[llvm] [VPlan] Split out VPBlendRecipe simplifications from simplifyRecipes. NFC (PR #134073)

[Ramkumar Ramachandra via llvm-commits]

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@@ -1092,6 +1024,85 @@ void VPlanTransforms::simplifyRecipes(VPlan &Plan, Type &CanonicalIVTy) {
   }
 }
 
+void VPlanTransforms::simplifyBlends(VPlan &Plan) {
+  using namespace llvm::VPlanPatternMatch;
+  ReversePostOrderTraversal<VPBlockDeepTraversalWrapper<VPBlockBase *>> RPOT(
+      Plan.getEntry());
+  SetVector<VPRecipeBase *> Worklist;
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artagnon wrote:

Worklist is dead?

https://github.com/llvm/llvm-project/pull/134073