755     BasicBlock::iterator BBI = BB->begin();  in TryToSimplifyUncondBranchFromEmptyBlock()  local
756     while (isa<PHINode>(*BBI)) {  in TryToSimplifyUncondBranchFromEmptyBlock()
757       for (Use &U : BBI->uses()) {  in TryToSimplifyUncondBranchFromEmptyBlock()
765       ++BBI;  in TryToSimplifyUncondBranchFromEmptyBlock()
1141   BasicBlock::iterator BBI = I, BBE = BB->end();  in changeToUnreachable()  local
1142   while (BBI != BBE) {  in changeToUnreachable()
1143     if (!BBI->use_empty())  in changeToUnreachable()
1144       BBI->replaceAllUsesWith(UndefValue::get(BBI->getType()));  in changeToUnreachable()
1145     BB->getInstList().erase(BBI++);  in changeToUnreachable()
1180     for (BasicBlock::iterator BBI = BB->begin(), E = BB->end(); BBI != E;++BBI){  in markAliveBlocks()  local
1181       if (CallInst *CI = dyn_cast<CallInst>(BBI)) {  in markAliveBlocks()
1186           ++BBI;  in markAliveBlocks()
1187           if (!isa<UnreachableInst>(BBI)) {  in markAliveBlocks()
1189             changeToUnreachable(BBI, false);  in markAliveBlocks()
1199       if (StoreInst *SI = dyn_cast<StoreInst>(BBI)) {  in markAliveBlocks()