[llvm] [VPlan] Remove VPVectorPointer for part 0 after unrolling. (PR #149735)

[Florian Hahn via llvm-commits]

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@@ -1835,6 +1835,8 @@ class VPVectorPointerRecipe : public VPRecipeWithIRFlags,
                                      getGEPNoWrapFlags(), getDebugLoc());
   }
 
+  bool isPart0() { return getUnrollPart(*this) == 0; }
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fhahn wrote:

Marked const and adjusted name, thanks. Also added a comment

https://github.com/llvm/llvm-project/pull/149735