[x265] [PATCH] blockfill_s_8x8 sse2 asm code optimization

[praveen at multicorewareinc.com]

# HG changeset patch
# User Praveen Tiwari
# Date 1422867249 -19800
# Branch stable
# Node ID 2618352a21d5917ee8c1f79bcc159e858dd19daa
# Parent  e2c958ff874e2bf8992ba22605e993530e8a2d8c
blockfill_s_8x8 sse2 asm code optimization

improved, 100.04c -> 90.05c

diff -r e2c958ff874e -r 2618352a21d5 source/common/x86/blockcopy8.asm
--- a/source/common/x86/blockcopy8.asm	Sat Jan 31 13:48:34 2015 -0600
+++ b/source/common/x86/blockcopy8.asm	Mon Feb 02 14:24:09 2015 +0530
@@ -1748,9 +1748,10 @@
 ; void blockfill_s_8x8(int16_t* dst, intptr_t dstride, int16_t val)
 ;-----------------------------------------------------------------------------
 INIT_XMM sse2
-cglobal blockfill_s_8x8, 3, 3, 1, dst, dstStride, val
+cglobal blockfill_s_8x8, 3, 4, 1, dst, dstStride, val
 
 add        r1,            r1
+lea        r3,            [3 * r1]
 
 movd       m0,            r2d
 pshuflw    m0,            m0,         0
@@ -1760,17 +1761,13 @@
 movu       [r0 + r1],     m0
 movu       [r0 + 2 * r1], m0
 
-lea        r0,            [r0 + 2 * r1]
+movu       [r0 + r3],     m0
+movu       [r0 + 4 * r1], m0
+
+lea        r0,            [r0 + 4 * r1]
 movu       [r0 + r1],     m0
 movu       [r0 + 2 * r1], m0
-
-lea        r0,            [r0 + 2 * r1]
-movu       [r0 + r1],     m0
-movu       [r0 + 2 * r1], m0
-
-lea        r0,            [r0 + 2 * r1]
-movu       [r0 + r1],     m0
-
+movu       [r0 + r3],     m0
 RET
 
 ;-----------------------------------------------------------------------------