[llvm] [LV] Make having flags (FMFs etc) not require inheriting VPSingleDefRecipe (PR #114972)

[Florian Hahn via llvm-commits]

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@@ -936,8 +936,9 @@ void VPlanTransforms::clearReductionWrapFlags(VPlan &Plan) {
       continue;
 
     for (VPUser *U : collectUsersRecursively(PhiR))
-      if (auto *RecWithFlags = dyn_cast<VPRecipeWithIRFlags>(U)) {
-        RecWithFlags->dropPoisonGeneratingFlags();
+      if (auto *R = dyn_cast<VPRecipeBase>(U)) {
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fhahn wrote:

Would be good to allow casting to VPRecipeWithIRFlags/VPIRFlags, as mentioned above 


https://github.com/llvm/llvm-project/pull/114972