1 files changed, 89 insertions, 0 deletions
diff --git a/third_party/rust/packed_simd/src/api/reductions/mask.rs b/third_party/rust/packed_simd/src/api/reductions/mask.rs
new file mode 100644
index 0000000000..0dd6a84e7e
--- /dev/null
+++ b/third_party/rust/packed_simd/src/api/reductions/mask.rs
@@ -0,0 +1,89 @@
+//! Implements portable horizontal mask reductions.
+
+macro_rules! impl_reduction_mask {
+    ([$elem_ty:ident; $elem_count:expr]: $id:ident | $test_tt:tt) => {
+        impl $id {
+            /// Are `all` vector lanes `true`?
+            #[inline]
+            pub fn all(self) -> bool {
+                unsafe { crate::codegen::reductions::mask::All::all(self) }
+            }
+            /// Is `any` vector lane `true`?
+            #[inline]
+            pub fn any(self) -> bool {
+                unsafe { crate::codegen::reductions::mask::Any::any(self) }
+            }
+            /// Are `all` vector lanes `false`?
+            #[inline]
+            pub fn none(self) -> bool {
+                !self.any()
+            }
+        }
+
+        test_if! {
+            $test_tt:
+            paste::item! {
+                pub mod [<$id _reduction>] {
+                    use super::*;
+                    #[cfg_attr(not(target_arch = "wasm32"), test)]
+                    #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
+                    fn all() {
+                        let a = $id::splat(true);
+                        assert!(a.all());
+                        let a = $id::splat(false);
+                        assert!(!a.all());
+
+                        if $id::lanes() > 1 {
+                            for i in 0..$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());
+                            }
+                        }
+                    }
+                    #[cfg_attr(not(target_arch = "wasm32"), test)]
+                    #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
+                    fn any() {
+                        let a = $id::splat(true);
+                        assert!(a.any());
+                        let a = $id::splat(false);
+                        assert!(!a.any());
+
+                        if $id::lanes() > 1 {
+                            for i in 0..$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());
+                            }
+                        }
+                    }
+                    #[cfg_attr(not(target_arch = "wasm32"), test)]
+                    #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
+                    fn none() {
+                        let a = $id::splat(true);
+                        assert!(!a.none());
+                        let a = $id::splat(false);
+                        assert!(a.none());
+
+                        if $id::lanes() > 1 {
+                            for i in 0..$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());
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    };
+}