[PATCH] D83562: [fix-irreducible] Skip unreachable predecessors.

[Sameer Sahasrabuddhe via Phabricator via llvm-commits]

sameerds added a subscriber: cdevadas.
sameerds added a comment.

@cdevadas reported that other parts of the AMDGPU backend are also affected by the unreachable blocks being produced in the switch lowering. Instead of fixing each such pass separately, it seems the best way forward it to put the block elimination earlier in the flow. @cdevadas is already working on such a change.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D83562/new/

https://reviews.llvm.org/D83562