[llvm] [TTI][RISCV] Deduplicate type-based VP costing of VPReduction (PR #117708)

[via llvm-commits]

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@@ -1647,6 +1647,38 @@ class BasicTTIImplBase : public TargetTransformInfoImplCRTPBase<T> {
                                                UI->getPredicate(), CostKind);
           }
         }
+        if (VPReductionIntrinsic::isVPReduction(ICA.getID())) {
+          std::optional<Intrinsic::ID> RedID =
+              VPIntrinsic::getFunctionalIntrinsicIDForVP(ICA.getID());
+          assert(RedID.has_value());
+          switch (ICA.getID()) {
+          case Intrinsic::vp_reduce_add:
+          case Intrinsic::vp_reduce_fadd:
+          case Intrinsic::vp_reduce_mul:
+          case Intrinsic::vp_reduce_fmul:
+          case Intrinsic::vp_reduce_and:
+          case Intrinsic::vp_reduce_or:
+          case Intrinsic::vp_reduce_xor: {
+            unsigned RedOp = getArithmeticReductionInstruction(*RedID);
+            return thisT()->getArithmeticReductionCost(
+                RedOp, cast<VectorType>(ICA.getArgTypes()[1]), ICA.getFlags(),
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LiqinWeng wrote:

sorry， fixed

https://github.com/llvm/llvm-project/pull/117708