Update ReceiverObjectNeedsWriteBarrier to include HFastLiteral

This will prevent unnecessary write barriers for literals.
BUG=none
TEST=none

Review URL: https://codereview.chromium.org/11143005
Patch from Derek J Conrod <dconrod@codeaurora.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12823 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/hydrogen-instructions.h

@@ -3917,7 +3917,8 @@ inline bool StoringValueNeedsWriteBarrier(HValue* value) {
 
 inline bool ReceiverObjectNeedsWriteBarrier(HValue* object,
                                             HValue* new_space_dominator) {
-  return !object->IsAllocateObject() || (object != new_space_dominator);
+  return (!object->IsAllocateObject() && !object->IsFastLiteral()) ||
+         (object != new_space_dominator);
 }