[PATCH][X86] Unsafe copysign xform in DAGCombiner

[Friedman, Eli via llvm-commits]

On 9/9/2016 11:49 AM, Cameron McInally wrote:
> Are you guys suggesting checking both flags before disabling the
> xform? Or something else, like not pursuing the patch?

It's basically not worth pursuing at the moment.

I think 
http://lists.llvm.org/pipermail/llvm-dev/2016-February/094869.html is 
the current status of the work to support floating-point 
exceptions/rounding/etc.

-Eli

-- 
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project