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

[David Sherwood via llvm-commits]

https://github.com/david-arm requested changes to this pull request.

Please correct me if I'm mistaken, but I believe there is a bug in the IR for the tests changed in llvm/test/Transforms/LoopVectorize/AArch64/reduction-cost.ll.

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