On Wed, Sep 13, 2017 at 03:41:19PM +0200, Richard Biener wrote: > On its own -O3 doesn't add much (some loop opts and slightly more > aggressive inlining/unrolling), so whatever it does we > should consider doing at -O2 eventually.
Well, -O3 adds vectorization, which we don't enable at -O2 by default.
Jakub
