[PATCH] D63489: [InstSimplify] LCSSA PHIs should not be simplified away

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri added a comment.

Since this problem is being encountered, i'm guessing that even without this workaround,
the same problem can still be encountered if the original IR is not in LCSSA form to begin with,
i.e. i think the D60834 <https://reviews.llvm.org/D60834> sounds like the properer fix (ignoring the roadblocks on the way there.)


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https://reviews.llvm.org/D63489