330 static unsigned ComputeCommonTailLength(MachineBasicBlock *MBB1,  in ComputeCommonTailLength()  argument
334   I1 = MBB1->end();  in ComputeCommonTailLength()
338   while (I1 != MBB1->begin() && I2 != MBB2->begin()) {  in ComputeCommonTailLength()
342       if (I1==MBB1->begin()) {  in ComputeCommonTailLength()
381   if (I1 == MBB1->begin() && I2 != MBB2->begin()) {  in ComputeCommonTailLength()
390   if (I2 == MBB2->begin() && I1 != MBB1->begin()) {  in ComputeCommonTailLength()
393       if (I1 == MBB1->begin())  in ComputeCommonTailLength()
595 ProfitableToMerge(MachineBasicBlock *MBB1, MachineBasicBlock *MBB2,  in ProfitableToMerge()  argument
603     auto Funclet1 = FuncletMembership.find(MBB1);  in ProfitableToMerge()
611   CommonTailLen = ComputeCommonTailLength(MBB1, MBB2, I1, I2);  in ProfitableToMerge()
614   DEBUG(dbgs() << "Common tail length of BB#" << MBB1->getNumber()  in ProfitableToMerge()
620   if (MBB1 == PredBB || MBB2 == PredBB) {  in ProfitableToMerge()
622     unsigned NumTerms = CountTerminators(MBB1 == PredBB ? MBB2 : MBB1, I);  in ProfitableToMerge()
631   if (MBB1->isLayoutSuccessor(MBB2) && I2 == MBB2->begin())  in ProfitableToMerge()
633   if (MBB2->isLayoutSuccessor(MBB1) && I1 == MBB1->begin())  in ProfitableToMerge()
640   if (SuccBB && MBB1 != PredBB && MBB2 != PredBB &&  in ProfitableToMerge()
641       !MBB1->back().isBarrier() &&  in ProfitableToMerge()
653   MachineFunction *MF = MBB1->getParent();  in ProfitableToMerge()
655          (I1 == MBB1->begin() || I2 == MBB2->begin());  in ProfitableToMerge()
1193 static bool IsBetterFallthrough(MachineBasicBlock *MBB1,  in IsBetterFallthrough()  argument
1199   MachineBasicBlock::iterator MBB1I = MBB1->getLastNonDebugInstr();  in IsBetterFallthrough()
1201   if (MBB1I == MBB1->end() || MBB2I == MBB2->end())  in IsBetterFallthrough()
1206   if (MBB1->isSuccessor(MBB2)) return true;  in IsBetterFallthrough()
1207   if (MBB2->isSuccessor(MBB1)) return false;  in IsBetterFallthrough()