Address review comment

Author: david-arm

llvm/include/llvm/CodeGen/BasicTTIImpl.h

@@ -2388,8 +2388,7 @@ class BasicTTIImplBase : public TargetTransformInfoImplCRTPBase<T> {
       // operation.
       Type *ExpRetTy =
           VectorType::get(ArgTy, cast<VectorType>(RetTy)->getElementCount());
-      IntrinsicCostAttributes Attrs(Intrinsic::uadd_sat, ExpRetTy, {},
-                                    FastMathFlags());
+      IntrinsicCostAttributes Attrs(Intrinsic::uadd_sat, ExpRetTy, {}, FMF);
       InstructionCost Cost =
           thisT()->getTypeBasedIntrinsicInstrCost(Attrs, CostKind);
       Cost += thisT()->getCmpSelInstrCost(BinaryOperator::ICmp, ExpRetTy, RetTy,