{"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"assert_eq!(result.layout,"}]}
                assert_eq!(result.layout, dest.layout, "layout mismatch for result of {un_op:?}");
                let result = self.unary_op(un_op, &val)?;
                self.write_immediate(*result, &dest)?;