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    //! Horizontal mask reductions.
    #![allow(unused)]

    macro_rules! impl_mask_reductions {
        ($id:ident) => {
            impl $id {
                /// Are `all` vector lanes `true`?
                #[cfg(not(target_arch = "aarch64"))]
                #[inline]
                pub fn all(self) -> bool {
                    use coresimd::simd_llvm::simd_reduce_all;
                    unsafe { simd_reduce_all(self) }
                }
                /// Are `all` vector lanes `true`?
                #[cfg(target_arch = "aarch64")]
                #[inline]
                pub fn all(self) -> bool {
                    // FIXME: Broken on AArch64
                    // https://bugs.llvm.org/show_bug.cgi?id=36796
                    self.and()
                }

                /// Is `any` vector lanes `true`?
                #[cfg(not(target_arch = "aarch64"))]
                #[inline]
                pub fn any(self) -> bool {
                    use coresimd::simd_llvm::simd_reduce_any;
                    unsafe { simd_reduce_any(self) }
                }
                /// Is `any` vector lanes `true`?
                #[cfg(target_arch = "aarch64")]
                #[inline]
                pub fn any(self) -> bool {
                    // FIXME: Broken on AArch64
                    // https://bugs.llvm.org/show_bug.cgi?id=36796
                    self.or()
                }

                /// Are `all` vector lanes `false`?
                #[inline]
                pub fn none(self) -> bool {
                    !self.any()
                }
            }
        };
    }

    #[cfg(test)]
    macro_rules! test_mask_reductions {
        ($id:ident) => {
            #[test]
            fn all() {
                use coresimd::simd::$id;

                let a = $id::splat(true);
                assert!(a.all());
                let a = $id::splat(false);
                assert!(!a.all());

                for i in 0..$id::lanes() {
                    let mut a = $id::splat(true);
                    a = a.replace(i, false);
                    assert!(!a.all());
                    let mut a = $id::splat(false);
                    a = a.replace(i, true);
                    assert!(!a.all());
                }
            }
            #[test]
            fn any() {
                use coresimd::simd::$id;

                let a = $id::splat(true);
                assert!(a.any());
                let a = $id::splat(false);
                assert!(!a.any());

                for i in 0..$id::lanes() {
                    let mut a = $id::splat(true);
                    a = a.replace(i, false);
                    assert!(a.any());
                    let mut a = $id::splat(false);
                    a = a.replace(i, true);
                    assert!(a.any());
                }
            }
            #[test]
            fn none() {
                use coresimd::simd::$id;

                let a = $id::splat(true);
                assert!(!a.none());
                let a = $id::splat(false);
                assert!(a.none());

                for i in 0..$id::lanes() {
                    let mut a = $id::splat(true);
                    a = a.replace(i, false);
                    assert!(!a.none());
                    let mut a = $id::splat(false);
                    a = a.replace(i, true);
                    assert!(!a.none());
                }
            }
        };
    }

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