[GHC] #7155: Fails to build on powerpc with -Werror : The import of `CmmCallConv' is redundant

[GHC]

#7155: Fails to build on powerpc with -Werror  : The import of `CmmCallConv' is
redundant
---------------------------------+------------------------------------------
 Reporter:  erikd                |          Owner:          
     Type:  bug                  |         Status:  new     
 Priority:  normal               |      Component:  Compiler
  Version:  7.7                  |       Keywords:          
       Os:  Unknown/Multiple     |   Architecture:  powerpc 
  Failure:  Building GHC failed  |       Testcase:          
Blockedby:                       |       Blocking:          
  Related:                       |  
---------------------------------+------------------------------------------
Changes (by erikd):

  * failure:  None/Unknown => Building GHC failed


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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7155#comment:2>
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