4722         isNullConstant(BitcastOp->getOperand(0)))  in isFloatingPointZero()
4841   if (isNullConstant(RHS)) {  in getARMCmp()
5432     if (isNullConstant(LowerSatConstant)) {  in LowerSELECT_CC()
5756   if (LHS.getResNo() == 1 && (isOneConstant(RHS) || isNullConstant(RHS)) &&  in LowerBR_CC()
10243            isNullConstant(N->getOperand(0))));  in isZeroVector()
12486   return AllOnes ? isAllOnesConstant(N) : isNullConstant(N);  in isZeroOrAllOnes()
13085   if (!isNullConstant(UmlalNode->getOperand(3)))  in AddCombineTo64bitUMAAL()
13088   if ((isNullConstant(AddeNode->getOperand(0)) &&  in AddCombineTo64bitUMAAL()
13091        isNullConstant(AddeNode->getOperand(1)))) {  in AddCombineTo64bitUMAAL()
13119       isNullConstant(AddeNode->getOperand(0)) &&  in PerformUMLALCombine()
13120       isNullConstant(AddeNode->getOperand(1)) &&  in PerformUMLALCombine()
13140         isNullConstant(LHS->getOperand(0)) &&  in PerformAddcSubcCombine()
13141         isNullConstant(LHS->getOperand(1)) && isOneConstant(RHS)) {  in PerformAddcSubcCombine()
14041   if (N->getValueType(0) != MVT::i32 || !isNullConstant(N->getOperand(0)))  in PerformSubCSINCCombine()
14183         isNullConstant(Mask->getOperand(1)) &&  in PerformMVEVMULLCombine()
14185         isNullConstant(Mask->getOperand(3)))  in PerformMVEVMULLCombine()
14973   if (Cmp->getOpcode() != ARMISD::CMPZ || !isNullConstant(Cmp->getOperand(1)))  in IsCMPZCSINC()
14986       isNullConstant(CSInc.getOperand(0)) &&  in IsCMPZCSINC()
14987       isNullConstant(CSInc.getOperand(1)) && CSInc->hasOneUse()) {  in IsCMPZCSINC()
14992       isNullConstant(CSInc.getOperand(1)) && CSInc->hasOneUse()) {  in IsCMPZCSINC()
14997       isNullConstant(CSInc.getOperand(0)) && CSInc->hasOneUse()) {  in IsCMPZCSINC()
18085   if (!isNullConstant(CmpZ->getOperand(1)))  in PerformCMOVToBFICombine()
18345       isNullConstant(LHS->getOperand(0)->getOperand(0)) &&  in PerformBRCONDCombine()
18347       isOneConstant(LHS->getOperand(1)) && isNullConstant(RHS)) {  in PerformBRCONDCombine()
18411       isNullConstant(LHS->getOperand(0)) && isOneConstant(LHS->getOperand(1)) &&  in PerformCMOVCombine()
18412       isNullConstant(RHS)) {  in PerformCMOVCombine()
18439   if (isNullConstant(FalseVal)) {  in PerformCMOVCombine()
18468     } else if (CC == ARMCC::NE && !isNullConstant(RHS) &&  in PerformCMOVCombine()
18480   } else if (isNullConstant(TrueVal)) {  in PerformCMOVCombine()
18481     if (CC == ARMCC::EQ && !isNullConstant(RHS) &&  in PerformCMOVCombine()
18514        (FalseVal == LHS && isNullConstant(RHS))) &&  in PerformCMOVCombine()
20071       if (Op->getOpcode() == ARMISD::ADDE && isNullConstant(LHS) &&  in computeKnownBitsForTargetNode()
20072           isNullConstant(RHS)) {  in computeKnownBitsForTargetNode()