[x265] Fwd: [PATCH] blockcopy_sp_4x8, optimized asm code

[Praveen Tiwari]

---------- Forwarded message ----------
From: chen <chenm003 at 163.com>
Date: Fri, Nov 8, 2013 at 3:29 PM
Subject: Re: [x265] [PATCH] blockcopy_sp_4x8, optimized asm code
To: Development for x265 <x265-devel at videolan.org>


At 2013-11-08 17:34:19,praveen at multicorewareinc.com wrote:

># HG changeset patch
># User Praveen Tiwari
># Date 1383903250 -19800
># Node ID 1e6bf52b6e3471b81e636569daa667f6dec9838a
># Parent  44ac213169c906eab5cba6b4aba876391b81da99
>blockcopy_sp_4x8, optimized asm code
>
>diff -r 44ac213169c9 -r 1e6bf52b6e34 source/common/x86/blockcopy8.asm
>--- a/source/common/x86/blockcopy8.asm Fri Nov 08 14:46:07 2013 +0530
>+++ b/source/common/x86/blockcopy8.asm Fri Nov 08 15:04:10 2013 +0530
>@@ -948,45 +948,42 @@
> ; void blockcopy_sp_4x8(pixel *dest, intptr_t destStride, int16_t *src, intptr_t srcStride)
> ;-----------------------------------------------------------------------------
> INIT_XMM sse2
>-cglobal blockcopy_sp_4x8, 4, 6, 8, dest, destStride, src, srcStride
>+cglobal blockcopy_sp_4x8, 4, 4, 8, dest, destStride, src, srcStride
>>you have used r5
Min, r5 was in old code I have removed that. I think you are talking about
[ -lea        r5,      [r4 + 2 * r3] ]. In new code I have used just 4
registers.



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