Use add instead of lshift in mmxext vp8 idct

Originally committed as revision 23891 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago · 82a8d0f114
parent 565344e7e4
commit 82a8d0f114
1 changed files with 2 additions and 2 deletions
--- a/libavcodec/x86/vp8dsp.asm
+++ b/libavcodec/x86/vp8dsp.asm
@ -939,8 +939,8 @@ cglobal vp8_idct_dc_add_sse4, 3, 3, 6
    pmulhw    %4, m6 ;20091(2)
    paddw     %3, %1
    paddw     %4, %2
-    psllw     %1, 1
-    psllw     %2, 1
+    paddw     %1, %1
+    paddw     %2, %2
    pmulhw    %1, m7 ;35468(1)
    pmulhw    %2, m7 ;35468(2)
    psubw     %1, %4