[llvm] [LoopLoadElim] Fix miscompile caused by incorrect store-to-load forwarding across mixed-width clobbers (PR #224833)

[Hadong Lee via llvm-commits]

ChrisLee02 wrote:

@nikic @fhahn 
Hi, could you check CI status?
Ci has been stuck by CI Checks / Build and Test Windows (pull_request) from last night.

https://github.com/llvm/llvm-project/pull/224833