[llvm] [SCEVDivision] Add SCEVDivisionPrinterPass with corresponding tests (PR #155832)

[Nikita Popov via llvm-commits]

https://github.com/nikic commented:

Seeing these tests, I think the handling of multiplication is actually correct after all, if you take into account that SCEVDivision does not actually perform division (which we should document).

https://github.com/llvm/llvm-project/pull/155832