[PATCH] D69442: [CVP] prevent propagating poison when substituting edge values into a phi (PR43802)

[Sanjay Patel via Phabricator via llvm-commits]

spatel added a comment.

In D69442#1722258 <https://reviews.llvm.org/D69442#1722258>, @nikic wrote:

> This all seems pretty fragile and there might be issues in the future if LVI gets more powerful, but I guess that for now this is fine.


I agree, and thanks for looking further into this. I'll leave a TODO comment about this as well as trying to re-infer the flags.


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