
3223 return control_flow_to_1_0(expr, &true_target, &false_target);
3225 return create_cast(&expr->unary);
3228 case EXPR_BINARY_ADD:
3229 case EXPR_BINARY_BITWISE_AND:
3230 case EXPR_BINARY_BITWISE_OR:
3231 case EXPR_BINARY_BITWISE_XOR:
3232 case EXPR_BINARY_DIV:
3233 case EXPR_BINARY_MOD:
3234 case EXPR_BINARY_MUL:
3235 case EXPR_BINARY_SHIFTLEFT:
3236 case EXPR_BINARY_SHIFTRIGHT:
3237 case EXPR_BINARY_SUB:
3238 return binop_to_firm(&expr->binary);
3240 case EXPR_BINARY_ADD_ASSIGN:
3241 case EXPR_BINARY_BITWISE_AND_ASSIGN:
3242 case EXPR_BINARY_BITWISE_OR_ASSIGN:
3243 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
3244 case EXPR_BINARY_DIV_ASSIGN:
3245 case EXPR_BINARY_MOD_ASSIGN:
3246 case EXPR_BINARY_MUL_ASSIGN:
3247 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
3248 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
3249 case EXPR_BINARY_SUB_ASSIGN:
3250 return binop_assign_to_firm(&expr->binary);
3255 case EXPR_UNARY_POSTFIX_DECREMENT: inc = false; pre = false; goto incdec;
3256 case EXPR_UNARY_POSTFIX_INCREMENT: inc = true; pre = false; goto incdec;
3257 case EXPR_UNARY_PREFIX_DECREMENT: inc = false; pre = true; goto incdec;
3258 case EXPR_UNARY_PREFIX_INCREMENT: inc = true; pre = true; goto incdec;
3260 return incdec_to_firm(&expr->unary, inc, pre);
3263 case EXPR_UNARY_IMAG: {
3264 complex_value irvalue = expression_to_complex(expr->unary.value);
3265 return irvalue.imag;
3267 case EXPR_UNARY_REAL: {
3268 complex_value irvalue = expression_to_complex(expr->unary.value);
3269 return irvalue.real;
3272 case EXPR_ALIGNOF: return alignof_to_firm( &expr->typeprop);
3273 case EXPR_ARRAY_ACCESS: return array_access_to_firm( &expr->array_access);
3274 case EXPR_BINARY_ASSIGN: return assign_expression_to_firm( &expr->binary);
3275 case EXPR_BINARY_COMMA: return comma_expression_to_firm( &expr->binary);
3276 case EXPR_BUILTIN_CONSTANT_P: return builtin_constant_to_firm( &expr->builtin_constant);
3277 case EXPR_BUILTIN_TYPES_COMPATIBLE_P: return builtin_types_compatible_to_firm(&expr->builtin_types_compatible);
3278 case EXPR_CALL: return call_expression_to_firm( &expr->call);
3279 case EXPR_CLASSIFY_TYPE: return classify_type_to_firm( &expr->classify_type);
3280 case EXPR_COMPOUND_LITERAL: return compound_literal_to_firm( &expr->compound_literal);
3281 case EXPR_CONDITIONAL: return conditional_to_firm( &expr->conditional);
3282 case EXPR_ENUM_CONSTANT: return enum_constant_to_firm( &expr->reference);
3283 case EXPR_FUNCNAME: return function_name_to_firm( &expr->funcname);
3284 case EXPR_LABEL_ADDRESS: return label_address_to_firm( &expr->label_address);
3285 case EXPR_LITERAL_CASES: return literal_to_firm( &expr->literal);
3286 case EXPR_LITERAL_CHARACTER: return char_literal_to_firm( &expr->string_literal);
3287 case EXPR_OFFSETOF: return offsetof_to_firm( &expr->offsetofe);
3288 case EXPR_REFERENCE: return reference_expression_to_firm( &expr->reference);
3289 case EXPR_SELECT: return select_to_firm( &expr->select);
3290 case EXPR_SIZEOF: return sizeof_to_firm( &expr->typeprop);
3291 case EXPR_STATEMENT: return statement_expression_to_firm( &expr->statement);
3292 case EXPR_STRING_LITERAL: return string_to_firm( &expr->base.pos, "str.%u", &expr->string_literal.value);
3293 case EXPR_UNARY_ASSUME: return handle_assume( expr->unary.value);
3294 case EXPR_UNARY_COMPLEMENT: return complement_to_firm( &expr->unary);
3295 case EXPR_UNARY_DEREFERENCE: return dereference_to_firm( &expr->unary);
3296 case EXPR_UNARY_NEGATE: return negate_to_firm( &expr->unary);
3297 case EXPR_UNARY_PLUS: return expression_to_value( expr->unary.value);
3298 case EXPR_UNARY_TAKE_ADDRESS: return expression_to_addr( expr->unary.value);
3299 case EXPR_VA_ARG: return va_arg_expression_to_firm( &expr->va_arge);
3300 case EXPR_VA_COPY: return va_copy_expression_to_firm( &expr->va_copye);
3301 case EXPR_VA_START: return va_start_expression_to_firm( &expr->va_starte);
3303 case EXPR_UNARY_DELETE:
3304 case EXPR_UNARY_DELETE_ARRAY:
3305 case EXPR_UNARY_THROW:
3306 panic("expression not implemented");
3311 panic("invalid expression");
3314 static void complex_equality_evaluation(const binary_expression_t *binexpr,
3315 jump_target *const true_target, jump_target *const false_target,
3316 ir_relation relation);
3318 static complex_value complex_to_control_flow(const expression_t *expression,
3319 jump_target *true_target,
3320 jump_target *false_target);
3323 * create a short-circuit expression evaluation that tries to construct
3324 * efficient control flow structures for &&, || and ! expressions
3326 static ir_node *expression_to_control_flow(expression_t const *const expr, jump_target *const true_target, jump_target *const false_target)
3328 switch (expr->kind) {
3329 case EXPR_UNARY_NOT:
3330 expression_to_control_flow(expr->unary.value, false_target, true_target);
3333 case EXPR_BINARY_LOGICAL_AND: {
3334 jump_target extra_target;
3335 init_jump_target(&extra_target, NULL);
3336 expression_to_control_flow(expr->binary.left, &extra_target, false_target);
3337 if (enter_jump_target(&extra_target))
3338 expression_to_control_flow(expr->binary.right, true_target, false_target);
3342 case EXPR_BINARY_LOGICAL_OR: {
3343 jump_target extra_target;
3344 init_jump_target(&extra_target, NULL);
3345 expression_to_control_flow(expr->binary.left, true_target, &extra_target);
3346 if (enter_jump_target(&extra_target))
3347 expression_to_control_flow(expr->binary.right, true_target, false_target);
3351 case EXPR_BINARY_COMMA:
3352 evaluate_expression_discard_result(expr->binary.left);
3353 return expression_to_control_flow(expr->binary.right, true_target, false_target);
3355 case EXPR_BINARY_EQUAL:
3356 case EXPR_BINARY_GREATER:
3357 case EXPR_BINARY_GREATEREQUAL:
3358 case EXPR_BINARY_ISGREATER:
3359 case EXPR_BINARY_ISGREATEREQUAL:
3360 case EXPR_BINARY_ISLESS:
3361 case EXPR_BINARY_ISLESSEQUAL:
3362 case EXPR_BINARY_ISLESSGREATER:
3363 case EXPR_BINARY_ISUNORDERED:
3364 case EXPR_BINARY_LESS:
3365 case EXPR_BINARY_LESSEQUAL:
3366 case EXPR_BINARY_NOTEQUAL: {
3367 type_t *const type = skip_typeref(expr->binary.left->base.type);
3368 ir_relation const relation = get_relation(expr->kind);
3369 if (is_type_complex(type)) {
3370 complex_equality_evaluation(&expr->binary, true_target,
3371 false_target, relation);
3375 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
3376 ir_mode *const mode = get_ir_mode_arithmetic(type);
3377 ir_node *const left = create_conv(dbgi, expression_to_value(expr->binary.left), mode);
3378 ir_node *const right = create_conv(dbgi, expression_to_value(expr->binary.right), mode);
3379 compare_to_control_flow(expr, left, right, relation, true_target, false_target);
3383 case EXPR_UNARY_CAST:
3384 if (is_type_atomic(skip_typeref(expr->base.type), ATOMIC_TYPE_BOOL)) {
3385 expression_to_control_flow(expr->unary.value, true_target, false_target);
3389 type_t *const type = skip_typeref(expr->base.type);
3390 if (is_type_complex(type)) {
3391 complex_to_control_flow(expr, true_target, false_target);
3395 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
3396 ir_mode *const mode = get_ir_mode_arithmetic(type);
3397 ir_node *const val = create_conv(dbgi, expression_to_value(expr), mode);
3398 ir_node *const left = val;
3399 ir_node *const right = new_Const(get_mode_null(get_irn_mode(val)));
3400 ir_relation const relation = ir_relation_unordered_less_greater;
3401 compare_to_control_flow(expr, left, right, relation, true_target, false_target);
3407 static complex_value complex_conv(dbg_info *dbgi, complex_value value,
3410 return (complex_value) {
3411 create_conv(dbgi, value.real, mode),
3412 create_conv(dbgi, value.imag, mode)
3416 static complex_value complex_conv_to_storage(dbg_info *const dbgi,
3417 complex_value const value, type_t *const type)
3419 ir_mode *const mode = get_complex_mode_storage(type);
3420 return complex_conv(dbgi, value, mode);
3423 static void store_complex(dbg_info *dbgi, ir_node *addr, type_t *type,
3424 complex_value value)
3426 value = complex_conv_to_storage(dbgi, value, type);
3427 ir_graph *const irg = current_ir_graph;
3428 ir_type *const irtype = get_ir_type(type);
3429 ir_node *const mem = get_store();
3430 ir_node *const nomem = get_irg_no_mem(irg);
3431 ir_mode *const mode = get_complex_mode_storage(type);
3432 ir_node *const real = create_conv(dbgi, value.real, mode);
3433 ir_node *const imag = create_conv(dbgi, value.imag, mode);
3434 ir_node *const storer = new_d_Store(dbgi, mem, addr, real, cons_floats);
3435 ir_node *const memr = new_Proj(storer, mode_M, pn_Store_M);
3436 ir_mode *const muint = atomic_modes[ATOMIC_TYPE_UINT];
3437 ir_node *const one = new_Const(get_mode_one(muint));
3438 ir_node *const in[1] = { one };
3439 ir_entity *const arrent = get_array_element_entity(irtype);
3440 ir_node *const addri = new_d_Sel(dbgi, nomem, addr, 1, in, arrent);
3441 ir_node *const storei = new_d_Store(dbgi, memr, addri, imag, cons_floats);
3442 ir_node *const memi = new_Proj(storei, mode_M, pn_Store_M);
3446 static ir_node *complex_to_memory(dbg_info *dbgi, type_t *type,
3447 complex_value value)
3449 ir_graph *const irg = current_ir_graph;
3450 ir_type *const frame_type = get_irg_frame_type(irg);
3451 ident *const id = id_unique("cmplex_tmp.%u");
3452 ir_type *const irtype = get_ir_type(type);
3453 ir_entity *const tmp_storage = new_entity(frame_type, id, irtype);
3454 ir_node *const frame = get_irg_frame(irg);
3455 ir_node *const nomem = get_irg_no_mem(irg);
3456 ir_node *const addr = new_simpleSel(nomem, frame, tmp_storage);
3457 set_entity_compiler_generated(tmp_storage, 1);
3458 store_complex(dbgi, addr, type, value);
3462 static complex_value read_localvar_complex(dbg_info *dbgi, entity_t *const entity)
3464 assert(entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE
3465 || entity->declaration.kind == DECLARATION_KIND_PARAMETER);
3466 type_t *const type = skip_typeref(entity->declaration.type);
3467 ir_mode *const mode = get_complex_mode_storage(type);
3468 ir_node *const real = get_value(entity->variable.v.value_number, mode);
3469 ir_node *const imag = get_value(entity->variable.v.value_number+1, mode);
3470 ir_mode *const mode_arithmetic = get_complex_mode_arithmetic(type);
3471 return (complex_value) {
3472 create_conv(dbgi, real, mode_arithmetic),
3473 create_conv(dbgi, imag, mode_arithmetic)
3477 static complex_value complex_deref_address(dbg_info *const dbgi,
3478 type_t *type, ir_node *const addr,
3479 ir_cons_flags flags)
3481 type = skip_typeref(type);
3482 assert(is_type_complex(type));
3484 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
3485 flags |= cons_volatile;
3486 ir_mode *const mode = get_complex_mode_storage(type);
3487 ir_node *const memory = get_store();
3488 ir_node *const load = new_d_Load(dbgi, memory, addr, mode, flags);
3489 ir_node *const load_mem = new_Proj(load, mode_M, pn_Load_M);
3490 ir_node *const load_res = new_Proj(load, mode, pn_Load_res);
3492 ir_type *const irtype = get_ir_type(type);
3493 ir_mode *const mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
3494 ir_node *const in[1] = { new_Const(get_mode_one(mode_uint)) };
3495 ir_entity *const entity = get_array_element_entity(irtype);
3496 ir_node *const nomem = get_irg_no_mem(current_ir_graph);
3497 ir_node *const addr2 = new_Sel(nomem, addr, 1, in, entity);
