Ronald S. Bultje 92436e8ad9 vp9: implement top/left half (4x4) sub-8x8-IDCT.
For that specific case (eob>3&&eob<=12), runtime of idct8x8 goes from
668 to 477 cycles. For all idct8x8, runtime goes from 521 to 490 cycles.
2013-12-07 12:39:36 -05:00
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2013-12-07 12:39:35 -05:00