Revert of [runtime] Replace global object link with native context link in all contexts.

src/code-stubs-hydrogen.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/code-stubs.h"
 
 #include "src/bailout-reason.h"
 #include "src/crankshaft/hydrogen.h"
 #include "src/crankshaft/lithium.h"
 #include "src/field-index.h"
@@ skipping 2119 matching lines @@
   Add<HStoreNamedField>(function_context,
                         HObjectAccess::ForContextSlot(Context::CLOSURE_INDEX),
                         function);
   Add<HStoreNamedField>(function_context,
                         HObjectAccess::ForContextSlot(Context::PREVIOUS_INDEX),
                         context());
   Add<HStoreNamedField>(function_context,
                         HObjectAccess::ForContextSlot(Context::EXTENSION_INDEX),
                         graph()->GetConstant0());
 
-  // Copy the native context from the previous context.
-  HValue* native_context = Add<HLoadNamedField>(
+  // Copy the global object from the previous context.
+  HValue* global_object = Add<HLoadNamedField>(
       context(), nullptr,
-      HObjectAccess::ForContextSlot(Context::NATIVE_CONTEXT_INDEX));
-  Add<HStoreNamedField>(function_context, HObjectAccess::ForContextSlot(
-                                              Context::NATIVE_CONTEXT_INDEX),
-                        native_context);
+      HObjectAccess::ForContextSlot(Context::GLOBAL_OBJECT_INDEX));
+  Add<HStoreNamedField>(function_context,
+                        HObjectAccess::ForContextSlot(
+                            Context::GLOBAL_OBJECT_INDEX),
+                        global_object);
 
   // Initialize the rest of the slots to undefined.
   for (int i = Context::MIN_CONTEXT_SLOTS; i < length; ++i) {
     Add<HStoreNamedField>(function_context,
                           HObjectAccess::ForContextSlot(i),
                           graph()->GetConstantUndefined());
   }
 
   return function_context;
 }
@@ skipping 287 matching lines @@
   return Pop();
 }
 
 
 Handle<Code> KeyedLoadGenericStub::GenerateCode() {
   return DoGenerateCode(this);
 }
 
 }  // namespace internal
 }  // namespace v8