Brian Budge <brian.budge@xxxxxxxxx> writes: > simd4f is a wrapper on __m128, and "m_leftRep" is an array of > uint32_t. I realize that I could just create a simd4f array for "c", > perform the first loop, and then put a union in the second loop. This > would require at least one extra write per uint32_t though. Is there > any way of specifying that "c" aliases "m_leftRep"? Or am I stuck > with the union? I don't know if this answers your question, because I don't know precisely what you mean by a wrapper, but note that __m128 is magical: a pointer to __m128 is permitted to alias other pointers. This is essentially required by the Intel docs. It is implemented by giving __m128 the "may_alias" attribute, q.v. Ian
