On Wed, Mar 11, 2015 at 3:04 PM, Ilia Mirkin <imir...@alum.mit.edu> wrote: > While I'm not opposed to this style of implementation, do note that > 99.9999738% of users will end up with distro-compiled packages > targeting generic x86_64 and thus won't use the SSE variant. If it's > really better, might make sense to do it "for real" (i.e. runtime > selection), otherwise just let it go and use rint/rintf everywhere so > that developers (who build their own libraries, probably with the > "right" -march) will get the same behaviour as users.
glibc uses roundsd/roundss in rint/f guarded by a runtime check. The SSE code here just allows those instructions to be inlined. _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
