Solaris 2.4, 486 50mhz, gcc 2.6.3options    des ecb/s16 r2 i     43552.51 100.0%16 r1 i     43487.45  99.9%16  c p     43003.23  98.7%16 r2 p     42339.00  97.2%16  c i     41900.91  96.2%16 r1 p     41360.64  95.0% 4  c i     38728.48  88.9% 4  c p     38225.63  87.8% 4 r1 i     38085.79  87.4% 4 r2 i     37825.64  86.9% 4 r2 p     34611.00  79.5% 4 r1 p     31802.00  73.0%-DDES_UNROLL -DDES_RISC2