The Tor Browser / file revision

 var wait = 100;

 var method_A = function() {

     for (var t = 0; t < wait; ++t) {}

 }

 var method_B = function() {

     for (var t = 0; t < wait; ++t) {}

 }

 var method_C = function() {

     for (var t = 0; t < wait; ++t) {}

 }

 var method_D = function() {

     for (var t = 0; t < wait; ++t) {}

 }

 var func = [method_A, method_B, method_C, method_D]

 for (var n = 0; n < 4; ++n) {

     setJitCompilerOption("baseline.enable", n & 1);

     setJitCompilerOption("ion.enable", n & 2 ? 1: 0);

     var opt = getJitCompilerOptions();

     assertEq(opt["baseline.enable"], n & 1);

     assertEq(opt["ion.enable"], n & 2 ? 1 : 0);

     for (var i = 0; i < 1001; ++i)

         func[n]();

 }