239                               MachineBasicBlock *SuccToSinkTo,
739                                           MachineBasicBlock *SuccToSinkTo,  in isProfitableToSinkTo()  argument
741   assert (SuccToSinkTo && "Invalid SinkTo Candidate BB");  in isProfitableToSinkTo()
743   if (MBB == SuccToSinkTo)  in isProfitableToSinkTo()
747   if (!PDT->dominates(SuccToSinkTo, MBB))  in isProfitableToSinkTo()
752   if (LI->getLoopDepth(MBB) > LI->getLoopDepth(SuccToSinkTo))  in isProfitableToSinkTo()
759     if (UseBlock == SuccToSinkTo && !UseInst.isPHI())  in isProfitableToSinkTo()
770           FindSuccToSinkTo(MI, SuccToSinkTo, BreakPHIEdge, AllSuccessors))  in isProfitableToSinkTo()
771     return isProfitableToSinkTo(Reg, MI, SuccToSinkTo, MBB2, AllSuccessors);  in isProfitableToSinkTo()
785         getBBRegisterPressure(*SuccToSinkTo);  in isProfitableToSinkTo()
814       if (!AllUsesDominatedByBlock(Reg, SuccToSinkTo, MBB, BreakPHIEdge,  in isProfitableToSinkTo()
896   MachineBasicBlock *SuccToSinkTo = nullptr;  in FindSuccToSinkTo()  local
925       if (SuccToSinkTo) {  in FindSuccToSinkTo()
929         if (!AllUsesDominatedByBlock(Reg, SuccToSinkTo, MBB,  in FindSuccToSinkTo()
945           SuccToSinkTo = SuccBlock;  in FindSuccToSinkTo()
954       if (!SuccToSinkTo)  in FindSuccToSinkTo()
956       if (!isProfitableToSinkTo(Reg, MI, MBB, SuccToSinkTo, AllSuccessors))  in FindSuccToSinkTo()
963   if (MBB == SuccToSinkTo)  in FindSuccToSinkTo()
968   if (SuccToSinkTo && SuccToSinkTo->isEHPad())  in FindSuccToSinkTo()
975   if (SuccToSinkTo && SuccToSinkTo->isInlineAsmBrIndirectTarget())  in FindSuccToSinkTo()
978   return SuccToSinkTo;  in FindSuccToSinkTo()
1085 static void performSink(MachineInstr &MI, MachineBasicBlock &SuccToSinkTo,  in performSink()  argument
1092   if (!SuccToSinkTo.empty() && InsertPos != SuccToSinkTo.end())  in performSink()
1100   SuccToSinkTo.splice(InsertPos, ParentBlock, MI,  in performSink()
1110     SuccToSinkTo.insert(InsertPos, NewDbgMI);  in performSink()
1320   MachineBasicBlock *SuccToSinkTo =  in SinkInstruction()  local
1324   if (!SuccToSinkTo)  in SinkInstruction()
1336     if (SuccToSinkTo->isLiveIn(Reg))  in SinkInstruction()
1340   LLVM_DEBUG(dbgs() << "Sink instr " << MI << "\tinto block " << *SuccToSinkTo);  in SinkInstruction()
1344   if (SuccToSinkTo->pred_size() > 1) {  in SinkInstruction()
1349         MI.mayLoad() ? hasStoreBetween(ParentBlock, SuccToSinkTo, MI) : true;  in SinkInstruction()
1357     if (!TryBreak && !DT->dominates(ParentBlock, SuccToSinkTo)) {  in SinkInstruction()
1363     if (!TryBreak && LI->isLoopHeader(SuccToSinkTo)) {  in SinkInstruction()
1376         PostponeSplitCriticalEdge(MI, ParentBlock, SuccToSinkTo, BreakPHIEdge);  in SinkInstruction()
1390                                             SuccToSinkTo, BreakPHIEdge);  in SinkInstruction()
1399   MachineBasicBlock::iterator InsertPos = SuccToSinkTo->begin();  in SinkInstruction()
1400   while (InsertPos != SuccToSinkTo->end() && InsertPos->isPHI())  in SinkInstruction()
1431     SalvageUnsunkDebugUsersOfCopy(MI, SuccToSinkTo);  in SinkInstruction()
1433   performSink(MI, *SuccToSinkTo, InsertPos, DbgUsersToSink);  in SinkInstruction()