[x265] [PATCH 0/4] Optimise AArch64 quant/nquant primitives

[Karam Singh]

All the patches of this series have been pushed to the master branch.
*__________________________*
*Karam Singh*
*Ph.D. IIT Guwahati*
Senior Software (Video Coding) Engineer
Mobile: +91 8011279030
Block 9A, 6th floor, DLF Cyber City
Manapakkam, Chennai 600 089


On Tue, Aug 13, 2024 at 2:44 AM Hari Limaye <hari.limaye at arm.com> wrote:

> Hi,
>
> This series optimises the AArch64 Neon implementations of quant and
> nquant primitives.
>
> The series has no dependencies on any other on-list patch sets, except
> for patch:
>     [PATCH 1/4] AArch64: Remove SVE assembly implementation of quant
> which is based on refactoring changes to aarch64/asm-primitives.cpp made
> in the SAD patch series:
>     https://mailman.videolan.org/pipermail/x265-devel/2024-May/013707.html
>
> Relative performance observed compared to the existing Neon
> implementation:
>
> quant_neon:
>
>   Neoverse N1: 1.57x
>   Neoverse V1: 1.59x
>   Neoverse N2: 1.54x
>   Neoverse V2: 1.59x
>
> nquant_neon:
>
>   Neoverse N1: 1.79x
>   Neoverse V1: 1.77x
>   Neoverse N2: 1.70x
>   Neoverse V2: 1.73x
>
> Many thanks,
>
> Hari
>
> Hari Limaye (4):
>   AArch64: Remove SVE assembly implementation of quant
>   AArch64: Optimise quant_neon
>   Test: Update values used in check_nquant_primitive
>   AArch64: Optimise nquant_neon
>
>  source/common/aarch64/asm-primitives.cpp |   3 -
>  source/common/aarch64/fun-decls.h        |   2 -
>  source/common/aarch64/pixel-util-sve.S   |  57 -------------
>  source/common/aarch64/pixel-util.S       | 103 ++++++++++++-----------
>  source/test/mbdstharness.cpp             |  10 ++-
>  5 files changed, 61 insertions(+), 114 deletions(-)
>
> --
> 2.42.1
>
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>
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