Add kernels benchmark against eigen

WORKSPACE

@@ -9,7 +9,7 @@ http_archive(
     strip_prefix = "protobuf-3.4.0",
     urls = [
         "https://cnbj1.fds.api.xiaomi.com/mace/third-party/protobuf/protobuf-3.4.0.zip",
-        "https://github.com/google/protobuf/archive/v3.4.0.zip"
+        "https://github.com/google/protobuf/archive/v3.4.0.zip",
     ],
 )
 
@@ -20,7 +20,7 @@ new_http_archive(
     strip_prefix = "googletest-release-1.8.0",
     urls = [
         "https://cnbj1.fds.api.xiaomi.com/mace/third-party/googletest/googletest-release-1.8.0.zip",
-        "https://github.com/google/googletest/archive/release-1.8.0.zip"
+        "https://github.com/google/googletest/archive/release-1.8.0.zip",
     ],
 )
 
@@ -31,7 +31,7 @@ new_http_archive(
     strip_prefix = "OpenCL-Headers-master",
     urls = [
         "https://cnbj1.fds.api.xiaomi.com/mace/third-party/OpenCL-Headers/OpenCL-Headers-master.zip",
-        "https://github.com/KhronosGroup/OpenCL-Headers/archive/master.zip"
+        "https://github.com/KhronosGroup/OpenCL-Headers/archive/master.zip",
     ],
 )
 
@@ -42,7 +42,7 @@ new_http_archive(
     strip_prefix = "OpenCL-CLHPP-4c6f7d56271727e37fb19a9b47649dd175df2b12",
     urls = [
         "https://cnbj1.fds.api.xiaomi.com/mace/third-party/OpenCL-CLHPP/OpenCL-CLHPP-4c6f7d56271727e37fb19a9b47649dd175df2b12.zip",
-        "https://github.com/KhronosGroup/OpenCL-CLHPP/archive/4c6f7d56271727e37fb19a9b47649dd175df2b12.zip"
+        "https://github.com/KhronosGroup/OpenCL-CLHPP/archive/4c6f7d56271727e37fb19a9b47649dd175df2b12.zip",
     ],
 )
 
@@ -53,7 +53,29 @@ new_http_archive(
     strip_prefix = "half-code-356-trunk",
     urls = [
         "https://cnbj1.fds.api.xiaomi.com/mace/third-party/half/half-code-356-trunk.zip",
-        "https://sourceforge.net/code-snapshots/svn/h/ha/half/code/half-code-356-trunk.zip"
+        "https://sourceforge.net/code-snapshots/svn/h/ha/half/code/half-code-356-trunk.zip",
+    ],
+)
+
+new_http_archive(
+    name = "eigen",
+    build_file = "third_party/eigen3/eigen.BUILD",
+    sha256 = "ca7beac153d4059c02c8fc59816c82d54ea47fe58365e8aded4082ded0b820c4",
+    strip_prefix = "eigen-eigen-f3a22f35b044",
+    urls = [
+        "http://cnbj1.fds.api.xiaomi.com/mace/third-party/eigen/f3a22f35b044.tar.gz",
+        "http://mirror.bazel.build/bitbucket.org/eigen/eigen/get/f3a22f35b044.tar.gz",
+        "https://bitbucket.org/eigen/eigen/get/f3a22f35b044.tar.gz",
+    ],
+)
+
+http_archive(
+    name = "gemmlowp",
+    sha256 = "b87faa7294dfcc5d678f22a59d2c01ca94ea1e2a3b488c38a95a67889ed0a658",
+    strip_prefix = "gemmlowp-38ebac7b059e84692f53e5938f97a9943c120d98",
+    urls = [
+        "http://cnbj1.fds.api.xiaomi.com/mace/third-party/gemmlowp/38ebac7b059e84692f53e5938f97a9943c120d98.zip",
+        "https://github.com/google/gemmlowp/archive/38ebac7b059e84692f53e5938f97a9943c120d98.zip",
     ],
 )
 
