[clang] [llvm] [IR] Memory effects for floating-point operations (PR #221754)

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CarolineConcatto wrote:

Is it possible to split this change in at least 2. One you only create the memory locations, and the other where you change the intrinsics? We should also consider what we would if we need to change the version of Bitcode.

https://github.com/llvm/llvm-project/pull/221754