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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System;
using System.Diagnostics;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Runtime.Intrinsics;
using System.Runtime.Intrinsics.X86;
namespace JIT.HardwareIntrinsics.X86
{
public unsafe struct AlternatingBinaryOpTest__DataTable<TResult, TOp1, TOp2> : IDisposable
where TResult : struct
where TOp1 : struct
where TOp2 : struct
{
private byte[] inArray1;
private byte[] inArray2;
private byte[] outArray;
private GCHandle inHandle1;
private GCHandle inHandle2;
private GCHandle outHandle;
private byte simdSize;
public AlternatingBinaryOpTest__DataTable(TOp1[] inArray1, TOp2[] inArray2, TResult[] outArray, int simdSize)
{
this.inArray1 = new byte[simdSize * 2];
this.inArray2 = new byte[simdSize * 2];
this.outArray = new byte[simdSize * 2];
this.inHandle1 = GCHandle.Alloc(this.inArray1, GCHandleType.Pinned);
this.inHandle2 = GCHandle.Alloc(this.inArray2, GCHandleType.Pinned);
this.outHandle = GCHandle.Alloc(this.outArray, GCHandleType.Pinned);
this.simdSize = unchecked((byte)(simdSize));
Unsafe.CopyBlockUnaligned(ref Unsafe.AsRef<byte>(inArray1Ptr), ref Unsafe.As<TOp1, byte>(ref inArray1[0]), this.simdSize);
Unsafe.CopyBlockUnaligned(ref Unsafe.AsRef<byte>(inArray2Ptr), ref Unsafe.As<TOp2, byte>(ref inArray2[0]), this.simdSize);
}
public void* inArray1Ptr => Align((byte*)(inHandle1.AddrOfPinnedObject().ToPointer()), simdSize);
public void* inArray2Ptr => Align((byte*)(inHandle2.AddrOfPinnedObject().ToPointer()), simdSize);
public void* outArrayPtr => Align((byte*)(outHandle.AddrOfPinnedObject().ToPointer()), simdSize);
public void Dispose()
{
inHandle1.Free();
inHandle2.Free();
outHandle.Free();
}
private static unsafe void* Align(byte* buffer, byte expectedAlignment)
{
// Compute how bad the misalignment is, which is at most (expectedAlignment - 1).
// Then subtract that from the expectedAlignment and add it to the original address
// to compute the aligned address.
var misalignment = expectedAlignment - ((ulong)(buffer) % expectedAlignment);
var result = (void*)(buffer + misalignment);
Debug.Assert(((ulong)(result) % expectedAlignment) == 0);
Debug.Assert((ulong)(result) <= ((ulong)(result) + expectedAlignment));
return result;
}
}
}
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