199 using SwitchCaseResultsTy = SmallVector<std::pair<PHINode *, Constant *>, 4>;
305       for (BasicBlock::iterator BBI = Succ->begin(); isa<PHINode>(BBI); ++BBI) {  in SafeToMergeTerminators()
306         PHINode *PN = cast<PHINode>(BBI);  in SafeToMergeTerminators()
325   for (PHINode &PN : Succ->phis())  in AddPredecessorToBlock()
1100       auto *PN = dyn_cast<PHINode>(UI);  in CloneInstructionsIntoPredecessorBlockAndUpdateSSAUses()
1382     for (const PHINode &PN : Succ->phis()) {  in isSafeToHoistInvoke()
1431   if (isa<PHINode>(I1) || !I1->isIdenticalToWhenDefined(I2) ||  in HoistThenElseCodeToIf()
1555     for (PHINode &PN : Succ->phis()) {  in HoistThenElseCodeToIf()
1598     for (PHINode &PN : Succ->phis()) {  in HoistThenElseCodeToIf()
1679     if (isa<PHINode>(I) || I->isEHPad() || isa<AllocaInst>(I) ||  in canSinkInstructions()
1713     auto *PNUse = dyn_cast<PHINode>(*I0->user_begin());  in canSinkInstructions()
1819     auto *PNUse = dyn_cast<PHINode>(*I0->user_begin());  in sinkLastInstruction()
1848     auto *PN = PHINode::Create(Op->getType(), Insts.size(),  in sinkLastInstruction()
1880     auto *PN = cast<PHINode>(*I0->user_begin());  in sinkLastInstruction()
2278   for (PHINode &PN : EndBB->phis()) {  in validateAndCostRequiredSelects()
2519   for (PHINode &PN : EndBB->phis()) {  in SpeculativelyExecuteBB()
2576     else if (!isa<PHINode>(I)) {  in BlockIsSimpleEnoughToThreadThrough()
2585       if (UI->getParent() != BB || isa<PHINode>(UI))  in BlockIsSimpleEnoughToThreadThrough()
2601   PHINode *PN = dyn_cast<PHINode>(BI->getCondition());  in FoldCondBranchOnPHI()
2658       if (PHINode *PN = dyn_cast<PHINode>(BBI)) {  in FoldCondBranchOnPHI()
2722 static bool FoldTwoEntryPHINode(PHINode *PN, const TargetTransformInfo &TTI,  in FoldTwoEntryPHINode()
2777   if (auto *IfCondPhiInst = dyn_cast<PHINode>(IfCond))  in FoldTwoEntryPHINode()
2787   for (BasicBlock::iterator I = BB->begin(); isa<PHINode>(I); ++NumPhis, ++I)  in FoldTwoEntryPHINode()
2800   for (BasicBlock::iterator II = BB->begin(); isa<PHINode>(II);) {  in FoldTwoEntryPHINode()
2801     PHINode *PN = cast<PHINode>(II++);  in FoldTwoEntryPHINode()
2818   PN = dyn_cast<PHINode>(BB->begin());  in FoldTwoEntryPHINode()
2883   while (PHINode *PN = dyn_cast<PHINode>(BB->begin())) {  in FoldTwoEntryPHINode()
3220       if (auto *PN = dyn_cast<PHINode>(UI))  in FoldBranchToCommonDest()
3273   PHINode *PHI = nullptr;  in ensureValueAvailableInSuccessor()
3276   for (auto I = Succ->begin(); isa<PHINode>(I); ++I)  in ensureValueAvailableInSuccessor()
3277     if (cast<PHINode>(I)->getIncomingValueForBlock(BB) == V) {  in ensureValueAvailableInSuccessor()
3278       PHI = cast<PHINode>(I);  in ensureValueAvailableInSuccessor()
3297   PHI = PHINode::Create(V->getType(), 2, "simplifycfg.merge", &Succ->front());  in ensureValueAvailableInSuccessor()
3641       PHINode *NewPN = PHINode::Create(  in SimplifyCondBranchToCondBranch()
3724   for (BasicBlock::iterator II = CommonDest->begin(); isa<PHINode>(II);  in SimplifyCondBranchToCondBranch()
3729     PHINode *PN = cast<PHINode>(II);  in SimplifyCondBranchToCondBranch()
3830   for (PHINode &PN : CommonDest->phis()) {  in SimplifyCondBranchToCondBranch()
4031   if (isa<PHINode>(BB->begin()) || !ICI->hasOneUse())  in tryToSimplifyUncondBranchWithICmpInIt()
4083   PHINode *PHIUse = dyn_cast<PHINode>(ICI->user_back());  in tryToSimplifyUncondBranchWithICmpInIt()
