From: James Almer <jamrial@gmail.com>
Date: Tue, 16 Sep 2025 01:18:52 +0000 (-0300)
Subject: avcodec/x86/pngdsp: add missing emms at the end of add_png_paeth_prediction
X-Git-Url: http://git.ffmpeg.org/gitweb/ffmpeg.git/commitdiff_plain/refs/heads/release/4.3

avcodec/x86/pngdsp: add missing emms at the end of add_png_paeth_prediction

Fixes unpredictable behavior with floats.

Signed-off-by: James Almer <jamrial@gmail.com>
(cherry picked from commit 57a29f2e7dd2374a1df27316c6cf7c0225e86758)
---

diff --git a/libavcodec/x86/pngdsp.asm b/libavcodec/x86/pngdsp.asm
index 50e4255dec..726e6bc712 100644
--- a/libavcodec/x86/pngdsp.asm
+++ b/libavcodec/x86/pngdsp.asm
@@ -163,6 +163,7 @@ cglobal add_png_paeth_prediction, 5, 7, %1, dst, src, top, w, bpp, end, cntr
     dec              cntrq
     jge .bpp_loop
     POP               dstq
+    emms
     RET
 %endmacro