Changeset e2946e5c in ffmpeg

Timestamp:

Apr 8, 2013, 12:26:34 AM (12 years ago)

Author:

Michael Niedermayer <michaelni@gmx.at>

Branches:

master

Children:

1f97dfb

Parents:

1adf54de

git-author:

Christophe Gisquet <christophe.gisquet@gmail.com> (04/07/13 20:20:33)

git-committer:

Michael Niedermayer <michaelni@gmx.at> (04/08/13 00:26:34)

Message:

x86: sbrdsp: implement SSE qmf_deint_bfly

From 312 to 89/68 (sse/sse2) cycles on Arrandale and Win64.
Sandybridge: 68/47 cycles.

Having a loop counter is a 7 cycle gain.
Unrolling is another 7 cycle gain.
Working in reverse scan is another 6 cycles.

Signed-off-by: Michael Niedermayer <​michaelni@gmx.at>

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