[GHC] #10491: Simplifier explosion with Accelerate

[GHC]

#10491: Simplifier explosion with Accelerate
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        Reporter:  robertce          |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:  7.10.2
       Component:  Compiler          |                 Version:  7.10.1
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:
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Comment (by George):

 Nope, I cannot successfully compile, I reproduce the problem:

 ghc -O2 Slice.hs
 [1 of 1] Compiling Data.Array.Accelerate.CUDA.Array.Slice ( Slice.hs,
 Slice.o )
 ghc: panic! (the 'impossible' happened)
   (GHC version 7.10.1.20150601 for x86_64-apple-darwin):
         Simplifier ticks exhausted
   When trying RuleFired Class op bound
   To increase the limit, use -fsimpl-tick-factor=N (default 100)
   If you need to do this, let GHC HQ know, and what factor you needed
   To see detailed counts use -ddump-simpl-stats
   Total ticks: 1668404

 Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10491#comment:5>
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