------- Comment #5 from howarth at nitro dot med dot uc dot edu 2010-05-09 23:12 ------- Okay, my mistake. It appears that the default builds for both i386-apple-darwin* and x86_64-apple-darwin* are both leaving -mtune set at generic. However it would be a nice aim for gcc 4.6.0 to have the processor specific costs outperform the generic tuning when invoked.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34501
