{"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"//"}]}
        // less `O(n)` if we place a constant limit on the number of tracked places.
        // map nodes is strongly correlated to the number of tracked places, this becomes more or
        let place_limit = if tcx.sess.mir_opt_level() < 4 { Some(PLACE_LIMIT) } else { None };