[GHC] #9345: Data.List.inits is extremely slow

[GHC]

#9345: Data.List.inits is extremely slow
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              Reporter:  dfeuer      |            Owner:  ekmett
                  Type:  bug         |           Status:  patch
              Priority:  high        |        Milestone:  7.8.4
             Component:  Core        |          Version:  7.8.3
  Libraries                          |         Keywords:
            Resolution:              |     Architecture:  Unknown/Multiple
      Operating System:              |       Difficulty:  Easy (less than 1
  Unknown/Multiple                   |  hour)
       Type of failure:  Runtime     |       Blocked By:
  performance bug                    |  Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:  Phab:D329   |
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Changes (by dfeuer):

 * milestone:  7.10.1 => 7.8.4


Comment:

 The `initsR` version, at least, can slip into 7.8.4 without any ripples.
 Changing milestone back per thoughtpolice.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9345#comment:31>
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