Version 3.1.3.

Fixed a bug triggered by functions with huge numbers of declared arguments.

Fixed zap value aliasing a real object - debug mode only.  Issue 866.

Fixed issue where Array.prototype.__proto__ had been set to null.  Issue 1121.

Fixed stability bugs in Crankshaft for x86.
Review URL: http://codereview.chromium.org/6460038

git-svn-id: http://v8.googlecode.com/svn/trunk@6711 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
diff --git a/src/x64/macro-assembler-x64.h b/src/x64/macro-assembler-x64.h
index 8bb3190..1002635 100644
--- a/src/x64/macro-assembler-x64.h
+++ b/src/x64/macro-assembler-x64.h
@@ -920,6 +920,10 @@
 
   void Ret();
 
+  // Return and drop arguments from stack, where the number of arguments
+  // may be bigger than 2^16 - 1.  Requires a scratch register.
+  void Ret(int bytes_dropped, Register scratch);
+
   Handle<Object> CodeObject() { return code_object_; }