323     for (MachineBasicBlock *ChainBB : *Chain) {  in merge()
324       Blocks.push_back(ChainBB);  in merge()
325       assert(BlockToChain[ChainBB] == Chain && "Incoming blocks not in chain.");  in merge()
326       BlockToChain[ChainBB] = this;  in merge()
1801   for (MachineBasicBlock *ChainBB : Chain) {  in fillWorkLists()
1802     assert(BlockToChain[ChainBB] == &Chain &&  in fillWorkLists()
1804     for (MachineBasicBlock *Pred : ChainBB->predecessors()) {  in fillWorkLists()
2588       for (MachineBasicBlock *ChainBB : *Chain)  in collectLoopBlockSet()
2589         LoopBlockSet.insert(ChainBB);  in collectLoopBlockSet()
2668     for (MachineBasicBlock *ChainBB : LoopChain) {  in buildLoopChains()
2669       dbgs() << "          ... " << getBlockName(ChainBB) << "\n";  in buildLoopChains()
2670       if (!LoopBlockSet.remove(ChainBB)) {  in buildLoopChains()
2677                << "  Bad block:    " << getBlockName(ChainBB) << "\n";  in buildLoopChains()
2757     for (MachineBasicBlock *ChainBB : FunctionChain)  in buildCFGChains()
2758       if (!FunctionBlockSet.erase(ChainBB)) {  in buildCFGChains()
2761                << "  Bad block:    " << getBlockName(ChainBB) << "\n";  in buildCFGChains()
2790   for (MachineBasicBlock *ChainBB : FunctionChain) {  in buildCFGChains()
2791     LLVM_DEBUG(dbgs() << (ChainBB == *FunctionChain.begin() ? "Placing chain "  in buildCFGChains()
2793                       << getBlockName(ChainBB) << "\n");  in buildCFGChains()
2794     if (InsertPos != MachineFunction::iterator(ChainBB))  in buildCFGChains()
2795       F->splice(InsertPos, ChainBB);  in buildCFGChains()
2800     if (ChainBB == *FunctionChain.begin())  in buildCFGChains()
2802     MachineBasicBlock *PrevBB = &*std::prev(MachineFunction::iterator(ChainBB));  in buildCFGChains()
2871   for (MachineBasicBlock *ChainBB : FunctionChain) {  in optimizeBranches()
2874     if (!TII->analyzeBranch(*ChainBB, TBB, FBB, Cond, /*AllowModify*/ true)) {  in optimizeBranches()
2878           MBPI->getEdgeProbability(ChainBB, FBB) >  in optimizeBranches()
2879               MBPI->getEdgeProbability(ChainBB, TBB) &&  in optimizeBranches()
2882                           << getBlockName(ChainBB) << "\n");  in optimizeBranches()
2884                           << MBPI->getEdgeProbability(ChainBB, FBB) << " vs "  in optimizeBranches()
2885                           << MBPI->getEdgeProbability(ChainBB, TBB) << "\n");  in optimizeBranches()
2887         TII->removeBranch(*ChainBB);  in optimizeBranches()
2888         TII->insertBranch(*ChainBB, FBB, TBB, Cond, dl);  in optimizeBranches()
2910   for (MachineBasicBlock *ChainBB : FunctionChain) {  in alignBlocks()
2911     if (ChainBB == *FunctionChain.begin())  in alignBlocks()
2918     MachineLoop *L = MLI->getLoopFor(ChainBB);  in alignBlocks()
2950     BlockFrequency Freq = MBFI->getBlockFreq(ChainBB);  in alignBlocks()
2962     if (llvm::shouldOptimizeForSize(ChainBB, PSI, MBFI.get()) &&  in alignBlocks()
2969         &*std::prev(MachineFunction::iterator(ChainBB));  in alignBlocks()
2977         MaxBytes = TLI->getMaxPermittedBytesForAlignment(ChainBB);  in alignBlocks()
2978       ChainBB->setMaxBytesForAlignment(MaxBytes);  in alignBlocks()
2983     if (!LayoutPred->isSuccessor(ChainBB)) {  in alignBlocks()
2984       ChainBB->setAlignment(LoopAlign);  in alignBlocks()
2994         MBPI->getEdgeProbability(LayoutPred, ChainBB);  in alignBlocks()
2997       ChainBB->setAlignment(LoopAlign);  in alignBlocks()