Use Unsafe.ReadUnaligned for the software fallback of Vector256.AsVec…

…tor()
dotnet · Sep 28, 2022 · ebaf95a · ebaf95a
1 parent 4146f92
commit ebaf95a
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/libraries/System.Private.CoreLib/src/System/Runtime/Intrinsics/Vector256.cs b/src/libraries/System.Private.CoreLib/src/System/Runtime/Intrinsics/Vector256.cs
@@ -271,7 +271,9 @@ public static Vector<T> AsVector<T>(this Vector256<T> value)
         {
             Debug.Assert(Vector256<T>.Count >= Vector<T>.Count);
             ThrowHelper.ThrowForUnsupportedIntrinsicsVector256BaseType<T>();
-            return Unsafe.As<Vector256<T>, Vector<T>>(ref value);
+
+            ref byte address = ref Unsafe.As<Vector256<T>, byte>(ref value);
+            return Unsafe.ReadUnaligned<Vector<T>>(ref address);
         }
 
         /// <summary>Computes the bitwise-and of two vectors.</summary>