[FFmpeg-devel] [PATCH 1/2] x86/aacpsdsp: precompute constant factors

[James Almer]

Inspired by the optimization done to the C version by Rémi Denis-Courmont.

Signed-off-by: James Almer <jamrial at gmail.com>
---
 libavcodec/x86/aacpsdsp.asm | 42 +++++++++++++++++++++----------------
 1 file changed, 24 insertions(+), 18 deletions(-)

diff --git a/libavcodec/x86/aacpsdsp.asm b/libavcodec/x86/aacpsdsp.asm
index 4acd087c85..543d33e68d 100644
--- a/libavcodec/x86/aacpsdsp.asm
+++ b/libavcodec/x86/aacpsdsp.asm
@@ -400,29 +400,32 @@ HYBRID_SYNTHESIS_DEINT
 ;                                 const float (*filter)[8][2],
 ;                                 ptrdiff_t stride, int n);
 ;*******************************************************************
-%macro PS_HYBRID_ANALYSIS_LOOP 3
-    movu     %1, [inq+mmsize*%3]
-    movu     m1, [inq+mmsize*(5-%3)+8]
-%if cpuflag(sse3)
-    pshufd   %2, %1, q2301
-    pshufd   m4, m1, q0123
-    pshufd   m1, m1, q1032
-    pshufd   m2, [filterq+nq+mmsize*%3], q2301
-    addsubps %2, m4
-    addsubps %1, m1
-%else
-    mova     m2, [filterq+nq+mmsize*%3]
-    mova     %2, %1
+%macro PS_HYBRID_ANALYSIS_IN 1
+    movu     m0, [inq+mmsize*%1]
+    movu     m1, [inq+mmsize*(5-%1)+8]
+    mova     m3, m0
     mova     m4, m1
-    shufps   %2, %2, q2301
+    shufps   m3, m3, q2301
     shufps   m4, m4, q0123
     shufps   m1, m1, q1032
-    shufps   m2, m2, q2301
+%if cpuflag(sse3)
+    addsubps m3, m4
+    addsubps m0, m1
+%else
     xorps    m4, m7
     xorps    m1, m7
-    subps    %2, m4
-    subps    %1, m1
+    subps    m3, m4
+    subps    m0, m1
 %endif
+    mova  [rsp+mmsize*%1*2], m3
+    mova  [rsp+mmsize+mmsize*%1*2], m0
+%endmacro
+
+%macro PS_HYBRID_ANALYSIS_LOOP 3
+    mova     m2, [filterq+nq+mmsize*%3]
+    shufps   m2, m2, q2301
+    mova     %2, [rsp+mmsize*%3*2]
+    mova     %1, [rsp+mmsize+mmsize*%3*2]
     mulps    %2, m2
     mulps    %1, m2
 %if %3
@@ -432,7 +435,7 @@ HYBRID_SYNTHESIS_DEINT
 %endmacro
 
 %macro PS_HYBRID_ANALYSIS 0
-cglobal ps_hybrid_analysis, 5, 5, 8, out, in, filter, stride, n
+cglobal ps_hybrid_analysis, 5, 5, 8, 24 * 4, out, in, filter, stride, n
 %if cpuflag(sse3)
 %define MOVH movsd
 %else
@@ -443,6 +446,9 @@ cglobal ps_hybrid_analysis, 5, 5, 8, out, in, filter, stride, n
     add filterq, nq
     neg nq
     mova m7, [ps_p1m1p1m1]
+    PS_HYBRID_ANALYSIS_IN 0
+    PS_HYBRID_ANALYSIS_IN 1
+    PS_HYBRID_ANALYSIS_IN 2
 
 align 16
 .loop:
-- 
2.37.3