[llvm] [HashRecognize] Fix LHS ConstantRange check for BE (PR #148620)

[Piotr Fusik via llvm-commits]

pfusik wrote:

> Wouldn't be robust to changes in InstCombine, I mean.

The instruction sequence for CRC seems simple enough that I wouldn't expect many variations.

Our tests should catch the changes. Perhaps testing against C sources or on an IR right after parsing might help?

https://github.com/llvm/llvm-project/pull/148620