llvm-project

36e1633e - [VPlan] Skip FindLast reductions with malformed blends. (#197900)

[VPlan] Skip FindLast reductions with malformed blends. (#197900) https://github.com/llvm/llvm-project/issues/197701 exposed a case where we end up with an unsupported backedge select for FindLast reductions. Replace unreachable with a bail out to avoid miscompile/crash. Fixes https://github.com/llvm/llvm-project/issues/197701