493       const BlockChain &SuccChain, BranchProbability SuccProb,
679     BlockChain &SuccChain = *BlockToChain[Succ];  in markBlockSuccessors()  local
681     if (&Chain == &SuccChain || Succ == LoopHeaderBB)  in markBlockSuccessors()
686     if (SuccChain.UnscheduledPredecessors == 0 ||  in markBlockSuccessors()
687         --SuccChain.UnscheduledPredecessors > 0)  in markBlockSuccessors()
690     auto *NewBB = *SuccChain.begin();  in markBlockSuccessors()
728       BlockChain *SuccChain = BlockToChain[Succ];  in collectViableSuccessors()  local
729       if (SuccChain == &Chain) {  in collectViableSuccessors()
731       } else if (Succ != *SuccChain->begin()) {  in collectViableSuccessors()
1412     const BlockChain &SuccChain, BranchProbability SuccProb,  in hasBetterLayoutPredecessor()  argument
1417   if (SuccChain.UnscheduledPredecessors == 0)  in hasBetterLayoutPredecessor()
1542     if (Pred == Succ || PredChain == &SuccChain ||  in hasBetterLayoutPredecessor()
1612     BlockChain *SuccChain = BlockToChain[Succ];  in selectBestSuccessor()  local
1614         SuccChain != &Chain && Succ == *SuccChain->begin())  in selectBestSuccessor()
1634     BlockChain &SuccChain = *BlockToChain[Succ];  in selectBestSuccessor()  local
1637     if (hasBetterLayoutPredecessor(BB, Succ, SuccChain, SuccProb, RealSuccProb,  in selectBestSuccessor()
1648                << (SuccChain.UnscheduledPredecessors != 0 ? " (CFG break)" : "")  in selectBestSuccessor()
1724     BlockChain &SuccChain = *BlockToChain[MBB];  in selectBestCandidateBlock()  local
1725     if (&SuccChain == &Chain)  in selectBestCandidateBlock()
1728     assert(SuccChain.UnscheduledPredecessors == 0 &&  in selectBestCandidateBlock()
1878     BlockChain &SuccChain = *BlockToChain[BestSucc];  in buildChain()  local
1881     SuccChain.UnscheduledPredecessors = 0;  in buildChain()
1884     markChainSuccessors(SuccChain, LoopHeaderBB, BlockFilter);  in buildChain()
1885     Chain.merge(BestSucc, &SuccChain);  in buildChain()
1942         BlockChain *SuccChain = BlockToChain[Succ];  in TopFallThroughFreq()  local
1946             (!SuccChain || Succ == *SuccChain->begin())) {  in TopFallThroughFreq()
2023       BlockChain *SuccChain = BlockToChain[Succ];  in FallThroughGains()  local
2024       if ((SuccChain && (Succ != *SuccChain->begin())) ||  in FallThroughGains()
2025           (SuccChain == BlockToChain[BestPred]))  in FallThroughGains()
2220       BlockChain &SuccChain = *BlockToChain[Succ];  in findBestLoopExit()  local
2222       if (&Chain == &SuccChain) {  in findBestLoopExit()
2311         BlockChain *SuccChain = BlockToChain[Succ];  in hasViableTopFallthrough()  local
2314         if ((!SuccChain || Succ == *SuccChain->begin()) && SuccProb > TopProb) {  in hasViableTopFallthrough()
2357       BlockChain *SuccChain = BlockToChain[Succ];  in rotateLoop()  local
2359           (!SuccChain || Succ == *SuccChain->begin()))  in rotateLoop()
2470       BlockChain *SuccChain = BlockToChain[Succ];  in rotateLoopWithProfile()  local
2472           (!SuccChain || Succ == *SuccChain->begin())) {  in rotateLoopWithProfile()
3206       BlockChain *SuccChain = BlockToChain[Succ];  in isBestSuccessor()  local
3207       if (SuccChain && (Succ != *SuccChain->begin()))  in isBestSuccessor()