[turbofan] Make global variable loads and stores explicit.

src/compiler/js-type-feedback.h

 // Copyright 2015 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.
 
 #ifndef V8_COMPILER_JS_TYPE_FEEDBACK_H_
 #define V8_COMPILER_JS_TYPE_FEEDBACK_H_
 
 #include "src/utils.h"
 
 #include "src/compiler/graph-reducer.h"
@@ skipping 66 matching lines @@
         oracle_(oracle),
         global_object_(global_object),
         mode_(mode),
         dependencies_(dependencies) {
     CHECK_NOT_NULL(js_type_feedback);
   }
 
   Reduction Reduce(Node* node) override;
 
   // Visible for unit testing.
+  Reduction ReduceJSLoadGlobal(Node* node);
   Reduction ReduceJSLoadNamed(Node* node);
-  Reduction ReduceJSLoadNamedForGlobalVariable(Node* node);
   Reduction ReduceJSLoadProperty(Node* node);
   Reduction ReduceJSStoreNamed(Node* node);
   Reduction ReduceJSStoreProperty(Node* node);
 
  private:
   JSGraph* jsgraph_;
   SimplifiedOperatorBuilder simplified_;
   JSTypeFeedbackTable* js_type_feedback_;
   TypeFeedbackOracle* oracle_;
   Handle<GlobalObject> global_object_;
@@ skipping 11 matching lines @@
                      Node* effect, Node* control, Node** success, Node** fail);
 
   Node* GetFrameStateBefore(Node* node);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif