357   if (TV && isa<UndefValue>(TV))  in ThreadBinOpOverSelect()
359   if (FV && isa<UndefValue>(FV))  in ThreadBinOpOverSelect()
721     return UndefValue::get(Op0->getType());  in SimplifySubInst()
920     return UndefValue::get(Ty);  in simplifyDivRem()
929       if (Elt && (Elt->isNullValue() || isa<UndefValue>(Elt)))  in simplifyDivRem()
930         return UndefValue::get(Ty);  in simplifyDivRem()
1190   if (isa<UndefValue>(C))  in isUndefShift()
1231     return UndefValue::get(Op0->getType());  in SimplifyShift()
1249     return UndefValue::get(Op0->getType());  in SimplifyShift()
3327   if (LHS == RHS || isa<UndefValue>(RHS))  in SimplifyICmpInst()
3635   if (isa<UndefValue>(LHS) || isa<UndefValue>(RHS)) {  in SimplifyFCmpInst()
4003     if (isa<UndefValue>(CondC))  in SimplifySelectInst()
4020   if (isa<UndefValue>(TrueVal))   // select ?, undef, X -> X  in SimplifySelectInst()
4022   if (isa<UndefValue>(FalseVal))   // select ?, X, undef -> X  in SimplifySelectInst()
4067   if (isa<UndefValue>(Ops[0]))  in SimplifyGEPInst()
4068     return UndefValue::get(GEPTy);  in SimplifyGEPInst()
4214       return UndefValue::get(Vec->getType());  in SimplifyInsertElementInst()
4218   if (isa<UndefValue>(Idx))  in SimplifyInsertElementInst()
4219     return UndefValue::get(Vec->getType());  in SimplifyInsertElementInst()
4266     if (isa<UndefValue>(Vec))  in SimplifyExtractElementInst()
4267       return UndefValue::get(Vec->getType()->getVectorElementType());  in SimplifyExtractElementInst()
4275       return UndefValue::get(Vec->getType()->getVectorElementType());  in SimplifyExtractElementInst()
4282   if (isa<UndefValue>(Idx))  in SimplifyExtractElementInst()
4283     return UndefValue::get(Vec->getType()->getVectorElementType());  in SimplifyExtractElementInst()
4302     if (isa<UndefValue>(Incoming)) {  in SimplifyPHINode()
4315     return UndefValue::get(PN->getType());  in SimplifyPHINode()
4419   if (isa<UndefValue>(Mask))  in SimplifyShuffleVectorInst()
4420     return UndefValue::get(RetTy);  in SimplifyShuffleVectorInst()
4443     Op0 = UndefValue::get(InVecTy);  in SimplifyShuffleVectorInst()
4445     Op1 = UndefValue::get(InVecTy);  in SimplifyShuffleVectorInst()
4464     if (isa<UndefValue>(Op1) && RetTy == InVecTy &&  in SimplifyShuffleVectorInst()
4509   if (isa<UndefValue>(Op0) || isa<UndefValue>(Op1))  in simplifyFPBinop()
4892   if (ConstMask->isNullValue() || isa<UndefValue>(ConstMask))  in maskIsAllZeroOrUndef()
4897       if (MaskElt->isNullValue() || isa<UndefValue>(MaskElt))  in maskIsAllZeroOrUndef()
4965     if (isa<UndefValue>(Op0) || isa<UndefValue>(Op1))  in simplifyBinaryIntrinsic()
4966       return UndefValue::get(ReturnType);  in simplifyBinaryIntrinsic()
4971     if (isa<UndefValue>(Op0) || isa<UndefValue>(Op1))  in simplifyBinaryIntrinsic()
4972       return UndefValue::get(ReturnType);  in simplifyBinaryIntrinsic()
5119       return UndefValue::get(F->getReturnType());  in simplifyIntrinsic()
5151   if (isa<UndefValue>(V) || isa<ConstantPointerNull>(V))  in SimplifyCall()
5152     return UndefValue::get(FTy->getReturnType());  in SimplifyCall()
5357   return Result == I ? UndefValue::get(I->getType()) : Result;  in SimplifyInstruction()