947   enum ExtendKind { ZeroExtended, SignExtended, Unknown };  enumerator
992     ExtendKindMap[OrigPhi] = WI.IsSigned ? SignExtended : ZeroExtended;  in WidenIV()
1078   bool IsSigned = getExtendKind(NarrowDef) == SignExtended;  in cloneBitwiseIVUser()
1163   bool SignExtend = getExtendKind(NarrowDef) == SignExtended;  in cloneArithmeticIVUser()
1230   if (ExtKind == SignExtended && OBO->hasNoSignedWrap())  in getExtendedOperandRecurrence()
1282       ExtKind = SignExtended;  in getWideRecurrence()
1287   } else if (getExtendKind(DU.NarrowDef) == SignExtended) {  in getWideRecurrence()
1289     ExtKind = SignExtended;  in getWideRecurrence()
1333   bool IsSigned = getExtendKind(DU.NarrowDef) == SignExtended;  in widenLoopCompare()
1390   if (ExtKind == SignExtended && OBO->hasNoSignedWrap())  in widenWithVariantLoadUse()
1411   if (ExtKind == SignExtended) {  in widenWithVariantLoadUse()
1419   if (ExtKind == SignExtended) {  in widenWithVariantLoadUse()
1464   if (ExtKind == SignExtended)  in widenWithVariantLoadUseCodegen()
1465     ExtendKindMap[NarrowUse] = SignExtended;  in widenWithVariantLoadUseCodegen()
1470   if (ExtKind == SignExtended) {  in widenWithVariantLoadUseCodegen()
1534     return DU.NeverNegative || getExtendKind(DU.NarrowDef) == SignExtended;  in widenIVUse()
1682   const SCEV *WideIVExpr = getExtendKind(OrigPhi) == SignExtended  in createWideIV()