From 791b5954bc8fe7c0077d7eb959ebd17e40d0a7c6 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Thu, 27 Sep 2012 14:06:54 +0000
Subject: [PATCH] dsputil_mmx: fix reading prior of the src array in
sub_hfyu_median_prediction()
This should fix the utvideoenc valgrind failure
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
libavcodec/x86/dsputilenc_mmx.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/libavcodec/x86/dsputilenc_mmx.c b/libavcodec/x86/dsputilenc_mmx.c
index 7dcc73175ce..b7d88f0f36f 100644
--- a/libavcodec/x86/dsputilenc_mmx.c
+++ b/libavcodec/x86/dsputilenc_mmx.c
@@ -849,8 +849,9 @@ static void sub_hfyu_median_prediction_mmx2(uint8_t *dst, const uint8_t *src1, c
uint8_t l, lt;
__asm__ volatile(
+ "movq (%1, %0), %%mm0 \n\t" // LT
+ "psllq $8, %%mm0 \n\t"
"1: \n\t"
- "movq -1(%1, %0), %%mm0 \n\t" // LT
"movq (%1, %0), %%mm1 \n\t" // T
"movq -1(%2, %0), %%mm2 \n\t" // L
"movq (%2, %0), %%mm3 \n\t" // X
@@ -865,6 +866,7 @@ static void sub_hfyu_median_prediction_mmx2(uint8_t *dst, const uint8_t *src1, c
"psubb %%mm4, %%mm3 \n\t" // dst - pred
"movq %%mm3, (%3, %0) \n\t"
"add $8, %0 \n\t"
+ "movq -1(%1, %0), %%mm0 \n\t" // LT
"cmp %4, %0 \n\t"
" jb 1b \n\t"
: "+r" (i)
--
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