462       BlockChain &LoopChain, const MachineBasicBlock *ExitingBB,
465       BlockChain &LoopChain, const MachineLoop &L,
1956 void MachineBlockPlacement::rotateLoop(BlockChain &LoopChain,  in rotateLoop()  argument
1962   MachineBasicBlock *Top = *LoopChain.begin();  in rotateLoop()
1963   MachineBasicBlock *Bottom = *std::prev(LoopChain.end());  in rotateLoop()
1991   BlockChain::iterator ExitIt = llvm::find(LoopChain, ExitingBB);  in rotateLoop()
1992   if (ExitIt == LoopChain.end())  in rotateLoop()
2015     assert(std::next(ExitIt) != LoopChain.end() &&  in rotateLoop()
2025   std::rotate(LoopChain.begin(), std::next(ExitIt), LoopChain.end());  in rotateLoop()
2042     BlockChain &LoopChain, const MachineLoop &L,  in rotateLoopWithProfile()  argument
2045   auto HeaderIter = llvm::find(LoopChain, HeaderBB);  in rotateLoopWithProfile()
2046   auto RotationPos = LoopChain.end();  in rotateLoopWithProfile()
2085   for (auto BB : LoopChain) {  in rotateLoopWithProfile()
2104   for (auto Iter = LoopChain.begin(), TailIter = std::prev(LoopChain.end()),  in rotateLoopWithProfile()
2105             EndIter = LoopChain.end();  in rotateLoopWithProfile()
2109     if (TailIter == LoopChain.end())  in rotateLoopWithProfile()
2110       TailIter = LoopChain.begin();  in rotateLoopWithProfile()
2169   if (RotationPos != LoopChain.end()) {  in rotateLoopWithProfile()
2172     std::rotate(LoopChain.begin(), RotationPos, LoopChain.end());  in rotateLoopWithProfile()
2255   BlockChain &LoopChain = *BlockToChain[LoopTop];  in buildLoopChains()  local
2261   assert(LoopChain.UnscheduledPredecessors == 0 &&  in buildLoopChains()
2263   UpdatedPreds.insert(&LoopChain);  in buildLoopChains()
2268   buildChain(LoopTop, LoopChain, &LoopBlockSet);  in buildLoopChains()
2271     rotateLoopWithProfile(LoopChain, L, LoopBlockSet);  in buildLoopChains()
2273     rotateLoop(LoopChain, PreferredLoopExit, LoopBlockSet);  in buildLoopChains()
2278     if (LoopChain.UnscheduledPredecessors) {  in buildLoopChains()
2282              << "  Chain header: " << getBlockName(*LoopChain.begin()) << "\n";  in buildLoopChains()
2284     for (MachineBasicBlock *ChainBB : LoopChain) {  in buildLoopChains()
2292                << "  Chain header: " << getBlockName(*LoopChain.begin()) << "\n"  in buildLoopChains()
2302                << "  Chain header: " << getBlockName(*LoopChain.begin()) << "\n"  in buildLoopChains()