207     for (MachineBasicBlock *ChainBB : *Chain) {  in merge()
208       Blocks.push_back(ChainBB);  in merge()
209       assert(BlockToChain[ChainBB] == Chain && "Incoming blocks not in chain");  in merge()
210       BlockToChain[ChainBB] = this;  in merge()
817   for (MachineBasicBlock *ChainBB : Chain) {  in fillWorkLists()
818     assert(BlockToChain[ChainBB] == &Chain);  in fillWorkLists()
819     for (MachineBasicBlock *Pred : ChainBB->predecessors()) {  in fillWorkLists()
1354     for (MachineBasicBlock *ChainBB : LoopChain) {  in buildLoopChains()
1355       dbgs() << "          ... " << getBlockName(ChainBB) << "\n";  in buildLoopChains()
1356       if (!LoopBlockSet.erase(ChainBB)) {  in buildLoopChains()
1363                << "  Bad block:    " << getBlockName(ChainBB) << "\n";  in buildLoopChains()
1465     for (MachineBasicBlock *ChainBB : FunctionChain)  in buildCFGChains()
1466       if (!FunctionBlockSet.erase(ChainBB)) {  in buildCFGChains()
1469                << "  Bad block:    " << getBlockName(ChainBB) << "\n";  in buildCFGChains()
1484   for (MachineBasicBlock *ChainBB : FunctionChain) {  in buildCFGChains()
1485     DEBUG(dbgs() << (ChainBB == *FunctionChain.begin() ? "Placing chain "  in buildCFGChains()
1487                  << getBlockName(ChainBB) << "\n");  in buildCFGChains()
1488     if (InsertPos != MachineFunction::iterator(ChainBB))  in buildCFGChains()
1489       F->splice(InsertPos, ChainBB);  in buildCFGChains()
1494     if (ChainBB == *FunctionChain.begin())  in buildCFGChains()
1496     MachineBasicBlock *PrevBB = &*std::prev(MachineFunction::iterator(ChainBB));  in buildCFGChains()
1549   for (MachineBasicBlock *ChainBB : FunctionChain) {  in optimizeBranches()
1552     if (!TII->analyzeBranch(*ChainBB, TBB, FBB, Cond, /*AllowModify*/ true)) {  in optimizeBranches()
1556           MBPI->getEdgeProbability(ChainBB, FBB) >  in optimizeBranches()
1557               MBPI->getEdgeProbability(ChainBB, TBB) &&  in optimizeBranches()
1560                      << getBlockName(ChainBB) << "\n");  in optimizeBranches()
1562                      << MBPI->getEdgeProbability(ChainBB, FBB) << " vs "  in optimizeBranches()
1563                      << MBPI->getEdgeProbability(ChainBB, TBB) << "\n");  in optimizeBranches()
1565         TII->RemoveBranch(*ChainBB);  in optimizeBranches()
1566         TII->InsertBranch(*ChainBB, FBB, TBB, Cond, dl);  in optimizeBranches()
1567         ChainBB->updateTerminator();  in optimizeBranches()
1588   for (MachineBasicBlock *ChainBB : FunctionChain) {  in alignBlocks()
1589     if (ChainBB == *FunctionChain.begin())  in alignBlocks()
1596     MachineLoop *L = MLI->getLoopFor(ChainBB);  in alignBlocks()
1606     BlockFrequency Freq = MBFI->getBlockFreq(ChainBB);  in alignBlocks()
1620         &*std::prev(MachineFunction::iterator(ChainBB));  in alignBlocks()
1624     if (!LayoutPred->isSuccessor(ChainBB)) {  in alignBlocks()
1625       ChainBB->setAlignment(Align);  in alignBlocks()
1634         MBPI->getEdgeProbability(LayoutPred, ChainBB);  in alignBlocks()
1637       ChainBB->setAlignment(Align);  in alignBlocks()