llvm-project

2f7e2180 - [VPlan] Add missing sext(sub) SCEV fold to getSCEVExprForVPValue.

[VPlan] Add missing sext(sub) SCEV fold to getSCEVExprForVPValue. SCEV has a manual fold when doing SCEV construction from IR, that is not integrated in the regular SCEV construction functions. Mirror the behavior in getSCEVExprForVPValue, to match results when constructing SCEVs from IR. Fixes https://github.com/llvm/llvm-project/issues/174622.