[FX] Support weight quantization for operations where weight_port_id != 1
#3334
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Changes
Updated the FX backend’s
_get_input_scale_shapeto use the FX insertion point shape and, when available, the actual weight tensor’s shape to compute the per‑channel scale shape.Adjusted statistics collector in
_get_stat_collectorso that the reduction and aggregation axes are derived using the same channel axes as used for scale shape computation.Related tickets
Issue #3206
Tests
All tests run successfully except:
test_smooth_quant.py::TestTorchSQAlgorithm::test_smooth_quant_algo[LinearMultiShapeModel-reference_values0]
RuntimeError: shape '[1, 1, 2]' is invalid for input of size 1.