2 * This file is part of cparser.
3 * Copyright (C) 2012 Matthias Braun <matze@braunis.de>
12 #include <libfirm/firm.h>
13 #include <libfirm/adt/obst.h>
14 #include <libfirm/be.h>
18 #include "adt/error.h"
19 #include "adt/array.h"
20 #include "adt/strutil.h"
22 #include "jump_target.h"
24 #include "symbol_table.h"
30 #include "diagnostic.h"
31 #include "lang_features.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 return MAX(type_size, architecture_modulo_shift);
199 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
201 unsigned flags = get_atomic_type_flags(kind);
202 unsigned size = get_atomic_type_size(kind);
203 if (flags & ATOMIC_TYPE_FLAG_FLOAT) {
205 case 4: return get_modeF();
206 case 8: return get_modeD();
207 default: panic("unexpected kind");
209 } else if (flags & ATOMIC_TYPE_FLAG_INTEGER) {
211 unsigned bit_size = size * 8;
212 bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
213 unsigned modulo_shift = decide_modulo_shift(bit_size);
215 snprintf(name, sizeof(name), "%s%u", is_signed ? "I" : "U", bit_size);
216 return new_int_mode(name, irma_twos_complement, bit_size, is_signed,
224 * Initialises the atomic modes depending on the machine size.
226 static void init_atomic_modes(void)
228 atomic_modes[ATOMIC_TYPE_VOID] = mode_ANY;
229 for (int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
230 if (atomic_modes[i] != NULL)
232 atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
236 static ir_node *get_vla_size(array_type_t *const type)
238 ir_node *size_node = type->size_node;
239 if (size_node == NULL) {
240 size_node = expression_to_value(type->size_expression);
241 type->size_node = size_node;
246 static unsigned count_parameters(const function_type_t *function_type)
250 function_parameter_t *parameter = function_type->parameters;
251 for ( ; parameter != NULL; parameter = parameter->next) {
258 static ir_type *create_primitive_irtype(atomic_type_kind_t akind,
261 ir_mode *mode = atomic_modes[akind];
262 ir_type *irtype = new_d_type_primitive(mode, dbgi);
263 unsigned alignment = get_atomic_type_alignment(akind);
264 unsigned size = get_atomic_type_size(akind);
266 set_type_size_bytes(irtype, size);
267 set_type_alignment_bytes(irtype, alignment);
273 * Creates a Firm type for an atomic type
275 static ir_type *create_atomic_type(atomic_type_kind_t akind, const type_t *type)
277 type_dbg_info *dbgi = get_type_dbg_info_(type);
278 return create_primitive_irtype(akind, dbgi);
282 * Creates a Firm type for a complex type
284 static ir_type *create_complex_type(atomic_type_kind_t akind,
287 type_dbg_info *dbgi = get_type_dbg_info_(type);
288 ir_type *etype = create_primitive_irtype(akind, NULL);
289 ir_type *irtype = new_d_type_array(1, etype, dbgi);
291 int align = get_type_alignment_bytes(etype);
292 set_type_alignment_bytes(irtype, align);
293 unsigned n_elements = 2;
294 set_array_bounds_int(irtype, 0, 0, n_elements);
295 size_t elemsize = get_type_size_bytes(etype);
296 if (elemsize % align > 0) {
297 elemsize += align - (elemsize % align);
299 set_type_size_bytes(irtype, n_elements * elemsize);
300 set_type_state(irtype, layout_fixed);
306 * Creates a Firm type for an imaginary type
308 static ir_type *create_imaginary_type(const atomic_type_t *type)
310 return create_atomic_type(type->akind, (const type_t*)type);
314 * return type of a parameter (and take transparent union gnu extension into
317 static type_t *get_parameter_type(type_t *orig_type)
319 type_t *type = skip_typeref(orig_type);
320 if (is_type_union(type)
321 && get_type_modifiers(orig_type) & DM_TRANSPARENT_UNION) {
322 compound_t *compound = type->compound.compound;
323 type = compound->members.entities->declaration.type;
329 static ir_type *get_ir_type(type_t *type);
331 static ir_type *create_method_type(const function_type_t *function_type, bool for_closure)
333 type_t *return_type = skip_typeref(function_type->return_type);
335 int n_parameters = count_parameters(function_type)
336 + (for_closure ? 1 : 0);
337 int n_results = is_type_void(return_type) ? 0 : 1;
338 type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) function_type);
339 ir_type *irtype = new_d_type_method(n_parameters, n_results, dbgi);
341 if (!is_type_void(return_type)) {
342 ir_type *restype = get_ir_type(return_type);
343 set_method_res_type(irtype, 0, restype);
346 function_parameter_t *parameter = function_type->parameters;
349 ir_type *p_irtype = get_ir_type(type_void_ptr);
350 set_method_param_type(irtype, n, p_irtype);
353 for ( ; parameter != NULL; parameter = parameter->next) {
354 type_t *type = get_parameter_type(parameter->type);
355 ir_type *p_irtype = get_ir_type(type);
356 set_method_param_type(irtype, n, p_irtype);
360 bool is_variadic = function_type->variadic;
363 set_method_variadicity(irtype, variadicity_variadic);
365 unsigned cc = get_method_calling_convention(irtype);
366 switch (function_type->calling_convention) {
367 case CC_DEFAULT: /* unspecified calling convention, equal to one of the other, typically cdecl */
370 set_method_calling_convention(irtype, SET_CDECL(cc));
377 /* only non-variadic function can use stdcall, else use cdecl */
378 set_method_calling_convention(irtype, SET_STDCALL(cc));
384 /* only non-variadic function can use fastcall, else use cdecl */
385 set_method_calling_convention(irtype, SET_FASTCALL(cc));
389 /* Hmm, leave default, not accepted by the parser yet. */
394 set_method_calling_convention(irtype, get_method_calling_convention(irtype) | cc_this_call);
396 const decl_modifiers_t modifiers = function_type->modifiers;
397 if (modifiers & DM_CONST)
398 add_method_additional_properties(irtype, mtp_property_const);
399 if (modifiers & DM_PURE)
400 add_method_additional_properties(irtype, mtp_property_pure);
401 if (modifiers & DM_RETURNS_TWICE)
402 add_method_additional_properties(irtype, mtp_property_returns_twice);
403 if (modifiers & DM_NORETURN)
404 add_method_additional_properties(irtype, mtp_property_noreturn);
405 if (modifiers & DM_NOTHROW)
406 add_method_additional_properties(irtype, mtp_property_nothrow);
407 if (modifiers & DM_MALLOC)
408 add_method_additional_properties(irtype, mtp_property_malloc);
413 static ir_type *create_pointer_type(pointer_type_t *type)
415 type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) type);
416 type_t *points_to = type->points_to;
417 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
418 ir_type *irtype = new_d_type_pointer(ir_points_to, dbgi);
423 static ir_type *create_reference_type(reference_type_t *type)
425 type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) type);
426 type_t *refers_to = type->refers_to;
427 ir_type *ir_refers_to = get_ir_type_incomplete(refers_to);
428 ir_type *irtype = new_d_type_pointer(ir_refers_to, dbgi);
433 static ir_type *create_array_type(array_type_t *type)
435 type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) type);
436 type_t *element_type = type->element_type;
437 ir_type *ir_element_type = get_ir_type(element_type);
438 ir_type *irtype = new_d_type_array(1, ir_element_type, dbgi);
440 const int align = get_type_alignment_bytes(ir_element_type);
441 set_type_alignment_bytes(irtype, align);
443 if (type->size_constant) {
444 int n_elements = type->size;
446 set_array_bounds_int(irtype, 0, 0, n_elements);
448 size_t elemsize = get_type_size_bytes(ir_element_type);
449 if (elemsize % align > 0) {
450 elemsize += align - (elemsize % align);
452 set_type_size_bytes(irtype, n_elements * elemsize);
454 set_array_lower_bound_int(irtype, 0, 0);
456 set_type_state(irtype, layout_fixed);
462 * Return the signed integer type of size bits.
464 * @param size the size
466 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
470 static ir_mode *s_modes[64 + 1] = {NULL, };
474 if (size <= 0 || size > 64)
477 mode = s_modes[size];
479 ir_mode *base_mode = get_type_mode(base_tp);
480 unsigned modulo_shift = get_mode_modulo_shift(base_mode);
483 snprintf(name, sizeof(name), "bf_I%u", size);
484 mode = new_int_mode(name, irma_twos_complement, size, 1, modulo_shift);
485 s_modes[size] = mode;
488 type_dbg_info *dbgi = get_type_dbg_info_(type);
489 res = new_d_type_primitive(mode, dbgi);
490 set_primitive_base_type(res, base_tp);
496 * Return the unsigned integer type of size bits.
498 * @param size the size
500 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
504 static ir_mode *u_modes[64 + 1] = {NULL, };
508 if (size <= 0 || size > 64)
511 mode = u_modes[size];
513 ir_mode *base_mode = get_type_mode(base_tp);
514 unsigned modulo_shift = get_mode_modulo_shift(base_mode);
517 snprintf(name, sizeof(name), "bf_U%u", size);
518 mode = new_int_mode(name, irma_twos_complement, size, 0, modulo_shift);
519 u_modes[size] = mode;
522 type_dbg_info *dbgi = get_type_dbg_info_(type);
523 res = new_d_type_primitive(mode, dbgi);
524 set_primitive_base_type(res, base_tp);
529 static ir_type *create_bitfield_type(const entity_t *entity)
531 assert(entity->kind == ENTITY_COMPOUND_MEMBER);
532 type_t *base = skip_typeref(entity->declaration.type);
533 assert(is_type_integer(base));
534 ir_type *irbase = get_ir_type(base);
536 unsigned bit_size = entity->compound_member.bit_size;
538 if (is_type_signed(base)) {
539 return get_signed_int_type_for_bit_size(irbase, bit_size, base);
541 return get_unsigned_int_type_for_bit_size(irbase, bit_size, base);
546 * Construct firm type from ast struct type.
548 static ir_type *create_compound_type(compound_type_t *const type, bool const incomplete)
550 compound_t *compound = type->compound;
552 if (compound->irtype != NULL && (compound->irtype_complete || incomplete)) {
553 return compound->irtype;
556 bool const is_union = type->base.kind == TYPE_COMPOUND_UNION;
558 symbol_t *type_symbol = compound->base.symbol;
560 if (type_symbol != NULL) {
561 id = new_id_from_str(type_symbol->string);
564 id = id_unique("__anonymous_union.%u");
566 id = id_unique("__anonymous_struct.%u");
572 irtype = new_type_union(id);
574 irtype = new_type_struct(id);
577 compound->irtype_complete = false;
578 compound->irtype = irtype;
584 layout_union_type(type);
586 layout_struct_type(type);
589 compound->irtype_complete = true;
591 entity_t *entry = compound->members.entities;
592 for ( ; entry != NULL; entry = entry->base.next) {
593 if (entry->kind != ENTITY_COMPOUND_MEMBER)
596 symbol_t *symbol = entry->base.symbol;
597 type_t *entry_type = entry->declaration.type;
599 if (symbol == NULL) {
600 /* anonymous bitfield member, skip */
601 if (entry->compound_member.bitfield)
603 assert(is_type_compound(entry_type));
604 member_id = id_unique("anon.%u");
606 member_id = new_id_from_str(symbol->string);
609 dbg_info *dbgi = get_dbg_info(&entry->base.pos);
611 ir_type *entry_irtype;
612 if (entry->compound_member.bitfield) {
613 entry_irtype = create_bitfield_type(entry);
615 entry_irtype = get_ir_type(entry_type);
617 ir_entity *entity = new_d_entity(irtype, member_id, entry_irtype, dbgi);
619 set_entity_offset(entity, entry->compound_member.offset);
620 set_entity_offset_bits_remainder(entity,
621 entry->compound_member.bit_offset);
623 assert(entry->declaration.kind == DECLARATION_KIND_UNKNOWN);
624 entry->declaration.kind = DECLARATION_KIND_COMPOUND_MEMBER;
625 entry->compound_member.entity = entity;
628 set_type_alignment_bytes(irtype, compound->alignment);
629 set_type_size_bytes(irtype, compound->size);
630 set_type_state(irtype, layout_fixed);
635 void determine_enum_values(enum_type_t *const type)
637 ir_mode *const mode = atomic_modes[type->base.akind];
638 ir_tarval *const one = get_mode_one(mode);
639 ir_tarval * tv_next = get_mode_null(mode);
641 enum_t *enume = type->enume;
642 entity_t *entry = enume->base.next;
643 for (; entry != NULL; entry = entry->base.next) {
644 if (entry->kind != ENTITY_ENUM_VALUE)
647 expression_t *const init = entry->enum_value.value;
649 tv_next = fold_constant_to_tarval(init);
651 assert(entry->enum_value.tv == NULL || entry->enum_value.tv == tv_next);
652 entry->enum_value.tv = tv_next;
653 tv_next = tarval_add(tv_next, one);
657 static ir_type *create_enum_type(enum_type_t *const type)
659 return create_atomic_type(type->base.akind, (const type_t*) type);
662 static ir_type *get_ir_type_incomplete(type_t *type)
664 type = skip_typeref(type);
666 if (type->base.firm_type != NULL) {
667 return type->base.firm_type;
670 if (is_type_compound(type)) {
671 return create_compound_type(&type->compound, true);
673 return get_ir_type(type);
677 static ir_type *get_ir_type(type_t *type)
679 type = skip_typeref(type);
681 if (type->base.firm_type != NULL) {
682 return type->base.firm_type;
685 ir_type *firm_type = NULL;
686 switch (type->kind) {
688 firm_type = create_atomic_type(type->atomic.akind, type);
691 firm_type = create_complex_type(type->atomic.akind, type);
694 firm_type = create_imaginary_type(&type->atomic);
697 firm_type = create_method_type(&type->function, false);
700 firm_type = create_pointer_type(&type->pointer);
703 firm_type = create_reference_type(&type->reference);
706 firm_type = create_array_type(&type->array);
708 case TYPE_COMPOUND_STRUCT:
709 case TYPE_COMPOUND_UNION:
710 firm_type = create_compound_type(&type->compound, false);
713 firm_type = create_enum_type(&type->enumt);
721 if (firm_type == NULL)
722 panic("unknown type found");
724 type->base.firm_type = firm_type;
728 static ir_mode *get_ir_mode_storage(type_t *type)
730 type = skip_typeref(type);
732 /* Firm doesn't report a mode for arrays and structs/unions. */
733 if (!is_type_scalar(type) || is_type_complex(type)) {
737 ir_type *const irtype = get_ir_type(type);
738 ir_mode *const mode = get_type_mode(irtype);
739 assert(mode != NULL);
743 static ir_mode *get_complex_mode_storage(type_t *type)
745 assert(is_type_complex(skip_typeref(type)));
746 ir_type *const irtype = get_ir_type(type);
747 ir_type *const etype = get_array_element_type(irtype);
748 ir_mode *const mode = get_type_mode(etype);
753 * get arithmetic mode for a type. This is different from get_ir_mode_storage,
754 * int that it returns bigger modes for floating point on some platforms
755 * (x87 internally does arithemtic with 80bits)
757 static ir_mode *get_ir_mode_arithmetic(type_t *type)
759 ir_mode *mode = get_ir_mode_storage(type);
760 if (mode_is_float(mode) && mode_float_arithmetic != NULL) {
761 return mode_float_arithmetic;
767 static ir_mode *get_complex_mode_arithmetic(type_t *type)
769 ir_mode *mode = get_complex_mode_storage(type);
770 if (mode_is_float(mode) && mode_float_arithmetic != NULL) {
771 return mode_float_arithmetic;
778 * Return a node representing the size of a type.
780 static ir_node *get_type_size_node(type_t *type)
782 ir_mode *const mode = get_ir_mode_storage(type_size_t);
783 type = skip_typeref(type);
785 if (is_type_array(type) && type->array.is_vla) {
786 ir_node *size_node = get_vla_size(&type->array);
787 ir_node *elem_size = get_type_size_node(type->array.element_type);
788 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
792 unsigned const size = get_type_size(type);
793 return new_Const_long(mode, size);
796 /** Names of the runtime functions. */
797 static const struct {
798 int id; /**< the rts id */
799 int n_res; /**< number of return values */
800 const char *name; /**< the name of the rts function */
801 int n_params; /**< number of parameters */
802 unsigned flags; /**< language flags */
804 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
805 { rts_abort, 0, "abort", 0, _C89 },
806 { rts_alloca, 1, "alloca", 1, _ALL },
807 { rts_abs, 1, "abs", 1, _C89 },
808 { rts_labs, 1, "labs", 1, _C89 },
809 { rts_llabs, 1, "llabs", 1, _C99 },
810 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
812 { rts_fabs, 1, "fabs", 1, _C89 },
813 { rts_sqrt, 1, "sqrt", 1, _C89 },
814 { rts_cbrt, 1, "cbrt", 1, _C99 },
815 { rts_exp, 1, "exp", 1, _C89 },
816 { rts_exp2, 1, "exp2", 1, _C89 },
817 { rts_exp10, 1, "exp10", 1, _GNUC },
818 { rts_log, 1, "log", 1, _C89 },
819 { rts_log2, 1, "log2", 1, _C89 },
820 { rts_log10, 1, "log10", 1, _C89 },
821 { rts_pow, 1, "pow", 2, _C89 },
822 { rts_sin, 1, "sin", 1, _C89 },
823 { rts_cos, 1, "cos", 1, _C89 },
824 { rts_tan, 1, "tan", 1, _C89 },
825 { rts_asin, 1, "asin", 1, _C89 },
826 { rts_acos, 1, "acos", 1, _C89 },
827 { rts_atan, 1, "atan", 1, _C89 },
828 { rts_sinh, 1, "sinh", 1, _C89 },
829 { rts_cosh, 1, "cosh", 1, _C89 },
830 { rts_tanh, 1, "tanh", 1, _C89 },
832 { rts_fabsf, 1, "fabsf", 1, _C99 },
833 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
834 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
835 { rts_expf, 1, "expf", 1, _C99 },
836 { rts_exp2f, 1, "exp2f", 1, _C99 },
837 { rts_exp10f, 1, "exp10f", 1, _GNUC },
838 { rts_logf, 1, "logf", 1, _C99 },
839 { rts_log2f, 1, "log2f", 1, _C99 },
840 { rts_log10f, 1, "log10f", 1, _C99 },
841 { rts_powf, 1, "powf", 2, _C99 },
842 { rts_sinf, 1, "sinf", 1, _C99 },
843 { rts_cosf, 1, "cosf", 1, _C99 },
844 { rts_tanf, 1, "tanf", 1, _C99 },
845 { rts_asinf, 1, "asinf", 1, _C99 },
846 { rts_acosf, 1, "acosf", 1, _C99 },
847 { rts_atanf, 1, "atanf", 1, _C99 },
848 { rts_sinhf, 1, "sinhf", 1, _C99 },
849 { rts_coshf, 1, "coshf", 1, _C99 },
850 { rts_tanhf, 1, "tanhf", 1, _C99 },
852 { rts_fabsl, 1, "fabsl", 1, _C99 },
853 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
854 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
855 { rts_expl, 1, "expl", 1, _C99 },
856 { rts_exp2l, 1, "exp2l", 1, _C99 },
857 { rts_exp10l, 1, "exp10l", 1, _GNUC },
858 { rts_logl, 1, "logl", 1, _C99 },
859 { rts_log2l, 1, "log2l", 1, _C99 },
860 { rts_log10l, 1, "log10l", 1, _C99 },
861 { rts_powl, 1, "powl", 2, _C99 },
862 { rts_sinl, 1, "sinl", 1, _C99 },
863 { rts_cosl, 1, "cosl", 1, _C99 },
864 { rts_tanl, 1, "tanl", 1, _C99 },
865 { rts_asinl, 1, "asinl", 1, _C99 },
866 { rts_acosl, 1, "acosl", 1, _C99 },
867 { rts_atanl, 1, "atanl", 1, _C99 },
868 { rts_sinhl, 1, "sinhl", 1, _C99 },
869 { rts_coshl, 1, "coshl", 1, _C99 },
870 { rts_tanhl, 1, "tanhl", 1, _C99 },
872 { rts_strcmp, 1, "strcmp", 2, _C89 },
873 { rts_strncmp, 1, "strncmp", 3, _C89 },
874 { rts_strcpy, 1, "strcpy", 2, _C89 },
875 { rts_strlen, 1, "strlen", 1, _C89 },
876 { rts_memcpy, 1, "memcpy", 3, _C89 },
877 { rts_mempcpy, 1, "mempcpy", 3, _GNUC },
878 { rts_memmove, 1, "memmove", 3, _C89 },
879 { rts_memset, 1, "memset", 3, _C89 },
880 { rts_memcmp, 1, "memcmp", 3, _C89 },
883 static ident *rts_idents[lengthof(rts_data)];
885 static create_ld_ident_func create_ld_ident = create_name_linux_elf;
887 void set_create_ld_ident(ident *(*func)(entity_t*))
889 create_ld_ident = func;
892 static bool declaration_is_definition(const entity_t *entity)
894 switch (entity->kind) {
895 case ENTITY_VARIABLE:
896 return entity->declaration.storage_class != STORAGE_CLASS_EXTERN;
897 case ENTITY_FUNCTION:
898 return entity->function.body != NULL;
899 case ENTITY_PARAMETER:
900 case ENTITY_COMPOUND_MEMBER:
904 case ENTITY_ENUM_VALUE:
905 case ENTITY_NAMESPACE:
907 case ENTITY_LOCAL_LABEL:
910 panic("entity is not a declaration");
914 * Handle GNU attributes for entities
916 * @param ent the entity
917 * @param decl the routine declaration
919 static void handle_decl_modifiers(ir_entity *irentity, entity_t *entity)
921 assert(is_declaration(entity));
922 decl_modifiers_t modifiers = entity->declaration.modifiers;
924 if (is_method_entity(irentity)) {
925 if (modifiers & DM_PURE)
926 add_entity_additional_properties(irentity, mtp_property_pure);
927 if (modifiers & DM_CONST)
928 add_entity_additional_properties(irentity, mtp_property_const);
929 if (modifiers & DM_NOINLINE)
930 add_entity_additional_properties(irentity, mtp_property_noinline);
931 if (modifiers & DM_FORCEINLINE)
932 add_entity_additional_properties(irentity, mtp_property_always_inline);
933 if (modifiers & DM_NAKED)
934 add_entity_additional_properties(irentity, mtp_property_naked);
935 if (entity->kind == ENTITY_FUNCTION && entity->function.is_inline)
936 add_entity_additional_properties(irentity,
937 mtp_property_inline_recommended);
939 if ((modifiers & DM_USED) && declaration_is_definition(entity)) {
940 add_entity_linkage(irentity, IR_LINKAGE_HIDDEN_USER);
942 if ((modifiers & DM_WEAK) && declaration_is_definition(entity)
943 && entity->declaration.storage_class != STORAGE_CLASS_EXTERN) {
944 add_entity_linkage(irentity, IR_LINKAGE_WEAK);
948 static bool is_main(entity_t *entity)
950 static symbol_t *sym_main = NULL;
951 if (sym_main == NULL) {
952 sym_main = symbol_table_insert("main");
955 if (entity->base.symbol != sym_main)
957 /* must be in outermost scope */
958 if (entity->base.parent_scope != ¤t_translation_unit->scope)
965 * Creates an entity representing a function.
