[llvm] [InstCombine] Detect different vscales in div by shift combine. (PR #126411)

[Nikita Popov via llvm-commits]

https://github.com/nikic commented:

Would it make sense to add a fold like this instead? https://alive2.llvm.org/ce/z/aCJLn9

https://github.com/llvm/llvm-project/pull/126411