[llvm] [VPlan] Model first memory runtime checks as VPlan recipes. (PR #221483)

[Ramkumar Ramachandra via llvm-commits]

================

----------------
artagnon wrote:

I would probably try just lift this entire thing into VPRuntimeCheckExpander? I don't think it has multiple use-sites anyway?

https://github.com/llvm/llvm-project/pull/221483