[GHC] #12791: Superclass methods could be more aggressively specialised.

[GHC]

#12791: Superclass methods could be more aggressively specialised.
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        Reporter:  mpickering        |                Owner:  danharaj
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D2714
       Wiki Page:                    |
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Comment (by ryantrinkle):

 I'm afraid it's my fault that these things have gotten mixed up.  I asked
 Dan to look into this stuff in the hope that it would give some benefit in
 the Reflex case, but he found today that it doesn't quite fit.  You're
 absolutely right that the Writer case is still useful.

 You're absolutely right about putting specialization under separate
 tickets, and we'll be doing that if we find anything in that vein.  In the
 mean time, if Dan's work so far helps in the MonadWriter case, we'll try
 to get that wrapped up for this ticket soon.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12791#comment:24>
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