The macro LLINT_CALL_RETURN() in LLIntSlowPaths.cpp is popping the call frame and returning that call frame to the caller. llint_slow_path_handle_exception already unwinds the stack via a call to genericUnwind().
Created attachment 219552 [details] Patch
Comment on attachment 219552 [details] Patch r=me
Committed r160783: <http://trac.webkit.org/changeset/160783>