[GHC] #14254: The Binary instance for TypeRep smells a bit expensive

[GHC]

#14254: The Binary instance for TypeRep smells a bit expensive
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        Reporter:  dfeuer            |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  8.4.1
       Component:  Compiler          |              Version:  8.2.1
      Resolution:  fixed             |             Keywords:  Typeable
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #14337            |  Differential Rev(s):  Phab:D3998,
       Wiki Page:                    |  Phab:D4082, Phab:D4085
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Changes (by dfeuer):

 * status:  patch => closed
 * resolution:   => fixed


Comment:

 Fixed by bc761ad9c65c7aa62d38db39c59a6c0ae59c8ab8. We now cache the
 `TypeRep` of the kind in each `TrTyCon` and `TrApp` constructor.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14254#comment:18>
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