I recently came across this awesome article and presentation about Breaking the JavaScript Speed Limit with V8. This is awesome!
However, I'm a Firefox fan and wondering if there's a way to profile the JIT for Mozilla's tools. Mostly I'd like to see if a compilation has to bail or is missing out on some kind of optimization that could otherwise be had.
Is this possible? Thanks!
It's possible in debug Firefox builds to some extent. In an opt build you can install https://addons.mozilla.org/en-US/firefox/addon/jit-inspector/ which will tell you what the JIT is doing, but not what it could have done....