[GHC] #13719: checkFamInstConsistency dominates compile time

[GHC]

#13719: checkFamInstConsistency dominates compile time
-------------------------------------+-------------------------------------
        Reporter:  niteria           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  8.3
  checker)                           |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13092, #13099,   |  Differential Rev(s):  phab:D3600,
  #12191                             |  phab:D3602
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"17fef390c575c153c7e70438783e7f8fee62e451/ghc" 17fef39/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="17fef390c575c153c7e70438783e7f8fee62e451"
 Testcase for #13719

 I expect to improve this, a testcase will ensure
 it doesn't regress.

 Test Plan: ./validate

 Reviewers: simonmar, austin, bgamari

 Reviewed By: bgamari

 Subscribers: rwbarton, thomie

 GHC Trac Issues: #13719

 Differential Revision: https://phabricator.haskell.org/D3600
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13719#comment:4>
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