{"ast_node_type":"function","tokens":[{"end":61,"kind":"keyword","start":0,"text":"fn"}]}
    fn simplify_ref_deref(&self, rvalue: &mut Rvalue<'tcx>) {
    /// Transform `&(*a)` ==> `a`.
        if let Rvalue::Ref(_, _, place) | Rvalue::RawPtr(_, place) = rvalue