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Merge 1b5cf3b84d into 123627ba0f

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xtqqczze 2025-07-30 08:53:51 -04:00 committed by GitHub
parent 123627ba0f 1b5cf3b84d
commit ca28e5bad9
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1 changed files with 18 additions and 6 deletions
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24
src/libraries/System.Private.CoreLib/src/System/SearchValues/Strings/Helpers/TeddyHelper.cs
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@ -207,8 +207,12 @@ namespace System.Buffers
return (result, match0, match1);
}
// Read two Vector512<ushort> and concatenate their lower bytes together into a single Vector512<byte>.
// On X86, characters above 32767 are turned into 0, but we account for that by not using Teddy if any of the string values contain a 0.
/// <summary>
/// Read two <see cref="Vector128&lt;UInt16&gt;" /> and concatenate their lower bytes together into a single <see cref="Vector128&lt;Byte&gt;" />.
/// </summary>
/// <remarks>
/// On X86, characters above 32767 are turned into 0, but we account for that by not using Teddy if any of the string values contain a 0.
/// </remarks>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[CompExactlyDependsOn(typeof(Sse2))]
[CompExactlyDependsOn(typeof(AdvSimd))]
@ -233,8 +237,12 @@ namespace System.Buffers
}
}
// Read two Vector512<ushort> and concatenate their lower bytes together into a single Vector512<byte>.
// Characters above 32767 are turned into 0, but we account for that by not using Teddy if any of the string values contain a 0.
/// <summary>
/// Read two <see cref="Vector256&lt;UInt16&gt;" /> and concatenate their lower bytes together into a single <see cref="Vector256&lt;Byte&gt;" />.
/// </summary>
/// <remarks>
/// On X86, characters above 32767 are turned into 0, but we account for that by not using Teddy if any of the string values contain a 0.
/// </remarks>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[CompExactlyDependsOn(typeof(Avx2))]
public static Vector256<byte> LoadAndPack32AsciiChars(ref char source)
@ -247,8 +255,12 @@ namespace System.Buffers
return PackedSpanHelpers.FixUpPackedVector256Result(packed);
}
// Read two Vector512<ushort> and concatenate their lower bytes together into a single Vector512<byte>.
// Characters above 32767 are turned into 0, but we account for that by not using Teddy if any of the string values contain a 0.
/// <summary>
/// Read two <see cref="Vector512&lt;UInt16&gt;" /> and concatenate their lower bytes together into a single <see cref="Vector512&lt;Byte&gt;" />.
/// </summary>
/// <remarks>
/// On X86, characters above 32767 are turned into 0, but we account for that by not using Teddy if any of the string values contain a 0.
/// </remarks>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[CompExactlyDependsOn(typeof(Avx512BW))]
public static Vector512<byte> LoadAndPack64AsciiChars(ref char source)