Delegate GetHashCode Performance

Program.cs

//#define USE_CUSTOM_COMPARER
using System;
using System.Collections.Generic;
using System.Diagnostics;

public class Program
{
    private const int Iterations = 8000;
    public static void Main (string[] args)
    {
        var foos = new List<Foo> ();
        var set = new HashSet<Action> (
#if USE_CUSTOM_COMPARER
                new ActionEqualityComparer ()
#endif
            );
        for (var i = 0; i < Iterations; i++)
        {
            foos.Add (new Foo ());
            set.Add(foos[i].Bar);
        }

        var stopwatch = new Stopwatch ();
        stopwatch.Start ();

        var total = 0;
        foreach (var foo in foos)
            total += set.Contains (foo.Bar) ? 1 : 0;

        stopwatch.Stop ();

        Console.WriteLine ("Duration: " + stopwatch.ElapsedMilliseconds + " ms ");
        GC.KeepAlive (total);
    }

    class Foo { public void Bar () { } }

    class ActionEqualityComparer : EqualityComparer<Action>
    {
        public override bool Equals (Action x, Action y)
        {
            return x.Equals (y);
        }

        public override int GetHashCode (Action obj)
        {
            if (obj == null)
                return 0;

            return obj.Target != null ? obj.Target.GetHashCode () : obj.GetHashCode ();
        }
    }
}