This is in testInterpreter() which is emitting code for a jump table. JSSwitchPtrTag is the right tag to use here.
<rdar://problem/82316967>
Created attachment 436349 [details] proposed patch.
Comment on attachment 436349 [details] proposed patch. r=me
Thanks for the review. Landed in r281534: <http://trac.webkit.org/r281534>.