{"ast_node_type":"import","tokens":[{"end":83,"kind":"keyword","start":0,"text":"///"}]}
    /// `repr(simd)` types need special handling because they each have a non-empty
    Pair(Either<V, abi::Scalar>, Either<V, abi::Scalar>),
    /// array field (which uses [`OperandValue::Ref`]) despite the SIMD type itself