471       const BlockChain &SuccChain, BranchProbability SuccProb,
648     BlockChain &SuccChain = *BlockToChain[Succ];  in markBlockSuccessors()  local
650     if (&Chain == &SuccChain || Succ == LoopHeaderBB)  in markBlockSuccessors()
655     if (SuccChain.UnscheduledPredecessors == 0 ||  in markBlockSuccessors()
656         --SuccChain.UnscheduledPredecessors > 0)  in markBlockSuccessors()
659     auto *NewBB = *SuccChain.begin();  in markBlockSuccessors()
697       BlockChain *SuccChain = BlockToChain[Succ];  in collectViableSuccessors()  local
698       if (SuccChain == &Chain) {  in collectViableSuccessors()
700       } else if (Succ != *SuccChain->begin()) {  in collectViableSuccessors()
1381     const BlockChain &SuccChain, BranchProbability SuccProb,  in hasBetterLayoutPredecessor()  argument
1386   if (SuccChain.UnscheduledPredecessors == 0)  in hasBetterLayoutPredecessor()
1511     if (Pred == Succ || PredChain == &SuccChain ||  in hasBetterLayoutPredecessor()
1581     BlockChain *SuccChain = BlockToChain[Succ];  in selectBestSuccessor()  local
1583         SuccChain != &Chain && Succ == *SuccChain->begin())  in selectBestSuccessor()
1603     BlockChain &SuccChain = *BlockToChain[Succ];  in selectBestSuccessor()  local
1606     if (hasBetterLayoutPredecessor(BB, Succ, SuccChain, SuccProb, RealSuccProb,  in selectBestSuccessor()
1617                << (SuccChain.UnscheduledPredecessors != 0 ? " (CFG break)" : "")  in selectBestSuccessor()
1693     BlockChain &SuccChain = *BlockToChain[MBB];  in selectBestCandidateBlock()  local
1694     if (&SuccChain == &Chain)  in selectBestCandidateBlock()
1697     assert(SuccChain.UnscheduledPredecessors == 0 &&  in selectBestCandidateBlock()
1846     BlockChain &SuccChain = *BlockToChain[BestSucc];  in buildChain()  local
1849     SuccChain.UnscheduledPredecessors = 0;  in buildChain()
1852     markChainSuccessors(SuccChain, LoopHeaderBB, BlockFilter);  in buildChain()
1853     Chain.merge(BestSucc, &SuccChain);  in buildChain()
1910         BlockChain *SuccChain = BlockToChain[Succ];  in TopFallThroughFreq()  local
1914             (!SuccChain || Succ == *SuccChain->begin())) {  in TopFallThroughFreq()
1991        BlockChain *SuccChain = BlockToChain[Succ];  in FallThroughGains()  local
1992        if ((SuccChain && (Succ != *SuccChain->begin())) ||  in FallThroughGains()
1993            (SuccChain == BlockToChain[BestPred]))  in FallThroughGains()
2185       BlockChain &SuccChain = *BlockToChain[Succ];  in findBestLoopExit()  local
2187       if (&Chain == &SuccChain) {  in findBestLoopExit()
2276         BlockChain *SuccChain = BlockToChain[Succ];  in hasViableTopFallthrough()  local
2279         if ((!SuccChain || Succ == *SuccChain->begin()) && SuccProb > TopProb) {  in hasViableTopFallthrough()
2322       BlockChain *SuccChain = BlockToChain[Succ];  in rotateLoop()  local
2324           (!SuccChain || Succ == *SuccChain->begin()))  in rotateLoop()
2435       BlockChain *SuccChain = BlockToChain[Succ];  in rotateLoopWithProfile()  local
2437           (!SuccChain || Succ == *SuccChain->begin())) {  in rotateLoopWithProfile()
3137       BlockChain *SuccChain = BlockToChain[Succ];  in isBestSuccessor()  local
3138       if (SuccChain && (Succ != *SuccChain->begin()))  in isBestSuccessor()