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

[Florian Hahn via llvm-commits]

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fhahn wrote:

I added a bit more details in https://github.com/llvm/llvm-project/pull/221483/changes#r4081102714, checking the generated IR gives the most accurate results 

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