967 * @param entity the function declaration/definition
968 * @param owner_type the owner type of this function, NULL
969 * for global functions
971 static ir_entity *get_function_entity(entity_t *entity, ir_type *owner_type)
973 assert(entity->kind == ENTITY_FUNCTION);
974 if (entity->function.irentity != NULL)
975 return entity->function.irentity;
977 switch (entity->function.btk) {
980 case BUILTIN_LIBC_CHECK:
986 symbol_t *symbol = entity->base.symbol;
987 ident *id = new_id_from_str(symbol->string);
989 /* already an entity defined? */
990 ir_entity *irentity = entitymap_get(&entitymap, symbol);
991 bool const has_body = entity->function.body != NULL;
992 if (irentity != NULL) {
996 ir_type *ir_type_method;
997 if (entity->function.need_closure)
998 ir_type_method = create_method_type(&entity->declaration.type->function, true);
1000 ir_type_method = get_ir_type(entity->declaration.type);
1002 bool nested_function = false;
1003 if (owner_type == NULL)
1004 owner_type = get_glob_type();
1006 nested_function = true;
1008 dbg_info *const dbgi = get_dbg_info(&entity->base.pos);
1009 irentity = new_d_entity(owner_type, id, ir_type_method, dbgi);
1012 if (nested_function)
1013 ld_id = id_unique("inner.%u");
1015 ld_id = create_ld_ident(entity);
1016 set_entity_ld_ident(irentity, ld_id);
1018 handle_decl_modifiers(irentity, entity);
1020 if (! nested_function) {
1021 storage_class_tag_t const storage_class
1022 = (storage_class_tag_t) entity->declaration.storage_class;
1023 if (storage_class == STORAGE_CLASS_STATIC) {
1024 set_entity_visibility(irentity, ir_visibility_local);
1026 set_entity_visibility(irentity, ir_visibility_external);
1029 bool const is_inline = entity->function.is_inline;
1030 if (is_inline && has_body) {
1031 if (((c_mode & _C99) && storage_class == STORAGE_CLASS_NONE)
1032 || ((c_mode & _C99) == 0
1033 && storage_class == STORAGE_CLASS_EXTERN)) {
1034 add_entity_linkage(irentity, IR_LINKAGE_NO_CODEGEN);
1038 /* nested functions are always local */
1039 set_entity_visibility(irentity, ir_visibility_local);
1042 /* We should check for file scope here, but as long as we compile C only
1043 this is not needed. */
1044 if (!freestanding && !has_body) {
1045 /* check for a known runtime function */
1046 for (size_t i = 0; i < lengthof(rts_data); ++i) {
1047 if (id != rts_idents[i])
1050 function_type_t *function_type
1051 = &entity->declaration.type->function;
1052 /* rts_entities code can't handle a "wrong" number of parameters */
1053 if (function_type->unspecified_parameters)
1056 /* check number of parameters */
1057 int n_params = count_parameters(function_type);
1058 if (n_params != rts_data[i].n_params)
1061 type_t *return_type = skip_typeref(function_type->return_type);
1062 int n_res = is_type_void(return_type) ? 0 : 1;
1063 if (n_res != rts_data[i].n_res)
1066 /* ignore those rts functions not necessary needed for current mode */
1067 if ((c_mode & rts_data[i].flags) == 0)
1069 assert(rts_entities[rts_data[i].id] == NULL);
1070 rts_entities[rts_data[i].id] = irentity;
1074 entitymap_insert(&entitymap, symbol, irentity);
1077 entity->declaration.kind = DECLARATION_KIND_FUNCTION;
1078 entity->function.irentity = irentity;
1084 * Creates a SymConst for a given entity.
1086 * @param dbgi debug info
1087 * @param entity the entity
1089 static ir_node *create_symconst(dbg_info *dbgi, ir_entity *entity)
1091 assert(entity != NULL);
1092 union symconst_symbol sym;
1093 sym.entity_p = entity;
1094 return new_d_SymConst(dbgi, mode_P, sym, symconst_addr_ent);
1097 static ir_node *create_Const_from_bool(ir_mode *const mode, bool const v)
1099 return new_Const((v ? get_mode_one : get_mode_null)(mode));
1102 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1104 ir_mode *value_mode = get_irn_mode(value);
1106 if (value_mode == dest_mode)
1109 return new_d_Conv(dbgi, value, dest_mode);
1112 static ir_node *conv_to_storage_type(dbg_info *const dbgi, ir_node *const val, type_t *const type)
1114 ir_mode *const mode = get_ir_mode_storage(type);
1115 return create_conv(dbgi, val, mode);
1119 * Creates a SymConst node representing a string constant.
1121 * @param src_pos the source position of the string constant
1122 * @param id_prefix a prefix for the name of the generated string constant
1123 * @param value the value of the string constant
1125 static ir_node *string_to_firm(position_t const *const src_pos, char const *const id_prefix, string_t const *const value)
1127 size_t const slen = get_string_len(value) + 1;
1128 ir_initializer_t *const initializer = create_initializer_compound(slen);
1129 ir_type * elem_type;
1130 switch (value->encoding) {
1131 case STRING_ENCODING_CHAR:
1132 case STRING_ENCODING_UTF8: {
1133 elem_type = ir_type_char;
1135 ir_mode *const mode = get_type_mode(elem_type);
1136 char const *p = value->begin;
1137 for (size_t i = 0; i < slen; ++i) {
1138 ir_tarval *tv = new_tarval_from_long(*p++, mode);
1139 ir_initializer_t *val = create_initializer_tarval(tv);
1140 set_initializer_compound_value(initializer, i, val);
1147 case STRING_ENCODING_CHAR16: type = type_char16_t; goto init_wide;
1148 case STRING_ENCODING_CHAR32: type = type_char32_t; goto init_wide;
1149 case STRING_ENCODING_WIDE: type = type_wchar_t; goto init_wide;
1151 elem_type = get_ir_type(type);
1153 ir_mode *const mode = get_type_mode(elem_type);
1154 char const *p = value->begin;
1155 for (size_t i = 0; i < slen; ++i) {
1156 assert(p <= value->begin + value->size);
1157 utf32 v = read_utf8_char(&p);
1158 ir_tarval *tv = new_tarval_from_long(v, mode);
1159 ir_initializer_t *val = create_initializer_tarval(tv);
1160 set_initializer_compound_value(initializer, i, val);
1165 panic("invalid string encoding");
1168 ir_type *const type = new_type_array(1, elem_type);
1169 set_array_bounds_int(type, 0, 0, slen);
1170 set_type_size_bytes( type, slen * get_type_size_bytes(elem_type));
1171 set_type_state( type, layout_fixed);
1173 ir_type *const global_type = get_glob_type();
1174 ident *const id = id_unique(id_prefix);
1175 dbg_info *const dbgi = get_dbg_info(src_pos);
1176 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1177 set_entity_ld_ident( entity, id);
1178 set_entity_visibility( entity, ir_visibility_private);
1179 add_entity_linkage( entity, IR_LINKAGE_CONSTANT);
1180 set_entity_initializer(entity, initializer);
1182 return create_symconst(dbgi, entity);
1185 static bool try_create_integer(literal_expression_t *literal, type_t *type)
1187 assert(type->kind == TYPE_ATOMIC || type->kind == TYPE_COMPLEX);
1188 atomic_type_kind_t akind = type->atomic.akind;
1190 ir_mode *const mode = atomic_modes[akind];
1191 char const *const str = literal->value.begin;
1192 ir_tarval *const tv = new_tarval_from_str(str, literal->suffix - str, mode);
1193 if (tv == tarval_bad)
1196 literal->base.type = type;
1197 literal->target_value = tv;
1201 void determine_literal_type(literal_expression_t *const literal)
1203 assert(literal->base.kind == EXPR_LITERAL_INTEGER);
1205 /* -1: signed only, 0: any, 1: unsigned only */
1207 !is_type_signed(literal->base.type) ? 1 :
1208 literal->value.begin[0] == '0' ? 0 :
1209 -1; /* Decimal literals only try signed types. */
1211 tarval_int_overflow_mode_t old_mode = tarval_get_integer_overflow_mode();
1212 tarval_set_integer_overflow_mode(TV_OVERFLOW_BAD);
1214 if (try_create_integer(literal, literal->base.type))
1217 /* now try if the constant is small enough for some types */
1218 if (sign >= 0 && try_create_integer(literal, type_unsigned_int))
1220 if (sign <= 0 && try_create_integer(literal, type_long))
1222 if (sign >= 0 && try_create_integer(literal, type_unsigned_long))
1224 /* last try? then we should not report tarval_bad */
1226 tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP);
1227 if (sign <= 0 && try_create_integer(literal, type_long_long))
1232 tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP);
1233 bool res = try_create_integer(literal, type_unsigned_long_long);
1235 panic("internal error when parsing number literal");
1238 tarval_set_integer_overflow_mode(old_mode);
1242 * Creates a Const node representing a constant.
1244 static ir_node *literal_to_firm_(const literal_expression_t *literal,
1247 const char *string = literal->value.begin;
1248 size_t size = literal->value.size;
1251 switch (literal->base.kind) {
1252 case EXPR_LITERAL_INTEGER:
1253 assert(literal->target_value != NULL);
1254 tv = literal->target_value;
1257 case EXPR_LITERAL_FLOATINGPOINT:
1258 tv = new_tarval_from_str(string, size, mode);
1261 case EXPR_LITERAL_BOOLEAN:
1262 if (string[0] == 't') {
1263 tv = get_mode_one(mode);
1265 assert(string[0] == 'f');
1266 case EXPR_LITERAL_MS_NOOP:
1267 tv = get_mode_null(mode);
1272 panic("invalid literal kind");
1275 dbg_info *const dbgi = get_dbg_info(&literal->base.pos);
1276 return new_d_Const(dbgi, tv);
1279 static ir_node *literal_to_firm(const literal_expression_t *literal)
1281 type_t *type = skip_typeref(literal->base.type);
1282 ir_mode *mode_storage = get_ir_mode_storage(type);
1283 return literal_to_firm_(literal, mode_storage);
1287 * Creates a Const node representing a character constant.
1289 static ir_node *char_literal_to_firm(string_literal_expression_t const *literal)
1291 type_t *type = skip_typeref(literal->base.type);
1292 ir_mode *mode = get_ir_mode_storage(type);
1293 const char *string = literal->value.begin;
1294 size_t size = literal->value.size;
1297 switch (literal->value.encoding) {
1298 case STRING_ENCODING_WIDE: {
1299 utf32 v = read_utf8_char(&string);
1301 size_t len = snprintf(buf, sizeof(buf), UTF32_PRINTF_FORMAT, v);
1303 tv = new_tarval_from_str(buf, len, mode);
1307 case STRING_ENCODING_CHAR: {
1310 = get_atomic_type_flags(ATOMIC_TYPE_CHAR) & ATOMIC_TYPE_FLAG_SIGNED;
1311 if (size == 1 && char_is_signed) {
1312 v = (signed char)string[0];
1315 for (size_t i = 0; i < size; ++i) {
1316 v = (v << 8) | ((unsigned char)string[i]);
1320 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1322 tv = new_tarval_from_str(buf, len, mode);
1327 panic("invalid literal kind");
1330 dbg_info *const dbgi = get_dbg_info(&literal->base.pos);
1331 return new_d_Const(dbgi, tv);
1335 * Allocate an area of size bytes aligned at alignment
1338 static ir_entity *alloc_trampoline(ir_type *frame_type, int size, unsigned alignment)
1340 static unsigned area_cnt = 0;
1343 ir_type *tp = new_type_array(1, ir_type_char);
1344 set_array_bounds_int(tp, 0, 0, size);
1345 set_type_alignment_bytes(tp, alignment);
1347 snprintf(buf, sizeof(buf), "trampolin%u", area_cnt++);
1348 ident *name = new_id_from_str(buf);
1349 ir_entity *area = new_entity(frame_type, name, tp);
1351 /* mark this entity as compiler generated */
1352 set_entity_compiler_generated(area, 1);
1357 * Return a node representing a trampoline region
1358 * for a given function entity.
1360 * @param dbgi debug info
1361 * @param entity the function entity
1363 static ir_node *get_trampoline_region(dbg_info *dbgi, ir_entity *entity)
1365 ir_entity *region = NULL;
1368 if (current_trampolines != NULL) {
1369 for (i = ARR_LEN(current_trampolines) - 1; i >= 0; --i) {
1370 if (current_trampolines[i].function == entity) {
1371 region = current_trampolines[i].region;
1376 current_trampolines = NEW_ARR_F(trampoline_region, 0);
1378 ir_graph *irg = current_ir_graph;
1379 if (region == NULL) {
1380 /* create a new region */
1381 ir_type *frame_tp = get_irg_frame_type(irg);
1382 trampoline_region reg;
1383 reg.function = entity;
1385 reg.region = alloc_trampoline(frame_tp,
1386 be_params->trampoline_size,
1387 be_params->trampoline_align);
1388 ARR_APP1(trampoline_region, current_trampolines, reg);
1389 region = reg.region;
1391 return new_d_simpleSel(dbgi, get_irg_no_mem(irg), get_irg_frame(irg),
1396 * Creates a trampoline for a function represented by an entity.
1398 * @param dbgi debug info
1399 * @param mode the (reference) mode for the function address
1400 * @param entity the function entity
1402 static ir_node *create_trampoline(dbg_info *dbgi, ir_mode *mode,
1405 assert(entity != NULL);
1407 in[0] = get_trampoline_region(dbgi, entity);
1408 in[1] = create_symconst(dbgi, entity);
1409 in[2] = get_irg_frame(current_ir_graph);
1411 ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_inner_trampoline, get_unknown_type());
1412 set_store(new_Proj(irn, mode_M, pn_Builtin_M));
1413 return new_Proj(irn, mode, pn_Builtin_max+1);
1417 * Dereference an address.
1419 * @param dbgi debug info
1420 * @param type the type of the dereferenced result (the points_to type)
1421 * @param addr the address to dereference
1423 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1424 ir_node *const addr)
1426 type_t *skipped = skip_typeref(type);
1427 if (is_type_incomplete(skipped))
1430 ir_type *irtype = get_ir_type(skipped);
1431 if (is_compound_type(irtype)
1432 || is_Method_type(irtype)
1433 || is_Array_type(irtype)) {
1437 ir_cons_flags flags = skipped->base.qualifiers & TYPE_QUALIFIER_VOLATILE
1438 ? cons_volatile : cons_none;
1439 ir_mode *const mode = get_type_mode(irtype);
1440 ir_node *const memory = get_store();
1441 ir_node *const load = new_d_Load(dbgi, memory, addr, mode, flags);
1442 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1443 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1445 set_store(load_mem);
1450 * Returns the correct base address depending on whether it is a parameter or a
1451 * normal local variable.
1453 static ir_node *get_local_frame(ir_entity *const ent)
1455 ir_graph *const irg = current_ir_graph;
1456 const ir_type *const owner = get_entity_owner(ent);
1457 if (owner == current_outer_frame) {
1458 assert(current_static_link != NULL);
1459 return current_static_link;
1461 return get_irg_frame(irg);
1466 * Keep the current block and memory.
1467 * This is necessary for all loops, because they could become infinite.
1469 static void keep_loop(void)
1471 keep_alive(get_cur_block());
1472 keep_alive(get_store());
1475 static ir_node *enum_constant_to_firm(reference_expression_t const *const ref)
1477 entity_t *entity = ref->entity;
1478 if (entity->enum_value.tv == NULL) {
1479 type_t *type = skip_typeref(entity->enum_value.enum_type);
1480 assert(type->kind == TYPE_ENUM);
1481 determine_enum_values(&type->enumt);
1484 return new_Const(entity->enum_value.tv);
1487 static ir_node *reference_addr(const reference_expression_t *ref)
1489 dbg_info *dbgi = get_dbg_info(&ref->base.pos);
1490 entity_t *entity = ref->entity;
1491 assert(is_declaration(entity));
1493 if (entity->kind == ENTITY_FUNCTION
1494 && entity->function.btk != BUILTIN_NONE) {
1495 ir_entity *irentity = get_function_entity(entity, NULL);
1496 /* for gcc compatibility we have to produce (dummy) addresses for some
1497 * builtins which don't have entities */
1498 if (irentity == NULL) {
1499 position_t const *const pos = &ref->base.pos;
1500 warningf(WARN_OTHER, pos, "taking address of builtin '%N'", ref->entity);
1502 /* simply create a NULL pointer */
1503 ir_mode *const mode = get_ir_mode_storage(type_void_ptr);
1504 return new_Const(get_mode_null(mode));
1508 switch ((declaration_kind_t) entity->declaration.kind) {
1509 case DECLARATION_KIND_UNKNOWN:
1511 case DECLARATION_KIND_PARAMETER:
1512 case DECLARATION_KIND_LOCAL_VARIABLE:
1513 /* you can store to a local variable (so we don't panic but return NULL
1514 * as an indicator for no real address) */
1516 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1517 ir_node *const addr = create_symconst(dbgi, entity->variable.v.entity);
1521 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
1522 case DECLARATION_KIND_PARAMETER_ENTITY: {
1523 ir_entity *irentity = entity->variable.v.entity;
1524 ir_node *frame = get_local_frame(irentity);
1525 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1529 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1530 return entity->variable.v.vla_base;
1532 case DECLARATION_KIND_FUNCTION: {
1533 return create_symconst(dbgi, entity->function.irentity);
1536 case DECLARATION_KIND_INNER_FUNCTION: {
1537 type_t *const type = skip_typeref(entity->declaration.type);
1538 ir_mode *const mode = get_ir_mode_storage(type);
1539 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1540 /* inner function not using the closure */
1541 return create_symconst(dbgi, entity->function.irentity);
1543 /* need trampoline here */
1544 return create_trampoline(dbgi, mode, entity->function.irentity);
1548 case DECLARATION_KIND_COMPOUND_MEMBER:
1549 panic("not implemented reference type");
1552 panic("reference to declaration with unknown type");
1555 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1557 dbg_info *const dbgi = get_dbg_info(&ref->base.pos);
1558 entity_t *const entity = ref->entity;
1559 assert(is_declaration(entity));
1561 switch ((declaration_kind_t)entity->declaration.kind) {
1562 case DECLARATION_KIND_LOCAL_VARIABLE:
1563 case DECLARATION_KIND_PARAMETER: {
1564 type_t *const type = skip_typeref(entity->declaration.type);
1565 ir_mode *const mode = get_ir_mode_storage(type);
1566 return get_value(entity->variable.v.value_number, mode);
1570 ir_node *const addr = reference_addr(ref);
1571 return deref_address(dbgi, entity->declaration.type, addr);
1577 * Transform calls to builtin functions.
1579 static ir_node *process_builtin_call(const call_expression_t *call)
1581 dbg_info *dbgi = get_dbg_info(&call->base.pos);
1583 assert(call->function->kind == EXPR_REFERENCE);
1584 reference_expression_t *builtin = &call->function->reference;
1586 type_t *expr_type = skip_typeref(builtin->base.type);
1587 assert(is_type_pointer(expr_type));
1589 type_t *function_type = skip_typeref(expr_type->pointer.points_to);
1591 switch (builtin->entity->function.btk) {
1594 case BUILTIN_ALLOCA: {
1595 expression_t *argument = call->arguments->expression;
1596 ir_node *size = expression_to_value(argument);
1598 ir_node *store = get_store();
1599 ir_node *alloca = new_d_Alloc(dbgi, store, size, get_unknown_type(),
1601 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1603 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1608 type_t *type = function_type->function.return_type;
1609 ir_mode *mode = get_ir_mode_storage(type);
1610 ir_tarval *tv = get_mode_infinite(mode);
1611 ir_node *res = new_d_Const(dbgi, tv);
1615 /* Ignore string for now... */
1616 assert(is_type_function(function_type));
1617 type_t *type = function_type->function.return_type;
1618 ir_mode *mode = get_ir_mode_storage(type);
1619 ir_tarval *tv = get_mode_NAN(mode);
1620 ir_node *res = new_d_Const(dbgi, tv);
1623 case BUILTIN_EXPECT: {
1624 expression_t *argument = call->arguments->expression;
1625 return expression_to_value(argument);
1627 case BUILTIN_VA_END:
1628 /* evaluate the argument of va_end for its side effects */
1629 expression_to_value(call->arguments->expression);
1631 case BUILTIN_OBJECT_SIZE: {
1632 /* determine value of "type" */
1633 expression_t *type_expression = call->arguments->next->expression;
1634 long type_val = fold_constant_to_int(type_expression);
1635 type_t *type = function_type->function.return_type;
1636 ir_mode *mode = get_ir_mode_storage(type);
1637 /* just produce a "I don't know" result */
1638 ir_tarval *result = type_val & 2 ? get_mode_null(mode) :
1639 get_mode_minus_one(mode);
1641 return new_d_Const(dbgi, result);
1643 case BUILTIN_ROTL: {
1644 ir_node *val = expression_to_value(call->arguments->expression);
1645 ir_node *shf = expression_to_value(call->arguments->next->expression);
1646 ir_mode *mode = get_irn_mode(val);
1647 ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
1648 return new_d_Rotl(dbgi, val, create_conv(dbgi, shf, mode_uint), mode);
1650 case BUILTIN_ROTR: {
1651 ir_node *val = expression_to_value(call->arguments->expression);
1652 ir_node *shf = expression_to_value(call->arguments->next->expression);
1653 ir_mode *mode = get_irn_mode(val);
1654 ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
1655 ir_node *c = new_Const_long(mode_uint, get_mode_size_bits(mode));
1656 ir_node *sub = new_d_Sub(dbgi, c, create_conv(dbgi, shf, mode_uint), mode_uint);
1657 return new_d_Rotl(dbgi, val, sub, mode);
1662 case BUILTIN_LIBC_CHECK:
1663 panic("builtin did not produce an entity");
1665 panic("invalid builtin");
1668 static ir_node *complex_to_memory(dbg_info *dbgi, type_t *type,
1669 complex_value value);
1672 * Transform a call expression.
