{"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"autodiff:"}]}
            autodiff: if_regular!(sess.opts.unstable_opts.autodiff.clone(), vec![]),
            llvm_plugins: if_regular!(sess.opts.unstable_opts.llvm_plugins.clone(), vec![]),
            offload: if_regular!(sess.opts.unstable_opts.offload.clone(), vec![]),