[GHC] #9927: Should simplifier try more iterations?

[GHC]

#9927: Should simplifier try more iterations?
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        Reporter:  goldfire          |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Build System      |                 Version:  7.11
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by simonpj):

 You mean this
 {{{
 WARNING: file compiler/simplCore/SimplCore.hs, line 600
   Simplifier bailing out after 4 iterations [2187, 49, 3, 1]
 }}}
 The numbers are the numbers of transformations carried out in each
 iteration.  If you see `[blah, 1,1,1]` it's clue that maybe some
 transformation isn't making progress and is happening repeatedly, or
 generally that the cascade of transformations isn't working well.
 Increasing the iteration count can show this up even more vividly.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9927#comment:5>
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