On 05/30/2017 11:43 AM, Eric Botcazou wrote: >> Are you sure? In my experience -O2 gets the most test coverage during >> lifetime of a particular release. > > Yes, some older GCC releases have aliasing issues that are exposed at -O2 > only > because of -fstrict-aliasing and -fschedule-insns. >
That's why we decided to enable -O2 just with GCC 4.8+. Martin
