193   while (i != e && N->getOperand(i).isUndef())  in isConstantSplatVectorAllOnes()
222     if (N->getOperand(i) != NotZero && !N->getOperand(i).isUndef())  in isConstantSplatVectorAllOnes()
241     if (Op.isUndef())  in isConstantSplatVectorAllZeros()
282     if (Op.isUndef())  in isBuildVectorOfConstantSDNodes()
295     if (Op.isUndef())  in isBuildVectorOfConstantFPSDNodes()
325     if (Op.isUndef())  in isVectorShrinkable()
346   return all_of(N->op_values(), [](SDValue Op) { return Op.isUndef(); });  in allOperandsUndef()
350   return N->getOpcode() == ISD::FREEZE && N->getOperand(0).isUndef();  in isFreezeUndef()
368     if (AllowUndefs && Op.getOperand(i).isUndef()) {  in matchUnaryPredicateImpl()
408     bool LHSUndef = AllowUndefs && LHSOp.isUndef();  in matchBinaryPredicate()
409     bool RHSUndef = AllowUndefs && RHSOp.isUndef();  in matchBinaryPredicate()
2056   if (N1.isUndef() && N2.isUndef())  in getVectorShuffle()
2077   if (N1.isUndef())  in getVectorShuffle()
2113   bool N2Undef = N2.isUndef();  in getVectorShuffle()
2133   N2Undef = N2.isUndef();  in getVectorShuffle()
2135   if (N1.isUndef() && N2Undef)  in getVectorShuffle()
2161       if (Splat && Splat.isUndef())  in getVectorShuffle()
2527     if ((N1.isUndef() || N2.isUndef()) &&  in FoldSetCC()
2533     if (N1.isUndef() && N2.isUndef())  in FoldSetCC()
2538     if (N1.isUndef() || N2.isUndef() || N1 == N2)  in FoldSetCC()
2611   } else if (N1CFP && OpVT.isSimple() && !N2.isUndef()) {  in FoldSetCC()
2618              (OpVT.isFloatingPoint() && (N1.isUndef() || N2.isUndef()))) {  in FoldSetCC()
2720     UndefElts = V.getOperand(0).isUndef()  in isSplatValue()
2766       if (Op.isUndef()) {  in isSplatValue()
5446   if (llvm::all_of(Ops, [](SDValue Op) { return Op.isUndef(); }))  in FoldBUILD_VECTOR()
5488   if (llvm::all_of(Ops, [](SDValue Op) { return Op.isUndef(); }))  in foldCONCAT_VECTORS()
5527     if (Op.isUndef())  in foldCONCAT_VECTORS()
5542       if (Op.isUndef())  in foldCONCAT_VECTORS()
5661     if (N1.isUndef())  in getNode()
5666     if (N1.isUndef())  in getNode()
5672     if (N1.isUndef())  in getNode()
6026 bool SelectionDAG::isUndef(unsigned Opcode, ArrayRef<SDValue> Ops) {  in isUndef()  function in SelectionDAG
6036     if (Divisor.isUndef() || isNullConstant(Divisor))  in isUndef()
6041                         [](SDValue V) { return V.isUndef() ||  in isUndef()
6066   if (isUndef(Opcode, Ops))  in FoldConstantArithmetic()
6336     return Op.isUndef() || Op.getOpcode() == ISD::CONDCODE ||  in FoldConstantArithmetic()
6379         if (Op.isUndef())  in FoldConstantArithmetic()
6397         if (NewNodesMustHaveLegalTypes && !ScalarOp.isUndef() &&  in FoldConstantArithmetic()
6416     if (!ScalarResult.isUndef() && ScalarResult.getOpcode() != ISD::Constant &&  in FoldConstantArithmetic()
6489       if (N1C && N1C->getValueAPF().isNegZero() && N2.isUndef())  in foldConstantFPMath()
6499     if (N1.isUndef() && N2.isUndef())  in foldConstantFPMath()
6501     if (N1.isUndef() || N2.isUndef())  in foldConstantFPMath()
