From 502ab21af0ca68f76d6112722c46d2f35c004053 Mon Sep 17 00:00:00 2001
From: Loren Merritt <lorenm@u.washington.edu>
Date: Tue, 18 Jun 2013 21:30:42 +0000
Subject: x86: lpc: simd av_update_lls

4x-6x faster on sandybridge

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
---
 libavcodec/lpc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'libavcodec/lpc.c')

diff --git a/libavcodec/lpc.c b/libavcodec/lpc.c
index f60976be94..144bbede44 100644
--- a/libavcodec/lpc.c
+++ b/libavcodec/lpc.c
@@ -200,7 +200,9 @@ int ff_lpc_calc_coefs(LPCContext *s,
             ref[i] = fabs(lpc[i][i]);
     } else if (lpc_type == FF_LPC_TYPE_CHOLESKY) {
         LLSModel m[2];
-        double var[MAX_LPC_ORDER+1], av_uninit(weight);
+        LOCAL_ALIGNED(32, double, var, [FFALIGN(MAX_LPC_ORDER+1,4)]);
+        double av_uninit(weight);
+        memset(var, 0, FFALIGN(MAX_LPC_ORDER+1,4)*sizeof(*var));
 
         for(pass=0; pass<lpc_passes; pass++){
             avpriv_init_lls(&m[pass&1], max_order);
-- 
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