isCacheableArrayLength should return true for undecided arrays
Created attachment 339581 [details] Patch
Comment on attachment 339581 [details] Patch r=me
Comment on attachment 339581 [details] Patch Clearing flags on attachment: 339581 Committed r231375: <https://trac.webkit.org/changeset/231375>
All reviewed patches have been landed. Closing bug.
<rdar://problem/39987843>