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[Draft] Fix bfloat16->float16 pass #787

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[Draft] Fix bfloat16->float16 pass #787

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27 changes: 25 additions & 2 deletions onnxruntime/core/providers/openvino/qdq_transformations/qdq_scales_fix.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -966,9 +966,32 @@ void replace_bf16_with_fp16(qdq_scales_fix::CustomGraph& gen_graph) {
auto tensor_proto = const_cast<ONNX_NAMESPACE::TensorProto*>(const_tensor_proto);
auto dt = tensor_proto->data_type();
if (dt == ONNX_NAMESPACE::TensorProto_DataType_BFLOAT16) {
auto raw_data = tensor_proto->has_raw_data() ? reinterpret_cast<std::uint16_t*>(tensor_proto->mutable_raw_data()->data()) : nullptr;
std::uint16_t* raw_data = nullptr;
if (tensor_proto->data_location() == ONNX_NAMESPACE::TensorProto_DataLocation::TensorProto_DataLocation_EXTERNAL) {
auto external_data = tensor_proto->mutable_external_data();
std::size_t address = 0;
for (auto i = 0; i < external_data->size(); ++i) {
auto& data = external_data->at(i);
char* end = nullptr;
const auto& mkey = *data.mutable_key();
if (mkey.find("offset") != mkey.npos) {
address = (size_t)std::strtoull(data.mutable_value()->data(), &end, 10);
}
}
if (address)
raw_data = reinterpret_cast<std::uint16_t*>(address);
} else if (tensor_proto->has_raw_data()) {
raw_data = reinterpret_cast<std::uint16_t*>(tensor_proto->mutable_raw_data()->data());
}
if (raw_data) {
tensor_proto->set_data_type(ONNX_NAMESPACE::TensorProto_DataType_FLOAT16);
if (tensor_proto->has_raw_data()) {
tensor_proto->set_data_type(ONNX_NAMESPACE::TensorProto_DataType_FLOAT16);
}
else {
auto ort_value = OrtValue();
gen_graph.original_graph.GetOrtValueInitializer(key, ort_value);
ort_value.GetMutable<Tensor>()->SetElementType(ONNX_NAMESPACE::TensorProto_DataType_FLOAT16);
}
std::int64_t size = 1;
for (int i = 0; i < tensor_proto->dims_size(); ++i)
size *= tensor_proto->dims()[i];
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