[GHC] #4965: 60% performance regression in continuation-heavy code between 6.12 and 7

[GHC]

#4965: 60% performance regression in continuation-heavy code between 6.12 and 7
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    Reporter:  bos               |        Owner:  igloo                  
        Type:  bug               |       Status:  new                    
    Priority:  high              |    Milestone:  7.2.1                  
   Component:  Compiler          |      Version:  7.0.1                  
    Keywords:                    |     Testcase:                         
   Blockedby:                    |   Difficulty:                         
          Os:  Unknown/Multiple  |     Blocking:                         
Architecture:  Unknown/Multiple  |      Failure:  Runtime performance bug
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Changes (by simonpj):

  * owner:  => igloo


Comment:

 Well it's a real pity about 7.0.3, but I rather doubt it's worth the
 upheaval of yet another release.

 I've made a new ticket #5096 for the profiling question.

 Ian: it'd be ideal to have a `perf/` test, so that we'll know if this one
 goes bad on us again? But there is a big wad of library code involved, so
 maybe it's infeasible.  Any opinions anyone?

 And then, I suppose, close.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4965#comment:14>
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