186   while (i != e && N->getOperand(i).isUndef())  in isConstantSplatVectorAllOnes()
215     if (N->getOperand(i) != NotZero && !N->getOperand(i).isUndef())  in isConstantSplatVectorAllOnes()
234     if (Op.isUndef())  in isConstantSplatVectorAllZeros()
275     if (Op.isUndef())  in isBuildVectorOfConstantSDNodes()
288     if (Op.isUndef())  in isBuildVectorOfConstantFPSDNodes()
302   return all_of(N->op_values(), [](SDValue Op) { return Op.isUndef(); });  in allOperandsUndef()
319     if (AllowUndefs && Op.getOperand(i).isUndef()) {  in matchUnaryPredicate()
354     bool LHSUndef = AllowUndefs && LHSOp.isUndef();  in matchBinaryPredicate()
355     bool RHSUndef = AllowUndefs && RHSOp.isUndef();  in matchBinaryPredicate()
1785   if (N1.isUndef() && N2.isUndef())  in getVectorShuffle()
1806   if (N1.isUndef())  in getVectorShuffle()
1842   bool N2Undef = N2.isUndef();  in getVectorShuffle()
1862   N2Undef = N2.isUndef();  in getVectorShuffle()
1864   if (N1.isUndef() && N2Undef)  in getVectorShuffle()
1890       if (Splat && Splat.isUndef())  in getVectorShuffle()
2248     if ((N1.isUndef() || N2.isUndef()) &&  in FoldSetCC()
2254     if (N1.isUndef() && N2.isUndef())  in FoldSetCC()
2343   } else if (N1CFP && OpVT.isSimple() && !N2.isUndef()) {  in FoldSetCC()
2350              (OpVT.isFloatingPoint() && (N1.isUndef() || N2.isUndef()))) {  in FoldSetCC()
2477     UndefElts = V.getOperand(0).isUndef()  in isSplatValue()
2517       if (Op.isUndef()) {  in isSplatValue()
4510   if (llvm::all_of(Ops, [](SDValue Op) { return Op.isUndef(); }))  in FoldBUILD_VECTOR()
4552   if (llvm::all_of(Ops, [](SDValue Op) { return Op.isUndef(); }))  in foldCONCAT_VECTORS()
4591     if (Op.isUndef())  in foldCONCAT_VECTORS()
4606       if (Op.isUndef())  in foldCONCAT_VECTORS()
4870     if (Operand.isUndef())  in getNode()
4875     if (Operand.isUndef())  in getNode()
4881     if (Operand.isUndef())  in getNode()
5173 bool SelectionDAG::isUndef(unsigned Opcode, ArrayRef<SDValue> Ops) {  in isUndef()  function in SelectionDAG
5183     if (Divisor.isUndef() || isNullConstant(Divisor))  in isUndef()
5188                         [](SDValue V) { return V.isUndef() ||  in isUndef()
5215   if (isUndef(Opcode, Ops))  in FoldConstantArithmetic()
5250   if (!IsBVOrSV1 && !N1->isUndef())  in FoldConstantArithmetic()
5254   if (!IsBVOrSV2 && !N2->isUndef())  in FoldConstantArithmetic()
5315     if (!ScalarResult.isUndef() && ScalarResult.getOpcode() != ISD::Constant &&  in FoldConstantArithmetic()
5349   if (isUndef(Opcode, Ops))  in FoldConstantVectorArithmetic()
5366     return Op.isUndef() || Op.getOpcode() == ISD::CONDCODE ||  in FoldConstantVectorArithmetic()
5406         if (Op.isUndef())  in FoldConstantVectorArithmetic()
5433     if (!ScalarResult.isUndef() && ScalarResult.getOpcode() != ISD::Constant &&  in FoldConstantVectorArithmetic()
5490     if (N1CFP && N1CFP->getValueAPF().isNegZero() && N2.isUndef())  in foldConstantFPMath()
5500     if (N1.isUndef() && N2.isUndef())  in foldConstantFPMath()
5502     if (N1.isUndef() || N2.isUndef())  in foldConstantFPMath()
5769         if (Op.isUndef()) {  in getNode()
5803     if (N1.isUndef() || N2.isUndef())  in getNode()
5926     if (N1.isUndef())  in getNode()
5954   if (N1.isUndef()) {  in getNode()
5974   if (N2.isUndef()) {  in getNode()
5977       if (N1.isUndef())  in getNode()
6112     if (N3.isUndef())  in getNode()
6116     if (N2.isUndef())  in getNode()
6123     if (N1.isUndef() && N2.isUndef())  in getNode()
6153     if (N1.isUndef() && N2.getOpcode() == ISD::EXTRACT_SUBVECTOR &&  in getNode()
6232   assert(!Value.isUndef());  in getMemsetValue()
6400   if (Src.isUndef())  in getMemcpyLoadsAndStores()
6595   if (Src.isUndef())  in getMemmoveLoadsAndStores()
6708   if (Src.isUndef())  in getMemsetStores()
7348   if (OffsetOp.isUndef())  in InferPointerInfo()
7399   assert((Indexed || Offset.isUndef()) && "Unindexed load with an offset!");  in getLoad()
7466   assert(LD->getOffset().isUndef() && "Load is already a indexed load!");  in getIndexedLoad()
7597   assert(ST->getOffset().isUndef() && "Store is already a indexed store!");  in getIndexedStore()
7628   assert((Indexed || Offset.isUndef()) &&  in getMaskedLoad()
7659   assert(LD->getOffset().isUndef() && "Masked load is already a indexed load!");  in getIndexedMaskedLoad()
7675   assert((Indexed || Offset.isUndef()) &&  in getMaskedStore()
7707   assert(ST->getOffset().isUndef() &&  in getIndexedMaskedStore()
7811   if (Cond.isUndef())  in simplifySelect()
7813   if (T.isUndef())  in simplifySelect()
7815   if (F.isUndef())  in simplifySelect()
7839   if (X.isUndef())  in simplifyShift()
7842   if (Y.isUndef())  in simplifyShift()
7873   if (Flags.hasNoNaNs() && (HasNan || X.isUndef() || Y.isUndef()))  in simplifyFPBinop()
7876   if (Flags.hasNoInfs() && (HasInf || X.isUndef() || Y.isUndef()))  in simplifyFPBinop()
10317     if (OpVal.isUndef())  in isConstantSplat()
10369     if (Op.isUndef()) {  in getSplatValue()
10381     assert(getOperand(FirstDemandedIdx).isUndef() &&  in getSplatValue()
10410       if (DemandedElts[I] && getOperand(I).isUndef())  in getRepeatedSequence()
10421       if (Op.isUndef()) {  in getRepeatedSequence()
10426       if (SeqOp && !SeqOp.isUndef() && SeqOp != Op) {  in getRepeatedSequence()