I believe sparc64 automatically sets -mcpu=v9. For other boxes
   	you might want to look at the devel/cpuflags package. It takes
   	a look at sysctl hw.model and tries to pick a good set of
   	optimisation flags. If you find any CPU values it doesn't
   	recognise, please let me know :)
   
   	-msupersparc gets you the int multiply and divide which should
   	be a win :)


it seems to me that the default sparc64 flags should include -multrasparc
to properly enable scheduling for ultrasparc.  "sparc" needs to run on
both v7 and v8 hardware (no v6 that i'm aware of??) and the int mul/div
instructions take a Long Time to emulate on the v7 machines, so you don't
want to default to -mv8 or -msupersparc.


sparc64 doesn't set -mcpu=v9.  the 64bit compiler defaults to 64bit,
but that's separate (-m32 vs -m64).


.mrg.