[PATCH 3/4] s390: Reorganize assembly

[Richard Henderson]

On 12/22/2014 04:25 AM, Dominik Vogt wrote:
> Or rather the attached patch stat replaces
> 
>   stm %r2,%r3,0(%r12)
>   nop
> 
> with
> 
>   st %r2,0(%r12)
>   st %r3,4(%r12)

Is that really an improvement?

(1) You now need a branch for the (presumed) normal "int" case.
(2) Is stm really that much faster than two st?  I would have
    thought the reverse, actually.


r~