{"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"BackendRepr::ScalarPair(ref"}]}
            BackendRepr::ScalarPair(ref a, ref b) => (a, b),
        let (a, b) = match self.backend_repr {
            _ => bug!("TyAndLayout::scalar_pair_element_llty({:?}): not applicable", self),