[GHC] #9736: Constant folding rules are wrong for GHCJS

[GHC]

#9736: Constant folding rules are wrong for GHCJS
-------------------------------------+-------------------------------------
       Reporter:  luite              |                   Owner:  luite
           Type:  bug                |                  Status:  new
       Priority:  normal             |               Milestone:  7.10.1
      Component:  Compiler           |                 Version:  7.8.3
       Keywords:                     |        Operating System:
   Architecture:  Unknown/Multiple   |  Unknown/Multiple
     Difficulty:  Unknown            |         Type of failure:
     Blocked By:                     |  None/Unknown
Related Tickets:                     |               Test Case:
                                     |                Blocking:
                                     |  Differential Revisions:
-------------------------------------+-------------------------------------
 GHCJS currently has a complete copy of PrelRules to work around some
 issues where the rules depend on the build environment instead of the
 target.

 - shiftRightLogical
 - removeOp32

 I'd like to get rid of the copy for 7.10

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9736>
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