This means supporting:
GetById without exceptions
GetById with exceptions
PutById without exceptions
PutById with exceptions
We already have late slow paths and OSR.
Landed in http://trac.webkit.org/changeset/194067
Lol oops, closed this incorrectly.
(In reply to comment #1)
> Landed in http://trac.webkit.org/changeset/194067
That was a mistake. This revision has nothing to do with this bug.
We did enough of this, future improvements will be tracked by https://bugs.webkit.org/show_bug.cgi?id=154319