More aggressive dictionary removal?

Conal Elliott conal at
Thu Jan 28 00:04:36 UTC 2016

I'm looking for pointers on getting GHC to eliminate more overloading &
polymorphism. I think this sort of thing mainly happens in the Specialise
module. The default GHC flag settings get me a couple levels of
monomorphization and dictionary removal, but I want to go further. I've
tried -fspecialise-aggressively, but it didn't seem to make a difference,
and I haven't found this flag described in the GHC user's guide. Anyone
have pointers to more information?

Thanks, - Conal
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