[llvm] [VPlan] Improve getOrCreateVPValueForSCEVExpr (NFC) (PR #165699)

[Florian Hahn via llvm-commits]

https://github.com/fhahn approved this pull request.

Slightly clearer description/title would be something like `.. Use early exit in getOrCreateVPValueForSCEVExpr ...`


LGTM, thanks

https://github.com/llvm/llvm-project/pull/165699