3498 ir_node *const load2 = new_d_Load(dbgi, load_mem, addr2, mode, flags);
3499 ir_node *const load_mem2 = new_Proj(load2, mode_M, pn_Load_M);
3500 ir_node *const load_res2 = new_Proj(load2, mode, pn_Load_res);
3501 set_store(load_mem2);
3503 return (complex_value) { load_res, load_res2 };
3506 static complex_value complex_reference_to_firm(const reference_expression_t *ref)
3508 dbg_info *const dbgi = get_dbg_info(&ref->base.pos);
3509 entity_t *const entity = ref->entity;
3510 assert(is_declaration(entity));
3512 switch ((declaration_kind_t)entity->declaration.kind) {
3513 case DECLARATION_KIND_LOCAL_VARIABLE:
3514 case DECLARATION_KIND_PARAMETER:
3515 return read_localvar_complex(dbgi, entity);
3517 ir_node *const addr = reference_addr(ref);
3518 return complex_deref_address(dbgi, entity->declaration.type, addr, cons_none);
3523 static complex_value complex_select_to_firm(const select_expression_t *select)
3525 dbg_info *const dbgi = get_dbg_info(&select->base.pos);
3526 ir_node *const addr = select_addr(select);
3527 type_t *const type = skip_typeref(select->base.type);
3528 return complex_deref_address(dbgi, type, addr, cons_none);
3531 static complex_value complex_array_access_to_firm(
3532 const array_access_expression_t *expression)
3534 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
3535 ir_node *addr = array_access_addr(expression);
3536 type_t *type = skip_typeref(expression->base.type);
3537 assert(is_type_complex(type));
3538 return complex_deref_address(dbgi, type, addr, cons_none);
3541 static complex_value get_complex_from_lvalue(const expression_t *expression,
3544 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
3546 if (expression->kind == EXPR_REFERENCE) {
3547 const reference_expression_t *ref = &expression->reference;
3549 entity_t *entity = ref->entity;
3550 assert(entity->kind == ENTITY_VARIABLE
3551 || entity->kind == ENTITY_PARAMETER);
3552 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
3553 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE ||
3554 entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
3555 return read_localvar_complex(dbgi, entity);
3559 assert(addr != NULL);
3560 return complex_deref_address(dbgi, expression->base.type, addr, cons_none);
3563 static complex_value complex_cast_to_firm(const unary_expression_t *expression)
3565 const expression_t *const value = expression->value;
3566 dbg_info *const dbgi = get_dbg_info(&expression->base.pos);
3567 type_t *const from_type = skip_typeref(value->base.type);
3568 type_t *const to_type = skip_typeref(expression->base.type);
3569 ir_mode *const mode = get_complex_mode_storage(to_type);
3571 if (is_type_complex(from_type)) {
3572 complex_value cvalue = expression_to_complex(value);
3573 return complex_conv(dbgi, cvalue, mode);
3575 ir_node *const value_node = expression_to_value(value);
3576 ir_node *const zero = new_Const(get_mode_null(mode));
3577 ir_node *const casted = create_conv(dbgi, value_node, mode);
3578 return (complex_value) { casted, zero };
3582 static complex_value complex_literal_to_firm(const literal_expression_t *literal)
3584 type_t *type = skip_typeref(literal->base.type);
3585 ir_mode *mode = get_complex_mode_storage(type);
3586 ir_node *litvalue = literal_to_firm_(literal, mode);
3587 ir_node *zero = new_Const(get_mode_null(mode));
3588 return (complex_value) { zero, litvalue };
3591 typedef complex_value (*new_complex_binop)(dbg_info *dbgi, complex_value left,
3592 complex_value right, ir_mode *mode);
3594 static complex_value new_complex_add(dbg_info *dbgi, complex_value left,
3595 complex_value right, ir_mode *mode)
3597 return (complex_value) {
3598 new_d_Add(dbgi, left.real, right.real, mode),
3599 new_d_Add(dbgi, left.imag, right.imag, mode)
3603 static complex_value new_complex_sub(dbg_info *dbgi, complex_value left,
3604 complex_value right, ir_mode *mode)
3606 return (complex_value) {
3607 new_d_Sub(dbgi, left.real, right.real, mode),
3608 new_d_Sub(dbgi, left.imag, right.imag, mode)
3612 static complex_value new_complex_mul(dbg_info *dbgi, complex_value left,
3613 complex_value right, ir_mode *mode)
3615 ir_node *const op1 = new_d_Mul(dbgi, left.real, right.real, mode);
3616 ir_node *const op2 = new_d_Mul(dbgi, left.imag, right.imag, mode);
3617 ir_node *const op3 = new_d_Mul(dbgi, left.real, right.imag, mode);
3618 ir_node *const op4 = new_d_Mul(dbgi, left.imag, right.real, mode);
3619 return (complex_value) {
3620 new_d_Sub(dbgi, op1, op2, mode),
3621 new_d_Add(dbgi, op3, op4, mode)
3625 static complex_value new_complex_div(dbg_info *dbgi, complex_value left,
3626 complex_value right, ir_mode *mode)
3628 ir_node *const op1 = new_d_Mul(dbgi, left.real, right.real, mode);
3629 ir_node *const op2 = new_d_Mul(dbgi, left.imag, right.imag, mode);
3630 ir_node *const op3 = new_d_Mul(dbgi, left.imag, right.real, mode);
3631 ir_node *const op4 = new_d_Mul(dbgi, left.real, right.imag, mode);
3632 ir_node *const op5 = new_d_Mul(dbgi, right.real, right.real, mode);
3633 ir_node *const op6 = new_d_Mul(dbgi, right.imag, right.imag, mode);
3634 ir_node *const real_dividend = new_d_Add(dbgi, op1, op2, mode);
3635 ir_node *const real_divisor = new_d_Add(dbgi, op5, op6, mode);
3636 ir_node *const imag_dividend = new_d_Sub(dbgi, op3, op4, mode);
3637 ir_node *const imag_divisor = new_d_Add(dbgi, op5, op6, mode);
3638 return (complex_value) {
3639 create_div(dbgi, real_dividend, real_divisor, mode),
3640 create_div(dbgi, imag_dividend, imag_divisor, mode)
3644 typedef complex_value (*new_complex_unop)(dbg_info *dbgi, complex_value value,
3647 static complex_value new_complex_increment(dbg_info *dbgi, complex_value value,
3650 ir_node *one = new_Const(get_mode_one(mode));
3651 return (complex_value) {
3652 new_d_Add(dbgi, value.real, one, mode),
3657 static complex_value new_complex_decrement(dbg_info *dbgi, complex_value value,
3660 ir_node *one = new_Const(get_mode_one(mode));
3661 return (complex_value) {
3662 new_d_Sub(dbgi, value.real, one, mode),
3667 static void set_complex_value_for_expression(dbg_info *dbgi,
3668 const expression_t *expression,
3669 complex_value value,
3672 type_t *const type = skip_typeref(expression->base.type);
3673 ir_mode *const mode = get_complex_mode_storage(type);
3674 ir_node *const real = create_conv(dbgi, value.real, mode);
3675 ir_node *const imag = create_conv(dbgi, value.imag, mode);
3677 if (expression->kind == EXPR_REFERENCE) {
3678 const reference_expression_t *ref = &expression->reference;
3680 entity_t *entity = ref->entity;
3681 assert(is_declaration(entity));
3682 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
3683 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE ||
3684 entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
3685 set_value(entity->variable.v.value_number, real);
3686 set_value(entity->variable.v.value_number+1, imag);
3692 addr = expression_to_addr(expression);
3693 assert(addr != NULL);
3694 store_complex(dbgi, addr, type, value);
3697 static complex_value create_complex_assign_unop(const unary_expression_t *unop,
3698 new_complex_unop constructor,
3701 dbg_info *const dbgi = get_dbg_info(&unop->base.pos);
3702 const expression_t *value_expr = unop->value;
3703 ir_node *addr = expression_to_addr(value_expr);
3704 complex_value value = get_complex_from_lvalue(value_expr, addr);
3705 type_t *type = skip_typeref(unop->base.type);
3706 ir_mode *mode = get_complex_mode_arithmetic(type);
3707 value = complex_conv(dbgi, value, mode);
3708 complex_value new_value = constructor(dbgi, value, mode);
3709 set_complex_value_for_expression(dbgi, value_expr, new_value, addr);
3710 return return_old ? value : new_value;
3713 static complex_value complex_negate_to_firm(const unary_expression_t *expr)
3715 complex_value cvalue = expression_to_complex(expr->value);
3716 dbg_info *dbgi = get_dbg_info(&expr->base.pos);
3717 ir_mode *mode = get_complex_mode_arithmetic(expr->base.type);
3718 cvalue = complex_conv(dbgi, cvalue, mode);
3719 return (complex_value) {
3720 new_d_Minus(dbgi, cvalue.real, mode),
3721 new_d_Minus(dbgi, cvalue.imag, mode)
3725 static complex_value complex_complement_to_firm(const unary_expression_t *expr)
3727 complex_value cvalue = expression_to_complex(expr->value);
3728 dbg_info *dbgi = get_dbg_info(&expr->base.pos);
3729 ir_mode *mode = get_complex_mode_arithmetic(expr->base.type);
3730 cvalue = complex_conv(dbgi, cvalue, mode);
3731 return (complex_value) {
3733 new_d_Minus(dbgi, cvalue.imag, mode)
3737 static complex_value create_complex_binop(const binary_expression_t *binexpr,
3738 new_complex_binop constructor)
3740 dbg_info *dbgi = get_dbg_info(&binexpr->base.pos);
3741 ir_mode *mode = get_complex_mode_arithmetic(binexpr->base.type);
3742 complex_value left = expression_to_complex(binexpr->left);
3743 complex_value right = expression_to_complex(binexpr->right);
3744 left = complex_conv(dbgi, left, mode);
3745 right = complex_conv(dbgi, right, mode);
3746 return constructor(dbgi, left, right, mode);
3749 static complex_value create_complex_assign_binop(const binary_expression_t *binexpr,
3750 new_complex_binop constructor)
3752 dbg_info *dbgi = get_dbg_info(&binexpr->base.pos);
3753 expression_t *lefte = binexpr->left;
3754 expression_t *righte = binexpr->right;
3755 ir_mode *mode = get_complex_mode_arithmetic(righte->base.type);
3756 ir_node *addr = expression_to_addr(lefte);
3757 complex_value left = get_complex_from_lvalue(lefte, addr);
3758 complex_value right = expression_to_complex(righte);
3759 left = complex_conv(dbgi, left, mode);
3760 right = complex_conv(dbgi, right, mode);
3761 complex_value new_value = constructor(dbgi, left, right, mode);
3762 type_t *res_type = skip_typeref(binexpr->base.type);
3763 set_complex_value_for_expression(dbgi, lefte, new_value, addr);
3764 return complex_conv_to_storage(dbgi, new_value, res_type);
3767 static complex_value complex_call_to_firm(const call_expression_t *call)
3769 ir_node *result = call_expression_to_firm(call);
3770 expression_t *function = call->function;
3771 type_t *type = skip_typeref(function->base.type);
3772 assert(is_type_pointer(type));
3773 pointer_type_t *pointer_type = &type->pointer;
3774 type_t *points_to = skip_typeref(pointer_type->points_to);
3775 assert(is_type_function(points_to));
3776 function_type_t *function_type = &points_to->function;
3777 type_t *return_type = skip_typeref(function_type->return_type);
3778 assert(is_type_complex(return_type));
3779 dbg_info *dbgi = get_dbg_info(&call->base.pos);
3780 return complex_deref_address(dbgi, return_type, result, cons_floats);
3783 static void complex_equality_evaluation(const binary_expression_t *binexpr,
3784 jump_target *const true_target, jump_target *const false_target,
3785 ir_relation relation)
3787 jump_target extra_target;
3788 init_jump_target(&extra_target, NULL);
3790 complex_value left = expression_to_complex(binexpr->left);
3791 complex_value right = expression_to_complex(binexpr->right);
3792 dbg_info *dbgi = get_dbg_info(&binexpr->base.pos);
3793 ir_mode *mode = get_complex_mode_arithmetic(binexpr->left->base.type);
3794 left = complex_conv(dbgi, left, mode);
3795 right = complex_conv(dbgi, right, mode);
3797 ir_node *cmp_real = new_d_Cmp(dbgi, left.real, right.real, relation);
3798 ir_node *cond = new_d_Cond(dbgi, cmp_real);
3799 ir_node *true_proj = new_Proj(cond, mode_X, pn_Cond_true);
