[llvm] Pick other one if is/contains (PR #81428)

[Nikita Popov via llvm-commits]

nikic wrote:

Removed the FIXMEs in https://github.com/llvm/llvm-project/commit/f7f947e6208cb65ab1a29c4573bf927f967b9d5d, see commit message for rationale. Your patch is incorrect, and making it correct is not worthwhile.

https://github.com/llvm/llvm-project/pull/81428