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

[Florian Hahn via llvm-commits]

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@@ -2992,10 +2992,19 @@ static VPRecipeBase *optimizeMaskToEVL(VPValue *HeaderMask,
 
   /// Adjust any end pointers so that they point to the end of EVL lanes not VF.
   auto AdjustEndPtr = [&CurRecipe, &EVL](VPValue *EndPtr) {
-    auto *EVLEndPtr = cast<VPVectorEndPointerRecipe>(EndPtr)->clone();
-    EVLEndPtr->insertBefore(&CurRecipe);
-    EVLEndPtr->setOperand(1, &EVL);
-    return EVLEndPtr;
+    auto *VEPR = cast<VPVectorEndPointerRecipe>(EndPtr);
+    VPBuilder Builder(&CurRecipe);
+    return Builder.createVectorEndPointerRecipe(
+        VEPR->getOperand(0), VEPR->getSourceElementType(), VEPR->getStride(),
+        VEPR->getGEPNoWrapFlags(), &EVL, VEPR->getDebugLoc());
+  };
+
+  auto m_VecEndPtrVF = [&Plan](VPValue *&Addr, int64_t Stride) { // NOLINT
+    return m_VecEndPtr(
+        m_VPValue(Addr),
+        m_c_Mul(
+            m_SpecificSInt(Stride),
+            m_Sub(m_ZExtOrTruncOrSelf(m_Specific(&Plan->getVF())), m_One())));
   };
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fhahn wrote:

Regressions over the baseline or earlier version of the patch?

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