96 lines
3.3 KiB
C++
96 lines
3.3 KiB
C++
/* Copyright 2018 The TensorFlow Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==============================================================================*/
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#ifndef TENSORFLOW_COMPILER_XLA_SERVICE_HLO_CLONE_CONTEXT_H_
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#define TENSORFLOW_COMPILER_XLA_SERVICE_HLO_CLONE_CONTEXT_H_
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#include <string>
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#include "absl/container/flat_hash_map.h"
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#include "tensorflow/compiler/xla/map_util.h"
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namespace xla {
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class HloInstruction;
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class HloComputation;
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class HloModule;
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// Data structure used to track the cloning of HloInstruction and HloComputation
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// objects.
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class HloCloneContext {
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public:
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// Creates a new HloCloneContext object to clone HloInstruction and
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// HloComputation objects to be added to the module specified as argument.
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// The suffix string will be appended to computation names.
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explicit HloCloneContext(HloModule* module, const string& suffix = "")
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: module_(module), suffix_(suffix) {}
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HloModule* module() const { return module_; }
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const string& suffix() const { return suffix_; }
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void MapInstruction(const HloInstruction* old_instruction,
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HloInstruction* new_instruction) {
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instructions_[old_instruction] = new_instruction;
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}
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void MapComputation(const HloComputation* old_computation,
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HloComputation* new_computation) {
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computations_[old_computation] = new_computation;
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}
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// Finds the new instruction mapped to its old copy, or return nullptr in case
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// it is not found.
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HloInstruction* FindInstruction(const HloInstruction* old_instruction) const {
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return FindOrDefault(instructions_, old_instruction, nullptr);
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}
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// Finds the new computation mapped to its old copy, or return nullptr in case
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// it is not found.
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HloComputation* FindComputation(const HloComputation* old_computation) const {
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return FindOrDefault(computations_, old_computation, nullptr);
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}
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// Retrieves the new instruction mapped to its old copy, or fail if not found.
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HloInstruction* GetInstruction(const HloInstruction* old_instruction) const {
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return FindOrDie(instructions_, old_instruction);
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}
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// Retrieves the new computation mapped to its old copy, or fail if not found.
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HloComputation* GetComputation(const HloComputation* old_computation) const {
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return FindOrDie(computations_, old_computation);
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}
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const absl::flat_hash_map<const HloInstruction*, HloInstruction*>&
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cloned_instructions() const {
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return instructions_;
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}
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const absl::flat_hash_map<const HloComputation*, HloComputation*>&
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cloned_computations() const {
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return computations_;
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}
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private:
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HloModule* module_;
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string suffix_;
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absl::flat_hash_map<const HloInstruction*, HloInstruction*> instructions_;
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absl::flat_hash_map<const HloComputation*, HloComputation*> computations_;
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};
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} // namespace xla
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#endif // TENSORFLOW_COMPILER_XLA_SERVICE_HLO_CLONE_CONTEXT_H_
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