Only make function literals in top-level object literals pretenured and constant function propert...

src/parser.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 3826 matching lines @@
           return NULL;
         }
     }
 
     Expect(Token::COLON, CHECK_OK);
     Expression* value = ParseAssignmentExpression(true, CHECK_OK);
 
     ObjectLiteral::Property* property =
         new(zone()) ObjectLiteral::Property(key, value);
 
-    // Mark object literals that contain function literals and pretenure the
-    // literal so it can be added as a constant function property.
-    if (value->AsFunctionLiteral() != NULL) {
+    // Mark top-level object literals that contain function literals and
+    // pretenure the literal so it can be added as a constant function
+    // property.
+    if (top_scope_->DeclarationScope()->is_global_scope() &&
+        value->AsFunctionLiteral() != NULL) {
       has_function = true;
       value->AsFunctionLiteral()->set_pretenure();
     }
 
     // Count CONSTANT or COMPUTED properties to maintain the enumeration order.
     if (IsBoilerplateProperty(property)) number_of_boilerplate_properties++;
     // Validate the property
     checker.CheckProperty(property, loc, CHECK_OK);
     properties->Add(property);
 
@@ skipping 1792 matching lines @@
       ASSERT(info->isolate()->has_pending_exception());
     } else {
       result = parser.ParseProgram(info);
     }
   }
   info->SetFunction(result);
   return (result != NULL);
 }
 
 } }  // namespace v8::internal