Benchmark AoT OptimizationPreference

[eNeRGy164]

With AoT 8.0 we can define the MSBuild property OptimizationPreference as Speed or Size.
https://learn.microsoft.com/en-us/dotnet/core/deploying/native-aot/optimizing

I would like to run benchmarks to see the difference (Clock Wall tests with StopWatch shows 8% difference in some of my apps)

How can I create Jobs with different values for this specific setting?

[timcassell]

Something like this.

var config = DefaultConfig.Instance
    .AddJob(Job.Default.WithArguments(new Argument[] { new MsBuildArgument("/p:OptimizationPreference=Speed") }).WithId("Speed"))
    .AddJob(Job.Default.WithArguments(new Argument[] { new MsBuildArgument("/p:OptimizationPreference=Size") }).WithId("Size"));
BenchmarkSwitcher.FromAssembly(typeof(Program).Assembly).Run(args, config);

[adamsitnik]

You can also use the NativeAotToolchainBuilder.IlcOptimizationPreference and build a dedicated toolchain with different settings

BenchmarkDotNet/src/BenchmarkDotNet/Toolchains/NativeAot/NativeAotToolchainBuilder.cs

Line 124 in 7dacb16

public NativeAotToolchainBuilder IlcOptimizationPreference(string value = "Speed")