[llvm] [LV] Add support for partial alias masking with tail folding (PR #182457)

[Sander de Smalen via llvm-commits]

================
@@ -8682,6 +8747,49 @@ void LoopVectorizationPlanner::attachRuntimeChecks(
   }
 }
 
+void LoopVectorizationPlanner::materializeAliasMask(
----------------
sdesmalen-arm wrote:

nit: please give this a different name, e.g. `materializeAliasMaskCheckBlock` or something, to distinguish it from `VPlanTransforms::materializeAliasMask()`

https://github.com/llvm/llvm-project/pull/182457