[llvm] [Analysis] Adding convert_from_arbitrary_fp support in computeKnownFPClass. (PR #208585)

[Chirag Patel via llvm-commits]

ChiragPatel8 wrote:

I've added the no-signed-zero and not representative inf test cases. Please note, the no-signed-zero is not supported at the moment and it will fail.

https://github.com/llvm/llvm-project/pull/208585