[GHC] #8691: Investigate recent 32bit compiler performance regressions

[GHC]

#8691: Investigate recent 32bit compiler performance regressions
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       Reporter:         |             Owner:
  thoughtpolice          |            Status:  new
           Type:  bug    |         Milestone:  7.8.1
       Priority:         |           Version:  7.7
  normal                 |  Operating System:  Unknown/Multiple
      Component:         |   Type of failure:  Compile-time performance bug
  Compiler               |         Test Case:
       Keywords:         |          Blocking:
   Architecture:         |
  Unknown/Multiple       |
     Difficulty:         |
  Unknown                |
     Blocked By:         |
Related Tickets:         |
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 In c5088e299a66109346057afc151c33e47b850b92 I tweaked the numbers for the
 x86/Linux build to get them to pass for the RC, but some of these look
 pretty bad.

 Most of them shot up quite a bit. Some of them I don't think were very
 recent (modification date unspecified, etc.) A few others had updates as
 early as November, so something has clearly slipped on 32bit platforms
 here.

 I spent a tiny amount of time investigating, but didn't get very far. I'm
 not holding the RC for these, but it's worth investigating when we get a
 chance.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8691>
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