@@ -81,7 +103,7 @@ http_archive(
     strip_prefix = "gflags-30dbc81fb5ffdc98ea9b14b1918bfe4e8779b26e",
     urls = [
         "https://cnbj1.fds.api.xiaomi.com/mace/third-party/gflags/gflags-30dbc81fb5ffdc98ea9b14b1918bfe4e8779b26e.zip",
-        "https://github.com/gflags/gflags/archive/30dbc81fb5ffdc98ea9b14b1918bfe4e8779b26e.zip"
+        "https://github.com/gflags/gflags/archive/30dbc81fb5ffdc98ea9b14b1918bfe4e8779b26e.zip",
     ],
 )
 

mace/kernels/BUILD

@@ -18,14 +18,17 @@ cc_library(
         ],
         exclude = [
             "*_test.cc",
+            "*_benchmark.cc",
             "arm/*_test.cc",
         ],
-    ) + if_android(glob([
+    ) + if_android(glob(
+        [
             "opencl/*.cc",
         ],
         exclude = [
             "opencl/*_test.cc",
-        ])),
+        ],
+    )),
     hdrs = glob(
         [
             "*.h",
@@ -35,16 +38,26 @@ cc_library(
             "buffer_to_image.h",
         ],
     ) + if_android(glob([
-            "opencl/*.h",
-            "buffer_to_image.h",
-        ])),
-    copts = ["-Werror", "-Wextra", "-Wno-missing-field-initializers"] +
-      if_openmp_enabled(["-fopenmp"]) +
-      if_neon_enabled(["-DMACE_ENABLE_NEON"]) +
-      if_android_armv7(["-mfpu=neon"]) +
-      if_android_armv7(["-mfloat-abi=softfp"]) +
-      if_android(["-DMACE_ENABLE_OPENCL"]) +
-      if_hexagon_enabled(["-DMACE_ENABLE_HEXAGON"]),
+        "opencl/*.h",
+        "buffer_to_image.h",
+    ])),
+    copts = [
+        "-Werror",
+        "-Wextra",
+        "-Wno-missing-field-initializers",
+    ] + if_openmp_enabled([
+        "-fopenmp",
+    ]) + if_neon_enabled([
+        "-DMACE_ENABLE_NEON",
+    ]) + if_android_armv7([
+        "-mfpu=neon",
+    ]) + if_android_armv7([
+        "-mfloat-abi=softfp",
+    ]) + if_android([
+        "-DMACE_ENABLE_OPENCL",
+    ]) + if_hexagon_enabled([
+        "-DMACE_ENABLE_HEXAGON",
+    ]),
     linkopts = if_android(["-lm"]),
     deps = [
         "//mace/core",
@@ -62,13 +75,22 @@ cc_test(
             "opencl/*_test.cc",
         ],
     ),
-    copts = ["-Werror", "-Wextra", "-Wno-missing-field-initializers"] +
-      if_openmp_enabled(["-fopenmp"]) +
-      if_neon_enabled(["-DMACE_ENABLE_NEON"]) +
-      if_android_armv7(["-mfpu=neon"]) +
-      if_android_armv7(["-mfloat-abi=softfp"]) +
-      if_android(["-DMACE_ENABLE_OPENCL"]) +
-      if_hexagon_enabled(["-DMACE_ENABLE_HEXAGON"]),
+    copts = [
+        "-Werror",
+        "-Wextra",
+        "-Wno-missing-field-initializers",
+    ] + if_openmp_enabled([
+        "-fopenmp",
+    ]) + if_neon_enabled([
+        "-DMACE_ENABLE_NEON",
+    ]) + if_android_armv7([
+        "-mfpu=neon",
+        "-mfloat-abi=softfp",
+    ]) + if_android([
+        "-DMACE_ENABLE_OPENCL",
+    ]) + if_hexagon_enabled([
+        "-DMACE_ENABLE_HEXAGON",
+    ]),
     linkopts = ["-fopenmp"],
     linkstatic = 1,
     deps = [
@@ -77,3 +99,32 @@ cc_test(
         "@gtest//:gtest_main",
     ],
 )
+
+cc_test(
+    name = "kernels_benchmark",
+    testonly = 1,
+    srcs = glob(["*_benchmark.cc"]),
+    copts = [
+        "-Werror",
+        "-Wextra",
+        "-Wno-missing-field-initializers",
+    ] + if_openmp_enabled([
+        "-fopenmp",
+    ]) + if_neon_enabled([
+        "-DMACE_ENABLE_NEON",
+    ]) + if_android_armv7([
+        "-mfpu=neon",
+        "-mfloat-abi=softfp",
+    ]) + if_android([
+        "-DMACE_ENABLE_OPENCL",
+    ]) + if_hexagon_enabled([
+        "-DMACE_ENABLE_HEXAGON",
+    ]),
+    linkopts = ["-fopenmp"],
+    linkstatic = 1,
+    deps = [
+        ":kernels",
+        "//mace/core:test_benchmark_main",
+        "//third_party/eigen3",
+    ],
+)

