[llvm] [LV] Narrow truncated inductions in a VPlan transform (PR #220730)

[Florian Hahn via llvm-commits]

https://github.com/fhahn commented:

> Addressed the review comments by @fhahn, I had to rebase to fix merge conflicts. Is it okay to merge once the builds pass?

Usually it is good practice to wait a bit longer to give reviewers a chance to see if their comments have been addressed before merging.

https://github.com/llvm/llvm-project/pull/220730