message: Promo to stable
  Summary: const_cast -> ConstInstructionIterable.
diff: @@ -165,8 +165,7 @@ std::vector<Entry*> get_id_order(UnorderedMap& umap) {
  }
  bool has_new_instance_opcode(const cfg::ControlFlowGraph& cfg) {
  - for (const auto& mie :
  - cfg::InstructionIterable(const_cast<cfg::ControlFlowGraph&>(cfg))) {
  + for (const auto& mie : cfg::ConstInstructionIterable(cfg)) {
  auto insn = mie.insn;
  if (insn->opcode() == OPCODE_NEW_INSTANCE) {
  return true;
  