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Double IndexOf throughput for chars (dotnet#78861)
* Add PackedIndexOf for chars * Add Contains and IndexOfValue(3 chars) * Stop using PackedIndexOf on ARM * Improve code comment
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49 changes: 49 additions & 0 deletions
49
src/libraries/System.Private.CoreLib/src/System/IndexOfAnyValues/IndexOfAny1CharValue.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| // Licensed to the .NET Foundation under one or more agreements. | ||
| // The .NET Foundation licenses this file to you under the MIT license. | ||
|
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| using System.Runtime.CompilerServices; | ||
| using System.Runtime.InteropServices; | ||
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| namespace System.Buffers | ||
| { | ||
| internal sealed class IndexOfAny1CharValue<TShouldUsePacked> : IndexOfAnyValues<char> | ||
| where TShouldUsePacked : struct, IndexOfAnyValues.IRuntimeConst | ||
| { | ||
| private char _e0; | ||
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| public IndexOfAny1CharValue(char value) => | ||
| _e0 = value; | ||
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| internal override char[] GetValues() => new[] { _e0 }; | ||
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| [MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
| internal override bool ContainsCore(char value) => | ||
| value == _e0; | ||
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| [MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
| internal override int IndexOfAny(ReadOnlySpan<char> span) => | ||
| TShouldUsePacked.Value | ||
| ? PackedSpanHelpers.IndexOf(ref MemoryMarshal.GetReference(span), _e0, span.Length) | ||
| : SpanHelpers.NonPackedIndexOfValueType<short, SpanHelpers.DontNegate<short>>( | ||
| ref Unsafe.As<char, short>(ref MemoryMarshal.GetReference(span)), | ||
| Unsafe.As<char, short>(ref _e0), | ||
| span.Length); | ||
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| [MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
| internal override int IndexOfAnyExcept(ReadOnlySpan<char> span) => | ||
| TShouldUsePacked.Value | ||
| ? PackedSpanHelpers.IndexOfAnyExcept(ref MemoryMarshal.GetReference(span), _e0, span.Length) | ||
| : SpanHelpers.NonPackedIndexOfValueType<short, SpanHelpers.Negate<short>>( | ||
| ref Unsafe.As<char, short>(ref MemoryMarshal.GetReference(span)), | ||
| Unsafe.As<char, short>(ref _e0), | ||
| span.Length); | ||
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| [MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
| internal override int LastIndexOfAny(ReadOnlySpan<char> span) => | ||
| span.LastIndexOf(_e0); | ||
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| [MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
| internal override int LastIndexOfAnyExcept(ReadOnlySpan<char> span) => | ||
| span.LastIndexOfAnyExcept(_e0); | ||
| } | ||
| } |
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51 changes: 51 additions & 0 deletions
51
src/libraries/System.Private.CoreLib/src/System/IndexOfAnyValues/IndexOfAny2CharValues.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| // Licensed to the .NET Foundation under one or more agreements. | ||
| // The .NET Foundation licenses this file to you under the MIT license. | ||
|
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| using System.Runtime.CompilerServices; | ||
| using System.Runtime.InteropServices; | ||
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| namespace System.Buffers | ||
| { | ||
| internal sealed class IndexOfAny2CharValue<TShouldUsePacked> : IndexOfAnyValues<char> | ||
| where TShouldUsePacked : struct, IndexOfAnyValues.IRuntimeConst | ||
| { | ||
| private char _e0, _e1; | ||
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| public IndexOfAny2CharValue(char value0, char value1) => | ||
| (_e0, _e1) = (value0, value1); | ||
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| internal override char[] GetValues() => new[] { _e0, _e1 }; | ||
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| [MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
| internal override bool ContainsCore(char value) => | ||
| value == _e0 || value == _e1; | ||
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| [MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
| internal override int IndexOfAny(ReadOnlySpan<char> span) => | ||
| TShouldUsePacked.Value | ||
