243                               MachineBasicBlock *SuccToSinkTo,
742                                           MachineBasicBlock *SuccToSinkTo,  in isProfitableToSinkTo()  argument
744   assert (SuccToSinkTo && "Invalid SinkTo Candidate BB");  in isProfitableToSinkTo()
746   if (MBB == SuccToSinkTo)  in isProfitableToSinkTo()
750   if (!PDT->dominates(SuccToSinkTo, MBB))  in isProfitableToSinkTo()
755   if (CI->getCycleDepth(MBB) > CI->getCycleDepth(SuccToSinkTo))  in isProfitableToSinkTo()
762     if (UseBlock == SuccToSinkTo && !UseInst.isPHI())  in isProfitableToSinkTo()
773           FindSuccToSinkTo(MI, SuccToSinkTo, BreakPHIEdge, AllSuccessors))  in isProfitableToSinkTo()
774     return isProfitableToSinkTo(Reg, MI, SuccToSinkTo, MBB2, AllSuccessors);  in isProfitableToSinkTo()
788         getBBRegisterPressure(*SuccToSinkTo);  in isProfitableToSinkTo()
821       if (!AllUsesDominatedByBlock(Reg, SuccToSinkTo, MBB, BreakPHIEdge,  in isProfitableToSinkTo()
906   MachineBasicBlock *SuccToSinkTo = nullptr;  in FindSuccToSinkTo()  local
934       if (SuccToSinkTo) {  in FindSuccToSinkTo()
938         if (!AllUsesDominatedByBlock(Reg, SuccToSinkTo, MBB,  in FindSuccToSinkTo()
954           SuccToSinkTo = SuccBlock;  in FindSuccToSinkTo()
963       if (!SuccToSinkTo)  in FindSuccToSinkTo()
965       if (!isProfitableToSinkTo(Reg, MI, MBB, SuccToSinkTo, AllSuccessors))  in FindSuccToSinkTo()
972   if (MBB == SuccToSinkTo)  in FindSuccToSinkTo()
977   if (SuccToSinkTo && SuccToSinkTo->isEHPad())  in FindSuccToSinkTo()
984   if (SuccToSinkTo && SuccToSinkTo->isInlineAsmBrIndirectTarget())  in FindSuccToSinkTo()
987   return SuccToSinkTo;  in FindSuccToSinkTo()
1094 static void performSink(MachineInstr &MI, MachineBasicBlock &SuccToSinkTo,  in performSink()  argument
1100   if (!SuccToSinkTo.empty() && InsertPos != SuccToSinkTo.end())  in performSink()
1108   SuccToSinkTo.splice(InsertPos, ParentBlock, MI,  in performSink()
1118     SuccToSinkTo.insert(InsertPos, NewDbgMI);  in performSink()
1376   MachineBasicBlock *SuccToSinkTo =  in SinkInstruction()  local
1380   if (!SuccToSinkTo)  in SinkInstruction()
1392     if (SuccToSinkTo->isLiveIn(Reg))  in SinkInstruction()
1396   LLVM_DEBUG(dbgs() << "Sink instr " << MI << "\tinto block " << *SuccToSinkTo);  in SinkInstruction()
1400   if (SuccToSinkTo->pred_size() > 1) {  in SinkInstruction()
1405         MI.mayLoad() ? hasStoreBetween(ParentBlock, SuccToSinkTo, MI) : true;  in SinkInstruction()
1413     if (!TryBreak && !DT->dominates(ParentBlock, SuccToSinkTo)) {  in SinkInstruction()
1419     if (!TryBreak && CI->getCycle(SuccToSinkTo) &&  in SinkInstruction()
1420         (!CI->getCycle(SuccToSinkTo)->isReducible() ||  in SinkInstruction()
1421          CI->getCycle(SuccToSinkTo)->getHeader() == SuccToSinkTo)) {  in SinkInstruction()
1434         PostponeSplitCriticalEdge(MI, ParentBlock, SuccToSinkTo, BreakPHIEdge);  in SinkInstruction()
1448                                             SuccToSinkTo, BreakPHIEdge);  in SinkInstruction()
1458       SuccToSinkTo->SkipPHIsAndLabels(SuccToSinkTo->begin());  in SinkInstruction()
1459   if (blockPrologueInterferes(SuccToSinkTo, InsertPos, MI, TRI, TII, MRI)) {  in SinkInstruction()
1492     SalvageUnsunkDebugUsersOfCopy(MI, SuccToSinkTo);  in SinkInstruction()
1494   performSink(MI, *SuccToSinkTo, InsertPos, DbgUsersToSink);  in SinkInstruction()