Re: [avr-gcc-list] Efficient htons/swap16 or htonl/swap32 inplace?

[Jesper Hansen]

> At 8:29 +0800 17/8/01, Peter N Lewis wrote:
> 
> >Is there any way to convince the compiler to generate:
> >
> > ldd r20,Y+1
> > ldd r21,Y+2
> > std Y+1,r21
> > std Y+2,r22
> 
> No takers for how to do this?  I expected there would be lots of 
> efficiency nuts on this list! ;-)


Perhaps the effieciency nuts are writing their code in assembler ;-)

/Jesper
http:/www.yampp.com

 
> Thanks for any ideas.
>     Peter.
> PS: Important safety tip - don't allocate 4 32-byte structs, 
> including one on the stack when running on a 4433 with 128 bytes of 
> RAM!
> -- 
> <http://www.interarchy.com/>  <ftp://ftp.interarchy.com/interarchy.hqx>
> 
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