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

src/code-stubs.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 52 matching lines @@
   V(RevertToNumber)                      \
   V(ToBoolean)                           \
   V(ToNumber)                            \
   V(CounterOp)                           \
   V(ArgumentsAccess)                     \
   V(RegExpExec)                          \
   V(RegExpConstructResult)               \
   V(NumberToString)                      \
   V(CEntry)                              \
   V(JSEntry)                             \
-  V(KeyedLoadFastElement)                \
-  V(KeyedStoreFastElement)               \
-  V(KeyedLoadExternalArray)              \
-  V(KeyedStoreExternalArray)             \
+  V(KeyedLoadElement)                    \
+  V(KeyedStoreElement)                   \
   V(DebuggerStatement)                   \
   V(StringDictionaryNegativeLookup)
 
 // List of code stubs only used on ARM platforms.
 #ifdef V8_TARGET_ARCH_ARM
 #define CODE_STUB_LIST_ARM(V)  \
   V(GetProperty)               \
   V(SetProperty)               \
   V(InvokeBuiltin)             \
   V(RegExpCEntry)              \
@@ skipping 834 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(AllowStubCallsScope);
 };
 
 #ifdef DEBUG
 #define DECLARE_ARRAY_STUB_PRINT(name) void Print() { PrintF(#name); }
 #else
 #define DECLARE_ARRAY_STUB_PRINT(name)
 #endif
 
 
-class KeyedLoadFastElementStub : public CodeStub {
+class KeyedLoadElementStub : public CodeStub {
  public:
-  explicit KeyedLoadFastElementStub() {
-  }
+  explicit KeyedLoadElementStub(JSObject::ElementsKind elements_kind)
+      : elements_kind_(elements_kind)
+  { }
 
-  Major MajorKey() { return KeyedLoadFastElement; }
-  int MinorKey() { return 0; }
-
-  void Generate(MacroAssembler* masm);
-
-  const char* GetName() { return "KeyedLoadFastElementStub"; }
-
-  DECLARE_ARRAY_STUB_PRINT(KeyedLoadFastElementStub)
-};
-
-
-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);
 };
 
 
 class ToBooleanStub: public CodeStub {
  public:
   explicit ToBooleanStub(Register tos) : tos_(tos) { }
 
   void Generate(MacroAssembler* masm);
 
  private:
   Register tos_;
   Major MajorKey() { return ToBoolean; }
   int MinorKey() { return tos_.code(); }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_CODE_STUBS_H_