3800 ir_node *false_proj = new_Proj(cond, mode_X, pn_Cond_false);
3801 add_pred_to_jump_target(&extra_target, true_proj);
3802 add_pred_to_jump_target(false_target, false_proj);
3803 if (!enter_jump_target(&extra_target))
3806 ir_node *cmp_imag = new_d_Cmp(dbgi, left.imag, right.imag, relation);
3807 ir_node *condi = new_d_Cond(dbgi, cmp_imag);
3808 ir_node *true_proj_i = new_Proj(condi, mode_X, pn_Cond_true);
3809 ir_node *false_proj_i = new_Proj(condi, mode_X, pn_Cond_false);
3810 add_pred_to_jump_target(true_target, true_proj_i);
3811 add_pred_to_jump_target(false_target, false_proj_i);
3812 set_unreachable_now();
3815 static complex_value complex_to_control_flow(
3816 const expression_t *const expression, jump_target *const true_target,
3817 jump_target *const false_target)
3819 jump_target extra_target;
3820 init_jump_target(&extra_target, NULL);
3821 complex_value value = expression_to_complex(expression);
3822 if (is_Const(value.real) && is_Const(value.imag)) {
3823 ir_tarval *tv_real = get_Const_tarval(value.real);
3824 ir_tarval *tv_imag = get_Const_tarval(value.imag);
3825 if (tarval_is_null(tv_real) && tarval_is_null(tv_imag)) {
3826 jump_to_target(false_target);
3828 jump_to_target(true_target);
3830 set_unreachable_now();
3834 dbg_info *const dbgi = get_dbg_info(&expression->base.pos);
3835 type_t *const type = expression->base.type;
3836 ir_mode *const mode = get_complex_mode_arithmetic(type);
3837 value = complex_conv(dbgi, value, mode);
3838 ir_node *const zero = new_Const(get_mode_null(mode));
3839 ir_node *const cmp_real =
3840 new_d_Cmp(dbgi, value.real, zero, ir_relation_unordered_less_greater);
3841 ir_node *const cond_real = new_d_Cond(dbgi, cmp_real);
3842 ir_node *const true_real = new_Proj(cond_real, mode_X, pn_Cond_true);
3843 ir_node *const false_real = new_Proj(cond_real, mode_X, pn_Cond_false);
3844 add_pred_to_jump_target(true_target, true_real);
3845 add_pred_to_jump_target(&extra_target, false_real);
3846 if (!enter_jump_target(&extra_target))
3849 ir_node *const cmp_imag =
3850 new_d_Cmp(dbgi, value.imag, zero, ir_relation_unordered_less_greater);
3851 ir_node *const cond_imag = new_d_Cond(dbgi, cmp_imag);
3852 ir_node *const true_imag = new_Proj(cond_imag, mode_X, pn_Cond_true);
3853 ir_node *const false_imag = new_Proj(cond_imag, mode_X, pn_Cond_false);
3854 add_pred_to_jump_target(true_target, true_imag);
3855 add_pred_to_jump_target(false_target, false_imag);
3856 set_unreachable_now();
3861 static complex_value complex_conditional_to_firm(
3862 const conditional_expression_t *const expression)
3864 jump_target true_target;
3865 jump_target false_target;
3866 init_jump_target(&true_target, NULL);
3867 init_jump_target(&false_target, NULL);
3868 complex_value cond_val;
3869 memset(&cond_val, 0, sizeof(cond_val));
3870 if (expression->true_expression == NULL) {
3871 assert(is_type_complex(skip_typeref(expression->condition->base.type)));
3872 cond_val = complex_to_control_flow(expression->condition,
3873 &true_target, &false_target);
3875 expression_to_control_flow(expression->condition, &true_target, &false_target);
3879 memset(&val, 0, sizeof(val));
3880 jump_target exit_target;
3881 init_jump_target(&exit_target, NULL);
3882 type_t *const type = skip_typeref(expression->base.type);
3883 ir_mode *const mode = get_complex_mode_arithmetic(type);
3884 dbg_info *const dbgi = get_dbg_info(&expression->base.pos);
3886 if (enter_jump_target(&true_target)) {
3887 if (expression->true_expression) {
3888 val = expression_to_complex(expression->true_expression);
3890 assert(cond_val.real != NULL);
3893 val = complex_conv(dbgi, val, mode);
3894 jump_to_target(&exit_target);
3897 if (enter_jump_target(&false_target)) {
3898 complex_value false_val
3899 = expression_to_complex(expression->false_expression);
3900 false_val = complex_conv(dbgi, false_val, mode);
3901 jump_to_target(&exit_target);
3902 if (val.real != NULL) {
3903 ir_node *const inr[] = { val.real, false_val.real };
3904 ir_node *const ini[] = { val.imag, false_val.imag };
3905 ir_node *const block = exit_target.block;
3906 val.real = new_rd_Phi(dbgi, block, lengthof(inr), inr, mode);
3907 val.imag = new_rd_Phi(dbgi, block, lengthof(ini), ini, mode);
3913 if (!enter_jump_target(&exit_target)) {
3914 set_cur_block(new_Block(0, NULL));
3915 assert(!is_type_void(type));
3916 val.real = val.imag = new_Bad(mode);
3921 static void create_local_declarations(entity_t*);
3923 static complex_value compound_statement_to_firm_complex(
3924 const compound_statement_t *compound)
3926 create_local_declarations(compound->scope.entities);
3928 complex_value result = { NULL, NULL };
3929 statement_t *statement = compound->statements;
3931 for ( ; statement != NULL; statement = next) {
3932 next = statement->base.next;
3933 /* last statement is the return value */
3935 /* it must be an expression, otherwise we wouldn't be in the
3936 * complex variant of compound_statement_to_firm */
3937 if (statement->kind != STATEMENT_EXPRESSION)
3938 panic("last member of complex statement expression not an expression statement");
3939 expression_t *expression = statement->expression.expression;
3940 assert(is_type_complex(skip_typeref(expression->base.type)));
3941 result = expression_to_complex(expression);
3943 statement_to_firm(statement);
3950 static complex_value complex_assign_to_firm(const binary_expression_t *expr)
3952 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
3953 complex_value const value = expression_to_complex(expr->right);
3954 ir_node *const addr = expression_to_addr(expr->left);
3955 set_complex_value_for_expression(dbgi, expr->left, value, addr);
3959 static complex_value complex_statement_expression_to_firm(
3960 const statement_expression_t *const expr)
3962 const statement_t *const statement = expr->statement;
3963 assert(statement->kind == STATEMENT_COMPOUND);
3965 return compound_statement_to_firm_complex(&statement->compound);
3968 static complex_value expression_to_complex(const expression_t *expression)
3970 switch (expression->kind) {
3971 case EXPR_REFERENCE:
3972 return complex_reference_to_firm(&expression->reference);
3974 return complex_select_to_firm(&expression->select);
3975 case EXPR_ARRAY_ACCESS:
3976 return complex_array_access_to_firm(&expression->array_access);
3977 case EXPR_UNARY_CAST:
3978 return complex_cast_to_firm(&expression->unary);
3979 case EXPR_BINARY_COMMA:
3980 evaluate_expression_discard_result(expression->binary.left);
3981 return expression_to_complex(expression->binary.right);
3982 case EXPR_BINARY_ADD:
3983 return create_complex_binop(&expression->binary, new_complex_add);
3984 case EXPR_BINARY_ADD_ASSIGN:
3985 return create_complex_assign_binop(&expression->binary, new_complex_add);
3986 case EXPR_BINARY_SUB:
3987 return create_complex_binop(&expression->binary, new_complex_sub);
3988 case EXPR_BINARY_SUB_ASSIGN:
3989 return create_complex_assign_binop(&expression->binary, new_complex_sub);
3990 case EXPR_BINARY_MUL:
3991 return create_complex_binop(&expression->binary, new_complex_mul);
3992 case EXPR_BINARY_MUL_ASSIGN:
3993 return create_complex_assign_binop(&expression->binary, new_complex_mul);
3994 case EXPR_BINARY_DIV:
3995 return create_complex_binop(&expression->binary, new_complex_div);
3996 case EXPR_BINARY_DIV_ASSIGN:
3997 return create_complex_assign_binop(&expression->binary, new_complex_div);
3998 case EXPR_UNARY_PLUS:
3999 return expression_to_complex(expression->unary.value);
4000 case EXPR_UNARY_PREFIX_INCREMENT:
4001 return create_complex_assign_unop(&expression->unary,
4002 new_complex_increment, false);
4003 case EXPR_UNARY_PREFIX_DECREMENT:
4004 return create_complex_assign_unop(&expression->unary,
4005 new_complex_decrement, false);
4006 case EXPR_UNARY_POSTFIX_INCREMENT:
4007 return create_complex_assign_unop(&expression->unary,
4008 new_complex_increment, true);
4009 case EXPR_UNARY_POSTFIX_DECREMENT:
4010 return create_complex_assign_unop(&expression->unary,
4011 new_complex_decrement, true);
4012 case EXPR_UNARY_NEGATE:
4013 return complex_negate_to_firm(&expression->unary);
4014 case EXPR_UNARY_COMPLEMENT:
4015 return complex_complement_to_firm(&expression->unary);
4016 case EXPR_BINARY_ASSIGN:
4017 return complex_assign_to_firm(&expression->binary);
4018 case EXPR_LITERAL_CASES:
4019 return complex_literal_to_firm(&expression->literal);
4021 return complex_call_to_firm(&expression->call);
4022 case EXPR_CONDITIONAL:
4023 return complex_conditional_to_firm(&expression->conditional);
4024 case EXPR_STATEMENT:
4025 return complex_statement_expression_to_firm(&expression->statement);
4027 panic("unexpected complex expression");
4033 static void create_variable_entity(entity_t *variable,
4034 declaration_kind_t declaration_kind,
4035 ir_type *parent_type)
4037 assert(variable->kind == ENTITY_VARIABLE);
4038 type_t *type = skip_typeref(variable->declaration.type);
4040 ident *const id = new_id_from_str(variable->base.symbol->string);
4041 ir_type *const irtype = get_ir_type(type);
4042 dbg_info *const dbgi = get_dbg_info(&variable->base.pos);
4043 ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi);
4044 unsigned alignment = variable->declaration.alignment;
4046 set_entity_alignment(irentity, alignment);
4048 handle_decl_modifiers(irentity, variable);
4050 variable->declaration.kind = (unsigned char) declaration_kind;
4051 variable->variable.v.entity = irentity;
4052 set_entity_ld_ident(irentity, create_ld_ident(variable));
4054 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4055 set_entity_volatility(irentity, volatility_is_volatile);
4060 typedef struct type_path_entry_t type_path_entry_t;
4061 struct type_path_entry_t {
4063 ir_initializer_t *initializer;
4065 entity_t *compound_entry;
4068 typedef struct type_path_t type_path_t;
4069 struct type_path_t {
4070 type_path_entry_t *path;
4075 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
4077 size_t len = ARR_LEN(path->path);
4079 for (size_t i = 0; i < len; ++i) {
4080 const type_path_entry_t *entry = & path->path[i];
4082 type_t *type = skip_typeref(entry->type);
4083 if (is_type_compound(type)) {
4084 fprintf(stderr, ".%s", entry->compound_entry->base.symbol->string);
4085 } else if (is_type_array(type)) {
4086 fprintf(stderr, "[%u]", (unsigned) entry->index);
4088 fprintf(stderr, "-INVALID-");
4091 fprintf(stderr, " (");
4092 print_type(path->top_type);
4093 fprintf(stderr, ")");
4096 static type_path_entry_t *get_type_path_top(const type_path_t *path)
4098 size_t len = ARR_LEN(path->path);
4100 return & path->path[len-1];
4103 static type_path_entry_t *append_to_type_path(type_path_t *path)
4105 size_t len = ARR_LEN(path->path);
4106 ARR_RESIZE(type_path_entry_t, path->path, len+1);
4108 type_path_entry_t *result = & path->path[len];
4109 memset(result, 0, sizeof(result[0]));
4113 static size_t get_compound_member_count(const compound_type_t *type)
4115 compound_t *compound = type->compound;
4116 size_t n_members = 0;
4117 entity_t *member = compound->members.entities;
4118 for ( ; member != NULL; member = member->base.next) {
4125 static ir_initializer_t *get_initializer_entry(type_path_t *path)
4127 type_t *orig_top_type = path->top_type;
4128 type_t *top_type = skip_typeref(orig_top_type);
4130 assert(is_type_compound(top_type) || is_type_array(top_type));
