It can be used to call emms_c() only when needed.
Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@outlook.com>
---
libavutil/x86/intreadwrite.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libavutil/x86/intreadwrite.h b/libavutil/x86/intreadwrite.h
index 4061d19231..40f375b013 100644
--- a/libavutil/x86/intreadwrite.h
+++ b/libavutil/x86/intreadwrite.h
@@ -29,6 +29,8 @@
#if !HAVE_FAST_64BIT && defined(__MMX__)
+#define FF_COPY_SWAP_ZERO_USES_MMX
+
#define AV_COPY64 AV_COPY64
static av_always_inline void AV_COPY64(void *d, const void *s)
{
--
2.34.1
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