[GHC] #5780: -faggressive-primops change caused a failure in perf/compiler/parsing001

[GHC]

#5780: -faggressive-primops change caused a failure in perf/compiler/parsing001
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    Reporter:  simonmar          |       Owner:                  
        Type:  bug               |      Status:  new             
    Priority:  high              |   Milestone:  7.6.1           
   Component:  Compiler          |     Version:  7.2.2           
    Keywords:                    |          Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown    
  Difficulty:  Unknown           |    Testcase:                  
   Blockedby:                    |    Blocking:                  
     Related:                    |  
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 The commit 601c983dd0bada6b49bdadd8f172fd4eacac4b0c apparently caused a
 regression in perf/compiler/parsing001, so I'm reverting it pending
 investigation.  The patch should have made no changes to performance,
 because the new functionality was only enabled by a new flag.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5780>
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