Add assertions

Author: ElvisWang123

llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp

@@ -1011,8 +1011,8 @@ RISCVTTIImpl::getIntrinsicInstrCost(const IntrinsicCostAttributes &ICA,
   case Intrinsic::vp_frem: {
     std::optional<unsigned> FOp =
         VPIntrinsic::getFunctionalOpcodeForVP(ICA.getID());
-    if (FOp)
-      return getArithmeticInstrCost(*FOp, ICA.getReturnType(), CostKind);
+    assert(FOp.has_value());
+    return getArithmeticInstrCost(*FOp, ICA.getReturnType(), CostKind);
     break;
   }
   // vp int cast ops.
@@ -1028,9 +1028,9 @@ RISCVTTIImpl::getIntrinsicInstrCost(const IntrinsicCostAttributes &ICA,
   case Intrinsic::vp_fpext: {
     std::optional<unsigned> FOp =
         VPIntrinsic::getFunctionalOpcodeForVP(ICA.getID());
-    if (FOp && !ICA.getArgTypes().empty())
-      return getCastInstrCost(*FOp, RetTy, ICA.getArgTypes()[0],
-                              TTI::CastContextHint::None, CostKind);
+    assert(FOp.has_value() && !ICA.getArgTypes().empty());
+    return getCastInstrCost(*FOp, RetTy, ICA.getArgTypes()[0],
+                            TTI::CastContextHint::None, CostKind);
     break;
   }
   }