1076   enum class ExtendKind { Zero, Sign, Unknown };  enum in __anonb324fb7f0311::WidenIV
1082   DenseMap<AssertingVH<Instruction>, ExtendKind> ExtendKindMap;
1151   ExtendKind getExtendKind(Instruction *I);
1153   using WidenedRecTy = std::pair<const SCEVAddRecExpr *, ExtendKind>;
1235     ExtendKindMap[OrigPhi] = WI.IsSigned ? ExtendKind::Sign : ExtendKind::Zero;  in WidenIV()
1288   bool IsSigned = getExtendKind(NarrowDef) == ExtendKind::Sign;  in cloneBitwiseIVUser()
1353   bool SignExtend = getExtendKind(NarrowDef) == ExtendKind::Sign;  in cloneArithmeticIVUser()
1379 WidenIV::ExtendKind WidenIV::getExtendKind(Instruction *I) {  in getExtendKind()
1481     return {nullptr, ExtendKind::Unknown};  in getExtendedOperandRecurrence()
1492   ExtendKind ExtKind = getExtendKind(DU.NarrowDef);  in getExtendedOperandRecurrence()
1493   if (!(ExtKind == ExtendKind::Sign && Op->IsNSW) &&  in getExtendedOperandRecurrence()
1494       !(ExtKind == ExtendKind::Zero && Op->IsNUW)) {  in getExtendedOperandRecurrence()
1495     ExtKind = ExtendKind::Unknown;  in getExtendedOperandRecurrence()
1503         ExtKind = ExtendKind::Sign;  in getExtendedOperandRecurrence()
1505         ExtKind = ExtendKind::Zero;  in getExtendedOperandRecurrence()
1511   if (ExtKind == ExtendKind::Sign)  in getExtendedOperandRecurrence()
1513   else if (ExtKind == ExtendKind::Zero)  in getExtendedOperandRecurrence()
1516     return {nullptr, ExtendKind::Unknown};  in getExtendedOperandRecurrence()
1534     return {nullptr, ExtendKind::Unknown};  in getExtendedOperandRecurrence()
1546     return {nullptr, ExtendKind::Unknown};  in getWideRecurrence()
1553     return {nullptr, ExtendKind::Unknown};  in getWideRecurrence()
1557   ExtendKind ExtKind;  in getWideRecurrence()
1561       ExtKind = ExtendKind::Sign;  in getWideRecurrence()
1564       ExtKind = ExtendKind::Zero;  in getWideRecurrence()
1566   } else if (getExtendKind(DU.NarrowDef) == ExtendKind::Sign) {  in getWideRecurrence()
1568     ExtKind = ExtendKind::Sign;  in getWideRecurrence()
1571     ExtKind = ExtendKind::Zero;  in getWideRecurrence()
1575     return {nullptr, ExtendKind::Unknown};  in getWideRecurrence()
1587   ExtendKind ExtKind = getExtendKind(DU.NarrowDef);  in truncateIVUse()
1591                           DU.NeverNegative || ExtKind == ExtendKind::Zero,  in truncateIVUse()
1592                           DU.NeverNegative || ExtKind == ExtendKind::Sign);  in truncateIVUse()
1618   bool IsSigned = getExtendKind(DU.NarrowDef) == ExtendKind::Sign;  in widenLoopCompare()
1678   ExtendKind ExtKind = getExtendKind(NarrowDef);  in widenWithVariantUse()
1679   bool CanSignExtend = ExtKind == ExtendKind::Sign && OBO->hasNoSignedWrap();  in widenWithVariantUse()
1680   bool CanZeroExtend = ExtKind == ExtendKind::Zero && OBO->hasNoUnsignedWrap();  in widenWithVariantUse()
1710       if (ExtKind == ExtendKind::Zero && ICmpInst::isSigned(Pred))  in widenWithVariantUse()
1712       if (ExtKind == ExtendKind::Sign && ICmpInst::isUnsigned(Pred))  in widenWithVariantUse()
1717     if (ExtKind == ExtendKind::Sign)  in widenWithVariantUse()
1740     if (ExtKind != ExtendKind::Zero)  in widenWithVariantUse()
1755     AnotherOpExtKind = ExtendKind::Sign;  in widenWithVariantUse()
1771                              AnotherOpExtKind == ExtendKind::Sign, NarrowUse);  in widenWithVariantUse()
1776                              AnotherOpExtKind == ExtendKind::Sign, NarrowUse);  in widenWithVariantUse()
1816       if (ExtKind == ExtendKind::Zero)  in widenWithVariantUse()
1844       DU.NeverNegative || getExtendKind(DU.NarrowDef) == ExtendKind::Sign;  in widenIVUse()
1846       DU.NeverNegative || getExtendKind(DU.NarrowDef) == ExtendKind::Zero;  in widenIVUse()
1927            (WideAddRec.second == ExtendKind::Unknown));  in widenIVUse()
2040   const SCEV *WideIVExpr = getExtendKind(OrigPhi) == ExtendKind::Sign  in createWideIV()