[llvm] [InstCombine] Make test resilient to metadata presence (PR #157607)

[Nikita Popov via llvm-commits]

https://github.com/nikic approved this pull request.

LGTM, but do you actually still need the prof metadata for your original motivation after this change? I guess the grep was previously matching the wrong thing, which should no longer be a problem. If it's not needed I'd drop it again.

https://github.com/llvm/llvm-project/pull/157607