GetThreadStaticsBase method is not included in R2R image #123616

using System;
using System.Runtime.CompilerServices;
using System.Threading;

public class Program {
    [ThreadStatic]
    private static int a;

    [MethodImpl(MethodImplOptions.NoInlining)]
    public static int GetA()
    {
        return a;
    }
    [MethodImpl(MethodImplOptions.NoInlining)]
    public static void SetA(int val)
    {
        a = val;
    }

    public static void Main(string[] args)
    {
        a = 1;

        for (int i = 0; i < 500000000; i++)
            SetA(GetA() + 1);
    }
}