Re: [Haskell-cafe] types and number of evaluation steps

18 Feb 2012


      Am 18.02.2012 um 14:38 schrieb Roman Cheplyaka:
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* Holger Siegel  [2012-02-18 12:52:08+0100]
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You cannot. Common subexpression elimination is done by GHC very
conservatively, because it can not only affect impure programs: it can
also affects strictness/lazyness and worsen memory usage of pure code.
Like the HaskellWiki says: "If you care about CSE, do it by hand."
How can it affect strictness or laziness?
I don't know. HaskellWiki says so: http://www.haskell.org/haskellwiki/GHC_optimisations#Common_subexpression_el...