[llvm] [LV] Vectorize selecting last IV of min/max element. (PR #141431)

[Florian Hahn via llvm-commits]

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@@ -818,15 +818,19 @@ void VPlanTransforms::addMinimumVectorEpilogueIterationCheck(
   Branch->setMetadata(LLVMContext::MD_prof, BranchWeights);
 }
 
-/// If \p RedPhiR is used by a ComputeReductionResult recipe, return it.
-/// Otherwise return nullptr.
-static VPInstruction *
-findComputeReductionResult(VPReductionPHIRecipe *RedPhiR) {
-  auto It = find_if(RedPhiR->users(), [](VPUser *U) {
-    auto *VPI = dyn_cast<VPInstruction>(U);
-    return VPI && VPI->getOpcode() == VPInstruction::ComputeReductionResult;
-  });
-  return It == RedPhiR->user_end() ? nullptr : cast<VPInstruction>(*It);
+/// If \p V is used by a recipe matching pattern \p P, return it. Otherwise
+/// return nullptr;
+template <typename MatchT>
+static VPRecipeBase *findUser(VPValue *V, const MatchT &P) {
+  auto It = find_if(V->users(), match_fn(P));
+  return It == V->user_end() ? nullptr : cast<VPRecipeBase>(*It);
+}
+
+/// If \p V is used by a VPInstruction with \p Opcode, return it. Otherwise
+/// return nullptr.
+template <unsigned Opcode>
+static VPInstruction *findUserVPInstruction(VPValue *V) {
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fhahn wrote:

Yep, updated , thanks

https://github.com/llvm/llvm-project/pull/141431