Enable generation of instruction buffer on precompilation

runtime/vm/service_isolate.cc

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/service_isolate.h"
 
 #include "vm/compiler.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_entry.h"
 #include "vm/isolate.h"
@@ skipping 353 matching lines @@
       SwitchIsolateScope switch_scope(I);
       Dart::ShutdownIsolate();
     }
     if (FLAG_trace_service) {
       OS::Print("vm-service: Shutdown.\n");
     }
     ServiceIsolate::FinishedExiting();
   }
 
   void RunMain(Isolate* I) {
+    if (Dart::IsRunningPrecompiledCode()) {
+      // TODO(24651): Remove this.
+      return;
+    }
+
     StartIsolateScope iso_scope(I);
     Thread* T = Thread::Current();
     ASSERT(I == T->isolate());
     StackZone zone(T);
     HANDLESCOPE(T);
     // Invoke main which will return the loadScriptPort.
     const Library& root_library = Library::Handle(Z,
         I->object_store()->root_library());
     if (root_library.IsNull()) {
       if (FLAG_trace_service) {
@@ skipping 103 matching lines @@
   ASSERT(!result.IsNull());
   Dart_Port port = ILLEGAL_PORT;
   if (result.IsReceivePort()) {
     port = ReceivePort::Cast(result).Id();
   }
   ASSERT(port != ILLEGAL_PORT);
   ServiceIsolate::SetServicePort(port);
 }
 
 }  // namespace dart