[llvm] [LoopIdiomRecognize] Enable clmul optimization for CRC loops (PR #203405)

[Sean Clarke via llvm-commits]

xarkenz wrote:

I'm going to work on a PR for llvm-test-suite which strengthens the HashRecognize unit tests. This PR should depend on that one so that CI checks it against the strengthened tests.

https://github.com/llvm/llvm-project/pull/203405