imp-for and native-live-stack

[Matthew Fluet]

Just for fun, I looked at imp-for with -native-live-stack true:

> MLton0 -- mlton-stable -drop-pass localRef -native-live-stack false
> MLton1 -- mlton-stable -drop-pass localRef -native-live-stack true
> MLton2 -- mlton-stable -drop-pass foobar -native-live-stack false
> MLton3 -- mlton-stable -drop-pass foobar -native-live-stack true
> compile time
> benchmark MLton0 MLton1 MLton2 MLton3
> imp-for     0.64   0.62   0.60   0.62
> run time
> benchmark MLton0 MLton1 MLton2 MLton3
> imp-for    13.32   9.51   8.23   6.73
> run time ratio
> benchmark MLton1 MLton2 MLton3
> imp-for     0.71   0.62   0.51
> size
> benchmark MLton0 MLton1 MLton2 MLton3
> imp-for   21,909 21,941 20,485 20,341

That's pretty impressive, even if it is a contrived benchmark.