Transforms/InstCombine/InstCombinePHI.cpp

25 Instruction *InstCombiner::FoldPHIArgBinOpIntoPHI(PHINode &PN) {
82   PHINode *NewLHS = nullptr, *NewRHS = nullptr;
84     NewLHS = PHINode::Create(LHSType, PN.getNumIncomingValues(),
92     NewRHS = PHINode::Create(RHSType, PN.getNumIncomingValues(),
131 Instruction *InstCombiner::FoldPHIArgGEPIntoPHI(PHINode &PN) {
202   SmallVector<PHINode*, 16> OperandPhis(FixedOperands.size());
208     PHINode *NewPN = PHINode::Create(FirstOp->getType(), e,
226         if (PHINode *OpPhi = OperandPhis[op])
286 Instruction *InstCombiner::FoldPHIArgLoadIntoPHI(PHINode &PN) {
347   PHINode *NewPN = PHINode::Create(FirstLI->getOperand(0)->getType(),
403 Instruction *InstCombiner::FoldPHIArgZextsIntoPHI(PHINode &Phi) {
465   PHINode *NewPhi = PHINode::Create(NarrowType, NumIncomingValues,
477 Instruction *InstCombiner::FoldPHIArgOpIntoPHI(PHINode &PN) {
548   PHINode *NewPN = PHINode::Create(FirstInst->getOperand(0)->getType(),
599 static bool DeadPHICycle(PHINode *PN,
600                          SmallPtrSetImpl<PHINode*> &PotentiallyDeadPHIs) {
612   if (PHINode *PU = dyn_cast<PHINode>(PN->user_back()))
621 static bool PHIsEqualValue(PHINode *PN, Value *NonPhiInVal,
622                            SmallPtrSetImpl<PHINode*> &ValueEqualPHIs) {
634     if (PHINode *OpPN = dyn_cast<PHINode>(Op)) {
665   PHINode *PN;        // The PHI that was lowered.
669   LoweredPHIRecord(PHINode *pn, unsigned Sh, Type *Ty)
673   LoweredPHIRecord(PHINode *pn, unsigned Sh)
688       return DenseMapInfo<PHINode*>::getHashValue(Val.PN) ^ (Val.Shift>>3) ^
708 Instruction *InstCombiner::SliceUpIllegalIntegerPHI(PHINode &FirstPhi) {
717   SmallVector<PHINode*, 8> PHIsToSlice;
718   SmallPtrSet<PHINode*, 8> PHIsInspected;
724     PHINode *PN = PHIsToSlice[PHIId];
746       if (PHINode *UserPN = dyn_cast<PHINode>(UserI)) {
788   DenseMap<LoweredPHIRecord, PHINode*> ExtractedVals;
792     PHINode *PN = PHIsToSlice[PHIId];
796     PHINode *EltPHI;
803       EltPHI = PHINode::Create(Ty, PN->getNumIncomingValues(),
826         if (PHINode *InPHI = dyn_cast<PHINode>(PN)) {
850         if (PHINode *OldInVal = dyn_cast<PHINode>(PN->getIncomingValue(i)))
878 // PHINode simplification
880 Instruction *InstCombiner::visitPHINode(PHINode &PN) {
904     if (PHINode *PU = dyn_cast<PHINode>(PHIUser)) {
905       SmallPtrSet<PHINode*, 16> PotentiallyDeadPHIs;
934            isa<PHINode>(PN.getIncomingValue(InValNo)))
944         if (OpVal != NonPhiInVal && !isa<PHINode>(OpVal))
952         SmallPtrSet<PHINode*, 16> ValueEqualPHIs;
963   PHINode *FirstPN = cast<PHINode>(PN.getParent()->begin());