[GHC] #8731: long compilation time for module with large data type and partial record selectors

[GHC]

#8731: long compilation time for module with large data type and partial record
selectors
-------------------------------------+-------------------------------------
        Reporter:  carter            |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.8.1-rc1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by bgamari):

 Looks like this may be related to instance deriving, perhaps a duplicate
 of #10980.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8731#comment:12>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler