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Re: is -O2 breaking sse2 alignment?
Brian Budge wrote:
> Hi -
>
> I think this might be a little simpler:
>
> void test_add_long1(long * result, long * a, long * b, long size) {
> __m128i *A = (__m128i*)a;
> __m128i *B = (__m128i*)b;
> __m128i *end = A + size/2;
> __m128i *R = (__m128i*)result;
>
> for(; A < end; ++A, ++B, ++R) {
> *R = _mm_add_epi64(*A, *B);
> }
> }
This has the same aliasing problems.
Andrew.