// Make a new variable declaration.
Variable_decl*
make_variable_decl(Location loc, String const* n, Type const* t, Expr const* e)
{
Input_context cxt(loc);
if (!check_initializer(t, e))
return make_error_node<Variable_decl>();
return new Variable_decl(loc, n, t, e);
}
int check_entity(const ir_entity *entity)
{
bool fine = true;
ir_linkage linkage = get_entity_linkage(entity);
if (linkage & IR_LINKAGE_NO_CODEGEN) {
if (!is_method_entity(entity)) {
report_error("entity %+F has IR_LINKAGE_NO_CODEGEN but is not a function", entity);
fine = false;
} else if (get_entity_irg(entity) == NULL) {
report_error("entity %+F has IR_LINKAGE_NO_CODEGEN but has no ir-graph anyway", entity);
fine = false;
}
if (!is_externally_visible(entity)) {
report_error("entity %+F has IR_LINKAGE_NO_CODEGEN but is not externally visible", entity);
fine = false;
}
}
check_external_linkage(entity, IR_LINKAGE_WEAK, "WEAK");
check_external_linkage(entity, IR_LINKAGE_GARBAGE_COLLECT,
"GARBAGE_COLLECT");
check_external_linkage(entity, IR_LINKAGE_MERGE, "MERGE");
ir_type const *const type = get_entity_type(entity);
ir_type const *const owner = get_entity_owner(entity);
switch (get_entity_kind(entity)) {
case IR_ENTITY_ALIAS:
if (!is_segment_type(owner)) {
report_error("alias entity %+F has non-segment owner %+F", entity,
owner);
fine = false;
}
break;
case IR_ENTITY_NORMAL: {
ir_initializer_t const *const init = get_entity_initializer(entity);
if (init)
fine &= check_initializer(init, type, entity);
if (!is_data_type(type)) {
report_error("normal entity %+F has non-data type %+F", entity,
type);
fine = false;
}
break;
}
case IR_ENTITY_COMPOUND_MEMBER:
if (!is_compound_type(owner)) {
report_error("compound member entity %+F has non-compound owner %+F",
entity, owner);
fine = false;
}
break;
case IR_ENTITY_LABEL:
if (type != get_code_type()) {
report_error("label entity %+F has non-code type %+F", entity,
type);
fine = false;
}
break;
case IR_ENTITY_METHOD:
if (!is_Method_type(type)) {
report_error("method entity %+F has non-method type %+F", entity,
type);
fine = false;
}
ir_graph *irg = get_entity_irg(entity);
if (irg != NULL) {
ir_entity *irg_entity = get_irg_entity(irg);
if (irg_entity != entity) {
report_error("entity(%+F)->irg->entity(%+F) relation invalid",
entity, irg_entity);
fine = false;
}
}
break;
case IR_ENTITY_PARAMETER:
if (!is_frame_type(owner)) {
report_error("parameter entity %+F has non-frame owner %+F",
entity, owner);
fine = false;
}
if (!is_data_type(type)) {
report_error("parameter entity %+F has non-data type %+F", entity,
type);
fine = false;
}
break;
case IR_ENTITY_UNKNOWN:
break;
case IR_ENTITY_SPILLSLOT:
if (is_frame_type(owner)) {
report_error("spillslot %+F must be on frame type", entity);
fine = false;
}
break;
}
if (is_frame_type(owner) && entity_has_definition(entity)) {
report_error("entity %+F on frame %+F has initialized", entity, owner);
fine = false;
}
return fine;
}
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;
}