[GHC] #8347: Add a Strict LANGUAGE pragma

[GHC]

#8347: Add a Strict LANGUAGE pragma
-------------------------------------+-------------------------------------
        Reporter:  tibbe             |                   Owner:  adamse
            Type:  feature request   |                  Status:  new
        Priority:  normal            |               Milestone:  7.12.1
       Component:  Compiler          |                 Version:  7.6.3
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
                                     |  Phab:D1033, Phab:D1142
-------------------------------------+-------------------------------------

Comment (by tibbe):

 Only the `StrictData` part is done. The more general `Strict` pragma (i.e.
 also dealing with bindings) is still waiting for review
 (https://phabricator.haskell.org/D1142). If you haven't taken a look
 already, please do so.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8347#comment:8>
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