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/*
* Copyright (c) 2020 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.
*/
#ifndef __ONERT_COMPILER_STATIC_SHAPE_INFERER_H__
#define __ONERT_COMPILER_STATIC_SHAPE_INFERER_H__
#include "ir/OperationVisitor.h"
#include "compiler/LoweredGraph.h"
#include "ir/Index.h"
#include <memory>
#include <unordered_map>
namespace onert
{
namespace compiler
{
/**
* @brief Class that observe and update operands.
*/
class OperandObserver
{
public:
/**
* @brief Constructor of OperandObserver
*
* @param operands Operands to be updated
*/
OperandObserver(const std::vector<ir::Operand *> &operands) : _operands{operands} {}
/**
* @brief Destructor of OperandObserver
*/
virtual ~OperandObserver() = default;
public:
/**
* @brief Update Shape and some OperandInfo of operands
*
* @param operands Operands to be updated
* @param unpredictable Whether runtime can predict shapes of operands in compilation time
*/
void updateShapes(const std::vector<ir::OperandInfo> &changed_operands_info,
bool unpredictable = false);
private:
std::vector<ir::Operand *> _operands;
};
/**
* @brief Class to infer shape before running kernels. It does the following:
* - re-calculate and set output shape at compile time (before running kernels)
* - if calculation cannot be done at compile time, mark the outputs to be dynamic, meaning
* shapes of outputs will be calculated during running kernels
*/
class StaticShapeInferer : public ir::OperationVisitor
{
public:
StaticShapeInferer(compiler::LoweredGraph *lowered_subg)
: _lowered_subg{lowered_subg}, _subg_input_observers{}, _controlflow_output_observer{nullptr},
_child_inferers{}
{
}
virtual ~StaticShapeInferer() = default;
public:
void appendSubgInputObserver(const ir::SubgraphIndex &subg_idx,
std::unique_ptr<OperandObserver> &&subg_input_observer) noexcept
{
_subg_input_observers[subg_idx] = std::move(subg_input_observer);
}
void setControlflowOutputObserver(std::unique_ptr<OperandObserver> &&output_observer) noexcept
{
_controlflow_output_observer = std::move(output_observer);
}
void appendChildInferer(const ir::SubgraphIndex &subg_idx, compiler::StaticShapeInferer *inferer)
{
_child_inferers[subg_idx] = inferer;
}
/**
* @brief Infer shape of operands belonging to ops and set the output shape.
* If output shape cannot be known without running op, mark it so that it can be allocated
* when running kernel.
*/
void infer(void);
void dump();
/**
* @brief Create a lowered model shape inferer map
* @param[in] lowered_subgs lowered model subgraph map
* @return Shape inferer map
*/
static std::unordered_map<ir::SubgraphIndex, std::unique_ptr<StaticShapeInferer>>
createStaticShapeInferers(
const std::unordered_map<ir::SubgraphIndex, std::unique_ptr<LoweredGraph>> &lowered_subgs);
private:
bool checkDynamicInput(const ir::Operation &op);
bool checkDynamicOutput(const ir::Operation &op);
void setDynamicOutput(const ir::Operation &op);
private:
// TODO Define visitors for operations. List them in alphabetic order.
void visit(const ir::operation::ArgMinMax &op) override;
void visit(const ir::operation::BatchMatMul &op) override;
void visit(const ir::operation::BCQFullyConnected &op) override;
void visit(const ir::operation::BCQGather &op) override;
void visit(const ir::operation::BinaryArithmetic &op) override;
void visit(const ir::operation::BroadcastTo &op) override;
void visit(const ir::operation::Comparison &op) override;
void visit(const ir::operation::Concat &op) override;
void visit(const ir::operation::Conv2D &op) override;
void visit(const ir::operation::ElementwiseActivation &op) override;
void visit(const ir::operation::ElementwiseBinary &op) override;
void visit(const ir::operation::ElementwiseUnary &op) override;
void visit(const ir::operation::ExpandDims &op) override;
void visit(const ir::operation::Fill &op) override;
void visit(const ir::operation::FullyConnected &op) override;
void visit(const ir::operation::FusedBatchNorm &op) override;
void visit(const ir::operation::Gather &op) override;
void visit(const ir::operation::If &op) override;
void visit(const ir::operation::L2Normalization &op) override;
void visit(const ir::operation::LSTM &op) override;
void visit(const ir::operation::MatrixBandPart &op) override;
void visit(const ir::operation::OneHot &op) override;
void visit(const ir::operation::Pack &op) override;
void visit(const ir::operation::Pad &op) override;
void visit(const ir::operation::Permute &op) override;
void visit(const ir::operation::Pow &op) override;
void visit(const ir::operation::Range &op) override;
void visit(const ir::operation::Reduce &op) override;
void visit(const ir::operation::Reshape &op) override;
void visit(const ir::operation::ResizeBilinear &op) override;
void visit(const ir::operation::Reverse &op) override;
void visit(const ir::operation::Select &op) override;
void visit(const ir::operation::Shape &op) override;
void visit(const ir::operation::Slice &op) override;
void visit(const ir::operation::Softmax &op) override;
void visit(const ir::operation::SpaceToBatchND &op) override;
void visit(const ir::operation::Split &op) override;
void visit(const ir::operation::Squeeze &op) override;
void visit(const ir::operation::StridedSlice &op) override;
void visit(const ir::operation::SquaredDifference &op) override;
void visit(const ir::operation::Tile &op) override;
void visit(const ir::operation::Transpose &op) override;
void visit(const ir::operation::Unpack &op) override;
void visit(const ir::operation::While &op) override;
void visit(const ir::operation::DetectionPostProcess &op) override;
void visit(const ir::operation::Bulk &op) override;
private:
/**
* @brief Performs shape inference for arithmetic operation
*/
void handleBinaryArithmeticOp(const ir::Operation &op, const ir::OperandIndex lhs_idx,
const ir::OperandIndex rhs_idx);
/**
* @brief Performs shape inference for unary op whose output shape is
* always same with input shape
*/
void handleSimpleUnaryOp(const ir::Operation &op, const ir::OperandIndex input_idx);
private:
compiler::LoweredGraph *_lowered_subg;
std::unordered_map<ir::SubgraphIndex, std::unique_ptr<OperandObserver>>
_subg_input_observers; // child subg input
std::unique_ptr<OperandObserver> _controlflow_output_observer; // parent controlflow op output
std::unordered_map<ir::SubgraphIndex, compiler::StaticShapeInferer *> _child_inferers;
};
} // namespace compiler
} // namespace onert
#endif // __ONERT_COMPILER_STATIC_SHAPE_INFERER_H__
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