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;
}