------- Comment #10 from hjl at lucon dot org 2007-10-07 15:19 ------- (In reply to comment #9) > Gcc 4.3 revision 128885 is much slower than gcc 4.1 redhat revision 128771 > with -O2 -ffast-math on 64bit Linux/Core 2 Duo: > > 437.leslie3d -26.2% >
The main difference between gcc 4.1 redhat and gcc 4.1 is the -mtune=generic change. I believe gcc 4.3 will also be much slower than gcc 4.1 on Opteron. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32921
