330                                         MachineBasicBlock *MBB2,  in ComputeCommonTailLength()  argument
334   MachineBasicBlock::iterator MBBI2 = MBB2->end();  in ComputeCommonTailLength()
339     MBBI2 = skipBackwardPastNonInstructions(MBBI2, MBB2);  in ComputeCommonTailLength()
340     if (MBBI1 == MBB1->end() || MBBI2 == MBB2->end())  in ComputeCommonTailLength()
544 ProfitableToMerge(MachineBasicBlock *MBB1, MachineBasicBlock *MBB2,  in ProfitableToMerge()  argument
557     auto EHScope2 = EHScopeMembership.find(MBB2);  in ProfitableToMerge()
563   CommonTailLen = ComputeCommonTailLength(MBB1, MBB2, I1, I2);  in ProfitableToMerge()
567                     << " and " << printMBBReference(*MBB2) << " is "  in ProfitableToMerge()
575   if (skipDebugInstructionsForward(MBB2->begin(), MBB2->end(), false) == I2)  in ProfitableToMerge()
576     I2 = MBB2->begin();  in ProfitableToMerge()
579   bool FullBlockTail2 = I2 == MBB2->begin();  in ProfitableToMerge()
586   if ((MBB1 == PredBB || MBB2 == PredBB) &&  in ProfitableToMerge()
589     unsigned NumTerms = CountTerminators(MBB1 == PredBB ? MBB2 : MBB1, I);  in ProfitableToMerge()
600       blockEndsInUnreachable(MBB1) && blockEndsInUnreachable(MBB2))  in ProfitableToMerge()
607   if (MBB1->isLayoutSuccessor(MBB2) && FullBlockTail2)  in ProfitableToMerge()
609   if (MBB2->isLayoutSuccessor(MBB1) && FullBlockTail1)  in ProfitableToMerge()
624     if (!BothFallThrough(MBB1) || !BothFallThrough(MBB2))  in ProfitableToMerge()
634   if (SuccBB && MBB1 != PredBB && MBB2 != PredBB &&  in ProfitableToMerge()
637       !MBB2->back().isBarrier())  in ProfitableToMerge()
652        llvm::shouldOptimizeForSize(MBB2, PSI, &MBBFreqInfo));  in ProfitableToMerge()
1252                                 MachineBasicBlock *MBB2) {  in IsBetterFallthrough()  argument
1253   assert(MBB1 && MBB2 && "Unknown MachineBasicBlock");  in IsBetterFallthrough()
1260   MachineBasicBlock::iterator MBB2I = MBB2->getLastNonDebugInstr();  in IsBetterFallthrough()
1261   if (MBB1I == MBB1->end() || MBB2I == MBB2->end())  in IsBetterFallthrough()
1266   if (MBB1->isSuccessor(MBB2)) return true;  in IsBetterFallthrough()
1267   if (MBB2->isSuccessor(MBB1)) return false;  in IsBetterFallthrough()