x86 deformableconv2d packed unified elempack

[nihui]

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.15%. Comparing base (7f5c042) to head (75d97af).
⚠️ Report is 4 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6567      +/-   ##
==========================================
- Coverage   93.25%   93.15%   -0.10%     
==========================================
  Files         860      846      -14     
  Lines      269010   265642    -3368     
==========================================
- Hits       250857   247471    -3386     
- Misses      18153    18171      +18     

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[Copilot]

Pull request overview

This PR refactors the x86 DeformableConv2D implementation to use a single unified “packed” kernel implementation, replacing many specialized packX/packXtoY variants.

Changes:

• Replace per-elempack/out-elempack dispatch (pack4/8/16 and conversions) with a single deformableconv2d_packed() implementation.
• Update the x86 forward path to call the unified packed kernel for all non-(pack1→pack1) cases.
• Remove the legacy specialized packed kernel header implementations that are no longer referenced.

Reviewed changes

Copilot reviewed 17 out of 17 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/layer/x86/deformableconv2d_x86.cpp	Switches to including deformableconv2d_packed.h and routes packed execution through a single unified call.
src/layer/x86/deformableconv2d_packed.h	Adds unified packed deformableconv2d kernel handling multiple elempack/out_elempack combinations.
src/layer/x86/deformableconv2d_pack8to4.h	Removes legacy specialized pack8→pack4 kernel.
src/layer/x86/deformableconv2d_pack8to16.h	Removes legacy specialized pack8→pack16 kernel.
src/layer/x86/deformableconv2d_pack8to1.h	Removes legacy specialized pack8→pack1 kernel.
src/layer/x86/deformableconv2d_pack8.h	Removes legacy specialized pack8 kernel.
src/layer/x86/deformableconv2d_pack4to8.h	Removes legacy specialized pack4→pack8 kernel.
src/layer/x86/deformableconv2d_pack4to16.h	Removes legacy specialized pack4→pack16 kernel.
src/layer/x86/deformableconv2d_pack4to1.h	Removes legacy specialized pack4→pack1 kernel.
src/layer/x86/deformableconv2d_pack4.h	Removes legacy specialized pack4 kernel.
src/layer/x86/deformableconv2d_pack1to8.h	Removes legacy specialized pack1→pack8 kernel.
src/layer/x86/deformableconv2d_pack1to4.h	Removes legacy specialized pack1→pack4 kernel.
src/layer/x86/deformableconv2d_pack1to16.h	Removes legacy specialized pack1→pack16 kernel.
src/layer/x86/deformableconv2d_pack16to8.h	Removes legacy specialized pack16→pack8 kernel.
src/layer/x86/deformableconv2d_pack16to4.h	Removes legacy specialized pack16→pack4 kernel.
src/layer/x86/deformableconv2d_pack16to1.h	Removes legacy specialized pack16→pack1 kernel.
src/layer/x86/deformableconv2d_pack16.h	Removes legacy specialized pack16 kernel.

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