Quote Originally Posted by phoronix View Post
Phoronix: Gentoo Does An x32 Stage 3 Release Candidate

Gentoo is one of the first Linux distributions to release a packaged installation for the Linux x32 architecture...

http://www.phoronix.com/vr.php?view=MTExNTE
Mozilla should obtain x32 from Gentoo soon. Gentoo's x32 development lead to a patch that is being pushed upstream, as does many of the other things Gentoo does:

https://bugzilla.mozilla.org/show_bug.cgi?id=767759