src/third_party/mozjs-45/js/src/jit-test/tests/profiler/enterjit-osr-enabling.js

setJitCompilerOption("baseline.warmup.trigger", 10);
setJitCompilerOption("ion.warmup.trigger", 20);

(function() {
   enableSPSProfilingWithSlowAssertions();
   var n = 50;
   while (n--);
})();