[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:  thoughtpolice
                  Type:  bug         |           Status:  new
              Priority:  high        |        Milestone:  7.10.1
             Component:  Compiler    |          Version:  7.8.1-rc2
            Resolution:              |         Keywords:
      Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple                   |       Difficulty:  Unknown
       Type of failure:  Runtime     |       Blocked By:
  performance bug                    |  Related Tickets:
             Test Case:              |
  simplCore/should_compile/T8832     |
              Blocking:              |
Differential Revisions:              |
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Comment (by rwbarton):

 Is this what you had in mind, Simon? Without the `#ifdef`s the grep output
 on a 32-bit system would contain uniques, so I couldn't just add a
 `.stdout-ws-32` file.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8832#comment:16>
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