[llvm] [VPlan] Add VPValue for VF, use it for VPWidenIntOrFpInductionRecipe. (PR #95305)

[David Sherwood via llvm-commits]

https://github.com/david-arm commented:

Overall this patch looks like a win by generally reducing the lines of emitted IR! I just have a few comments on the implementation and some observations on the tests.

https://github.com/llvm/llvm-project/pull/95305