2646   if (CC != ISD::SETEQ || !isNullConstant(SetCC.getOperand(1)) ||  in foldAddSubBoolOfMaskedVal()
2750   if (isNullConstant(N1))  in visitADDLike()
3054   if (isNullConstant(N1))  in visitADDSAT()
3217   if (N1.getOpcode() == ISD::UADDO_CARRY && isNullConstant(N1.getOperand(1)) &&  in visitADDLikeCommutative()
3250   if (isNullConstant(N1))  in visitADDC()
3363   if (N1.getOpcode() == ISD::UADDO_CARRY && isNullConstant(N1.getOperand(1))) {  in visitUADDOLike()
3412   if (isNullConstant(CarryIn)) {  in visitUADDO_CARRY()
3419   if (isNullConstant(N0) && isNullConstant(N1)) {  in visitUADDO_CARRY()
3487       isNullConstant(Carry0.getOperand(1))) {  in combineUADDO_CARRYDiamond()
3654       isNullConstant(N1) && !N->hasAnyUseOfValue(1))  in visitUADDO_CARRYLike()
3699   if (isNullConstant(CarryIn)) {  in visitSADDO_CARRY()
3882           isNullConstant(N1S.getOperand(0)))  in visitSUB()
4132   if (N0.getOpcode() == ISD::USUBO_CARRY && isNullConstant(N0.getOperand(1)) &&  in visitSUB()
4212   if (isNullConstant(N1))  in visitSUBSAT()
4239   if (isNullConstant(N1))  in visitSUBC()
4312   if (isNullConstant(CarryIn)) {  in visitUSUBO_CARRY()
4327   if (isNullConstant(CarryIn)) {  in visitSSUBO_CARRY()
4354   if (isNullConstant(N1))  in visitMULFIX()
5113   if (isNullConstant(N1))  in visitMULHS()
5173   if (isNullConstant(N1))  in visitMULHU()
5420   if (isNullConstant(N1)) {  in visitUMUL_LOHI()
6011       ((isNullConstant(LR) && isAllOnesConstant(RR)) ||  in foldLogicOfSetCCs()
6012        (isAllOnesConstant(LR) && isNullConstant(RR)))) {  in foldLogicOfSetCCs()
6337   if (!isNullConstant(F))  in combineSelectAsExtAnd()
7925   if (isNullConstant(N1))  in visitOR()
9410   if (isNullConstant(N1))  in visitXOR()
9513       isNullConstant(N0.getOperand(0))) {  in visitXOR()
11765   if (!isNullConstant(BasePtr) && !Index.hasOneUse())  in refineUniformBase()
11771       SplatVal && !isNullConstant(SplatVal) &&  in refineUniformBase()
12455       isNullConstant(N1))  in visitSELECT_CC()
12635   if (isNullConstant(Carry))  in visitSETCCCARRY()
18144   if (isNullConstant(Offset))  in CombineToPreIndexedLoadStore()
18341   if (isNullConstant(Offset))  in shouldCombineToPostInc()
21744         isNullConstant(InVal.getOperand(1)))  in visitINSERT_VECTOR_ELT()
21874       if (!LegalOperations && llvm::isNullConstant(InVal) &&  in visitINSERT_VECTOR_ELT()
22249         isNullConstant(Elt)) {  in visitEXTRACT_VECTOR_ELT()
22990     if (isNullConstant(Op) || isNullFPConstant(Op)) {  in reduceBuildVecToShuffle()
26142     if (isNullConstant(N2) &&  in visitINSERT_SUBVECTOR()
26204       N1.getOperand(0).isUndef() && isNullConstant(N1.getOperand(2)) &&  in visitINSERT_SUBVECTOR()
26205       isNullConstant(N2))  in visitINSERT_SUBVECTOR()
26402     AreAllEltsDisabled |= isNullConstant(N->getOperand(*EVLIdx));  in visitVPOp()
27051   if (!isNullConstant(N3) || !XType.bitsGE(AType))  in foldSelectCCToShiftAnd()
27060     if (!(isAllOnesConstant(N1) || (isNullConstant(N1) && N0 == N2)))  in foldSelectCCToShiftAnd()
27065     if (!(isNullConstant(N1) || (isOneConstant(N1) && N0 == N2)))  in foldSelectCCToShiftAnd()
27304       N0->getValueType(0) == VT && isNullConstant(N1) && isNullConstant(N2)) {  in SimplifySelectCC()
27330   bool Fold = N2C && isNullConstant(N3) && N2C->getAPIntValue().isPowerOf2();  in SimplifySelectCC()
27331   bool Swap = N3C && isNullConstant(N2) && N3C->getAPIntValue().isPowerOf2();  in SimplifySelectCC()