Rep:Re: [f-cpu] new langage ?

["Nicolas Boulay" <nicolas.boulay@ifrance.com>]

New language of a higher level is really needed to really have a code
portability without the problem of performance.

BUT it's really hard to devellop a all new language ( or look at "D" ).

I personnaly like the way systemC work. It's only a "big" librairy for
C++. We just have to design a librairy that work well with SIMD. 

In c++, one librairy do such thing : STL. If we port STL (in asm) for
the fpu we could accelerate all soon written programme and future one. 

I think it's the better cost/benefit ratio.

nicO

-----Message d'origine-----
De: djrom <pash.cracken@free.fr>
A: f-cpu@seul.org
Date: 19/04/02
Objet: Re: [f-cpu] Winograd DCT on my seul.org account

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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