4680         isNullConstant(BitcastOp->getOperand(0)))  in isFloatingPointZero()
4801   if (isNullConstant(RHS)) {  in getARMCmp()
5392     if (isNullConstant(LowerSatConstant)) {  in LowerSELECT_CC()
5716   if (LHS.getResNo() == 1 && (isOneConstant(RHS) || isNullConstant(RHS)) &&  in LowerBR_CC()
10101            isNullConstant(N->getOperand(0))));  in isZeroVector()
12263   return AllOnes ? isAllOnesConstant(N) : isNullConstant(N);  in isZeroOrAllOnes()
12862   if (!isNullConstant(UmlalNode->getOperand(3)))  in AddCombineTo64bitUMAAL()
12865   if ((isNullConstant(AddeNode->getOperand(0)) &&  in AddCombineTo64bitUMAAL()
12868        isNullConstant(AddeNode->getOperand(1)))) {  in AddCombineTo64bitUMAAL()
12896       isNullConstant(AddeNode->getOperand(0)) &&  in PerformUMLALCombine()
12897       isNullConstant(AddeNode->getOperand(1)) &&  in PerformUMLALCombine()
12917         isNullConstant(LHS->getOperand(0)) &&  in PerformAddcSubcCombine()
12918         isNullConstant(LHS->getOperand(1)) && isOneConstant(RHS)) {  in PerformAddcSubcCombine()
13812   if (N->getValueType(0) != MVT::i32 || !isNullConstant(N->getOperand(0)))  in PerformSubCSINCCombine()
13954         isNullConstant(Mask->getOperand(1)) &&  in PerformMVEVMULLCombine()
13956         isNullConstant(Mask->getOperand(3)))  in PerformMVEVMULLCombine()
14745   if (Cmp->getOpcode() != ARMISD::CMPZ || !isNullConstant(Cmp->getOperand(1)))  in IsCMPZCSINC()
14758       isNullConstant(CSInc.getOperand(0)) &&  in IsCMPZCSINC()
14759       isNullConstant(CSInc.getOperand(1)) && CSInc->hasOneUse()) {  in IsCMPZCSINC()
14764       isNullConstant(CSInc.getOperand(1)) && CSInc->hasOneUse()) {  in IsCMPZCSINC()
14769       isNullConstant(CSInc.getOperand(0)) && CSInc->hasOneUse()) {  in IsCMPZCSINC()
17797   if (!isNullConstant(CmpZ->getOperand(1)))  in PerformCMOVToBFICombine()
18164   if (isNullConstant(FalseVal)) {  in PerformCMOVCombine()
18193     } else if (CC == ARMCC::NE && !isNullConstant(RHS) &&  in PerformCMOVCombine()
18205   } else if (isNullConstant(TrueVal)) {  in PerformCMOVCombine()
18206     if (CC == ARMCC::EQ && !isNullConstant(RHS) &&  in PerformCMOVCombine()
18239        (FalseVal == LHS && isNullConstant(RHS))) &&  in PerformCMOVCombine()
19792       if (Op->getOpcode() == ARMISD::ADDE && isNullConstant(LHS) &&  in computeKnownBitsForTargetNode()
19793           isNullConstant(RHS)) {  in computeKnownBitsForTargetNode()