Hi, > Martin, > > thanks for the explanation. > > I knew inliner did a good job of maintaining callgraph and profile > information, but did not know about removing dead edges etc.
This was fixed with introduction of virtual clones, where the edges are still needed post inlining. We however do not maintain them longer. It should not be that hard to do so - we already maintain EH tables on side of the statements themselves, so one would just hook at the same places as EH updating is done. So far it was not neccesary. > > However the situation you described (unwanted edges, post-ipa DCE > eliminating calls without updating cg etc) won't be a big issue for > Sri's use case as the edges that needed to be written to the note > section are those with non-zero count -- which means they are 'live' > and won't be eliminated. > > However, making cg permanent would be even better :) -- there are > definitely other use cases (post-ipa) of it in the future. I would not be opposed to that, it just need some work ;) Honza
