rc4: extend av_rc4_init() doxy

[ffmpeg] / libavutil / cpu.h

diff --git a/libavutil/cpu.h b/libavutil/cpu.h
index d7fdf26f87b071fb70f105818986087ba9448fe9..67a1abc34e9de1da2c3105308734c2578962c8ad 100644 (file)
--- a/libavutil/cpu.h
+++ b/libavutil/cpu.h
@@ -45,6 +45,7 @@
 #define AV_CPU_FLAG_SSE4         0x0100 ///< Penryn SSE4.1 functions
 #define AV_CPU_FLAG_SSE42        0x0200 ///< Nehalem SSE4.2 functions
 #define AV_CPU_FLAG_AVX          0x4000 ///< AVX functions: requires OS support even if YMM registers aren't used
+#define AV_CPU_FLAG_AVXSLOW   0x8000000 ///< AVX supported, but slow when using YMM registers (e.g. Bulldozer)
 #define AV_CPU_FLAG_XOP          0x0400 ///< Bulldozer XOP functions
 #define AV_CPU_FLAG_FMA4         0x0800 ///< Bulldozer FMA4 functions
 #define AV_CPU_FLAG_CMOV         0x1000 ///< i686 cmov