What loop optimizations could increase the code size significantly?

[Gan]

Software pipeline (a.k.a, sms) generates prologue and epilogue code.
In addition, loop versioning duplicates loop body, which would also
increase code size. But I guess you don't want to turn on SWP, right?

Gan


On Fri, Dec 10, 2010 at 1:40 PM, Fang, Changpeng <Changpeng.Fang@amd.com> wrote:
> Hi,
>
>  I am kooking ways to reduce the code size. What loop optimizations could increase the code size significantly?
> The optimization I know are: unswitch, vectorization, prefetch and unrolling.
> We should not perform these optimizations if the loop just roll a few iterations.
>
> In addition, what loop optimizations could generate pre- and/or post loops?
> For example, vectorization, unrolling,
>
> Thanks,
>
> Changpeng
>



-- 
Best Regards

Gan