5216   return isNullConstant(Elt) || isNullFPConstant(Elt);  in isZeroNode()
7402     if (!(Op->getOperand(i).isUndef() || isNullConstant(Op->getOperand(i))))  in isSplatZeroExtended()
7412     } else if (!(isNullConstant(Op->getOperand(i)) ||  in isSplatZeroExtended()
9666     if (CondElt.isUndef() || isNullConstant(CondElt))  in createShuffleMaskFromVSELECT()
16285          isNullConstant(Op.getOperand(1))) &&  in LowerEXTRACT_VECTOR_ELT_SSE4()
18972   if (isNullConstant(Op1))  in EmitCmp()
19698   if (isNullConstant(Op1)) {  in EmitKORTEST()
19728   if (Op0.getOpcode() == ISD::AND && Op0.hasOneUse() && isNullConstant(Op1) &&  in emitFlagsForSetcc()
19736   if (Op0.getOpcode() == ISD::OR && isNullConstant(Op1) &&  in emitFlagsForSetcc()
19748   if ((isOneConstant(Op1) || isNullConstant(Op1)) &&  in emitFlagsForSetcc()
19753       bool Invert = (CC == ISD::SETNE) ^ isNullConstant(Op1);  in emitFlagsForSetcc()
20032       isNullConstant(Cond.getOperand(1).getOperand(1))) {  in LowerSELECT()
20045       if (isNullConstant(Y) &&  in LowerSELECT()
20066       if (!isNullConstant(Op2))  in LowerSELECT()
20180         (isNullConstant(Op1) || isNullConstant(Op2))) {  in LowerSELECT()
20764         isNullConstant(Cond.getOperand(1)) &&  in LowerBRCOND()
22016       if (isNullConstant(Op.getOperand(1))) {  in LowerINTRINSIC_WO_CHAIN()
33210         AllUndefOrZero &= (Op.isUndef() || isNullConstant(Op));  in combineBitcast()
33232         isNullConstant(N0.getOperand(1))) {  in combineBitcast()
33774       VT == MVT::i64 && SrcVT == MVT::v1i64 && isNullConstant(EltIdx)) {  in combineExtractVectorElt()
33784       VT == MVT::i32 && SrcVT == MVT::v2i32 && isNullConstant(EltIdx)) {  in combineExtractVectorElt()
34256         isNullConstant(Cond.getOperand(1)) &&  in combineSelect()
34692     if (!isNullConstant(Cond->getOperand(1)))  in checkBoolTestAndOrSetCCCombine()
34951       Cond.getOpcode() == X86ISD::CMP && isNullConstant(Cond.getOperand(1))) {  in combineCMov()
36634            isNullConstant(N->getOperand(1).getOperand(1)) &&  in combineOrCmpEqZeroToCtlzSrl()
37399   bool LoadFirstElt = !isNullConstant(MaskBV->getOperand(0));  in combineMaskedLoadConstantMask()
37400   bool LoadLastElt = !isNullConstant(MaskBV->getOperand(NumElts - 1));  in combineMaskedLoadConstantMask()
39608         isNullConstant(V.getOperand(1))) {  in combineFMA()
39745   bool IsOrXorXorCCZero = isNullConstant(Y) && X.getOpcode() == ISD::OR &&  in combineVectorSizedSetCCEquality()
39748   if (isNullConstant(Y) && !IsOrXorXorCCZero)  in combineVectorSizedSetCCEquality()
39814     if (LHS.getOpcode() == ISD::SUB && isNullConstant(LHS.getOperand(0)) &&  in combineSetCC()
39821     if (RHS.getOpcode() == ISD::SUB && isNullConstant(RHS.getOperand(0)) &&  in combineSetCC()
40267   if (!isNullConstant(N->getOperand(1)))  in combineCMP()
41285     if (isNullConstant(Vec.getOperand(2))) {  in combineInsertSubvector()