450       if (isa<UndefValue>(Arg))  in wouldInstructionBeTriviallyDead()
488       return C->isNullValue() || isa<UndefValue>(C);  in wouldInstructionBeTriviallyDead()
592     Value *Undef = UndefValue::get(I->getType());  in replaceDbgUsesWithUndef()
634       I->replaceAllUsesWith(UndefValue::get(I->getType()));  in RecursivelyDeleteDeadPHINode()
748     if (NewVal == PN) NewVal = UndefValue::get(PN->getType());  in MergeBasicBlockIntoOnlyPred()
824   return First == Second || isa<UndefValue>(First) || isa<UndefValue>(Second);  in CanMergeValues()
905   if (!isa<UndefValue>(OldVal)) {  in selectIncomingValueForBlock()
934     if (!isa<UndefValue>(V))  in gatherIncomingValuesToPhi()
950     if (!isa<UndefValue>(V)) continue;  in replaceUndefValuesInPhi()
977       PN->setIncomingValue(i, UndefValue::get(PN->getType()));  in replaceUndefValuesInPhi()
1459     DV = UndefValue::get(DV->getType());  in ConvertDebugDeclareToDebugValue()
1780       Value *Undef = UndefValue::get(I.getOperand(0)->getType());  in salvageDebugInfoForDbgValues()
1791     Value *Undef = UndefValue::get(I.getType());  in salvageDebugInfoForDbgValues()
2099       Inst->replaceAllUsesWith(UndefValue::get(Inst->getType()));  in removeAllNonTerminatorAndEHPadInstructions()
2138       BBI->replaceAllUsesWith(UndefValue::get(BBI->getType()));  in changeToUnreachable()
2289                    isa<UndefValue>(Callee)) {  in markAliveBlocks()
2315         if (isa<UndefValue>(Ptr) ||  in markAliveBlocks()
2332           isa<UndefValue>(Callee)) {  in markAliveBlocks()