From: Henrik Gramner <hen...@gramner.com>
There's no point in emitting a rep prefix before ret on modern CPUs.
---
libavutil/x86/x86inc.asm | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavutil/x86/x86inc.asm b/libavutil/x86/x86inc.asm
index f2a6a3f1db..44069741cc 100644
--- a/libavutil/x86/x86inc.asm
+++ b/libavutil/x86/x86inc.asm
@@ -636,7 +636,7 @@ DECLARE_ARG 7, 8, 9, 10, 11, 12, 13, 14
; We can automatically detect "follows a branch", but not a branch target.
; (SSSE3 is a sufficient condition to know that your cpu doesn't have this
problem.)
%macro REP_RET 0
- %if has_epilogue
+ %if has_epilogue || cpuflag(ssse3)
RET
%else
rep ret
--
2.13.0
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
