[PATCH] D37175: Fix PR/33305. caused by trying to simplify expressions in phi of ops that should have no leaders.

[Daniel Berlin via Phabricator via llvm-commits]

dberlin added a comment.

This also fixes PR 33432, i forgot to add it to the log :)
With the latest update it should be correct now.

The only case we now miss is where we could use a phi-of-ops we created earlier to get the values.
I will handle this case in a followup


https://reviews.llvm.org/D37175