[Haskell-cafe] Re: speed: ghc vs gcc
daniel.is.fischer at web.de
Sat Feb 21 19:11:19 EST 2009
Am Sonntag, 22. Februar 2009 00:50 schrieb Bulat Ziganshin:
> Hello Daniel,
> Sunday, February 22, 2009, 2:36:57 AM, you wrote:
> > You're referring to the freak result of Dan Doel?
> > Come on, be serious, please. I have a Haskell result that runs in 7ms,
> > too. Just use a rewrite rule and hey presto :)
> Dan, why you have not said the same about test where ghc becomes 4x
> faster than gcc?
Because, as has been explained several times to you, it was not a test of
ghc's code generation vs. gcc's, and it was NOT meant to be. It was
explicitely an investigation of how effective an improvement loop-unrolling
> > Bulat, your obsession has become obnoxious and ridiculous.
> i really, really wonder why cheating on gcc side is "obsession that
> become obnoxious and ridiculous" while cheating on ghc side is ok for
> you. can you explain?
You have one case where gcc calculated the result for an extremely simple
programme during the compilation and you use that to say that gcc's code is
routinely 50-150 times faster than ghc's. Very convincing.
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