From 87aa12206e7c8d30ec298df9c1a2fed8b8605b85 Mon Sep 17 00:00:00 2001
From: Moinak Ghosh <moinakg@gmail.com>
Date: Sun, 6 Jan 2013 19:28:40 +0530
Subject: [PATCH] Use SSE3 lddqu in the matchfinder if SSE3 is enabled.

---
 lzma/LzFind.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/lzma/LzFind.c b/lzma/LzFind.c
index 1bcd5c1..160fed0 100644
--- a/lzma/LzFind.c
+++ b/lzma/LzFind.c
@@ -3,8 +3,12 @@
 
 #include <string.h>
 #ifdef __USE_SSE_INTRIN__
+#ifdef __SSE3__
+#include <pmmintrin.h>
+#else
 #include <emmintrin.h>
 #endif
+#endif
 
 #include "LzFind.h"
 #include "LzHash.h"
@@ -409,8 +413,13 @@ UInt32 * GetMatchesSpec1(UInt32 lenLimit, UInt32 curMatch, UInt32 pos, const Byt
          int mask;
          UInt32 byt;
          while (lenLimit - len > 16) {
+#ifdef __SSE3__
+           __m128i span1 = _mm_lddqu_si128((__m128i *)(pb+len));
+           __m128i span2 = _mm_lddqu_si128((__m128i *)(cur+len));
+#else
            __m128i span1 = _mm_loadu_si128((__m128i *)(pb+len));
            __m128i span2 = _mm_loadu_si128((__m128i *)(cur+len));
+#endif
            mask = _mm_movemask_epi8(_mm_cmpeq_epi8(span1, span2)) ^ 0xffff;
            if (mask) {
              byt = __builtin_ctz(mask);
@@ -504,8 +513,13 @@ static void SkipMatchesSpec(UInt32 lenLimit, UInt32 curMatch, UInt32 pos, const
         int mask;
         UInt32 byt;
         while (lenLimit - len > 16) {
+#ifdef __SSE3__
+          __m128i span1 = _mm_lddqu_si128((__m128i *)(pb+len));
+          __m128i span2 = _mm_lddqu_si128((__m128i *)(cur+len));
+#else
           __m128i span1 = _mm_loadu_si128((__m128i *)(pb+len));
           __m128i span2 = _mm_loadu_si128((__m128i *)(cur+len));
+#endif
           mask = _mm_movemask_epi8(_mm_cmpeq_epi8(span1, span2)) ^ 0xffff;
           if (mask) {
             byt = __builtin_ctz(mask);