[GHC] #10980: Deriving Read instance from datatype with N fields leads to N^2 code size growth

[GHC]

#10980: Deriving Read instance from datatype with N fields leads to N^2 code size
growth
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        Reporter:  slyfox            |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.10.2
      Resolution:                    |             Keywords:  deriving-perf
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13213 #14364     |  Differential Rev(s):
  #7258                              |
       Wiki Page:                    |
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Changes (by bgamari):

 * related:   => #13213 #14364 #7258


Comment:

 See also: #14364, which tries to knock a factor off of the code size of
 derived `Read` instances.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10980#comment:18>
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