------- Comment #9 from ubizjak at gmail dot com 2009-05-10 17:51 ------- (In reply to comment #8) > > Can you send the output of "gcc -march=native -v"? It looks that the driver > > doesn't detect correctly the type of your CPU.
Uh, I mean "gcc -march=native -### hello.c" It should return something like: ... COLLECT_GCC_OPTIONS= "/usr/local/libexec/gcc/x86_64-unknown-linux-gnu/4.4.0/cc1" "-quiet" "hello.c" "-march=core2" "-mcx16" "-msahf" "--param" "l1-cache-size=32" "--param" "l1-cache-line-size=64" "--param" "l2-cache-size=4096" "-mtune=core2" "-quiet" "-dumpbase" "hello.c" "-auxbase" "hello" "-o" "/tmp/cc63O3Mc.s" ... -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37179