Add SVE2 optimizations for SynetConvolution16bNhwcDepthwise - #851
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Port the NHWC depthwise bf16 path to SVE/SVE2/SVE-BF16 with VL-agnostic default and 3x3 kernels, wire SynetConvolution16bInit dispatch, extend depthwise tests, update VS2022 Sve2 project files, and release 7.2.165 notes. Co-authored-by: Ihar Yermalayeu <igor.ermolaev@altezza.org>
ermig1979
marked this pull request as ready for review
August 13, 2026 05:55
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Summary
Adds SVE/SVE2/SVE-BF16 optimizations for
Base::SynetConvolution16bNhwcDepthwiseon ARM/ARM64.SimdSve2SynetConvolution16bNhwcDepthwise.cppwith VL-agnostic default depthwise and specialized 3x3 kernels (bf16/f32 src/dst viaLoadSrc+ activation + bf16 store).Sve2::SynetConvolution16bInitto selectSve2::SynetConvolution16bNhwcDepthwisewhen preferable (before NchwGemm / Neon fallback).Sve2::SynetConvolution16bNhwcDepthwiseinSimdSynetConvolution16b.h.Test::SynetConvolution16bAutoTest.prj/vs2022/Sve2.vcxprojand.filters.docs/2026.htmlrelease 7.2.165 notes to include SVE2 for this class.Test plan
AGENTS.md, then frombuild/:export LD_LIBRARY_PATH="$(pwd):$LD_LIBRARY_PATH"./Test "-r=.." -fi=SynetConvolution16b -tt=1 -ts=1Sve2::NhwcDepthwisefor depthwise shapes (e.g. group==srcC) and matches Base within EPS.