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

[Harald Kipp]

>>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

Peter,

sure there is a way, simply code these in an inline asm. 
[Joke alert] :-)

Seriously, the problem at this point is, that register
usage isn't predictable. Only the compiler knows, which
values are hold by which registers. There's no way I
kow of, to pass this information to the inline asm 
statements.

Harald