1673 * Handles some special cases, like alloca() calls, which must be resolved
1674 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1675 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1678 static ir_node *call_expression_to_firm(const call_expression_t *const call)
1680 dbg_info *const dbgi = get_dbg_info(&call->base.pos);
1681 assert(currently_reachable());
1683 expression_t *function = call->function;
1684 ir_node *callee = NULL;
1685 bool firm_builtin = false;
1686 ir_builtin_kind firm_builtin_kind = ir_bk_trap;
1687 if (function->kind == EXPR_REFERENCE) {
1688 const reference_expression_t *ref = &function->reference;
1689 entity_t *entity = ref->entity;
1691 if (entity->kind == ENTITY_FUNCTION) {
1692 builtin_kind_t builtin = entity->function.btk;
1693 if (builtin == BUILTIN_FIRM) {
1694 firm_builtin = true;
1695 firm_builtin_kind = entity->function.b.firm_builtin_kind;
1696 } else if (builtin != BUILTIN_NONE && builtin != BUILTIN_LIBC
1697 && builtin != BUILTIN_LIBC_CHECK) {
1698 return process_builtin_call(call);
1703 callee = expression_to_value(function);
1705 type_t *type = skip_typeref(function->base.type);
1706 assert(is_type_pointer(type));
1707 pointer_type_t *pointer_type = &type->pointer;
1708 type_t *points_to = skip_typeref(pointer_type->points_to);
1709 assert(is_type_function(points_to));
1710 function_type_t *function_type = &points_to->function;
1712 int n_parameters = 0;
1713 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1714 ir_type *new_method_type = NULL;
1715 if (function_type->variadic || function_type->unspecified_parameters) {
1716 const call_argument_t *argument = call->arguments;
1717 for ( ; argument != NULL; argument = argument->next) {
1721 /* we need to construct a new method type matching the call
1723 type_dbg_info *tdbgi = get_type_dbg_info_((const type_t*) function_type);
1724 int n_res = get_method_n_ress(ir_method_type);
1725 new_method_type = new_d_type_method(n_parameters, n_res, tdbgi);
1726 set_method_calling_convention(new_method_type,
1727 get_method_calling_convention(ir_method_type));
1728 set_method_additional_properties(new_method_type,
1729 get_method_additional_properties(ir_method_type));
1730 set_method_variadicity(new_method_type,
1731 get_method_variadicity(ir_method_type));
1733 for (int i = 0; i < n_res; ++i) {
1734 set_method_res_type(new_method_type, i,
1735 get_method_res_type(ir_method_type, i));
1737 argument = call->arguments;
1738 for (int i = 0; i < n_parameters; ++i, argument = argument->next) {
1739 expression_t *expression = argument->expression;
1740 ir_type *irtype = get_ir_type(expression->base.type);
1741 set_method_param_type(new_method_type, i, irtype);
1743 ir_method_type = new_method_type;
1745 n_parameters = get_method_n_params(ir_method_type);
1748 ir_node *in[n_parameters];
1750 const call_argument_t *argument = call->arguments;
1751 for (int n = 0; n < n_parameters; ++n) {
1752 expression_t *expression = argument->expression;
1753 type_t *const arg_type = skip_typeref(expression->base.type);
1754 if (is_type_complex(arg_type)) {
1755 complex_value value = expression_to_complex(expression);
1756 in[n] = complex_to_memory(dbgi, arg_type, value);
1758 in[n] = conv_to_storage_type(dbgi, expression_to_value(expression), arg_type);
1761 argument = argument->next;
1765 if (function_type->modifiers & DM_CONST) {
1766 store = get_irg_no_mem(current_ir_graph);
1768 store = get_store();
1772 type_t *return_type = skip_typeref(function_type->return_type);
1773 ir_node *result = NULL;
1775 node = new_d_Builtin(dbgi, store, n_parameters, in, firm_builtin_kind,
1777 if (! (function_type->modifiers & DM_CONST)) {
1778 ir_node *mem = new_Proj(node, mode_M, pn_Builtin_M);
1782 if (!is_type_void(return_type)) {
1783 assert(is_type_scalar(return_type));
1784 ir_mode *mode = get_ir_mode_storage(return_type);
1785 result = new_Proj(node, mode, pn_Builtin_max+1);
1788 node = new_d_Call(dbgi, store, callee, n_parameters, in, ir_method_type);
1789 if (! (function_type->modifiers & DM_CONST)) {
1790 ir_node *mem = new_Proj(node, mode_M, pn_Call_M);
1794 if (!is_type_void(return_type)) {
1795 ir_node *const resproj = new_Proj(node, mode_T, pn_Call_T_result);
1796 ir_mode *const mode = get_ir_mode_storage(return_type);
1797 result = new_Proj(resproj, mode, 0);
1801 if (function_type->modifiers & DM_NORETURN) {
1802 /* A dead end: Keep the Call and the Block. Also place all further
1803 * nodes into a new and unreachable block. */
1805 keep_alive(get_cur_block());
1806 ir_node *block = new_Block(0, NULL);
1807 set_cur_block(block);
1813 static ir_node *statement_to_firm(statement_t *statement);
1814 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1815 static ir_node *expression_to_addr(const expression_t *expression);
1817 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1820 value = conv_to_storage_type(dbgi, value, type);
1822 ir_node *memory = get_store();
1824 if (is_type_scalar(type) && !is_type_complex(type)) {
1825 ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
1826 ? cons_volatile : cons_none;
1827 ir_node *store = new_d_Store(dbgi, memory, addr, value, flags);
1828 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1829 set_store(store_mem);
1831 ir_type *irtype = get_ir_type(type);
1832 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1833 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
1834 set_store(copyb_mem);
1838 static ir_tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1840 ir_tarval *all_one = get_mode_all_one(mode);
1841 int mode_size = get_mode_size_bits(mode);
1842 ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
1844 assert(offset >= 0);
1846 assert(offset + size <= mode_size);
1847 if (size == mode_size) {
1851 long shiftr = get_mode_size_bits(mode) - size;
1852 long shiftl = offset;
1853 ir_tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1854 ir_tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1855 ir_tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1856 ir_tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1861 static ir_node *bitfield_store_to_firm(dbg_info *dbgi,
1862 ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile,
1865 ir_type *entity_type = get_entity_type(entity);
1866 ir_type *base_type = get_primitive_base_type(entity_type);
1867 ir_mode *mode = get_type_mode(base_type);
1868 ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
1870 value = create_conv(dbgi, value, mode);
1872 /* kill upper bits of value and shift to right position */
1873 unsigned bitoffset = get_entity_offset_bits_remainder(entity);
1874 unsigned bitsize = get_mode_size_bits(get_type_mode(entity_type));
1875 unsigned base_bits = get_mode_size_bits(mode);
1876 unsigned shiftwidth = base_bits - bitsize;
1878 ir_node *shiftcount = new_Const_long(mode_uint, shiftwidth);
1879 ir_node *shiftl = new_d_Shl(dbgi, value, shiftcount, mode);
1881 unsigned shrwidth = base_bits - bitsize - bitoffset;
1882 ir_node *shrconst = new_Const_long(mode_uint, shrwidth);
1883 ir_node *shiftr = new_d_Shr(dbgi, shiftl, shrconst, mode);
1885 /* load current value */
1886 ir_node *mem = get_store();
1887 ir_node *load = new_d_Load(dbgi, mem, addr, mode,
1888 set_volatile ? cons_volatile : cons_none);
1889 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1890 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1891 ir_tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1892 ir_tarval *inv_mask = tarval_not(shift_mask);
1893 ir_node *inv_mask_node = new_d_Const(dbgi, inv_mask);
1894 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1896 /* construct new value and store */
1897 ir_node *new_val = new_d_Or(dbgi, load_res_masked, shiftr, mode);
1898 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val,
1899 set_volatile ? cons_volatile : cons_none);
1900 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1901 set_store(store_mem);
1907 ir_node *count_res_shr = new_Const_long(mode_uint, base_bits - bitsize);
1908 if (mode_is_signed(mode)) {
1909 res_shr = new_d_Shrs(dbgi, shiftl, count_res_shr, mode);
1911 res_shr = new_d_Shr(dbgi, shiftl, count_res_shr, mode);
1916 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
1919 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
1920 entity_t *entity = expression->compound_entry;
1921 type_t *base_type = entity->declaration.type;
1922 ir_mode *mode = get_ir_mode_storage(base_type);
1923 ir_node *mem = get_store();
1924 ir_node *load = new_d_Load(dbgi, mem, addr, mode, cons_none);
1925 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1926 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1927 ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
1929 ir_mode *amode = mode;
1930 /* optimisation, since shifting in modes < machine_size is usually
1932 if (get_mode_size_bits(amode) < get_mode_size_bits(mode_uint)) {
1935 unsigned amode_size = get_mode_size_bits(amode);
1936 load_res = create_conv(dbgi, load_res, amode);
1938 set_store(load_mem);
1940 /* kill upper bits */
1941 assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER);
1942 unsigned bitoffset = entity->compound_member.bit_offset;
1943 unsigned bitsize = entity->compound_member.bit_size;
1944 unsigned shift_bitsl = amode_size - bitoffset - bitsize;
1945 ir_tarval *tvl = new_tarval_from_long((long)shift_bitsl, mode_uint);
1946 ir_node *countl = new_d_Const(dbgi, tvl);
1947 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, amode);
1949 unsigned shift_bitsr = bitoffset + shift_bitsl;
1950 assert(shift_bitsr <= amode_size);
1951 ir_tarval *tvr = new_tarval_from_long((long)shift_bitsr, mode_uint);
1952 ir_node *countr = new_d_Const(dbgi, tvr);
1954 if (mode_is_signed(mode)) {
1955 shiftr = new_d_Shrs(dbgi, shiftl, countr, amode);
1957 shiftr = new_d_Shr(dbgi, shiftl, countr, amode);
1960 return conv_to_storage_type(dbgi, shiftr, expression->base.type);
1963 /* make sure the selected compound type is constructed */
1964 static void construct_select_compound(const select_expression_t *expression)
1966 type_t *type = skip_typeref(expression->compound->base.type);
1967 if (is_type_pointer(type)) {
1968 type = type->pointer.points_to;
1970 (void) get_ir_type(type);
1973 static ir_node *set_value_for_expression_addr(const expression_t *expression,
1974 ir_node *value, ir_node *addr)
1976 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
1977 type_t *type = skip_typeref(expression->base.type);
1978 value = conv_to_storage_type(dbgi, value, type);
1980 if (expression->kind == EXPR_REFERENCE) {
1981 const reference_expression_t *ref = &expression->reference;
1983 entity_t *entity = ref->entity;
1984 assert(is_declaration(entity));
1985 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
1986 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE ||
1987 entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
1988 set_value(entity->variable.v.value_number, value);
1994 addr = expression_to_addr(expression);
1995 assert(addr != NULL);
1997 if (expression->kind == EXPR_SELECT) {
1998 const select_expression_t *select = &expression->select;
2000 construct_select_compound(select);
2002 entity_t *entity = select->compound_entry;
2003 assert(entity->kind == ENTITY_COMPOUND_MEMBER);
2004 if (entity->compound_member.bitfield) {
2005 ir_entity *irentity = entity->compound_member.entity;
2007 = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
2008 value = bitfield_store_to_firm(dbgi, irentity, addr, value,
2009 set_volatile, true);
2014 assign_value(dbgi, addr, type, value);
2018 static ir_node *get_value_from_lvalue(const expression_t *expression,
2021 if (expression->kind == EXPR_REFERENCE) {
2022 const reference_expression_t *ref = &expression->reference;
2024 entity_t *entity = ref->entity;
2025 assert(entity->kind == ENTITY_VARIABLE
2026 || entity->kind == ENTITY_PARAMETER);
2027 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2029 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE ||
2030 entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
2031 value_number = entity->variable.v.value_number;
2032 assert(addr == NULL);
2033 type_t *type = skip_typeref(expression->base.type);
2034 ir_mode *mode = get_ir_mode_storage(type);
2035 return get_value(value_number, mode);
2039 assert(addr != NULL);
2040 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
2043 if (expression->kind == EXPR_SELECT &&
2044 expression->select.compound_entry->compound_member.bitfield) {
2045 construct_select_compound(&expression->select);
2046 value = bitfield_extract_to_firm(&expression->select, addr);
2048 value = deref_address(dbgi, expression->base.type, addr);
2054 static ir_node *incdec_to_firm(unary_expression_t const *const expr, bool const inc, bool const pre)
2056 type_t *const type = skip_typeref(expr->base.type);
2057 ir_mode *const mode = get_ir_mode_arithmetic(type);
2060 if (is_type_pointer(type)) {
2061 offset = get_type_size_node(type->pointer.points_to);
2063 assert(is_type_arithmetic(type));
2064 offset = new_Const(get_mode_one(mode));
2067 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
2068 expression_t const *const value_expr = expr->value;
2069 ir_node *const addr = expression_to_addr(value_expr);
2070 ir_node *const value = get_value_from_lvalue(value_expr, addr);
2071 ir_node *const value_arith = create_conv(dbgi, value, mode);
2072 ir_node *const new_value = inc
2073 ? new_d_Add(dbgi, value_arith, offset, mode)
2074 : new_d_Sub(dbgi, value_arith, offset, mode);
2076 ir_node *const store_value = set_value_for_expression_addr(value_expr, new_value, addr);
2077 return pre ? store_value : value;
2080 static bool is_local_variable(expression_t *expression)
2082 if (expression->kind != EXPR_REFERENCE)
2084 reference_expression_t *ref_expr = &expression->reference;
2085 entity_t *entity = ref_expr->entity;
2086 if (entity->kind != ENTITY_VARIABLE)
2088 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2089 return entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE;
2092 static ir_relation get_relation(const expression_kind_t kind)
2095 case EXPR_BINARY_EQUAL: return ir_relation_equal;
2096 case EXPR_BINARY_ISLESSGREATER: return ir_relation_less_greater;
2097 case EXPR_BINARY_NOTEQUAL: return ir_relation_unordered_less_greater;
2098 case EXPR_BINARY_ISLESS:
2099 case EXPR_BINARY_LESS: return ir_relation_less;
2100 case EXPR_BINARY_ISLESSEQUAL:
2101 case EXPR_BINARY_LESSEQUAL: return ir_relation_less_equal;
2102 case EXPR_BINARY_ISGREATER:
2103 case EXPR_BINARY_GREATER: return ir_relation_greater;
2104 case EXPR_BINARY_ISGREATEREQUAL:
2105 case EXPR_BINARY_GREATEREQUAL: return ir_relation_greater_equal;
2106 case EXPR_BINARY_ISUNORDERED: return ir_relation_unordered;
2111 panic("trying to get ir_relation from non-comparison binexpr type");
2115 * Handle the assume optimizer hint: check if a Confirm
2116 * node can be created.
2118 * @param dbi debug info
2119 * @param expr the IL assume expression
2121 * we support here only some simple cases:
2126 static ir_node *handle_assume_compare(dbg_info *dbi,
2127 const binary_expression_t *expression)
2129 expression_t *op1 = expression->left;
2130 expression_t *op2 = expression->right;
2131 entity_t *var2, *var = NULL;
2132 ir_node *res = NULL;
2133 ir_relation relation = get_relation(expression->base.kind);
2135 if (is_local_variable(op1) && is_local_variable(op2)) {
2136 var = op1->reference.entity;
2137 var2 = op2->reference.entity;
2139 type_t *const type = skip_typeref(var->declaration.type);
2140 ir_mode *const mode = get_ir_mode_storage(type);
2142 ir_node *const irn1 = get_value(var->variable.v.value_number, mode);
2143 ir_node *const irn2 = get_value(var2->variable.v.value_number, mode);
2145 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_relation(relation));
2146 set_value(var2->variable.v.value_number, res);
2148 res = new_d_Confirm(dbi, irn1, irn2, relation);
2149 set_value(var->variable.v.value_number, res);
2154 expression_t *con = NULL;
2155 if (is_local_variable(op1) && is_constant_expression(op2) != EXPR_CLASS_VARIABLE) {
2156 var = op1->reference.entity;
2158 } else if (is_constant_expression(op1) != EXPR_CLASS_VARIABLE && is_local_variable(op2)) {
2159 relation = get_inversed_relation(relation);
2160 var = op2->reference.entity;
2165 type_t *const type = skip_typeref(var->declaration.type);
2166 ir_mode *const mode = get_ir_mode_storage(type);
2168 res = get_value(var->variable.v.value_number, mode);
2169 res = new_d_Confirm(dbi, res, expression_to_value(con), relation);
2170 set_value(var->variable.v.value_number, res);
2176 * Handle the assume optimizer hint.
2178 * @param dbi debug info
2179 * @param expr the IL assume expression
2181 static ir_node *handle_assume(expression_t const *const expr)
2183 switch (expr->kind) {
2184 case EXPR_BINARY_EQUAL:
2185 case EXPR_BINARY_NOTEQUAL:
2186 case EXPR_BINARY_LESS:
2187 case EXPR_BINARY_LESSEQUAL:
2188 case EXPR_BINARY_GREATER:
2189 case EXPR_BINARY_GREATEREQUAL: {
2190 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
2191 return handle_assume_compare(dbgi, &expr->binary);
2199 static ir_node *create_cast(unary_expression_t const *const expr)
2201 type_t *const from_type = skip_typeref(expr->value->base.type);
2202 ir_node *value = is_type_complex(from_type)
2203 ? expression_to_complex(expr->value).real
2204 : expression_to_value(expr->value);
2206 type_t *const type = skip_typeref(expr->base.type);
2207 if (is_type_void(type))
2210 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
2211 ir_mode *const mode = get_ir_mode_storage(type);
2212 /* check for conversion from / to __based types */
2213 if (is_type_pointer(type) && is_type_pointer(from_type)) {
2214 const variable_t *from_var = from_type->pointer.base_variable;
2215 const variable_t *to_var = type->pointer.base_variable;
2216 if (from_var != to_var) {
2217 if (from_var != NULL) {
2218 ir_node *const addr = create_symconst(dbgi, from_var->v.entity);
2219 ir_node *const base = deref_address(dbgi, from_var->base.type, addr);
2220 value = new_d_Add(dbgi, value, base, mode);
2222 if (to_var != NULL) {
2223 ir_node *const addr = create_symconst(dbgi, to_var->v.entity);
2224 ir_node *const base = deref_address(dbgi, to_var->base.type, addr);
2225 value = new_d_Sub(dbgi, value, base, mode);
2230 return create_conv(dbgi, value, mode);
2233 static ir_node *complement_to_firm(unary_expression_t const *const expr)
2235 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
2236 type_t *const type = skip_typeref(expr->base.type);
2237 ir_mode *const mode = get_ir_mode_arithmetic(type);
2238 ir_node *const value = create_conv(dbgi, expression_to_value(expr->value), mode);
2239 return new_d_Not(dbgi, value, mode);
2242 static ir_node *dereference_to_firm(unary_expression_t const *const expr)
2244 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
2245 ir_node *value = expression_to_value(expr->value);
2246 type_t *const value_type = skip_typeref(expr->value->base.type);
2247 assert(is_type_pointer(value_type));
2249 /* check for __based */
2250 variable_t const *const base_var = value_type->pointer.base_variable;
2252 ir_node *const addr = create_symconst(dbgi, base_var->v.entity);
2253 ir_node *const base = deref_address(dbgi, base_var->base.type, addr);
2254 value = new_d_Add(dbgi, value, base, get_ir_mode_storage(value_type));
2256 type_t *const points_to = value_type->pointer.points_to;
2257 return deref_address(dbgi, points_to, value);
2260 static ir_node *negate_to_firm(unary_expression_t const *const expr)
2262 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
2263 type_t *const type = skip_typeref(expr->base.type);
2264 ir_mode *const mode = get_ir_mode_arithmetic(type);
2265 ir_node *const value = create_conv(dbgi, expression_to_value(expr->value), mode);
2266 return new_d_Minus(dbgi, value, mode);
2269 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2270 ir_node *value, type_t *type)
2272 ir_mode *const mode = get_ir_mode_storage(type_ptrdiff_t);
2273 assert(is_type_pointer(type));
2274 pointer_type_t *const pointer_type = &type->pointer;
2275 type_t *const points_to = skip_typeref(pointer_type->points_to);
2276 ir_node * elem_size = get_type_size_node(points_to);
2277 elem_size = create_conv(dbgi, elem_size, mode);
2278 value = create_conv(dbgi, value, mode);
2279 ir_node *const mul = new_d_Mul(dbgi, value, elem_size, mode);
2283 static ir_node *create_div(dbg_info *dbgi, ir_node *left, ir_node *right,
2286 ir_node *pin = new_Pin(new_NoMem());
2287 ir_node *op = new_d_Div(dbgi, pin, left, right, mode,
2288 op_pin_state_floats);
2289 return new_d_Proj(dbgi, op, mode, pn_Div_res);
2292 static ir_node *create_op(binary_expression_t const *const expr, ir_node *left, ir_node *right)
2295 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
2296 type_t *const type_left = skip_typeref(expr->left->base.type);
2297 type_t *const type_right = skip_typeref(expr->right->base.type);
2298 expression_kind_t const kind = expr->base.kind;
2300 case EXPR_BINARY_SHIFTLEFT:
2301 case EXPR_BINARY_SHIFTRIGHT:
2302 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2303 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2304 mode = get_ir_mode_arithmetic(expr->base.type);
2305 left = create_conv(dbgi, left, mode);
2306 right = create_conv(dbgi, right, atomic_modes[ATOMIC_TYPE_UINT]);
2309 case EXPR_BINARY_SUB:
2310 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2311 const pointer_type_t *const ptr_type = &type_left->pointer;
2313 mode = get_ir_mode_storage(expr->base.type);
2314 ir_node *const elem_size = get_type_size_node(ptr_type->points_to);
2315 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2316 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2317 ir_node *const no_mem = new_NoMem();
2318 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2319 mode, op_pin_state_floats);
2320 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2323 case EXPR_BINARY_SUB_ASSIGN:
2324 if (is_type_pointer(type_left)) {
2325 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2326 mode = get_ir_mode_storage(type_left);
2331 case EXPR_BINARY_ADD:
2332 case EXPR_BINARY_ADD_ASSIGN:
2333 if (is_type_pointer(type_left)) {
2334 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2335 mode = get_ir_mode_storage(type_left);
2337 } else if (is_type_pointer(type_right)) {
2338 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2339 mode = get_ir_mode_storage(type_right);
2346 mode = get_ir_mode_arithmetic(type_right);
2347 left = create_conv(dbgi, left, mode);
2348 right = create_conv(dbgi, right, mode);
2353 case EXPR_BINARY_ADD_ASSIGN:
2354 case EXPR_BINARY_ADD:
2355 return new_d_Add(dbgi, left, right, mode);
2356 case EXPR_BINARY_SUB_ASSIGN:
2357 case EXPR_BINARY_SUB:
2358 return new_d_Sub(dbgi, left, right, mode);
2359 case EXPR_BINARY_MUL_ASSIGN:
2360 case EXPR_BINARY_MUL:
2361 return new_d_Mul(dbgi, left, right, mode);
2362 case EXPR_BINARY_DIV:
2363 case EXPR_BINARY_DIV_ASSIGN:
2364 return create_div(dbgi, left, right, mode);
2365 case EXPR_BINARY_BITWISE_AND:
2366 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2367 return new_d_And(dbgi, left, right, mode);
2368 case EXPR_BINARY_BITWISE_OR:
2369 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2370 return new_d_Or(dbgi, left, right, mode);
2371 case EXPR_BINARY_BITWISE_XOR:
2372 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2373 return new_d_Eor(dbgi, left, right, mode);
2374 case EXPR_BINARY_SHIFTLEFT:
2375 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2376 return new_d_Shl(dbgi, left, right, mode);
2377 case EXPR_BINARY_SHIFTRIGHT:
2378 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2379 if (mode_is_signed(mode)) {
2380 return new_d_Shrs(dbgi, left, right, mode);
2382 return new_d_Shr(dbgi, left, right, mode);
2384 case EXPR_BINARY_MOD:
2385 case EXPR_BINARY_MOD_ASSIGN: {
2386 ir_node *pin = new_Pin(new_NoMem());
2387 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2388 op_pin_state_floats);
2389 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2393 panic("unexpected expression kind");
2397 static ir_node *binop_to_firm(binary_expression_t const *const expr)
2399 ir_node *const left = expression_to_value(expr->left);
2400 ir_node *const right = expression_to_value(expr->right);
2401 return create_op(expr, left, right);
2405 * Check if a given expression is a GNU __builtin_expect() call.