4085       isa<PHINode>(++BasicBlock::iterator(PHIUse)))  in tryToSimplifyUncondBranchWithICmpInIt()
4248   for (BasicBlock::iterator BBI = EdgeBB->begin(); isa<PHINode>(BBI); ++BBI) {  in SimplifyBranchOnICmpChain()
4249     PHINode *PN = cast<PHINode>(BBI);  in SimplifyBranchOnICmpChain()
4265   if (isa<PHINode>(RI->getValue()))  in simplifyResume()
4307   auto *PhiLPInst = cast<PHINode>(RI->getValue());  in simplifyCommonResume()
4427     for (PHINode &DestPN : UnwindDest->phis()) {  in removeEmptyCleanup()
4443       PHINode *SrcPN = dyn_cast<PHINode>(SrcVal);  in removeEmptyCleanup()
4455     for (PHINode &PN : make_early_inc_range(BB->phis())) {  in removeEmptyCleanup()
4851   for (auto BBI = ContiguousDest->begin(); isa<PHINode>(BBI); ++BBI) {  in TurnSwitchRangeIntoICmp()
4856       cast<PHINode>(BBI)->removeIncomingValue(SI->getParent());  in TurnSwitchRangeIntoICmp()
4858   for (auto BBI = OtherDest->begin(); isa<PHINode>(BBI); ++BBI) {  in TurnSwitchRangeIntoICmp()
4863       cast<PHINode>(BBI)->removeIncomingValue(SI->getParent());  in TurnSwitchRangeIntoICmp()
4960 static PHINode *FindPHIForConditionForwarding(ConstantInt *CaseValue,  in FindPHIForConditionForwarding()
4973   for (PHINode &PHI : Succ->phis()) {  in FindPHIForConditionForwarding()
4992   using ForwardingNodesMap = DenseMap<PHINode *, SmallVector<int, 4>>;  in ForwardSwitchConditionToPHI()
5012     for (PHINode &Phi : CaseDest->phis()) {  in ForwardSwitchConditionToPHI()
5033     PHINode *Phi = ForwardingNode.first;  in ForwardSwitchConditionToPHI()
5123                SmallVectorImpl<std::pair<PHINode *, Constant *>> &Res,  in GetCaseResults()  argument
5150         if (PHINode *Phi = dyn_cast<PHINode>(User))  in GetCaseResults()
5170   for (PHINode &PHI : (*CommonDest)->phis()) {  in GetCaseResults()
5211 InitializeUniqueCases(SwitchInst *SI, PHINode *&PHI, BasicBlock *&CommonDest,  in InitializeUniqueCases()
5248   SmallVector<std::pair<PHINode *, Constant *>, 1> DefaultResults;  in InitializeUniqueCases()
5314 static void RemoveSwitchAfterSelectConversion(SwitchInst *SI, PHINode *PHI,  in RemoveSwitchAfterSelectConversion()
5355   PHINode *PHI = nullptr;  in switchToSelect()
5630                        const SmallDenseMap<PHINode *, Type *> &ResultTypes) {  in ShouldBuildLookupTable()  argument
5788   SmallDenseMap<PHINode *, ResultListTy> ResultLists;  in SwitchToLookupTable()
5790   SmallDenseMap<PHINode *, Constant *> DefaultResults;  in SwitchToLookupTable()
5791   SmallDenseMap<PHINode *, Type *> ResultTypes;  in SwitchToLookupTable()
5792   SmallVector<PHINode *, 4> PHIs;  in SwitchToLookupTable()
5802     using ResultsTy = SmallVector<std::pair<PHINode *, Constant *>, 4>;  in SwitchToLookupTable()
5810       PHINode *PHI = I.first;  in SwitchToLookupTable()
5819   for (PHINode *PHI : PHIs) {  in SwitchToLookupTable()
5830   SmallVector<std::pair<PHINode *, Constant *>, 4> DefaultResultsList;  in SwitchToLookupTable()
5845     PHINode *PHI = I.first;  in SwitchToLookupTable()
5952   for (PHINode *PHI : PHIs) {  in SwitchToLookupTable()
6233   if (isa<PHINode>(*Succ->begin()))  in TryToMergeLandingPad()
6439   if (PHINode *PN = dyn_cast<PHINode>(BI->getCondition()))  in simplifyCondBranch()
6549   for (PHINode &PHI : BB->phis())  in removeUndefIntroducingPredecessor()
6622     if (auto *PN = dyn_cast<PHINode>(BB->begin()))  in simplifyOnceImpl()