mace/kernels/matmul_benchmark.cc

+// Copyright 2018 Xiaomi, Inc.  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.
+
+#include <Eigen/Dense>
+#include <algorithm>
+#include <string>
+#include <vector>
+
+#include "mace/core/testing/test_benchmark.h"
+#include "mace/kernels/gemm.h"
+#include "public/gemmlowp.h"
+
+namespace mace {
+namespace kernels {
+namespace test {
+
+// Test the speed of different access order of a NHWC buffer
+
+namespace {
+
+// Matmul with (m, k) x (k, n)
+void MatmulBenchmark_Mace(int iters, int m, int k, int n) {
+  mace::testing::StopTiming();
+  std::vector<float> lhs(m * k);
+  std::vector<float> rhs(k * n);
+  std::vector<float> result(m * n);
+  // warm up
+  Gemm(lhs.data(), rhs.data(), 1, m, k, n, result.data());
+  mace::testing::StartTiming();
+  while (iters--) {
+    Gemm(lhs.data(), rhs.data(), 1, m, k, n, result.data());
+  }
+}
+
+void MatmulBenchmark_Eigen(int iters, int m, int k, int n) {
+  mace::testing::StopTiming();
+  Eigen::MatrixXd lhs = Eigen::MatrixXd::Random(m, k);
+  Eigen::MatrixXd rhs = Eigen::MatrixXd::Random(k, n);
+  Eigen::MatrixXd result = Eigen::MatrixXd::Zero(m, n);
+  // warm up
+  result = lhs * rhs;
+  mace::testing::StartTiming();
+  while (iters--) {
+    result = lhs * rhs;
+  }
+}
+
+}  // namespace
+
+#define MACE_BM_MATMUL_FUNC(M, K, N, FUNC)                         \
+  static void MACE_BM_MATMUL_##M##_##K##_##N##_##FUNC(int iters) { \
+    const int64_t macc = static_cast<int64_t>(iters) * M * K * N;  \
+    const int64_t tot = static_cast<int64_t>(iters) * (M + N) * K; \
+    mace::testing::MaccProcessed(macc);                            \
+    mace::testing::BytesProcessed(tot * sizeof(float));            \
+    MatmulBenchmark_##FUNC(iters, M, K, N);                        \
+  }                                                                \
+  MACE_BENCHMARK(MACE_BM_MATMUL_##M##_##K##_##N##_##FUNC)
+
+#define MACE_BM_MATMUL(M, K, N)        \
+  MACE_BM_MATMUL_FUNC(M, K, N, Mace);  \
+  MACE_BM_MATMUL_FUNC(M, K, N, Eigen);
+
+// Embedding size 384
+MACE_BM_MATMUL(7, 384, 384);
+MACE_BM_MATMUL(7, 384, 1536);
+MACE_BM_MATMUL(7, 1536, 384);
+
+MACE_BM_MATMUL(15, 384, 384);
+MACE_BM_MATMUL(15, 384, 1536);
+MACE_BM_MATMUL(15, 1536, 384);
+
+MACE_BM_MATMUL(1, 384, 384);
+MACE_BM_MATMUL(1, 384, 1536);
+MACE_BM_MATMUL(1, 1536, 384);
+MACE_BM_MATMUL(1, 384, 44678);
+
+// Embedding size 128
+MACE_BM_MATMUL(1, 128, 1536);
+MACE_BM_MATMUL(1, 128, 44678);
+
+}  // namespace test
+}  // namespace kernels
+}  // namespace mace

