Changed saved context stack to using direct pointers. Before we would...

src/list.h

 // Copyright 2006-2009 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 44 matching lines @@
   INLINE(void operator delete(void* p, size_t)) { return P::Delete(p); }
 
   // Returns a reference to the element at index i.  This reference is
   // not safe to use after operations that can change the list's
   // backing store (eg, Add).
   inline T& operator[](int i) const  {
     ASSERT(0 <= i && i < length_);
     return data_[i];
   }
   inline T& at(int i) const  { return operator[](i); }
-  inline T& last() const {
-    return at(length_ - 1);
-  }
+  inline T& last() const { return at(length_ - 1); }
+  inline T& first() const { return at(0); }
 
   INLINE(bool is_empty() const) { return length_ == 0; }
   INLINE(int length() const) { return length_; }
   INLINE(int capacity() const) { return capacity_; }
 
   Vector<T> ToVector() { return Vector<T>(data_, length_); }
 
   Vector<const T> ToConstVector() { return Vector<const T>(data_, length_); }
 
   // Adds a copy of the given 'element' to the end of the list,
@@ skipping 62 matching lines @@
 
 // Add() is inlined, ResizeAdd() called by Add() is inlined except for
 // Lists of FrameElements, and ResizeAddInternal() is inlined in ResizeAdd().
 template <>
 void List<FrameElement,
           FreeStoreAllocationPolicy>::ResizeAdd(const FrameElement& element);
 
 } }  // namespace v8::internal
 
 #endif  // V8_LIST_H_