[GHC] #13059: High memory usage during compilation

[GHC]

#13059: High memory usage during compilation
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        Reporter:  domenkozar        |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.2-rc2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:  x86_64
 Type of failure:  Compile-time      |  (amd64)
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by dfeuer):

 Per Ryan Scott's advice, I checked `-ddump-spices`. The splices define
 something like 48 instances without bodies. He suggests I copy/paste the
 splices in and strip down the package until only the interesting bits
 remain. The only other thing I can think of is going for `-dverbose-
 core2core` and trying to find the right spots. Figure it out tomorrow.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13059#comment:10>
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