Inlined functions like AV_ZERO* and AV_COPY* may use mmx instructions regardless of runtime cpuflags.
Signed-off-by: James Almer <jamr...@gmail.com> --- On targets where __MMX__ is not defined (like default x86_32 builds) the runtime check is a must, and neither of the above functions will use mmx instructions anyway. libavutil/x86/emms.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavutil/x86/emms.h b/libavutil/x86/emms.h index a529b6b..0deeb8c 100644 --- a/libavutil/x86/emms.h +++ b/libavutil/x86/emms.h @@ -34,7 +34,9 @@ void avpriv_emms_yasm(void); */ static av_always_inline void emms_c(void) { +#if !defined(__MMX__) if(av_get_cpu_flags() & AV_CPU_FLAG_MMX) +#endif __asm__ volatile ("emms" ::: "memory"); } #elif HAVE_MMX && HAVE_MM_EMPTY -- 2.7.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel