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/*
* Copyright (c) 2022 Arm Limited.
*
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef SRC_DYNAMIC_FUSION_SKETCH_GPU_GPUOPERATORGROUP
#define SRC_DYNAMIC_FUSION_SKETCH_GPU_GPUOPERATORGROUP
#include "arm_compute/core/ITensorInfo.h"
#include "src/dynamic_fusion/sketch/ArgumentPack.h"
#include "src/dynamic_fusion/sketch/gpu/GpuOperatorProperties.h"
#include "src/dynamic_fusion/sketch/utils/DependencyGraph.h"
#include <map>
namespace arm_compute
{
namespace experimental
{
namespace dynamic_fusion
{
using OperatorId = DependencyGraph::OperatorId;
/** An operator for the sole purpose of validating fusion
*/
class Operator
{
public:
/** Default constructor */
Operator() = default;
/** Get Operator Id */
OperatorId id() const;
/** Get operator type */
GpuOperatorType operator_type() const;
/** Get tensor arguments */
ArgumentPack<ITensorInfo> tensors() const;
friend class GpuOperatorGroup;
private:
Operator(OperatorId id, GpuOperatorType operator_type, const ArgumentPack<ITensorInfo> &tensors);
OperatorId _id{};
GpuOperatorType _operator_type{};
ArgumentPack<ITensorInfo> _tensors{};
};
/** A linear sequence of operators to be fused in a workload
* For the time being, this class is only used for validating operator fusion
* INVARIANTS:
* @note These invariants are exactly the same as operator fusion constraints
* 1. Fusion is limited to a linear sequence of operators
* 2. Max number of operators that can be fused is @ref GpuOperatorGroup::max_fused_operators
* 3. The fusion is subject to the pattern: Complex + Simple * | Simple + Simple * | Un-fusable
* 4. All operator but unfusable, have exactly 1 dst tensor
* 5. All fused operators share the same dst tensor shape
* 6. All fused operators' tensors share the same @ref DataLayout
*/
class GpuOperatorGroup
{
public:
static constexpr size_t max_fused_operators = 32;
/** Try adding (without actually adding) an operator to the group
*
* @param[in] op Operator to be added
* @param[in] is_output Whether this operator is the output operator.
*
* @return true If @p op can be added while maintaining the invariants
* @return false Otherwise
*/
bool try_add_operator(const Operator &op, bool is_output = false) const;
/** Add an operator to the group
*
* @param[in] op Operator to be added
* @param[in] is_output Whether this operator is the output operator.
*/
void add_operator(const Operator &op, bool is_output = false);
/** Create a new operator
*
* @param[in] operator_type @ref GpuOperatorType of the new operator
* @param[in] tensors Tensor arguments to the new operator
*
* @return Operator
*/
Operator new_operator(const GpuOperatorType &operator_type, const ArgumentPack<ITensorInfo> &tensors) const;
/** Get the "root operator" of the group, which is the first operator in a linear sequence
* @return const Operator* Pointer to the root operator
*/
const Operator *get_root_operator() const;
private:
DependencyGraph _graph{};
std::map<OperatorId, Operator> _operators{};
};
} // namespace dynamic_fusion
} // namespace experimental
} // namespace arm_compute
#endif /* SRC_DYNAMIC_FUSION_SKETCH_GPU_GPUOPERATORGROUP */
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