6251   return isNullConstant(Elt) || isNullFPConstant(Elt);  in isZeroNode()
6517             isNullConstant(Src.getOperand(2))) {  in collectConcatOps()
6524             Sub.getOperand(0) == Src && isNullConstant(Sub.getOperand(1))) {  in collectConcatOps()
6984       (isNullConstant(V.getOperand(1)) || V.getOperand(0).hasOneUse())) {  in IsNOT()
8567           !isNullConstant(Src.getOperand(1)) ||  in getFauxShuffleMask()
9589           return !V || V.isUndef() || isNullConstant(V);  in lowerBuildVectorAsBroadcast()
19635     if (llvm::isNullConstant(Idx) && !X86::mayFoldIntoZeroExtend(Op) &&  in LowerEXTRACT_VECTOR_ELT_SSE4()
19656     if ((User->getOpcode() != ISD::STORE || isNullConstant(Idx)) &&  in LowerEXTRACT_VECTOR_ELT_SSE4()
20793   if (!isNullConstant(Extract.getOperand(1))) {  in vectorizeExtractedCast()
23740   if (isNullConstant(Op1))  in EmitCmp()
23790   if (Op0.getOpcode() == ISD::SUB && isNullConstant(Op0.getOperand(0)) &&  in EmitCmp()
23799   if (Op1.getOpcode() == ISD::SUB && isNullConstant(Op1.getOperand(0)) &&  in EmitCmp()
24723   if (isNullConstant(Op1)) {  in EmitAVX512Test()
24737   if (!isNullConstant(Op1))  in EmitAVX512Test()
24768   if (Op0.getOpcode() == ISD::AND && Op0.hasOneUse() && isNullConstant(Op1) &&  in emitFlagsForSetcc()
24779   if (isNullConstant(Op1) && (CC == ISD::SETEQ || CC == ISD::SETNE))  in emitFlagsForSetcc()
24790   if ((isOneConstant(Op1) || isNullConstant(Op1)) &&  in emitFlagsForSetcc()
24795       bool Invert = (CC == ISD::SETNE) ^ isNullConstant(Op1);  in emitFlagsForSetcc()
25135       isNullConstant(Cond.getOperand(1).getOperand(1))) {  in LowerSELECT()
25213     } else if ((VT == MVT::i32 || VT == MVT::i64) && isNullConstant(Op2) &&  in LowerSELECT()
25298         (isNullConstant(Op1) || isNullConstant(Op2))) {  in LowerSELECT()
25805         (isNullConstant(RHS) || isOneConstant(RHS))) {  in LowerBRCOND()
25810       if ((CC == ISD::SETEQ) == isNullConstant(RHS))  in LowerBRCOND()
27081       if (isNullConstant(Op.getOperand(1))) {  in LowerINTRINSIC_WO_CHAIN()
31686   if (Opc == ISD::ATOMIC_LOAD_OR && isNullConstant(RHS)) {  in lowerAtomicArith()
39094              !isNullConstant(Op.getOperand(1))) {  in combineX86ShufflesRecursively()
39924         isNullConstant(Src.getOperand(1)) &&  in combineTargetShuffle()
40158           isNullConstant(V.getOperand(2))) {  in combineTargetShuffle()
42700       isNullConstant(N0.getOperand(1)))  in combineBitcast()
42757         AllUndefOrZero &= (Op.isUndef() || isNullConstant(Op));  in combineBitcast()
42779         isNullConstant(N0.getOperand(1))) {  in combineBitcast()
43604   if (!Vec.hasOneUse() || !isNullConstant(Index) || VecVT.getScalarType() != VT)  in scalarizeExtEltFP()
43709   assert(isNullConstant(Index) &&  in combineArithReduction()
43941       VT == MVT::i64 && SrcVT == MVT::v1i64 && isNullConstant(EltIdx)) {  in combineExtractVectorElt()
43951       VT == MVT::i32 && SrcVT == MVT::v2i32 && isNullConstant(EltIdx)) {  in combineExtractVectorElt()
44328       Cond.getOpcode() == ISD::SETCC && isNullConstant(Cond.getOperand(1))) {  in combineSelectOfTwoConstants()
44761         isNullConstant(Cond.getOperand(1)) &&  in combineSelect()
44794              isNullConstant(Op.getOperand(1)) &&  in combineSelect()
44850       if ((CC == ISD::SETGT && (isNullConstant(RHS) || isOneConstant(RHS))) ||  in combineSelect()
45292     if (!isNullConstant(Cond->getOperand(1)))  in checkBoolTestAndOrSetCCCombine()
45952       Cond.getOpcode() == X86ISD::CMP && isNullConstant(Cond.getOperand(1))) {  in combineCMov()
48282            isNullConstant(N->getOperand(1).getOperand(1)) &&  in combineOrCmpEqZeroToCtlzSrl()
49185   bool LoadFirstElt = !isNullConstant(MaskBV->getOperand(0));  in combineMaskedLoadConstantMask()
49186   bool LoadLastElt = !isNullConstant(MaskBV->getOperand(NumElts - 1));  in combineMaskedLoadConstantMask()
49497           isNullConstant(V.getOperand(1)) && V.hasOneUse() &&  in combineStore()
49687         llvm::isNullConstant(Op.getOperand(1))) {  in isHorizontalBinOp()
51760         isNullConstant(V.getOperand(1))) {  in combineFMA()
51944   bool IsOrXorXorTreeCCZero = isNullConstant(Y) && isOrXorXorTree(X);  in combineVectorSizedSetCCEquality()
51945   if (isNullConstant(Y) && !IsOrXorXorTreeCCZero)  in combineVectorSizedSetCCEquality()
52088     if (VT == MVT::i1 && isNullConstant(RHS)) {  in combineSetCC()
52139           isNullConstant(RHS) && !DCI.isBeforeLegalize()) {  in combineSetCC()
52590       !isNullConstant(ExtElt.getOperand(1)))  in combineToFPTruncExtElt()
53053   if (!isNullConstant(N->getOperand(1)))  in combineCMP()
53213   if (LHS.getOpcode() == ISD::SUB && isNullConstant(RHS) &&  in combineSBB()
53585     return isNullConstant(V.getOperand(0)) || isNullConstant(V.getOperand(1)) ||  in pushAddIntoCmovOfConsts()
53709   if (Cond.getOpcode() != X86ISD::SUB || !isNullConstant(Cond.getOperand(0)))  in combineSubABS()
54225         isNullConstant(SubVec.getOperand(1)) &&  in combineINSERT_SUBVECTOR()
54228       if (isNullConstant(Ins.getOperand(2)) &&  in combineINSERT_SUBVECTOR()