[PATCH] D43695: [IPSCCP] mark musttail calls overdefined (PR36485)

[Fedor Indutny via Phabricator via llvm-commits]

indutny added a comment.

I think I've "under-implemented" the fix here. First of all, it doesn't mark callees overdefined, which leads to zapped return value. Second, it basically kills whole optimization because of musttail call site.

What would be the proper implementation in this case? I've few ideas, but I could easily underestimate the scope of the problem.


https://reviews.llvm.org/D43695