1968   if (CC != ISD::SETEQ || !isNullConstant(SetCC.getOperand(1)) ||  in foldAddSubBoolOfMaskedVal()
2057   if (isNullConstant(N1))  in visitADD()
2211   if (isNullConstant(N1))  in visitADDSAT()
2302   if (N1.getOpcode() == ISD::ADDCARRY && isNullConstant(N1.getOperand(1)) &&  in visitADDLike()
2335   if (isNullConstant(N1))  in visitADDC()
2401   if (isNullConstant(N1))  in visitUADDO()
2432   if (N1.getOpcode() == ISD::ADDCARRY && isNullConstant(N1.getOperand(1))) {  in visitUADDOLike()
2481   if (isNullConstant(CarryIn)) {  in visitADDCARRY()
2490   if (isNullConstant(N0) && isNullConstant(N1)) {  in visitADDCARRY()
2500   if (isBitwiseNot(N0) && isNullConstant(N1) &&  in visitADDCARRY()
2524       isNullConstant(N1) && !N->hasAnyUseOfValue(1))  in visitADDCARRYLike()
2551         isNullConstant(CarryIn.getOperand(1)) &&  in visitADDCARRYLike()
2815   if (isNullConstant(N1))  in visitSUBSAT()
2838   if (isNullConstant(N1))  in visitSUBC()
2870   if (isNullConstant(N1))  in visitUSUBO()
2899   if (isNullConstant(CarryIn)) {  in visitSUBCARRY()
3556   if (isNullConstant(N1))  in visitMULHS()
3603   if (isNullConstant(N1))  in visitMULHU()
4056       ((isNullConstant(LR) && isAllOnesConstant(RR)) ||  in foldLogicOfSetCCs()
4057        (isAllOnesConstant(LR) && isNullConstant(RR)))) {  in foldLogicOfSetCCs()
5264   if (isNullConstant(N1))  in visitOR()
6156   if (isNullConstant(N1))  in visitXOR()
7380   if (VT == VT0 && VT == MVT::i1 && isNullConstant(N1)) {  in visitSELECT()
7393   if (VT == VT0 && VT == MVT::i1 && (N0 == N2 || isNullConstant(N2)))  in visitSELECT()
8134   if (isNullConstant(Carry))  in visitSETCCCARRY()
12637   if (isNullConstant(Offset))  in CombineToPreIndexedLoadStore()
12852       if (isNullConstant(Offset))  in CombineToPostIndexedLoadStore()
16312     if (isNullConstant(Op) || isNullFPConstant(Op)) {  in reduceBuildVecToShuffle()
18008       N1.getOperand(0).isUndef() && isNullConstant(N1.getOperand(2)))  in visitINSERT_SUBVECTOR()
18434   if (!isNullConstant(N3) || !XType.bitsGE(AType))  in foldSelectCCToShiftAnd()
18443     if (!(isAllOnesConstant(N1) || (isNullConstant(N1) && N0 == N2)))  in foldSelectCCToShiftAnd()
18448     if (!(isNullConstant(N1) || (isOneConstant(N1) && N0 == N2)))  in foldSelectCCToShiftAnd()
18586       N0->getValueType(0) == VT && isNullConstant(N1) && isNullConstant(N2)) {  in SimplifySelectCC()
18609   bool Fold = N2C && isNullConstant(N3) && N2C->getAPIntValue().isPowerOf2();  in SimplifySelectCC()
18610   bool Swap = N3C && isNullConstant(N2) && N3C->getAPIntValue().isPowerOf2();  in SimplifySelectCC()