[llvm] [llvm-diff] Add Commutativity on BinOp (PR #123314)

[Serval MARTINOT-LAGARDE via llvm-commits]

Serval6 wrote:

Thanks for this answer, it fits my use case well. However, it is still necessary to create an intermediate file.

Would it be interesting to add a flag to `llvm-diff` to be able to run this normalization pass directly before the `DiffEngine`?

https://github.com/llvm/llvm-project/pull/123314