Don't flatten every time we call CharCodeAt

src/handles.cc

Index: src/handles.cc
diff --git a/src/handles.cc b/src/handles.cc
index 326de8637ad8fa085dff02cfa8eb350ef7a365f4..db7c716cb9d41fb5ed301d72dcd0a09d1f83280c 100644
--- a/src/handles.cc
+++ b/src/handles.cc
@@ -1,4 +1,4 @@
-// Copyright 2009 the V8 project authors. All rights reserved.
+// 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:
@@ -247,6 +247,14 @@ Handle<String> FlattenGetString(Handle<String> string) {
 }
 
 
+uint16_t StringGetMayFlatten(Handle<String> string, int index) {
+  CALL_AND_RETRY(string->GetIsolate(),
+                 string->GetMayFlatten(index),
+                 return static_cast<uint16_t>(Smi::cast(__object__)->value()),
+                 return 0u);
+}
+
+
 Handle<Object> SetPrototype(Handle<JSFunction> function,
                             Handle<Object> prototype) {
   ASSERT(function->should_have_prototype());