http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57056
--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> 2013-04-24 18:43:08 UTC --- Some relevant links: PR 56944 http://sourceware.org/bugzilla/show_bug.cgi?id=15384 http://sourceware.org/ml/libc-alpha/2013-04/msg00568.html Note that on my core2 laptop, it is not obvious that this would be a speed improvement (I see a very small slowdown, but those are all very close anyway). Code size might be an easier way to judge.
