[GHC] #9661: Branchless ==# is compiled to branchy code

[GHC]

#9661: Branchless ==# is compiled to branchy code
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        Reporter:  dfeuer            |                Owner:  bgamari
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.9
      Resolution:                    |             Keywords:  datacon-tags
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D854
       Wiki Page:                    |
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Comment (by dfeuer):

 This doesn't really have much to do with datacon tags, but it seems to
 relate to several of those tickets, so I tagged it.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9661#comment:30>
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