ATTR_USED was only intended for GCC. Also limit it to ENABLE(FTL_NATIVE_CALL_INLINING) since that's the only thing it's needed for.
Created attachment 240852 [details] Patch
Comment on attachment 240852 [details] Patch LGTM
Comment on attachment 240852 [details] Patch Clearing flags on attachment: 240852 Committed r175544: <http://trac.webkit.org/changeset/175544>
All reviewed patches have been landed. Closing bug.