[FFmpeg-cvslog] avcodec/x86: remove 3 sub in pred4x4_tm_vp8_8.

[Clément Bœsch]

ffmpeg | branch: master | Clément Bœsch <u at pkh.me> | Sun Nov 17 23:00:23 2013 +0100| [e0434cfcfcbadf754627512878ad91eedb7c85cc] | committer: Clément Bœsch

avcodec/x86: remove 3 sub in pred4x4_tm_vp8_8.

before:
  411 decicycles in ff_pred4x4_tm_vp8_8_ssse3, 8388289 runs, 319 skips

after:
  389 decicycles in ff_pred4x4_tm_vp8_8_ssse3, 8388308 runs, 300 skips

Tested on i7 920.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=e0434cfcfcbadf754627512878ad91eedb7c85cc
---

 libavcodec/x86/h264_intrapred.asm |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/libavcodec/x86/h264_intrapred.asm b/libavcodec/x86/h264_intrapred.asm
index 5c0dff4..3064ec5 100644
--- a/libavcodec/x86/h264_intrapred.asm
+++ b/libavcodec/x86/h264_intrapred.asm
@@ -2486,10 +2486,7 @@ cglobal pred4x4_tm_vp8_8, 3,3
     pshufb     mm3, mm6
     pshufb     mm4, mm6
     pshufb     mm5, mm6
-    psubw      mm2, mm7
-    psubw      mm3, mm7
-    psubw      mm4, mm7
-    psubw      mm5, mm7
+    psubw      mm0, mm7
     paddw      mm2, mm0
     paddw      mm3, mm0
     paddw      mm4, mm0