1 /* Copyright 2017 The TensorFlow Authors. All Rights Reserved. 2 3 Licensed under the Apache License, Version 2.0 (the "License"); 4 you may not use this file except in compliance with the License. 5 You may obtain a copy of the License at 6 7 http://www.apache.org/licenses/LICENSE-2.0 8 9 Unless required by applicable law or agreed to in writing, software 10 distributed under the License is distributed on an "AS IS" BASIS, 11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 See the License for the specific language governing permissions and 13 limitations under the License. 14 ==============================================================================*/ 15 16 #ifndef TENSORFLOW_COMPILER_TF2XLA_TYPE_UTIL_H_ 17 #define TENSORFLOW_COMPILER_TF2XLA_TYPE_UTIL_H_ 18 19 #include "tensorflow/compiler/xla/statusor.h" 20 #include "tensorflow/compiler/xla/xla_data.pb.h" 21 #include "tensorflow/core/framework/types.pb.h" 22 #include "tensorflow/core/lib/core/status.h" 23 24 namespace tensorflow { 25 26 // Converts a Tensorflow DataType to an XLA PrimitiveType. 27 Status DataTypeToPrimitiveType(DataType data_type, xla::PrimitiveType* type); 28 29 // Converts an XLA PrimitiveType to a TensorFlow DataType. 30 // Caution: The mapping from TF types to XLA types is not one-to-one: for 31 // example, both DT_INT8 and DT_QINT8 map to xla::S8. So the inverse is not a 32 // uniquely defined function. This is fine if you want a way to encode an XLA 33 // object as a TensorFlow object (e.g., in XRT); whereas if you started with a 34 // TensorFlow object in the first place, you most likely should preserve the 35 // original TensorFlow type, rather than trying to convert an XLA type back into 36 // a TensorFlow type. 37 xla::StatusOr<DataType> EncodePrimitiveTypeAsDataType(xla::PrimitiveType type); 38 39 } // namespace tensorflow 40 41 #endif // TENSORFLOW_COMPILER_TF2XLA_TYPE_UTIL_H_ 42