[llvm] [Loads] Respect UseDerefAtPointSemantics in isDerefAndAlignedPointer. (PR #123196)

[Nikita Popov via llvm-commits]

https://github.com/nikic requested changes to this pull request.

`nofree` on functions describes external effects. The function can still allocate and free memory internally. Value::canBeFreed() has some logic that supports this for function arguments, where the distinction doesn't matter.

https://github.com/llvm/llvm-project/pull/123196