mace/kernels/memory_benchmark.cc

+// Copyright 2018 Xiaomi, Inc.  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.
+
+#include <algorithm>
+#include <string>
+#include <vector>
+
+#include "mace/core/testing/test_benchmark.h"
+
+namespace mace {
+namespace kernels {
+namespace test {
+
+// Test the speed of different access order of a NHWC buffer
+
+namespace {
+void MemoryAccessBenchmark_NHWC(
+    int iters, int batch, int height, int width, int channels) {
+  mace::testing::StopTiming();
+  std::vector<float> buffer(batch * height * width * channels);
+  std::fill_n(buffer.begin(), buffer.size(), 0.1);
+  mace::testing::StartTiming();
+
+  while (iters--) {
+    for (int n = 0; n < batch; ++n) {
+      for (int h = 0; h < height; ++h) {
+        for (int w = 0; w < width; ++w) {
+          for (int c = 0; c < channels; ++c) {
+            buffer[n * height * width * channels + h * width * channels +
+                   w * channels + c] = 1.0f;
+          }
+        }
+      }
+    }
+  }
+}
+
+void MemoryAccessBenchmark_NWCH(
+    int iters, int batch, int height, int width, int channels) {
+  mace::testing::StopTiming();
+  std::vector<float> buffer(batch * height * width * channels);
+  std::fill_n(buffer.begin(), buffer.size(), 0.1);
+  mace::testing::StartTiming();
+
+  while (iters--) {
+    for (int n = 0; n < batch; ++n) {
+      for (int w = 0; w < width; ++w) {
+        for (int c = 0; c < channels; ++c) {
+          for (int h = 0; h < height; ++h) {
+            buffer[n * height * width * channels + h * width * channels +
+                   w * channels + c] = 1.0f;
+          }
+        }
+      }
+    }
+  }
+}
+
+void MemoryAccessBenchmark_NHCW(
+    int iters, int batch, int height, int width, int channels) {
+  mace::testing::StopTiming();
+  std::vector<float> buffer(batch * height * width * channels);
+  std::fill_n(buffer.begin(), buffer.size(), 0.1);
+  mace::testing::StartTiming();
+
+  while (iters--) {
+    for (int n = 0; n < batch; ++n) {
+      for (int h = 0; h < height; ++h) {
+        for (int c = 0; c < channels; ++c) {
+          for (int w = 0; w < width; ++w) {
+            buffer[n * height * width * channels + h * width * channels +
+                   w * channels + c] = 1.0f;
+          }
+        }
+      }
+    }
+  }
+}
+
+}  // namespace
+
+#define MACE_BM_MEMORY_ACCESS(N, H, W, C, ORDER)                     \
+  static void MACE_BM_MEMORY_ACCESS_##N##_##H##_##W##_##C##_##ORDER( \
+      int iters) {                                                   \
+    const int64_t tot = static_cast<int64_t>(iters) * N * H * W * C; \
+    mace::testing::MaccProcessed(tot);                               \
+    mace::testing::BytesProcessed(tot * sizeof(float));              \
+    MemoryAccessBenchmark_##ORDER(iters, N, H, W, C);                \
+  }                                                                  \
+  MACE_BENCHMARK(MACE_BM_MEMORY_ACCESS_##N##_##H##_##W##_##C##_##ORDER)
+
+MACE_BM_MEMORY_ACCESS(10, 64, 64, 1024, NHWC);
+MACE_BM_MEMORY_ACCESS(10, 64, 64, 1024, NHCW);
+MACE_BM_MEMORY_ACCESS(10, 64, 64, 1024, NWCH);
+MACE_BM_MEMORY_ACCESS(10, 64, 1024, 64, NHCW);
+MACE_BM_MEMORY_ACCESS(10, 64, 1024, 64, NWCH);
+
+}  // namespace test
+}  // namespace kernels
+}  // namespace mace

third_party/eigen3/BUILD

+# Description:
+#   Eigen is a C++ template library for linear algebra: vectors,
+#   matrices, and related algorithms.
+# This file is mostly stolen from tensorflow.
+
+licenses([
+    # Note: Eigen is an MPL2 library that includes GPL v3 and LGPL v2.1+ code.
+    #       We've taken special care to not reference any restricted code.
+    "reciprocal",  # MPL2
+    "notice",  # Portions BSD
+])
+
+exports_files(["LICENSE"])
+
+cc_library(
+    name = "eigen3",
+    hdrs = glob(["unsupported/Eigen/CXX11/src/FixedPoint/*.h"]) + [
+        "Eigen/Core",
+        "Eigen/LU",
+        "Eigen/Cholesky",
+        "Eigen/Eigenvalues",
+        "Eigen/QR",
+        "Eigen/SVD",
+        "unsupported/Eigen/SpecialFunctions",
+        "unsupported/Eigen/CXX11/ThreadPool",
+        "unsupported/Eigen/CXX11/Tensor",
+        "unsupported/Eigen/CXX11/FixedPoint",
+    ],
+    visibility = ["//visibility:public"],
+    deps = [
+        "@eigen//:eigen",
+    ],
+)

third_party/eigen3/Eigen/Cholesky

+#include "Eigen/Cholesky"

third_party/eigen3/Eigen/Core

+#include "Eigen/Core"

third_party/eigen3/Eigen/Eigenvalues

+#include "Eigen/Eigenvalues"

third_party/eigen3/Eigen/LU

+#include "Eigen/LU"

third_party/eigen3/Eigen/QR

+#include "Eigen/QR"

third_party/eigen3/Eigen/SVD

+#include "Eigen/SVD"

