On Friday 09 June 2006 06:00, Andrew Morton wrote:
> On Thu, 8 Jun 2006 16:02:44 -0700 (PDT)
> Christoph Lameter <[email protected]> wrote:
>
> > Per zone counter infrastructure
> >
>
> Is the use of 8-bit accumulators more efficient than using 32-bit ones?
> Obviously it's better from a cache POV, given that we have a pretty large
> array of them. But is there a downside on some architectures in not using
> the natural wordsize?
Maybe on very old alphas which didn't have 8 bit stores. They need a RMW cycle.
Other than that i wouldn't expect any problems. RISCs will just do the usual
32bit add in registers, but do a 8bit load/store.
-Andi
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