908     if (Op.isUndef())  in isConstantOrConstantVector()
1931   if (!CanFoldNonConst && !NewCT.isUndef() &&  in foldBinOpIntoSelect()
1938   if (!CanFoldNonConst && !NewCF.isUndef() &&  in foldBinOpIntoSelect()
2041   if (N0.isUndef())  in visitADD()
2044   if (N1.isUndef())  in visitADD()
2198   if (N0.isUndef() || N1.isUndef())  in visitADDSAT()
2720   if (N0.isUndef())  in visitSUB()
2722   if (N1.isUndef())  in visitSUB()
2800   if (N0.isUndef() || N1.isUndef())  in visitSUBSAT()
2914   if (N0.isUndef() || N1.isUndef())  in visitMUL()
3183   if (DAG.isUndef(Opc, {N0, N1}))  in simplifyDivRem()
3188   if (N0.isUndef())  in simplifyDivRem()
3565   if (N0.isUndef() || N1.isUndef())  in visitMULHS()
3609   if (N0.isUndef() || N1.isUndef())  in visitMULHU()
3802       (N0.isUndef() || DAG.SignBitIsZero(N0)) &&  in visitIMINMAX()
3803       (N1.isUndef() || DAG.SignBitIsZero(N1))) {  in visitIMINMAX()
3954     if (LogicOpcode == ISD::XOR && !ShOp.isUndef())  in hoistLogicOpWithSameOpcodeHands()
3967     if (LogicOpcode == ISD::XOR && !ShOp.isUndef())  in hoistLogicOpWithSameOpcodeHands()
4110   if (N0.isUndef() || N1.isUndef())  in visitANDLike()
5112   if (!LegalOperations && (N0.isUndef() || N1.isUndef()))  in visitORLike()
5954     assert(L->getOffset().isUndef() && "Unindexed load must have undef offset");  in MatchLoadCombine()
6139   if (N0.isUndef() && N1.isUndef())  in visitXOR()
6142   if (N0.isUndef())  in visitXOR()
6144   if (N1.isUndef())  in visitXOR()
7571     if (Cond->getOperand(i)->isUndef())  in ConvertSelectToConcatVector()
7583     if (Cond->getOperand(i)->isUndef())  in ConvertSelectToConcatVector()
7913     if (N1Elt.isUndef() || N2Elt.isUndef())  in foldVSelectOfConstants()
8077     } else if (SCC->isUndef()) {  in visitSELECT_CC()
8185     if (Op.isUndef()) {  in tryToFoldExtendOfConstant()
9509   if (N0.isUndef())  in visitSIGN_EXTEND_INREG()
9639   if (N0.isUndef())  in visitSIGN_EXTEND_VECTOR_INREG()
9655   if (N0.isUndef())  in visitZERO_EXTEND_VECTOR_INREG()
9848       if (!X.isUndef()) {  in visitTRUNCATE()
10069   if (N0.isUndef())  in visitBITCAST()
10284       if (Op.isUndef() || ISD::isBuildVectorOfConstantSDNodes(Op.getNode()) ||  in visitBITCAST()
10392         if (Op.isUndef()) continue;  in ConstantFoldBITCASTofBUILD_VECTOR()
10417     if (Op.isUndef()) {  in ConstantFoldBITCASTofBUILD_VECTOR()
13078   if (LD->getBasePtr().isUndef() || Offset != 0)  in ForwardStoreValueToDirectLoad()
13394     if (!Origin->getOffset().isUndef())  in isLegal()
14355   if (BasePtr.getBase().isUndef())  in getStoreMergeCandidates()
15185   if (Value.isUndef() && ST->isUnindexed())  in visitSTORE()
15280           !ST1->getBasePtr().isUndef()) {  in visitSTORE()
15503   if (InVal.isUndef())  in visitINSERT_VECTOR_ELT()
15519     if (InVec.isUndef() && TLI.shouldSplatInsEltVarIndex(VT)) {  in visitINSERT_VECTOR_ELT()
15564   } else if (InVec.isUndef()) {  in visitINSERT_VECTOR_ELT()
15706   if (VecOp.isUndef())  in visitEXTRACT_VECTOR_ELT()
15986     if (In.isUndef()) continue;  in reduceBuildVecExtToExtBuildVec()
16041             Cast.isUndef()) && "Invalid cast opcode");  in reduceBuildVecExtToExtBuildVec()
16043     if (Cast.isUndef())  in reduceBuildVecExtToExtBuildVec()
16203     if (Op.isUndef())  in reduceBuildVecToShuffleWithZero()
16306     if (Op.isUndef())  in reduceBuildVecToShuffle()
16654         if (Op.isUndef())  in combineConcatVectorOfScalars()
16684     if (Op.isUndef()) {  in combineConcatVectorOfExtracts()
16701     if (ExtVec.isUndef()) {  in combineConcatVectorOfExtracts()
16725     if (SV0.isUndef() || SV0 == ExtVec) {  in combineConcatVectorOfExtracts()
16729     } else if (SV1.isUndef() || SV1 == ExtVec) {  in combineConcatVectorOfExtracts()
16757         return Op.isUndef();  in visitCONCAT_VECTORS()
16873     if (Op.isUndef())  in visitCONCAT_VECTORS()
17066   if (V.isUndef())  in visitEXTRACT_SUBVECTOR()
17181   if (NumElemsPerConcat * 2 == NumElts && N1.isUndef() &&  in partitionShuffleOfConcats()
17256   if (!N1.isUndef()) {  in combineShuffleOfScalars()
17299     if (!Op.isUndef() && !isa<ConstantSDNode>(Op) && !isa<ConstantFPSDNode>(Op))  in combineShuffleOfScalars()
17574   if (N0.isUndef() && N1.isUndef())  in visitVECTOR_SHUFFLE()
17591   if (N0.isUndef())  in visitVECTOR_SHUFFLE()
17595   if (N1.isUndef()) {  in visitVECTOR_SHUFFLE()
17615     if (N1->isUndef() && N0Shuf->isSplat())  in visitVECTOR_SHUFFLE()
17639         if (!V->getOperand(i).isUndef()) {  in visitVECTOR_SHUFFLE()
17684       (N1.isUndef() ||  in visitVECTOR_SHUFFLE()
17701       N1.isUndef() && Level < AfterLegalizeVectorOps &&  in visitVECTOR_SHUFFLE()
17777     bool IsSV1Undef = SV1.isUndef();  in visitVECTOR_SHUFFLE()
17835       if (CurrentVec.isUndef()) {  in visitVECTOR_SHUFFLE()
17954   if (N1.isUndef())  in visitINSERT_SUBVECTOR()
17959   if (N0.isUndef() && N1.getOpcode() == ISD::EXTRACT_SUBVECTOR &&  in visitINSERT_SUBVECTOR()
17967   if (N0.isUndef() && N1.getOpcode() == ISD::BITCAST &&  in visitINSERT_SUBVECTOR()
18007   if (N0.isUndef() && N1.getOpcode() == ISD::INSERT_SUBVECTOR &&  in visitINSERT_SUBVECTOR()
18008       N1.getOperand(0).isUndef() && isNullConstant(N1.getOperand(2)))  in visitINSERT_SUBVECTOR()
18114       if (Elt.isUndef()) {  in XformToShuffleWithZero()
18189       LHS.getOperand(1).isUndef() &&  in SimplifyVBinOp()
18190       RHS.getOperand(1).isUndef()) {  in SimplifyVBinOp()
19283   if (BasePtr.getBase().isUndef())  in parallelizeChainedStores()
19380   if (BasePtr.getBase().isUndef())  in findBetterNeighborChains()