Aligning data in memory

[Peter Alexander]

I could be wrong, but I think so.

As I understand, align(N) only aligns it *within the structure*.

If you are at 0 offset, you are aligned on all N already, so I don't see 
why it would add padding before the first member of a struct.


On 21/09/11 11:22 AM, Rory McGuire wrote:
> Would that even be true in the case where you specify a alignment (
> keeping in mind that the alignment is for that specific variable)?
>
>
>
> On Tue, Sep 20, 2011 at 7:25 PM, Peter Alexander
> <peter.alexander.au at gmail.com <mailto:peter.alexander.au at gmail.com>> wrote:
>
>     On 19/09/11 9:17 AM, Rory McGuire wrote:
>
>         surely you would have to use
>           movaps XMM0, v.v;
>
>           because the alignment would only happen inside the struct?
>
>
>         On Sat, Sep 17, 2011 at 8:11 PM, Adam D. Ruppe
>         <destructionator at gmail.com <mailto:destructionator at gmail.com>
>         <mailto:destructionator at gmail.__com
>         <mailto:destructionator at gmail.com>>> wrote:
>
>             Perhaps:
>
>             void foo() {
>                     struct V { align(16) float[4] v = [1.0f, 2.0f, 3.0f,
>         4.0f]; }
>                     V v;
>                     asm {
>                             movaps XMM0, v;
>                     }
>             }
>
>
>             It compiles, but I'm not sure if it's actually correct.
>
>
>
>     v has offset 0 in the struct, so &v.v == &v, which is all the inline
>     asm cares about.
>
>