[llvm] [LoopVectorize][NFC] Rewrite tests to check output of vplan cost model (PR #113697)

[Florian Hahn via llvm-commits]

fhahn wrote:

Thank you for adjusting the tests that check the cost model! 

There still a few cases we fall back to legacy costs in the VPlan cost model, which would be good to be protected by the assertion until those are completed. I think the biggest one is finishing computing costs for some reductions  in VPlan directly, which @ElvisWang123 is working on in https://github.com/llvm/llvm-project/pull/113903

https://github.com/llvm/llvm-project/pull/113697