[Bug libstdc++/85466] Performance is slow when doing 'branchless' conditional style math operations

[rguenther at suse dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85466

--- Comment #13 from rguenther at suse dot de <rguenther at suse dot de> ---
On Thu, 19 Apr 2018, glisse at gcc dot gnu.org wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85466
> 
> --- Comment #12 from Marc Glisse <glisse at gcc dot gnu.org> ---
> Constant folding for nextafter seems like a useful thing to add, whatever we
> say about the rest of the testcase.

Indeed - looks like this and related functions are not constant folded for
whatever reason...