Support arguments object access from inlined functions.

src/hydrogen-instructions.h

Index: src/hydrogen-instructions.h
diff --git a/src/hydrogen-instructions.h b/src/hydrogen-instructions.h
index fb5879fd90c15cedcbe0ed45dee448ec5d420af7..93e14bead99cc91a3c219df132350f2e459181a5 100644
--- a/src/hydrogen-instructions.h
+++ b/src/hydrogen-instructions.h
@@ -1353,12 +1353,15 @@ class HEnterInlined: public HTemplateInstruction<0> {
                 int arguments_count,
                 FunctionLiteral* function,
                 CallKind call_kind,
-                bool is_construct)
+                bool is_construct,
+                Variable* arguments)
       : closure_(closure),
         arguments_count_(arguments_count),
         function_(function),
         call_kind_(call_kind),
-        is_construct_(is_construct) {
+        is_construct_(is_construct),
+        arguments_(arguments),
+        materializes_arguments_(false) {
   }
 
   virtual void PrintDataTo(StringStream* stream);
@@ -1373,6 +1376,13 @@ class HEnterInlined: public HTemplateInstruction<0> {
     return Representation::None();
   }
 
+  bool materializes_arguments() { return materializes_arguments_; }
+  void set_materializes_arguments(bool materializes_arguments) {
+    materializes_arguments_ = materializes_arguments;
+  }
+
+  Variable* arguments() { return arguments_; }
+
   DECLARE_CONCRETE_INSTRUCTION(EnterInlined)
 
  private:
@@ -1381,18 +1391,28 @@ class HEnterInlined: public HTemplateInstruction<0> {
   FunctionLiteral* function_;
   CallKind call_kind_;
   bool is_construct_;
+  Variable* arguments_;
+  bool materializes_arguments_;
 };
 
 
 class HLeaveInlined: public HTemplateInstruction<0> {
  public:
-  HLeaveInlined() {}
+  explicit HLeaveInlined(bool arguments_pushed)
+      : arguments_pushed_(arguments_pushed) { }
 
   virtual Representation RequiredInputRepresentation(int index) {
     return Representation::None();
   }
 
+  bool arguments_pushed() {
+    return arguments_pushed_;
+  }
+
   DECLARE_CONCRETE_INSTRUCTION(LeaveInlined)
+
+ private:
+  bool arguments_pushed_;
 };