195   while (i != e && N->getOperand(i).isUndef())  in isConstantSplatVectorAllOnes()
224     if (N->getOperand(i) != NotZero && !N->getOperand(i).isUndef())  in isConstantSplatVectorAllOnes()
243     if (Op.isUndef())  in isConstantSplatVectorAllZeros()
284     if (Op.isUndef())  in isBuildVectorOfConstantSDNodes()
297     if (Op.isUndef())  in isBuildVectorOfConstantFPSDNodes()
327     if (Op.isUndef())  in isVectorShrinkable()
348   return all_of(N->op_values(), [](SDValue Op) { return Op.isUndef(); });  in allOperandsUndef()
352   return N->getOpcode() == ISD::FREEZE && N->getOperand(0).isUndef();  in isFreezeUndef()
370     if (AllowUndefs && Op.getOperand(i).isUndef()) {  in matchUnaryPredicateImpl()
410     bool LHSUndef = AllowUndefs && LHSOp.isUndef();  in matchBinaryPredicate()
411     bool RHSUndef = AllowUndefs && RHSOp.isUndef();  in matchBinaryPredicate()
2093   if (N1.isUndef() && N2.isUndef())  in getVectorShuffle()
2114   if (N1.isUndef())  in getVectorShuffle()
2150   bool N2Undef = N2.isUndef();  in getVectorShuffle()
2170   N2Undef = N2.isUndef();  in getVectorShuffle()
2172   if (N1.isUndef() && N2Undef)  in getVectorShuffle()
2198       if (Splat && Splat.isUndef())  in getVectorShuffle()
2568     if ((N1.isUndef() || N2.isUndef()) &&  in FoldSetCC()
2574     if (N1.isUndef() && N2.isUndef())  in FoldSetCC()
2579     if (N1.isUndef() || N2.isUndef() || N1 == N2)  in FoldSetCC()
2652   } else if (N1CFP && OpVT.isSimple() && !N2.isUndef()) {  in FoldSetCC()
2659              (OpVT.isFloatingPoint() && (N1.isUndef() || N2.isUndef()))) {  in FoldSetCC()
2761     UndefElts = V.getOperand(0).isUndef()  in isSplatValue()
2807       if (Op.isUndef()) {  in isSplatValue()
5770   if (llvm::all_of(Ops, [](SDValue Op) { return Op.isUndef(); }))  in FoldBUILD_VECTOR()
5812   if (llvm::all_of(Ops, [](SDValue Op) { return Op.isUndef(); }))  in foldCONCAT_VECTORS()
5851     if (Op.isUndef())  in foldCONCAT_VECTORS()
5866       if (Op.isUndef())  in foldCONCAT_VECTORS()
5985     if (N1.isUndef())  in getNode()
5990     if (N1.isUndef())  in getNode()
5996     if (N1.isUndef())  in getNode()
6347 bool SelectionDAG::isUndef(unsigned Opcode, ArrayRef<SDValue> Ops) {  in isUndef()  function in SelectionDAG
6357     if (Divisor.isUndef() || isNullConstant(Divisor))  in isUndef()
6362                         [](SDValue V) { return V.isUndef() ||  in isUndef()
6388   if (isUndef(Opcode, Ops))  in FoldConstantArithmetic()
6665     return Op.isUndef() || Op.getOpcode() == ISD::CONDCODE ||  in FoldConstantArithmetic()
6708         if (Op.isUndef())  in FoldConstantArithmetic()
6726         if (NewNodesMustHaveLegalTypes && !ScalarOp.isUndef() &&  in FoldConstantArithmetic()
6745     if (!ScalarResult.isUndef() && ScalarResult.getOpcode() != ISD::Constant &&  in FoldConstantArithmetic()
6818       if (N1C && N1C->getValueAPF().isNegZero() && N2.isUndef())  in foldConstantFPMath()
6828     if (N1.isUndef() && N2.isUndef())  in foldConstantFPMath()
6830     if (N1.isUndef() || N2.isUndef())  in foldConstantFPMath()
