[GHC] #9646: Simplifer non-determinism leading to 8 fold difference in run time performance

[GHC]

#9646: Simplifer non-determinism leading to 8 fold difference in run time
performance
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        Reporter:  erikd             |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:  7.10.1
       Component:  Compiler          |                 Version:  7.8.3
      Resolution:                    |                Keywords:
Operating System:  Linux             |            Architecture:  x86_64
 Type of failure:  Runtime           |  (amd64)
  performance bug                    |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Changes (by thomie):

 * status:  closed => new
 * resolution:  fixed =>


Comment:

 Replying to [comment:14 jstolarek]:
 > It would be great if we could have a test for this so we're sure this
 does not regress again. I looked at the repo and the code to reproduce
 this is pretty big. I wonder if it could be reduced further to include it
 in the testsuite.

 Good idea. Reopening.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9646#comment:15>
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