[llvm] [VPlan] Optimize resume values of IVs together with other exit values. (PR #174239)

[David Sherwood via llvm-commits]

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

Hi, it's quite a tricky patch to review so I've done this in two parts. I'll take a look at the llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp changes later as well!

https://github.com/llvm/llvm-project/pull/174239