Originally committed as revision 1691 to svn://svn.ffmpeg.org/ffmpeg/trunk
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* MMI optimization by Leon van Stuivenberg <leonvs@iae.nl>
+ * clear_blocks_mmi() by BroadQ
*/
#include "../dsputil.h"
static void clear_blocks_mmi(DCTELEM * blocks)
{
- int i;
- for (i = 0; i < 6; i++) {
asm volatile(
- "sq $0, 0(%0) \n\t"
- "sq $0, 16(%0) \n\t"
- "sq $0, 32(%0) \n\t"
- "sq $0, 48(%0) \n\t"
- "sq $0, 64(%0) \n\t"
- "sq $0, 80(%0) \n\t"
- "sq $0, 96(%0) \n\t"
- "sq $0, 112(%0) \n\t" :: "r" (blocks) : "memory" );
- blocks += 64;
- }
+ ".set noreorder \n"
+ "addiu $9, %0, 768 \n"
+ "nop \n"
+ "1: \n"
+ "sq $0, 0(%0) \n"
+ "move $8, %0 \n"
+ "addi %0, %0, 64 \n"
+ "sq $0, 16($8) \n"
+ "slt $10, %0, $9 \n"
+ "sq $0, 32($8) \n"
+ "bnez $10, 1b \n"
+ "sq $0, 48($8) \n"
+ ".set reorder \n"
+ : "+r" (blocks) :: "$8", "$9", "memory" );
}