Function rustc_mir_build::thir::pattern::compare_const_vals

pub(crate) fn compare_const_vals<'tcx>(
    tcx: TyCtxt<'tcx>,
    a: ConstantKind<'tcx>,
    b: ConstantKind<'tcx>,
    param_env: ParamEnv<'tcx>
) -> Option<Ordering>