4132 if (ARR_LEN(path->path) == 0) {
4135 type_path_entry_t *top = get_type_path_top(path);
4136 ir_initializer_t *initializer = top->initializer;
4137 return get_initializer_compound_value(initializer, top->index);
4141 static void descend_into_subtype(type_path_t *path)
4143 type_t *orig_top_type = path->top_type;
4144 type_t *top_type = skip_typeref(orig_top_type);
4146 assert(is_type_compound(top_type) || is_type_array(top_type));
4148 ir_initializer_t *initializer = get_initializer_entry(path);
4150 type_path_entry_t *top = append_to_type_path(path);
4151 top->type = top_type;
4155 if (is_type_compound(top_type)) {
4156 compound_t *const compound = top_type->compound.compound;
4157 entity_t *const entry = skip_unnamed_bitfields(compound->members.entities);
4159 top->compound_entry = entry;
4161 len = get_compound_member_count(&top_type->compound);
4162 if (entry != NULL) {
4163 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
4164 path->top_type = entry->declaration.type;
4167 assert(is_type_array(top_type));
4168 assert(top_type->array.size > 0);
4171 path->top_type = top_type->array.element_type;
4172 len = top_type->array.size;
4174 if (initializer == NULL
4175 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
4176 initializer = create_initializer_compound(len);
4177 /* we have to set the entry at the 2nd latest path entry... */
4178 size_t path_len = ARR_LEN(path->path);
4179 assert(path_len >= 1);
4181 type_path_entry_t *entry = & path->path[path_len-2];
4182 ir_initializer_t *tinitializer = entry->initializer;
4183 set_initializer_compound_value(tinitializer, entry->index,
4187 top->initializer = initializer;
4190 static void ascend_from_subtype(type_path_t *path)
4192 type_path_entry_t *top = get_type_path_top(path);
4194 path->top_type = top->type;
4196 size_t len = ARR_LEN(path->path);
4197 ARR_RESIZE(type_path_entry_t, path->path, len-1);
4200 static void walk_designator(type_path_t *path, const designator_t *designator)
4202 /* designators start at current object type */
4203 ARR_RESIZE(type_path_entry_t, path->path, 1);
4205 for ( ; designator != NULL; designator = designator->next) {
4206 type_path_entry_t *top = get_type_path_top(path);
4207 type_t *orig_type = top->type;
4208 type_t *type = skip_typeref(orig_type);
4210 if (designator->symbol != NULL) {
4211 assert(is_type_compound(type));
4213 symbol_t *symbol = designator->symbol;
4215 compound_t *compound = type->compound.compound;
4216 entity_t *iter = compound->members.entities;
4217 for (; iter->base.symbol != symbol; iter = iter->base.next, ++index) {}
4218 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
4220 /* revert previous initialisations of other union elements */
4221 if (type->kind == TYPE_COMPOUND_UNION) {
4222 ir_initializer_t *initializer = top->initializer;
4223 if (initializer != NULL
4224 && get_initializer_kind(initializer) == IR_INITIALIZER_COMPOUND) {
4225 /* are we writing to a new element? */
4226 ir_initializer_t *oldi
4227 = get_initializer_compound_value(initializer, index);
4228 if (get_initializer_kind(oldi) == IR_INITIALIZER_NULL) {
4229 /* clear initializer */
4231 = get_initializer_compound_n_entries(initializer);
4232 ir_initializer_t *nulli = get_initializer_null();
4233 for (size_t i = 0; i < len; ++i) {
4234 set_initializer_compound_value(initializer, i,
4241 top->type = orig_type;
4242 top->compound_entry = iter;
4244 orig_type = iter->declaration.type;
4246 expression_t *array_index = designator->array_index;
4247 assert(is_type_array(type));
4249 long index = fold_constant_to_int(array_index);
4250 assert(0 <= index && (!type->array.size_constant || (size_t)index < type->array.size));
4252 top->type = orig_type;
4253 top->index = (size_t) index;
4254 orig_type = type->array.element_type;
4256 path->top_type = orig_type;
4258 if (designator->next != NULL) {
4259 descend_into_subtype(path);
4263 path->invalid = false;
4266 static void advance_current_object(type_path_t *path)
4268 if (path->invalid) {
4269 /* TODO: handle this... */
4270 panic("invalid initializer (excessive elements)");
4273 type_path_entry_t *top = get_type_path_top(path);
4275 type_t *type = skip_typeref(top->type);
4276 if (is_type_union(type)) {
4277 /* only the first element is initialized in unions */
4278 top->compound_entry = NULL;
4279 } else if (is_type_struct(type)) {
4280 entity_t *entry = top->compound_entry;
4283 entry = skip_unnamed_bitfields(entry->base.next);
4284 top->compound_entry = entry;
4285 if (entry != NULL) {
4286 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
4287 path->top_type = entry->declaration.type;
4291 assert(is_type_array(type));
4294 if (!type->array.size_constant || top->index < type->array.size) {
4299 /* we're past the last member of the current sub-aggregate, try if we
4300 * can ascend in the type hierarchy and continue with another subobject */
4301 size_t len = ARR_LEN(path->path);
4304 ascend_from_subtype(path);
4305 advance_current_object(path);
4307 path->invalid = true;
4312 static ir_initializer_t *create_ir_initializer_value(
4313 const initializer_value_t *initializer)
4315 expression_t *expr = initializer->value;
4316 type_t *type = skip_typeref(expr->base.type);
4318 if (is_type_compound(type)) {
4319 if (expr->kind == EXPR_UNARY_CAST) {
4320 expr = expr->unary.value;
4321 type = skip_typeref(expr->base.type);
4323 /* must be a compound literal... */
4324 if (expr->kind == EXPR_COMPOUND_LITERAL) {
4325 return create_ir_initializer(expr->compound_literal.initializer,
4328 } else if (is_type_complex(type)) {
4329 complex_value const value = expression_to_complex(expr);
4330 ir_mode *const mode = get_complex_mode_storage(type);
4331 ir_node *const real = create_conv(NULL, value.real, mode);
4332 ir_node *const imag = create_conv(NULL, value.imag, mode);
4333 ir_initializer_t *const res = create_initializer_compound(2);
4334 ir_initializer_t *const init_real = create_initializer_const(real);
4335 ir_initializer_t *const init_imag = create_initializer_const(imag);
4336 set_initializer_compound_value(res, 0, init_real);
4337 set_initializer_compound_value(res, 1, init_imag);
4341 ir_node *value = expression_to_value(expr);
4342 value = conv_to_storage_type(NULL, value, type);
4343 return create_initializer_const(value);
4346 /** Tests whether type can be initialized by a string constant */
4347 static bool is_string_type(type_t *type)
4349 if (!is_type_array(type))
4352 type_t *const inner = skip_typeref(type->array.element_type);
4353 return is_type_integer(inner);
4356 static ir_initializer_t *create_ir_initializer_list(
4357 const initializer_list_t *initializer, type_t *type)
4360 memset(&path, 0, sizeof(path));
4361 path.top_type = type;
4362 path.path = NEW_ARR_F(type_path_entry_t, 0);
4364 descend_into_subtype(&path);
4366 for (size_t i = 0; i < initializer->len; ++i) {
4367 const initializer_t *sub_initializer = initializer->initializers[i];
4369 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
4370 walk_designator(&path, sub_initializer->designator.designator);
4374 if (sub_initializer->kind == INITIALIZER_VALUE) {
4375 const expression_t *expr = sub_initializer->value.value;
4376 const type_t *expr_type = skip_typeref(expr->base.type);
4377 /* we might have to descend into types until the types match */
4379 type_t *orig_top_type = path.top_type;
4380 type_t *top_type = skip_typeref(orig_top_type);
4382 if (types_compatible(top_type, expr_type))
4384 descend_into_subtype(&path);
4386 } else if (sub_initializer->kind == INITIALIZER_STRING) {
4387 /* we might have to descend into types until we're at a scalar
4390 type_t *orig_top_type = path.top_type;
4391 type_t *top_type = skip_typeref(orig_top_type);
4393 if (is_string_type(top_type))
4395 descend_into_subtype(&path);
4399 ir_initializer_t *sub_irinitializer
4400 = create_ir_initializer(sub_initializer, path.top_type);
4402 size_t path_len = ARR_LEN(path.path);
4403 assert(path_len >= 1);
4404 type_path_entry_t *entry = & path.path[path_len-1];
4405 ir_initializer_t *tinitializer = entry->initializer;
4406 set_initializer_compound_value(tinitializer, entry->index,
4409 advance_current_object(&path);
4412 assert(ARR_LEN(path.path) >= 1);
4413 ir_initializer_t *result = path.path[0].initializer;
4414 DEL_ARR_F(path.path);
4419 static ir_initializer_t *create_ir_initializer_string(initializer_t const *const init, type_t *type)
4421 type = skip_typeref(type);
4423 assert(type->kind == TYPE_ARRAY);
4424 assert(type->array.size_constant);
4425 string_literal_expression_t const *const str = get_init_string(init);
4426 size_t const str_len = str->value.size;
4427 size_t const arr_len = type->array.size;
4428 ir_initializer_t *const irinit = create_initializer_compound(arr_len);
4429 ir_mode *const mode = get_ir_mode_storage(type->array.element_type);
4430 char const * p = str->value.begin;
4431 switch (str->value.encoding) {
4432 case STRING_ENCODING_CHAR:
4433 case STRING_ENCODING_UTF8:
4434 for (size_t i = 0; i != arr_len; ++i) {
4435 char const c = i < str_len ? *p++ : 0;
4436 ir_tarval *const tv = new_tarval_from_long(c, mode);
4437 ir_initializer_t *const tvinit = create_initializer_tarval(tv);
4438 set_initializer_compound_value(irinit, i, tvinit);
4442 case STRING_ENCODING_CHAR16:
4443 case STRING_ENCODING_CHAR32:
4444 case STRING_ENCODING_WIDE:
4445 for (size_t i = 0; i != arr_len; ++i) {
4446 utf32 const c = i < str_len ? read_utf8_char(&p) : 0;
4447 ir_tarval *const tv = new_tarval_from_long(c, mode);
4448 ir_initializer_t *const tvinit = create_initializer_tarval(tv);
4449 set_initializer_compound_value(irinit, i, tvinit);
4457 static ir_initializer_t *create_ir_initializer(
4458 const initializer_t *initializer, type_t *type)
4460 switch (initializer->kind) {
4461 case INITIALIZER_STRING:
4462 return create_ir_initializer_string(initializer, type);
4464 case INITIALIZER_LIST:
4465 return create_ir_initializer_list(&initializer->list, type);
4467 case INITIALIZER_VALUE:
4468 return create_ir_initializer_value(&initializer->value);
4470 case INITIALIZER_DESIGNATOR:
4471 panic("unexpected designator initializer");
4473 panic("unknown initializer");
4476 /** ANSI C ยง6.7.8:21: If there are fewer initializers [..] than there
4477 * are elements [...] the remainder of the aggregate shall be initialized
4478 * implicitly the same as objects that have static storage duration. */
4479 static void create_dynamic_null_initializer(ir_entity *entity, dbg_info *dbgi,
4482 /* for unions we must NOT do anything for null initializers */
4483 ir_type *owner = get_entity_owner(entity);
4484 if (is_Union_type(owner)) {
4488 ir_type *ent_type = get_entity_type(entity);
4489 /* create sub-initializers for a compound type */
4490 if (is_compound_type(ent_type)) {
4491 unsigned n_members = get_compound_n_members(ent_type);
4492 for (unsigned n = 0; n < n_members; ++n) {
4493 ir_entity *member = get_compound_member(ent_type, n);
4494 ir_node *addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
4496 create_dynamic_null_initializer(member, dbgi, addr);
4500 if (is_Array_type(ent_type)) {
4501 assert(has_array_upper_bound(ent_type, 0));
4502 long n = get_array_upper_bound_int(ent_type, 0);
4503 for (long i = 0; i < n; ++i) {
4504 ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
4505 ir_tarval *index_tv = new_tarval_from_long(i, mode_uint);
