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Use BitOperations methods and delete now unused BitUtils methods (#3134)

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Replaces BitUtils.CountTrailingZeros/CountLeadingZeros/IsPowerOfTwo with BitOperations methods
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Berkan Diler 2022-02-18 02:35:23 +01:00 committed by GitHub
parent 63c9c64196
commit 98c838b24c
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GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 19 additions and 68 deletions
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58
Ryujinx.Common/Utilities/BitUtils.cs
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@ -1,11 +1,10 @@
using System;
using System.Numerics;
namespace Ryujinx.Common
{
public static class BitUtils
{
private static ReadOnlySpan<byte> ClzNibbleTbl => new byte[] { 4, 3, 2, 2, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0 };
public static uint AlignUp(uint value, int size)
{
return (uint)AlignUp((int)value, size);
@ -76,60 +75,7 @@ namespace Ryujinx.Common
public static int Pow2RoundDown(int value)
{
return IsPowerOfTwo32(value) ? value : Pow2RoundUp(value) >> 1;
}
public static bool IsPowerOfTwo32(int value)
{
return value != 0 && (value & (value - 1)) == 0;
}
public static bool IsPowerOfTwo64(long value)
{
return value != 0 && (value & (value - 1)) == 0;
}
public static int CountLeadingZeros32(int value)
{
return (int)CountLeadingZeros((ulong)value, 32);
}
public static int CountLeadingZeros64(long value)
{
return (int)CountLeadingZeros((ulong)value, 64);
}
private static ulong CountLeadingZeros(ulong value, int size)
{
if (value == 0ul)
{
return (ulong)size;
}
int nibbleIdx = size;
int preCount, count = 0;
do
{
nibbleIdx -= 4;
preCount = ClzNibbleTbl[(int)(value >> nibbleIdx) & 0b1111];
count += preCount;
}
while (preCount == 4);
return (ulong)count;
}
public static int CountTrailingZeros32(int value)
{
int count = 0;
while (((value >> count) & 1) == 0)
{
count++;
}
return count;
return BitOperations.IsPow2(value) ? value : Pow2RoundUp(value) >> 1;
}
public static long ReverseBits64(long value)

9
Ryujinx.Graphics.Texture/BlockLinearLayout.cs
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@ -1,4 +1,5 @@
using Ryujinx.Common;
using System.Numerics;
using System.Runtime.CompilerServices;
using static Ryujinx.Graphics.Texture.BlockLinearConstants;
@ -47,15 +48,15 @@ namespace Ryujinx.Graphics.Texture
{
_texBpp = bpp;
_bppShift = BitUtils.CountTrailingZeros32(bpp);
_bppShift = BitOperations.TrailingZeroCount(bpp);
_bhMask = gobBlocksInY - 1;
_bdMask = gobBlocksInZ - 1;
_bhShift = BitUtils.CountTrailingZeros32(gobBlocksInY);
_bdShift = BitUtils.CountTrailingZeros32(gobBlocksInZ);
_bhShift = BitOperations.TrailingZeroCount(gobBlocksInY);
_bdShift = BitOperations.TrailingZeroCount(gobBlocksInZ);
_xShift = BitUtils.CountTrailingZeros32(GobSize * gobBlocksInY * gobBlocksInZ);
_xShift = BitOperations.TrailingZeroCount(GobSize * gobBlocksInY * gobBlocksInZ);
RobAndSliceSizes rsSizes = GetRobAndSliceSizes(width, height, gobBlocksInY, gobBlocksInZ);

5
Ryujinx.HLE/HOS/Kernel/Common/MersenneTwister.cs
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@ -1,4 +1,5 @@
using Ryujinx.Common;
using System.Numerics;
namespace Ryujinx.HLE.HOS.Kernel.Common
{
@ -41,10 +42,10 @@ namespace Ryujinx.HLE.HOS.Kernel.Common
range++;
// This is log2(Range) plus one.
int nextRangeLog2 = 64 - BitUtils.CountLeadingZeros64(range);
int nextRangeLog2 = 64 - BitOperations.LeadingZeroCount((ulong)range);
// If Range is already power of 2, subtract one to use log2(Range) directly.
int rangeLog2 = nextRangeLog2 - (BitUtils.IsPowerOfTwo64(range) ? 1 : 0);
int rangeLog2 = nextRangeLog2 - (BitOperations.IsPow2(range) ? 1 : 0);
int parts = rangeLog2 > 32 ? 2 : 1;
int bitsPerPart = rangeLog2 / parts;

9
Ryujinx.HLE/HOS/Kernel/Memory/KMemoryRegionManager.cs
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@ -1,6 +1,7 @@
using Ryujinx.Common;
using Ryujinx.HLE.HOS.Kernel.Common;
using System.Diagnostics;
using System.Numerics;
namespace Ryujinx.HLE.HOS.Kernel.Memory
{
@ -259,11 +260,11 @@ namespace Ryujinx.HLE.HOS.Kernel.Memory
if (backwards)
{
index = (index * 64 + 63) - BitUtils.CountLeadingZeros64(mask);
index = (index * 64 + 63) - BitOperations.LeadingZeroCount((ulong)mask);
}
else
{
index = index * 64 + BitUtils.CountLeadingZeros64(BitUtils.ReverseBits64(mask));
index = index * 64 + BitOperations.LeadingZeroCount((ulong)BitUtils.ReverseBits64(mask));
}
}
@ -312,11 +313,11 @@ namespace Ryujinx.HLE.HOS.Kernel.Memory
if (backwards)
{
index = index * 64 + BitUtils.CountLeadingZeros64(BitUtils.ReverseBits64(mask));
index = index * 64 + BitOperations.LeadingZeroCount((ulong)BitUtils.ReverseBits64(mask));
}
else
{
index = (index * 64 + 63) - BitUtils.CountLeadingZeros64(mask);
index = (index * 64 + 63) - BitOperations.LeadingZeroCount((ulong)mask);
}
}

3
Ryujinx.HLE/HOS/Kernel/Process/KContextIdManager.cs
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@ -1,5 +1,6 @@
using Ryujinx.Common;
using System;
using System.Numerics;
namespace Ryujinx.HLE.HOS.Kernel.Process
{
@ -32,7 +33,7 @@ namespace Ryujinx.HLE.HOS.Kernel.Process
{
int mask = _idMasks[index];
int firstFreeBit = BitUtils.CountLeadingZeros32((mask + 1) & ~mask);
int firstFreeBit = BitOperations.LeadingZeroCount((uint)((mask + 1) & ~mask));
if (firstFreeBit < 32)
{

3
Ryujinx.HLE/HOS/Kernel/Process/KProcessCapabilities.cs
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@ -3,6 +3,7 @@ using Ryujinx.HLE.HOS.Kernel.Common;
using Ryujinx.HLE.HOS.Kernel.Memory;
using Ryujinx.HLE.HOS.Kernel.Threading;
using System;
using System.Numerics;
namespace Ryujinx.HLE.HOS.Kernel.Process
{
@ -130,7 +131,7 @@ namespace Ryujinx.HLE.HOS.Kernel.Process
return KernelResult.Success;
}
int codeMask = 1 << (32 - BitUtils.CountLeadingZeros32(code + 1));
int codeMask = 1 << (32 - BitOperations.LeadingZeroCount((uint)code + 1));
// Check if the property was already set.
if (((mask0 & codeMask) & 0x1e008) != 0)