495       const BlockChain &SuccChain, BranchProbability SuccProb,
684     BlockChain &SuccChain = *BlockToChain[Succ];  in markBlockSuccessors()  local
686     if (&Chain == &SuccChain || Succ == LoopHeaderBB)  in markBlockSuccessors()
691     if (SuccChain.UnscheduledPredecessors == 0 ||  in markBlockSuccessors()
692         --SuccChain.UnscheduledPredecessors > 0)  in markBlockSuccessors()
695     auto *NewBB = *SuccChain.begin();  in markBlockSuccessors()
733       BlockChain *SuccChain = BlockToChain[Succ];  in collectViableSuccessors()  local
734       if (SuccChain == &Chain) {  in collectViableSuccessors()
736       } else if (Succ != *SuccChain->begin()) {  in collectViableSuccessors()
1417     const BlockChain &SuccChain, BranchProbability SuccProb,  in hasBetterLayoutPredecessor()  argument
1422   if (SuccChain.UnscheduledPredecessors == 0)  in hasBetterLayoutPredecessor()
1547     if (Pred == Succ || PredChain == &SuccChain ||  in hasBetterLayoutPredecessor()
1617     BlockChain *SuccChain = BlockToChain[Succ];  in selectBestSuccessor()  local
1619         SuccChain != &Chain && Succ == *SuccChain->begin())  in selectBestSuccessor()
1639     BlockChain &SuccChain = *BlockToChain[Succ];  in selectBestSuccessor()  local
1642     if (hasBetterLayoutPredecessor(BB, Succ, SuccChain, SuccProb, RealSuccProb,  in selectBestSuccessor()
1653                << (SuccChain.UnscheduledPredecessors != 0 ? " (CFG break)" : "")  in selectBestSuccessor()
1729     BlockChain &SuccChain = *BlockToChain[MBB];  in selectBestCandidateBlock()  local
1730     if (&SuccChain == &Chain)  in selectBestCandidateBlock()
1733     assert(SuccChain.UnscheduledPredecessors == 0 &&  in selectBestCandidateBlock()
1914     BlockChain &SuccChain = *BlockToChain[BestSucc];  in buildChain()  local
1917     SuccChain.UnscheduledPredecessors = 0;  in buildChain()
1920     markChainSuccessors(SuccChain, LoopHeaderBB, BlockFilter);  in buildChain()
1921     Chain.merge(BestSucc, &SuccChain);  in buildChain()
1978         BlockChain *SuccChain = BlockToChain[Succ];  in TopFallThroughFreq()  local
1982             (!SuccChain || Succ == *SuccChain->begin())) {  in TopFallThroughFreq()
2059       BlockChain *SuccChain = BlockToChain[Succ];  in FallThroughGains()  local
2060       if ((SuccChain && (Succ != *SuccChain->begin())) ||  in FallThroughGains()
2061           (SuccChain == BlockToChain[BestPred]))  in FallThroughGains()
2256       BlockChain &SuccChain = *BlockToChain[Succ];  in findBestLoopExit()  local
2258       if (&Chain == &SuccChain) {  in findBestLoopExit()
2347         BlockChain *SuccChain = BlockToChain[Succ];  in hasViableTopFallthrough()  local
2350         if ((!SuccChain || Succ == *SuccChain->begin()) && SuccProb > TopProb) {  in hasViableTopFallthrough()
2393       BlockChain *SuccChain = BlockToChain[Succ];  in rotateLoop()  local
2395           (!SuccChain || Succ == *SuccChain->begin()))  in rotateLoop()
2506       BlockChain *SuccChain = BlockToChain[Succ];  in rotateLoopWithProfile()  local
2508           (!SuccChain || Succ == *SuccChain->begin())) {  in rotateLoopWithProfile()
3260       BlockChain *SuccChain = BlockToChain[Succ];  in isBestSuccessor()  local
3261       if (SuccChain && (Succ != *SuccChain->begin()))  in isBestSuccessor()