[x265] [PATCH] asm: Replaced SSE4 instructions with SSE2 and general purpose instructions for chroma vsp filter functions

[Nabajit Deka]

Ignore this patch.


On Wed, Nov 13, 2013 at 5:07 PM, Nabajit Deka
<nabajit at multicorewareinc.com>wrote:

> Okay. I will keep the earlier SSE4 code.
>
>
> On Wed, Nov 13, 2013 at 4:59 PM, chen <chenm003 at 163.com> wrote:
>
>> At 2013-11-13 14:53:27,nabajit at multicorewareinc.com wrote:
>>
>> ># HG changeset patch
>> ># User Nabajit Deka
>> ># Date 1384325281 -19800
>> >#      Wed Nov 13 12:18:01 2013 +0530
>> ># Node ID 017763dc543d091170082eccf7b42a0c47c453ff
>> ># Parent  c4ca80d19105ccf1ba2ec14dd65915f2820a660d
>>
>> >asm: Replaced SSE4 instructions with SSE2 and general purpose instructions for chroma vsp filter functions.
>> >
>> >diff -r c4ca80d19105 -r 017763dc543d source/common/x86/ipfilter8.asm
>> >--- a/source/common/x86/ipfilter8.asm Tue Nov 12 19:10:23 2013 +0530
>> >+++ b/source/common/x86/ipfilter8.asm Wed Nov 13 12:18:01 2013 +0530
>> >@@ -3183,11 +3183,16 @@
>> >     packssdw  m0, m2
>> >     packuswb  m0, m0
>> >
>> >-    pextrw    [r2], m0, 0
>> >-    pextrw    [r2 + r3], m0, 1
>> >-    pextrw    [r2 + 2 * r3], m0, 2
>> >+    movd      r5d, m0
>> >+    mov       [r2], r5w
>> >+    shr       r5d, 16
>> >+    mov       [r2 + r3], r5w
>> >+    pshufd    m0, m0, 1
>> >+    movd      r5d, m0
>> pshufd + movd is slower than pextrd
>>
>> >+    mov       [r2 + 2 * r3], r5w
>> >+    shr       r5d, 16
>> >     lea       r2, [r2 + 2 * r3]
>> >-    pextrw    [r2 + r3], m0, 3
>> >+    mov       [r2 + r3], r5w
>> >
>> >     lea       r2, [r2 + 2 * r3]
>> >
>>
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>>
>
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