[GHC] #14626: No need to enter a scrutinised value

[GHC]

#14626: No need to enter a scrutinised value
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        Reporter:  heisenbug         |                Owner:  heisenbug
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.2.2
      Resolution:                    |             Keywords:  performance
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13861            |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by simonpj):

 > Here the first (banged) field of SDC gets initialised to a global
 closure. Clearly it is non-tagged and not evaluated.

 That is very wrong.

 Can you show the `-ddump-simpl -ddump-stg` of the module that allocates an
 SDC closure with a non-tagged, non-evaluated argument?  Thanks.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14626#comment:35>
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