2407 static bool is_builtin_expect(const expression_t *expression)
2409 if (expression->kind != EXPR_CALL)
2412 expression_t *function = expression->call.function;
2413 if (function->kind != EXPR_REFERENCE)
2415 reference_expression_t *ref = &function->reference;
2416 if (ref->entity->kind != ENTITY_FUNCTION ||
2417 ref->entity->function.btk != BUILTIN_EXPECT)
2423 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)
2425 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
2426 ir_node *const cmp = new_d_Cmp(dbgi, left, right, relation);
2427 if (is_Const(cmp)) {
2428 if (tarval_is_null(get_Const_tarval(cmp))) {
2429 jump_to_target(false_target);
2431 jump_to_target(true_target);
2434 ir_node *const cond = new_d_Cond(dbgi, cmp);
2435 ir_node *const true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
2436 ir_node *const false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
2438 /* set branch prediction info based on __builtin_expect */
2439 if (is_builtin_expect(expr) && is_Cond(cond)) {
2440 call_argument_t *const argument = expr->call.arguments->next;
2441 if (is_constant_expression(argument->expression) != EXPR_CLASS_VARIABLE) {
2442 bool const cnst = fold_constant_to_bool(argument->expression);
2443 cond_jmp_predicate const pred = cnst ? COND_JMP_PRED_TRUE : COND_JMP_PRED_FALSE;
2444 set_Cond_jmp_pred(cond, pred);
2448 add_pred_to_jump_target(true_target, true_proj);
2449 add_pred_to_jump_target(false_target, false_proj);
2451 set_unreachable_now();
2454 static ir_node *control_flow_to_1_0(expression_t const *const expr, jump_target *const true_target, jump_target *const false_target)
2456 ir_node *val = NULL;
2457 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
2458 ir_mode *const mode = get_ir_mode_storage(expr->base.type);
2459 jump_target exit_target;
2460 init_jump_target(&exit_target, NULL);
2462 if (enter_jump_target(true_target)) {
2463 jump_to_target(&exit_target);
2464 val = new_d_Const(dbgi, get_mode_one(mode));
2467 if (enter_jump_target(false_target)) {
2468 jump_to_target(&exit_target);
2469 ir_node *const zero = new_d_Const(dbgi, get_mode_null(mode));
2471 ir_node *const in[] = { val, zero };
2472 val = new_rd_Phi(dbgi, exit_target.block, lengthof(in), in, mode);
2478 if (!enter_jump_target(&exit_target)) {
2479 set_cur_block(new_Block(0, NULL));
2480 val = new_d_Bad(dbgi, mode);
2485 static ir_node *binop_assign_to_firm(binary_expression_t const *const expr)
2487 ir_node *const right = expression_to_value(expr->right);
2488 expression_t const *const left_expr = expr->left;
2489 ir_node *const addr = expression_to_addr(left_expr);
2490 ir_node *const left = get_value_from_lvalue(left_expr, addr);
2491 ir_node *result = create_op(expr, left, right);
2493 type_t *const type = skip_typeref(expr->base.type);
2494 if (is_type_atomic(type, ATOMIC_TYPE_BOOL)) {
2495 jump_target true_target;
2496 jump_target false_target;
2497 init_jump_target(&true_target, NULL);
2498 init_jump_target(&false_target, NULL);
2499 ir_mode *const mode = get_irn_mode(result);
2500 ir_node *const zero = new_Const(get_mode_null(mode));
2501 compare_to_control_flow((expression_t const*)expr, result, zero, ir_relation_unordered_less_greater, &true_target, &false_target);
2502 result = control_flow_to_1_0((expression_t const*)expr, &true_target, &false_target);
2505 return set_value_for_expression_addr(left_expr, result, addr);
2508 static ir_node *assign_expression_to_firm(binary_expression_t const *const expr)
2510 ir_node *const addr = expression_to_addr(expr->left);
2511 ir_node *const right = expression_to_value(expr->right);
2512 return set_value_for_expression_addr(expr->left, right, addr);
2515 /** evaluate an expression and discard the result, but still produce the
2517 static void evaluate_expression_discard_result(const expression_t *expression)
2519 type_t *type = skip_typeref(expression->base.type);
2520 if (is_type_complex(type)) {
2521 expression_to_complex(expression);
2523 expression_to_value(expression);
2527 static ir_node *comma_expression_to_firm(binary_expression_t const *const expr)
2529 evaluate_expression_discard_result(expr->left);
2530 return expression_to_value(expr->right);
2533 static ir_node *array_access_addr(const array_access_expression_t *expression)
2535 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
2536 ir_node *base_addr = expression_to_value(expression->array_ref);
2537 ir_node *offset = expression_to_value(expression->index);
2538 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2539 ir_node *real_offset = adjust_for_pointer_arithmetic(dbgi, offset, ref_type);
2540 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2545 static ir_node *array_access_to_firm(
2546 const array_access_expression_t *expression)
2548 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
2549 ir_node *addr = array_access_addr(expression);
2550 type_t *type = revert_automatic_type_conversion(
2551 (const expression_t*) expression);
2552 type = skip_typeref(type);
2554 return deref_address(dbgi, type, addr);
2557 static long get_offsetof_offset(const offsetof_expression_t *expression)
2559 type_t *orig_type = expression->type;
2562 designator_t *designator = expression->designator;
2563 for ( ; designator != NULL; designator = designator->next) {
2564 type_t *type = skip_typeref(orig_type);
2565 /* be sure the type is constructed */
2566 (void) get_ir_type(type);
2568 if (designator->symbol != NULL) {
2569 assert(is_type_compound(type));
2570 symbol_t *symbol = designator->symbol;
2572 compound_t *compound = type->compound.compound;
2573 entity_t *iter = compound->members.entities;
2574 for (; iter->base.symbol != symbol; iter = iter->base.next) {}
2576 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
2577 assert(iter->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2578 offset += get_entity_offset(iter->compound_member.entity);
2580 orig_type = iter->declaration.type;
2582 expression_t *array_index = designator->array_index;
2583 assert(designator->array_index != NULL);
2584 assert(is_type_array(type));
2586 long index = fold_constant_to_int(array_index);
2587 ir_type *arr_type = get_ir_type(type);
2588 ir_type *elem_type = get_array_element_type(arr_type);
2589 long elem_size = get_type_size_bytes(elem_type);
2591 offset += index * elem_size;
2593 orig_type = type->array.element_type;
2600 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2602 ir_mode *mode = get_ir_mode_storage(expression->base.type);
2603 long offset = get_offsetof_offset(expression);
2604 ir_tarval *tv = new_tarval_from_long(offset, mode);
2605 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
2607 return new_d_Const(dbgi, tv);
2610 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2611 ir_entity *entity, type_t *type);
2612 static ir_initializer_t *create_ir_initializer(
2613 const initializer_t *initializer, type_t *type);
2615 static ir_entity *create_initializer_entity(dbg_info *dbgi,
2616 initializer_t *initializer,
2619 /* create the ir_initializer */
2620 PUSH_IRG(get_const_code_irg());
2621 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
2624 ident *const id = id_unique("initializer.%u");
2625 ir_type *const irtype = get_ir_type(type);
2626 ir_type *const global_type = get_glob_type();
2627 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
2628 set_entity_ld_ident(entity, id);
2629 set_entity_visibility(entity, ir_visibility_private);
2630 add_entity_linkage(entity, IR_LINKAGE_CONSTANT);
2631 set_entity_initializer(entity, irinitializer);
2635 static ir_node *compound_literal_addr(compound_literal_expression_t const *const expression)
2637 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
2638 type_t *type = expression->type;
2639 initializer_t *initializer = expression->initializer;
2641 if (expression->global_scope || (
2642 type->base.qualifiers & TYPE_QUALIFIER_CONST &&
2643 is_constant_initializer(initializer) != EXPR_CLASS_VARIABLE
2645 ir_entity *entity = create_initializer_entity(dbgi, initializer, type);
2646 return create_symconst(dbgi, entity);
2648 /* create an entity on the stack */
2649 ident *const id = id_unique("CompLit.%u");
2650 ir_type *const irtype = get_ir_type(type);
2651 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2653 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2654 set_entity_ld_ident(entity, id);
2656 /* create initialisation code */
2657 create_local_initializer(initializer, dbgi, entity, type);
2659 /* create a sel for the compound literal address */
2660 ir_node *frame = get_irg_frame(current_ir_graph);
2661 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2666 static ir_node *compound_literal_to_firm(compound_literal_expression_t const* const expr)
2668 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
2669 type_t *const type = expr->type;
2670 ir_node *const addr = compound_literal_addr(expr);
2671 return deref_address(dbgi, type, addr);
2675 * Transform a sizeof expression into Firm code.
2677 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2679 type_t *const type = skip_typeref(expression->type);
2680 /* ยง6.5.3.4:2 if the type is a VLA, evaluate the expression. */
2681 if (is_type_array(type) && type->array.is_vla
2682 && expression->tp_expression != NULL) {
2683 expression_to_value(expression->tp_expression);
2686 return get_type_size_node(type);
2689 static unsigned get_object_alignment(expression_t const *expr);
2691 static unsigned get_address_alignment(expression_t const *const expr)
2693 if (expr->kind == EXPR_UNARY_TAKE_ADDRESS) {
2694 return get_object_alignment(expr->unary.value);
2696 type_t *const type = skip_typeref(expr->base.type);
2697 assert(is_type_pointer(type));
2698 return get_type_alignment(type->pointer.points_to);
2702 static unsigned get_object_alignment(expression_t const *const expr)
2705 switch (expr->kind) {
2706 case EXPR_ARRAY_ACCESS: return get_address_alignment(expr->array_access.array_ref);
2707 case EXPR_UNARY_DEREFERENCE: return get_address_alignment(expr->unary.value);
2708 case EXPR_REFERENCE: ent = expr->reference.entity; break;
2709 case EXPR_SELECT: ent = expr->select.compound_entry; break;
2710 default: return get_type_alignment(expr->base.type);
2712 assert(is_declaration(ent));
2713 return ent->declaration.alignment;
2717 * Transform an alignof expression into Firm code.
2719 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2721 unsigned const alignment = expression->tp_expression
2722 ? get_object_alignment(expression->tp_expression)
2723 : get_type_alignment(expression->type);
2725 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
2726 ir_mode *mode = get_ir_mode_storage(expression->base.type);
2727 ir_tarval *tv = new_tarval_from_long(alignment, mode);
2728 return new_d_Const(dbgi, tv);
2731 static void init_ir_types(void);
2733 ir_tarval *fold_constant_to_tarval(const expression_t *expression)
2735 assert(is_constant_expression(expression) >= EXPR_CLASS_CONSTANT);
2737 bool constant_folding_old = constant_folding;
2738 constant_folding = true;
2739 int old_optimize = get_optimize();
2740 int old_constant_folding = get_opt_constant_folding();
2742 set_opt_constant_folding(1);
2746 PUSH_IRG(get_const_code_irg());
2747 ir_node *const cnst = expression_to_value(expression);
2750 set_optimize(old_optimize);
2751 set_opt_constant_folding(old_constant_folding);
2752 constant_folding = constant_folding_old;
2754 if (!is_Const(cnst))
2755 panic("couldn't fold constant");
2756 return get_Const_tarval(cnst);
2759 static complex_constant fold_complex_constant(const expression_t *expression)
2761 assert(is_constant_expression(expression) >= EXPR_CLASS_CONSTANT);
2763 bool constant_folding_old = constant_folding;
2764 constant_folding = true;
2765 int old_optimize = get_optimize();
2766 int old_constant_folding = get_opt_constant_folding();
2768 set_opt_constant_folding(1);
2772 PUSH_IRG(get_const_code_irg());
2773 complex_value value = expression_to_complex(expression);
2776 set_optimize(old_optimize);
2777 set_opt_constant_folding(old_constant_folding);
2779 if (!is_Const(value.real) || !is_Const(value.imag)) {
2780 panic("couldn't fold constant");
2783 constant_folding = constant_folding_old;
2785 return (complex_constant) {
2786 get_Const_tarval(value.real),
2787 get_Const_tarval(value.imag)
2791 /* this function is only used in parser.c, but it relies on libfirm functionality */
2792 bool constant_is_negative(const expression_t *expression)
2794 ir_tarval *tv = fold_constant_to_tarval(expression);
2795 return tarval_is_negative(tv);
2798 long fold_constant_to_int(const expression_t *expression)
2800 ir_tarval *tv = fold_constant_to_tarval(expression);
2801 if (!tarval_is_long(tv)) {
2802 panic("result of constant folding is not integer");
2805 return get_tarval_long(tv);
2808 bool fold_constant_to_bool(const expression_t *expression)
2810 type_t *type = skip_typeref(expression->base.type);
2811 if (is_type_complex(type)) {
2812 complex_constant tvs = fold_complex_constant(expression);
2813 return !tarval_is_null(tvs.real) || !tarval_is_null(tvs.imag);
2815 ir_tarval *tv = fold_constant_to_tarval(expression);
2816 return !tarval_is_null(tv);
2820 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2822 jump_target true_target;
2823 jump_target false_target;
2824 init_jump_target(&true_target, NULL);
2825 init_jump_target(&false_target, NULL);
2826 ir_node *const cond_expr = expression_to_control_flow(expression->condition, &true_target, &false_target);
2828 ir_node *val = NULL;
2829 dbg_info *const dbgi = get_dbg_info(&expression->base.pos);
2830 type_t *const type = skip_typeref(expression->base.type);
2831 ir_mode *const mode = get_ir_mode_arithmetic(type);
2832 jump_target exit_target;
2833 init_jump_target(&exit_target, NULL);
2835 if (enter_jump_target(&true_target)) {
2836 if (expression->true_expression) {
2837 val = expression_to_value(expression->true_expression);
2838 } else if (cond_expr) {
2841 /* Condition ended with a short circuit (&&, ||, !) operation or a
2842 * comparison. Generate a "1" as value for the true branch. */
2843 val = new_Const(get_mode_one(mode));
2846 val = create_conv(dbgi, val, mode);
2847 jump_to_target(&exit_target);
2850 if (enter_jump_target(&false_target)) {
2851 ir_node *false_val = expression_to_value(expression->false_expression);
2853 false_val = create_conv(dbgi, false_val, mode);
2854 jump_to_target(&exit_target);
2856 ir_node *const in[] = { val, false_val };
2857 val = new_rd_Phi(dbgi, exit_target.block, lengthof(in), in, get_irn_mode(val));
2863 if (!enter_jump_target(&exit_target)) {
2864 set_cur_block(new_Block(0, NULL));
2865 if (!is_type_void(type))
2866 val = new_Bad(mode);
2872 * Returns an IR-node representing the address of a field.
2874 static ir_node *select_addr(const select_expression_t *expression)
2876 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
2878 construct_select_compound(expression);
2880 ir_node *compound_addr = expression_to_value(expression->compound);
2882 entity_t *entry = expression->compound_entry;
2883 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
2884 assert(entry->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2886 if (constant_folding) {
2887 ir_mode *mode = get_irn_mode(compound_addr);
2888 ir_mode *mode_uint = get_reference_mode_unsigned_eq(mode);
2889 ir_node *ofs = new_Const_long(mode_uint, entry->compound_member.offset);
2890 return new_d_Add(dbgi, compound_addr, ofs, mode);
2892 ir_entity *irentity = entry->compound_member.entity;
2893 assert(irentity != NULL);
2894 return new_d_simpleSel(dbgi, new_NoMem(), compound_addr, irentity);
2898 static ir_node *select_to_firm(const select_expression_t *expression)
2900 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
2901 ir_node *addr = select_addr(expression);
2902 type_t *type = revert_automatic_type_conversion(
2903 (const expression_t*) expression);
2904 type = skip_typeref(type);
2906 entity_t *entry = expression->compound_entry;
2907 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
2909 if (entry->compound_member.bitfield) {
2910 return bitfield_extract_to_firm(expression, addr);
2913 return deref_address(dbgi, type, addr);
2916 /* Values returned by __builtin_classify_type. */
2917 typedef enum gcc_type_class
2923 enumeral_type_class,
2926 reference_type_class,
2930 function_type_class,
2941 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2943 type_t *type = expr->type_expression->base.type;
2945 /* FIXME gcc returns different values depending on whether compiling C or C++
2946 * e.g. int x[10] is pointer_type_class in C, but array_type_class in C++ */
2949 type = skip_typeref(type);
2950 switch (type->kind) {
2952 const atomic_type_t *const atomic_type = &type->atomic;
2953 switch (atomic_type->akind) {
2954 /* gcc cannot do that */
2955 case ATOMIC_TYPE_VOID:
2956 tc = void_type_class;
2959 case ATOMIC_TYPE_WCHAR_T: /* gcc handles this as integer */
2960 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2961 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2962 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2963 case ATOMIC_TYPE_SHORT:
2964 case ATOMIC_TYPE_USHORT:
2965 case ATOMIC_TYPE_INT:
2966 case ATOMIC_TYPE_UINT:
2967 case ATOMIC_TYPE_LONG:
2968 case ATOMIC_TYPE_ULONG:
2969 case ATOMIC_TYPE_LONGLONG:
2970 case ATOMIC_TYPE_ULONGLONG:
2971 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2972 tc = integer_type_class;
2975 case ATOMIC_TYPE_FLOAT:
2976 case ATOMIC_TYPE_DOUBLE:
2977 case ATOMIC_TYPE_LONG_DOUBLE:
2978 tc = real_type_class;
2981 panic("Unexpected atomic type.");
2984 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2985 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2986 case TYPE_ARRAY: /* gcc handles this as pointer */
2987 case TYPE_FUNCTION: /* gcc handles this as pointer */
2988 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2989 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2990 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2992 /* gcc handles this as integer */
2993 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2995 /* gcc classifies the referenced type */
2996 case TYPE_REFERENCE: type = type->reference.refers_to; continue;
2998 /* typedef/typeof should be skipped already */
3004 panic("unexpected type.");
3008 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
3009 ir_mode *const mode = atomic_modes[ATOMIC_TYPE_INT];
3010 ir_tarval *const tv = new_tarval_from_long(tc, mode);
3011 return new_d_Const(dbgi, tv);
3014 static ir_node *function_name_to_firm(
3015 const funcname_expression_t *const expr)
3017 switch (expr->kind) {
3018 case FUNCNAME_FUNCTION:
3019 case FUNCNAME_PRETTY_FUNCTION:
3020 case FUNCNAME_FUNCDNAME:
3021 if (current_function_name == NULL) {
3022 position_t const *const src_pos = &expr->base.pos;
3023 char const *const name = current_function_entity->base.symbol->string;
3024 string_t const string = { name, strlen(name), STRING_ENCODING_CHAR };
3025 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
3027 return current_function_name;
3028 case FUNCNAME_FUNCSIG:
3029 if (current_funcsig == NULL) {
3030 position_t const *const src_pos = &expr->base.pos;
3031 ir_entity *const ent = get_irg_entity(current_ir_graph);
3032 char const *const name = get_entity_ld_name(ent);
3033 string_t const string = { name, strlen(name), STRING_ENCODING_CHAR };
3034 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
3036 return current_funcsig;
3038 panic("Unsupported function name");
3041 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
3043 statement_t *statement = expr->statement;
3045 assert(statement->kind == STATEMENT_COMPOUND);
3046 return compound_statement_to_firm(&statement->compound);
3049 static ir_node *va_start_expression_to_firm(
3050 const va_start_expression_t *const expr)
3052 ir_entity *param_ent = current_vararg_entity;
3053 if (param_ent == NULL) {
3054 size_t const n = IR_VA_START_PARAMETER_NUMBER;
3055 ir_type *const frame_type = get_irg_frame_type(current_ir_graph);
3056 ir_type *const param_type = get_unknown_type();
3057 param_ent = new_parameter_entity(frame_type, n, param_type);
3058 current_vararg_entity = param_ent;
3061 ir_node *const frame = get_irg_frame(current_ir_graph);
3062 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
3063 ir_node *const no_mem = new_NoMem();
3064 ir_node *const arg_sel = new_d_simpleSel(dbgi, no_mem, frame, param_ent);
3066 set_value_for_expression_addr(expr->ap, arg_sel, NULL);
3071 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
3073 type_t *const type = expr->base.type;
3074 expression_t *const ap_expr = expr->ap;
3075 ir_node *const ap_addr = expression_to_addr(ap_expr);
3076 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
3077 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
3078 ir_node *const res = deref_address(dbgi, type, ap);
3080 ir_node *const cnst = get_type_size_node(expr->base.type);
3081 ir_mode *const mode = get_irn_mode(cnst);
3082 ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
3083 ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
3084 ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align);
3085 ir_node *const c4 = new_d_And(dbgi, c2, c3, mode);
3086 ir_node *const add = new_d_Add(dbgi, ap, c4, mode_P_data);
3088 set_value_for_expression_addr(ap_expr, add, ap_addr);
3094 * Generate Firm for a va_copy expression.
3096 static ir_node *va_copy_expression_to_firm(const va_copy_expression_t *const expr)
3098 ir_node *const src = expression_to_value(expr->src);
3099 set_value_for_expression_addr(expr->dst, src, NULL);
3103 static ir_node *dereference_addr(const unary_expression_t *const expression)
3105 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
3106 return expression_to_value(expression->value);
3110 * Returns a IR-node representing an lvalue of the given expression.
3112 static ir_node *expression_to_addr(const expression_t *expression)
3114 switch (expression->kind) {
3115 case EXPR_ARRAY_ACCESS:
3116 return array_access_addr(&expression->array_access);
3117 case EXPR_COMPOUND_LITERAL:
3118 return compound_literal_addr(&expression->compound_literal);
3119 case EXPR_REFERENCE:
3120 return reference_addr(&expression->reference);
3122 return select_addr(&expression->select);
3123 case EXPR_UNARY_DEREFERENCE:
3124 return dereference_addr(&expression->unary);
3128 panic("trying to get address of non-lvalue");
3131 static ir_node *builtin_constant_to_firm(
3132 const builtin_constant_expression_t *expression)
3134 ir_mode *const mode = get_ir_mode_storage(expression->base.type);
3135 bool const v = is_constant_expression(expression->value) != EXPR_CLASS_VARIABLE;
3136 return create_Const_from_bool(mode, v);
3139 static ir_node *builtin_types_compatible_to_firm(
3140 const builtin_types_compatible_expression_t *expression)
3142 type_t *const left = get_unqualified_type(skip_typeref(expression->left));
3143 type_t *const right = get_unqualified_type(skip_typeref(expression->right));
3144 bool const value = types_compatible(left, right);
3145 ir_mode *const mode = get_ir_mode_storage(expression->base.type);
3146 return create_Const_from_bool(mode, value);
3149 static void prepare_label_target(label_t *const label)
3151 if (label->address_taken && !label->indirect_block) {
3152 ir_node *const iblock = new_immBlock();
3153 label->indirect_block = iblock;
3154 ARR_APP1(ir_node*, ijmp_blocks, iblock);
3155 jump_from_block_to_target(&label->target, iblock);
3160 * Pointer to a label. This is used for the
3161 * GNU address-of-label extension.
