[GHC] #10491: Regression, simplifier explosion with Accelerate, cannot compile, increasing tick factor is not a workaround

GHC ghc-devs at haskell.org
Thu Jun 18 11:33:57 UTC 2015


#10491: Regression, simplifier explosion with Accelerate, cannot compile,
increasing tick factor is not a workaround
-------------------------------------+-------------------------------------
        Reporter:  robertce          |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  highest           |               Milestone:  7.10.2
       Component:  Compiler          |                 Version:  7.10.1
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  performance bug                    |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by robertce):

 Replying to [comment:17 bgamari]:
 > What I'm a bit unclear on is that the bug description seems to suggest
 this behavior began at some point since the release of 7.10.1,
 >
 > > This has only happened since the release of 7.10.1 and it appears to
 still be happening in the ghc-7.10 branch.
 >
 > However I am finding that the commits prior to the 7.10.1 release also
 exhibit the behavior.

 I'm not surprised it's also happening with commits prior to 7.10.1. By
 saying it's only happened since the release of 7.10.1, I was speaking in
 release terms. It works with 7.8.4, but not 7.10.1 or the current 7.10
 branch.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10491#comment:18>
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