1028   enum class ExtendKind { Zero, Sign, Unknown };  enumerator
1185     ExtendKindMap[OrigPhi] = WI.IsSigned ? ExtendKind::Sign : ExtendKind::Zero;  in WidenIV()
1238   bool IsSigned = getExtendKind(NarrowDef) == ExtendKind::Sign;  in cloneBitwiseIVUser()
1303   bool SignExtend = getExtendKind(NarrowDef) == ExtendKind::Sign;  in cloneArithmeticIVUser()
1375   if (ExtKind == ExtendKind::Sign && OBO->hasNoSignedWrap())  in getExtendedOperandRecurrence()
1427       ExtKind = ExtendKind::Sign;  in getWideRecurrence()
1432   } else if (getExtendKind(DU.NarrowDef) == ExtendKind::Sign) {  in getWideRecurrence()
1434     ExtKind = ExtendKind::Sign;  in getWideRecurrence()
1481   bool IsSigned = getExtendKind(DU.NarrowDef) == ExtendKind::Sign;  in widenLoopCompare()
1546   bool CanSignExtend = ExtKind == ExtendKind::Sign && OBO->hasNoSignedWrap();  in widenWithVariantUse()
1579       if (ExtKind == ExtendKind::Sign && ICmpInst::isUnsigned(Pred))  in widenWithVariantUse()
1584     if (ExtKind == ExtendKind::Sign)  in widenWithVariantUse()
1622     AnotherOpExtKind = ExtendKind::Sign;  in widenWithVariantUse()
1638                              AnotherOpExtKind == ExtendKind::Sign, NarrowUse);  in widenWithVariantUse()
1643                              AnotherOpExtKind == ExtendKind::Sign, NarrowUse);  in widenWithVariantUse()
1738     return DU.NeverNegative || getExtendKind(DU.NarrowDef) == ExtendKind::Sign;  in widenIVUse()
1885   const SCEV *WideIVExpr = getExtendKind(OrigPhi) == ExtendKind::Sign  in createWideIV()