[GHC] #9132: takeWhile&C. still not fusible

[GHC]

#9132: takeWhile&C. still not fusible
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              Reporter:              |            Owner:  skeuchel
  Blaisorblade                       |           Status:  patch
                  Type:  bug         |        Milestone:  7.10.1
              Priority:  normal      |          Version:  7.8.3
             Component:  Core        |         Keywords:  fusion
  Libraries                          |     Architecture:  Unknown/Multiple
            Resolution:              |       Difficulty:  Moderate (less
      Operating System:              |  than a day)
  Unknown/Multiple                   |       Blocked By:
       Type of failure:  Runtime     |  Related Tickets:
  performance bug                    |
             Test Case:              |
              Blocking:              |
Differential Revisions:  Phab:D322   |
-------------------------------------+-------------------------------------

Comment (by Joachim Breitner <mail@…>):

 In [changeset:"d14d3f92d55a352db7faf62939127060716c4694/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="d14d3f92d55a352db7faf62939127060716c4694"
 Make Data.List.takeWhile fuse: fix #9132

 Summary:
 Rewrites takeWhile to a build/foldr form; fuses repeated
 applications of takeWhile.

 Reviewers: nomeata, austin

 Reviewed By: nomeata

 Subscribers: thomie, carter, ezyang, simonmar

 Projects: #ghc

 Differential Revision: https://phabricator.haskell.org/D322

 GHC Trac Issues: #9132
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9132#comment:23>
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