From a8d3cebde8690896a1919df4fac585ad48360dd8 Mon Sep 17 00:00:00 2001 From: Ynse Hoornenborg Date: Mon, 6 Dec 2021 22:31:23 +0100 Subject: [PATCH] Remove dead code from IComponentShuffle --- .../Helpers/Shuffle/IComponentShuffle.cs | 37 ------------------- 1 file changed, 37 deletions(-) diff --git a/src/ImageSharp/Common/Helpers/Shuffle/IComponentShuffle.cs b/src/ImageSharp/Common/Helpers/Shuffle/IComponentShuffle.cs index 2fc2b44304..4c02deb2d3 100644 --- a/src/ImageSharp/Common/Helpers/Shuffle/IComponentShuffle.cs +++ b/src/ImageSharp/Common/Helpers/Shuffle/IComponentShuffle.cs @@ -227,41 +227,4 @@ namespace SixLabors.ImageSharp } } } - - internal readonly struct XZWYShuffle4 : IShuffle4 - { - public byte Control - { - [MethodImpl(InliningOptions.ShortMethod)] - get => SimdUtils.Shuffle.MmShuffle(1, 3, 2, 0); - } - - [MethodImpl(InliningOptions.ShortMethod)] - public void RunFallbackShuffle(ReadOnlySpan source, Span dest) - { - ref uint sBase = ref Unsafe.As(ref MemoryMarshal.GetReference(source)); - ref uint dBase = ref Unsafe.As(ref MemoryMarshal.GetReference(dest)); - int n = source.Length / 4; - - for (int i = 0; i < n; i++) - { - uint packed = Unsafe.Add(ref sBase, i); - - // packed = [W Z Y X] - // tmp1 = [0 0 0 X] - // tmp2 = [W Z 0 0] - // tmp3 = [0 0 Y 0] - // tmp4=ROTR(8, tmp2) = [0 W Z 0] - // tmp5=ROTL(16, tmp3) = [Y 0 0 0] - // tmp1+ tmp3 + tmp4 = [Y W Z X] - uint tmp1 = packed & 0x000000FF; - uint tmp2 = packed & 0xFFFF0000; - uint tmp3 = packed & 0x0000FF00; - uint tmp4 = tmp2 >> 8; - uint tmp5 = tmp3 << 16; - - Unsafe.Add(ref dBase, i) = tmp1 + tmp4 + tmp5; - } - } - } }