{"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"(Immediate::ScalarPair(a_val,"}]}
            (Immediate::ScalarPair(a_val, b_val), BackendRepr::ScalarPair(a, b)) => {
            // extract fields from types with `ScalarPair` ABI
                Immediate::from(if offset.bytes() == 0 {