{"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"sess.time(\"llvm_dump_timing_file\","}]}
            sess.time("llvm_dump_timing_file", || {
        if sess.opts.unstable_opts.llvm_time_trace {
                let file_name = outputs.with_extension("llvm_timings.json");