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

[Richard Henderson]

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


r~