Last I looked, join points hadn't made it into GHC Core directly - do you know if the ideas in the join points paper were introduced to (mainline) GHC in the en

Last I looked, join points hadn't made it into GHC Core directly - do you know if the ideas in the join points paper were introduced to (mainline) GHC in the end? edit: it looks like there's distinct Core join points now, never mind!