On Thu, 23 Apr 2009, David Ronis wrote: > >From the info pages it seems that the new optimizations, > -floop-interchange, -floop-strip-mine, and -floop-block, are NOT turned > on when -O3 is specified. Is this correct and if so, why aren't they?
Because the behavior of -O3 must not depend on whether optional libraries are linked into GCC, and we did not decide to make PPL and CLooG required to build GCC, so -O3 cannot enable any optimizations using optional libraries. -- Joseph S. Myers jos...@codesourcery.com
