[GHC] #11196: TypeInType performance regressions

[GHC]

#11196: TypeInType performance regressions
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        Reporter:  goldfire          |                Owner:
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.11
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by thomie):

 Also:
 {{{
 buildtime/make  1222    + 13.67%        1389    seconds
 }}}

 Source:
 https://perf.haskell.org/ghc/#revision/b5d5d83122c93c2a25839127edfd6b2df7ed6928
 (if that link doesn't include the commit "Add kind equalities to GHC.",
 try
 https://perf.haskell.org/ghc/#revision/6746549772c5cc0ac66c0fce562f297f4d4b80a2).

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11196#comment:4>
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