http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41969
travnick <mikolajmm at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mikolajmm at gmail dot com --- Comment #6 from travnick <mikolajmm at gmail dot com> 2012-04-29 18:48:49 UTC --- I have the same issue with flags: -fwhole-program -ftlo (-flto: eaven slower, faster (this result) for me: -flto=2) -fuse-linker-plugin In my project: https://github.com/travnick/GKiO-Projekt-GK after applying this flags, default scene renders in 30-32s on my machine. Without them it takes only 19-22 s so this flags make my project slower by 50%. gcc version 4.7.0 20120414 (prerelease) (GCC) Linux 3.3-pf #2 SMP PREEMPT Sat Apr 28 02:09:06 EEST 2012 x86_64 Intel(R) Core(TM)2 Duo CPU T6600 @ 2.20GHz GenuineIntel GNU/Linux