Hah! I had misread the signatures in the Core output. I'm getting exactly
the dictionary removal I wanted. Fantastic!
I'm attaching my sample source code and the Core it produces.
Sorry for the misdirection, and kudos for specialis/zation in GHC!
-- Conal
On Thu, Jan 28, 2016 at 4:54 AM, Simon Peyton Jones
Aggressive inlining is one way, but specialisation ought to get a long way, and makes fewer copies of the specialised code.
It’s hard to help without a concrete example
Simon
*From:* ghc-devs [mailto:ghc-devs-bounces@haskell.org] *On Behalf Of *Conal Elliott *Sent:* 28 January 2016 00:05 *To:* ghc-devs@haskell.org *Subject:* More aggressive dictionary removal?
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