third_party/eigen3/eigen.BUILD

+# Description:
+#   Eigen is a C++ template library for linear algebra: vectors,
+#   matrices, and related algorithms.
+# This file is mostly stolen from tensorflow.
+
+licenses([
+    # Note: Eigen is an MPL2 library that includes GPL v3 and LGPL v2.1+ code.
+    #       We've taken special care to not reference any restricted code.
+    "reciprocal",  # MPL2
+    "notice",  # Portions BSD
+])
+
+exports_files(["COPYING.MPL2"])
+
+# License-restricted (i.e. not reciprocal or notice) files inside Eigen/...
+EIGEN_RESTRICTED_FILES = [
+    "Eigen/src/OrderingMethods/Amd.h",
+    "Eigen/src/SparseCholesky/**",
+]
+
+# Notable transitive dependencies of restricted files inside Eigen/...
+EIGEN_RESTRICTED_DEPS = [
+    "Eigen/Eigen",
+    "Eigen/IterativeLinearSolvers",
+    "Eigen/MetisSupport",
+    "Eigen/Sparse",
+    "Eigen/SparseCholesky",
+    "Eigen/SparseLU",
+]
+
+# Note: unsupported/Eigen is unsupported and might go away at any time.
+EIGEN_FILES = [
+    "Eigen/**",
+    "unsupported/Eigen/CXX11/**",
+    "unsupported/Eigen/FFT",
+    "unsupported/Eigen/KroneckerProduct",
+    "unsupported/Eigen/src/FFT/**",
+    "unsupported/Eigen/src/KroneckerProduct/**",
+    "unsupported/Eigen/MatrixFunctions",
+    "unsupported/Eigen/SpecialFunctions",
+    "unsupported/Eigen/src/SpecialFunctions/**",
+]
+
+# List of files picked up by glob but actually part of another target.
+EIGEN_EXCLUDE_FILES = [
+    "Eigen/src/Core/arch/AVX/PacketMathGoogleTest.cc",
+]
+
+# Files known to be under MPL2 license.
+EIGEN_MPL2_HEADER_FILES = glob(
+    EIGEN_FILES,
+    exclude = EIGEN_EXCLUDE_FILES +
+              EIGEN_RESTRICTED_FILES +
+              EIGEN_RESTRICTED_DEPS + [
+        # Guarantees any file missed by excludes above will not compile.
+        "Eigen/src/Core/util/NonMPL2.h",
+        "Eigen/**/CMakeLists.txt",
+    ],
+)
+
+cc_library(
+    name = "eigen",
+    hdrs = EIGEN_MPL2_HEADER_FILES,
+    defines = [
+        # This define (mostly) guarantees we don't link any problematic
+        # code. We use it, but we do not rely on it, as evidenced above.
+        "EIGEN_MPL2_ONLY",
+    ],
+    includes = ["."],
+    visibility = ["//visibility:public"],
+)

third_party/eigen3/unsupported/Eigen/CXX11/Core

+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2013 Christian Seiler <christian@iwakd.de>
+// Copyright (C) 2014 Benoit Steiner <benoit.steiner.goog@gmail.com>
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_CXX11_CORE_MODULE
+#define EIGEN_CXX11_CORE_MODULE
+
+#include <Eigen/Core>
+
+#include <Eigen/src/Core/util/DisableStupidWarnings.h>
+
+/** \defgroup CXX11_Core_Module C++11 Core Module
+  *
+  * This module provides common core features for all modules that
+  * explicitly depend on C++11. Currently, this is only the Tensor
+  * module. Note that at this stage, you should not need to include
+  * this module directly.
+  *
+  * It also provides a limited fallback for compilers that don't support
+  * CXX11 yet, such as nvcc.
+  *
+  * \code
+  * #include <Eigen/CXX11/Core>
+  * \endcode
+  */
+
+// Only a subset of cxx11 is allowed at Google, so we default to emulate the
+// cxx11 functionality that we need.
+#include "src/Core/util/FixedSizeVector.h"
+#if 1
+#include <vector>
+#include "src/Core/util/EmulateCXX11Meta.h"
+#else
+#include "src/Core/util/CXX11Workarounds.h"
+#include "src/Core/util/CXX11Meta.h"
+#endif
+#include <Eigen/src/Core/util/ReenableStupidWarnings.h>
+
+#endif // EIGEN_CXX11_CORE_MODULE
+

