Don't use intrinsics if only one pair fits in the vector

NetFabric · Jan 2, 2024 · 33eefcc · 33eefcc
1 parent 59dfe7e
commit 33eefcc
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Showing 3 changed files with 5 additions and 0 deletions.
diff --git a/src/NetFabric.Numerics.Tensors/AggregatePairs.cs b/src/NetFabric.Numerics.Tensors/AggregatePairs.cs
@@ -29,6 +29,7 @@ public static ValueTuple<T, T> AggregatePairs<T, TOperator>(ReadOnlySpan<T> sour
 
             if (Vector.IsHardwareAccelerated &&
                 Vector<T>.IsSupported &&
+                Vector<T>.Count > 2 &&
                 Vector<T>.Count % 2 is 0 &&
                 source.Length >= Vector<T>.Count)
             {

diff --git a/src/NetFabric.Numerics.Tensors/ApplyBinary.cs b/src/NetFabric.Numerics.Tensors/ApplyBinary.cs
@@ -127,6 +127,7 @@ public static void Apply<T, TOperator>(ReadOnlySpan<T> x, ValueTuple<T, T> y, Sp
         if (useIntrinsics &&
             Vector.IsHardwareAccelerated &&
             Vector<T>.IsSupported &&
+            Vector<T>.Count > 2 &&
             Vector<T>.Count % 2 is 0 &&
             x.Length >= Vector<T>.Count)
         {

diff --git a/src/NetFabric.Numerics.Tensors/ApplyTernary.cs b/src/NetFabric.Numerics.Tensors/ApplyTernary.cs
@@ -147,6 +147,7 @@ public static void Apply<T, TOperator>(ReadOnlySpan<T> x, ValueTuple<T, T> y, Re
         if (useIntrinsics &&
             Vector.IsHardwareAccelerated &&
             Vector<T>.IsSupported &&
+            Vector<T>.Count > 2 &&
             Vector<T>.Count % 2 is 0 &&
             x.Length >= Vector<T>.Count)
         {
@@ -270,6 +271,7 @@ public static void Apply<T, TOperator>(ReadOnlySpan<T> x, ReadOnlySpan<T> y, Val
         if (useIntrinsics &&
             Vector.IsHardwareAccelerated &&
             Vector<T>.IsSupported &&
+            Vector<T>.Count > 2 &&
             Vector<T>.Count % 2 is 0 &&
             x.Length >= Vector<T>.Count)
         {
@@ -383,6 +385,7 @@ public static void Apply<T, TOperator>(ReadOnlySpan<T> x, ValueTuple<T, T> y, Va
         if (useIntrinsics &&
             Vector.IsHardwareAccelerated &&
             Vector<T>.IsSupported &&
+            Vector<T>.Count > 2 &&
             Vector<T>.Count % 2 is 0 &&
             x.Length >= Vector<T>.Count)
         {