[PATCH] D38392: Disallow sinking of unordered atomic loads into loops

[Dehao Chen via Phabricator via llvm-commits]

danielcdh added a comment.

I see your point now. My concern is performance: if we allow hoisting of atomic load, but not allow sinking it, we may end up with bad performance as we may have too much redundant atomic loads in the preheader. Any suggestions on how to solve that?


https://reviews.llvm.org/D38392