If it's a recent version of Firefox, the "use asm" in [1] probably explains the difference. [1]: http://alexey.radul.name/ideas/2013/cleverness-of-compilers/ma

If it's a recent version of Firefox, the "use asm" in [1] probably explains the difference. [1]: http://alexey.radul.name/ideas/2013/cleverness-of-compilers/mandel.js http://alexey.radul.name/ideas/2013/cleverness-of-compilers/...