[x265] [PATCH] blockcopy_pp[4x16:4x32], sse2 asm code optimization

[chen]

right, a few improve because you need more register, it generate push/pop stack operators

At 2015-02-03 14:28:43,praveen at multicorewareinc.com wrote:
># HG changeset patch
># User Praveen Tiwari
># Date 1422944898 -19800
># Node ID 059892f65db3e4c70017241ea847717e11be0124
># Parent  b0be54fb45cf1cbd3bf5a0543da34fb1a854b25f
>blockcopy_pp[4x16:4x32], sse2 asm code optimization
>
>improved, 222.93c -> 206.77c
>          409.49c -> 392.13c
>
>diff -r b0be54fb45cf -r 059892f65db3 source/common/x86/blockcopy8.asm
>--- a/source/common/x86/blockcopy8.asm Tue Feb 03 11:25:35 2015 +0530
>+++ b/source/common/x86/blockcopy8.asm Tue Feb 03 11:58:18 2015 +0530
>@@ -181,37 +181,36 @@
> ;-----------------------------------------------------------------------------
> %macro BLOCKCOPY_PP_W4_H8 2
> INIT_XMM sse2
>-cglobal blockcopy_pp_%1x%2, 4, 5, 4
>+cglobal blockcopy_pp_%1x%2, 4, 7, 4
>     mov    r4d,    %2/8
>+    lea    r5,     [3 * r1]
>+    lea    r6,     [3 * r3]
>+
> .loop:
>     movd     m0,     [r2]
>     movd     m1,     [r2 + r3]
>-    lea      r2,     [r2 + 2 * r3]
>-    movd     m2,     [r2]
>-    movd     m3,     [r2 + r3]
>-
>-    movd     [r0],                m0
>-    movd     [r0 + r1],           m1
>-    lea      r0,                  [r0 + 2 * r1]
>-    movd     [r0],                m2
>-    movd     [r0 + r1],           m3
>-
>-    lea       r0,     [r0 + 2 * r1]
>-    lea       r2,     [r2 + 2 * r3]
>+    movd     m2,     [r2 + 2 * r3]
>+    movd     m3,     [r2 + r6]
>+
>+    movd     [r0],          m0
>+    movd     [r0 + r1],     m1
>+    movd     [r0 + 2 * r1], m2
>+    movd     [r0 + r5],     m3
>+
>+    lea      r2,     [r2 + 4 * r3]
>     movd     m0,     [r2]
>     movd     m1,     [r2 + r3]
>-    lea      r2,     [r2 + 2 * r3]
>-    movd     m2,     [r2]
>-    movd     m3,     [r2 + r3]
>-
>-    movd     [r0],                m0
>-    movd     [r0 + r1],           m1
>-    lea      r0,                  [r0 + 2 * r1]
>-    movd     [r0],                m2
>-    movd     [r0 + r1],           m3
>-
>-    lea       r0,                  [r0 + 2 * r1]
>-    lea       r2,                  [r2 + 2 * r3]
>+    movd     m2,     [r2 + 2 * r3]
>+    movd     m3,     [r2 + r6]
>+
>+    lea      r0,            [r0 + 4 * r1]
>+    movd     [r0],          m0
>+    movd     [r0 + r1],     m1
>+    movd     [r0 + 2 * r1], m2
>+    movd     [r0 + r5],     m3
>+
>+    lea       r0,                  [r0 + 4 * r1]
>+    lea       r2,                  [r2 + 4 * r3]
> 
>     dec       r4d
>     jnz       .loop
>@@ -219,7 +218,6 @@
> %endmacro
> 
> BLOCKCOPY_PP_W4_H8 4, 16
>-
> BLOCKCOPY_PP_W4_H8 4, 32
> 
> ;-----------------------------------------------------------------------------
>_______________________________________________
>x265-devel mailing list
>x265-devel at videolan.org
>https://mailman.videolan.org/listinfo/x265-devel
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.videolan.org/pipermail/x265-devel/attachments/20150203/c61f7064/attachment.html>