[llvm] [LLVM] Refactor Autoupgrade function attributes from Module attributes. (PR #84494)

[via llvm-commits]

DanielKristofKiss wrote:

Once all patches around the flag handling landed we can further reduce the work here #84804 so only would do any work if we import an older version the IR.

https://github.com/llvm/llvm-project/pull/84494