third_party/eigen3/unsupported/Eigen/CXX11/FixedPoint

+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2015 Benoit Steiner <benoit.steiner.goog@gmail.com>
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_CXX11_FIXED_POINT_MODULE
+#define EIGEN_CXX11_FIXED_POINT_MODULE
+
+#include <Eigen/Core>
+#include <stdint.h>
+
+/** \defgroup CXX11_FixedPoint_Module Fixed Point Module
+  *
+  * This module provides common core features for all modules that
+  * explicitly depend on C++11. Currently, this is only the Tensor
+  * module. Note that at this stage, you should not need to include
+  * this module directly.
+  *
+  * It also provides a limited fallback for compilers that don't support
+  * CXX11 yet, such as nvcc.
+  *
+  * \code
+  * #include <Eigen/CXX11/FixedPoint>
+  * \endcode
+  */
+
+#include "src/FixedPoint/FixedPointTypes.h"
+
+// Use optimized implementations whenever available
+#if defined (EIGEN_VECTORIZE_AVX512DQ) || defined (EIGEN_VECTORIZE_AVX512BW)
+#include "src/FixedPoint/PacketMathAVX512.h"
+#include "src/FixedPoint/TypeCastingAVX512.h"
+
+#elif defined EIGEN_VECTORIZE_AVX2
+#define EIGEN_USE_OPTIMIZED_INT8_UINT8_MAT_MAT_PRODUCT
+#define EIGEN_USE_OPTIMIZED_INT16_INT16_MAT_MAT_PRODUCT
+#include "src/FixedPoint/PacketMathAVX2.h"
+#include "src/FixedPoint/MatMatProductAVX2.h"
+#include "src/FixedPoint/TypeCastingAVX2.h"
+
+#elif defined EIGEN_VECTORIZE_NEON
+#define EIGEN_USE_OPTIMIZED_INT8_UINT8_MAT_MAT_PRODUCT
+#include "src/FixedPoint/MatMatProductNEON.h"
+#endif
+
+// Use the default implementation when no optimized code is available
+#include "src/FixedPoint/MatMatProduct.h"
+#include "src/FixedPoint/MatVecProduct.h"
+
+
+#endif // EIGEN_CXX11_FIXED_POINT_MODULE

third_party/eigen3/unsupported/Eigen/CXX11/NeuralNetworks

+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2014 Benoit Steiner <benoit.steiner.goog@gmail.com>
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_CXX11_NEURAL_NETWORKS_MODULE
+#define EIGEN_CXX11_NEURAL_NETWORKS_MODULE
+
+#include "unsupported/Eigen/CXX11/Tensor"
+
+/** \defgroup CXX11_NeuralNetworks_Module Neural Networks Module
+  *
+  * This module provides an efficient implementation of the common primitives
+  * used by neural networks.
+  * The primitives are  built on top of the tensor library.
+  *
+  * \code
+  * #include <Eigen/CXX11/NeuralNetworks>
+  * \endcode
+  */
+
+#include "unsupported/Eigen/CXX11/src/NeuralNetworks/Activations.h"
+#include "unsupported/Eigen/CXX11/src/NeuralNetworks/Attention.h"
+#include "unsupported/Eigen/CXX11/src/NeuralNetworks/Pooling.h"
+#include "unsupported/Eigen/CXX11/src/NeuralNetworks/SoftMax.h"
+#include "unsupported/Eigen/CXX11/src/NeuralNetworks/BackwardCuboidConvolutions.h"
+#include "unsupported/Eigen/CXX11/src/NeuralNetworks/CuboidConvolution.h"
+#include "unsupported/Eigen/CXX11/src/NeuralNetworks/BackwardSpatialConvolutions.h"
+#include "unsupported/Eigen/CXX11/src/NeuralNetworks/SpatialConvolutions.h"
+
+#endif  // EIGEN_CXX11_NEURAL_NETWORKS_MODULE

third_party/eigen3/unsupported/Eigen/CXX11/Tensor

+#include "unsupported/Eigen/CXX11/Tensor"
+
+#ifdef _WIN32
+#ifndef SLEEP_FUNC_HEADER_GUARD
+#define SLEEP_FUNC_HEADER_GUARD
+inline void sleep(unsigned int seconds) { Sleep(1000*seconds); }
+#endif
+
+// On Windows, Eigen will include Windows.h, which defines various
+// macros that conflict with TensorFlow symbols. Undefine them here to
+// prevent clashes.
+#undef DeleteFile
+#undef ERROR
+#undef LoadLibrary
+#endif  // _WIN32

third_party/eigen3/unsupported/Eigen/CXX11/ThreadPool

+#include "unsupported/Eigen/CXX11/ThreadPool"

