[PATCH] D37460: [GVN] Prevent LoadPRE from hoisting across instructions that don't pass control flow to successors

[Daniel Berlin via Phabricator via llvm-commits]

dberlin added a comment.

This is use after free.
When the first implicit control flow instruction for a bb gets erased, we now have wrong info.

Previously, when this was filled in on the fly, this would be easy to fix.
But now it's much harder.


Repository:
  rL LLVM

https://reviews.llvm.org/D37460