[GHC] #7620: Via-C unregisterised build fails for integer-simple

[GHC]

#7620: Via-C unregisterised build fails for integer-simple
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    Reporter:  singpolyma                         |       Owner:                     
        Type:  bug                                |      Status:  patch              
    Priority:  normal                             |   Milestone:                     
   Component:  Compiler                           |     Version:  7.7                
    Keywords:  unregistered via-c integer-simple  |          Os:  Unknown/Multiple   
Architecture:  Unknown/Multiple                   |     Failure:  Building GHC failed
  Difficulty:  Unknown                            |    Testcase:                     
   Blockedby:                                     |    Blocking:  7623               
     Related:                                     |  
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Comment(by simonmar):

 The patch is a bit heavy-handed - the special case for negative offsets is
 not an optimisation, it's there to make the generated C easier to read,
 and it's pretty important (IMHO).

 It would be good to look into @igloo's concerns too while we're here.  I'm
 also wondering why my unregisterised builds using `integer-simple` didn't
 run into this...

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7620#comment:11>
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