574 ConstantRange ConstantRange::unionWith(const ConstantRange &CR,  in unionWith()  function in ConstantRange
583     return CR.unionWith(*this, Type);  in unionWith()
765                          UpperDiv.trunc(DstTySize)).unionWith(Union);  in truncate()
773                            UpperDiv.trunc(DstTySize)).unionWith(Union);  in truncate()
1068     return Res.intersectWith(unionWith(Other, Signed), Signed);  in smax()
1082     return Res.intersectWith(unionWith(Other, Unsigned), Unsigned);  in umax()
1096     return Res.intersectWith(unionWith(Other, Signed), Signed);  in smin()
1110     return Res.intersectWith(unionWith(Other, Unsigned), Unsigned);  in umin()
1174         PosRes = PosRes.unionWith(  in sdiv()
1189         PosRes = PosRes.unionWith(  in sdiv()
1194       PosRes = PosRes.unionWith(  in sdiv()
1207     NegRes = NegRes.unionWith(  in sdiv()
1212   ConstantRange Res = NegRes.unionWith(PosRes, PreferredRangeType::Signed);  in sdiv()
1216     Res = Res.unionWith(ConstantRange(Zero));  in sdiv()
1715     CR = CR.unionWith(ConstantRange(Low->getValue(), High->getValue()));  in getConstantRangeFromMetadata()