[Haskell-cafe] Code runs 7x FASTER with profiling

Neil Mayhew neil_mayhew at users.sourceforge.net
Fri Dec 8 13:58:12 UTC 2017

On 2017-12-07 03:33 PM, Brandon Allbery wrote:

    Certainly the behavior here sounds wrong and should be reported.

https://ghc.haskell.org/trac/ghc/ticket/14564 - there’s already been a 
response (from Simon P-J) and it is being treated as a bug.

I get the slowdown with 8.0.2, 8.2.1 and 8.2.2 but 7.10.3 is OK.

Since 8.2.2 is very recent (20 Nov) I didn’t go to the trouble of 
building ghc from source.

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