DFG_JIT is not currently enabled in GTK platform for ARMv7/Thumb processors, though it should work fine.
Enabling it, the sunspider tests shows a clear performance improvement.
Created attachment 209168 [details]
Comment on attachment 209168 [details]
Clearing flags on attachment: 209168
Committed r154325: <http://trac.webkit.org/changeset/154325>
All reviewed patches have been landed. Closing bug.