This guarantees that we set the high bits of the register with the correct tag.
Created attachment 236336 [details] Patch
Comment on attachment 236336 [details] Patch r=me
Comment on attachment 236336 [details] Patch Clearing flags on attachment: 236336 Committed r172398: <http://trac.webkit.org/changeset/172398>
All reviewed patches have been landed. Closing bug.