chromium/third_party/gemmlowp/src/internal/single_thread_gemm.h

// Copyright 2015 The Gemmlowp 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.

// single_thread_gemm.h: Single-threaded GEMM implementation.
// This is a good place to start reading code, as it shows the overall
// structure of a GEMM and is much simpler than multi_thread_gemm.h.

#ifndef GEMMLOWP_INTERNAL_SINGLE_THREAD_GEMM_H_
#define GEMMLOWP_INTERNAL_SINGLE_THREAD_GEMM_H_

#include <cassert>

#include "../public/map.h"
#include "allocator.h"
#include "compute.h"
#include "kernel.h"
#include "pack.h"
#include "unpack.h"

#ifdef GEMMLOWP_PROFILING_SIZES
#ifndef GEMMLOWP_PROFILING
#error GEMMLOWP_PROFILING_SIZES without GEMMLOWP_PROFILING
#endif
#include <string>
#include <unordered_map>
#endif

namespace gemmlowp {

class SingleThreadGemmContext { … };

template <typename KernelFormat, typename InputScalar, typename OutputScalar,
          typename BitDepthParams, MapOrder LhsOrder, MapOrder RhsOrder,
          MapOrder ResultOrder, typename LhsOffset, typename RhsOffset,
          typename OutputPipelineType>
void SingleThreadGemm(SingleThreadGemmContext* context,
                      const KernelBase& kernel,
                      const MatrixMap<const InputScalar, LhsOrder>& lhs,
                      const MatrixMap<const InputScalar, RhsOrder>& rhs,
                      MatrixMap<OutputScalar, ResultOrder>* result,
                      const LhsOffset& lhs_offset, const RhsOffset& rhs_offset,
                      const OutputPipelineType& output_pipeline) { … }

}  // namespace gemmlowp

#endif  // GEMMLOWP_INTERNAL_SINGLE_THREAD_GEMM_H_