Benchmarks for #122167 (EgorBo)

[EgorBot]

Processing dotnet/runtime#122167 (comment) command:

Command

-amd -arm

using BenchmarkDotNet.Attributes;

[MemoryDiagnoser]
[DisassemblyDiagnoser]
public class Bench
{
    private Nullable<bool> _null = null;
    private Nullable<bool> _nonnull = true;

    [Benchmark] public object BoxNull() => _null; 

    [Benchmark] public object BoxNonNull() => _nonnull;

    // https://github.com/dotnet/runtime/issues/50915
    private S? _ns = (S?)default(S);
    [Benchmark] public int Issue50915() => CallM(_ns);
    static int CallM<T>(T t)
    {
        if (t is IMyInterface)
            return ((IMyInterface)t).M();
        return 0;
    }
}

interface IMyInterface
{
    int M();
}

struct S : IMyInterface
{
    public int M() => 42;
}

(EgorBot will reply in this issue)

[EgorBot]

Benchmark results on linux_azure_genoa

BenchmarkDotNet v0.15.0, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 9V74, 1 CPU, 16 logical and 8 physical cores
  Job-AVYDJT : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
  Job-LTTTKC : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI

Method	Toolchain	Mean	Error	Ratio	Gen0	Code Size	Allocated	Alloc Ratio
BoxNull	Main	1.1080 ns	0.0004 ns	1.00	-	99 B	-	NA
BoxNull	PR	0.0173 ns	0.0057 ns	0.02	-	50 B	-	NA
BoxNonNull	Main	11.0374 ns	0.0352 ns	1.00	0.0014	592 B	24 B	1.00
BoxNonNull	PR	5.3487 ns	0.0878 ns	0.48	0.0014	50 B	24 B	1.00
Issue50915	Main	10.4755 ns	0.0175 ns	1.00	0.0014	626 B	24 B	1.00
Issue50915	PR	0.7180 ns	0.0004 ns	0.07	-	81 B	-	0.00

Artifacts.zip

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

[EgorBot]

Benchmark results on linux_azure_cobalt100

BenchmarkDotNet v0.15.0, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
Neoverse-N2, 16 physical cores
  Job-LRNVCS : .NET 10.0.0 (42.42.42.42424), Arm64 RyuJIT AdvSIMD
  Job-YUVDAF : .NET 10.0.0 (42.42.42.42424), Arm64 RyuJIT AdvSIMD

Method	Toolchain	Mean	Error	Ratio	Gen0	Code Size	Allocated	Alloc Ratio
BoxNull	Main	0.8051 ns	0.0008 ns	1.000	-	144 B	-	NA
BoxNull	PR	0.0000 ns	0.0000 ns	0.000	-	68 B	-	NA
BoxNonNull	Main	10.5868 ns	0.0391 ns	1.00	0.0004	612 B	24 B	1.00
BoxNonNull	PR	3.8051 ns	0.0218 ns	0.36	0.0004	68 B	24 B	1.00
Issue50915	Main	9.2990 ns	0.0128 ns	1.00	0.0004	640 B	24 B	1.00
Issue50915	PR	1.6665 ns	0.0030 ns	0.18	-	88 B	-	0.00

Artifacts.zip

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