3163 static ir_node *label_address_to_firm(const label_address_expression_t *label)
3165 /* Beware: Might be called from create initializer with current_ir_graph
3166 * set to const_code_irg. */
3167 PUSH_IRG(current_function);
3168 prepare_label_target(label->label);
3171 symconst_symbol value;
3172 value.entity_p = create_Block_entity(label->label->indirect_block);
3173 dbg_info *const dbgi = get_dbg_info(&label->base.pos);
3174 return new_d_SymConst(dbgi, mode_P_code, value, symconst_addr_ent);
3177 static ir_node *expression_to_value(expression_t const *const expr)
3180 if (!constant_folding) {
3181 assert(!expr->base.transformed);
3182 ((expression_t*)expr)->base.transformed = true;
3184 assert(!is_type_complex(skip_typeref(expr->base.type)));
3187 switch (expr->kind) {
3188 case EXPR_UNARY_CAST:
3189 if (!is_type_atomic(skip_typeref(expr->base.type), ATOMIC_TYPE_BOOL))
3190 return create_cast(&expr->unary);
3192 case EXPR_BINARY_EQUAL:
3193 case EXPR_BINARY_GREATER:
3194 case EXPR_BINARY_GREATEREQUAL:
3195 case EXPR_BINARY_ISGREATER:
3196 case EXPR_BINARY_ISGREATEREQUAL:
3197 case EXPR_BINARY_ISLESS:
3198 case EXPR_BINARY_ISLESSEQUAL:
3199 case EXPR_BINARY_ISLESSGREATER:
3200 case EXPR_BINARY_ISUNORDERED:
3201 case EXPR_BINARY_LESS:
3202 case EXPR_BINARY_LESSEQUAL:
3203 case EXPR_BINARY_LOGICAL_AND:
3204 case EXPR_BINARY_LOGICAL_OR:
3205 case EXPR_BINARY_NOTEQUAL:
3206 case EXPR_UNARY_NOT: {
3207 jump_target true_target;
3208 jump_target false_target;
3209 init_jump_target(&true_target, NULL);
3210 init_jump_target(&false_target, NULL);
3211 expression_to_control_flow(expr, &true_target, &false_target);
3212 return control_flow_to_1_0(expr, &true_target, &false_target);
3215 case EXPR_BINARY_ADD:
3216 case EXPR_BINARY_BITWISE_AND:
3217 case EXPR_BINARY_BITWISE_OR:
3218 case EXPR_BINARY_BITWISE_XOR:
3219 case EXPR_BINARY_DIV:
3220 case EXPR_BINARY_MOD:
3221 case EXPR_BINARY_MUL:
3222 case EXPR_BINARY_SHIFTLEFT:
3223 case EXPR_BINARY_SHIFTRIGHT:
3224 case EXPR_BINARY_SUB:
3225 return binop_to_firm(&expr->binary);
3227 case EXPR_BINARY_ADD_ASSIGN:
3228 case EXPR_BINARY_BITWISE_AND_ASSIGN:
3229 case EXPR_BINARY_BITWISE_OR_ASSIGN:
3230 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
3231 case EXPR_BINARY_DIV_ASSIGN:
3232 case EXPR_BINARY_MOD_ASSIGN:
3233 case EXPR_BINARY_MUL_ASSIGN:
3234 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
3235 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
3236 case EXPR_BINARY_SUB_ASSIGN:
3237 return binop_assign_to_firm(&expr->binary);
3242 case EXPR_UNARY_POSTFIX_DECREMENT: inc = false; pre = false; goto incdec;
3243 case EXPR_UNARY_POSTFIX_INCREMENT: inc = true; pre = false; goto incdec;
3244 case EXPR_UNARY_PREFIX_DECREMENT: inc = false; pre = true; goto incdec;
3245 case EXPR_UNARY_PREFIX_INCREMENT: inc = true; pre = true; goto incdec;
3247 return incdec_to_firm(&expr->unary, inc, pre);
3250 case EXPR_UNARY_IMAG: {
3251 complex_value irvalue = expression_to_complex(expr->unary.value);
3252 return irvalue.imag;
3254 case EXPR_UNARY_REAL: {
3255 complex_value irvalue = expression_to_complex(expr->unary.value);
3256 return irvalue.real;
3259 case EXPR_ALIGNOF: return alignof_to_firm( &expr->typeprop);
3260 case EXPR_ARRAY_ACCESS: return array_access_to_firm( &expr->array_access);
3261 case EXPR_BINARY_ASSIGN: return assign_expression_to_firm( &expr->binary);
3262 case EXPR_BINARY_COMMA: return comma_expression_to_firm( &expr->binary);
3263 case EXPR_BUILTIN_CONSTANT_P: return builtin_constant_to_firm( &expr->builtin_constant);
3264 case EXPR_BUILTIN_TYPES_COMPATIBLE_P: return builtin_types_compatible_to_firm(&expr->builtin_types_compatible);
3265 case EXPR_CALL: return call_expression_to_firm( &expr->call);
3266 case EXPR_CLASSIFY_TYPE: return classify_type_to_firm( &expr->classify_type);
3267 case EXPR_COMPOUND_LITERAL: return compound_literal_to_firm( &expr->compound_literal);
3268 case EXPR_CONDITIONAL: return conditional_to_firm( &expr->conditional);
3269 case EXPR_ENUM_CONSTANT: return enum_constant_to_firm( &expr->reference);
3270 case EXPR_FUNCNAME: return function_name_to_firm( &expr->funcname);
3271 case EXPR_LABEL_ADDRESS: return label_address_to_firm( &expr->label_address);
3272 case EXPR_LITERAL_CASES: return literal_to_firm( &expr->literal);
3273 case EXPR_LITERAL_CHARACTER: return char_literal_to_firm( &expr->string_literal);
3274 case EXPR_OFFSETOF: return offsetof_to_firm( &expr->offsetofe);
3275 case EXPR_REFERENCE: return reference_expression_to_firm( &expr->reference);
3276 case EXPR_SELECT: return select_to_firm( &expr->select);
3277 case EXPR_SIZEOF: return sizeof_to_firm( &expr->typeprop);
3278 case EXPR_STATEMENT: return statement_expression_to_firm( &expr->statement);
3279 case EXPR_STRING_LITERAL: return string_to_firm( &expr->base.pos, "str.%u", &expr->string_literal.value);
3280 case EXPR_UNARY_ASSUME: return handle_assume( expr->unary.value);
3281 case EXPR_UNARY_COMPLEMENT: return complement_to_firm( &expr->unary);
3282 case EXPR_UNARY_DEREFERENCE: return dereference_to_firm( &expr->unary);
3283 case EXPR_UNARY_NEGATE: return negate_to_firm( &expr->unary);
3284 case EXPR_UNARY_PLUS: return expression_to_value( expr->unary.value);
3285 case EXPR_UNARY_TAKE_ADDRESS: return expression_to_addr( expr->unary.value);
3286 case EXPR_VA_ARG: return va_arg_expression_to_firm( &expr->va_arge);
3287 case EXPR_VA_COPY: return va_copy_expression_to_firm( &expr->va_copye);
3288 case EXPR_VA_START: return va_start_expression_to_firm( &expr->va_starte);
3290 case EXPR_UNARY_DELETE:
3291 case EXPR_UNARY_DELETE_ARRAY:
3292 case EXPR_UNARY_THROW:
3293 panic("expression not implemented");
3298 panic("invalid expression");
3301 static void complex_equality_evaluation(const binary_expression_t *binexpr,
3302 jump_target *const true_target, jump_target *const false_target,
3303 ir_relation relation);
3305 static complex_value complex_to_control_flow(const expression_t *expression,
3306 jump_target *true_target,
3307 jump_target *false_target);
3310 * create a short-circuit expression evaluation that tries to construct
3311 * efficient control flow structures for &&, || and ! expressions
3313 static ir_node *expression_to_control_flow(expression_t const *const expr, jump_target *const true_target, jump_target *const false_target)
3315 switch (expr->kind) {
3316 case EXPR_UNARY_NOT:
3317 expression_to_control_flow(expr->unary.value, false_target, true_target);
3320 case EXPR_BINARY_LOGICAL_AND: {
3321 jump_target extra_target;
3322 init_jump_target(&extra_target, NULL);
3323 expression_to_control_flow(expr->binary.left, &extra_target, false_target);
3324 if (enter_jump_target(&extra_target))
3325 expression_to_control_flow(expr->binary.right, true_target, false_target);
3329 case EXPR_BINARY_LOGICAL_OR: {
3330 jump_target extra_target;
3331 init_jump_target(&extra_target, NULL);
3332 expression_to_control_flow(expr->binary.left, true_target, &extra_target);
3333 if (enter_jump_target(&extra_target))
3334 expression_to_control_flow(expr->binary.right, true_target, false_target);
3338 case EXPR_BINARY_COMMA:
3339 evaluate_expression_discard_result(expr->binary.left);
3340 return expression_to_control_flow(expr->binary.right, true_target, false_target);
3342 case EXPR_BINARY_EQUAL:
3343 case EXPR_BINARY_GREATER:
3344 case EXPR_BINARY_GREATEREQUAL:
3345 case EXPR_BINARY_ISGREATER:
3346 case EXPR_BINARY_ISGREATEREQUAL:
3347 case EXPR_BINARY_ISLESS:
3348 case EXPR_BINARY_ISLESSEQUAL:
3349 case EXPR_BINARY_ISLESSGREATER:
3350 case EXPR_BINARY_ISUNORDERED:
3351 case EXPR_BINARY_LESS:
3352 case EXPR_BINARY_LESSEQUAL:
3353 case EXPR_BINARY_NOTEQUAL: {
3354 type_t *const type = skip_typeref(expr->binary.left->base.type);
3355 ir_relation const relation = get_relation(expr->kind);
3356 if (is_type_complex(type)) {
3357 complex_equality_evaluation(&expr->binary, true_target,
3358 false_target, relation);
3362 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
3363 ir_mode *const mode = get_ir_mode_arithmetic(type);
3364 ir_node *const left = create_conv(dbgi, expression_to_value(expr->binary.left), mode);
3365 ir_node *const right = create_conv(dbgi, expression_to_value(expr->binary.right), mode);
3366 compare_to_control_flow(expr, left, right, relation, true_target, false_target);
3370 case EXPR_UNARY_CAST:
3371 if (is_type_atomic(skip_typeref(expr->base.type), ATOMIC_TYPE_BOOL)) {
3372 expression_to_control_flow(expr->unary.value, true_target, false_target);
3377 type_t *const type = skip_typeref(expr->base.type);
3378 if (is_type_complex(type)) {
3379 complex_to_control_flow(expr, true_target, false_target);
3383 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
3384 ir_mode *const mode = get_ir_mode_arithmetic(type);
3385 ir_node *const val = create_conv(dbgi, expression_to_value(expr), mode);
3386 ir_node *const left = val;
3387 ir_node *const right = new_Const(get_mode_null(get_irn_mode(val)));
3388 ir_relation const relation = ir_relation_unordered_less_greater;
3389 compare_to_control_flow(expr, left, right, relation, true_target, false_target);
3395 static complex_value complex_conv(dbg_info *dbgi, complex_value value,
3398 return (complex_value) {
3399 create_conv(dbgi, value.real, mode),
3400 create_conv(dbgi, value.imag, mode)
3404 static complex_value complex_conv_to_storage(dbg_info *const dbgi,
3405 complex_value const value, type_t *const type)
3407 ir_mode *const mode = get_complex_mode_storage(type);
3408 return complex_conv(dbgi, value, mode);
3411 static void store_complex(dbg_info *dbgi, ir_node *addr, type_t *type,
3412 complex_value value)
3414 value = complex_conv_to_storage(dbgi, value, type);
3415 ir_graph *const irg = current_ir_graph;
3416 ir_type *const irtype = get_ir_type(type);
3417 ir_node *const mem = get_store();
3418 ir_node *const nomem = get_irg_no_mem(irg);
3419 ir_mode *const mode = get_complex_mode_storage(type);
3420 ir_node *const real = create_conv(dbgi, value.real, mode);
3421 ir_node *const imag = create_conv(dbgi, value.imag, mode);
3422 ir_node *const storer = new_d_Store(dbgi, mem, addr, real, cons_floats);
3423 ir_node *const memr = new_Proj(storer, mode_M, pn_Store_M);
3424 ir_mode *const muint = atomic_modes[ATOMIC_TYPE_UINT];
3425 ir_node *const one = new_Const(get_mode_one(muint));
3426 ir_node *const in[1] = { one };
3427 ir_entity *const arrent = get_array_element_entity(irtype);
3428 ir_node *const addri = new_d_Sel(dbgi, nomem, addr, 1, in, arrent);
3429 ir_node *const storei = new_d_Store(dbgi, memr, addri, imag, cons_floats);
3430 ir_node *const memi = new_Proj(storei, mode_M, pn_Store_M);
3434 static ir_node *complex_to_memory(dbg_info *dbgi, type_t *type,
3435 complex_value value)
3437 ir_graph *const irg = current_ir_graph;
3438 ir_type *const frame_type = get_irg_frame_type(irg);
3439 ident *const id = id_unique("cmplex_tmp.%u");
3440 ir_type *const irtype = get_ir_type(type);
3441 ir_entity *const tmp_storage = new_entity(frame_type, id, irtype);
3442 ir_node *const frame = get_irg_frame(irg);
3443 ir_node *const nomem = get_irg_no_mem(irg);
3444 ir_node *const addr = new_simpleSel(nomem, frame, tmp_storage);
3445 set_entity_compiler_generated(tmp_storage, 1);
3446 store_complex(dbgi, addr, type, value);
3450 static complex_value read_localvar_complex(dbg_info *dbgi, entity_t *const entity)
3452 assert(entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE
3453 || entity->declaration.kind == DECLARATION_KIND_PARAMETER);
3454 type_t *const type = skip_typeref(entity->declaration.type);
3455 ir_mode *const mode = get_complex_mode_storage(type);
3456 ir_node *const real = get_value(entity->variable.v.value_number, mode);
3457 ir_node *const imag = get_value(entity->variable.v.value_number+1, mode);
3458 ir_mode *const mode_arithmetic = get_complex_mode_arithmetic(type);
3459 return (complex_value) {
3460 create_conv(dbgi, real, mode_arithmetic),
3461 create_conv(dbgi, imag, mode_arithmetic)
3465 static complex_value complex_deref_address(dbg_info *const dbgi,
3466 type_t *type, ir_node *const addr,
3467 ir_cons_flags flags)
3469 type = skip_typeref(type);
3470 assert(is_type_complex(type));
3472 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
3473 flags |= cons_volatile;
3474 ir_mode *const mode = get_complex_mode_storage(type);
3475 ir_node *const memory = get_store();
3476 ir_node *const load = new_d_Load(dbgi, memory, addr, mode, flags);
3477 ir_node *const load_mem = new_Proj(load, mode_M, pn_Load_M);
3478 ir_node *const load_res = new_Proj(load, mode, pn_Load_res);
3480 ir_type *const irtype = get_ir_type(type);
3481 ir_mode *const mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
3482 ir_node *const in[1] = { new_Const(get_mode_one(mode_uint)) };
3483 ir_entity *const entity = get_array_element_entity(irtype);
3484 ir_node *const nomem = get_irg_no_mem(current_ir_graph);
3485 ir_node *const addr2 = new_Sel(nomem, addr, 1, in, entity);
3486 ir_node *const load2 = new_d_Load(dbgi, load_mem, addr2, mode, flags);
3487 ir_node *const load_mem2 = new_Proj(load2, mode_M, pn_Load_M);
3488 ir_node *const load_res2 = new_Proj(load2, mode, pn_Load_res);
3489 set_store(load_mem2);
3491 return (complex_value) { load_res, load_res2 };
3494 static complex_value complex_reference_to_firm(const reference_expression_t *ref)
3496 dbg_info *const dbgi = get_dbg_info(&ref->base.pos);
3497 entity_t *const entity = ref->entity;
3498 assert(is_declaration(entity));
3500 switch ((declaration_kind_t)entity->declaration.kind) {
3501 case DECLARATION_KIND_LOCAL_VARIABLE:
3502 case DECLARATION_KIND_PARAMETER:
3503 return read_localvar_complex(dbgi, entity);
3505 ir_node *const addr = reference_addr(ref);
3506 return complex_deref_address(dbgi, entity->declaration.type, addr, cons_none);
3511 static complex_value complex_select_to_firm(const select_expression_t *select)
3513 dbg_info *const dbgi = get_dbg_info(&select->base.pos);
3514 ir_node *const addr = select_addr(select);
3515 type_t *const type = skip_typeref(select->base.type);
3516 return complex_deref_address(dbgi, type, addr, cons_none);
3519 static complex_value complex_array_access_to_firm(
3520 const array_access_expression_t *expression)
3522 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
3523 ir_node *addr = array_access_addr(expression);
3524 type_t *type = skip_typeref(expression->base.type);
3525 assert(is_type_complex(type));
3526 return complex_deref_address(dbgi, type, addr, cons_none);
3529 static complex_value get_complex_from_lvalue(const expression_t *expression,
3532 dbg_info *dbgi = get_dbg_info(&expression->base.pos);
3534 if (expression->kind == EXPR_REFERENCE) {
3535 const reference_expression_t *ref = &expression->reference;
3537 entity_t *entity = ref->entity;
3538 assert(entity->kind == ENTITY_VARIABLE
3539 || entity->kind == ENTITY_PARAMETER);
3540 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
3541 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE ||
3542 entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
3543 return read_localvar_complex(dbgi, entity);
3547 assert(addr != NULL);
3548 return complex_deref_address(dbgi, expression->base.type, addr, cons_none);
3551 static complex_value complex_cast_to_firm(const unary_expression_t *expression)
3553 const expression_t *const value = expression->value;
3554 dbg_info *const dbgi = get_dbg_info(&expression->base.pos);
3555 type_t *const from_type = skip_typeref(value->base.type);
3556 type_t *const to_type = skip_typeref(expression->base.type);
3557 ir_mode *const mode = get_complex_mode_storage(to_type);
3559 if (is_type_complex(from_type)) {
3560 complex_value cvalue = expression_to_complex(value);
3561 return complex_conv(dbgi, cvalue, mode);
3563 ir_node *const value_node = expression_to_value(value);
3564 ir_node *const zero = new_Const(get_mode_null(mode));
3565 ir_node *const casted = create_conv(dbgi, value_node, mode);
3566 return (complex_value) { casted, zero };
3570 static complex_value complex_literal_to_firm(const literal_expression_t *literal)
3572 type_t *type = skip_typeref(literal->base.type);
3573 ir_mode *mode = get_complex_mode_storage(type);
3574 ir_node *litvalue = literal_to_firm_(literal, mode);
3575 ir_node *zero = new_Const(get_mode_null(mode));
3576 return (complex_value) { zero, litvalue };
3579 typedef complex_value (*new_complex_binop)(dbg_info *dbgi, complex_value left,
3580 complex_value right, ir_mode *mode);
3582 static complex_value new_complex_add(dbg_info *dbgi, complex_value left,
3583 complex_value right, ir_mode *mode)
3585 return (complex_value) {
3586 new_d_Add(dbgi, left.real, right.real, mode),
3587 new_d_Add(dbgi, left.imag, right.imag, mode)
3591 static complex_value new_complex_sub(dbg_info *dbgi, complex_value left,
3592 complex_value right, ir_mode *mode)
3594 return (complex_value) {
3595 new_d_Sub(dbgi, left.real, right.real, mode),
3596 new_d_Sub(dbgi, left.imag, right.imag, mode)
3600 static complex_value new_complex_mul(dbg_info *dbgi, complex_value left,
3601 complex_value right, ir_mode *mode)
3603 ir_node *const op1 = new_d_Mul(dbgi, left.real, right.real, mode);
3604 ir_node *const op2 = new_d_Mul(dbgi, left.imag, right.imag, mode);
3605 ir_node *const op3 = new_d_Mul(dbgi, left.real, right.imag, mode);
3606 ir_node *const op4 = new_d_Mul(dbgi, left.imag, right.real, mode);
3607 return (complex_value) {
3608 new_d_Sub(dbgi, op1, op2, mode),
3609 new_d_Add(dbgi, op3, op4, mode)
3613 static complex_value new_complex_div(dbg_info *dbgi, complex_value left,
3614 complex_value right, ir_mode *mode)
3616 ir_node *const op1 = new_d_Mul(dbgi, left.real, right.real, mode);
3617 ir_node *const op2 = new_d_Mul(dbgi, left.imag, right.imag, mode);
3618 ir_node *const op3 = new_d_Mul(dbgi, left.imag, right.real, mode);
3619 ir_node *const op4 = new_d_Mul(dbgi, left.real, right.imag, mode);
3620 ir_node *const op5 = new_d_Mul(dbgi, right.real, right.real, mode);
3621 ir_node *const op6 = new_d_Mul(dbgi, right.imag, right.imag, mode);
3622 ir_node *const real_dividend = new_d_Add(dbgi, op1, op2, mode);
3623 ir_node *const real_divisor = new_d_Add(dbgi, op5, op6, mode);
3624 ir_node *const imag_dividend = new_d_Sub(dbgi, op3, op4, mode);
3625 ir_node *const imag_divisor = new_d_Add(dbgi, op5, op6, mode);
3626 return (complex_value) {
3627 create_div(dbgi, real_dividend, real_divisor, mode),
3628 create_div(dbgi, imag_dividend, imag_divisor, mode)
3632 typedef complex_value (*new_complex_unop)(dbg_info *dbgi, complex_value value,
3635 static complex_value new_complex_increment(dbg_info *dbgi, complex_value value,
3638 ir_node *one = new_Const(get_mode_one(mode));
3639 return (complex_value) {
3640 new_d_Add(dbgi, value.real, one, mode),
3645 static complex_value new_complex_decrement(dbg_info *dbgi, complex_value value,
3648 ir_node *one = new_Const(get_mode_one(mode));
3649 return (complex_value) {
3650 new_d_Sub(dbgi, value.real, one, mode),
3655 static void set_complex_value_for_expression(dbg_info *dbgi,
3656 const expression_t *expression,
3657 complex_value value,
3660 type_t *const type = skip_typeref(expression->base.type);
3661 ir_mode *const mode = get_complex_mode_storage(type);
3662 ir_node *const real = create_conv(dbgi, value.real, mode);
3663 ir_node *const imag = create_conv(dbgi, value.imag, mode);
3665 if (expression->kind == EXPR_REFERENCE) {
3666 const reference_expression_t *ref = &expression->reference;
3668 entity_t *entity = ref->entity;
3669 assert(is_declaration(entity));
3670 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
3671 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE ||
3672 entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
3673 set_value(entity->variable.v.value_number, real);
3674 set_value(entity->variable.v.value_number+1, imag);
3680 addr = expression_to_addr(expression);
3681 assert(addr != NULL);
3682 store_complex(dbgi, addr, type, value);
3685 static complex_value create_complex_assign_unop(const unary_expression_t *unop,
3686 new_complex_unop constructor,
3689 dbg_info *const dbgi = get_dbg_info(&unop->base.pos);
3690 const expression_t *value_expr = unop->value;
3691 ir_node *addr = expression_to_addr(value_expr);
3692 complex_value value = get_complex_from_lvalue(value_expr, addr);
3693 type_t *type = skip_typeref(unop->base.type);
3694 ir_mode *mode = get_complex_mode_arithmetic(type);
3695 value = complex_conv(dbgi, value, mode);
3696 complex_value new_value = constructor(dbgi, value, mode);
3697 set_complex_value_for_expression(dbgi, value_expr, new_value, addr);
3698 return return_old ? value : new_value;
3701 static complex_value complex_negate_to_firm(const unary_expression_t *expr)
3703 complex_value cvalue = expression_to_complex(expr->value);
3704 dbg_info *dbgi = get_dbg_info(&expr->base.pos);
3705 ir_mode *mode = get_complex_mode_arithmetic(expr->base.type);
3706 cvalue = complex_conv(dbgi, cvalue, mode);
3707 return (complex_value) {
3708 new_d_Minus(dbgi, cvalue.real, mode),
3709 new_d_Minus(dbgi, cvalue.imag, mode)
3713 static complex_value complex_complement_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) {
3721 new_d_Minus(dbgi, cvalue.imag, mode)
3725 static complex_value create_complex_binop(const binary_expression_t *binexpr,
3726 new_complex_binop constructor)
3728 dbg_info *dbgi = get_dbg_info(&binexpr->base.pos);
3729 ir_mode *mode = get_complex_mode_arithmetic(binexpr->base.type);
3730 complex_value left = expression_to_complex(binexpr->left);
3731 complex_value right = expression_to_complex(binexpr->right);
3732 left = complex_conv(dbgi, left, mode);
3733 right = complex_conv(dbgi, right, mode);
3734 return constructor(dbgi, left, right, mode);
3737 static complex_value create_complex_assign_binop(const binary_expression_t *binexpr,
3738 new_complex_binop constructor)
3740 dbg_info *dbgi = get_dbg_info(&binexpr->base.pos);
3741 expression_t *lefte = binexpr->left;
3742 expression_t *righte = binexpr->right;
3743 ir_mode *mode = get_complex_mode_arithmetic(righte->base.type);
3744 ir_node *addr = expression_to_addr(lefte);
3745 complex_value left = get_complex_from_lvalue(lefte, addr);
3746 complex_value right = expression_to_complex(righte);
3747 left = complex_conv(dbgi, left, mode);
3748 right = complex_conv(dbgi, right, mode);
3749 complex_value new_value = constructor(dbgi, left, right, mode);
3750 type_t *res_type = skip_typeref(binexpr->base.type);
3751 set_complex_value_for_expression(dbgi, lefte, new_value, addr);
3752 return complex_conv_to_storage(dbgi, new_value, res_type);
3755 static complex_value complex_call_to_firm(const call_expression_t *call)
3757 ir_node *result = call_expression_to_firm(call);
3758 expression_t *function = call->function;
3759 type_t *type = skip_typeref(function->base.type);
3760 assert(is_type_pointer(type));
3761 pointer_type_t *pointer_type = &type->pointer;
3762 type_t *points_to = skip_typeref(pointer_type->points_to);
3763 assert(is_type_function(points_to));
3764 function_type_t *function_type = &points_to->function;
3765 type_t *return_type = skip_typeref(function_type->return_type);
3766 assert(is_type_complex(return_type));
3767 dbg_info *dbgi = get_dbg_info(&call->base.pos);