6790         if (Op.isUndef()) {  in getNode()
6831     if (N1.isUndef() || N2.isUndef())  in getNode()
6958     if (N1.isUndef())  in getNode()
6983   if (N1.isUndef()) {  in getNode()
7003   if (N2.isUndef()) {  in getNode()
7006       if (N1.isUndef())  in getNode()
7151     if (N3.isUndef())  in getNode()
7155     if (N2.isUndef())  in getNode()
7162     if (N1.isUndef() && N2.isUndef())  in getNode()
7193     if (N1.isUndef() && N2.getOpcode() == ISD::EXTRACT_SUBVECTOR &&  in getNode()
7278   assert(!Value.isUndef());  in getMemsetValue()
7446   if (Src.isUndef())  in getMemcpyLoadsAndStores()
7649   if (Src.isUndef())  in getMemmoveLoadsAndStores()
7772   if (Src.isUndef())  in getMemsetStores()
8471   if (OffsetOp.isUndef())  in InferPointerInfo()
8522   assert((Indexed || Offset.isUndef()) && "Unindexed load with an offset!");  in getLoad()
8590   assert(LD->getOffset().isUndef() && "Load is already a indexed load!");  in getIndexedLoad()
8723   assert(ST->getOffset().isUndef() && "Store is already a indexed store!");  in getIndexedStore()
8778   assert((Indexed || Offset.isUndef()) && "Unindexed load with an offset!");  in getLoadVP()
8853   assert(LD->getOffset().isUndef() && "Load is already a indexed load!");  in getIndexedLoadVP()
8872   assert((Indexed || Offset.isUndef()) && "Unindexed vp_store with an offset!");  in getStoreVP()
8975   assert(ST->getOffset().isUndef() && "Store is already an indexed store!");  in getIndexedStoreVP()
9029   assert((Indexed || Offset.isUndef()) && "Unindexed load with an offset!");  in getStridedLoadVP()
9104   assert(SLD->getOffset().isUndef() &&  in getIndexedStridedLoadVP()
9126   assert((Indexed || Offset.isUndef()) && "Unindexed vp_store with an offset!");  in getStridedStoreVP()
9227   assert(SST->getOffset().isUndef() &&  in getIndexedStridedStoreVP()
9348   assert((Indexed || Offset.isUndef()) &&  in getMaskedLoad()
9380   assert(LD->getOffset().isUndef() && "Masked load is already a indexed load!");  in getIndexedMaskedLoad()
9396   assert((Indexed || Offset.isUndef()) &&  in getMaskedStore()
9429   assert(ST->getOffset().isUndef() &&  in getIndexedMaskedStore()
9587   if (Cond.isUndef())  in simplifySelect()
9589   if (T.isUndef())  in simplifySelect()
9591   if (F.isUndef())  in simplifySelect()
9615   if (X.isUndef())  in simplifyShift()
9618   if (Y.isUndef())  in simplifyShift()
9649   if (Flags.hasNoNaNs() && (HasNan || X.isUndef() || Y.isUndef()))  in simplifyFPBinop()
9652   if (Flags.hasNoInfs() && (HasInf || X.isUndef() || Y.isUndef()))  in simplifyFPBinop()
12424     if (OpVal.isUndef())  in isConstantSplat()
12486     if (Op.isUndef()) {  in getSplatValue()
12498     assert(getOperand(FirstDemandedIdx).isUndef() &&  in getSplatValue()
12527       if (DemandedElts[I] && getOperand(I).isUndef())  in getRepeatedSequence()
12538       if (Op.isUndef()) {  in getRepeatedSequence()
12543       if (SeqOp && !SeqOp.isUndef() && SeqOp != Op) {  in getRepeatedSequence()
12624     if (Op.isUndef()) {  in getConstantRawBits()