Fix isEmpty AssemblyHelpers function and add isNotEmpty
Created attachment 394418 [details] Patch
Comment on attachment 394418 [details] Patch LGTM as well. I tested it locally and it is passing all 189 failing tests
*** Bug 209505 has been marked as a duplicate of this bug. ***
Committed r258952: <https://trac.webkit.org/changeset/258952> All reviewed patches have been landed. Closing bug and clearing flags on attachment 394418 [details].
<rdar://problem/60845969>