From 36762ac4b46ccea1e5be11dee336af099ecacf9c Mon Sep 17 00:00:00 2001
From: Matt Sarett <msarett@google.com>
Date: Mon, 20 Jun 2016 08:59:25 -0400
Subject: [PATCH] More efficient absolute value on SSE2

---
 contrib/intel/filter_sse2_intrinsics.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/contrib/intel/filter_sse2_intrinsics.c b/contrib/intel/filter_sse2_intrinsics.c
index aea3f86af..8197c2dd9 100644
--- a/contrib/intel/filter_sse2_intrinsics.c
+++ b/contrib/intel/filter_sse2_intrinsics.c
@@ -208,7 +208,7 @@ static __m128i abs_i16(__m128i x) {
    x = _mm_xor_si128(x, is_negative);
 
    /* +1 to negative lanes, else +0. */
-   x = _mm_add_epi16(x, _mm_srli_epi16(is_negative, 15));
+   x = _mm_sub_epi16(x, is_negative);
    return x;
 #endif
 }