[FFmpeg-cvslog] x86inc: Make REP_RET identical to RET in SSSE3+ functions

[Henrik Gramner]

ffmpeg | branch: master | Henrik Gramner <henrik at gramner.com> | Thu Apr 20 19:16:51 2017 +0200| [88dcdfad0964a954b6f185936c023dfd1c5d5e99] | committer: James Darnley

x86inc: Make REP_RET identical to RET in SSSE3+ functions

There's no point in emitting a rep prefix before ret on modern CPUs.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=88dcdfad0964a954b6f185936c023dfd1c5d5e99
---

 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 c28bc8dcae..bb1b1be191 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