+ unsigned use_pad_return:1;
+ /** use the bt instruction */
+ unsigned use_bt:1;
+ /** use fisttp instruction (requires SSE3) */
+ unsigned use_fisttp:1;
+ /** use SSE prefetch instructions */
+ unsigned use_sse_prefetch:1;
+ /** use 3DNow! prefetch instructions */
+ unsigned use_3dnow_prefetch:1;
+ /** use SSE4.2 or SSE4a popcnt instruction */
+ unsigned use_popcnt:1;
+ /** use i486 instructions */
+ unsigned use_i486:1;