ir_node *get_atomic_ent_value(const ir_entity *entity) { ir_initializer_t *initializer = get_entity_initializer(entity); assert(is_atomic_entity(entity)); if (initializer == NULL) { ir_type *type = get_entity_type(entity); return new_r_Unknown(get_const_code_irg(), get_type_mode(type)); } switch (get_initializer_kind(initializer)) { case IR_INITIALIZER_NULL: { ir_type *type = get_entity_type(entity); ir_mode *mode = get_type_mode(type); return new_r_Const(get_const_code_irg(), get_mode_null(mode)); } case IR_INITIALIZER_TARVAL: { ir_tarval *tv = get_initializer_tarval_value(initializer); return new_r_Const(get_const_code_irg(), tv); } case IR_INITIALIZER_CONST: return get_initializer_const_value(initializer); case IR_INITIALIZER_COMPOUND: panic("compound initializer in atomic entity not allowed (%+F)", entity); } panic("invalid initializer kind (%+F)", entity); }
static bool initializer_constant_on_wrong_irg(const ir_initializer_t *initializer) { switch (get_initializer_kind(initializer)) { case IR_INITIALIZER_NULL: return 0; case IR_INITIALIZER_TARVAL: return 0; case IR_INITIALIZER_CONST: return constant_on_wrong_irg(get_initializer_const_value(initializer)); case IR_INITIALIZER_COMPOUND: { bool fine = true; for (size_t i = 0, n = get_initializer_compound_n_entries(initializer); i < n; ++i) { const ir_initializer_t *sub = get_initializer_compound_value(initializer, i); fine &= initializer_constant_on_wrong_irg(sub); } return fine; } } panic("invalid initializer"); }
static bool check_initializer(const ir_initializer_t *initializer, const ir_type *type, const ir_entity *context) { bool fine = true; switch (get_initializer_kind(initializer)) { case IR_INITIALIZER_NULL: return fine; case IR_INITIALIZER_TARVAL: { ir_tarval *tv = get_initializer_tarval_value(initializer); if (get_type_mode(type) != get_tarval_mode(tv)) { report_error("tarval initializer for entity %+F has wrong mode: %+F vs %+F", context, get_type_mode(type), get_tarval_mode(tv)); fine = false; } return fine; } case IR_INITIALIZER_CONST: { ir_node *value = get_initializer_const_value(initializer); if (get_type_mode(type) != get_irn_mode(value)) { report_error("const initializer for entity %+F has wrong mode: %+F vs %+F", context, get_type_mode(type), get_irn_mode(value)); fine = false; } if (!constant_on_correct_irg(value)) { report_error("initializer const value %+F for entity %+F not on const-code irg", value, context); fine = false; } return fine; } case IR_INITIALIZER_COMPOUND: { size_t n_entries = get_initializer_compound_n_entries(initializer); if (is_Array_type(type)) { ir_type *element_type = get_array_element_type(type); /* TODO: check array bounds? */ for (size_t i = 0; i < n_entries; ++i) { const ir_initializer_t *sub_initializer = get_initializer_compound_value(initializer, i); check_initializer(sub_initializer, element_type, context); } } else if (is_compound_type(type)) { size_t n_members = get_compound_n_members(type); if (n_entries > n_members) { report_error("too many values in compound initializer of %+F", context); fine = false; } for (size_t i = 0; i < n_entries; ++i) { if (i >= n_members) break; ir_entity *member = get_compound_member(type, i); ir_type *member_type = get_entity_type(member); const ir_initializer_t *sub_initializer = get_initializer_compound_value(initializer, i); check_initializer(sub_initializer, member_type, context); } } else { report_error("compound initiailizer for non-array/compound type in entity %+F", context); fine = false; } return fine; } } report_error("invalid initializer for entity %+F", context); return false; }