[PATCH] D38944: [GVN] Handle removal of first implicit CF instruction correctly

[Daniel Berlin via Phabricator via llvm-commits]

dberlin added a comment.

Both of the deletions are in PRE, after it has been successful.  If either the inserted or the deleted instructions were implicit control flow, PRE should have been unsafe.  It's probably worth noting this in a comment


https://reviews.llvm.org/D38944