New optimized string routines for Intel and alignment of stack.

[Zack Weinberg]

On Tue, Jun 7, 2016 at 8:23 AM, Florian Weimer <fweimer@redhat.com> wrote:
> On 06/07/2016 01:51 PM, Adhemerval Zanella wrote:
>
>> Also, is there any performance issue with current unaligned version
>
> I think there is a performance penalty from not using vectorized copies for
> small structs.  Even unaligned SSE loads/stores would be a win for the
> example I posted, I assume.

Is the gain from using vectorized copies large enough that manually
aligning the stack in functions that want to use those instructions
would be worth it?

zw