llvm-project

71be13a6 - [VPlan] Rewrite VPExpandSCEVExprs in replaceSymbolicStrides.

[VPlan] Rewrite VPExpandSCEVExprs in replaceSymbolicStrides. Extend replaceSymbolicStrides to also replace SCEVUnknowns in VPExpandSCEVExprs using the information from StridesMaps. This results in simpler SCEV expansions in some cases.