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Cast long inputs to float32 before feeding to xnnpack graph runtime #553

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Cast long inputs to float32 before feeding to xnnpack graph runtime #553

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11 changes: 11 additions & 0 deletions backends/xnnpack/runtime/XNNExecutor.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -68,6 +68,17 @@ Error XNNExecutor::set_external_input(uint32_t id, Tensor* input) {
return Error::NotSupported;
#endif
} else {
// TODO(T165403530): Test insure accuracy for int64 --> float32 conversion
if (input->scalar_type() == ScalarType::Long) {
// Input data type is int64. However, XNNPACK doesn't support
// int64. This means that the data needs to be casted to float
// In order for XNNPACK to properly use it.
const int64_t* data_64 = input->const_data_ptr<int64_t>();
float* data_f32 = input->mutable_data_ptr<float>();
for (int j = 0; j < input->numel(); j++) {
data_f32[j] = data_64[j];
}
}
externals_.emplace_back(xnn_external_value{id, input->mutable_data_ptr()});
}
return Error::Ok;
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