Merge SVN r6485 to trunk.

This change disables all code motion on the final optimization
attempt.  It fixes a crash in generated code.

Review URL: http://codereview.chromium.org/6249018

git-svn-id: http://v8.googlecode.com/svn/trunk@6486 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
3 files changed