app.js

'use strict';

function run(callback) {
    main(bench, v8_mute, callback);
    main(bench, if_func_1, callback);
    main(bench, if_func_2, callback);
  	main(bench, if_func_3, callback);
}

function main(bench, func) {
  console.time();
  bench(func);
  console.timeEnd(); 
}

function bench(func) {
  let i;
  
  for (i = 2147483647; -2147483648 !== i ; i--) {
    func(i);
  }

  return;
}

function v8_mute(i) {
    return;
}

function if_func_1(i) {
  if (0 === i) {
    return;
  }

  if (1 === i) {
    return;
  }

  if (2 === i) {
    return;
  }

  if (3 === i) {
    return;
  }

  return;
}

function if_func_2(i) {
  if (0 === i) {
    return;
  } else if (1 === i) {
    return;
  } else if (2 === i) {
    return;
  } else if (3 === i) {
    return;
  }

  return;
}

function if_func_3(i) {
  if (0 === i || 1 === i || 2 === i || 3 === i) {
    return;
  }

  return;
}

run();