------- Comment #3 from hjl dot tools at gmail dot com 2008-04-21 13:30 ------- pmmintrin.h is for SSE3. I don't see anything wrong here. If someone wants to support SSE3 macros on some processors with SSE2, a new header file may be used.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21408