Create and use shared stub for for DictionaryValue-based elements.

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index 3a756585e574ead45594e3c18e662ce1b8441694..486790e6b74d694cc9179758f32b87c2fe6a11ca 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -70,10 +70,8 @@ namespace internal {
   V(NumberToString)                      \
   V(CEntry)                              \
   V(JSEntry)                             \
-  V(KeyedLoadFastElement)                \
-  V(KeyedStoreFastElement)               \
-  V(KeyedLoadExternalArray)              \
-  V(KeyedStoreExternalArray)             \
+  V(KeyedLoadElement)                    \
+  V(KeyedStoreElement)                   \
   V(DebuggerStatement)                   \
   V(StringDictionaryNegativeLookup)
 
@@ -928,76 +926,51 @@ class AllowStubCallsScope {
 #endif
 
 
-class KeyedLoadFastElementStub : public CodeStub {
+class KeyedLoadElementStub : public CodeStub {
  public:
-  explicit KeyedLoadFastElementStub() {
-  }
-
-  Major MajorKey() { return KeyedLoadFastElement; }
-  int MinorKey() { return 0; }
-
-  void Generate(MacroAssembler* masm);
-
-  const char* GetName() { return "KeyedLoadFastElementStub"; }
-
-  DECLARE_ARRAY_STUB_PRINT(KeyedLoadFastElementStub)
-};
-
+  explicit KeyedLoadElementStub(JSObject::ElementsKind elements_kind)
+      : elements_kind_(elements_kind)
+  { }
 
-class KeyedStoreFastElementStub : public CodeStub {
- public:
-  explicit KeyedStoreFastElementStub(bool is_js_array)
-      : is_js_array_(is_js_array) { }
-
-  Major MajorKey() { return KeyedStoreFastElement; }
-  int MinorKey() { return is_js_array_ ? 1 : 0; }
-
-  void Generate(MacroAssembler* masm);
-
-  const char* GetName() { return "KeyedStoreFastElementStub"; }
-
-  DECLARE_ARRAY_STUB_PRINT(KeyedStoreFastElementStub)
-
- private:
-  bool is_js_array_;
-};
-
-
-class KeyedLoadExternalArrayStub : public CodeStub {
- public:
-  explicit KeyedLoadExternalArrayStub(JSObject::ElementsKind elements_kind)
-      : elements_kind_(elements_kind) { }
-
-  Major MajorKey() { return KeyedLoadExternalArray; }
+  Major MajorKey() { return KeyedLoadElement; }
   int MinorKey() { return elements_kind_; }
 
   void Generate(MacroAssembler* masm);
 
-  const char* GetName() { return "KeyedLoadExternalArrayStub"; }
+  const char* GetName() { return "KeyedLoadElementStub"; }
 
-  DECLARE_ARRAY_STUB_PRINT(KeyedLoadExternalArrayStub)
+  DECLARE_ARRAY_STUB_PRINT(KeyedLoadElementStub)
 
- protected:
+ private:
   JSObject::ElementsKind elements_kind_;
+
+  DISALLOW_COPY_AND_ASSIGN(KeyedLoadElementStub);
 };
 
 
-class KeyedStoreExternalArrayStub : public CodeStub {
+class KeyedStoreElementStub : public CodeStub {
  public:
-  explicit KeyedStoreExternalArrayStub(JSObject::ElementsKind elements_kind)
-      : elements_kind_(elements_kind) { }
+  KeyedStoreElementStub(bool is_js_array,
+                        JSObject::ElementsKind elements_kind)
+    : is_js_array_(is_js_array),
+    elements_kind_(elements_kind) { }
 
-  Major MajorKey() { return KeyedStoreExternalArray; }
-  int MinorKey() { return elements_kind_; }
+  Major MajorKey() { return KeyedStoreElement; }
+  int MinorKey() {
+    return (is_js_array_ ? 0 : JSObject::kElementsKindCount) + elements_kind_;
+  }
 
   void Generate(MacroAssembler* masm);
 
-  const char* GetName() { return "KeyedStoreExternalArrayStub"; }
+  const char* GetName() { return "KeyedStoreElementStub"; }
 
-  DECLARE_ARRAY_STUB_PRINT(KeyedStoreExternalArrayStub)
+  DECLARE_ARRAY_STUB_PRINT(KeyedStoreElementStub)
 
- protected:
+ private:
+  bool is_js_array_;
   JSObject::ElementsKind elements_kind_;
+
+  DISALLOW_COPY_AND_ASSIGN(KeyedStoreElementStub);
 };