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+/*
+ * Copyright (c) 2019 Samsung Electronics Co., Ltd. All Rights Reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "ConstantInsertionPass.h"
+
+#include "backend/Backend.h"
+#include <ir/Graph.h>
+#include <util/Utils.h>
+
+namespace onert
+{
+namespace ir
+{
+namespace pass
+{
+
+void ConstantInsertionPass::callback(const OperationIndex &node_index, Operation &node)
+{
+ const auto &op_sequence_index = _lowered_graph.op_seqs().getOperation(node_index);
+ const auto op_seq_lower_info = _lowered_graph.getLowerInfo(op_sequence_index);
+ const auto backend = op_seq_lower_info->backend();
+ const auto layout = op_seq_lower_info->layout();
+ const auto factor = operand::PermuteFactor{backend, layout};
+
+ for (const auto input : node.getInputs())
+ {
+ auto &object = _graph.operands().at(input);
+
+ if (object.isConstant())
+ {
+ const auto key = ReplaceKey{input, factor};
+ if (_replace_operands_map.count(key) == 0)
+ {
+ auto new_object = object;
+ // TODO Remove const_case
+ const_cast<std::list<OperationIndex> &>(new_object.getDef().list()).clear();
+ const_cast<std::list<OperationIndex> &>(new_object.getUses().list()).clear();
+ const auto new_index = _graph.operands().emplace(new_object);
+ _replace_operands_map[key] = new_index;
+
+ _lowered_graph.setLowerInfo(new_index, std::make_unique<operand::LowerInfo>());
+ _lowered_graph.getLowerInfo(new_index)->addDefPermuteFactor(factor);
+ }
+
+ const auto replaced_input = _replace_operands_map[key];
+ // Update op_seq
+ if (_lowered_graph.op_seqs().at(op_sequence_index).getInputs().contains(input))
+ {
+ _lowered_graph.op_seqs().at(op_sequence_index).replaceInput(input, replaced_input);
+ }
+
+ // Update node
+ node.replaceInput(input, replaced_input);
+
+ // Update operand
+ auto &replaced_object = _graph.operands().at(replaced_input);
+ replaced_object.appendUse(node_index);
+
+ // Update lower_info
+ auto replaced_lower_info = _lowered_graph.getLowerInfo(replaced_input);
+ replaced_lower_info->addUsePermuteFactor(factor);
+
+ // Remove this node from def and uses of origin operand
+ if (object.getDef().contains(node_index))
+ {
+ object.removeDef(node_index);
+ }
+ object.removeUse(node_index);
+
+ // Remove origin operand
+ if (object.getDef().size() == 0 && object.getUses().size() == 0)
+ {
+ _graph.removeOperand(input);
+ _lowered_graph.removeLowerInfo(input);
+ }
+ }
+ }
+
+ // Now this runtime does not support the node making output as constant
+ for (const auto &output : node.getOutputs())
+ {
+ UNUSED_RELEASE(output);
+ assert(!_graph.operands().at(output).isConstant());
+ }
+}
+
+} // namespace pass
+} // namespace ir
+} // namespace onert