| ? PackedSpanHelpers.IndexOfAny(ref MemoryMarshal.GetReference(span), _e0, _e1, span.Length) | ||
| : SpanHelpers.NonPackedIndexOfAnyValueType<short, SpanHelpers.DontNegate<short>>( | ||
| ref Unsafe.As<char, short>(ref MemoryMarshal.GetReference(span)), | ||
| Unsafe.As<char, short>(ref _e0), | ||
| Unsafe.As<char, short>(ref _e1), | ||
| span.Length); | ||
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| [MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
| internal override int IndexOfAnyExcept(ReadOnlySpan<char> span) => | ||
| TShouldUsePacked.Value | ||
| ? PackedSpanHelpers.IndexOfAnyExcept(ref MemoryMarshal.GetReference(span), _e0, _e1, span.Length) | ||
| : SpanHelpers.NonPackedIndexOfAnyValueType<short, SpanHelpers.Negate<short>>( | ||
| ref Unsafe.As<char, short>(ref MemoryMarshal.GetReference(span)), | ||
| Unsafe.As<char, short>(ref _e0), | ||
| Unsafe.As<char, short>(ref _e1), | ||
| span.Length); | ||
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| [MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
| internal override int LastIndexOfAny(ReadOnlySpan<char> span) => | ||
| span.LastIndexOfAny(_e0, _e1); | ||
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| [MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
| internal override int LastIndexOfAnyExcept(ReadOnlySpan<char> span) => | ||
| span.LastIndexOfAnyExcept(_e0, _e1); | ||
| } | ||
| } |
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53 changes: 53 additions & 0 deletions
53
src/libraries/System.Private.CoreLib/src/System/IndexOfAnyValues/IndexOfAny3CharValues.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| // Licensed to the .NET Foundation under one or more agreements. | ||
| // The .NET Foundation licenses this file to you under the MIT license. | ||
|
|
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| using System.Runtime.CompilerServices; | ||
| using System.Runtime.InteropServices; | ||
|
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| namespace System.Buffers | ||
| { | ||
| internal sealed class IndexOfAny3CharValue<TShouldUsePacked> : IndexOfAnyValues<char> | ||
| where TShouldUsePacked : struct, IndexOfAnyValues.IRuntimeConst | ||
| { | ||
| private char _e0, _e1, _e2; | ||
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| public IndexOfAny3CharValue(char value0, char value1, char value2) => | ||
| (_e0, _e1, _e2) = (value0, value1, value2); | ||
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| internal override char[] GetValues() => new[] { _e0, _e1, _e2 }; | ||
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| [MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
| internal override bool ContainsCore(char value) => | ||
| value == _e0 || value == _e1 || value == _e2; | ||
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| [MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
| internal override int IndexOfAny(ReadOnlySpan<char> span) => | ||
| TShouldUsePacked.Value | ||
| ? PackedSpanHelpers.IndexOfAny(ref MemoryMarshal.GetReference(span), _e0, _e1, _e2, span.Length) | ||
| : SpanHelpers.NonPackedIndexOfAnyValueType<short, SpanHelpers.DontNegate<short>>( | ||
| ref Unsafe.As<char, short>(ref MemoryMarshal.GetReference(span)), | ||
| Unsafe.As<char, short>(ref _e0), | ||
| Unsafe.As<char, short>(ref _e1), | ||
| Unsafe.As<char, short>(ref _e2), | ||
| span.Length); | ||
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| [MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
| internal override int IndexOfAnyExcept(ReadOnlySpan<char> span) => | ||
| TShouldUsePacked.Value | ||
| ? PackedSpanHelpers.IndexOfAnyExcept(ref MemoryMarshal.GetReference(span), _e0, _e1, _e2, span.Length) | ||
| : SpanHelpers.NonPackedIndexOfAnyValueType<short, SpanHelpers.Negate<short>>( | ||
| ref Unsafe.As<char, short>(ref MemoryMarshal.GetReference(span)), | ||
| Unsafe.As<char, short>(ref _e0), | ||
| Unsafe.As<char, short>(ref _e1), | ||
| Unsafe.As<char, short>(ref _e2), | ||
| span.Length); | ||
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| [MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
| internal override int LastIndexOfAny(ReadOnlySpan<char> span) => | ||
| span.LastIndexOfAny(_e0, _e1, _e2); | ||
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| [MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
| internal override int LastIndexOfAnyExcept(ReadOnlySpan<char> span) => | ||
| span.LastIndexOfAnyExcept(_e0, _e1, _e2); | ||
| } | ||
| } |
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