EgorBot for AndyAyersMS in #109209

[EgorBot]

Processing dotnet/runtime#109209 (comment) command:

Command

-intel -arm64 -profiler --envvars DOTNET_JitDisasm:Foreach Count

using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;
using System.Runtime.CompilerServices;

BenchmarkSwitcher.FromAssembly(typeof(Bench).Assembly).Run(args);

public class Bench
{
    string[] s_ro_str_array = new string[512];

    [Benchmark]
    public int Foreach()
    {
        IEnumerable<string> e = s_ro_str_array;
        int sum = 0;
        foreach (string s in e) sum += s == null ? 0 : s.Length;
        return sum;
    }

    [Benchmark]
    public int Count() => CountInner(s_ro_str_array);

    [MethodImpl(MethodImplOptions.NoInlining)]
    int CountInner(ICollection<string> c) => c.Count;
}

(EgorBot will reply in this issue)

[EgorBot]

Benchmark results on Arm64

BDN_Artifacts.zip

Profile for Bench_Foreach:

Flame graphs: Main vs PR 🔥
Speedscope: Main vs PR
Hot asm: Main vs PR
Hot functions: Main vs PR
Counters: Main vs PR

Profile for Bench_Count:

Flame graphs: Main vs PR 🔥
Speedscope: Main vs PR
Hot asm: Main vs PR
Hot functions: Main vs PR
Counters: Main vs PR

[EgorBot]

cc @AndyAyersMS (logs)

[EgorBot]

Benchmark results on Intel

BDN_Artifacts.zip

Profile for Bench_Foreach:

Flame graphs: Main vs PR 🔥
Speedscope: Main vs PR
Hot asm: Main vs PR
Hot functions: Main vs PR
Counters: Main vs PR

Profile for Bench_Count:

Flame graphs: Main vs PR 🔥
Speedscope: Main vs PR
Hot asm: Main vs PR
Hot functions: Main vs PR
Counters: Main vs PR

[EgorBot]

cc @AndyAyersMS (logs)