llvm-project

808a6ba3 - [VPlan] Bail out when rdx result cannot be found in handleFindLast.

[VPlan] Bail out when rdx result cannot be found in handleFindLast. Turn assertion from 2abd6d6d7ac (https://github.com/llvm/llvm-project/pull/158088) into a bail out to prevent crash when tail-folding. Fixes https://github.com/llvm/llvm-project/issues/175990.