Hi Chen, The performance in the commitmsg of weight_pp for SBD is relative to the removed Neon asm. The new intrinsics code is faster when CTZ(w0) < shift (e.g. w0 = 127, shift = 6) and equal in other cases.
Relative performance compared to Neon asm [SBD]: (w0 = 64) Neoverse N1: 1.19x Neoverse N2: 1.00x Neoverse V1: 1.10x Neoverse V2: 1.01x (w0 = 127) Neoverse N1: 3.05x Neoverse N2: 3.63x Neoverse V1: 3.25x Neoverse V2: 3.58x Regards, Micro From: chen <chenm...@163.com> Date: Tuesday, 8 April 2025 at 03:32 To: Development for x265 <x265-devel@videolan.org> Cc: nd <n...@arm.com>, Micro Daryl Robles <microdaryl.rob...@arm.com> Subject: Re:[x265] [PATCH 0/2] Add Neon impl of planecopy_cp and weight_pp Hi Micro, How about performance compare to removed weight_pp_neon? Regards, Chen At 2025-04-07 18:57:14, "Micro Daryl Robles" <microdaryl.rob...@arm.com> wrote: >Hi, > >This patch series adds Neon intrinsic implementations of >planecopy_cp and weight_pp that work for both SBD and HBD. > >This series is based on the master branch. > >Many thanks, >Micro > >Micro Daryl Robles (2): > AArch64: Add SBD and HBD Neon implementation of planecopy_cp > AArch64: Add SBD and HBD Neon implementation of weight_pp > > source/common/aarch64/asm-primitives.cpp | 4 - > source/common/aarch64/fun-decls.h | 3 - > source/common/aarch64/pixel-prim.cpp | 183 +++++++++++++++++++++++ > source/common/aarch64/pixel-util.S | 144 ------------------ > source/test/pixelharness.cpp | 50 +++++-- > 5 files changed, 217 insertions(+), 167 deletions(-) > >-- >2.34.1 > >_______________________________________________ >x265-devel mailing list >x265-devel@videolan.org >https://mailman.videolan.org/listinfo/x265-devel IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.
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