[GHC] #7163: nofib/real/gg is miscompiled at -O1

[GHC]

#7163: nofib/real/gg is miscompiled at -O1
---------------------------------+------------------------------------------
    Reporter:  michalt           |       Owner:  igloo                      
        Type:  bug               |      Status:  new                        
    Priority:  highest           |   Milestone:  7.8.1                      
   Component:  Compiler          |     Version:  7.7                        
    Keywords:                    |          Os:  Unknown/Multiple           
Architecture:  Unknown/Multiple  |     Failure:  Incorrect result at runtime
  Difficulty:  Unknown           |    Testcase:                             
   Blockedby:                    |    Blocking:                             
     Related:                    |  
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Changes (by simonmar):

  * owner:  => igloo
  * difficulty:  => Unknown
  * priority:  normal => highest
  * milestone:  => 7.8.1


Comment:

 I traced this to the callerSaves changes made by igloo recently, he's
 currently on the case.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7163#comment:1>
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