EgorBot for EgorBo in #112046

[EgorBot]

Processing dotnet/runtime#112046 (comment) command:

Command

-amd -arm -profiler --envvars JitDisasm:InversionMutation

using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Jobs;
using BenchmarkDotNet.Running;

public class Benchmarks
{
    private const int Seed = 100;

    private static readonly int[] Chromosome = new int[59];
    private static readonly Random Random = new(Seed);

    public Benchmarks()
    {
        var genes = Enumerable.Range(1, 59).ToArray();
        Random.Shuffle(genes);
        genes.CopyTo(Chromosome.AsSpan());
    }

    [Benchmark]
    public int[] InversionMutation()
    {
        var idx1 = 0;
        var idx2 = 0;

        var chromosomeLength = Chromosome.Length;

        while (idx1 == idx2)
        {
            idx1 = Random.Next(chromosomeLength);
            idx2 = Random.Next(chromosomeLength);
        }

        if (idx1 > idx2)
        {
            (idx1, idx2) = (idx2, idx1);
        }

        Array.Reverse(Chromosome, idx1, idx2 - idx1 + 1);

        return Chromosome;
    }
}

(EgorBot will reply in this issue)

[EgorBot]

Benchmark results on linux_azure_genoa

BenchmarkDotNet v0.14.0, Ubuntu 24.04.1 LTS (Noble Numbat)
AMD EPYC 9V74, 1 CPU, 16 logical and 8 physical cores
  Job-LPGFLA : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
  Job-JTDWBX : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
EnvironmentVariables=JitDisasm=InversionMutation

Method	Toolchain	Mean	Error	Ratio
InversionMutation	Main	37.81 ns	0.082 ns	1.00
InversionMutation	PR	34.57 ns	0.071 ns	0.91

BDN_Artifacts.zip

Profiling for Benchmarks_InversionMutation:

SVG flamegraph: Main vs PR 🔥
Speedscope flamegraph: Main vs PR
Hot asm code: Main vs PR
HW counters: Main vs PR

cc @EgorBo (agent_logs.txt). EgorBot manual: link.