[llvm] [VPlan] Directly unroll VectorEndPointerRecipe (PR #172372)

[Luke Lau via llvm-commits]

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@@ -2858,7 +2886,7 @@ static VPRecipeBase *optimizeMaskToEVL(VPValue *HeaderMask,
 
   if (match(&CurRecipe,
             m_MaskedLoad(m_VPValue(EndPtr), m_RemoveMask(HeaderMask, Mask))) &&
-      match(EndPtr, m_VecEndPtr(m_VPValue(Addr), m_Specific(&Plan->getVF()))) &&
+      match(EndPtr, m_VecEndPtr(m_VPValue(Addr), m_VPValue())) &&
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lukel97 wrote:

You need to still match here for `-1 * (VF - 1)` otherwise it's not a correct transform. I guess you could add a helper matcher for that?

https://github.com/llvm/llvm-project/pull/172372