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// Copyright (c) 2019 PaddlePaddle Authors. 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.
#pragma once
#include <list>
#include <memory>
#include <string>
#include <vector>
#include "paddle/fluid/lite/core/kernel.h"
#include "paddle/fluid/lite/core/op_lite.h"
namespace paddle {
namespace lite {
namespace mir {
// Node in a MIR graph.
class Node {
public:
std::list<Node*> inlinks;
std::list<Node*> outlinks;
Node() = default;
enum class Role {
kUnk = -1,
kArgument,
kInstruct,
kNumRoles /*should be last*/
};
struct Instruct {
std::string op_type;
Place place;
// The kernel instances this Instruct contains.
std::vector<std::unique_ptr<KernelBase>> valid_kernels;
std::shared_ptr<OpInfo> op_info;
// TODO(Superjomn) make this a shared_ptr for resource safety.
std::shared_ptr<OpLite> op; // we hold op to run InferShape
};
struct Argument {
std::string name;
Place place;
// Weight is a special kind of argument, it is marked as weight explicitly
// so that some weight related optimization can take place.
bool is_weight{false};
};
Argument& AsArgument(const std::string& name) {
auto& x = AsArgument();
x.name = name;
return x;
}
Instruct& AsInstruct(const std::string& op_type,
std::vector<std::unique_ptr<KernelBase>>&& kernels,
const std::shared_ptr<OpLite>& op,
const std::shared_ptr<lite::OpInfo>& op_info) {
auto& x = AsInstruct();
x.op_type = op_type;
x.op = op;
x.valid_kernels = std::move(kernels);
x.op_info = op_info;
return x;
}
// Set roles.
Argument& AsArgument() {
if (role_ != Role::kUnk) {
CHECK(role_ == Role::kArgument);
return *argument_;
}
role_ = Role::kArgument;
argument_.reset(new Argument);
return *argument_;
}
Instruct& AsInstruct() {
if (role_ != Role::kUnk) {
CHECK(role_ == Role::kInstruct);
return *instruct_;
}
role_ = Role::kInstruct;
instruct_.reset(new Instruct);
return *instruct_;
}
// Check roles.
bool IsRoleSet() const { return role_ == Role::kUnk; }
bool IsInstruct() const { return role_ == Role::kInstruct; }
bool IsArgument() const { return role_ == Role::kArgument; }
private:
// Either instruct_ or argument_ is used.
std::unique_ptr<Instruct> instruct_;
std::unique_ptr<Argument> argument_;
Role role_{Role::kUnk};
};
} // namespace mir
} // namespace lite
} // namespace paddle