[Bug tree-optimization/55760] scalar code non using rsqrtss and rcpss

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55760



--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-20 
15:52:31 UTC ---

Use -mrecip.  It's otherwise not safe for SPEC CPU 2006 which is why it is not

enabled by default for -ffast-math.