7139         if (Op.isUndef()) {  in getNode()
7180     if (N1.isUndef() || N2.isUndef())  in getNode()
7307     if (N1.isUndef())  in getNode()
7332   if (N1.isUndef()) {  in getNode()
7352   if (N2.isUndef()) {  in getNode()
7355       if (N1.isUndef())  in getNode()
7500     if (N3.isUndef())  in getNode()
7504     if (N2.isUndef())  in getNode()
7511     if (N1.isUndef() && N2.isUndef())  in getNode()
7542     if (N1.isUndef() && N2.getOpcode() == ISD::EXTRACT_SUBVECTOR &&  in getNode()
7570     if (N1.isUndef() || N2.isUndef())  in getNode()
7643   assert(!Value.isUndef());  in getMemsetValue()
7811   if (Src.isUndef())  in getMemcpyLoadsAndStores()
8014   if (Src.isUndef())  in getMemmoveLoadsAndStores()
8137   if (Src.isUndef())  in getMemsetStores()
8870   if (OffsetOp.isUndef())  in InferPointerInfo()
8921   assert((Indexed || Offset.isUndef()) && "Unindexed load with an offset!");  in getLoad()
8989   assert(LD->getOffset().isUndef() && "Load is already a indexed load!");  in getIndexedLoad()
9121   assert(ST->getOffset().isUndef() && "Store is already a indexed store!");  in getIndexedStore()
9176   assert((Indexed || Offset.isUndef()) && "Unindexed load with an offset!");  in getLoadVP()
9251   assert(LD->getOffset().isUndef() && "Load is already a indexed load!");  in getIndexedLoadVP()
9270   assert((Indexed || Offset.isUndef()) && "Unindexed vp_store with an offset!");  in getStoreVP()
9373   assert(ST->getOffset().isUndef() && "Store is already an indexed store!");  in getIndexedStoreVP()
9404   assert((Indexed || Offset.isUndef()) && "Unindexed load with an offset!");  in getStridedLoadVP()
9461   assert((Indexed || Offset.isUndef()) && "Unindexed vp_store with an offset!");  in getStridedStoreVP()
9631   assert((Indexed || Offset.isUndef()) &&  in getMaskedLoad()
9663   assert(LD->getOffset().isUndef() && "Masked load is already a indexed load!");  in getIndexedMaskedLoad()
9679   assert((Indexed || Offset.isUndef()) &&  in getMaskedStore()
9712   assert(ST->getOffset().isUndef() &&  in getIndexedMaskedStore()
9908   if (Cond.isUndef())  in simplifySelect()
9910   if (T.isUndef())  in simplifySelect()
9912   if (F.isUndef())  in simplifySelect()
9936   if (X.isUndef())  in simplifyShift()
9939   if (Y.isUndef())  in simplifyShift()
9974   if (Flags.hasNoNaNs() && (HasNan || X.isUndef() || Y.isUndef()))  in simplifyFPBinop()
9977   if (Flags.hasNoInfs() && (HasInf || X.isUndef() || Y.isUndef()))  in simplifyFPBinop()
11865   return V.isUndef() || isNullConstant(V);  in isNullConstantOrUndef()
12754     if (OpVal.isUndef())  in isConstantSplat()
12816     if (Op.isUndef()) {  in getSplatValue()
12828     assert(getOperand(FirstDemandedIdx).isUndef() &&  in getSplatValue()
12857       if (DemandedElts[I] && getOperand(I).isUndef())  in getRepeatedSequence()
12868       if (Op.isUndef()) {  in getRepeatedSequence()
12873       if (SeqOp && !SeqOp.isUndef() && SeqOp != Op) {  in getRepeatedSequence()
12954     if (Op.isUndef()) {  in getConstantRawBits()