tree 3b2697199feaebf3b76849497674ff0101f355ce
parent 4c7c21d2492dd5d3a28a0af79319fa2b2261e211
author Peng Bin <binpengsmail@gmail.com> 1553778636 +0800
committer Bin Peng <binpengsmail@gmail.com> 1554256051 +0000

Fix lowbd inv_txfm's mismatch between C and SIMD

BUG=aomedia:2350

* avx2 av1_{highbd,}_inv_txfm_add
When the intput value of round_shift_16bit_w16_avx2 is too large,
such as 32767, this avx2 function produce different result with
c version round_shift.

* lowbd_inv_txfm2d_add_{4x16,16x4}_ssse3
This function missmatch with C version when the values in
dqcoeff is too large, which maybe not prouduced by forward
transform in AV1 encoder.

* Update unitest AV1LbdInvTxfm2d.gt_int16 to replay this
issue.

Change-Id: I7c249de60657f26c205090b5d00b92a902c04bb5