Re: [f-cpu] Winograd DCT on my seul.org account

[djrom <pash.cracken@free.fr>]

this is a very interesting paper. but what haven't you written the code in assembler ? the C code looks like assembler in any way, so ... :-)

it cause the problem of gcc to (re)raise. optimisations for FC0 are very different from usual optimisations, even for RISC processors. I don't know the real structure of gcc, but I guess it'll be very difficult to put FC0 tricks without breaking the portability, no ? I even wonder if rewriting a new compiler won't be much easier than trying to add such things in gcc, if we want the compiler to be good. we don't want to see the F-Cpu ends like the PIV, used at less than 30%, right ? 
moreover, we should perhaps think about another langage to be used on modern processors. C is very limited in his expressivity, so the operations like SIMD or "real" optimisations put a ton of work on the compiler's shoulders. it shouldn't just try to optimise, but it must even try to *understand* what the programmers meant. is there a langage really usable for modern RISC processors ? maybe we should try to return to lisp or ML, or something like that, no ? that's could also be a way to promote new langages: I don't want 2030's processors to be always coded in C ! :-) 

if *we* don't promote new langages, we won't be able to count on Intel to do it ! :-)

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