[vector] #32: Performance of concatMap and O2/Odph

vector vector at projects.haskell.org
Fri Oct 22 08:55:10 EDT 2010

#32: Performance of concatMap and O2/Odph
Reporter:  choener   |        Owner:       
    Type:  defect    |       Status:  new  
Priority:  critical  |    Milestone:  0.7.1
 Version:  0.6       |   Resolution:       
Keywords:            |  
Comment (by rl):

 There's good news and bad news here. With GHC 7, there is practically no
 performance difference between the two functions. But both functions are
 slower when compiled with GHC 7 than the first one when compiled with GHC
 6.12. I need to investigate more.

Ticket URL: <http://trac.haskell.org/vector/ticket/32#comment:4>
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