EgorBo

$nettracePath = "C:\prj\net.nettrace"
$mibcPath = "C:\prj\my.mibc"

Remove-Item "bin" -Recurse -ErrorAction Ignore
Remove-Item "obj" -Recurse -ErrorAction Ignore
Remove-Item $nettracePath -Recurse -ErrorAction Ignore
Remove-Item $mibcPath -Recurse -ErrorAction Ignore

dotnet publish -c Release -r win-x64

EgorBo

using System;
using System.Diagnostics;
using System.Runtime.CompilerServices;

public static class Tests
{
    static void Main()
    {
        var ff = new ClassBFactoryFactory();
        var sw = Stopwatch.StartNew();

EgorBo

using System;

public class ClassA
{
    public virtual long GetValue() => 0;
}

public class ClassB : ClassA
{
    long a = 42;

EgorBo

Found 2 files with textual diffs.

Summary of Code Size diffs:
(Lower is better)

Total bytes of base: 3619334
Total bytes of diff: 3805940
Total bytes of delta: 186606 (5.16% of base)
Total relative delta: 2057.87
    diff is a regression.

EgorBo

--threshold 1% --noise 10ns
summary:
better: 59, geomean: 1.159
worse: 1, geomean: 1.026
total diff: 60

| Slower                                                                           | diff/base | Base Median (ns) | Diff Median (ns) | Modality|
| -------------------------------------------------------------------------------- | ---------:| ----------------:| ----------------:| --------:|
| Microsoft.AspNetCore.Server.Kestrel.Microbenchmarks.HPackHeaderWriterBenchmark.B |      1.03 |           815.89 |           837.18 |         |

EgorBo

using System.Collections.Generic;

namespace JitInlineInfoComparer
{
    public class InlineForest
    {
        public string Policy { get; set; }
        public List<Method> Methods { get; set; }

        public override string ToString() => $"InlineForest: {Policy}, {Methods.Count} Methods";

EgorBo

summary:
better: 498, geomean: 1.223
worse: 109, geomean: 1.178
total diff: 610

| Slower                                                                           | diff/base | Base Median (ns) | Diff Median (ns) | Modality|
| -------------------------------------------------------------------------------- | ---------:| ----------------:| ----------------:| -------- |
| System.Numerics.Tests.Constructor.ConstructorBenchmark_Int16                     |     15.25 |             0.36 |             5.44 |         |
| MicroBenchmarks.Serializers.Json_ToStream<CollectionsOfPrimitives>.DataContractJ |      1.96 |       1103971.24 |       2168800.00 |         |
| MicroBenchmarks.Serializers.Json_ToStream<MyEventsListerViewModel>.DataContractJ |      1.92 |        794602.87 |       1524700.00 |         |

EgorBo

summary:
better: 281, geomean: 1.159
worse: 1, geomean: 1.102
total diff: 282

// DynPGO:

| Slower                                                                           | diff/base | Base Median (ns) | Diff Median (ns) | Modality|
| -------------------------------------------------------------------------------- | ---------:| ----------------:| ----------------:| --------:|
| System.Text.Json.Reader.Tests.Perf_Base64.ReadBase64EncodedByteArray_HeavyEscapi |      1.10 |           140.70 |           155.05 |         |

EgorBo

summary:
better: 169, geomean: 1.128
worse: 2, geomean: 1.131
total diff: 171

// Default:

| Slower                                                                           | diff/base | Base Median (ns) | Diff Median (ns) | Modality|
| -------------------------------------------------------------------------------- | ---------:| ----------------:| ----------------:| --------:|
| System.Text.Json.Tests.Perf_Guids.WriteGuids(Formatted: False, SkipValidation: F |      1.14 |       5956802.85 |       6790316.74 |         |

EgorBo

EgorPR vs Main (both use default options)

| Faster                                                                           | base/diff | Base Median (ns) | Diff Median (ns) | Modality|
| -------------------------------------------------------------------------------- | ---------:| ----------------:| ----------------:| --------:|
| Engine.Scripting.InvokeMethod(InvokeMethodScript: "[System.IO.Path]::HasExtensio |      1.14 |          1391.54 |          1221.81 |         |
| Engine.Scripting.InvokeMethod(InvokeMethodScript: "'String'.GetType()")          |      1.12 |          1388.71 |          1237.80 |         |
| Engine.Scripting.InvokeMethod(InvokeMethodScript: "$fs=New-Object -ComObject scr |      1.03 |         51735.42 |         50022.99 |         |
| Engine.Scripting.InvokeMethod(InvokeMethodScript: "$sh=New-Object -ComObject She |      1.01 |        800938.54 |        791337.34 |         |