SebastianBoblest commented on code in PR #11981: URL: https://github.com/apache/tvm/pull/11981#discussion_r914505662
########## src/relay/collage/dataflow_graph.h: ########## @@ -0,0 +1,77 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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. + */ + +/*! + * \file src/relay/collage/dataflow_graph.h + * \brief A representation of the dataflow for an overall Relay expression. + */ +#ifndef TVM_RELAY_COLLAGE_DATAFLOW_GRAPH_H_ +#define TVM_RELAY_COLLAGE_DATAFLOW_GRAPH_H_ + +#include <tvm/relay/expr.h> + +#include <memory> +#include <vector> + +#include "../ir/indexed_graph.h" +#include "./index_set.h" + +namespace tvm { +namespace relay { +namespace collage { + +/*! + * \brief Represents the dataflow of an overall Relay expression. + */ +class DataflowGraph { + public: + using Node = IndexedGraph<Expr>::Node; + + explicit DataflowGraph(Expr expr); + + size_t size() const { return indexed_graph_->size(); } + const Node* index_to_node(PostDfsIndex index) const { + return indexed_graph_->index_to_node(index); + } + const Node* item_to_node(const Expr& expr) const { return indexed_graph_->item_to_node(expr); } + const Node* item_to_node(const ExprNode* expr_node) const { + return indexed_graph_->item_to_node(expr_node); + } + const Expr& expr() const { return expr_; } + const IndexedGraph<Expr>& indexed_graph() const { return *indexed_graph_; } + + const IndexSet& downstream_of(PostDfsIndex index) const { + ICHECK_LT(index, indexed_graph_->size()); + return downstream_map_[index]; + } + + private: + /*! \brief The overall expression. */ + Expr expr_; + /*! \brief The indexed graph which captures the main dataflow. */ + std::unique_ptr<IndexedGraph<Expr>> indexed_graph_; + /*! \brief Map from a node's PostDfsIndex to the set of it's downstream dataflow node indexes. */ Review Comment: ```suggestion /*! \brief Map from a node's PostDfsIndex to the set of its downstream dataflow node indexes. */ ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
