SIMD benchmark

[Walter Bright]

On 1/16/2012 8:59 AM, Manu wrote:
> (also the float array is
> unaligned).

Currently, it is 4 byte aligned. But the compiler could align freestanding 
static arrays on 16 bytes without breaking anything. It just cannot align:

    struct S
    {
         int a;
         float[4] b;
    }

b on a 16 byte boundary, as that would break the ABI. Even worse,

    struct S
    {
        int a;
        char[16] s;
    }

can't be aligned on 16 bytes as that is a common "small string optimization".