4506 ir_node *cnst = new_d_Const(dbgi, index_tv);
4507 ir_node *in[1] = { cnst };
4508 ir_entity *arrent = get_array_element_entity(ent_type);
4509 ir_node *addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
4511 create_dynamic_null_initializer(arrent, dbgi, addr);
4516 ir_mode *value_mode = get_type_mode(ent_type);
4517 ir_node *node = new_Const(get_mode_null(value_mode));
4519 /* is it a bitfield type? */
4520 if (is_Primitive_type(ent_type) &&
4521 get_primitive_base_type(ent_type) != NULL) {
4522 bitfield_store_to_firm(dbgi, entity, base_addr, node, false, false);
4526 ir_node *mem = get_store();
4527 ir_node *store = new_d_Store(dbgi, mem, base_addr, node, cons_none);
4528 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4532 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
4533 ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr)
4535 switch (get_initializer_kind(initializer)) {
4536 case IR_INITIALIZER_NULL:
4537 create_dynamic_null_initializer(entity, dbgi, base_addr);
4539 case IR_INITIALIZER_CONST: {
4540 ir_node *node = get_initializer_const_value(initializer);
4541 ir_type *ent_type = get_entity_type(entity);
4543 /* is it a bitfield type? */
4544 if (is_Primitive_type(ent_type) &&
4545 get_primitive_base_type(ent_type) != NULL) {
4546 bitfield_store_to_firm(dbgi, entity, base_addr, node, false, false);
4550 ir_node *mem = get_store();
4552 if (is_compound_type(ent_type)) {
4553 ir_node *copyb = new_d_CopyB(dbgi, mem, base_addr, node, ent_type);
4554 new_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
4556 assert(get_type_mode(type) == get_irn_mode(node));
4557 ir_node *store = new_d_Store(dbgi, mem, base_addr, node, cons_none);
4558 new_mem = new_Proj(store, mode_M, pn_Store_M);
4563 case IR_INITIALIZER_TARVAL: {
4564 ir_tarval *tv = get_initializer_tarval_value(initializer);
4565 ir_node *cnst = new_d_Const(dbgi, tv);
4566 ir_type *ent_type = get_entity_type(entity);
4568 /* is it a bitfield type? */
4569 if (is_Primitive_type(ent_type) &&
4570 get_primitive_base_type(ent_type) != NULL) {
4571 bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false, false);
4575 assert(get_type_mode(type) == get_tarval_mode(tv));
4576 ir_node *mem = get_store();
4577 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst, cons_none);
4578 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4582 case IR_INITIALIZER_COMPOUND: {
4583 assert(is_compound_type(type) || is_Array_type(type));
4585 if (is_Array_type(type)) {
4586 assert(has_array_upper_bound(type, 0));
4587 n_members = get_array_upper_bound_int(type, 0);
4589 n_members = get_compound_n_members(type);
4592 if (get_initializer_compound_n_entries(initializer)
4593 != (unsigned) n_members)
4594 panic("initializer doesn't match compound type");
4596 for (int i = 0; i < n_members; ++i) {
4599 ir_entity *sub_entity;
4600 if (is_Array_type(type)) {
4601 ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
4602 ir_tarval *index_tv = new_tarval_from_long(i, mode_uint);
4603 ir_node *cnst = new_d_Const(dbgi, index_tv);
4604 ir_node *in[1] = { cnst };
4605 irtype = get_array_element_type(type);
4606 sub_entity = get_array_element_entity(type);
4607 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
4610 sub_entity = get_compound_member(type, i);
4611 irtype = get_entity_type(sub_entity);
4612 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
4616 ir_initializer_t *sub_init
4617 = get_initializer_compound_value(initializer, i);
4619 create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
4626 panic("invalid ir_initializer");
4629 static void create_dynamic_initializer(ir_initializer_t *initializer,
4630 dbg_info *dbgi, ir_entity *entity)
4632 ir_node *frame = get_irg_frame(current_ir_graph);
4633 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
4634 ir_type *type = get_entity_type(entity);
4636 create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
4639 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
4640 ir_entity *entity, type_t *type)
4642 ir_node *memory = get_store();
4643 ir_node *nomem = new_NoMem();
4644 ir_node *frame = get_irg_frame(current_ir_graph);
4645 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
4647 if (initializer->kind == INITIALIZER_VALUE) {
4648 initializer_value_t *initializer_value = &initializer->value;
4650 ir_node *value = expression_to_value(initializer_value->value);
4651 type = skip_typeref(type);
4652 assign_value(dbgi, addr, type, value);
4656 if (is_constant_initializer(initializer) == EXPR_CLASS_VARIABLE) {
4657 ir_initializer_t *irinitializer
4658 = create_ir_initializer(initializer, type);
4660 create_dynamic_initializer(irinitializer, dbgi, entity);
4664 /* create a "template" entity which is copied to the entity on the stack */
4665 ir_entity *const init_entity
4666 = create_initializer_entity(dbgi, initializer, type);
4667 ir_node *const src_addr = create_symconst(dbgi, init_entity);
4668 ir_type *const irtype = get_ir_type(type);
4669 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
4671 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
4672 set_store(copyb_mem);
4675 static void create_initializer_local_variable_entity(entity_t *entity)
4677 assert(entity->kind == ENTITY_VARIABLE);
4678 initializer_t *initializer = entity->variable.initializer;
4679 dbg_info *dbgi = get_dbg_info(&entity->base.pos);
4680 ir_entity *irentity = entity->variable.v.entity;
4681 type_t *type = entity->declaration.type;
4683 create_local_initializer(initializer, dbgi, irentity, type);
4686 static void create_variable_initializer(entity_t *entity)
4688 assert(entity->kind == ENTITY_VARIABLE);
4689 initializer_t *initializer = entity->variable.initializer;
4690 if (initializer == NULL)
4693 declaration_kind_t declaration_kind
4694 = (declaration_kind_t) entity->declaration.kind;
4695 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
4696 create_initializer_local_variable_entity(entity);
4700 type_t *type = entity->declaration.type;
4701 type_qualifiers_t tq = get_type_qualifier(type, true);
4703 if (initializer->kind == INITIALIZER_VALUE) {
4704 expression_t * value = initializer->value.value;
4705 type_t *const init_type = skip_typeref(value->base.type);
4707 if (is_type_complex(init_type)) {
4708 complex_value nodes = expression_to_complex(value);
4709 dbg_info *dbgi = get_dbg_info(&entity->base.pos);
4710 ir_mode *mode = get_complex_mode_storage(init_type);
4711 ir_node *real = create_conv(dbgi, nodes.real, mode);
4712 ir_node *imag = create_conv(dbgi, nodes.imag, mode);
4713 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
4714 set_value(entity->variable.v.value_number, real);
4715 set_value(entity->variable.v.value_number+1, imag);
4717 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4718 ir_entity *irentity = entity->variable.v.entity;
4719 if (tq & TYPE_QUALIFIER_CONST
4720 && get_entity_owner(irentity) != get_tls_type()) {
4721 add_entity_linkage(irentity, IR_LINKAGE_CONSTANT);
4723 ir_initializer_t *complex_init = create_initializer_compound(2);
4724 ir_initializer_t *reali = create_initializer_const(real);
4725 set_initializer_compound_value(complex_init, 0, reali);
4726 ir_initializer_t *imagi = create_initializer_const(imag);
4727 set_initializer_compound_value(complex_init, 1, imagi);
4728 set_entity_initializer(irentity, complex_init);
4731 } else if (!is_type_scalar(init_type)) {
4732 if (value->kind != EXPR_COMPOUND_LITERAL)
4733 panic("expected non-scalar initializer to be a compound literal");
4734 initializer = value->compound_literal.initializer;
4735 goto have_initializer;
4738 ir_node * node = expression_to_value(value);
4739 dbg_info *const dbgi = get_dbg_info(&entity->base.pos);
4740 node = conv_to_storage_type(dbgi, node, init_type);
4742 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
4743 set_value(entity->variable.v.value_number, node);
4745 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4747 ir_entity *irentity = entity->variable.v.entity;
4749 if (tq & TYPE_QUALIFIER_CONST
4750 && get_entity_owner(irentity) != get_tls_type()) {
4751 add_entity_linkage(irentity, IR_LINKAGE_CONSTANT);
4753 set_atomic_ent_value(irentity, node);
4757 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
4758 declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4760 ir_entity *irentity = entity->variable.v.entity;
4761 ir_initializer_t *irinitializer
4762 = create_ir_initializer(initializer, type);
4764 if (tq & TYPE_QUALIFIER_CONST) {
4765 add_entity_linkage(irentity, IR_LINKAGE_CONSTANT);
4767 set_entity_initializer(irentity, irinitializer);
4771 static void create_variable_length_array(entity_t *entity)
4773 assert(entity->kind == ENTITY_VARIABLE);
4774 assert(entity->variable.initializer == NULL);
4776 entity->declaration.kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
4777 entity->variable.v.vla_base = NULL;
4779 /* TODO: record VLA somewhere so we create the free node when we leave
4783 static void allocate_variable_length_array(entity_t *entity)
4785 assert(entity->kind == ENTITY_VARIABLE);
4786 assert(entity->variable.initializer == NULL);
4787 assert(currently_reachable());
4789 dbg_info *dbgi = get_dbg_info(&entity->base.pos);
4790 type_t *type = entity->declaration.type;
4791 ir_type *el_type = get_ir_type(type->array.element_type);
4793 /* make sure size_node is calculated */
4794 get_type_size_node(type);
4795 ir_node *elems = type->array.size_node;
4796 ir_node *mem = get_store();
4797 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
4799 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
4800 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
4803 assert(entity->declaration.kind == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
4804 entity->variable.v.vla_base = addr;
4807 static bool var_needs_entity(variable_t const *const var)
4809 if (var->address_taken)
4811 type_t *const type = skip_typeref(var->base.type);
4812 return (!is_type_scalar(type) && !is_type_complex(type))
4813 || type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
4817 * Creates a Firm local variable from a declaration.
4819 static void create_local_variable(entity_t *entity)
4821 assert(entity->kind == ENTITY_VARIABLE);
4822 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4824 if (!var_needs_entity(&entity->variable)) {
4825 entity->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
4826 entity->variable.v.value_number = next_value_number_function;
4827 set_irg_loc_description(current_ir_graph, next_value_number_function, entity);
4828 ++next_value_number_function;
4829 if (is_type_complex(skip_typeref(entity->declaration.type)))
4830 ++next_value_number_function;
4834 /* is it a variable length array? */
4835 type_t *const type = skip_typeref(entity->declaration.type);
4836 if (is_type_array(type) && !type->array.size_constant) {
4837 create_variable_length_array(entity);
4841 ir_type *const frame_type = get_irg_frame_type(current_ir_graph);
4842 create_variable_entity(entity, DECLARATION_KIND_LOCAL_VARIABLE_ENTITY, frame_type);
4845 static void create_local_static_variable(entity_t *entity)
4847 assert(entity->kind == ENTITY_VARIABLE);
4848 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4850 type_t *type = skip_typeref(entity->declaration.type);
4851 ir_type *const var_type = entity->variable.thread_local ?
