[FFmpeg-cvslog] x86/vp9lpf: remove braindead double pxor.

Clément Bœsch git at videolan.org
Wed Feb 5 07:25:51 CET 2014


ffmpeg | branch: master | Clément Bœsch <u at pkh.me> | Wed Feb  5 07:21:11 2014 +0100| [97dde561dec0d5d8ba5c3da2264298191d500ead] | committer: Clément Bœsch

x86/vp9lpf: remove braindead double pxor.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=97dde561dec0d5d8ba5c3da2264298191d500ead
---

 libavcodec/x86/vp9lpf.asm |   10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/libavcodec/x86/vp9lpf.asm b/libavcodec/x86/vp9lpf.asm
index 8702f59..2305832 100644
--- a/libavcodec/x86/vp9lpf.asm
+++ b/libavcodec/x86/vp9lpf.asm
@@ -59,8 +59,10 @@ SECTION .text
 %endmacro
 
 ; %1 = %1<=%2
-%macro CMP_LTE 4 ; src/dst, cmp, tmp, pb_80
+%macro CMP_LTE 3-4 ; src/dst, cmp, tmp, pb_80
+%if %0 == 4
     pxor                %1, %4
+%endif
     pcmpgtb             %3, %2, %1          ; cmp > src?
     pcmpeqb             %1, %2              ; cmp == src? XXX: avoid this with a -1/+1 well placed?
     por                 %1, %3              ; cmp >= src?
@@ -480,15 +482,13 @@ SECTION .text
     pxor                m7, m8
     pxor                m4, m8
     pcmpgtb             m0, m4, m7                      ; abs(p1 - p0) > H (1/2 hev condition)
-    pxor                m4, m8
-    CMP_LTE             m4, m6, m5, m8                  ; abs(p1 - p0) <= 1
+    CMP_LTE             m4, m6, m5                      ; abs(p1 - p0) <= 1
     pand                m2, m4                          ; (flat8in)
     ABSSUB              m4, m13, m12, m1                ; abs(q1 - q0)
     pxor                m4, m8
     pcmpgtb             m5, m4, m7                      ; abs(q1 - q0) > H (2/2 hev condition)
     por                 m0, m5                          ; hev final value
-    pxor                m4, m8
-    CMP_LTE             m4, m6, m5, m8                  ; abs(q1 - q0) <= 1
+    CMP_LTE             m4, m6, m5                      ; abs(q1 - q0) <= 1
     pand                m2, m4                          ; (flat8in)
     ABSSUB_CMP          m1, m14, m12, m6, m4, m5, m8    ; abs(q2 - q0) <= 1
     pand                m2, m1



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