{"ast_node_type":"other","tokens":[{"end":38,"kind":"keyword","start":0,"text":"//"}]}
    // Check if GCC requires the same.
    // TODO(antoyo): cg_llvm adds global features to each function so that LTO keep them.
    let mut global_features = cx.tcx.global_backend_features(()).iter().map(|s| s.as_str());