[joelgwebber]

FWIW, I just ran it through Clang 4.1 (the standard on XCode these days), and got roughly identical performance. I'm still compiling gcc 4.8 just to be sure, but it seems unlikely to make much of a difference.

[eliben]

There's no Clang 4.1, though. You probably mean "the Clang that comes with version 4.1 of XCode"?

Clang 3.3 will be released soon.

[joelgwebber]

Good point. Apple helpfully reports the rather confusing version string "Apple clang version 4.1 (tags/Apple/clang-421.11.65) (based on LLVM 3.1svn)" :P