Add optimized compiler support for generic global loads....

src/hydrogen-instructions.h

 // 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 105 matching lines @@
   V(IsObject)                                  \
   V(IsSmi)                                     \
   V(IsConstructCall)                           \
   V(JSArrayLength)                             \
   V(LeaveInlined)                              \
   V(LoadContextSlot)                           \
   V(LoadElements)                              \
   V(LoadExternalArrayPointer)                  \
   V(LoadFunctionPrototype)                     \
   V(LoadGlobal)                                \
+  V(LoadGlobalGeneric)                         \
   V(LoadKeyedFastElement)                      \
   V(LoadKeyedGeneric)                          \
   V(LoadNamedField)                            \
   V(LoadNamedGeneric)                          \
   V(LoadPixelArrayElement)                     \
   V(Mod)                                       \
   V(Mul)                                       \
   V(ObjectLiteral)                             \
   V(OsrEntry)                                  \
   V(OuterContext)                              \
@@ skipping 2668 matching lines @@
     HLoadGlobal* b = HLoadGlobal::cast(other);
     return cell_.is_identical_to(b->cell());
   }
 
  private:
   Handle<JSGlobalPropertyCell> cell_;
   bool check_hole_value_;
 };
 
 
+class HLoadGlobalGeneric: public HTemplateInstruction<2> {
+ public:
+  HLoadGlobalGeneric(HValue* context,
+                     HValue* global_object,
+                     Handle<String> name,
+                     bool inside_typeof)
+      : name_(name), inside_typeof_(inside_typeof) {
+    SetOperandAt(0, context);
+    SetOperandAt(1, global_object);
+    set_representation(Representation::Tagged());
+    SetAllSideEffects();
+  }
+
+  virtual void PrintDataTo(StringStream* stream);
+
+  virtual Representation RequiredInputRepresentation(int index) const {
+    return Representation::None();
+  }
+
+  HValue* context() { return OperandAt(0); }
+  HValue* global_object() { return OperandAt(1); }
+  Handle<String> name() const { return name_; }
+  bool inside_typeof() const { return inside_typeof_; }
+
+  DECLARE_CONCRETE_INSTRUCTION(LoadGlobalGeneric, "load_global_generic")
+
+ private:
+  Handle<String> name_;
+  bool inside_typeof_;
+};
+
+
 class HStoreGlobal: public HUnaryOperation {
  public:
   HStoreGlobal(HValue* value,
                Handle<JSGlobalPropertyCell> cell,
                bool check_hole_value)
       : HUnaryOperation(value),
         cell_(cell),
         check_hole_value_(check_hole_value) {
     SetFlag(kChangesGlobalVars);
   }
@@ skipping 627 matching lines @@
   HValue* object() { return left(); }
   HValue* key() { return right(); }
 };
 
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_INSTRUCTIONS_H_