[GHC] #15192: Refactor of Coercion

[GHC]

#15192: Refactor of Coercion
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        Reporter:  ningning          |                Owner:  ningning
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4747
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"e5f3de2cf2f52e7079cbee624ae91beecf663f87/ghc" e5f3de2/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="e5f3de2cf2f52e7079cbee624ae91beecf663f87"
 update core-spec for GRefl and re-factored Refl

 Ticket #15192 introduced the generalized reflexive coercion `GRefl` and
 nominal reflexive `Refl`, and removed `CoherenceCo`. Update core-spec
 accordingly.  Not sure about notations though; suggestions on more
 concise notations would be great.

 Test Plan: Read core-spec.pdf

 Reviewers: goldfire, bgamari

 Reviewed By: goldfire

 Subscribers: rwbarton, thomie, carter

 Differential Revision: https://phabricator.haskell.org/D4984
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15192#comment:23>
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