lib/CodeGen/UnreachableBlockElim.cpp

73   std::vector<BasicBlock*> DeadBlocks;
77       DeadBlocks.push_back(BB);
88   for (unsigned i = 0, e = DeadBlocks.size(); i != e; ++i) {
89     DeadBlocks[i]->eraseFromParent();
92   return DeadBlocks.size();
135   std::vector<MachineBasicBlock*> DeadBlocks;
141       DeadBlocks.push_back(BB);
168   for (unsigned i = 0, e = DeadBlocks.size(); i != e; ++i)
169     DeadBlocks[i]->eraseFromParent();
210   return (DeadBlocks.size() || ModifiedPHI);