[Relax] Add conv3d_transpose and ONNX ConvTranspose 3D support#18948
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tlopex merged 2 commits intoapache:mainfrom Mar 29, 2026
Merged
[Relax] Add conv3d_transpose and ONNX ConvTranspose 3D support#18948tlopex merged 2 commits intoapache:mainfrom
tlopex merged 2 commits intoapache:mainfrom
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Introduce relax.nn.conv3d_transpose (attrs, C++ inference/layout, Python API) and lower it to TOPI group_conv3d_transpose_ncdhw when using NCDHW/IODHW with dilation 1, matching the conv2d_transpose legalization policy. Wire the Relax ONNX frontend to emit conv3d_transpose for 5D inputs. Extend tests for ONNX, struct info, LegalizeOps, and TVMScript round-trip; fix ConvTranspose test output spatial size to include output_padding.
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This pull request implements the conv3d_transpose operator in TVM Relax, including its C++ and Python APIs, attribute definitions, and ONNX frontend support. It also provides legalization logic to TOPI and comprehensive unit tests for shape inference and frontend integration. The review feedback identifies a typo in the Python docstring, suggests a more idiomatic dilation check in the legalization pass, and points out a redundant, unreachable logic block in the C++ struct info inference code.
- Fix conv3d_transpose out_dtype docstring wording - Use any(d != 1 for d in dilation) in conv2d/conv3d transpose legalize - Remove unreachable output_padding else-if in conv2d/conv3d transpose infer
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Introduce relax.nn.conv3d_transpose (attrs, C++ inference/layout, Python API) and lower it to TOPI group_conv3d_transpose_ncdhw when using NCDHW/IODHW with dilation 1, matching the conv2d_transpose legalization policy.
Wire the Relax ONNX frontend to emit conv3d_transpose for 5D inputs. Extend tests for ONNX, struct info, LegalizeOps, and TVMScript round-trip; fix ConvTranspose test output spatial size to include output_padding.#18945