Re: [RFC][PATCH 02/31] locking,alpha: Implement atomic{,64}_fetch_{add,sub,and,andnot,or,xor}()

[Peter Zijlstra]

On Fri, Apr 22, 2016 at 09:57:04AM -0700, Richard Henderson wrote:
> On 04/22/2016 02:04 AM, Peter Zijlstra wrote:
> > +	"1:	ldl_l %0,%1\n"						\
> > +	"       mov %0,%2\n"						\
> > +	"	" #asm_op " %0,%3,%0\n"					\
> > +	"	stl_c %0,%1\n"						\
> 
> No need for the extra mov.
> 
> 	ldl_l %2,%1
> 	asm_op %2,%3,%0
> 	stl_c %0,%1

Indeed, I got my head stuck in two operand (x86) asm. This is the second
such 'mistake', I'll go have a look at the rest too.

Thanks!