commit 71ecb5d7d905d1f1771b6c5e130e873dcf458b73
author Yunqing Wang <yunqingwang@google.com> Wed Oct 27 08:45:24 2010 -0400
committer Yunqing Wang <yunqingwang@google.com> Wed Oct 27 13:36:31 2010 -0400
tree 26ef42506e0eaaf03022f4f7fbe15d617beae883
parent a0ae3682aa67f882006c604196f7ee83eff88d84

Full search SAD function optimization in SSE4.1

Use mpsadbw, and calculate 8 sad at once. Function list:
vp8_sad16x16x8_sse4
vp8_sad16x8x8_sse4
vp8_sad8x16x8_sse4
vp8_sad8x8x8_sse4
vp8_sad4x4x8_sse4

(test clip: tulip)
For best quality mode, this gave encoder a 5% performance boost.
For good quality mode with speed=1, this gave encoder a 3%
performance boost.

Change-Id: I083b5a39d39144f88dcbccbef95da6498e490134

configure

diff --git a/configure b/configure
index 39ef83f..11e086e 100755
--- a/configure
+++ b/configure
@@ -199,6 +199,7 @@
     sse2
     sse3
     ssse3
+    sse4_1
 
     altivec
 "