[GHC] #11688: Bytestring break failing rewrite to breakByte and failing to eliminate boxing/unboxing

[GHC]

#11688: Bytestring break failing rewrite to breakByte and failing to eliminate
boxing/unboxing
-------------------------------------+-------------------------------------
        Reporter:  alexbiehl         |                Owner:
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.10.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D1980
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by bgamari):

 * status:  new => patch
 * failure:  None/Unknown => Runtime performance bug
 * differential:   => Phab:D1980


Comment:

 Phab:D1980 is a proposed fix. I believe it should be safe to defer
 inlining `Eq` and `Ord`, but this needs confirmation.

 I'm really not sure whether we want to risk pushing this to 8.0, even if
 we do conclude that it's the right way forward.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11688#comment:4>
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