[x265] [PATCH] asm: avx2 code for sad[32x24] for 8bpp

[sumalatha at multicorewareinc.com]

# HG changeset patch
# User Sumalatha Polureddy<sumalatha at multicorewareinc.com>
# Date 1426073301 -19800
# Node ID ccf70e5d0142ee558c27968a70d1bc9a2002dbb9
# Parent  0267d015c553b14dd3b4ea1faf9e588cb9b2a825
asm: avx2 code for sad[32x24] for 8bpp

SSE3
sad[32x24]  30.51x   592.99          18093.36

AVX2
sad[32x24]  45.96x   371.90          17091.51

diff -r 0267d015c553 -r ccf70e5d0142 source/common/x86/asm-primitives.cpp
--- a/source/common/x86/asm-primitives.cpp	Wed Mar 11 16:22:34 2015 +0530
+++ b/source/common/x86/asm-primitives.cpp	Wed Mar 11 16:58:21 2015 +0530
@@ -1446,6 +1446,7 @@
         p.pu[LUMA_64x64].sad = x265_pixel_sad_64x64_avx2;
         p.pu[LUMA_32x8].sad = x265_pixel_sad_32x8_avx2;
         p.pu[LUMA_32x16].sad = x265_pixel_sad_32x16_avx2;
+        p.pu[LUMA_32x24].sad = x265_pixel_sad_32x24_avx2;
 
         p.pu[LUMA_8x4].sad_x3 = x265_pixel_sad_x3_8x4_avx2;
         p.pu[LUMA_8x8].sad_x3 = x265_pixel_sad_x3_8x8_avx2;
diff -r 0267d015c553 -r ccf70e5d0142 source/common/x86/sad-a.asm
--- a/source/common/x86/sad-a.asm	Wed Mar 11 16:22:34 2015 +0530
+++ b/source/common/x86/sad-a.asm	Wed Mar 11 16:58:21 2015 +0530
@@ -3978,6 +3978,32 @@
     movd           eax, xm0
     RET
 
+INIT_YMM avx2
+cglobal pixel_sad_32x24, 4,4,5
+    xorps           m0, m0
+%assign x 0
+%rep 12
+    movu           m1, [r0]               ; row 0 of pix0
+    movu           m2, [r2]               ; row 0 of pix1
+    movu           m3, [r0 + r1]          ; row 1 of pix0
+    movu           m4, [r2 + r3]          ; row 1 of pix1
+
+    psadbw         m1, m2
+    psadbw         m3, m4
+    paddd          m0, m1
+    paddd          m0, m3
+%assign x x+1
+  %if x < 12
+    lea     r2,     [r2 + 2 * r3]
+    lea     r0,     [r0 + 2 * r1]
+  %endif
+%endrep
+    vextracti128   xm1, m0, 1
+    paddd          xm0, xm1
+    pshufd         xm1, xm0, 2
+    paddd          xm0,xm1
+    movd           eax, xm0
+    RET
 
 INIT_YMM avx2
 cglobal pixel_sad_64x64, 4,4,5