message: fallback to test if A/B experiment does not have a cofing
  Summary: Experimental passes enabled by default.
diff: @@ -44,7 +44,7 @@ ABExperimentContextImpl::ABExperimentContextImpl(cfg::ControlFlowGraph* cfg,
  always_assert(cfg == &m->get_code()->cfg());
  m_state = s_experiments_states.count(exp_name) == 0
  - ? ABExperimentState::CONTROL
  + ? ABExperimentState::TEST
  : s_experiments_states[exp_name];
  setup_context();
  