Question

I would like to use instruction _mm_prefetch. MSDN specifies that it is in header mmintrin.h, but there is not. I use Visual Studio 2012.

Answer 1

Looks like a bug in their documentation. I couldn’t find it in <mmintrin.h> either, but it appears to be in <xmmintrin.h>.

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This compiles in VS2010:

#include <xmmintrin.h>

int main()
{

    _mm_prefetch(0,0);

    return 0;
}