Fix endianness conversion in numpy_helper.to_array() #5904
Merged
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Description
This removes the invocation of
convert_endian()
fromnumpy_helper.to_array()
in favor of another implementation, since convert_endian() modifies the TensorProto.Motivation and Context
This change was needed due to observed issues when trying to load an ONNX model that was exported on a s390x system via tf2onnx. Debugging showed that the TeensorProto was being modified by endianness conversion operations, which led to model incorrectness under certain circumstances.
Fixes #5901.