Change #252791

Comments

avcodec/x86/lossless_videodsp: Don't store in eight byte chunks
Use movu (movdqu) instead of movq+movhps.

Old benchmarks:
add_left_pred_int16_c:                                2265.5 ( 1.00x)
add_left_pred_int16_ssse3:                             595.4 ( 3.81x)
add_left_pred_rnd_acc_c:                              1255.0 ( 1.00x)
add_left_pred_rnd_acc_ssse3:                           326.2 ( 3.85x)
add_left_pred_rnd_acc_avx2:                            279.0 ( 4.50x)
add_left_pred_zero_c:                                 1249.5 ( 1.00x)
add_left_pred_zero_ssse3:                              326.1 ( 3.83x)
add_left_pred_zero_avx2:                               277.0 ( 4.51x)

New benchmarks:
add_left_pred_int16_c:                                2266.9 ( 1.00x)
add_left_pred_int16_ssse3:                             509.9 ( 4.45x)
add_left_pred_rnd_acc_c:                              1251.4 ( 1.00x)
add_left_pred_rnd_acc_ssse3:                           282.6 ( 4.43x)
add_left_pred_rnd_acc_avx2:                            208.9 ( 5.99x)
add_left_pred_zero_c:                                 1253.7 ( 1.00x)
add_left_pred_zero_ssse3:                              280.0 ( 4.48x)
add_left_pred_zero_avx2:                               206.8 ( 6.06x)

The checkasm test has been modified to use an unaligned destination
for this test.

Reviewed-by: Lynne <dev@lynne.ee>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

Changed files

• libavcodec/x86/lossless_videodsp.asm