Wrapping int comparison

NoBoxWrap.cs

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

namespace CoreMkRef
{
    class Program
    {
        static void Main(string[] args)
        {
            var summary = BenchmarkRunner.Run<Unboxed>();
            long startBytes = GC.GetAllocatedBytesForCurrentThread();
            long consumed = GC.GetAllocatedBytesForCurrentThread() - startBytes;
        }
    }

    public class Unboxed
    {
        [Benchmark]
        public void TestIt()
        {
            int i = 42;
            var iref = __makeref(i);
            i += Double(iref);
        }

        [Benchmark]
        public void TestItVariant()
        {
            int i = 42;
            i += DoubleVariant(i);
        }

        [MethodImpl(MethodImplOptions.NoInlining)]
        static int Double(TypedReference typed)
        {
            if (__reftype(typed) == typeof(int))
                return __refvalue(typed, int);
            return 0;
        }

        [MethodImpl(MethodImplOptions.NoInlining)]
        static int DoubleVariant(Variant variant)
        {
            if (variant.Type == VariantType.Int32)
                return (int)variant;
            return 0;
        }
    }
}