[llvm] [VPlan] Create strided accesses with loop-inv step (PR #214476)

[Ramkumar Ramachandra via llvm-commits]

artagnon wrote:

This is now a trivial patch, and the core logic has been moved to https://github.com/llvm/llvm-project/pull/216760.

https://github.com/llvm/llvm-project/pull/214476