[GHC] #8832: Constant-folding regression wrt `clearBit (bit 0) 0 `

[GHC]

#8832: Constant-folding regression wrt `clearBit (bit 0) 0 `
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        Reporter:  hvr                           |            Owner:
            Type:  bug                           |  simonpj
        Priority:  normal                        |           Status:  new
       Component:  Compiler                      |        Milestone:  7.8.1
      Resolution:                                |          Version:
Operating System:  Unknown/Multiple              |  7.8.1-rc2
 Type of failure:  Runtime performance bug       |         Keywords:
       Test Case:                                |     Architecture:
  simplCore/should_compile/T8832                 |  Unknown/Multiple
        Blocking:                                |       Difficulty:
                                                 |  Unknown
                                                 |       Blocked By:
                                                 |  Related Tickets:
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Changes (by simonpj):

 * testcase:   => simplCore/should_compile/T8832


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8832#comment:8>
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