[GHC] #11196: TypeInType performance regressions

[GHC]

#11196: TypeInType performance regressions
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           Reporter:  goldfire       |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  7.10.2
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 This ticket is to track the handful of performance regressions seen with
 the addition of `TypeInType`. It is quite possibly a good idea to break
 these out into separate tickets, but until we investigate, they're all
 bundled here.

 The regressions are:
   * T3064, bytes allocated up by 14.9%

 (will update description)

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11196>
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