Cache optimized code for OSR.

BUG=v8:2637
LOG=N
R=titzer@chromium.org, verwaest@chromium.org

Review URL: https://codereview.chromium.org/101853003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18410 ce2b1a6d-e550-0410-aec6-3dcde31c8c00