[PATCH] D54841: [LoopSimplifyCFG] Don't delete LCSSA Phis

[Dave Green via Phabricator via llvm-commits]

dmgreen added a comment.

Thanks for the fix!

Just an FYI for how we found this, we have this pass enabled at a slightly different position in the pipeline. It's on essentially just after loop deletion, before the simple loop unrolling, hence Oliver found this as part of his csmith running. If you are running any random testing like csmith, it may be worth trying to enable the pass at a few other points in the pipeline to see if anything pops up.


Repository:
  rL LLVM

https://reviews.llvm.org/D54841