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List: haskell-cafe
Subject: Re: [Haskell-cafe] speed: ghc vs gcc
From: Khudyakov Alexey <alexey.skladnoy () gmail ! com>
Date: 2009-02-20 23:07:39
Message-ID: 200902210207.39066.alexey.skladnoy () gmail ! com
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On Friday 20 February 2009 16:29:29 Bulat Ziganshin wrote:
> Hello haskell-cafe,
>
> since there are no objective tests comparing ghc to gcc, i made my own
> one. these are 3 programs, calculating sum in c++ and haskell:
>
> main = print $ sum[1..10^9::Int]
>
> ... skipped ...
The discussion is mostly about low level optimizations such as loop unrolling
etc.
I have another question. Why shouldn't compiler realize that `sum [1..10^9]'
is constant and thus evaluate it at compile time?
--
Khudakov Alexey
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