{"ast_node_type":"variable","tokens":[{"end":62,"kind":"keyword","start":0,"text":"let"}]}
        let filename = pre_lto_bitcode_filename(&module.name);
    let bitcode = if cgcx.config(module.kind).emit_pre_lto_bc {
        cgcx.incr_comp_session_dir.as_ref().map(|path| path.join(&filename))