On Sun, Jul 08, 2007 at 10:40:10PM +0400, Bulat Ziganshin wrote: > Hello Andrew, > > Sunday, July 8, 2007, 7:12:38 PM, you wrote: > >>> (Realistically though. My program takes a [Word8] and turns it into a > >>> [Bool] before running a parser over it. The GHC optimiser doesn't really > >>> stand a hope in hell of optimising that into a program that reads a > >>> machine > >>> word into a CPU register and starts playing with bit flips on it...) > >>> > >> > >> Actually, if you're very lucky (fusion is just as hard in Haskell as it > >> is in real life), it *does*. It seems to fit nicely into the > >> stream-fusion framework. > >> > > > Ooo... really? That's pretty impressive...(!) > > it's our collective tale for bringing new haskellers. i bet that > Stefan never seen asm code generated by ghc :)
If you check the list archives, you'll see that I've been a major contributer to quite a few threads on the GHC code generator, and I posted to the JHC list months ago. Also, I said it would be read into a register, I never said it wouldn't be spilled two instructions later ;) Stefan (If I'm taking this totally wrong, make sure I know) _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
