[llvm] [SimplifyCFG] Don't block sinking for allocas if no phi created (PR #104579)

[Yingwei Zheng via llvm-commits]

https://github.com/dtcxzyw approved this pull request.

LGTM. Thank you!
Can you file a subsequent patch to remove this workaround thoroughly?


https://github.com/llvm/llvm-project/pull/104579