[llvm] [InstCombine] Avoid unprofitable add with remainder transform (PR #147319)

[Nikita Popov via llvm-commits]

nikic wrote:

Updated to narrow the exclusion to just the unsigned, power-of-two (which is not 2) case, so this should now only exclude the specific case of converting and to mul.

https://github.com/llvm/llvm-project/pull/147319