[x265] [PATCH 0/4] AArch64: Optimize and add pixel_var Implementations

[chen]

Hi Li,




Thank for the patches, it looks good to me, the only question is how much

improve on the performance after change asm to intrinsic.




Regards,
Chen

At 2025-06-18 02:22:25, "Li Zhang" <li.zhang2 at arm.com> wrote:
>Hi,
>
>This patch series optimizes the exisiting standard bit-depth pixel_var
>Neon intrinsics implementation, deletes the slower assembly
>implementation. It also adds Neon DotProd intrinsics implementation for
>the standard bit-depth and Neon, SVE intrinsics implementations for the
>high bit-depth of pixel_var function.
>
>Many thanks,
>Li
>
>Li Zhang (4):
>  AArch64: Optimize and clean up SBD pixel_var functions
>  AArch64: Add HBD pixel_var Neon intrinscis implementations
>  AArch64: Add SBD pixel_var Neon DotProd intrinsics implementations
>  AArch64: Add HBD pixel_var SVE intrinsics implementations
>
> source/common/CMakeLists.txt                  |   4 +-
> source/common/aarch64/asm-primitives.cpp      |  14 +-
> source/common/aarch64/fun-decls.h             |  10 -
> source/common/aarch64/neon-sve-bridge.h       |   7 +
> .../aarch64/pixel-prim-neon-dotprod.cpp       | 111 ++++++++++
> source/common/aarch64/pixel-prim-sve.cpp      | 137 ++++++++++++
> source/common/aarch64/pixel-prim.cpp          | 197 +++++++++++++++---
> source/common/aarch64/pixel-prim.h            |   6 +
> source/common/aarch64/pixel-util-common.S     |  27 ---
> source/common/aarch64/pixel-util-sve2.S       | 195 -----------------
> source/common/aarch64/pixel-util.S            |  61 ------
> 11 files changed, 434 insertions(+), 335 deletions(-)
> create mode 100644 source/common/aarch64/pixel-prim-neon-dotprod.cpp
> create mode 100644 source/common/aarch64/pixel-prim-sve.cpp
>
>--
>2.39.5 (Apple Git-154)
>
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