[GHC] #12970: Add default implementation for Bits.bitSize

[GHC]

#12970: Add default implementation for Bits.bitSize
-------------------------------------+-------------------------------------
        Reporter:  txnull            |                Owner:  dfeuer
            Type:  feature request   |               Status:  patch
        Priority:  high              |            Milestone:  8.6.1
       Component:  libraries/base    |              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:D3723,
       Wiki Page:                    |  Phab:D4857
-------------------------------------+-------------------------------------

Comment (by Ben Gamari <ben@…>):

 In [changeset:"4cd552184cbc5bed33da21497537df4e400a1a2f/ghc" 4cd5521/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="4cd552184cbc5bed33da21497537df4e400a1a2f"
 base: Add default implementation for Data.Bits.bitSize

 Fixes #12970 and will provide a reasonable migration path for the
 eventual remove of this function.

 Test Plan: Validate

 Reviewers: ekmett, hvr

 Subscribers: rwbarton, thomie, carter

 GHC Trac Issues: #12970

 Differential Revision: https://phabricator.haskell.org/D4857
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12970#comment:22>
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