[GHC] #13227: Loss of full laziness in mapFB

[GHC]

#13227: Loss of full laziness in mapFB
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        Reporter:  simonpj           |                Owner:  nomeata
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      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:D3067
       Wiki Page:                    |
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Comment (by Joachim Breitner <mail@…>):

 In [changeset:"09b8332df92428fe1be780c8a6bbcdd4c341a50d/ghc"
 09b8332d/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="09b8332df92428fe1be780c8a6bbcdd4c341a50d"
 Get rid of ProbOneShot

 This fixes #13227. It remains to be seen what the performance impacts
 are. Pushing as a branch to get perf.haskell.org answer that for us.

 Differential Revision: https://phabricator.haskell.org/D3067
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13227#comment:10>
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