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On Thu, Aug 8, 2013 at 1:56 PM, Mark Lacey <mark.lacey at apple.com> wrote: > > On Aug 8, 2013, at 9:56 AM, Jim Grosbach <grosbach at apple.com> wrote: > > Hi Chad, > > This is a great transform to do, but you’re right that it’s only safe > under fast-math. This is particularly interesting when the original divisor > is a constant so you can materialize the

On Aug 8, 2013, at 9:56 AM, Jim Grosbach <grosbach at apple.com> wrote: > Hi Chad, > > This is a great transform to do, but you’re right that it’s only safe under fast-math. This is particularly interesting when the original divisor is a constant so you can materialize the reciprocal at compile-time. You’re right that in either case, this optimization should only kick in when

...o, I think this is a really nice way to capture all of the potential benefits of forming reciprocals without pessimizing code where it isn't helpful. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20130808/a0f3c417/attachment.html>