Fix weight layout detection for MatMul with transpose in OpenVINO backend#3958
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naraen-ram wants to merge 1 commit intoopenvinotoolkit:developfrom
Open
Fix weight layout detection for MatMul with transpose in OpenVINO backend#3958naraen-ram wants to merge 1 commit intoopenvinotoolkit:developfrom
naraen-ram wants to merge 1 commit intoopenvinotoolkit:developfrom
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Fixes #3230
Description
Fix incorrect weight layout detection for MatMul layers when transpose is applied via OpenVINO graph rather than constant attributes.
Previously, constant_layer_attrs["transpose"] did not reflect graph-level transpose nodes, which could lead to incorrect channel axis detection during weight compression.
This change checks input_attributes metadata to correctly determine transpose state before computing layout.
Testing
Reproduced issue using custom Transpose → MatMul OpenVINO model.
Verified using:
pytest tests/openvino/native/quantization/test_weights_compression.py -k matmul
Result:
12 passed, 0 failed
Impact
Fixes weight compression correctness for: