bench_2.cs

 public class Bench92
    {
        [Benchmark(Baseline = true)]
        [MethodImpl(MethodImplOptions.NoInlining)]
        [Arguments(0)]
        public int A(int x)
        {
            try { _ = 1; } catch { }
            for (int i = 0; i < 10000; i++) {
                x++; x++; x++; x++;
            }
            return x;
        }

        [Benchmark()]
        [MethodImpl(MethodImplOptions.NoInlining)]
        [Arguments(0)]
        public int B(int x)
        {
            try { _ = 1; } catch { }
            var y = x;
            for (int i = 0; i < 10000; i++) {
                y++; y++; y++; y++;
            }
            return y;
        }
    }