We can use CopiedSpace for their backing stores instead of malloc.
Created attachment 229832 [details]
This neutral on the JS benchmarks we track.
This is a 1.5% speedup on dromaeo.
(In reply to comment #3)
> This is a 1.5% speedup on dromaeo.
Comment on attachment 229832 [details]
Clearing flags on attachment: 229832
Committed r167641: <http://trac.webkit.org/changeset/167641>
All reviewed patches have been landed. Closing bug.