[llvm] [VPlan] Materialize constant vector trip counts before final opts. (PR #142309)

[Florian Hahn via llvm-commits]

https://github.com/fhahn commented:

> Just checking if comments posted on July 3 were noticed?


Argh yes, apologies, I missed them between approval and the delay in landing...

Should be addressed in 777c320e6c96e2de9d4c6dc52d6a85a5ef3b8569

https://github.com/llvm/llvm-project/pull/142309