Do not automatically pretenure global closures in runtime.cc

src/runtime.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 7470 matching lines @@
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_NewClosure) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 3);
   CONVERT_ARG_CHECKED(Context, context, 0);
   CONVERT_ARG_CHECKED(SharedFunctionInfo, shared, 1);
   CONVERT_BOOLEAN_CHECKED(pretenure, args[2]);
 
-  // Allocate global closures in old space and allocate local closures
-  // in new space. Additionally pretenure closures that are assigned
+  // The caller ensures that we pretenure closures that are assigned
   // directly to properties.
-  pretenure = pretenure || (context->global_context() == *context);
   PretenureFlag pretenure_flag = pretenure ? TENURED : NOT_TENURED;
   Handle<JSFunction> result =
       isolate->factory()->NewFunctionFromSharedFunctionInfo(shared,
                                                             context,
                                                             pretenure_flag);
   return *result;
 }
 
 
 static SmartPointer<Object**> GetNonBoundArguments(int bound_argc,
@@ skipping 4955 matching lines @@
   } else {
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     isolate->counters()->gc_last_resort_from_js()->Increment();
     isolate->heap()->CollectAllGarbage(false);
   }
 }
 
 
 } }  // namespace v8::internal