{"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"sym::atomic_xchg"}]}
                    sym::atomic_xchg => AtomicRmwBinOp::AtomicXchg,
                let atom_op = match name {
                    sym::atomic_xadd => AtomicRmwBinOp::AtomicAdd,