[x265] [PATCH] blockcopy_pp_6x8 sse2 asm code optimization

[chen]

How about maskmovdqu

At 2015-02-03 17:00:54,praveen at multicorewareinc.com wrote:
># HG changeset patch
># User Praveen Tiwari
># Date 1422954042 -19800
># Node ID d212ce9fa3705b9e7d4d23f14412bd28fe3bbfde
># Parent  059892f65db3e4c70017241ea847717e11be0124
>blockcopy_pp_6x8 sse2 asm code optimization
>
>improved, 248.67c -> 212.56c
>
>diff -r 059892f65db3 -r d212ce9fa370 source/common/x86/blockcopy8.asm
>--- a/source/common/x86/blockcopy8.asm Tue Feb 03 11:58:18 2015 +0530
>+++ b/source/common/x86/blockcopy8.asm Tue Feb 03 14:30:42 2015 +0530
>@@ -224,65 +224,51 @@
> ; void blockcopy_pp_6x8(pixel* dst, intptr_t dstStride, const pixel* src, intptr_t srcStride)
> ;-----------------------------------------------------------------------------
> INIT_XMM sse2
>-cglobal blockcopy_pp_6x8, 4, 7, 8
>-
>-    movd     m0,     [r2]
>-    movd     m1,     [r2 + r3]
>-    movd     m2,     [r2 + 2 * r3]
>-    lea      r5,     [r2 + 2 * r3]
>-    movd     m3,     [r5 + r3]
>-
>-    movd     m4,     [r5 + 2 * r3]
>-    lea      r5,     [r5 + 2 * r3]
>-    movd     m5,     [r5 + r3]
>-    movd     m6,     [r5 + 2 * r3]
>-    lea      r5,     [r5 + 2 * r3]
>-    movd     m7,     [r5 + r3]
>-
>-    movd     [r0],                m0
>-    movd     [r0 + r1],           m1
>-    movd     [r0 + 2 * r1],       m2
>-    lea      r6,                  [r0 + 2 * r1]
>-    movd     [r6 + r1],           m3
>-
>-    movd     [r6 + 2 * r1],        m4
>-    lea      r6,                   [r6 + 2 * r1]
>-    movd     [r6 + r1],            m5
>-    movd     [r6 + 2 * r1],        m6
>-    lea      r6,                   [r6 + 2 * r1]
>-    movd     [r6 + r1],            m7
>-
>-    mov     r4w,     [r2 + 4]
>-    mov     r5w,     [r2 + r3 + 4]
>-    mov     r6w,     [r2 + 2 * r3 + 4]
>-
>-    mov     [r0 + 4],            r4w
>-    mov     [r0 + r1 + 4],       r5w
>-    mov     [r0 + 2 * r1 + 4],   r6w
>-
>-    lea     r0,              [r0 + 2 * r1]
>-    lea     r2,              [r2 + 2 * r3]
>-
>-    mov     r4w,             [r2 + r3 + 4]
>-    mov     r5w,             [r2 + 2 * r3 + 4]
>-
>-    mov     [r0 + r1 + 4],       r4w
>-    mov     [r0 + 2 * r1 + 4],   r5w
>-
>-    lea     r0,              [r0 + 2 * r1]
>-    lea     r2,              [r2 + 2 * r3]
>-
>-    mov     r4w,             [r2 + r3 + 4]
>-    mov     r5w,             [r2 + 2 * r3 + 4]
>-
>-    mov     [r0 + r1 + 4],       r4w
>-    mov     [r0 + 2 * r1 + 4],   r5w
>-
>-    lea     r0,              [r0 + 2 * r1]
>-    lea     r2,              [r2 + 2 * r3]
>-
>-    mov     r4w,             [r2 + r3 + 4]
>-    mov     [r0 + r1 + 4],       r4w
>+cglobal blockcopy_pp_6x8, 4, 7, 3
>+
>+    movd     m0,  [r2]
>+    mov      r4w, [r2 + 4]
>+    movd     m1,  [r2 + r3]
>+    mov      r5w, [r2 + r3 + 4]
>+    movd     m2,  [r2 + 2 * r3]
>+    mov      r6w, [r2 + 2 * r3 + 4]
>+
>+    movd     [r0],              m0
>+    mov      [r0 + 4],          r4w
>+    movd     [r0 + r1],         m1
>+    mov      [r0 + r1 + 4],     r5w
>+    movd     [r0 + 2 * r1],     m2
>+    mov      [r0 + 2 * r1 + 4], r6w
>+
>+    lea      r2,  [r2 + 2 * r3]
>+    movd     m0,  [r2 + r3]
>+    mov      r4w, [r2 + r3 + 4]
>+    movd     m1,  [r2 + 2 * r3]
>+    mov      r5w, [r2 + 2 * r3 + 4]
>+    lea      r2,  [r2 + 2 * r3]
>+    movd     m2,  [r2 + r3]
>+    mov      r6w, [r2 + r3 + 4]
>+
>+    lea      r0,                [r0 + 2 * r1]
>+    movd     [r0 + r1],         m0
>+    mov      [r0 + r1 + 4],     r4w
>+    movd     [r0 + 2 * r1],     m1
>+    mov      [r0 + 2 * r1 + 4], r5w
>+    lea      r0,                [r0 + 2 * r1]
>+    movd     [r0 + r1],         m2
>+    mov      [r0 + r1 + 4],     r6w
>+
>+    lea      r2,                [r2 + 2 * r3]
>+    movd     m0,                [r2]
>+    mov      r4w,               [r2 + 4]
>+    movd     m1,                [r2 + r3]
>+    mov      r5w,               [r2 + r3 + 4]
>+
>+    lea      r0,            [r0 + 2 * r1]
>+    movd     [r0],          m0
>+    mov      [r0 + 4],      r4w
>+    movd     [r0 + r1],     m1
>+    mov      [r0 + r1 + 4], r5w
>     RET
> 
> ;-----------------------------------------------------------------------------
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