{"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"AtomicRmwBinOp::AtomicXchg"}]}
            AtomicRmwBinOp::AtomicXchg => format!("__atomic_exchange_{}", size),
        let name = match op {
            AtomicRmwBinOp::AtomicAdd => format!("__atomic_fetch_add_{}", size),