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[Arm64/Unix] Use native memcpy/memmove for ARM64 as glibc 2.36 added optimizations #93579

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[Arm64/Unix] Use native memcpy/memmove for ARM64 as glibc 2.36 added optimizations #93579

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6 changes: 2 additions & 4 deletions src/libraries/System.Private.CoreLib/src/System/Buffer.Unix.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -5,12 +5,10 @@ namespace System
{
public static partial class Buffer
{
#if TARGET_ARM64 || TARGET_LOONGARCH64
#if TARGET_LOONGARCH64
// Managed code is currently faster than glibc unoptimized memmove
// TODO-ARM64-UNIX-OPT revisit when glibc optimized memmove is in Linux distros
// https://github.com/dotnet/runtime/issues/8897
private static nuint MemmoveNativeThreshold => nuint.MaxValue;
#elif TARGET_ARM
#elif TARGET_ARM || TARGET_ARM64
private const nuint MemmoveNativeThreshold = 512;
#else
private const nuint MemmoveNativeThreshold = 2048;
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