This ticket exists to coordinate work on Nick Frisby's late lambda-lifting optimisation.
Wiki page: LateLamLift. All the details are here.
Branch in GHC repo: wip/llf
* #9279: local closure remains in final program
* #9374: static argument transformation
* #5945 (closed) (closed as dup, but with useful example)
* #11284 (closed) (closed as dup, but with useful example)