[Bug other/87036] -O1/-O2 affects floating point precision on at least i686 and ppc64el

[doko at ubuntu dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87036

--- Comment #3 from Matthias Klose <doko at ubuntu dot com> ---
On 21.08.2018 09:53, pinskia at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87036
> 
> --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
> For powerpc at least this is due to fma. Use -ffp-contract=off to turn it off.

yes, -ffp-contract=off helps.