3768 return complex_deref_address(dbgi, return_type, result, cons_floats);
3771 static void complex_equality_evaluation(const binary_expression_t *binexpr,
3772 jump_target *const true_target, jump_target *const false_target,
3773 ir_relation relation)
3775 jump_target extra_target;
3776 init_jump_target(&extra_target, NULL);
3778 complex_value left = expression_to_complex(binexpr->left);
3779 complex_value right = expression_to_complex(binexpr->right);
3780 dbg_info *dbgi = get_dbg_info(&binexpr->base.pos);
3781 ir_mode *mode = get_complex_mode_arithmetic(binexpr->left->base.type);
3782 left = complex_conv(dbgi, left, mode);
3783 right = complex_conv(dbgi, right, mode);
3785 ir_node *cmp_real = new_d_Cmp(dbgi, left.real, right.real, relation);
3786 ir_node *cond = new_d_Cond(dbgi, cmp_real);
3787 ir_node *true_proj = new_Proj(cond, mode_X, pn_Cond_true);
3788 ir_node *false_proj = new_Proj(cond, mode_X, pn_Cond_false);
3789 add_pred_to_jump_target(&extra_target, true_proj);
3790 add_pred_to_jump_target(false_target, false_proj);
3791 if (!enter_jump_target(&extra_target))
3794 ir_node *cmp_imag = new_d_Cmp(dbgi, left.imag, right.imag, relation);
3795 ir_node *condi = new_d_Cond(dbgi, cmp_imag);
3796 ir_node *true_proj_i = new_Proj(condi, mode_X, pn_Cond_true);
3797 ir_node *false_proj_i = new_Proj(condi, mode_X, pn_Cond_false);
3798 add_pred_to_jump_target(true_target, true_proj_i);
3799 add_pred_to_jump_target(false_target, false_proj_i);
3800 set_unreachable_now();
3803 static complex_value complex_to_control_flow(
3804 const expression_t *const expression, jump_target *const true_target,
3805 jump_target *const false_target)
3807 jump_target extra_target;
3808 init_jump_target(&extra_target, NULL);
3809 complex_value value = expression_to_complex(expression);
3810 if (is_Const(value.real) && is_Const(value.imag)) {
3811 ir_tarval *tv_real = get_Const_tarval(value.real);
3812 ir_tarval *tv_imag = get_Const_tarval(value.imag);
3813 if (tarval_is_null(tv_real) && tarval_is_null(tv_imag)) {
3814 jump_to_target(false_target);
3816 jump_to_target(true_target);
3818 set_unreachable_now();
3822 dbg_info *const dbgi = get_dbg_info(&expression->base.pos);
3823 type_t *const type = expression->base.type;
3824 ir_mode *const mode = get_complex_mode_arithmetic(type);
3825 value = complex_conv(dbgi, value, mode);
3826 ir_node *const zero = new_Const(get_mode_null(mode));
3827 ir_node *const cmp_real =
3828 new_d_Cmp(dbgi, value.real, zero, ir_relation_unordered_less_greater);
3829 ir_node *const cond_real = new_d_Cond(dbgi, cmp_real);
3830 ir_node *const true_real = new_Proj(cond_real, mode_X, pn_Cond_true);
3831 ir_node *const false_real = new_Proj(cond_real, mode_X, pn_Cond_false);
3832 add_pred_to_jump_target(true_target, true_real);
3833 add_pred_to_jump_target(&extra_target, false_real);
3834 if (!enter_jump_target(&extra_target))
3837 ir_node *const cmp_imag =
3838 new_d_Cmp(dbgi, value.imag, zero, ir_relation_unordered_less_greater);
3839 ir_node *const cond_imag = new_d_Cond(dbgi, cmp_imag);
3840 ir_node *const true_imag = new_Proj(cond_imag, mode_X, pn_Cond_true);
3841 ir_node *const false_imag = new_Proj(cond_imag, mode_X, pn_Cond_false);
3842 add_pred_to_jump_target(true_target, true_imag);
3843 add_pred_to_jump_target(false_target, false_imag);
3844 set_unreachable_now();
3849 static complex_value complex_conditional_to_firm(
3850 const conditional_expression_t *const expression)
3852 jump_target true_target;
3853 jump_target false_target;
3854 init_jump_target(&true_target, NULL);
3855 init_jump_target(&false_target, NULL);
3856 complex_value cond_val;
3857 memset(&cond_val, 0, sizeof(cond_val));
3858 if (expression->true_expression == NULL) {
3859 assert(is_type_complex(skip_typeref(expression->condition->base.type)));
3860 cond_val = complex_to_control_flow(expression->condition,
3861 &true_target, &false_target);
3863 expression_to_control_flow(expression->condition, &true_target, &false_target);
3867 memset(&val, 0, sizeof(val));
3868 jump_target exit_target;
3869 init_jump_target(&exit_target, NULL);
3870 type_t *const type = skip_typeref(expression->base.type);
3871 ir_mode *const mode = get_complex_mode_arithmetic(type);
3872 dbg_info *const dbgi = get_dbg_info(&expression->base.pos);
3874 if (enter_jump_target(&true_target)) {
3875 if (expression->true_expression) {
3876 val = expression_to_complex(expression->true_expression);
3878 assert(cond_val.real != NULL);
3881 val = complex_conv(dbgi, val, mode);
3882 jump_to_target(&exit_target);
3885 if (enter_jump_target(&false_target)) {
3886 complex_value false_val
3887 = expression_to_complex(expression->false_expression);
3888 false_val = complex_conv(dbgi, false_val, mode);
3889 jump_to_target(&exit_target);
3890 if (val.real != NULL) {
3891 ir_node *const inr[] = { val.real, false_val.real };
3892 ir_node *const ini[] = { val.imag, false_val.imag };
3893 ir_node *const block = exit_target.block;
3894 val.real = new_rd_Phi(dbgi, block, lengthof(inr), inr, mode);
3895 val.imag = new_rd_Phi(dbgi, block, lengthof(ini), ini, mode);
3901 if (!enter_jump_target(&exit_target)) {
3902 set_cur_block(new_Block(0, NULL));
3903 assert(!is_type_void(type));
3904 val.real = val.imag = new_Bad(mode);
3909 static void create_local_declarations(entity_t*);
3911 static complex_value compound_statement_to_firm_complex(
3912 const compound_statement_t *compound)
3914 create_local_declarations(compound->scope.entities);
3916 complex_value result = { NULL, NULL };
3917 statement_t *statement = compound->statements;
3919 for ( ; statement != NULL; statement = next) {
3920 next = statement->base.next;
3921 /* last statement is the return value */
3923 /* it must be an expression, otherwise we wouldn't be in the
3924 * complex variant of compound_statement_to_firm */
3925 if (statement->kind != STATEMENT_EXPRESSION)
3926 panic("last member of complex statement expression not an expression statement");
3927 expression_t *expression = statement->expression.expression;
3928 assert(is_type_complex(skip_typeref(expression->base.type)));
3929 result = expression_to_complex(expression);
3931 statement_to_firm(statement);
3938 static complex_value complex_assign_to_firm(const binary_expression_t *expr)
3940 dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
3941 complex_value const value = expression_to_complex(expr->right);
3942 ir_node *const addr = expression_to_addr(expr->left);
3943 set_complex_value_for_expression(dbgi, expr->left, value, addr);
3947 static complex_value complex_statement_expression_to_firm(
3948 const statement_expression_t *const expr)
3950 const statement_t *const statement = expr->statement;
3951 assert(statement->kind == STATEMENT_COMPOUND);
3953 return compound_statement_to_firm_complex(&statement->compound);
3956 static complex_value expression_to_complex(const expression_t *expression)
3958 switch (expression->kind) {
3959 case EXPR_REFERENCE:
3960 return complex_reference_to_firm(&expression->reference);
3962 return complex_select_to_firm(&expression->select);
3963 case EXPR_ARRAY_ACCESS:
3964 return complex_array_access_to_firm(&expression->array_access);
3965 case EXPR_UNARY_CAST:
3966 return complex_cast_to_firm(&expression->unary);
3967 case EXPR_BINARY_COMMA:
3968 evaluate_expression_discard_result(expression->binary.left);
3969 return expression_to_complex(expression->binary.right);
3970 case EXPR_BINARY_ADD:
3971 return create_complex_binop(&expression->binary, new_complex_add);
3972 case EXPR_BINARY_ADD_ASSIGN:
3973 return create_complex_assign_binop(&expression->binary, new_complex_add);
3974 case EXPR_BINARY_SUB:
3975 return create_complex_binop(&expression->binary, new_complex_sub);
3976 case EXPR_BINARY_SUB_ASSIGN:
3977 return create_complex_assign_binop(&expression->binary, new_complex_sub);
3978 case EXPR_BINARY_MUL:
3979 return create_complex_binop(&expression->binary, new_complex_mul);
3980 case EXPR_BINARY_MUL_ASSIGN:
3981 return create_complex_assign_binop(&expression->binary, new_complex_mul);
3982 case EXPR_BINARY_DIV:
3983 return create_complex_binop(&expression->binary, new_complex_div);
3984 case EXPR_BINARY_DIV_ASSIGN:
3985 return create_complex_assign_binop(&expression->binary, new_complex_div);
3986 case EXPR_UNARY_PLUS:
3987 return expression_to_complex(expression->unary.value);
3988 case EXPR_UNARY_PREFIX_INCREMENT:
3989 return create_complex_assign_unop(&expression->unary,
3990 new_complex_increment, false);
3991 case EXPR_UNARY_PREFIX_DECREMENT:
3992 return create_complex_assign_unop(&expression->unary,
3993 new_complex_decrement, false);
3994 case EXPR_UNARY_POSTFIX_INCREMENT:
3995 return create_complex_assign_unop(&expression->unary,
3996 new_complex_increment, true);
3997 case EXPR_UNARY_POSTFIX_DECREMENT:
3998 return create_complex_assign_unop(&expression->unary,
3999 new_complex_decrement, true);
4000 case EXPR_UNARY_NEGATE:
4001 return complex_negate_to_firm(&expression->unary);
4002 case EXPR_UNARY_COMPLEMENT:
4003 return complex_complement_to_firm(&expression->unary);
4004 case EXPR_BINARY_ASSIGN:
4005 return complex_assign_to_firm(&expression->binary);
4006 case EXPR_LITERAL_CASES:
4007 return complex_literal_to_firm(&expression->literal);
4009 return complex_call_to_firm(&expression->call);
4010 case EXPR_CONDITIONAL:
4011 return complex_conditional_to_firm(&expression->conditional);
4012 case EXPR_STATEMENT:
4013 return complex_statement_expression_to_firm(&expression->statement);
4015 panic("unexpected complex expression");
4021 static void create_variable_entity(entity_t *variable,
4022 declaration_kind_t declaration_kind,
4023 ir_type *parent_type)
4025 assert(variable->kind == ENTITY_VARIABLE);
4026 type_t *type = skip_typeref(variable->declaration.type);
4028 ident *const id = new_id_from_str(variable->base.symbol->string);
4029 ir_type *const irtype = get_ir_type(type);
4030 dbg_info *const dbgi = get_dbg_info(&variable->base.pos);
4031 ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi);
4032 unsigned alignment = variable->declaration.alignment;
4034 set_entity_alignment(irentity, alignment);
4036 handle_decl_modifiers(irentity, variable);
4038 variable->declaration.kind = (unsigned char) declaration_kind;
4039 variable->variable.v.entity = irentity;
4040 set_entity_ld_ident(irentity, create_ld_ident(variable));
4042 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4043 set_entity_volatility(irentity, volatility_is_volatile);
4048 typedef struct type_path_entry_t type_path_entry_t;
4049 struct type_path_entry_t {
4051 ir_initializer_t *initializer;
4053 entity_t *compound_entry;
4056 typedef struct type_path_t type_path_t;
4057 struct type_path_t {
4058 type_path_entry_t *path;
4063 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
4065 size_t len = ARR_LEN(path->path);
4067 for (size_t i = 0; i < len; ++i) {
4068 const type_path_entry_t *entry = & path->path[i];
4070 type_t *type = skip_typeref(entry->type);
4071 if (is_type_compound(type)) {
4072 fprintf(stderr, ".%s", entry->compound_entry->base.symbol->string);
4073 } else if (is_type_array(type)) {
4074 fprintf(stderr, "[%u]", (unsigned) entry->index);
4076 fprintf(stderr, "-INVALID-");
4079 fprintf(stderr, " (");
4080 print_type(path->top_type);
4081 fprintf(stderr, ")");
4084 static type_path_entry_t *get_type_path_top(const type_path_t *path)
4086 size_t len = ARR_LEN(path->path);
4088 return & path->path[len-1];
4091 static type_path_entry_t *append_to_type_path(type_path_t *path)
4093 size_t len = ARR_LEN(path->path);
4094 ARR_RESIZE(type_path_entry_t, path->path, len+1);
4096 type_path_entry_t *result = & path->path[len];
4097 memset(result, 0, sizeof(result[0]));
4101 static size_t get_compound_member_count(const compound_type_t *type)
4103 compound_t *compound = type->compound;
4104 size_t n_members = 0;
4105 entity_t *member = compound->members.entities;
4106 for ( ; member != NULL; member = member->base.next) {
4113 static ir_initializer_t *get_initializer_entry(type_path_t *path)
4115 type_t *orig_top_type = path->top_type;
4116 type_t *top_type = skip_typeref(orig_top_type);
4118 assert(is_type_compound(top_type) || is_type_array(top_type));
4120 if (ARR_LEN(path->path) == 0) {
4123 type_path_entry_t *top = get_type_path_top(path);
4124 ir_initializer_t *initializer = top->initializer;
4125 return get_initializer_compound_value(initializer, top->index);
4129 static void descend_into_subtype(type_path_t *path)
4131 type_t *orig_top_type = path->top_type;
4132 type_t *top_type = skip_typeref(orig_top_type);
4134 assert(is_type_compound(top_type) || is_type_array(top_type));
4136 ir_initializer_t *initializer = get_initializer_entry(path);
4138 type_path_entry_t *top = append_to_type_path(path);
4139 top->type = top_type;
4143 if (is_type_compound(top_type)) {
4144 compound_t *const compound = top_type->compound.compound;
4145 entity_t *const entry = skip_unnamed_bitfields(compound->members.entities);
4147 top->compound_entry = entry;
4149 len = get_compound_member_count(&top_type->compound);
4150 if (entry != NULL) {
4151 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
4152 path->top_type = entry->declaration.type;
4155 assert(is_type_array(top_type));
4156 assert(top_type->array.size > 0);
4159 path->top_type = top_type->array.element_type;
4160 len = top_type->array.size;
4162 if (initializer == NULL
4163 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
4164 initializer = create_initializer_compound(len);
4165 /* we have to set the entry at the 2nd latest path entry... */
4166 size_t path_len = ARR_LEN(path->path);
4167 assert(path_len >= 1);
4169 type_path_entry_t *entry = & path->path[path_len-2];
4170 ir_initializer_t *tinitializer = entry->initializer;
4171 set_initializer_compound_value(tinitializer, entry->index,
4175 top->initializer = initializer;
4178 static void ascend_from_subtype(type_path_t *path)
4180 type_path_entry_t *top = get_type_path_top(path);
4182 path->top_type = top->type;
4184 size_t len = ARR_LEN(path->path);
4185 ARR_RESIZE(type_path_entry_t, path->path, len-1);
4188 static void walk_designator(type_path_t *path, const designator_t *designator)
4190 /* designators start at current object type */
4191 ARR_RESIZE(type_path_entry_t, path->path, 1);
4193 for ( ; designator != NULL; designator = designator->next) {
4194 type_path_entry_t *top = get_type_path_top(path);
4195 type_t *orig_type = top->type;
4196 type_t *type = skip_typeref(orig_type);
4198 if (designator->symbol != NULL) {
4199 assert(is_type_compound(type));
4201 symbol_t *symbol = designator->symbol;
4203 compound_t *compound = type->compound.compound;
4204 entity_t *iter = compound->members.entities;
4205 for (; iter->base.symbol != symbol; iter = iter->base.next, ++index) {}
4206 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
4208 /* revert previous initialisations of other union elements */
4209 if (type->kind == TYPE_COMPOUND_UNION) {
4210 ir_initializer_t *initializer = top->initializer;
4211 if (initializer != NULL
4212 && get_initializer_kind(initializer) == IR_INITIALIZER_COMPOUND) {
4213 /* are we writing to a new element? */
4214 ir_initializer_t *oldi
4215 = get_initializer_compound_value(initializer, index);
4216 if (get_initializer_kind(oldi) == IR_INITIALIZER_NULL) {
4217 /* clear initializer */
4219 = get_initializer_compound_n_entries(initializer);
4220 ir_initializer_t *nulli = get_initializer_null();
4221 for (size_t i = 0; i < len; ++i) {
4222 set_initializer_compound_value(initializer, i,
4229 top->type = orig_type;
4230 top->compound_entry = iter;
4232 orig_type = iter->declaration.type;
4234 expression_t *array_index = designator->array_index;
4235 assert(is_type_array(type));
4237 long index = fold_constant_to_int(array_index);
4238 assert(0 <= index && (!type->array.size_constant || (size_t)index < type->array.size));
4240 top->type = orig_type;
4241 top->index = (size_t) index;
4242 orig_type = type->array.element_type;
4244 path->top_type = orig_type;
4246 if (designator->next != NULL) {
4247 descend_into_subtype(path);
4251 path->invalid = false;
4254 static void advance_current_object(type_path_t *path)
4256 if (path->invalid) {
4257 /* TODO: handle this... */
4258 panic("invalid initializer (excessive elements)");
4261 type_path_entry_t *top = get_type_path_top(path);
4263 type_t *type = skip_typeref(top->type);
4264 if (is_type_union(type)) {
4265 /* only the first element is initialized in unions */
4266 top->compound_entry = NULL;
4267 } else if (is_type_struct(type)) {
4268 entity_t *entry = top->compound_entry;
4271 entry = skip_unnamed_bitfields(entry->base.next);
4272 top->compound_entry = entry;
4273 if (entry != NULL) {
4274 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
4275 path->top_type = entry->declaration.type;
4279 assert(is_type_array(type));
4282 if (!type->array.size_constant || top->index < type->array.size) {
4287 /* we're past the last member of the current sub-aggregate, try if we
4288 * can ascend in the type hierarchy and continue with another subobject */
4289 size_t len = ARR_LEN(path->path);
4292 ascend_from_subtype(path);
4293 advance_current_object(path);
4295 path->invalid = true;
4300 static ir_initializer_t *create_ir_initializer_value(
4301 const initializer_value_t *initializer)
4303 expression_t *expr = initializer->value;
4304 type_t *type = skip_typeref(expr->base.type);
4306 if (is_type_compound(type)) {
4307 if (expr->kind == EXPR_UNARY_CAST) {
4308 expr = expr->unary.value;
4309 type = skip_typeref(expr->base.type);
4311 /* must be a compound literal... */
4312 if (expr->kind == EXPR_COMPOUND_LITERAL) {
4313 return create_ir_initializer(expr->compound_literal.initializer,
4316 } else if (is_type_complex(type)) {
4317 complex_value const value = expression_to_complex(expr);
4318 ir_mode *const mode = get_complex_mode_storage(type);
4319 ir_node *const real = create_conv(NULL, value.real, mode);
4320 ir_node *const imag = create_conv(NULL, value.imag, mode);
4321 ir_initializer_t *const res = create_initializer_compound(2);
4322 ir_initializer_t *const init_real = create_initializer_const(real);
4323 ir_initializer_t *const init_imag = create_initializer_const(imag);
4324 set_initializer_compound_value(res, 0, init_real);
4325 set_initializer_compound_value(res, 1, init_imag);
4329 ir_node *value = expression_to_value(expr);
4330 value = conv_to_storage_type(NULL, value, type);
4331 return create_initializer_const(value);
4334 /** Tests whether type can be initialized by a string constant */
4335 static bool is_string_type(type_t *type)
4337 if (!is_type_array(type))
4340 type_t *const inner = skip_typeref(type->array.element_type);
4341 return is_type_integer(inner);
4344 static ir_initializer_t *create_ir_initializer_list(
4345 const initializer_list_t *initializer, type_t *type)
4348 memset(&path, 0, sizeof(path));
4349 path.top_type = type;
4350 path.path = NEW_ARR_F(type_path_entry_t, 0);
4352 descend_into_subtype(&path);
4354 for (size_t i = 0; i < initializer->len; ++i) {
4355 const initializer_t *sub_initializer = initializer->initializers[i];
4357 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
4358 walk_designator(&path, sub_initializer->designator.designator);
4362 if (sub_initializer->kind == INITIALIZER_VALUE) {
4363 const expression_t *expr = sub_initializer->value.value;
4364 const type_t *expr_type = skip_typeref(expr->base.type);
4365 /* we might have to descend into types until the types match */
4367 type_t *orig_top_type = path.top_type;
4368 type_t *top_type = skip_typeref(orig_top_type);
4370 if (types_compatible(top_type, expr_type))
4372 descend_into_subtype(&path);
4374 } else if (sub_initializer->kind == INITIALIZER_STRING) {
4375 /* we might have to descend into types until we're at a scalar
4378 type_t *orig_top_type = path.top_type;
4379 type_t *top_type = skip_typeref(orig_top_type);
4381 if (is_string_type(top_type))
4383 descend_into_subtype(&path);
4387 ir_initializer_t *sub_irinitializer
4388 = create_ir_initializer(sub_initializer, path.top_type);
4390 size_t path_len = ARR_LEN(path.path);
4391 assert(path_len >= 1);
4392 type_path_entry_t *entry = & path.path[path_len-1];
4393 ir_initializer_t *tinitializer = entry->initializer;
4394 set_initializer_compound_value(tinitializer, entry->index,
4397 advance_current_object(&path);
4400 assert(ARR_LEN(path.path) >= 1);
4401 ir_initializer_t *result = path.path[0].initializer;
4402 DEL_ARR_F(path.path);
4407 static ir_initializer_t *create_ir_initializer_string(initializer_t const *const init, type_t *type)
4409 type = skip_typeref(type);
4411 assert(type->kind == TYPE_ARRAY);
4412 assert(type->array.size_constant);
4413 string_literal_expression_t const *const str = get_init_string(init);
4414 size_t const str_len = str->value.size;
4415 size_t const arr_len = type->array.size;
4416 ir_initializer_t *const irinit = create_initializer_compound(arr_len);
4417 ir_mode *const mode = get_ir_mode_storage(type->array.element_type);
4418 char const * p = str->value.begin;
4419 switch (str->value.encoding) {
4420 case STRING_ENCODING_CHAR:
4421 case STRING_ENCODING_UTF8:
4422 for (size_t i = 0; i != arr_len; ++i) {
4423 char const c = i < str_len ? *p++ : 0;
4424 ir_tarval *const tv = new_tarval_from_long(c, mode);
4425 ir_initializer_t *const tvinit = create_initializer_tarval(tv);
4426 set_initializer_compound_value(irinit, i, tvinit);
4430 case STRING_ENCODING_CHAR16:
4431 case STRING_ENCODING_CHAR32:
4432 case STRING_ENCODING_WIDE:
4433 for (size_t i = 0; i != arr_len; ++i) {
4434 utf32 const c = i < str_len ? read_utf8_char(&p) : 0;
4435 ir_tarval *const tv = new_tarval_from_long(c, mode);
4436 ir_initializer_t *const tvinit = create_initializer_tarval(tv);
4437 set_initializer_compound_value(irinit, i, tvinit);
4445 static ir_initializer_t *create_ir_initializer(
4446 const initializer_t *initializer, type_t *type)
4448 switch (initializer->kind) {
4449 case INITIALIZER_STRING:
4450 return create_ir_initializer_string(initializer, type);
4452 case INITIALIZER_LIST:
4453 return create_ir_initializer_list(&initializer->list, type);
4455 case INITIALIZER_VALUE:
4456 return create_ir_initializer_value(&initializer->value);
4458 case INITIALIZER_DESIGNATOR:
4459 panic("unexpected designator initializer");
4461 panic("unknown initializer");
4464 /** ANSI C ยง6.7.8:21: If there are fewer initializers [..] than there
4465 * are elements [...] the remainder of the aggregate shall be initialized
4466 * implicitly the same as objects that have static storage duration. */
4467 static void create_dynamic_null_initializer(ir_entity *entity, dbg_info *dbgi,
4470 /* for unions we must NOT do anything for null initializers */
4471 ir_type *owner = get_entity_owner(entity);
4472 if (is_Union_type(owner)) {
4476 ir_type *ent_type = get_entity_type(entity);
4477 /* create sub-initializers for a compound type */
4478 if (is_compound_type(ent_type)) {
4479 unsigned n_members = get_compound_n_members(ent_type);
4480 for (unsigned n = 0; n < n_members; ++n) {
4481 ir_entity *member = get_compound_member(ent_type, n);
