Remove separate maps for function instances

src/runtime.cc

 // Copyright 2012 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 9198 matching lines @@
   CONVERT_LANGUAGE_MODE_ARG(language_mode, 3);
   ASSERT(args[4]->IsSmi());
   return CompileGlobalEval(isolate,
                            args.at<String>(1),
                            args.at<Object>(2),
                            language_mode,
                            args.smi_at(4));
 }
 
 
-RUNTIME_FUNCTION(MaybeObject*, Runtime_SetNewFunctionAttributes) {
-  // This utility adjusts the property attributes for newly created Function
-  // object ("new Function(...)") by changing the map.
-  // All it does is changing the prototype property to enumerable
-  // as specified in ECMA262, 15.3.5.2.
-  HandleScope scope(isolate);
-  ASSERT(args.length() == 1);
-  CONVERT_ARG_HANDLE_CHECKED(JSFunction, func, 0);
-
-  Handle<Map> map = func->shared()->is_classic_mode()
-      ? isolate->function_instance_map()
-      : isolate->strict_mode_function_instance_map();
-
-  ASSERT(func->map()->instance_type() == map->instance_type());
-  ASSERT(func->map()->instance_size() == map->instance_size());
-  func->set_map(*map);
-  return *func;
-}
-
-
 RUNTIME_FUNCTION(MaybeObject*, Runtime_AllocateInNewSpace) {
   // Allocate a block of memory in NewSpace (filled with a filler).
   // Use as fallback for allocation in generated code when NewSpace
   // is full.
   NoHandleAllocation ha(isolate);
   ASSERT(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(Smi, size_smi, 0);
   int size = size_smi->value();
   RUNTIME_ASSERT(IsAligned(size, kPointerSize));
   RUNTIME_ASSERT(size > 0);
@@ skipping 4268 matching lines @@
     // 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(Heap::kNoGCFlags,
                                        "Runtime::PerformGC");
   }
 }
 
 
 } }  // namespace v8::internal