4852 get_tls_type() : get_glob_type();
4853 ir_type *const irtype = get_ir_type(type);
4854 dbg_info *const dbgi = get_dbg_info(&entity->base.pos);
4856 size_t l = strlen(entity->base.symbol->string);
4857 char buf[l + sizeof(".%u")];
4858 snprintf(buf, sizeof(buf), "%s.%%u", entity->base.symbol->string);
4859 ident *const id = id_unique(buf);
4860 ir_entity *const irentity = new_d_entity(var_type, id, irtype, dbgi);
4862 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4863 set_entity_volatility(irentity, volatility_is_volatile);
4866 entity->declaration.kind = DECLARATION_KIND_GLOBAL_VARIABLE;
4867 entity->variable.v.entity = irentity;
4869 set_entity_ld_ident(irentity, id);
4870 set_entity_visibility(irentity, ir_visibility_local);
4872 if (entity->variable.initializer == NULL) {
4873 ir_initializer_t *null_init = get_initializer_null();
4874 set_entity_initializer(irentity, null_init);
4877 PUSH_IRG(get_const_code_irg());
4878 create_variable_initializer(entity);
4882 static ir_node *return_statement_to_firm(return_statement_t *statement)
4884 if (!currently_reachable())
4887 dbg_info *const dbgi = get_dbg_info(&statement->base.pos);
4888 type_t *const type = skip_typeref(current_function_entity->declaration.type->function.return_type);
4892 if (is_type_void(type)) {
4893 /* just create the side effects, don't return anything */
4894 if (statement->value)
4895 evaluate_expression_discard_result(statement->value);
4898 } else if (is_type_complex(type)) {
4899 if (statement->value) {
4900 complex_value value = expression_to_complex(statement->value);
4901 in[0] = complex_to_memory(dbgi, type, value);
4903 in[0] = new_Unknown(mode_P_data);
4907 ir_mode *const mode = get_ir_mode_storage(type);
4908 if (statement->value) {
4909 ir_node *value = expression_to_value(statement->value);
4910 value = conv_to_storage_type(dbgi, value, type);
4911 in[0] = create_conv(dbgi, value, mode);
4913 in[0] = new_Unknown(mode);
4918 ir_node *const store = get_store();
4919 ir_node *const ret = new_d_Return(dbgi, store, in_len, in);
4921 ir_node *end_block = get_irg_end_block(current_ir_graph);
4922 add_immBlock_pred(end_block, ret);
4924 set_unreachable_now();
4928 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
4930 if (!currently_reachable())
4933 expression_t *expression = statement->expression;
4934 type_t *type = skip_typeref(expression->base.type);
4935 if (is_type_complex(type)) {
4936 expression_to_complex(expression);
4939 return expression_to_value(statement->expression);
4943 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
4945 create_local_declarations(compound->scope.entities);
4947 ir_node *result = NULL;
4948 statement_t *statement = compound->statements;
4949 for ( ; statement != NULL; statement = statement->base.next) {
4950 result = statement_to_firm(statement);
4956 static void create_global_variable(entity_t *entity)
4958 ir_linkage linkage = IR_LINKAGE_DEFAULT;
4959 ir_visibility visibility = ir_visibility_external;
4960 storage_class_tag_t storage
4961 = (storage_class_tag_t)entity->declaration.storage_class;
4962 decl_modifiers_t modifiers = entity->declaration.modifiers;
4963 assert(entity->kind == ENTITY_VARIABLE);
4966 case STORAGE_CLASS_EXTERN: visibility = ir_visibility_external; break;
4967 case STORAGE_CLASS_STATIC: visibility = ir_visibility_local; break;
4968 case STORAGE_CLASS_NONE: visibility = ir_visibility_external; break;
4969 case STORAGE_CLASS_TYPEDEF:
4970 case STORAGE_CLASS_AUTO:
4971 case STORAGE_CLASS_REGISTER:
4972 panic("invalid storage class for global var");
4975 /* "common" symbols */
4976 if (storage == STORAGE_CLASS_NONE
4977 && entity->variable.initializer == NULL
4978 && !entity->variable.thread_local
4979 && (modifiers & DM_WEAK) == 0) {
4980 linkage |= IR_LINKAGE_MERGE;
4983 ir_type *var_type = get_glob_type();
4984 if (entity->variable.thread_local) {
4985 var_type = get_tls_type();
4987 create_variable_entity(entity, DECLARATION_KIND_GLOBAL_VARIABLE, var_type);
4988 ir_entity *irentity = entity->variable.v.entity;
4989 add_entity_linkage(irentity, linkage);
4990 set_entity_visibility(irentity, visibility);
4991 if (entity->variable.initializer == NULL
4992 && storage != STORAGE_CLASS_EXTERN) {
4993 ir_initializer_t *null_init = get_initializer_null();
4994 set_entity_initializer(irentity, null_init);
4998 static void create_local_declaration(entity_t *entity)
5000 assert(is_declaration(entity));
5002 /* construct type */
5003 (void) get_ir_type(entity->declaration.type);
5004 if (entity->base.symbol == NULL) {
5008 switch ((storage_class_tag_t) entity->declaration.storage_class) {
5009 case STORAGE_CLASS_STATIC:
5010 if (entity->kind == ENTITY_FUNCTION) {
5011 (void)get_function_entity(entity, NULL);
5013 create_local_static_variable(entity);
5016 case STORAGE_CLASS_EXTERN:
5017 if (entity->kind == ENTITY_FUNCTION) {
5018 assert(entity->function.body == NULL);
5019 (void)get_function_entity(entity, NULL);
5021 create_global_variable(entity);
5022 create_variable_initializer(entity);
5025 case STORAGE_CLASS_NONE:
5026 case STORAGE_CLASS_AUTO:
5027 case STORAGE_CLASS_REGISTER:
5028 if (entity->kind == ENTITY_FUNCTION) {
5029 if (entity->function.body != NULL) {
5030 ir_type *owner = get_irg_frame_type(current_ir_graph);
5031 (void)get_function_entity(entity, owner);
5032 entity->declaration.kind = DECLARATION_KIND_INNER_FUNCTION;
5033 enqueue_inner_function(entity);
5035 (void)get_function_entity(entity, NULL);
5038 create_local_variable(entity);
5041 case STORAGE_CLASS_TYPEDEF:
5044 panic("invalid storage class");
5047 static void create_local_declarations(entity_t *e)
5049 for (; e; e = e->base.next) {
5050 if (is_declaration(e))
5051 create_local_declaration(e);
5055 static void initialize_local_declaration(entity_t *entity)
5057 if (entity->base.symbol == NULL)
5060 // no need to emit code in dead blocks
5061 if (entity->declaration.storage_class != STORAGE_CLASS_STATIC
5062 && !currently_reachable())
5065 switch ((declaration_kind_t) entity->declaration.kind) {
5066 case DECLARATION_KIND_LOCAL_VARIABLE:
5067 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
5068 create_variable_initializer(entity);
5071 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
5072 allocate_variable_length_array(entity);
5075 case DECLARATION_KIND_COMPOUND_MEMBER:
5076 case DECLARATION_KIND_GLOBAL_VARIABLE:
5077 case DECLARATION_KIND_FUNCTION:
5078 case DECLARATION_KIND_INNER_FUNCTION:
5081 case DECLARATION_KIND_PARAMETER:
5082 case DECLARATION_KIND_PARAMETER_ENTITY:
5083 panic("can't initialize parameters");
5085 case DECLARATION_KIND_UNKNOWN:
5086 panic("can't initialize unknown declaration");
5088 panic("invalid declaration kind");
5091 static ir_node *declaration_statement_to_firm(declaration_statement_t *statement)
5093 entity_t *entity = statement->declarations_begin;
5097 entity_t *const last = statement->declarations_end;
5098 for ( ;; entity = entity->base.next) {
5099 if (is_declaration(entity)) {
5100 initialize_local_declaration(entity);
5101 } else if (entity->kind == ENTITY_TYPEDEF) {
5102 /* ยง6.7.7:3 Any array size expressions associated with variable length
5103 * array declarators are evaluated each time the declaration of the
5104 * typedef name is reached in the order of execution. */
5105 type_t *const type = skip_typeref(entity->typedefe.type);
5106 if (is_type_array(type) && type->array.is_vla)
5107 get_vla_size(&type->array);
5116 static ir_node *if_statement_to_firm(if_statement_t *statement)
5118 create_local_declarations(statement->scope.entities);
5120 /* Create the condition. */
5121 jump_target true_target;
5122 jump_target false_target;
5123 init_jump_target(&true_target, NULL);
5124 init_jump_target(&false_target, NULL);
5125 if (currently_reachable())
5126 expression_to_control_flow(statement->condition, &true_target, &false_target);
5128 jump_target exit_target;
5129 init_jump_target(&exit_target, NULL);
5131 /* Create the true statement. */
5132 enter_jump_target(&true_target);
5133 statement_to_firm(statement->true_statement);
5134 jump_to_target(&exit_target);
5136 /* Create the false statement. */
5137 enter_jump_target(&false_target);
5138 if (statement->false_statement)
5139 statement_to_firm(statement->false_statement);
5140 jump_to_target(&exit_target);
5142 enter_jump_target(&exit_target);
5146 static ir_node *do_while_statement_to_firm(do_while_statement_t *statement)
5148 create_local_declarations(statement->scope.entities);
5151 PUSH_CONTINUE(NULL);
5153 expression_t *const cond = statement->condition;
5154 /* Avoid an explicit body block in case of do ... while (0);. */
5155 if (is_constant_expression(cond) == EXPR_CLASS_CONSTANT && !fold_constant_to_bool(cond)) {
5156 /* do ... while (0);. */
5157 statement_to_firm(statement->body);
5158 jump_to_target(&continue_target);
5159 enter_jump_target(&continue_target);
5160 jump_to_target(&break_target);
5162 jump_target body_target;
5163 init_jump_target(&body_target, NULL);
5164 jump_to_target(&body_target);
5165 enter_immature_jump_target(&body_target);
5167 statement_to_firm(statement->body);
5168 jump_to_target(&continue_target);
5169 if (enter_jump_target(&continue_target))
5170 expression_to_control_flow(statement->condition, &body_target, &break_target);
5171 enter_jump_target(&body_target);
5173 enter_jump_target(&break_target);
5180 static ir_node *for_statement_to_firm(for_statement_t *statement)
5182 create_local_declarations(statement->scope.entities);
5184 if (currently_reachable()) {
5185 entity_t *entity = statement->scope.entities;
5186 for ( ; entity != NULL; entity = entity->base.next) {
5187 if (!is_declaration(entity))
5190 initialize_local_declaration(entity);
5193 if (statement->initialisation != NULL) {
5194 expression_to_value(statement->initialisation);
5198 /* Create the header block */
5199 jump_target header_target;
5200 init_jump_target(&header_target, NULL);
5201 jump_to_target(&header_target);
5202 enter_immature_jump_target(&header_target);
5205 expression_t *const step = statement->step;
5207 PUSH_CONTINUE(step ? NULL : header_target.block);
5209 /* Create the condition. */
5210 expression_t *const cond = statement->condition;
5211 if (cond && (is_constant_expression(cond) != EXPR_CLASS_CONSTANT || !fold_constant_to_bool(cond))) {
5212 jump_target body_target;
5213 init_jump_target(&body_target, NULL);
5214 expression_to_control_flow(cond, &body_target, &break_target);
5215 enter_jump_target(&body_target);
5218 /* Create the loop body. */
5219 statement_to_firm(statement->body);
5220 jump_to_target(&continue_target);
5222 /* Create the step code. */
5223 if (step && enter_jump_target(&continue_target)) {
5224 expression_to_value(step);
5225 jump_to_target(&header_target);
5228 enter_jump_target(&header_target);
5229 enter_jump_target(&break_target);
5236 static ir_switch_table *create_switch_table(const switch_statement_t *statement)
5238 /* determine number of cases */
5240 for (case_label_statement_t *l = statement->first_case; l != NULL;
5243 if (l->expression == NULL)
5245 if (l->is_empty_range)
5250 ir_switch_table *res = ir_new_switch_table(current_ir_graph, n_cases);
5252 for (case_label_statement_t *l = statement->first_case; l != NULL;
5254 if (l->expression == NULL) {
5255 l->pn = pn_Switch_default;
5258 if (l->is_empty_range)
5260 ir_tarval *min = l->first_case;
5261 ir_tarval *max = l->last_case;
5262 long pn = (long) i+1;
5263 ir_switch_table_set(res, i++, min, max, pn);
5269 static ir_node *switch_statement_to_firm(switch_statement_t *statement)
5271 dbg_info *dbgi = get_dbg_info(&statement->base.pos);
5272 ir_node *switch_node = NULL;
5274 if (currently_reachable()) {
5275 ir_node *expression = expression_to_value(statement->expression);
5276 ir_switch_table *table = create_switch_table(statement);
5277 unsigned n_outs = (unsigned)ir_switch_table_get_n_entries(table) + 1;
5279 switch_node = new_d_Switch(dbgi, expression, n_outs, table);
