bit faster 6 nibble lenght paths

NethermindEth · Aug 22, 2024 · f3b16f8 · f3b16f8
1 parent 192f7b0
commit f3b16f8
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/src/Paprika/Data/SlottedArray.cs b/src/Paprika/Data/SlottedArray.cs
@@ -485,7 +485,7 @@ public static bool TryReadFrom(scoped in Span<byte> actual, in NibblePath key, o
 
                 if (key.Length == PathLengthOf2 &&
                     (first & DoubleEvenNibbleCaseByteMask) == DoubleEvenNibbleCaseByteMaskValue &&
-                    first == (key.FirstNibble << NibblePath.NibbleShift) + key.GetAt(1))
+                    first == key.UnsafeSpan)
                 {
                     leftover = actual[DoubleEvenNibbleCaseByteCount..];
                     return true;
@@ -552,9 +552,9 @@ public static Span<byte> Write(in NibblePath key, in Span<byte> destination)
                 return destination[SingleNibbleLength..];
             }
 
-            if (key.Length == PathLengthOf2 && (key.FirstNibble & DoubleEvenNibbleCaseFirstNibbleMask) == DoubleEvenNibbleCaseFirstNibbleMaskValue)
+            if (key.Length == PathLengthOf2 && (key.UnsafeSpan & DoubleEvenNibbleCaseByteMask) == DoubleEvenNibbleCaseByteMaskValue)
             {
-                destination[0] = (byte)((key.FirstNibble << NibblePath.NibbleShift) + key.GetAt(1));
+                destination[0] = key.UnsafeSpan;
                 return destination[DoubleEvenNibbleCaseByteCount..];
             }