ref: 1f8e8e5bf1eff47c22bcdfac5fe045d1d33ef01b
parent: 3e7025022ef7732aa5aa41533715d7a249fd0ab4
author: Yi Luo <luoyi@google.com>
date: Fri Feb 17 05:59:46 EST 2017
Fix idct8x8 SSSE3 SingleExtremeCoeff unit tests - In SSSE3 optimization, 16-bit addition and subtraction would overflow when input coefficient is 16-bit signed extreme values. - Function-level speed becomes slower (unit ms): idct8x8_64: 284 -> 294 idct8x8_12: 145 -> 158. BUG=webm:1332 Change-Id: I1e4bf9d30a6d4112b8cac5823729565bf145e40b