On Wed, Mar 11, 2015 at 6:09 PM, Matt Turner <matts...@gmail.com> wrote: > 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.
OK, as long as glibc would end up using the same rounding mode settings, Reviewed-by: Ilia Mirkin <imir...@alum.mit.edu> _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
