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_XLA_SERVICE_CPU_CPU_LAYOUT_ASSIGNMENT_H_ 17 #define TENSORFLOW_COMPILER_XLA_SERVICE_CPU_CPU_LAYOUT_ASSIGNMENT_H_ 18 19 #include "tensorflow/compiler/xla/service/computation_layout.h" 20 #include "tensorflow/compiler/xla/service/cpu/target_machine_features.h" 21 #include "tensorflow/compiler/xla/service/layout_assignment.h" 22 #include "tensorflow/core/lib/core/status.h" 23 24 namespace xla { 25 namespace cpu { 26 27 // CPU-specific layout assignment pass which preassigns layouts to satisfy 28 // layout constraints for operands and results of library calls. 29 class CpuLayoutAssignment : public LayoutAssignment { 30 public: 31 explicit CpuLayoutAssignment( 32 ComputationLayout* entry_computation_layout, 33 const TargetMachineFeatures* target_machine_features, 34 ChannelLayoutConstraints* channel_constraints = nullptr) LayoutAssignment(entry_computation_layout,channel_constraints)35 : LayoutAssignment(entry_computation_layout, channel_constraints), 36 target_machine_features_(*target_machine_features) {} ~CpuLayoutAssignment()37 ~CpuLayoutAssignment() override {} 38 39 protected: 40 Status AddBackendConstraints(LayoutConstraints* constraints) override; 41 42 const TargetMachineFeatures& target_machine_features_; 43 }; 44 45 } // namespace cpu 46 } // namespace xla 47 48 #endif // TENSORFLOW_COMPILER_XLA_SERVICE_CPU_CPU_LAYOUT_ASSIGNMENT_H_ 49