This is from my SS20HYPER config(8) file:

makeoptions     CPUFLAGS="-mcpu=hypersparc -mtune=hypersparc"

Since this does not fiddle COPTS or CFLAGS, you don't lose the 
default -O optimization settings.

GCC 3.x has differing optimizations for supersparc and hypersparc; 
the definition files were the same for GCC 2.95.x (i.e. no 
difference).

The GCC man page always lags the code.

	Erik <fair@clock.org>