5282 set_unreachable_now();
5285 ir_node *const old_switch = current_switch;
5286 const bool old_saw_default_label = saw_default_label;
5287 saw_default_label = false;
5288 current_switch = switch_node;
5290 statement_to_firm(statement->body);
5291 jump_to_target(&break_target);
5293 if (!saw_default_label && switch_node) {
5294 ir_node *proj = new_d_Proj(dbgi, switch_node, mode_X, pn_Switch_default);
5295 add_pred_to_jump_target(&break_target, proj);
5298 enter_jump_target(&break_target);
5300 assert(current_switch == switch_node);
5301 current_switch = old_switch;
5302 saw_default_label = old_saw_default_label;
5307 static ir_node *case_label_to_firm(const case_label_statement_t *statement)
5309 if (current_switch != NULL && !statement->is_empty_range) {
5310 jump_target case_target;
5311 init_jump_target(&case_target, NULL);
5313 /* Fallthrough from previous case */
5314 jump_to_target(&case_target);
5316 ir_node *const proj = new_Proj(current_switch, mode_X, statement->pn);
5317 add_pred_to_jump_target(&case_target, proj);
5318 if (statement->expression == NULL)
5319 saw_default_label = true;
5321 enter_jump_target(&case_target);
5324 return statement_to_firm(statement->statement);
5327 static ir_node *label_to_firm(const label_statement_t *statement)
5329 label_t *const label = statement->label;
5330 prepare_label_target(label);
5331 jump_to_target(&label->target);
5332 if (--label->n_users == 0) {
5333 enter_jump_target(&label->target);
5335 enter_immature_jump_target(&label->target);
5339 return statement_to_firm(statement->statement);
5342 static ir_node *goto_statement_to_firm(goto_statement_t *const stmt)
5344 label_t *const label = stmt->label;
5345 prepare_label_target(label);
5346 jump_to_target(&label->target);
5347 if (--label->n_users == 0)
5348 enter_jump_target(&label->target);
5349 set_unreachable_now();
5353 static ir_node *computed_goto_to_firm(computed_goto_statement_t const *const statement)
5355 if (currently_reachable()) {
5356 ir_node *const op = expression_to_value(statement->expression);
5357 ARR_APP1(ir_node*, ijmp_ops, op);
5358 jump_to_target(&ijmp_target);
5359 set_unreachable_now();
5364 static ir_node *asm_statement_to_firm(const asm_statement_t *statement)
5366 bool needs_memory = statement->is_volatile;
5367 size_t n_clobbers = 0;
5368 asm_clobber_t *clobber = statement->clobbers;
5369 for ( ; clobber != NULL; clobber = clobber->next) {
5370 const char *clobber_str = clobber->clobber.begin;
5372 if (!be_is_valid_clobber(clobber_str)) {
5373 errorf(&statement->base.pos,
5374 "invalid clobber '%s' specified", clobber->clobber);
5378 if (streq(clobber_str, "memory")) {
5379 needs_memory = true;
5383 ident *id = new_id_from_str(clobber_str);
5384 obstack_ptr_grow(&asm_obst, id);
5387 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
5388 ident **clobbers = NULL;
5389 if (n_clobbers > 0) {
5390 clobbers = obstack_finish(&asm_obst);
5393 size_t n_inputs = 0;
5394 asm_argument_t *argument = statement->inputs;
5395 for ( ; argument != NULL; argument = argument->next)
5397 size_t n_outputs = 0;
5398 argument = statement->outputs;
5399 for ( ; argument != NULL; argument = argument->next)
5402 unsigned next_pos = 0;
5404 ir_node *ins[n_inputs + n_outputs + 1];
5407 ir_asm_constraint tmp_in_constraints[n_outputs];
5409 const expression_t *out_exprs[n_outputs];
5410 ir_node *out_addrs[n_outputs];
5411 size_t out_size = 0;
5413 argument = statement->outputs;
5414 for ( ; argument != NULL; argument = argument->next) {
5415 const char *constraints = argument->constraints.begin;
5416 asm_constraint_flags_t asm_flags
5417 = be_parse_asm_constraints(constraints);
5420 position_t const *const pos = &statement->base.pos;
5421 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5422 warningf(WARN_OTHER, pos, "some constraints in '%s' are not supported", constraints);
5424 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5425 errorf(pos, "some constraints in '%s' are invalid", constraints);
5428 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
5429 errorf(pos, "no write flag specified for output constraints '%s'", constraints);
5434 unsigned pos = next_pos++;
5435 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5436 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5437 expression_t *expr = argument->expression;
5438 ir_node *addr = expression_to_addr(expr);
5439 /* in+output, construct an artifical same_as constraint on the
5441 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
5443 ir_node *value = get_value_from_lvalue(expr, addr);
5445 snprintf(buf, sizeof(buf), "%u", (unsigned) out_size);
5447 ir_asm_constraint constraint;
5448 constraint.pos = pos;
5449 constraint.constraint = new_id_from_str(buf);
5450 constraint.mode = get_ir_mode_storage(expr->base.type);
5451 tmp_in_constraints[in_size] = constraint;
5452 ins[in_size] = value;
5457 out_exprs[out_size] = expr;
5458 out_addrs[out_size] = addr;
5460 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5461 /* pure memory ops need no input (but we have to make sure we
5462 * attach to the memory) */
5463 assert(! (asm_flags &
5464 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5465 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5466 needs_memory = true;
5468 /* we need to attach the address to the inputs */
5469 expression_t *expr = argument->expression;
5471 ir_asm_constraint constraint;
5472 constraint.pos = pos;
5473 constraint.constraint = new_id_from_str(constraints);
5474 constraint.mode = mode_M;
5475 tmp_in_constraints[in_size] = constraint;
5477 ins[in_size] = expression_to_addr(expr);
5481 errorf(&statement->base.pos,
5482 "only modifiers but no place set in constraints '%s'",
5487 ir_asm_constraint constraint;
5488 constraint.pos = pos;
5489 constraint.constraint = new_id_from_str(constraints);
5490 constraint.mode = get_ir_mode_storage(argument->expression->base.type);
5492 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5494 assert(obstack_object_size(&asm_obst)
5495 == out_size * sizeof(ir_asm_constraint));
5496 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
5499 obstack_grow(&asm_obst, tmp_in_constraints,
5500 in_size * sizeof(tmp_in_constraints[0]));
5501 /* find and count input and output arguments */
5502 argument = statement->inputs;
5503 for ( ; argument != NULL; argument = argument->next) {
5504 const char *constraints = argument->constraints.begin;
5505 asm_constraint_flags_t asm_flags
5506 = be_parse_asm_constraints(constraints);
5508 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5509 errorf(&statement->base.pos,
5510 "some constraints in '%s' are not supported", constraints);
5513 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5514 errorf(&statement->base.pos,
5515 "some constraints in '%s' are invalid", constraints);
5518 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
5519 errorf(&statement->base.pos,
5520 "write flag specified for input constraints '%s'",
5526 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5527 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5528 /* we can treat this as "normal" input */
5529 input = expression_to_value(argument->expression);
5530 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5531 /* pure memory ops need no input (but we have to make sure we
5532 * attach to the memory) */
5533 assert(! (asm_flags &
5534 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5535 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5536 needs_memory = true;
5537 input = expression_to_addr(argument->expression);
5539 errorf(&statement->base.pos,
5540 "only modifiers but no place set in constraints '%s'",
5545 ir_asm_constraint constraint;
5546 constraint.pos = next_pos++;
5547 constraint.constraint = new_id_from_str(constraints);
5548 constraint.mode = get_irn_mode(input);
5550 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5551 ins[in_size++] = input;
5554 ir_node *mem = needs_memory ? get_store() : new_NoMem();
5555 assert(obstack_object_size(&asm_obst)
5556 == in_size * sizeof(ir_asm_constraint));
5557 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
5559 /* create asm node */
5560 dbg_info *dbgi = get_dbg_info(&statement->base.pos);
5562 ident *asm_text = new_id_from_str(statement->asm_text.begin);
5564 ir_node *node = new_d_ASM(dbgi, mem, in_size, ins, input_constraints,
5565 out_size, output_constraints,
5566 n_clobbers, clobbers, asm_text);
5568 if (statement->is_volatile) {
5569 set_irn_pinned(node, op_pin_state_pinned);
5571 set_irn_pinned(node, op_pin_state_floats);
5574 /* create output projs & connect them */
5576 ir_node *projm = new_Proj(node, mode_M, out_size);
5581 for (i = 0; i < out_size; ++i) {
5582 const expression_t *out_expr = out_exprs[i];
5584 ir_mode *mode = get_ir_mode_storage(out_expr->base.type);
5585 ir_node *proj = new_Proj(node, mode, pn);
5586 ir_node *addr = out_addrs[i];
5588 set_value_for_expression_addr(out_expr, proj, addr);
5594 static ir_node *ms_try_statement_to_firm(ms_try_statement_t *statement)
5596 statement_to_firm(statement->try_statement);
5597 position_t const *const pos = &statement->base.pos;
5598 warningf(WARN_OTHER, pos, "structured exception handling ignored");
5602 static ir_node *leave_statement_to_firm(leave_statement_t *statement)
5604 errorf(&statement->base.pos, "__leave not supported yet");
5609 * Transform a statement.
5611 static ir_node *statement_to_firm(statement_t *const stmt)
5614 assert(!stmt->base.transformed);
5615 stmt->base.transformed = true;
5618 switch (stmt->kind) {
5619 case STATEMENT_ASM: return asm_statement_to_firm( &stmt->asms);
5620 case STATEMENT_CASE_LABEL: return case_label_to_firm( &stmt->case_label);
5621 case STATEMENT_COMPOUND: return compound_statement_to_firm( &stmt->compound);
5622 case STATEMENT_COMPUTED_GOTO: return computed_goto_to_firm( &stmt->computed_goto);
5623 case STATEMENT_DECLARATION: return declaration_statement_to_firm(&stmt->declaration);
5624 case STATEMENT_DO_WHILE: return do_while_statement_to_firm( &stmt->do_while);
5625 case STATEMENT_EMPTY: return NULL; /* nothing */
5626 case STATEMENT_EXPRESSION: return expression_statement_to_firm( &stmt->expression);
5627 case STATEMENT_FOR: return for_statement_to_firm( &stmt->fors);
5628 case STATEMENT_GOTO: return goto_statement_to_firm( &stmt->gotos);
5629 case STATEMENT_IF: return if_statement_to_firm( &stmt->ifs);
5630 case STATEMENT_LABEL: return label_to_firm( &stmt->label);
5631 case STATEMENT_LEAVE: return leave_statement_to_firm( &stmt->leave);
5632 case STATEMENT_MS_TRY: return ms_try_statement_to_firm( &stmt->ms_try);
5633 case STATEMENT_RETURN: return return_statement_to_firm( &stmt->returns);
5634 case STATEMENT_SWITCH: return switch_statement_to_firm( &stmt->switchs);
5638 case STATEMENT_BREAK: tgt = &break_target; goto jump;
5639 case STATEMENT_CONTINUE: tgt = &continue_target; goto jump;
5641 jump_to_target(tgt);
5642 set_unreachable_now();
5646 case STATEMENT_ERROR: panic("error statement");
5648 panic("statement not implemented");
5651 static int count_local_variables(const entity_t *entity,
5652 const entity_t *const last)
5655 entity_t const *const end = last != NULL ? last->base.next : NULL;
5656 for (; entity != end; entity = entity->base.next) {
5657 if ((entity->kind == ENTITY_VARIABLE || entity->kind == ENTITY_PARAMETER) &&
5658 !var_needs_entity(&entity->variable)) {
5659 type_t *type = skip_typeref(entity->declaration.type);
5660 count += is_type_complex(type) ? 2 : 1;
5666 static void count_local_variables_in_stmt(statement_t *stmt, void *const env)
5668 int *const count = env;
5670 switch (stmt->kind) {
5671 case STATEMENT_DECLARATION: {
5672 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5673 *count += count_local_variables(decl_stmt->declarations_begin,
5674 decl_stmt->declarations_end);
5679 *count += count_local_variables(stmt->fors.scope.entities, NULL);
5688 * Return the number of local (alias free) variables used by a function.
