On Wed, 2010-06-30 at 11:09 +1000, Beau Henderson wrote: > On 06/30/10 08:07, Paul Hartman wrote: [...] > > You can see which options -march=native would use by running this command: > > > > gcc -Q --help=target -march=native > > > > (thanks to Daniel Iliev for the tip) > > > > Perhaps I'm missing something but running the above gives me the impression > that -march=native > actually only configures the bare minimal install. I'm not seeing -mmmx or > -msse3 enabled on my > k8-sse3 for instance ( amongst much else ). >
-march sometimes implies a some things. E.g., anything above a pentium2 implies MMX. My hunch is that k8-sse3 implies... sse3.
