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

[GHC]

#10491: Regression, simplifier explosion with Accelerate, cannot compile,
increasing tick factor is not a workaround
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        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 George):

 -fno-specialise does not seem to solve the problem
 ( time ghc -v -fsimpl-tick-factor=150 -O2 Slice.hs ) > t.out 2>&1 &
 tail t.out
 {{{
 Result size of Float inwards
   = {terms: 4,218,587, types: 4,087,814, coercions: 113,719}
 *** Called arity analysis:
 Result size of Called arity analysis
   = {terms: 4,218,587, types: 4,087,814, coercions: 113,719}
 *** Simplifier:
 Result size of Simplifier iteration=1
   = {terms: 4,217,640, types: 4,085,011, coercions: 111,731}
 Result size of Simplifier iteration=2
   = {terms: 4,217,311, types: 4,083,869, coercions: 110,905}
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10491#comment:24>
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