On Oct 3, 2005, at 6:41 PM, Evan Cheng wrote: > But according to the manual -msse3 does not turn on generation of SSE3 > instructions: The manual is semi-confusing I had forgot about that. There is a bug about the issue recorded as PR 23809: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23809 Thanks, Andrew Pinski