{"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"if"}]}
            if !util::sub_types(tcx, inliner.typing_env(), input_type, arg_ty) {
            let arg_ty = arg.node.ty(&caller_body.local_decls, tcx);
                trace!(?arg_ty, ?input_type);