184   while (i != e && N->getOperand(i).isUndef())  in isConstantSplatVectorAllOnes()
213     if (N->getOperand(i) != NotZero && !N->getOperand(i).isUndef())  in isConstantSplatVectorAllOnes()
232     if (Op.isUndef())  in isConstantSplatVectorAllZeros()
273     if (Op.isUndef())  in isBuildVectorOfConstantSDNodes()
286     if (Op.isUndef())  in isBuildVectorOfConstantFPSDNodes()
300   return all_of(N->op_values(), [](SDValue Op) { return Op.isUndef(); });  in allOperandsUndef()
317     if (AllowUndefs && Op.getOperand(i).isUndef()) {  in matchUnaryPredicate()
352     bool LHSUndef = AllowUndefs && LHSOp.isUndef();  in matchBinaryPredicate()
353     bool RHSUndef = AllowUndefs && RHSOp.isUndef();  in matchBinaryPredicate()
1886   if (N1.isUndef() && N2.isUndef())  in getVectorShuffle()
1907   if (N1.isUndef())  in getVectorShuffle()
1943   bool N2Undef = N2.isUndef();  in getVectorShuffle()
1963   N2Undef = N2.isUndef();  in getVectorShuffle()
1965   if (N1.isUndef() && N2Undef)  in getVectorShuffle()
1991       if (Splat && Splat.isUndef())  in getVectorShuffle()
2349     if ((N1.isUndef() || N2.isUndef()) &&  in FoldSetCC()
2355     if (N1.isUndef() && N2.isUndef())  in FoldSetCC()
2433   } else if (N1CFP && OpVT.isSimple() && !N2.isUndef()) {  in FoldSetCC()
2440              (OpVT.isFloatingPoint() && (N1.isUndef() || N2.isUndef()))) {  in FoldSetCC()
2561     UndefElts = V.getOperand(0).isUndef()  in isSplatValue()
2606       if (Op.isUndef()) {  in isSplatValue()
4828   if (llvm::all_of(Ops, [](SDValue Op) { return Op.isUndef(); }))  in FoldBUILD_VECTOR()
4870   if (llvm::all_of(Ops, [](SDValue Op) { return Op.isUndef(); }))  in foldCONCAT_VECTORS()
4909     if (Op.isUndef())  in foldCONCAT_VECTORS()
4924       if (Op.isUndef())  in foldCONCAT_VECTORS()
5194     if (Operand.isUndef())  in getNode()
5199     if (Operand.isUndef())  in getNode()
5205     if (Operand.isUndef())  in getNode()
5531 bool SelectionDAG::isUndef(unsigned Opcode, ArrayRef<SDValue> Ops) {  in isUndef()  function in SelectionDAG
5541     if (Divisor.isUndef() || isNullConstant(Divisor))  in isUndef()
5546                         [](SDValue V) { return V.isUndef() ||  in isUndef()
5571   if (isUndef(Opcode, Ops))  in FoldConstantArithmetic()
5677     return Op.isUndef() || Op.getOpcode() == ISD::CONDCODE ||  in FoldConstantArithmetic()
5720         if (Op.isUndef())  in FoldConstantArithmetic()
5738         if (NewNodesMustHaveLegalTypes && !ScalarOp.isUndef() &&  in FoldConstantArithmetic()
5757     if (!ScalarResult.isUndef() && ScalarResult.getOpcode() != ISD::Constant &&  in FoldConstantArithmetic()
5824       if (N1C && N1C->getValueAPF().isNegZero() && N2.isUndef())  in foldConstantFPMath()
5834     if (N1.isUndef() && N2.isUndef())  in foldConstantFPMath()
5836     if (N1.isUndef() || N2.isUndef())  in foldConstantFPMath()
6119         if (Op.isUndef()) {  in getNode()
6153     if (N1.isUndef() || N2.isUndef())  in getNode()
6280     if (N1.isUndef())  in getNode()
6305   if (N1.isUndef()) {  in getNode()
6325   if (N2.isUndef()) {  in getNode()
6328       if (N1.isUndef())  in getNode()
6468     if (N3.isUndef())  in getNode()
6472     if (N2.isUndef())  in getNode()
6479     if (N1.isUndef() && N2.isUndef())  in getNode()
6509     if (N1.isUndef() && N2.getOpcode() == ISD::EXTRACT_SUBVECTOR &&  in getNode()
6587   assert(!Value.isUndef());  in getMemsetValue()
6755   if (Src.isUndef())  in getMemcpyLoadsAndStores()
6957   if (Src.isUndef())  in getMemmoveLoadsAndStores()
7071   if (Src.isUndef())  in getMemsetStores()
7745   if (OffsetOp.isUndef())  in InferPointerInfo()
7796   assert((Indexed || Offset.isUndef()) && "Unindexed load with an offset!");  in getLoad()
7864   assert(LD->getOffset().isUndef() && "Load is already a indexed load!");  in getIndexedLoad()
7997   assert(ST->getOffset().isUndef() && "Store is already a indexed store!");  in getIndexedStore()
8052   assert((Indexed || Offset.isUndef()) && "Unindexed load with an offset!");  in getLoadVP()
8127   assert(LD->getOffset().isUndef() && "Load is already a indexed load!");  in getIndexedLoadVP()
8146   assert((Indexed || Offset.isUndef()) && "Unindexed vp_store with an offset!");  in getStoreVP()
8249   assert(ST->getOffset().isUndef() && "Store is already an indexed store!");  in getIndexedStoreVP()
8303   assert((Indexed || Offset.isUndef()) && "Unindexed load with an offset!");  in getStridedLoadVP()
8378   assert(SLD->getOffset().isUndef() &&  in getIndexedStridedLoadVP()
8400   assert((Indexed || Offset.isUndef()) && "Unindexed vp_store with an offset!");  in getStridedStoreVP()
8501   assert(SST->getOffset().isUndef() &&  in getIndexedStridedStoreVP()
8622   assert((Indexed || Offset.isUndef()) &&  in getMaskedLoad()
8654   assert(LD->getOffset().isUndef() && "Masked load is already a indexed load!");  in getIndexedMaskedLoad()
8670   assert((Indexed || Offset.isUndef()) &&  in getMaskedStore()
8703   assert(ST->getOffset().isUndef() &&  in getIndexedMaskedStore()
8807   if (Cond.isUndef())  in simplifySelect()
8809   if (T.isUndef())  in simplifySelect()
8811   if (F.isUndef())  in simplifySelect()
8835   if (X.isUndef())  in simplifyShift()
8838   if (Y.isUndef())  in simplifyShift()
8869   if (Flags.hasNoNaNs() && (HasNan || X.isUndef() || Y.isUndef()))  in simplifyFPBinop()
8872   if (Flags.hasNoInfs() && (HasInf || X.isUndef() || Y.isUndef()))  in simplifyFPBinop()
11423     if (OpVal.isUndef())  in isConstantSplat()
11475     if (Op.isUndef()) {  in getSplatValue()
11487     assert(getOperand(FirstDemandedIdx).isUndef() &&  in getSplatValue()
11516       if (DemandedElts[I] && getOperand(I).isUndef())  in getRepeatedSequence()
11527       if (Op.isUndef()) {  in getRepeatedSequence()
11532       if (SeqOp && !SeqOp.isUndef() && SeqOp != Op) {  in getRepeatedSequence()
11613     if (Op.isUndef()) {  in getConstantRawBits()