Skip compilation of signature classes.

runtime/vm/bootstrap.cc

 // Copyright (c) 2012, 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/bootstrap.h"
 
 #include "include/dart_api.h"
 
 #include "vm/bootstrap_natives.h"
 #include "vm/class_finalizer.h"
@@ skipping 234 matching lines @@
     if (!error.IsNull()) {
       return error.raw();
     }
   }
   return Error::null();
 }
 
 
 RawError* Bootstrap::LoadandCompileScripts() {
   Isolate* isolate = Isolate::Current();
-  String& uri = String::Handle();
-  String& patch_uri = String::Handle();
-  String& source = String::Handle();
-  Script& script = Script::Handle();
-  Library& lib = Library::Handle();
-  Error& error = Error::Handle();
+  String& uri = String::Handle(isolate);
+  String& patch_uri = String::Handle(isolate);
+  String& source = String::Handle(isolate);
+  Script& script = Script::Handle(isolate);
+  Library& lib = Library::Handle(isolate);
+  Error& error = Error::Handle(isolate);
   Dart_LibraryTagHandler saved_tag_handler = isolate->library_tag_handler();
 
   // Set the library tag handler for the isolate to the bootstrap
   // library tag handler so that we can load all the bootstrap libraries.
   isolate->set_library_tag_handler(BootstrapLibraryTagHandler);
 
   HANDLESCOPE(isolate);
 
   // Create library objects for all the bootstrap libraries.
   for (intptr_t i = 0;
@@ skipping 39 matching lines @@
       if (!error.IsNull()) {
         break;
       }
     }
   }
   if (error.IsNull()) {
     SetupNativeResolver();
     ClassFinalizer::ProcessPendingClasses();
   }
 
+  Class& cls = Class::Handle(isolate);
+  // Eagerly compile the function implementation class as it is the super
+  // class of signature classes. This allows us to just finalize signature
+  // classes without going through the hoops of trying to compile them.
+  const Type& type =
+      Type::Handle(isolate, isolate->object_store()->function_impl_type());
+  cls = type.type_class();
+  Compiler::CompileClass(cls);
+
   // Restore the library tag handler for the isolate.
   isolate->set_library_tag_handler(saved_tag_handler);
 
   return error.raw();
 }
 
 }  // namespace dart