82   BasicBlock::iterator BBI = I, BBE = BB->end();  in ChangeToUnreachable()  local
83   while (BBI != BBE) {  in ChangeToUnreachable()
84     if (!BBI->use_empty())  in ChangeToUnreachable()
85       BBI->replaceAllUsesWith(UndefValue::get(BBI->getType()));  in ChangeToUnreachable()
86     BB->getInstList().erase(BBI++);  in ChangeToUnreachable()
124     for (BasicBlock::iterator BBI = BB->begin(), E = BB->end(); BBI != E;++BBI){  in MarkAliveBlocks()  local
125       if (CallInst *CI = dyn_cast<CallInst>(BBI)) {  in MarkAliveBlocks()
130           ++BBI;  in MarkAliveBlocks()
131           if (!isa<UnreachableInst>(BBI)) {  in MarkAliveBlocks()
133             ChangeToUnreachable(BBI, false);  in MarkAliveBlocks()
143       if (StoreInst *SI = dyn_cast<StoreInst>(BBI)) {  in MarkAliveBlocks()
216   for (Function::iterator BBI = F.begin(), E = F.end(); BBI != E; ) {  in MergeEmptyReturnBlocks()  local
217     BasicBlock &BB = *BBI++;  in MergeEmptyReturnBlocks()