Andi Kleen wrote:
> Glauber Costa <gcosta@redhat.com> writes:
> 
>> Instead of clobbering r8, clobber rbx, which is the i386 way.
> 
> Note rbx is callee saved on 64bit, so using that one means
> the surrounding function always has to save explicitely.
> Not the case with r8.
> 
> There's a reason it is the way it is.
> 
> -Andi

Andi, how about this one ?