1 files changed, 124 insertions, 0 deletions
diff --git a/library/portable-simd/crates/core_simd/src/ops/deref.rs b/library/portable-simd/crates/core_simd/src/ops/deref.rs
new file mode 100644
index 000000000..9883a74c9
--- /dev/null
+++ b/library/portable-simd/crates/core_simd/src/ops/deref.rs
@@ -0,0 +1,124 @@
+//! This module hacks in "implicit deref" for Simd's operators.
+//! Ideally, Rust would take care of this itself,
+//! and method calls usually handle the LHS implicitly.
+//! But this is not the case with arithmetic ops.
+use super::*;
+
+macro_rules! deref_lhs {
+    (impl<T, const LANES: usize> $trait:ident for $simd:ty {
+            fn $call:ident
+        }) => {
+        impl<T, const LANES: usize> $trait<$simd> for &$simd
+        where
+            T: SimdElement,
+            $simd: $trait<$simd, Output = $simd>,
+            LaneCount<LANES>: SupportedLaneCount,
+        {
+            type Output = Simd<T, LANES>;
+
+            #[inline]
+            #[must_use = "operator returns a new vector without mutating the inputs"]
+            fn $call(self, rhs: $simd) -> Self::Output {
+                (*self).$call(rhs)
+            }
+        }
+    };
+}
+
+macro_rules! deref_rhs {
+    (impl<T, const LANES: usize> $trait:ident for $simd:ty {
+            fn $call:ident
+        }) => {
+        impl<T, const LANES: usize> $trait<&$simd> for $simd
+        where
+            T: SimdElement,
+            $simd: $trait<$simd, Output = $simd>,
+            LaneCount<LANES>: SupportedLaneCount,
+        {
+            type Output = Simd<T, LANES>;
+
+            #[inline]
+            #[must_use = "operator returns a new vector without mutating the inputs"]
+            fn $call(self, rhs: &$simd) -> Self::Output {
+                self.$call(*rhs)
+            }
+        }
+    };
+}
+
+macro_rules! deref_ops {
+    ($(impl<T, const LANES: usize> $trait:ident for $simd:ty {
+            fn $call:ident
+        })*) => {
+        $(
+            deref_rhs! {
+                impl<T, const LANES: usize> $trait for $simd {
+                    fn $call
+                }
+            }
+            deref_lhs! {
+                impl<T, const LANES: usize> $trait for $simd {
+                    fn $call
+                }
+            }
+            impl<'lhs, 'rhs, T, const LANES: usize> $trait<&'rhs $simd> for &'lhs $simd
+            where
+                T: SimdElement,
+                $simd: $trait<$simd, Output = $simd>,
+                LaneCount<LANES>: SupportedLaneCount,
+            {
+                type Output = $simd;
+
+                #[inline]
+                #[must_use = "operator returns a new vector without mutating the inputs"]
+                fn $call(self, rhs: &$simd) -> Self::Output {
+                    (*self).$call(*rhs)
+                }
+            }
+        )*
+    }
+}
+
+deref_ops! {
+    // Arithmetic
+    impl<T, const LANES: usize> Add for Simd<T, LANES> {
+        fn add
+    }
+
+    impl<T, const LANES: usize> Mul for Simd<T, LANES> {
+        fn mul
+    }
+
+    impl<T, const LANES: usize> Sub for Simd<T, LANES> {
+        fn sub
+    }
+
+    impl<T, const LANES: usize> Div for Simd<T, LANES> {
+        fn div
+    }
+
+    impl<T, const LANES: usize> Rem for Simd<T, LANES> {
+        fn rem
+    }
+
+    // Bitops
+    impl<T, const LANES: usize> BitAnd for Simd<T, LANES> {
+        fn bitand
+    }
+
+    impl<T, const LANES: usize> BitOr for Simd<T, LANES> {
+        fn bitor
+    }
+
+    impl<T, const LANES: usize> BitXor for Simd<T, LANES> {
+        fn bitxor
+    }
+
+    impl<T, const LANES: usize> Shl for Simd<T, LANES> {
+        fn shl
+    }
+
+    impl<T, const LANES: usize> Shr for Simd<T, LANES> {
+        fn shr
+    }
+}