[GHC] #2132: Optimise nested comparisons

[GHC]

#2132: Optimise nested comparisons
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    Reporter:  simonpj           |        Owner:  simonpj                
        Type:  bug               |       Status:  patch                  
    Priority:  low               |    Milestone:  7.4.1                  
   Component:  Compiler          |      Version:  6.8.2                  
    Keywords:                    |     Testcase:                         
   Blockedby:                    |   Difficulty:  Unknown                
          Os:  Unknown/Multiple  |     Blocking:                         
Architecture:  Unknown/Multiple  |      Failure:  Runtime performance bug
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Comment(by michalt):

 Replying to [comment:20 simonmar]:
 > Another thought: this can be a plugin, and shipped via Hackage, right?

 (I'm assuming you're referring to the optimization, not the idea of sub-
 rules)

 Yes it could be made a plugin. Although I'm not sure it would be used
 by anyone then (personally I use Hackage only when I need some library,
 etc. and probably wouldn't have thought to search for compiler
 optimization, unless it is something really huge).

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2132#comment:21>
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