4482 ir_node *addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
4484 create_dynamic_null_initializer(member, dbgi, addr);
4488 if (is_Array_type(ent_type)) {
4489 assert(has_array_upper_bound(ent_type, 0));
4490 long n = get_array_upper_bound_int(ent_type, 0);
4491 for (long i = 0; i < n; ++i) {
4492 ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
4493 ir_tarval *index_tv = new_tarval_from_long(i, mode_uint);
4494 ir_node *cnst = new_d_Const(dbgi, index_tv);
4495 ir_node *in[1] = { cnst };
4496 ir_entity *arrent = get_array_element_entity(ent_type);
4497 ir_node *addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
4499 create_dynamic_null_initializer(arrent, dbgi, addr);
4504 ir_mode *value_mode = get_type_mode(ent_type);
4505 ir_node *node = new_Const(get_mode_null(value_mode));
4507 /* is it a bitfield type? */
4508 if (is_Primitive_type(ent_type) &&
4509 get_primitive_base_type(ent_type) != NULL) {
4510 bitfield_store_to_firm(dbgi, entity, base_addr, node, false, false);
4514 ir_node *mem = get_store();
4515 ir_node *store = new_d_Store(dbgi, mem, base_addr, node, cons_none);
4516 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4520 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
4521 ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr)
4523 switch (get_initializer_kind(initializer)) {
4524 case IR_INITIALIZER_NULL:
4525 create_dynamic_null_initializer(entity, dbgi, base_addr);
4527 case IR_INITIALIZER_CONST: {
4528 ir_node *node = get_initializer_const_value(initializer);
4529 ir_type *ent_type = get_entity_type(entity);
4531 /* is it a bitfield type? */
4532 if (is_Primitive_type(ent_type) &&
4533 get_primitive_base_type(ent_type) != NULL) {
4534 bitfield_store_to_firm(dbgi, entity, base_addr, node, false, false);
4538 ir_node *mem = get_store();
4540 if (is_compound_type(ent_type)) {
4541 ir_node *copyb = new_d_CopyB(dbgi, mem, base_addr, node, ent_type);
4542 new_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
4544 assert(get_type_mode(type) == get_irn_mode(node));
4545 ir_node *store = new_d_Store(dbgi, mem, base_addr, node, cons_none);
4546 new_mem = new_Proj(store, mode_M, pn_Store_M);
4551 case IR_INITIALIZER_TARVAL: {
4552 ir_tarval *tv = get_initializer_tarval_value(initializer);
4553 ir_node *cnst = new_d_Const(dbgi, tv);
4554 ir_type *ent_type = get_entity_type(entity);
4556 /* is it a bitfield type? */
4557 if (is_Primitive_type(ent_type) &&
4558 get_primitive_base_type(ent_type) != NULL) {
4559 bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false, false);
4563 assert(get_type_mode(type) == get_tarval_mode(tv));
4564 ir_node *mem = get_store();
4565 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst, cons_none);
4566 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
4570 case IR_INITIALIZER_COMPOUND: {
4571 assert(is_compound_type(type) || is_Array_type(type));
4573 if (is_Array_type(type)) {
4574 assert(has_array_upper_bound(type, 0));
4575 n_members = get_array_upper_bound_int(type, 0);
4577 n_members = get_compound_n_members(type);
4580 if (get_initializer_compound_n_entries(initializer)
4581 != (unsigned) n_members)
4582 panic("initializer doesn't match compound type");
4584 for (int i = 0; i < n_members; ++i) {
4587 ir_entity *sub_entity;
4588 if (is_Array_type(type)) {
4589 ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
4590 ir_tarval *index_tv = new_tarval_from_long(i, mode_uint);
4591 ir_node *cnst = new_d_Const(dbgi, index_tv);
4592 ir_node *in[1] = { cnst };
4593 irtype = get_array_element_type(type);
4594 sub_entity = get_array_element_entity(type);
4595 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
4598 sub_entity = get_compound_member(type, i);
4599 irtype = get_entity_type(sub_entity);
4600 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
4604 ir_initializer_t *sub_init
4605 = get_initializer_compound_value(initializer, i);
4607 create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
4614 panic("invalid ir_initializer");
4617 static void create_dynamic_initializer(ir_initializer_t *initializer,
4618 dbg_info *dbgi, ir_entity *entity)
4620 ir_node *frame = get_irg_frame(current_ir_graph);
4621 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
4622 ir_type *type = get_entity_type(entity);
4624 create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
4627 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
4628 ir_entity *entity, type_t *type)
4630 ir_node *memory = get_store();
4631 ir_node *nomem = new_NoMem();
4632 ir_node *frame = get_irg_frame(current_ir_graph);
4633 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
4635 if (initializer->kind == INITIALIZER_VALUE) {
4636 initializer_value_t *initializer_value = &initializer->value;
4638 ir_node *value = expression_to_value(initializer_value->value);
4639 type = skip_typeref(type);
4640 assign_value(dbgi, addr, type, value);
4644 if (is_constant_initializer(initializer) == EXPR_CLASS_VARIABLE) {
4645 ir_initializer_t *irinitializer
4646 = create_ir_initializer(initializer, type);
4648 create_dynamic_initializer(irinitializer, dbgi, entity);
4652 /* create a "template" entity which is copied to the entity on the stack */
4653 ir_entity *const init_entity
4654 = create_initializer_entity(dbgi, initializer, type);
4655 ir_node *const src_addr = create_symconst(dbgi, init_entity);
4656 ir_type *const irtype = get_ir_type(type);
4657 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
4659 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
4660 set_store(copyb_mem);
4663 static void create_initializer_local_variable_entity(entity_t *entity)
4665 assert(entity->kind == ENTITY_VARIABLE);
4666 initializer_t *initializer = entity->variable.initializer;
4667 dbg_info *dbgi = get_dbg_info(&entity->base.pos);
4668 ir_entity *irentity = entity->variable.v.entity;
4669 type_t *type = entity->declaration.type;
4671 create_local_initializer(initializer, dbgi, irentity, type);
4674 static void create_variable_initializer(entity_t *entity)
4676 assert(entity->kind == ENTITY_VARIABLE);
4677 initializer_t *initializer = entity->variable.initializer;
4678 if (initializer == NULL)
4681 declaration_kind_t declaration_kind
4682 = (declaration_kind_t) entity->declaration.kind;
4683 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
4684 create_initializer_local_variable_entity(entity);
4688 type_t *type = entity->declaration.type;
4689 type_qualifiers_t tq = get_type_qualifier(type, true);
4691 if (initializer->kind == INITIALIZER_VALUE) {
4692 expression_t * value = initializer->value.value;
4693 type_t *const init_type = skip_typeref(value->base.type);
4695 if (is_type_complex(init_type)) {
4696 complex_value nodes = expression_to_complex(value);
4697 dbg_info *dbgi = get_dbg_info(&entity->base.pos);
4698 ir_mode *mode = get_complex_mode_storage(init_type);
4699 ir_node *real = create_conv(dbgi, nodes.real, mode);
4700 ir_node *imag = create_conv(dbgi, nodes.imag, mode);
4701 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
4702 set_value(entity->variable.v.value_number, real);
4703 set_value(entity->variable.v.value_number+1, imag);
4705 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4706 ir_entity *irentity = entity->variable.v.entity;
4707 if (tq & TYPE_QUALIFIER_CONST
4708 && get_entity_owner(irentity) != get_tls_type()) {
4709 add_entity_linkage(irentity, IR_LINKAGE_CONSTANT);
4711 ir_initializer_t *complex_init = create_initializer_compound(2);
4712 ir_initializer_t *reali = create_initializer_const(real);
4713 set_initializer_compound_value(complex_init, 0, reali);
4714 ir_initializer_t *imagi = create_initializer_const(imag);
4715 set_initializer_compound_value(complex_init, 1, imagi);
4716 set_entity_initializer(irentity, complex_init);
4719 } else if (!is_type_scalar(init_type)) {
4720 if (value->kind != EXPR_COMPOUND_LITERAL)
4721 panic("expected non-scalar initializer to be a compound literal");
4722 initializer = value->compound_literal.initializer;
4723 goto have_initializer;
4726 ir_node * node = expression_to_value(value);
4727 dbg_info *const dbgi = get_dbg_info(&entity->base.pos);
4728 node = conv_to_storage_type(dbgi, node, init_type);
4730 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
4731 set_value(entity->variable.v.value_number, node);
4733 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4735 ir_entity *irentity = entity->variable.v.entity;
4737 if (tq & TYPE_QUALIFIER_CONST
4738 && get_entity_owner(irentity) != get_tls_type()) {
4739 add_entity_linkage(irentity, IR_LINKAGE_CONSTANT);
4741 set_atomic_ent_value(irentity, node);
4745 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
4746 declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
4748 ir_entity *irentity = entity->variable.v.entity;
4749 ir_initializer_t *irinitializer
4750 = create_ir_initializer(initializer, type);
4752 if (tq & TYPE_QUALIFIER_CONST) {
4753 add_entity_linkage(irentity, IR_LINKAGE_CONSTANT);
4755 set_entity_initializer(irentity, irinitializer);
4759 static void create_variable_length_array(entity_t *entity)
4761 assert(entity->kind == ENTITY_VARIABLE);
4762 assert(entity->variable.initializer == NULL);
4764 entity->declaration.kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
4765 entity->variable.v.vla_base = NULL;
4767 /* TODO: record VLA somewhere so we create the free node when we leave
4771 static void allocate_variable_length_array(entity_t *entity)
4773 assert(entity->kind == ENTITY_VARIABLE);
4774 assert(entity->variable.initializer == NULL);
4775 assert(currently_reachable());
4777 dbg_info *dbgi = get_dbg_info(&entity->base.pos);
4778 type_t *type = entity->declaration.type;
4779 ir_type *el_type = get_ir_type(type->array.element_type);
4781 /* make sure size_node is calculated */
4782 get_type_size_node(type);
4783 ir_node *elems = type->array.size_node;
4784 ir_node *mem = get_store();
4785 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
4787 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
4788 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
4791 assert(entity->declaration.kind == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
4792 entity->variable.v.vla_base = addr;
4795 static bool var_needs_entity(variable_t const *const var)
4797 if (var->address_taken)
4799 type_t *const type = skip_typeref(var->base.type);
4800 return (!is_type_scalar(type) && !is_type_complex(type))
4801 || type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
4805 * Creates a Firm local variable from a declaration.
4807 static void create_local_variable(entity_t *entity)
4809 assert(entity->kind == ENTITY_VARIABLE);
4810 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4812 if (!var_needs_entity(&entity->variable)) {
4813 entity->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
4814 entity->variable.v.value_number = next_value_number_function;
4815 set_irg_loc_description(current_ir_graph, next_value_number_function, entity);
4816 ++next_value_number_function;
4817 if (is_type_complex(skip_typeref(entity->declaration.type)))
4818 ++next_value_number_function;
4822 /* is it a variable length array? */
4823 type_t *const type = skip_typeref(entity->declaration.type);
4824 if (is_type_array(type) && !type->array.size_constant) {
4825 create_variable_length_array(entity);
4829 ir_type *const frame_type = get_irg_frame_type(current_ir_graph);
4830 create_variable_entity(entity, DECLARATION_KIND_LOCAL_VARIABLE_ENTITY, frame_type);
4833 static void create_local_static_variable(entity_t *entity)
4835 assert(entity->kind == ENTITY_VARIABLE);
4836 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4838 type_t *type = skip_typeref(entity->declaration.type);
4839 ir_type *const var_type = entity->variable.thread_local ?
4840 get_tls_type() : get_glob_type();
4841 ir_type *const irtype = get_ir_type(type);
4842 dbg_info *const dbgi = get_dbg_info(&entity->base.pos);
4844 size_t l = strlen(entity->base.symbol->string);
4845 char buf[l + sizeof(".%u")];
4846 snprintf(buf, sizeof(buf), "%s.%%u", entity->base.symbol->string);
4847 ident *const id = id_unique(buf);
4848 ir_entity *const irentity = new_d_entity(var_type, id, irtype, dbgi);
4850 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4851 set_entity_volatility(irentity, volatility_is_volatile);
4854 entity->declaration.kind = DECLARATION_KIND_GLOBAL_VARIABLE;
4855 entity->variable.v.entity = irentity;
4857 set_entity_ld_ident(irentity, id);
4858 set_entity_visibility(irentity, ir_visibility_local);
4860 if (entity->variable.initializer == NULL) {
4861 ir_initializer_t *null_init = get_initializer_null();
4862 set_entity_initializer(irentity, null_init);
4865 PUSH_IRG(get_const_code_irg());
4866 create_variable_initializer(entity);
4870 static ir_node *return_statement_to_firm(return_statement_t *statement)
4872 if (!currently_reachable())
4875 dbg_info *const dbgi = get_dbg_info(&statement->base.pos);
4876 type_t *const type = skip_typeref(current_function_entity->declaration.type->function.return_type);
4880 if (is_type_void(type)) {
4881 /* just create the side effects, don't return anything */
4882 if (statement->value)
4883 evaluate_expression_discard_result(statement->value);
4886 } else if (is_type_complex(type)) {
4887 if (statement->value) {
4888 complex_value value = expression_to_complex(statement->value);
4889 in[0] = complex_to_memory(dbgi, type, value);
4891 in[0] = new_Unknown(mode_P_data);
4895 ir_mode *const mode = get_ir_mode_storage(type);
4896 if (statement->value) {
4897 ir_node *value = expression_to_value(statement->value);
4898 value = conv_to_storage_type(dbgi, value, type);
4899 in[0] = create_conv(dbgi, value, mode);
4901 in[0] = new_Unknown(mode);
4906 ir_node *const store = get_store();
4907 ir_node *const ret = new_d_Return(dbgi, store, in_len, in);
4909 ir_node *end_block = get_irg_end_block(current_ir_graph);
4910 add_immBlock_pred(end_block, ret);
4912 set_unreachable_now();
4916 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
4918 if (!currently_reachable())
4921 expression_t *expression = statement->expression;
4922 type_t *type = skip_typeref(expression->base.type);
4923 if (is_type_complex(type)) {
4924 expression_to_complex(expression);
4927 return expression_to_value(statement->expression);
4931 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
4933 create_local_declarations(compound->scope.entities);
4935 ir_node *result = NULL;
4936 statement_t *statement = compound->statements;
4937 for ( ; statement != NULL; statement = statement->base.next) {
4938 result = statement_to_firm(statement);
4944 static void create_global_variable(entity_t *entity)
4946 ir_linkage linkage = IR_LINKAGE_DEFAULT;
4947 ir_visibility visibility = ir_visibility_external;
4948 storage_class_tag_t storage
4949 = (storage_class_tag_t)entity->declaration.storage_class;
4950 decl_modifiers_t modifiers = entity->declaration.modifiers;
4951 assert(entity->kind == ENTITY_VARIABLE);
4954 case STORAGE_CLASS_EXTERN: visibility = ir_visibility_external; break;
4955 case STORAGE_CLASS_STATIC: visibility = ir_visibility_local; break;
4956 case STORAGE_CLASS_NONE: visibility = ir_visibility_external; break;
4957 case STORAGE_CLASS_TYPEDEF:
4958 case STORAGE_CLASS_AUTO:
4959 case STORAGE_CLASS_REGISTER:
4960 panic("invalid storage class for global var");
4963 /* "common" symbols */
4964 if (storage == STORAGE_CLASS_NONE
4965 && entity->variable.initializer == NULL
4966 && !entity->variable.thread_local
4967 && (modifiers & DM_WEAK) == 0) {
4968 linkage |= IR_LINKAGE_MERGE;
4971 ir_type *var_type = get_glob_type();
4972 if (entity->variable.thread_local) {
4973 var_type = get_tls_type();
4975 create_variable_entity(entity, DECLARATION_KIND_GLOBAL_VARIABLE, var_type);
4976 ir_entity *irentity = entity->variable.v.entity;
4977 add_entity_linkage(irentity, linkage);
4978 set_entity_visibility(irentity, visibility);
4979 if (entity->variable.initializer == NULL
4980 && storage != STORAGE_CLASS_EXTERN) {
4981 ir_initializer_t *null_init = get_initializer_null();
4982 set_entity_initializer(irentity, null_init);
4986 static void create_local_declaration(entity_t *entity)
4988 assert(is_declaration(entity));
4990 /* construct type */
4991 (void) get_ir_type(entity->declaration.type);
4992 if (entity->base.symbol == NULL) {
4996 switch ((storage_class_tag_t) entity->declaration.storage_class) {
4997 case STORAGE_CLASS_STATIC:
4998 if (entity->kind == ENTITY_FUNCTION) {
4999 (void)get_function_entity(entity, NULL);
5001 create_local_static_variable(entity);
5004 case STORAGE_CLASS_EXTERN:
5005 if (entity->kind == ENTITY_FUNCTION) {
5006 assert(entity->function.body == NULL);
5007 (void)get_function_entity(entity, NULL);
5009 create_global_variable(entity);
5010 create_variable_initializer(entity);
5013 case STORAGE_CLASS_NONE:
5014 case STORAGE_CLASS_AUTO:
5015 case STORAGE_CLASS_REGISTER:
5016 if (entity->kind == ENTITY_FUNCTION) {
5017 if (entity->function.body != NULL) {
5018 ir_type *owner = get_irg_frame_type(current_ir_graph);
5019 (void)get_function_entity(entity, owner);
5020 entity->declaration.kind = DECLARATION_KIND_INNER_FUNCTION;
5021 enqueue_inner_function(entity);
5023 (void)get_function_entity(entity, NULL);
5026 create_local_variable(entity);
5029 case STORAGE_CLASS_TYPEDEF:
5032 panic("invalid storage class");
5035 static void create_local_declarations(entity_t *e)
5037 for (; e; e = e->base.next) {
5038 if (is_declaration(e))
5039 create_local_declaration(e);
5043 static void initialize_local_declaration(entity_t *entity)
5045 if (entity->base.symbol == NULL)
5048 // no need to emit code in dead blocks
5049 if (entity->declaration.storage_class != STORAGE_CLASS_STATIC
5050 && !currently_reachable())
5053 switch ((declaration_kind_t) entity->declaration.kind) {
5054 case DECLARATION_KIND_LOCAL_VARIABLE:
5055 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
5056 create_variable_initializer(entity);
5059 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
5060 allocate_variable_length_array(entity);
5063 case DECLARATION_KIND_COMPOUND_MEMBER:
5064 case DECLARATION_KIND_GLOBAL_VARIABLE:
5065 case DECLARATION_KIND_FUNCTION:
5066 case DECLARATION_KIND_INNER_FUNCTION:
5069 case DECLARATION_KIND_PARAMETER:
5070 case DECLARATION_KIND_PARAMETER_ENTITY:
5071 panic("can't initialize parameters");
5073 case DECLARATION_KIND_UNKNOWN:
5074 panic("can't initialize unknown declaration");
5076 panic("invalid declaration kind");
5079 static ir_node *declaration_statement_to_firm(declaration_statement_t *statement)
5081 entity_t *entity = statement->declarations_begin;
5085 entity_t *const last = statement->declarations_end;
5086 for ( ;; entity = entity->base.next) {
5087 if (is_declaration(entity)) {
5088 initialize_local_declaration(entity);
5089 } else if (entity->kind == ENTITY_TYPEDEF) {
5090 /* ยง6.7.7:3 Any array size expressions associated with variable length
5091 * array declarators are evaluated each time the declaration of the
5092 * typedef name is reached in the order of execution. */
5093 type_t *const type = skip_typeref(entity->typedefe.type);
5094 if (is_type_array(type) && type->array.is_vla)
5095 get_vla_size(&type->array);
5104 static ir_node *if_statement_to_firm(if_statement_t *statement)
5106 create_local_declarations(statement->scope.entities);
5108 /* Create the condition. */
5109 jump_target true_target;
5110 jump_target false_target;
5111 init_jump_target(&true_target, NULL);
5112 init_jump_target(&false_target, NULL);
5113 if (currently_reachable())
5114 expression_to_control_flow(statement->condition, &true_target, &false_target);
5116 jump_target exit_target;
5117 init_jump_target(&exit_target, NULL);
5119 /* Create the true statement. */
5120 enter_jump_target(&true_target);
5121 statement_to_firm(statement->true_statement);
5122 jump_to_target(&exit_target);
5124 /* Create the false statement. */
5125 enter_jump_target(&false_target);
5126 if (statement->false_statement)
5127 statement_to_firm(statement->false_statement);
5128 jump_to_target(&exit_target);
5130 enter_jump_target(&exit_target);
5134 static ir_node *do_while_statement_to_firm(do_while_statement_t *statement)
5136 create_local_declarations(statement->scope.entities);
5139 PUSH_CONTINUE(NULL);
5141 expression_t *const cond = statement->condition;
5142 /* Avoid an explicit body block in case of do ... while (0);. */
5143 if (is_constant_expression(cond) != EXPR_CLASS_VARIABLE && !fold_constant_to_bool(cond)) {
5144 /* do ... while (0);. */
5145 statement_to_firm(statement->body);
5146 jump_to_target(&continue_target);
5147 enter_jump_target(&continue_target);
5148 jump_to_target(&break_target);
5150 jump_target body_target;
5151 init_jump_target(&body_target, NULL);
5152 jump_to_target(&body_target);
5153 enter_immature_jump_target(&body_target);
5155 statement_to_firm(statement->body);
5156 jump_to_target(&continue_target);
5157 if (enter_jump_target(&continue_target))
5158 expression_to_control_flow(statement->condition, &body_target, &break_target);
5159 enter_jump_target(&body_target);
5161 enter_jump_target(&break_target);
5168 static ir_node *for_statement_to_firm(for_statement_t *statement)
5170 create_local_declarations(statement->scope.entities);
5172 if (currently_reachable()) {
5173 entity_t *entity = statement->scope.entities;
5174 for ( ; entity != NULL; entity = entity->base.next) {
5175 if (!is_declaration(entity))
5178 initialize_local_declaration(entity);
5181 if (statement->initialisation != NULL) {
5182 expression_to_value(statement->initialisation);
5186 /* Create the header block */
5187 jump_target header_target;
5188 init_jump_target(&header_target, NULL);
5189 jump_to_target(&header_target);
5190 enter_immature_jump_target(&header_target);
5193 expression_t *const step = statement->step;
5195 PUSH_CONTINUE(step ? NULL : header_target.block);
5197 /* Create the condition. */
5198 expression_t *const cond = statement->condition;
5199 if (cond && (is_constant_expression(cond) == EXPR_CLASS_VARIABLE || !fold_constant_to_bool(cond))) {
5200 jump_target body_target;
5201 init_jump_target(&body_target, NULL);
5202 expression_to_control_flow(cond, &body_target, &break_target);
5203 enter_jump_target(&body_target);
5206 /* Create the loop body. */
5207 statement_to_firm(statement->body);
5208 jump_to_target(&continue_target);
5210 /* Create the step code. */
5211 if (step && enter_jump_target(&continue_target)) {
5212 expression_to_value(step);
5213 jump_to_target(&header_target);
5216 enter_jump_target(&header_target);
5217 enter_jump_target(&break_target);
5224 static ir_switch_table *create_switch_table(const switch_statement_t *statement)
5226 /* determine number of cases */
5228 for (case_label_statement_t *l = statement->first_case; l != NULL;
5231 if (l->expression == NULL)
5233 if (l->is_empty_range)
5238 ir_switch_table *res = ir_new_switch_table(current_ir_graph, n_cases);
5240 for (case_label_statement_t *l = statement->first_case; l != NULL;
5242 if (l->expression == NULL) {
5243 l->pn = pn_Switch_default;
5246 if (l->is_empty_range)
5248 ir_tarval *min = l->first_case;
5249 ir_tarval *max = l->last_case;
5250 long pn = (long) i+1;
