[GHC] #13279: Check known-key lists

[GHC]

#13279: Check known-key lists
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        Reporter:  dfeuer            |                Owner:  dfeuer
            Type:  task              |               Status:  patch
        Priority:  normal            |            Milestone:  8.8.1
       Component:  Compiler          |              Version:  8.1
      Resolution:                    |             Keywords:  newcomer
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D5160
       Wiki Page:                    |
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Comment (by Krzysztof Gogolewski <krz.gogolewski@…>):

 In [changeset:"45befe27495b1a7bca037b6a3eedf2474a0204c8/ghc" 45befe2/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="45befe27495b1a7bca037b6a3eedf2474a0204c8"
 Use predefined known-key names when possible

 Summary:
 For certain entities in 'PrelNames', we were creating new 'Name's
 instead of reusing the ones already defined. Easily fixed.

 Test Plan: ./validate

 Reviewers: dfeuer, RyanGlScott, bgamari, simonpj

 Reviewed By: simonpj

 Subscribers: simonpj, rwbarton, carter

 GHC Trac Issues: #13279

 Differential Revision: https://phabricator.haskell.org/D5160
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13279#comment:8>
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