https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113665
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> --- (In reply to Jan Hubicka from comment #8) > > Honza - ICF seems to fixup points-to sets when merging variables, so there > > should be a way to kill off flow-sensitive info inside prevailing bodies > > as well. But would that happen before inlining the body? Can you work > > on that? I think comparing ranges would weaken ICF unnecessarily? > > AFAIK ICF does no changes to winning function body. It basically relies > on the fact that early optimizations are local and thus arrive to same > solutions for most of metadata. So only really easy fix is to make it > match value ranges, too. I will check how much that fire in practice - > I can only think of split funtions to diverge, which is probably not > that bad in practice. But is it possible to add a local transform stage and would that also affect which body we inline? But yes, inlining the original body would be so much better ...
