426   if (TV && Q.isUndefValue(TV))  in threadBinOpOverSelect()
428   if (FV && Q.isUndefValue(FV))  in threadBinOpOverSelect()
645   if (Q.isUndefValue(Op1))  in simplifyAddInst()
799   if (Q.isUndefValue(Op0) || Q.isUndefValue(Op1))  in simplifySubInst()
941   if (Q.isUndefValue(Op1) || match(Op1, m_Zero()))  in simplifyMulInst()
1088   if (Q.isUndefValue(Op1) || isa<PoisonValue>(Op1))  in simplifyDivRem()
1105       if (Elt && (Elt->isNullValue() || Q.isUndefValue(Elt)))  in simplifyDivRem()
1117   if (Q.isUndefValue(Op0))  in simplifyDivRem()
1322   if (Q.isUndefValue(C))  in isPoisonShift()
1430   if (Q.isUndefValue(Op0))  in simplifyRightShift()
1455   if (Q.isUndefValue(Op0))  in simplifyShlInst()
2081   if (Q.isUndefValue(Op1))  in simplifyAndInst()
2358   if (Q.isUndefValue(Op1) || match(Op1, m_AllOnes()))  in simplifyOrInst()
2540   if (Q.isUndefValue(Op1))  in simplifyXorInst()
3776   if (Q.isUndefValue(RHS) && ICmpInst::isEquality(Pred))  in simplifyICmpInst()
3781   if (LHS == RHS || Q.isUndefValue(RHS))  in simplifyICmpInst()
4098   if (Q.isUndefValue(LHS) || Q.isUndefValue(RHS)) {  in simplifyFCmpInst()
4808     if (Q.isUndefValue(CondC))  in simplifySelectInst()
4915       (Q.isUndefValue(TrueVal) && impliesPoison(FalseVal, Cond)))  in simplifySelectInst()
4920       (Q.isUndefValue(FalseVal) && impliesPoison(TrueVal, Cond)))  in simplifySelectInst()
4943                (Q.isUndefValue(TEltC) && isGuaranteedNotToBePoison(FEltC)))  in simplifySelectInst()
4946                (Q.isUndefValue(FEltC) && isGuaranteedNotToBePoison(TEltC)))  in simplifySelectInst()
5016   if (Q.isUndefValue(Ptr))  in simplifyGEPInst()
5130       (Q.isUndefValue(Val) && isGuaranteedNotToBePoison(Agg)))  in simplifyInsertValueInst()
5140           (Q.isUndefValue(Agg) &&  in simplifyInsertValueInst()
5175   if (Q.isUndefValue(Idx))  in simplifyInsertElementInst()
5181       (Q.isUndefValue(Val) && isGuaranteedNotToBePoison(Vec)))  in simplifyInsertElementInst()
5232     if (Q.isUndefValue(Vec))  in simplifyExtractElementInst()
5238   if (Q.isUndefValue(Idx))  in simplifyExtractElementInst()
5295     if (Q.isUndefValue(Incoming)) {  in simplifyPHINode()
5498     if (Q.isUndefValue(Op1) && RetTy == InVecTy &&  in simplifyShuffleVectorInst()
5621     bool IsUndef = Q.isUndefValue(V);  in simplifyFPOp()
6202   if (Q.isUndefValue(Op0))  in simplifyLdexp()
6209     if (Q.isUndefValue(Op1))  in simplifyLdexp()
6463     if (Q.isUndefValue(Op0) || match(Op0, m_Zero()))  in simplifyBinaryIntrinsic()
6477     if (match(Op1, m_AllOnes()) || Q.isUndefValue(Op1))  in simplifyBinaryIntrinsic()
6508     if (Q.isUndefValue(Op1))  in simplifyBinaryIntrinsic()
6579     if (Op0 == Op1 || Q.isUndefValue(Op0) || Q.isUndefValue(Op1))  in simplifyBinaryIntrinsic()
6586     if (Q.isUndefValue(Op0) || Q.isUndefValue(Op1)) {  in simplifyBinaryIntrinsic()
6601     if (Q.isUndefValue(Op0) || Q.isUndefValue(Op1))  in simplifyBinaryIntrinsic()
6615     if (Q.isUndefValue(Op0) || Q.isUndefValue(Op1))  in simplifyBinaryIntrinsic()
6632     if (Op0 == Op1 || Q.isUndefValue(Op0) || Q.isUndefValue(Op1))  in simplifyBinaryIntrinsic()
6675     if (Q.isUndefValue(Op0))  in simplifyBinaryIntrinsic()
6692     if (Q.isUndefValue(Op1))  in simplifyBinaryIntrinsic()
6802     if (Q.isUndefValue(Op0) && Q.isUndefValue(Op1))  in simplifyIntrinsic()
6806     if (Q.isUndefValue(ShAmtArg))  in simplifyIntrinsic()
6859     if (Q.isUndefValue(Op1))  in simplifyIntrinsic()
6883         (Q.isUndefValue(Vec) || Vec == X) && IdxN == 0 &&  in simplifyIntrinsic()
7312 bool SimplifyQuery::isUndefValue(Value *V) const {  in isUndefValue()  function in llvm::SimplifyQuery