third_party/eigen3/unsupported/Eigen/CXX11/src/FixedPoint/FixedPointTypes.h

+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2015 Benoit Steiner <benoit.steiner.goog@gmail.com>
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_CXX11_FIXED_POINT_TYPES_H
+#define EIGEN_CXX11_FIXED_POINT_TYPES_H
+
+#include <cmath>
+#include <iostream>
+
+namespace Eigen {
+
+// The mantissa part of the fixed point representation. See
+// go/tensorfixedpoint for details
+struct QInt8;
+struct QUInt8;
+struct QInt16;
+struct QUInt16;
+struct QInt32;
+
+template <>
+struct NumTraits<QInt8> : GenericNumTraits<int8_t> {};
+template <>
+struct NumTraits<QUInt8> : GenericNumTraits<uint8_t> {};
+template <>
+struct NumTraits<QInt16> : GenericNumTraits<int16_t> {};
+template <>
+struct NumTraits<QUInt16> : GenericNumTraits<uint16_t> {};
+template <>
+struct NumTraits<QInt32> : GenericNumTraits<int32_t> {};
+
+namespace internal {
+template <>
+struct scalar_product_traits<QInt32, double> {
+  enum {
+    // Cost = NumTraits<T>::MulCost,
+    Defined = 1
+  };
+  typedef QInt32 ReturnType;
+};
+}
+
+// Wrap the 8bit int into a QInt8 struct instead of using a typedef to prevent
+// the compiler from silently type cast the mantissa into a bigger or a smaller
+// representation.
+struct QInt8 {
+  QInt8() {}
+  QInt8(const int8_t v) : value(v) {}
+  QInt8(const QInt32 v);
+
+  operator int() const { return static_cast<int>(value); }
+
+  int8_t value;
+};
+
+struct QUInt8 {
+  QUInt8() {}
+  QUInt8(const uint8_t v) : value(v) {}
+  QUInt8(const QInt32 v);
+
+  operator int() const { return static_cast<int>(value); }
+
+  uint8_t value;
+};
+
+struct QInt16 {
+  QInt16() {}
+  QInt16(const int16_t v) : value(v) {}
+  QInt16(const QInt32 v);
+  operator int() const { return static_cast<int>(value); }
+
+  int16_t value;
+};
+
+struct QUInt16 {
+  QUInt16() {}
+  QUInt16(const uint16_t v) : value(v) {}
+  QUInt16(const QInt32 v);
+  operator int() const { return static_cast<int>(value); }
+
+  uint16_t value;
+};
+
+struct QInt32 {
+  QInt32() {}
+  QInt32(const int8_t v) : value(v) {}
+  QInt32(const int32_t v) : value(v) {}
+  QInt32(const uint32_t v) : value(static_cast<int32_t>(v)) {}
+  QInt32(const QInt8 v) : value(v.value) {}
+  QInt32(const float v) : value(static_cast<int32_t>(lrint(v))) {}
+#ifdef EIGEN_MAKING_DOCS
+  // Workaround to fix build on PPC.
+  QInt32(unsigned long v) : value(v) {}
+#endif
+
+  operator float() const { return static_cast<float>(value); }
+
+  int32_t value;
+};
+
+EIGEN_STRONG_INLINE QInt8::QInt8(const QInt32 v)
+    : value(v.value > 127 ? 127 : (v.value < -128 ? -128 : v.value)) {}
+EIGEN_STRONG_INLINE QUInt8::QUInt8(const QInt32 v)
+    : value(v.value > 255 ? 255 : (v.value < 0 ? 0 : v.value)) {}
+EIGEN_STRONG_INLINE QInt16::QInt16(const QInt32 v)
+    : value(v.value > 32767 ? 32767 : (v.value < -32768 ? -32768 : v.value)) {}
+EIGEN_STRONG_INLINE QUInt16::QUInt16(const QInt32 v)
+    : value(v.value > 65535 ? 65535 : (v.value < 0 ? 0 : v.value)) {}
+
+// Basic widening 8-bit operations: This will be vectorized in future CLs.
+EIGEN_STRONG_INLINE QInt32 operator*(const QInt8 a, const QInt8 b) {
+  return QInt32(static_cast<int32_t>(a.value) * static_cast<int32_t>(b.value));
+}
+EIGEN_STRONG_INLINE QInt32 operator*(const QInt8 a, const QUInt8 b) {
+  return QInt32(static_cast<int32_t>(a.value) * static_cast<int32_t>(b.value));
+}
+EIGEN_STRONG_INLINE QInt32 operator+(const QInt8 a, const QInt8 b) {
+  return QInt32(static_cast<int32_t>(a.value) + static_cast<int32_t>(b.value));
+}
+EIGEN_STRONG_INLINE QInt32 operator-(const QInt8 a, const QInt8 b) {
+  return QInt32(static_cast<int32_t>(a.value) - static_cast<int32_t>(b.value));
+}
