[GHC] #8835: 7.6.3 vs 7.8-RC performance regression

[GHC]

#8835: 7.6.3 vs 7.8-RC performance regression
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        Reporter:  cbm80                    |            Owner:
            Type:  bug                      |           Status:  new
        Priority:  normal                   |        Milestone:
       Component:  Compiler                 |          Version:  7.8.1-rc2
      Resolution:                           |         Keywords:
Operating System:  Linux                    |     Architecture:  x86_64
 Type of failure:  Runtime performance bug  |  (amd64)
       Test Case:                           |       Difficulty:  Unknown
        Blocking:                           |       Blocked By:
                                            |  Related Tickets:  #8814
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Comment (by simonpj):

 Are you sure that this bug is the same as #8814?  When I look at the git
 repo in the Description at the top, the cabal file doesn't mention
 attoparsec.

 Can anyone take the time to find out why the performance differs so much,
 and to boil out a test case?

 Simon

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8835#comment:7>
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