2224   if (isIntEqualitySetCC(CC) && isNullConstant(RHS) &&  in translateSetCCForBranch()
4024   if (isOneConstant(VL) && isNullConstant(Scalar))  in lowerScalarSplat()
4045       isNullConstant(Scalar.getOperand(1))) {  in lowerScalarInsert()
7080     if (isNullConstant(TrueV)) {  in combineSelectToBinOp()
7086     if (isNullConstant(FalseV)) {  in combineSelectToBinOp()
7204     if (isNullConstant(FalseV))  in lowerSELECT()
7207     if (isNullConstant(TrueV))  in lowerSELECT()
7989     if (isNullConstant(Idx)) {  in lowerINSERT_VECTOR_ELT()
8016     if (isNullConstant(Idx)) {  in lowerINSERT_VECTOR_ELT()
8086     if (isNullConstant(Idx)) {  in lowerEXTRACT_VECTOR_ELT()
8209   if (!isNullConstant(Idx)) {  in lowerEXTRACT_VECTOR_ELT()
8767     if (IsUnmasked && isNullConstant(Stride)) {  in LowerINTRINSIC_W_CHAIN()
11866     if (!isNullConstant(Idx)) {  in ReplaceNodeResults()
12165       isNullConstant(ReduceVec.getOperand(1)) &&  in combineBinOpOfExtractToReduceTree()
12217            isNullConstant(V.getOperand(1)) &&  in combineBinOpToReduce()
12243       isNullConstant(ScalarV.getOperand(2)))  in combineBinOpToReduce()
12377     return AllOnes ? isAllOnesConstant(N) : isNullConstant(N);  in combineSelectAndUse()
12582   if (isNullConstant(N0) && N1.getOpcode() == ISD::SETCC && N1.hasOneUse() &&  in performSUBCombine()
12583       isNullConstant(N1.getOperand(1))) {  in performSUBCombine()
14419   } else if (CCVal == ISD::SETLT && isNullConstant(Setcc.getOperand(0))) {  in tryDemorganOfBooleanCondition()
14444   if (isNullConstant(RHS) && (CCVal == ISD::SETGE || CCVal == ISD::SETLT) &&  in combine_CC()
14455   if (LHS.getOpcode() == ISD::SETCC && isNullConstant(RHS) &&  in combine_CC()
14473   if (LHS.getOpcode() == ISD::XOR && isNullConstant(RHS)) {  in combine_CC()
14480   if (isNullConstant(RHS) && LHS.getOpcode() == ISD::SRL && LHS.hasOneUse() &&  in combine_CC()
14512   if (isNullConstant(RHS)) {  in combine_CC()
14590   if (!isNullConstant(Cond->getOperand(1)))  in foldSelectOfCTTZOrCTLZ()
14614   if (!isNullConstant(ValOnZero))  in foldSelectOfCTTZOrCTLZ()
14658         isa<ConstantSDNode>(LHS.getOperand(1)) && isNullConstant(RHS)) {  in useInversedSetcc()
15412         isa<ConstantSDNode>(FalseV) && isNullConstant(RHS) &&  in PerformDAGCombine()
15456       if (isNullConstant(TrueV)) {  in PerformDAGCombine()
15463       if (isNullConstant(FalseV)) {  in PerformDAGCombine()
15474           isNullConstant(RHS)) {  in PerformDAGCombine()
15869          isNullConstant(Val.getOperand(1)))) {  in PerformDAGCombine()
15952         isNullConstant(Src.getOperand(1)) &&  in PerformDAGCombine()
16058       if (!isNullConstant(VL))  in PerformDAGCombine()
19286       if (isNullConstant(Op))  in LowerAsmOperandForConstraint()