Merge arguments branch to bleeding edge (second try).

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index 6a7b6616df26be410f667c59aa04ab0a2da75b97..0ed37017b14dcd62e68e8d466f6f2b6282d4d93b 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -632,7 +632,8 @@ class ArgumentsAccessStub: public CodeStub {
  public:
   enum Type {
     READ_ELEMENT,
-    NEW_NON_STRICT,
+    NEW_NON_STRICT_FAST,
+    NEW_NON_STRICT_SLOW,
     NEW_STRICT
   };
 
@@ -646,20 +647,9 @@ class ArgumentsAccessStub: public CodeStub {
 
   void Generate(MacroAssembler* masm);
   void GenerateReadElement(MacroAssembler* masm);
-  void GenerateNewObject(MacroAssembler* masm);
-
-  int GetArgumentsBoilerplateIndex() const {
-  return (type_ == NEW_STRICT)
-      ? Context::STRICT_MODE_ARGUMENTS_BOILERPLATE_INDEX
-      : Context::ARGUMENTS_BOILERPLATE_INDEX;
-  }
-
-  int GetArgumentsObjectSize() const {
-    if (type_ == NEW_STRICT)
-      return Heap::kArgumentsObjectSizeStrict;
-    else
-      return Heap::kArgumentsObjectSize;
-  }
+  void GenerateNewStrict(MacroAssembler* masm);
+  void GenerateNewNonStrictFast(MacroAssembler* masm);
+  void GenerateNewNonStrictSlow(MacroAssembler* masm);
 
   const char* GetName() { return "ArgumentsAccessStub"; }