482       const BlockChain &SuccChain, BranchProbability SuccProb,
668     BlockChain &SuccChain = *BlockToChain[Succ];  in markBlockSuccessors()  local
670     if (&Chain == &SuccChain || Succ == LoopHeaderBB)  in markBlockSuccessors()
675     if (SuccChain.UnscheduledPredecessors == 0 ||  in markBlockSuccessors()
676         --SuccChain.UnscheduledPredecessors > 0)  in markBlockSuccessors()
679     auto *NewBB = *SuccChain.begin();  in markBlockSuccessors()
717       BlockChain *SuccChain = BlockToChain[Succ];  in collectViableSuccessors()  local
718       if (SuccChain == &Chain) {  in collectViableSuccessors()
720       } else if (Succ != *SuccChain->begin()) {  in collectViableSuccessors()
1401     const BlockChain &SuccChain, BranchProbability SuccProb,  in hasBetterLayoutPredecessor()  argument
1406   if (SuccChain.UnscheduledPredecessors == 0)  in hasBetterLayoutPredecessor()
1531     if (Pred == Succ || PredChain == &SuccChain ||  in hasBetterLayoutPredecessor()
1601     BlockChain *SuccChain = BlockToChain[Succ];  in selectBestSuccessor()  local
1603         SuccChain != &Chain && Succ == *SuccChain->begin())  in selectBestSuccessor()
1623     BlockChain &SuccChain = *BlockToChain[Succ];  in selectBestSuccessor()  local
1626     if (hasBetterLayoutPredecessor(BB, Succ, SuccChain, SuccProb, RealSuccProb,  in selectBestSuccessor()
1637                << (SuccChain.UnscheduledPredecessors != 0 ? " (CFG break)" : "")  in selectBestSuccessor()
1713     BlockChain &SuccChain = *BlockToChain[MBB];  in selectBestCandidateBlock()  local
1714     if (&SuccChain == &Chain)  in selectBestCandidateBlock()
1717     assert(SuccChain.UnscheduledPredecessors == 0 &&  in selectBestCandidateBlock()
1866     BlockChain &SuccChain = *BlockToChain[BestSucc];  in buildChain()  local
1869     SuccChain.UnscheduledPredecessors = 0;  in buildChain()
1872     markChainSuccessors(SuccChain, LoopHeaderBB, BlockFilter);  in buildChain()
1873     Chain.merge(BestSucc, &SuccChain);  in buildChain()
1930         BlockChain *SuccChain = BlockToChain[Succ];  in TopFallThroughFreq()  local
1934             (!SuccChain || Succ == *SuccChain->begin())) {  in TopFallThroughFreq()
2011        BlockChain *SuccChain = BlockToChain[Succ];  in FallThroughGains()  local
2012        if ((SuccChain && (Succ != *SuccChain->begin())) ||  in FallThroughGains()
2013            (SuccChain == BlockToChain[BestPred]))  in FallThroughGains()
2207       BlockChain &SuccChain = *BlockToChain[Succ];  in findBestLoopExit()  local
2209       if (&Chain == &SuccChain) {  in findBestLoopExit()
2298         BlockChain *SuccChain = BlockToChain[Succ];  in hasViableTopFallthrough()  local
2301         if ((!SuccChain || Succ == *SuccChain->begin()) && SuccProb > TopProb) {  in hasViableTopFallthrough()
2344       BlockChain *SuccChain = BlockToChain[Succ];  in rotateLoop()  local
2346           (!SuccChain || Succ == *SuccChain->begin()))  in rotateLoop()
2457       BlockChain *SuccChain = BlockToChain[Succ];  in rotateLoopWithProfile()  local
2459           (!SuccChain || Succ == *SuccChain->begin())) {  in rotateLoopWithProfile()
3172       BlockChain *SuccChain = BlockToChain[Succ];  in isBestSuccessor()  local
3173       if (SuccChain && (Succ != *SuccChain->begin()))  in isBestSuccessor()