{"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"(AArch64(AArch64InlineAsmRegClass::vreg),"}]}
        (AArch64(AArch64InlineAsmRegClass::vreg), BackendRepr::Scalar(s)) => {
    match (reg, layout.backend_repr) {
            if let Primitive::Int(Integer::I8, _) = s.primitive() {