5251 ir_switch_table_set(res, i++, min, max, pn);
5257 static ir_node *switch_statement_to_firm(switch_statement_t *statement)
5259 dbg_info *dbgi = get_dbg_info(&statement->base.pos);
5260 ir_node *switch_node = NULL;
5262 if (currently_reachable()) {
5263 ir_node *expression = expression_to_value(statement->expression);
5264 ir_switch_table *table = create_switch_table(statement);
5265 unsigned n_outs = (unsigned)ir_switch_table_get_n_entries(table) + 1;
5267 switch_node = new_d_Switch(dbgi, expression, n_outs, table);
5270 set_unreachable_now();
5273 ir_node *const old_switch = current_switch;
5274 const bool old_saw_default_label = saw_default_label;
5275 saw_default_label = false;
5276 current_switch = switch_node;
5278 statement_to_firm(statement->body);
5279 jump_to_target(&break_target);
5281 if (!saw_default_label && switch_node) {
5282 ir_node *proj = new_d_Proj(dbgi, switch_node, mode_X, pn_Switch_default);
5283 add_pred_to_jump_target(&break_target, proj);
5286 enter_jump_target(&break_target);
5288 assert(current_switch == switch_node);
5289 current_switch = old_switch;
5290 saw_default_label = old_saw_default_label;
5295 static ir_node *case_label_to_firm(const case_label_statement_t *statement)
5297 if (current_switch != NULL && !statement->is_empty_range) {
5298 jump_target case_target;
5299 init_jump_target(&case_target, NULL);
5301 /* Fallthrough from previous case */
5302 jump_to_target(&case_target);
5304 ir_node *const proj = new_Proj(current_switch, mode_X, statement->pn);
5305 add_pred_to_jump_target(&case_target, proj);
5306 if (statement->expression == NULL)
5307 saw_default_label = true;
5309 enter_jump_target(&case_target);
5312 return statement_to_firm(statement->statement);
5315 static ir_node *label_to_firm(const label_statement_t *statement)
5317 label_t *const label = statement->label;
5318 prepare_label_target(label);
5319 jump_to_target(&label->target);
5320 if (--label->n_users == 0) {
5321 enter_jump_target(&label->target);
5323 enter_immature_jump_target(&label->target);
5327 return statement_to_firm(statement->statement);
5330 static ir_node *goto_statement_to_firm(goto_statement_t *const stmt)
5332 label_t *const label = stmt->label;
5333 prepare_label_target(label);
5334 jump_to_target(&label->target);
5335 if (--label->n_users == 0)
5336 enter_jump_target(&label->target);
5337 set_unreachable_now();
5341 static ir_node *computed_goto_to_firm(computed_goto_statement_t const *const statement)
5343 if (currently_reachable()) {
5344 ir_node *const op = expression_to_value(statement->expression);
5345 ARR_APP1(ir_node*, ijmp_ops, op);
5346 jump_to_target(&ijmp_target);
5347 set_unreachable_now();
5352 static ir_node *asm_statement_to_firm(const asm_statement_t *statement)
5354 bool needs_memory = statement->is_volatile;
5355 size_t n_clobbers = 0;
5356 asm_clobber_t *clobber = statement->clobbers;
5357 for ( ; clobber != NULL; clobber = clobber->next) {
5358 const char *clobber_str = clobber->clobber.begin;
5360 if (!be_is_valid_clobber(clobber_str)) {
5361 errorf(&statement->base.pos,
5362 "invalid clobber '%s' specified", clobber->clobber);
5366 if (streq(clobber_str, "memory")) {
5367 needs_memory = true;
5371 ident *id = new_id_from_str(clobber_str);
5372 obstack_ptr_grow(&asm_obst, id);
5375 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
5376 ident **clobbers = NULL;
5377 if (n_clobbers > 0) {
5378 clobbers = obstack_finish(&asm_obst);
5381 size_t n_inputs = 0;
5382 asm_argument_t *argument = statement->inputs;
5383 for ( ; argument != NULL; argument = argument->next)
5385 size_t n_outputs = 0;
5386 argument = statement->outputs;
5387 for ( ; argument != NULL; argument = argument->next)
5390 unsigned next_pos = 0;
5392 ir_node *ins[n_inputs + n_outputs + 1];
5395 ir_asm_constraint tmp_in_constraints[n_outputs];
5397 const expression_t *out_exprs[n_outputs];
5398 ir_node *out_addrs[n_outputs];
5399 size_t out_size = 0;
5401 argument = statement->outputs;
5402 for ( ; argument != NULL; argument = argument->next) {
5403 const char *constraints = argument->constraints.begin;
5404 asm_constraint_flags_t asm_flags
5405 = be_parse_asm_constraints(constraints);
5408 position_t const *const pos = &statement->base.pos;
5409 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5410 warningf(WARN_OTHER, pos, "some constraints in '%s' are not supported", constraints);
5412 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5413 errorf(pos, "some constraints in '%s' are invalid", constraints);
5416 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
5417 errorf(pos, "no write flag specified for output constraints '%s'", constraints);
5422 unsigned pos = next_pos++;
5423 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5424 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5425 expression_t *expr = argument->expression;
5426 ir_node *addr = expression_to_addr(expr);
5427 /* in+output, construct an artifical same_as constraint on the
5429 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
5431 ir_node *value = get_value_from_lvalue(expr, addr);
5433 snprintf(buf, sizeof(buf), "%u", (unsigned) out_size);
5435 ir_asm_constraint constraint;
5436 constraint.pos = pos;
5437 constraint.constraint = new_id_from_str(buf);
5438 constraint.mode = get_ir_mode_storage(expr->base.type);
5439 tmp_in_constraints[in_size] = constraint;
5440 ins[in_size] = value;
5445 out_exprs[out_size] = expr;
5446 out_addrs[out_size] = addr;
5448 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5449 /* pure memory ops need no input (but we have to make sure we
5450 * attach to the memory) */
5451 assert(! (asm_flags &
5452 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5453 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5454 needs_memory = true;
5456 /* we need to attach the address to the inputs */
5457 expression_t *expr = argument->expression;
5459 ir_asm_constraint constraint;
5460 constraint.pos = pos;
5461 constraint.constraint = new_id_from_str(constraints);
5462 constraint.mode = mode_M;
5463 tmp_in_constraints[in_size] = constraint;
5465 ins[in_size] = expression_to_addr(expr);
5469 errorf(&statement->base.pos,
5470 "only modifiers but no place set in constraints '%s'",
5475 ir_asm_constraint constraint;
5476 constraint.pos = pos;
5477 constraint.constraint = new_id_from_str(constraints);
5478 constraint.mode = get_ir_mode_storage(argument->expression->base.type);
5480 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5482 assert(obstack_object_size(&asm_obst)
5483 == out_size * sizeof(ir_asm_constraint));
5484 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
5487 obstack_grow(&asm_obst, tmp_in_constraints,
5488 in_size * sizeof(tmp_in_constraints[0]));
5489 /* find and count input and output arguments */
5490 argument = statement->inputs;
5491 for ( ; argument != NULL; argument = argument->next) {
5492 const char *constraints = argument->constraints.begin;
5493 asm_constraint_flags_t asm_flags
5494 = be_parse_asm_constraints(constraints);
5496 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
5497 errorf(&statement->base.pos,
5498 "some constraints in '%s' are not supported", constraints);
5501 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
5502 errorf(&statement->base.pos,
5503 "some constraints in '%s' are invalid", constraints);
5506 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
5507 errorf(&statement->base.pos,
5508 "write flag specified for input constraints '%s'",
5514 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
5515 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
5516 /* we can treat this as "normal" input */
5517 input = expression_to_value(argument->expression);
5518 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
5519 /* pure memory ops need no input (but we have to make sure we
5520 * attach to the memory) */
5521 assert(! (asm_flags &
5522 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
5523 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
5524 needs_memory = true;
5525 input = expression_to_addr(argument->expression);
5527 errorf(&statement->base.pos,
5528 "only modifiers but no place set in constraints '%s'",
5533 ir_asm_constraint constraint;
5534 constraint.pos = next_pos++;
5535 constraint.constraint = new_id_from_str(constraints);
5536 constraint.mode = get_irn_mode(input);
5538 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
5539 ins[in_size++] = input;
5542 ir_node *mem = needs_memory ? get_store() : new_NoMem();
5543 assert(obstack_object_size(&asm_obst)
5544 == in_size * sizeof(ir_asm_constraint));
5545 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
5547 /* create asm node */
5548 dbg_info *dbgi = get_dbg_info(&statement->base.pos);
5550 ident *asm_text = new_id_from_str(statement->asm_text.begin);
5552 ir_node *node = new_d_ASM(dbgi, mem, in_size, ins, input_constraints,
5553 out_size, output_constraints,
5554 n_clobbers, clobbers, asm_text);
5556 if (statement->is_volatile) {
5557 set_irn_pinned(node, op_pin_state_pinned);
5559 set_irn_pinned(node, op_pin_state_floats);
5562 /* create output projs & connect them */
5564 ir_node *projm = new_Proj(node, mode_M, out_size);
5569 for (i = 0; i < out_size; ++i) {
5570 const expression_t *out_expr = out_exprs[i];
5572 ir_mode *mode = get_ir_mode_storage(out_expr->base.type);
5573 ir_node *proj = new_Proj(node, mode, pn);
5574 ir_node *addr = out_addrs[i];
5576 set_value_for_expression_addr(out_expr, proj, addr);
5582 static ir_node *ms_try_statement_to_firm(ms_try_statement_t *statement)
5584 statement_to_firm(statement->try_statement);
5585 position_t const *const pos = &statement->base.pos;
5586 warningf(WARN_OTHER, pos, "structured exception handling ignored");
5590 static ir_node *leave_statement_to_firm(leave_statement_t *statement)
5592 errorf(&statement->base.pos, "__leave not supported yet");
5597 * Transform a statement.
5599 static ir_node *statement_to_firm(statement_t *const stmt)
5602 assert(!stmt->base.transformed);
5603 stmt->base.transformed = true;
5606 switch (stmt->kind) {
5607 case STATEMENT_ASM: return asm_statement_to_firm( &stmt->asms);
5608 case STATEMENT_CASE_LABEL: return case_label_to_firm( &stmt->case_label);
5609 case STATEMENT_COMPOUND: return compound_statement_to_firm( &stmt->compound);
5610 case STATEMENT_COMPUTED_GOTO: return computed_goto_to_firm( &stmt->computed_goto);
5611 case STATEMENT_DECLARATION: return declaration_statement_to_firm(&stmt->declaration);
5612 case STATEMENT_DO_WHILE: return do_while_statement_to_firm( &stmt->do_while);
5613 case STATEMENT_EMPTY: return NULL; /* nothing */
5614 case STATEMENT_EXPRESSION: return expression_statement_to_firm( &stmt->expression);
5615 case STATEMENT_FOR: return for_statement_to_firm( &stmt->fors);
5616 case STATEMENT_GOTO: return goto_statement_to_firm( &stmt->gotos);
5617 case STATEMENT_IF: return if_statement_to_firm( &stmt->ifs);
5618 case STATEMENT_LABEL: return label_to_firm( &stmt->label);
5619 case STATEMENT_LEAVE: return leave_statement_to_firm( &stmt->leave);
5620 case STATEMENT_MS_TRY: return ms_try_statement_to_firm( &stmt->ms_try);
5621 case STATEMENT_RETURN: return return_statement_to_firm( &stmt->returns);
5622 case STATEMENT_SWITCH: return switch_statement_to_firm( &stmt->switchs);
5626 case STATEMENT_BREAK: tgt = &break_target; goto jump;
5627 case STATEMENT_CONTINUE: tgt = &continue_target; goto jump;
5629 jump_to_target(tgt);
5630 set_unreachable_now();
5634 case STATEMENT_ERROR: panic("error statement");
5636 panic("statement not implemented");
5639 static int count_local_variables(const entity_t *entity,
5640 const entity_t *const last)
5643 entity_t const *const end = last != NULL ? last->base.next : NULL;
5644 for (; entity != end; entity = entity->base.next) {
5645 if ((entity->kind == ENTITY_VARIABLE || entity->kind == ENTITY_PARAMETER) &&
5646 !var_needs_entity(&entity->variable)) {
5647 type_t *type = skip_typeref(entity->declaration.type);
5648 count += is_type_complex(type) ? 2 : 1;
5654 static void count_local_variables_in_stmt(statement_t *stmt, void *const env)
5656 int *const count = env;
5658 switch (stmt->kind) {
5659 case STATEMENT_DECLARATION: {
5660 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5661 *count += count_local_variables(decl_stmt->declarations_begin,
5662 decl_stmt->declarations_end);
5667 *count += count_local_variables(stmt->fors.scope.entities, NULL);
5676 * Return the number of local (alias free) variables used by a function.
5678 static int get_function_n_local_vars(entity_t *entity)
5680 const function_t *function = &entity->function;
5683 /* count parameters */
5684 count += count_local_variables(function->parameters.entities, NULL);
5686 /* count local variables declared in body */
5687 walk_statements(function->body, count_local_variables_in_stmt, &count);
5692 * Build Firm code for the parameters of a function.
5694 static void initialize_function_parameters(entity_t *entity)
5696 assert(entity->kind == ENTITY_FUNCTION);
5697 ir_graph *irg = current_ir_graph;
5698 ir_node *args = get_irg_args(irg);
5700 ir_type *function_irtype;
5702 if (entity->function.need_closure) {
5703 /* add an extra parameter for the static link */
5704 entity->function.static_link = new_r_Proj(args, mode_P_data, 0);
5707 /* Matze: IMO this is wrong, nested functions should have an own
5708 * type and not rely on strange parameters... */
5709 function_irtype = create_method_type(&entity->declaration.type->function, true);
5711 function_irtype = get_ir_type(entity->declaration.type);
5714 entity_t *parameter = entity->function.parameters.entities;
5715 for ( ; parameter != NULL; parameter = parameter->base.next, ++n) {
5716 if (parameter->kind != ENTITY_PARAMETER)
5719 assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN);
5720 type_t *type = skip_typeref(parameter->declaration.type);
5722 dbg_info *const dbgi = get_dbg_info(¶meter->base.pos);
5723 ir_type *const param_irtype = get_method_param_type(function_irtype, n);
5724 if (var_needs_entity(¶meter->variable)) {
5725 ir_type *frame_type = get_irg_frame_type(irg);
5727 = new_d_parameter_entity(frame_type, n, param_irtype, dbgi);
5728 parameter->declaration.kind = DECLARATION_KIND_PARAMETER_ENTITY;
5729 parameter->variable.v.entity = param;
5730 } else if (is_type_complex(type)) {
5731 ir_type *frame_type = get_irg_frame_type(irg);
5733 = new_d_parameter_entity(frame_type, n, param_irtype, dbgi);
5734 ir_node *nomem = get_irg_no_mem(irg);
5735 ir_node *frame = get_irg_frame(irg);
5736 ir_node *addr = new_simpleSel(nomem, frame, param);
5737 complex_value value = complex_deref_address(NULL, type, addr, cons_floats);
5739 parameter->declaration.kind = DECLARATION_KIND_PARAMETER;
5740 parameter->variable.v.value_number = next_value_number_function;
5741 set_irg_loc_description(irg, next_value_number_function,
5743 set_irg_loc_description(irg, next_value_number_function+1,
5745 set_value(next_value_number_function, value.real);
5746 set_value(next_value_number_function+1, value.imag);
5747 next_value_number_function += 2;
5749 ir_mode *param_mode = get_type_mode(param_irtype);
5751 ir_node *value = new_rd_Proj(dbgi, args, param_mode, pn);
5752 value = conv_to_storage_type(dbgi, value, type);
5754 parameter->declaration.kind = DECLARATION_KIND_PARAMETER;
5755 parameter->variable.v.value_number = next_value_number_function;
5756 set_irg_loc_description(irg, next_value_number_function,
5758 ++next_value_number_function;
5760 set_value(parameter->variable.v.value_number, value);
5765 static void add_function_pointer(ir_type *segment, ir_entity *method,
5766 const char *unique_template)
5768 ir_type *method_type = get_entity_type(method);
5769 ir_type *ptr_type = new_type_pointer(method_type);
5771 /* these entities don't really have a name but firm only allows
5773 * Note that we mustn't give these entities a name since for example
5774 * Mach-O doesn't allow them. */
5775 ident *ide = id_unique(unique_template);
5776 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5777 ir_graph *irg = get_const_code_irg();
5778 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5781 set_entity_ld_ident(ptr, new_id_from_chars("", 0));
5782 set_entity_compiler_generated(ptr, 1);
5783 set_entity_visibility(ptr, ir_visibility_private);
5784 add_entity_linkage(ptr, IR_LINKAGE_CONSTANT|IR_LINKAGE_HIDDEN_USER);
5785 set_atomic_ent_value(ptr, val);
5789 * Create code for a function and all inner functions.
5791 * @param entity the function entity
5793 static void create_function(entity_t *entity)
5795 assert(entity->kind == ENTITY_FUNCTION);
5796 ir_entity *function_entity = get_function_entity(entity, current_outer_frame);
5798 if (entity->function.body == NULL)
5801 inner_functions = NULL;
5802 current_trampolines = NULL;
5804 if (entity->declaration.modifiers & DM_CONSTRUCTOR) {
5805 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5806 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5808 if (entity->declaration.modifiers & DM_DESTRUCTOR) {
5809 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5810 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5813 current_function_entity = entity;
5814 current_function_name = NULL;
5815 current_funcsig = NULL;
5818 assert(!ijmp_blocks);
5819 init_jump_target(&ijmp_target, NULL);
5820 ijmp_ops = NEW_ARR_F(ir_node*, 0);
5821 ijmp_blocks = NEW_ARR_F(ir_node*, 0);
5823 int n_local_vars = get_function_n_local_vars(entity);
5824 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5825 current_ir_graph = irg;
5827 ir_graph *old_current_function = current_function;
5828 current_function = irg;
5830 ir_entity *const old_current_vararg_entity = current_vararg_entity;
5831 current_vararg_entity = NULL;
5833 set_irg_fp_model(irg, firm_fp_model);
5834 set_irn_dbg_info(get_irg_start_block(irg),
5835 get_entity_dbg_info(function_entity));
5837 next_value_number_function = 0;
5838 initialize_function_parameters(entity);
5839 current_static_link = entity->function.static_link;
5841 statement_to_firm(entity->function.body);
5843 ir_node *end_block = get_irg_end_block(irg);
5845 /* do we have a return statement yet? */
5846 if (currently_reachable()) {
5847 type_t *type = skip_typeref(entity->declaration.type);
5848 assert(is_type_function(type));
5849 type_t *const return_type = skip_typeref(type->function.return_type);
5852 if (is_type_void(return_type)) {
5853 ret = new_Return(get_store(), 0, NULL);
5855 ir_mode *const mode = get_ir_mode_storage(return_type);
5858 /* ยง5.1.2.2.3 main implicitly returns 0 */
5859 if (is_main(entity)) {
5860 in[0] = new_Const(get_mode_null(mode));
5862 in[0] = new_Unknown(mode);
5864 ret = new_Return(get_store(), 1, in);
5866 add_immBlock_pred(end_block, ret);
5869 if (enter_jump_target(&ijmp_target)) {
5871 size_t const n = ARR_LEN(ijmp_ops);
5872 ir_node *const op = n == 1 ? ijmp_ops[0] : new_Phi(n, ijmp_ops, get_irn_mode(ijmp_ops[0]));
5873 ir_node *const ijmp = new_IJmp(op);
5874 for (size_t i = ARR_LEN(ijmp_blocks); i-- != 0;) {
5875 ir_node *const block = ijmp_blocks[i];
5876 add_immBlock_pred(block, ijmp);
5877 mature_immBlock(block);
5881 DEL_ARR_F(ijmp_ops);
5882 DEL_ARR_F(ijmp_blocks);
5886 irg_finalize_cons(irg);
5888 irg_verify(irg, VERIFY_ENFORCE_SSA);
5889 current_vararg_entity = old_current_vararg_entity;
5890 current_function = old_current_function;
5892 if (current_trampolines != NULL) {
5893 DEL_ARR_F(current_trampolines);
5894 current_trampolines = NULL;
5897 /* create inner functions if any */
5898 entity_t **inner = inner_functions;
5899 if (inner != NULL) {
5900 ir_type *rem_outer_frame = current_outer_frame;
5901 current_outer_frame = get_irg_frame_type(current_ir_graph);
5902 for (int i = ARR_LEN(inner) - 1; i >= 0; --i) {
5903 create_function(inner[i]);
5907 current_outer_frame = rem_outer_frame;
5911 static void scope_to_firm(scope_t *scope)
5913 /* first pass: create declarations */
5914 entity_t *entity = scope->entities;
5915 for ( ; entity != NULL; entity = entity->base.next) {
5916 if (entity->base.symbol == NULL)
5919 if (entity->kind == ENTITY_FUNCTION) {
5920 if (entity->function.btk != BUILTIN_NONE) {
5921 /* builtins have no representation */
5924 (void)get_function_entity(entity, NULL);
5925 } else if (entity->kind == ENTITY_VARIABLE) {
5926 create_global_variable(entity);
5927 } else if (entity->kind == ENTITY_NAMESPACE) {
5928 scope_to_firm(&entity->namespacee.members);
5932 /* second pass: create code/initializers */
5933 entity = scope->entities;
5934 for ( ; entity != NULL; entity = entity->base.next) {
5935 if (entity->base.symbol == NULL)
5938 if (entity->kind == ENTITY_FUNCTION) {
5939 if (entity->function.btk != BUILTIN_NONE) {
5940 /* builtins have no representation */
5943 create_function(entity);
5944 } else if (entity->kind == ENTITY_VARIABLE) {
5945 assert(entity->declaration.kind
5946 == DECLARATION_KIND_GLOBAL_VARIABLE);
5947 current_ir_graph = get_const_code_irg();
5948 create_variable_initializer(entity);
5953 void init_ast2firm(void)
5955 obstack_init(&asm_obst);
5956 init_atomic_modes();
5958 ir_set_debug_retrieve(dbg_retrieve);
5959 ir_set_type_debug_retrieve(dbg_print_type_dbg_info);
5961 /* create idents for all known runtime functions */
5962 for (size_t i = 0; i < lengthof(rts_data); ++i) {
5963 rts_idents[i] = new_id_from_str(rts_data[i].name);
5966 entitymap_init(&entitymap);
5969 static void init_ir_types(void)
5971 static int ir_types_initialized = 0;
5972 if (ir_types_initialized)
5974 ir_types_initialized = 1;
5976 ir_type_char = get_ir_type(type_char);
5978 be_params = be_get_backend_param();
5979 mode_float_arithmetic = be_params->mode_float_arithmetic;
5981 stack_param_align = be_params->stack_param_align;
5984 void exit_ast2firm(void)
5986 entitymap_destroy(&entitymap);
5987 obstack_free(&asm_obst, NULL);
5990 static void global_asm_to_firm(statement_t *s)
5992 for (; s != NULL; s = s->base.next) {
5993 assert(s->kind == STATEMENT_ASM);
5995 char const *const text = s->asms.asm_text.begin;
5996 size_t const size = s->asms.asm_text.size;
5997 ident *const id = new_id_from_chars(text, size);
6002 static const char *get_cwd(void)
6004 static char buf[1024];
6005 if (buf[0] == '\0') {
6006 return getcwd(buf, sizeof(buf));
6011 void translation_unit_to_firm(translation_unit_t *unit)
6013 if (c_mode & _CXX) {
6014 be_dwarf_set_source_language(DW_LANG_C_plus_plus);
6015 } else if (c_mode & _C99) {
6016 be_dwarf_set_source_language(DW_LANG_C99);
6017 } else if (c_mode & _C89) {
6018 be_dwarf_set_source_language(DW_LANG_C89);
6020 be_dwarf_set_source_language(DW_LANG_C);
6022 const char *cwd = get_cwd();
6024 be_dwarf_set_compilation_directory(cwd);
6027 /* initialize firm arithmetic */
6028 tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP);
6029 ir_set_uninitialized_local_variable_func(uninitialized_local_var);
6031 /* just to be sure */
6032 init_jump_target(&break_target, NULL);
6033 init_jump_target(&continue_target, NULL);
6034 current_switch = NULL;
6035 current_translation_unit = unit;
6039 scope_to_firm(&unit->scope);
6040 global_asm_to_firm(unit->global_asm);
6042 current_ir_graph = NULL;
6043 current_translation_unit = NULL;