using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;
using System.IO;
using System.Text.RegularExpressions;

public class Program
{
    static void Main(string[] args) => BenchmarkSwitcher.FromAssemblies(new[] { typeof(Program).Assembly }).Run(args);

    private readonly string _input = File.ReadAllText(@"C:\romeojuliet.txt");
    private Regex _regex;

    [Params(false, true)]
    public bool Compiled { get; set; }

    [GlobalSetup]
    public void Setup() => _regex = new Regex(@"^.*\blove\b.*$", RegexOptions.Multiline | (Compiled ? RegexOptions.Compiled : RegexOptions.None));

    [Benchmark]
    public int Count() => _regex.Matches(_input).Count;
}