[MNNConvert:Bugfix] Fix ONNX Resize optional inputs and Einsum weighted sum lowering#4254

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LudovicoYIN wants to merge 2 commits intoalibaba:masterfrom

LudovicoYIN:feature/fix_onnx_resize_einsum_convert

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LudovicoYIN commented Mar 13, 2026 •

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Summary

Fix ONNX conversion for:

Resize with empty optional inputs
Einsum("i,i...->...") weighted sum pattern

Changes

handle empty optional inputs for ONNX Resize
add direct Resize converter for constant scales / sizes
fix raw Einsum equation handling
add dedicated lowering for Einsum("i,i...->...")

Tests

add TestOnnxResize
add TestOnnxEinsum
add ExprResizeComputeTest coverage for 3D Interp

Validation

out.onnx converts successfully
converted .mnn runs on CPU
output matches ONNX Runtime

fixed #4251

LudovicoYIN added 2 commits

March 13, 2026 14:14


          [MNNConvert:Bugfix] Fix ONNX Resize optional inputs and Einsum weight…

e089f27

…ed sum lowering


          Add regression tests for ONNX Resize and Einsum conversion

daf7f8f

wangzhaode self-assigned this

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