{"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"BackendRepr::ScalarPair(a,"}]}
            BackendRepr::ScalarPair(a, b) => {
        PassMode::Pair(_, _) => match arg_abi.layout.backend_repr {
                signature.push_str(wasm_primitive(a.primitive(), ptr_type));