Remove cost model for vp_reverse

Author: Mel-Chen

llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp

@@ -1523,12 +1523,6 @@ RISCVTTIImpl::getIntrinsicInstrCost(const IntrinsicCostAttributes &ICA,
                           cast<VectorType>(ICA.getArgTypes()[0]), {}, CostKind,
                           0, cast<VectorType>(ICA.getReturnType()));
   }
-  case Intrinsic::experimental_vp_reverse: {
-    return getShuffleCost(TTI::SK_Reverse,
-                          cast<VectorType>(ICA.getReturnType()),
-                          cast<VectorType>(ICA.getArgTypes()[0]), {}, CostKind,
-                          0, cast<VectorType>(ICA.getReturnType()));
-  }
   case Intrinsic::fptoui_sat:
   case Intrinsic::fptosi_sat: {
     InstructionCost Cost = 0;