APInt getSingleValue(unsigned idx) const {
APInt sz(((const APInt&)getItem(0).getLow()).getBitWidth(), 0);
for (unsigned i = 0, e = getNumItems(); i != e; ++i) {
APInt getSingleValue(unsigned idx) const {
APInt sz(((const APInt&)getItem(0).getLow()).getBitWidth(), 0);
for (unsigned i = 0, e = getNumItems(); i != e; ++i) {