------- Comment #2 from jch at pps dot jussieu dot fr 2008-11-05 00:27 ------- Then -mtune=generic is not doing something reasonable.
If I read correctly the docs I have available, going through memory doesn't win on either Core2 or AMD family 10. It does win on the K8, but only in the xmm->integer direction. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38015