5690 static int get_function_n_local_vars(entity_t *entity)
5692 const function_t *function = &entity->function;
5695 /* count parameters */
5696 count += count_local_variables(function->parameters.entities, NULL);
5698 /* count local variables declared in body */
5699 walk_statements(function->body, count_local_variables_in_stmt, &count);
5704 * Build Firm code for the parameters of a function.
5706 static void initialize_function_parameters(entity_t *entity)
5708 assert(entity->kind == ENTITY_FUNCTION);
5709 ir_graph *irg = current_ir_graph;
5710 ir_node *args = get_irg_args(irg);
5712 ir_type *function_irtype;
5714 if (entity->function.need_closure) {
5715 /* add an extra parameter for the static link */
5716 entity->function.static_link = new_r_Proj(args, mode_P_data, 0);
5719 /* Matze: IMO this is wrong, nested functions should have an own
5720 * type and not rely on strange parameters... */
5721 function_irtype = create_method_type(&entity->declaration.type->function, true);
5723 function_irtype = get_ir_type(entity->declaration.type);
5726 entity_t *parameter = entity->function.parameters.entities;
5727 for ( ; parameter != NULL; parameter = parameter->base.next, ++n) {
5728 if (parameter->kind != ENTITY_PARAMETER)
5731 assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN);
5732 type_t *type = skip_typeref(parameter->declaration.type);
5734 dbg_info *const dbgi = get_dbg_info(¶meter->base.pos);
5735 ir_type *const param_irtype = get_method_param_type(function_irtype, n);
5736 if (var_needs_entity(¶meter->variable)) {
5737 ir_type *frame_type = get_irg_frame_type(irg);
5739 = new_d_parameter_entity(frame_type, n, param_irtype, dbgi);
5740 parameter->declaration.kind = DECLARATION_KIND_PARAMETER_ENTITY;
5741 parameter->variable.v.entity = param;
5742 } else if (is_type_complex(type)) {
5743 ir_type *frame_type = get_irg_frame_type(irg);
5745 = new_d_parameter_entity(frame_type, n, param_irtype, dbgi);
5746 ir_node *nomem = get_irg_no_mem(irg);
5747 ir_node *frame = get_irg_frame(irg);
5748 ir_node *addr = new_simpleSel(nomem, frame, param);
5749 complex_value value = complex_deref_address(NULL, type, addr, cons_floats);
5751 parameter->declaration.kind = DECLARATION_KIND_PARAMETER;
5752 parameter->variable.v.value_number = next_value_number_function;
5753 set_irg_loc_description(irg, next_value_number_function,
5755 set_irg_loc_description(irg, next_value_number_function+1,
5757 set_value(next_value_number_function, value.real);
5758 set_value(next_value_number_function+1, value.imag);
5759 next_value_number_function += 2;
5761 ir_mode *param_mode = get_type_mode(param_irtype);
5763 ir_node *value = new_rd_Proj(dbgi, args, param_mode, pn);
5764 value = conv_to_storage_type(dbgi, value, type);
5766 parameter->declaration.kind = DECLARATION_KIND_PARAMETER;
5767 parameter->variable.v.value_number = next_value_number_function;
5768 set_irg_loc_description(irg, next_value_number_function,
5770 ++next_value_number_function;
5772 set_value(parameter->variable.v.value_number, value);
5777 static void add_function_pointer(ir_type *segment, ir_entity *method,
5778 const char *unique_template)
5780 ir_type *method_type = get_entity_type(method);
5781 ir_type *ptr_type = new_type_pointer(method_type);
5783 /* these entities don't really have a name but firm only allows
5785 * Note that we mustn't give these entities a name since for example
5786 * Mach-O doesn't allow them. */
5787 ident *ide = id_unique(unique_template);
5788 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5789 ir_graph *irg = get_const_code_irg();
5790 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5793 set_entity_ld_ident(ptr, new_id_from_chars("", 0));
5794 set_entity_compiler_generated(ptr, 1);
5795 set_entity_visibility(ptr, ir_visibility_private);
5796 add_entity_linkage(ptr, IR_LINKAGE_CONSTANT|IR_LINKAGE_HIDDEN_USER);
5797 set_atomic_ent_value(ptr, val);
5801 * Create code for a function and all inner functions.
5803 * @param entity the function entity
5805 static void create_function(entity_t *entity)
5807 assert(entity->kind == ENTITY_FUNCTION);
5808 ir_entity *function_entity = get_function_entity(entity, current_outer_frame);
5810 if (entity->function.body == NULL)
5813 inner_functions = NULL;
5814 current_trampolines = NULL;
5816 if (entity->declaration.modifiers & DM_CONSTRUCTOR) {
5817 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5818 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5820 if (entity->declaration.modifiers & DM_DESTRUCTOR) {
5821 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5822 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5825 current_function_entity = entity;
5826 current_function_name = NULL;
5827 current_funcsig = NULL;
5830 assert(!ijmp_blocks);
5831 init_jump_target(&ijmp_target, NULL);
5832 ijmp_ops = NEW_ARR_F(ir_node*, 0);
5833 ijmp_blocks = NEW_ARR_F(ir_node*, 0);
5835 int n_local_vars = get_function_n_local_vars(entity);
5836 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5837 current_ir_graph = irg;
5839 ir_graph *old_current_function = current_function;
5840 current_function = irg;
5842 ir_entity *const old_current_vararg_entity = current_vararg_entity;
5843 current_vararg_entity = NULL;
5845 set_irg_fp_model(irg, firm_fp_model);
5846 set_irn_dbg_info(get_irg_start_block(irg),
5847 get_entity_dbg_info(function_entity));
5849 next_value_number_function = 0;
5850 initialize_function_parameters(entity);
5851 current_static_link = entity->function.static_link;
5853 statement_to_firm(entity->function.body);
5855 ir_node *end_block = get_irg_end_block(irg);
5857 /* do we have a return statement yet? */
5858 if (currently_reachable()) {
5859 type_t *type = skip_typeref(entity->declaration.type);
5860 assert(is_type_function(type));
5861 type_t *const return_type = skip_typeref(type->function.return_type);
5864 if (is_type_void(return_type)) {
5865 ret = new_Return(get_store(), 0, NULL);
5867 ir_mode *const mode = get_ir_mode_storage(return_type);
5870 /* ยง5.1.2.2.3 main implicitly returns 0 */
5871 if (is_main(entity)) {
5872 in[0] = new_Const(get_mode_null(mode));
5874 in[0] = new_Unknown(mode);
5876 ret = new_Return(get_store(), 1, in);
5878 add_immBlock_pred(end_block, ret);
5881 if (enter_jump_target(&ijmp_target)) {
5883 size_t const n = ARR_LEN(ijmp_ops);
5884 ir_node *const op = n == 1 ? ijmp_ops[0] : new_Phi(n, ijmp_ops, get_irn_mode(ijmp_ops[0]));
5885 ir_node *const ijmp = new_IJmp(op);
5886 for (size_t i = ARR_LEN(ijmp_blocks); i-- != 0;) {
5887 ir_node *const block = ijmp_blocks[i];
5888 add_immBlock_pred(block, ijmp);
5889 mature_immBlock(block);
5893 DEL_ARR_F(ijmp_ops);
5894 DEL_ARR_F(ijmp_blocks);
5898 irg_finalize_cons(irg);
5900 /* finalize the frame type */
5901 ir_type *frame_type = get_irg_frame_type(irg);
5902 int n = get_compound_n_members(frame_type);
5905 for (int i = 0; i < n; ++i) {
5906 ir_entity *member = get_compound_member(frame_type, i);
5907 ir_type *entity_type = get_entity_type(member);
5909 int align = get_type_alignment_bytes(entity_type);
5910 if (align > align_all)
5914 misalign = offset % align;
5916 offset += align - misalign;
5920 set_entity_offset(member, offset);
5921 offset += get_type_size_bytes(entity_type);
5923 set_type_size_bytes(frame_type, offset);
5924 set_type_alignment_bytes(frame_type, align_all);
5926 irg_verify(irg, VERIFY_ENFORCE_SSA);
5927 current_vararg_entity = old_current_vararg_entity;
5928 current_function = old_current_function;
5930 if (current_trampolines != NULL) {
5931 DEL_ARR_F(current_trampolines);
5932 current_trampolines = NULL;
5935 /* create inner functions if any */
5936 entity_t **inner = inner_functions;
5937 if (inner != NULL) {
5938 ir_type *rem_outer_frame = current_outer_frame;
5939 current_outer_frame = get_irg_frame_type(current_ir_graph);
5940 for (int i = ARR_LEN(inner) - 1; i >= 0; --i) {
5941 create_function(inner[i]);
5945 current_outer_frame = rem_outer_frame;
5949 static void scope_to_firm(scope_t *scope)
5951 /* first pass: create declarations */
5952 entity_t *entity = scope->entities;
5953 for ( ; entity != NULL; entity = entity->base.next) {
5954 if (entity->base.symbol == NULL)
5957 if (entity->kind == ENTITY_FUNCTION) {
5958 if (entity->function.btk != BUILTIN_NONE) {
5959 /* builtins have no representation */
5962 (void)get_function_entity(entity, NULL);
5963 } else if (entity->kind == ENTITY_VARIABLE) {
5964 create_global_variable(entity);
5965 } else if (entity->kind == ENTITY_NAMESPACE) {
5966 scope_to_firm(&entity->namespacee.members);
5970 /* second pass: create code/initializers */
5971 entity = scope->entities;
5972 for ( ; entity != NULL; entity = entity->base.next) {
5973 if (entity->base.symbol == NULL)
5976 if (entity->kind == ENTITY_FUNCTION) {
5977 if (entity->function.btk != BUILTIN_NONE) {
5978 /* builtins have no representation */
5981 create_function(entity);
5982 } else if (entity->kind == ENTITY_VARIABLE) {
5983 assert(entity->declaration.kind
5984 == DECLARATION_KIND_GLOBAL_VARIABLE);
5985 current_ir_graph = get_const_code_irg();
5986 create_variable_initializer(entity);
5991 void init_ast2firm(void)
5993 obstack_init(&asm_obst);
5994 init_atomic_modes();
5996 ir_set_debug_retrieve(dbg_retrieve);
5997 ir_set_type_debug_retrieve(dbg_print_type_dbg_info);
5999 /* create idents for all known runtime functions */
6000 for (size_t i = 0; i < lengthof(rts_data); ++i) {
6001 rts_idents[i] = new_id_from_str(rts_data[i].name);
6004 entitymap_init(&entitymap);
6007 static void init_ir_types(void)
6009 static int ir_types_initialized = 0;
6010 if (ir_types_initialized)
6012 ir_types_initialized = 1;
6014 ir_type_char = get_ir_type(type_char);
6016 be_params = be_get_backend_param();
6017 mode_float_arithmetic = be_params->mode_float_arithmetic;
6019 stack_param_align = be_params->stack_param_align;
6022 void exit_ast2firm(void)
6024 entitymap_destroy(&entitymap);
6025 obstack_free(&asm_obst, NULL);
6028 static void global_asm_to_firm(statement_t *s)
6030 for (; s != NULL; s = s->base.next) {
6031 assert(s->kind == STATEMENT_ASM);
6033 char const *const text = s->asms.asm_text.begin;
6034 size_t const size = s->asms.asm_text.size;
6035 ident *const id = new_id_from_chars(text, size);
6040 static const char *get_cwd(void)
6042 static char buf[1024];
6043 if (buf[0] == '\0') {
6044 return getcwd(buf, sizeof(buf));
6049 void translation_unit_to_firm(translation_unit_t *unit)
6051 if (c_mode & _CXX) {
6052 be_dwarf_set_source_language(DW_LANG_C_plus_plus);
6053 } else if (c_mode & _C99) {
6054 be_dwarf_set_source_language(DW_LANG_C99);
6055 } else if (c_mode & _C89) {
6056 be_dwarf_set_source_language(DW_LANG_C89);
6058 be_dwarf_set_source_language(DW_LANG_C);
6060 const char *cwd = get_cwd();
6062 be_dwarf_set_compilation_directory(cwd);
6065 /* initialize firm arithmetic */
6066 tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP);
6067 ir_set_uninitialized_local_variable_func(uninitialized_local_var);
6069 /* just to be sure */
6070 init_jump_target(&break_target, NULL);
6071 init_jump_target(&continue_target, NULL);
6072 current_switch = NULL;
6073 current_translation_unit = unit;
6077 scope_to_firm(&unit->scope);
6078 global_asm_to_firm(unit->global_asm);
6080 current_ir_graph = NULL;
6081 current_translation_unit = NULL;