[PATCH] D132450: StructurizeCFG: Set Undef for non-predecessors in setPhiValues()

[Ruiling, Song via Phabricator via llvm-commits]

ruiling added a comment.

In D132450#3748269 <https://reviews.llvm.org/D132450#3748269>, @fhahn wrote:

> Should this use poison instead of undef?

If I understand Poison correctly, Poison should work the same as Undef when they are used as incoming value to PHI, right? If so, changing to poison should work, but that should be in a separate change.


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