enabled module tracw only wehn trace is enabled

src/pass_manager.cpp

@@ -104,8 +104,10 @@ void run_passes(program& prog, const std::vector<pass>& passes, tracer trace)
             if(module_tracer_map.find(mod->name()) == module_tracer_map.end())
             {
                 module_tracer_map[mod->name()] = module_trace;
+                if(trace.enabled()) {
                     module_tracer_map[mod->name()].dump_dir += "/" + mod->name();
                 }
+            }
             if(mod->bypass())
                 continue;
             module_pm{mod, &prog, &module_tracer_map[mod->name()]}.run_pass(p);