Intro m_Reverse

Author: Mel-Chen

llvm/lib/Transforms/Vectorize/VPlanPatternMatch.h

@@ -454,6 +454,12 @@ m_LastActiveLane(const Op0_t &Op0) {
   return m_VPInstruction<VPInstruction::LastActiveLane>(Op0);
 }
 
+template <typename Op0_t>
+inline VPInstruction_match<VPInstruction::Reverse, Op0_t>
+m_Reverse(const Op0_t &Op0) {
+  return m_VPInstruction<VPInstruction::Reverse>(Op0);
+}
+
 inline VPInstruction_match<VPInstruction::StepVector> m_StepVector() {
   return m_VPInstruction<VPInstruction::StepVector>();
 }

llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp

@@ -2891,7 +2891,7 @@ static void transformRecipestoEVLRecipes(VPlan &Plan, VPValue &EVL) {
 
       // TODO: Only convert reverse to vp.reverse if it uses the result of
       // vp.load, or defines the stored value of vp.store.
-      if (match(&R, m_VPInstruction<VPInstruction::Reverse>(m_VPValue(V1)))) {
+      if (match(&R, m_Reverse(m_VPValue(V1)))) {
         NewRecipe = new VPWidenIntrinsicRecipe(
             Intrinsic::experimental_vp_reverse, {V1, Plan.getTrue(), &EVL},
             TypeInfo.inferScalarType(R.getVPSingleValue()), {}, {},