Re: Optimization - does O3 always generate faster code than O2? %Therefore, I guess the conclusion (at least for gcc 3) is %1. -O2 does not mandate loop unrolling; %2. with -O or -O2, loop unrol...
Optimization - does O3 always generate faster code than O2? Is it possible that code generated using the O2 option runs faster than that using O3, for example? Is it posible that an optimzation ...