https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82229
Bug ID: 82229
Summary: GCC7's LTO underperforms compared to GCC6
Product: gcc
Version: 7.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: krzysio.kurek at wp dot pl
Target Milestone: ---
A small SFML project on github:
https://github.com/Hopson97/Empire
Takes huge advantage of -flto flag on GCC6, but after upgrading to GCC7, the
difference is negligible.
Here are some of my test results:
gcc6.3 no flto: 24-25 fps
gcc7.2 no flto: 24 fps
gcc6.3 with flto: 40-42fps
gcc7.2 with flto: 26-27fps
