[llvm] [LLVM][SCEV] Look through common vscale multiplicand when simplifying compares. (PR #141798)

[Ramkumar Ramachandra via llvm-commits]

https://github.com/artagnon approved this pull request.

LGTM, thanks! Kindly wait on a second reviewer.

https://github.com/llvm/llvm-project/pull/141798