288     for (MachineBasicBlock *ChainBB : *Chain) {  in merge()
289       Blocks.push_back(ChainBB);  in merge()
290       assert(BlockToChain[ChainBB] == Chain && "Incoming blocks not in chain.");  in merge()
291       BlockToChain[ChainBB] = this;  in merge()
1670   for (MachineBasicBlock *ChainBB : Chain) {  in fillWorkLists()
1671     assert(BlockToChain[ChainBB] == &Chain &&  in fillWorkLists()
1673     for (MachineBasicBlock *Pred : ChainBB->predecessors()) {  in fillWorkLists()
2284     for (MachineBasicBlock *ChainBB : LoopChain) {  in buildLoopChains()
2285       dbgs() << "          ... " << getBlockName(ChainBB) << "\n";  in buildLoopChains()
2286       if (!LoopBlockSet.remove(ChainBB)) {  in buildLoopChains()
2293                << "  Bad block:    " << getBlockName(ChainBB) << "\n";  in buildLoopChains()
2373     for (MachineBasicBlock *ChainBB : FunctionChain)  in buildCFGChains()
2374       if (!FunctionBlockSet.erase(ChainBB)) {  in buildCFGChains()
2377                << "  Bad block:    " << getBlockName(ChainBB) << "\n";  in buildCFGChains()
2392   for (MachineBasicBlock *ChainBB : FunctionChain) {  in buildCFGChains()
2393     LLVM_DEBUG(dbgs() << (ChainBB == *FunctionChain.begin() ? "Placing chain "  in buildCFGChains()
2395                       << getBlockName(ChainBB) << "\n");  in buildCFGChains()
2396     if (InsertPos != MachineFunction::iterator(ChainBB))  in buildCFGChains()
2397       F->splice(InsertPos, ChainBB);  in buildCFGChains()
2402     if (ChainBB == *FunctionChain.begin())  in buildCFGChains()
2404     MachineBasicBlock *PrevBB = &*std::prev(MachineFunction::iterator(ChainBB));  in buildCFGChains()
2470   for (MachineBasicBlock *ChainBB : FunctionChain) {  in optimizeBranches()
2473     if (!TII->analyzeBranch(*ChainBB, TBB, FBB, Cond, /*AllowModify*/ true)) {  in optimizeBranches()
2477           MBPI->getEdgeProbability(ChainBB, FBB) >  in optimizeBranches()
2478               MBPI->getEdgeProbability(ChainBB, TBB) &&  in optimizeBranches()
2481                           << getBlockName(ChainBB) << "\n");  in optimizeBranches()
2483                           << MBPI->getEdgeProbability(ChainBB, FBB) << " vs "  in optimizeBranches()
2484                           << MBPI->getEdgeProbability(ChainBB, TBB) << "\n");  in optimizeBranches()
2486         TII->removeBranch(*ChainBB);  in optimizeBranches()
2487         TII->insertBranch(*ChainBB, FBB, TBB, Cond, dl);  in optimizeBranches()
2488         ChainBB->updateTerminator();  in optimizeBranches()
2510   for (MachineBasicBlock *ChainBB : FunctionChain) {  in alignBlocks()
2511     if (ChainBB == *FunctionChain.begin())  in alignBlocks()
2518     MachineLoop *L = MLI->getLoopFor(ChainBB);  in alignBlocks()
2528     BlockFrequency Freq = MBFI->getBlockFreq(ChainBB);  in alignBlocks()
2542         &*std::prev(MachineFunction::iterator(ChainBB));  in alignBlocks()
2546     if (!LayoutPred->isSuccessor(ChainBB)) {  in alignBlocks()
2547       ChainBB->setAlignment(Align);  in alignBlocks()
2556         MBPI->getEdgeProbability(LayoutPred, ChainBB);  in alignBlocks()
2559       ChainBB->setAlignment(Align);  in alignBlocks()