HPUX 10 - 9000/887 - cc -D_HPUX_SOURCE -Aa +ESlit +O2 -Wl,-a,archive

options    des ecb/s
16  c i    149448.90 100.0%
 4  c i    145861.79  97.6%
16 r2 i    141710.96  94.8%
16 r1 i    139455.33  93.3%
 4 r2 i    138800.00  92.9%
 4 r1 i    136692.65  91.5%
16 r2 p    110228.17  73.8%
16 r1 p    109397.07  73.2%
16  c p    109209.89  73.1%
 4  c p    108014.71  72.3%
 4 r2 p    107873.88  72.2%
 4 r1 p    107685.83  72.1%
-DDES_UNROLL