[PATCH] D29064: [MemorySSA] Add invariant.group handling

[Daniel Berlin via Phabricator via llvm-commits]

dberlin added a comment.

(IE the use optimizer is a faster version of the walker, it's not better.
You are making something that is better, but if you don't add that to the walker, newly built memoryssa will support it but updated won't)


https://reviews.llvm.org/D29064