guan404ming opened a new pull request, #19863:
URL: https://github.com/apache/tvm/pull/19863

   ## Why
   
   The Relax AffineGrid op only handled 2D (4D theta/grid); 5D 3D inputs from 
ONNX failed.
   
   ## How
   
   - Generalize struct-info inference to 2D/3D via spatial = size_sinfo->ndim.
   - Branch TOPI affine_grid compute on 2D vs 3D.
   - Add the 3D permute path in the frontend and a test_affine_grid_3d case.


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