IMUL vs SHL.cs

    public class Bench
    {
        int mul = 10;
        int by = 4;

        [Benchmark(Baseline = true)]
        public int Mul()
        {
            var a = mul;
            var b = by;

            int all = 0;
            all += a * b;
            all += a * b;
            all += a * b;
            all += a * b;
            all += a * b;
            all += a * b;
            all += a * b;
            all += a * b;
            return all;
        }

        [Benchmark]
        public int MulReduced()
        {
            var a = mul;

            int all = 0;
            all += a * 4;
            all += a * 4;
            all += a * 4;
            all += a * 4;
            all += a * 4;
            all += a * 4;
            all += a * 4;
            all += a * 4;
            return all;
        }
    }