{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"//"}]}
        // This check is somewhat expensive, so only run it when -Zvalidate-mir is passed.
    fn visit_operand(&mut self, operand: &Operand<'tcx>, location: Location) {
        if self.tcx.sess.opts.unstable_opts.validate_mir