tree 7ae7291edbda6b35c530543021a14fd6c99b7e5f
parent 7fa09e7bfdfc4d805189bab8f0246ebddae73dee
author Luc Trudeau <luc@trud.ca> 1522852681 -0400
committer Luc Trudeau <luc@trud.ca> 1523369521 +0000

[CFL] VSX version of Subtract Average

Includes unit tests for conformance and speed.

VSX/SubAvgSpeedTest (POWER8 Model 2.1)
8x8: C time = 1629 us, SIMD time = 693 us (~2.4x)
16x16: C time = 4231 us, SIMD time = 1883 us (~2.2x)
32x32: C time = 21329 us, SIMD time = 6916 us (~3.1x)

Change-Id: Idd6ba6dbfc9941f2d0acbb0a0010b3a45fa63e46