1048   enum class ExtendKind { Zero, Sign, Unknown };  enumerator
1205     ExtendKindMap[OrigPhi] = WI.IsSigned ? ExtendKind::Sign : ExtendKind::Zero;  in WidenIV()
1258   bool IsSigned = getExtendKind(NarrowDef) == ExtendKind::Sign;  in cloneBitwiseIVUser()
1323   bool SignExtend = getExtendKind(NarrowDef) == ExtendKind::Sign;  in cloneArithmeticIVUser()
1394   if (!(ExtKind == ExtendKind::Sign && OBO->hasNoSignedWrap()) &&  in getExtendedOperandRecurrence()
1404         ExtKind = ExtendKind::Sign;  in getExtendedOperandRecurrence()
1413   if (ExtKind == ExtendKind::Sign)  in getExtendedOperandRecurrence()
1463       ExtKind = ExtendKind::Sign;  in getWideRecurrence()
1468   } else if (getExtendKind(DU.NarrowDef) == ExtendKind::Sign) {  in getWideRecurrence()
1470     ExtKind = ExtendKind::Sign;  in getWideRecurrence()
1517   bool IsSigned = getExtendKind(DU.NarrowDef) == ExtendKind::Sign;  in widenLoopCompare()
1578   bool CanSignExtend = ExtKind == ExtendKind::Sign && OBO->hasNoSignedWrap();  in widenWithVariantUse()
1611       if (ExtKind == ExtendKind::Sign && ICmpInst::isUnsigned(Pred))  in widenWithVariantUse()
1616     if (ExtKind == ExtendKind::Sign)  in widenWithVariantUse()
1654     AnotherOpExtKind = ExtendKind::Sign;  in widenWithVariantUse()
1670                              AnotherOpExtKind == ExtendKind::Sign, NarrowUse);  in widenWithVariantUse()
1675                              AnotherOpExtKind == ExtendKind::Sign, NarrowUse);  in widenWithVariantUse()
1772     return DU.NeverNegative || getExtendKind(DU.NarrowDef) == ExtendKind::Sign;  in widenIVUse()
1924   const SCEV *WideIVExpr = getExtendKind(OrigPhi) == ExtendKind::Sign  in createWideIV()