[llvm] [SCEV] Try to push op into ZExt: C * zext (A + B) -> zext (A*C + B*C) (PR #155300)

[Florian Hahn via llvm-commits]

https://github.com/fhahn commented:

Compile-time results look neutral overall http://llvm-compile-time-tracker.com/compare.php?from=bac8c8784c848f1dd7ddf44a9a463e6c15c6e594&to=89977e0dec139faae854c94fe932b7b768e60537&stat=instructions:u

https://github.com/llvm/llvm-project/pull/155300