Comment # 4 on bug 1142656 from Martin Li��ka

(In reply to Richard Biener from comment #3)
> But it's supposedly fixed already with the last update.
> 
> https://gcc.gnu.org/PR91231
> 
> Tue Jul 23 11:21:03 UTC 2019 - rguenther@suse.com
> 
> - Update to gcc-9-branch head (r273734).
>   * Includes fix for opencv3 build with LTO.  [gcc#91231]

Yes, it's resolved.