[llvm] [LV] Use SCEV to compute final value of complex induction variables (PR #195059)

[Ramkumar Ramachandra via llvm-commits]

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

Looks good, and I think you've addressed Florian's comment on sext/zext which I missed, and his VPSCEVExpander comment (introduced recently). Moreover, I think you've used our update to the VPDerivedIV start value. Looks good, but kindly give Florian 48h to take a look before landing?

https://github.com/llvm/llvm-project/pull/195059