Function clippy_utils::qualify_min_const_fn::check_rvalue

fn check_rvalue<'tcx>(
    tcx: TyCtxt<'tcx>,
    body: &Body<'tcx>,
    def_id: DefId,
    rvalue: &Rvalue<'tcx>,
    span: Span
) -> Result<(), (Span, Cow<'static, str>)>