5953309698

Committed 23 Aug 2023 03:23PM UTC coverage: 21.364% (-1.9%) from 23.214%

Build # 5953309698

Build Type

push

github

Committed by

neon-sunset

Commit Message

perf: implement SIMD rune counting, add 3rd party notice for simdutf

Run Details

133 of 874 branches covered (15.22%)

Branch coverage included in aggregate %.

53 of 53 new or added lines in 6 files covered. (100.0%)

481 of 2000 relevant lines covered (24.05%)

41214.18 hits per line

Source File
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42.86

/src/Extensions/VectorExtensions.cs

using System.Numerics;
using System.Runtime.Intrinsics;
using System.Runtime.Intrinsics.Arm;

namespace U8Primitives;

internal static class VectorExtensions
{
    [MethodImpl(MethodImplOptions.AggressiveInlining)]
    internal static int CountMatches<T>(this Vector256<T> mask)
    {
        if (Vector256.IsHardwareAccelerated)
        {
            return BitOperations.PopCount(mask.ExtractMostSignificantBits());
        }
        else
        {
            return CountMatches(mask.GetLower()) + CountMatches(mask.GetUpper());
        }
    }

    [MethodImpl(MethodImplOptions.AggressiveInlining)]
    internal static int CountMatches<T>(this Vector128<T> mask)
    {
        if (AdvSimd.Arm64.IsSupported)
        {
            var matches = AdvSimd
                .ShiftRightLogicalNarrowingLower(mask.AsUInt16(), 4)
                .AsUInt64()
                .ToScalar();
            return BitOperations.PopCount(matches) >> (int)((uint)BitOperations.PopCount(matches) / (4 * Unsafe.SizeOf<T>()));
        }
        else
        {
            return BitOperations.PopCount(mask.ExtractMostSignificantBits());
        }
    }
}

1	using System.Numerics;
2	using System.Runtime.Intrinsics;
3	using System.Runtime.Intrinsics.Arm;
4
5	namespace U8Primitives;
6
7	internal static class VectorExtensions
8	{
9	[MethodImpl(MethodImplOptions.AggressiveInlining)]
10	internal static int CountMatches<T>(this Vector256<T> mask)
11	{
12	if (Vector256.IsHardwareAccelerated)	141!
13	{
14	return BitOperations.PopCount(mask.ExtractMostSignificantBits());	141✔
15	}
16	else
17	{
18	return CountMatches(mask.GetLower()) + CountMatches(mask.GetUpper());	×
19	}
20	}
21
22	[MethodImpl(MethodImplOptions.AggressiveInlining)]
23	internal static int CountMatches<T>(this Vector128<T> mask)
24	{
25	if (AdvSimd.Arm64.IsSupported)	6!
26	{
27	var matches = AdvSimd	×
28	.ShiftRightLogicalNarrowingLower(mask.AsUInt16(), 4)	×
29	.AsUInt64()	×
30	.ToScalar();	×
31	return BitOperations.PopCount(matches) >> (int)((uint)BitOperations.PopCount(matches) / (4 * Unsafe.SizeOf<T>()));	×
32	}
33	else
34	{
35	return BitOperations.PopCount(mask.ExtractMostSignificantBits());	6✔
36	}
37	}
38	}

neon-sunset / U8String / 5953309698

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