let a_scalar = match layout.abi {
layout::Abi::ScalarPair(ref a, _) => a,
_ => bug!("from_const: invalid ScalarPair layout: {:#?}", layout)
};
let a_scalar = match layout.abi {
layout::Abi::ScalarPair(ref a, _) => a,
_ => bug!("from_const: invalid ScalarPair layout: {:#?}", layout)
};