llvm-project

31b93d6e - [VPlan] Add specialized VPValue subclasses for different types (NFC) (#172758)

[VPlan] Add specialized VPValue subclasses for different types (NFC) (#172758) This patch adds VPValue sub-classes for the different cases we currently have: * VPIRValue: A live-in VPValue that wraps an underlying IR value * VPSymbolicValue: A symbolic VPValue not tied to an underlying value, e.g. the vector trip count or VF VPValues * VPRecipeValue: A VPValue defined by a VPDef/VPRecipeBase. This has multiple benefits: * clearer constructors for each kind of VPValue * limited scope: for example allows moving VPDef member to VPRecipeValue, reducing size of other VPValues. * stricter type checking for member variables (e.g. using VPLiveIn in the Value -> live-in map in VPlan, or using VPSymbolicValue for symbolic member VPValues) There probably are additional opportunities for cleanups as follow-ups. PR: https://github.com/llvm/llvm-project/pull/172758