[llvm] [SimplifyCFG] Don't hoist instructions with mismatched !nontemporal (PR #206648)

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222rohan wrote:

> @222rohan When it comes to optimization issues (as opposed to correctness issues), please limit yourself strictly to issues that occur in real-world code. You should be able to cite a specific instance of code that will benefit, not just hypothesize the possibility of its existence.

Thanks for the review. Closing as I cannot find a specific real-world instance that could benefit from this change.

https://github.com/llvm/llvm-project/pull/206648