> >you may try adding -fmove-loop-invariants flag, which enables new > >invariant motion pass. > > That cleaned up both my simplified test case, and the code it > originated from. It also cleaned up a few other cases where I > was noticing worse performance with FDO enabled. Thanks!! > > Perhaps this option should be enabled by default when doing FDO > to replace the loop invariant motions done by the recently > disabled loop optimize pass.
This sounds like sane idea. Zdenek, is -fmove-loop-invariants dangerous in some way or just disabled because old loop does the same? Honza > > Pete
