I don't think this is still the case. Roman, do you remember? - Don jason.dusek:
I was reading the stream fusion code today and came across a comment stating that single element dictionaries interacted poorly with GHC's optimizer:
class Unlifted a where
[...] expose [...]
-- | This makes GHC's optimiser happier; it sometimes produces really bad -- code for single-method dictionaries -- unlifted_dummy [...]
A cursory search on GHC's Trac shows no corresponding bug; is this no longer a problem? A small problem? I would like to know more about it.
-- Jason Dusek
|...stream fusion code...| http://www.cse.unsw.edu.au/~dons/code/streams/list/Data/Stream.hs _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users