+
+// Basic widening 16-bit operations: This will be vectorized in future CLs.
+EIGEN_STRONG_INLINE QInt32 operator*(const QInt16 a, const QInt16 b) {
+  return QInt32(static_cast<int32_t>(a.value) * static_cast<int32_t>(b.value));
+}
+EIGEN_STRONG_INLINE QInt32 operator*(const QInt16 a, const QUInt16 b) {
+  return QInt32(static_cast<int32_t>(a.value) * static_cast<int32_t>(b.value));
+}
+EIGEN_STRONG_INLINE QInt32 operator+(const QInt16 a, const QInt16 b) {
+  return QInt32(static_cast<int32_t>(a.value) + static_cast<int32_t>(b.value));
+}
+EIGEN_STRONG_INLINE QInt32 operator-(const QInt16 a, const QInt16 b) {
+  return QInt32(static_cast<int32_t>(a.value) - static_cast<int32_t>(b.value));
+}
+
+// Mixed QInt32 op QInt8 operations. This will be vectorized in future CLs.
+EIGEN_STRONG_INLINE QInt32 operator+(const QInt32 a, const QInt8 b) {
+  return QInt32(a.value + static_cast<int32_t>(b.value));
+}
+EIGEN_STRONG_INLINE QInt32 operator+(const QInt8 a, const QInt32 b) {
+  return QInt32(static_cast<int32_t>(a.value) + b.value);
+}
+EIGEN_STRONG_INLINE QInt32 operator-(const QInt32 a, const QInt8 b) {
+  return QInt32(a.value - static_cast<int32_t>(b.value));
+}
+EIGEN_STRONG_INLINE QInt32 operator-(const QInt8 a, const QInt32 b) {
+  return QInt32(static_cast<int32_t>(a.value) - b.value);
+}
+EIGEN_STRONG_INLINE QInt32 operator*(const QInt32 a, const QInt8 b) {
+  return QInt32(a.value * static_cast<int32_t>(b.value));
+}
+EIGEN_STRONG_INLINE QInt32 operator*(const QInt8 a, const QInt32 b) {
+  return QInt32(static_cast<int32_t>(a.value) * b.value);
+}
+
+// Mixed QInt32 op QInt16 operations. This will be vectorized in future CLs.
+EIGEN_STRONG_INLINE QInt32 operator+(const QInt32 a, const QInt16 b) {
+  return QInt32(a.value + static_cast<int32_t>(b.value));
+}
+EIGEN_STRONG_INLINE QInt32 operator+(const QInt16 a, const QInt32 b) {
+  return QInt32(static_cast<int32_t>(a.value) + b.value);
+}
+EIGEN_STRONG_INLINE QInt32 operator-(const QInt32 a, const QInt16 b) {
+  return QInt32(a.value - static_cast<int32_t>(b.value));
+}
+EIGEN_STRONG_INLINE QInt32 operator-(const QInt16 a, const QInt32 b) {
+  return QInt32(static_cast<int32_t>(a.value) - b.value);
+}
+EIGEN_STRONG_INLINE QInt32 operator*(const QInt32 a, const QInt16 b) {
+  return QInt32(a.value * static_cast<int32_t>(b.value));
+}
+EIGEN_STRONG_INLINE QInt32 operator*(const QInt16 a, const QInt32 b) {
+  return QInt32(static_cast<int32_t>(a.value) * b.value);
+}
+
+// Mixed QInt32 op QUInt8 operations. This will be vectorized in future CLs.
+EIGEN_STRONG_INLINE QInt32 operator+(const QInt32 a, const QUInt8 b) {
+  return QInt32(a.value + static_cast<int32_t>(b.value));
+}
+EIGEN_STRONG_INLINE QInt32 operator+(const QUInt8 a, const QInt32 b) {
+  return QInt32(static_cast<int32_t>(a.value) + b.value);
+}
+EIGEN_STRONG_INLINE QInt32 operator-(const QInt32 a, const QUInt8 b) {
+  return QInt32(a.value - static_cast<int32_t>(b.value));
+}
+EIGEN_STRONG_INLINE QInt32 operator-(const QUInt8 a, const QInt32 b) {
+  return QInt32(static_cast<int32_t>(a.value) - b.value);
+}
+EIGEN_STRONG_INLINE QInt32 operator*(const QInt32 a, const QUInt8 b) {
+  return QInt32(a.value * static_cast<int32_t>(b.value));
+}
+EIGEN_STRONG_INLINE QInt32 operator*(const QUInt8 a, const QInt32 b) {
+  return QInt32(static_cast<int32_t>(a.value) * b.value);
+}
+
+// Mixed QInt32 op QUInt16 operations. This will be vectorized in future CLs.
+EIGEN_STRONG_INLINE QInt32 operator+(const QInt32 a, const QUInt16 b) {
+  return QInt32(a.value + static_cast<int32_t>(b.value));
+}
+EIGEN_STRONG_INLINE QInt32 operator+(const QUInt16 a, const QInt32 b) {
+  return QInt32(static_cast<int32_t>(a.value) + b.value);
+}
+EIGEN_STRONG_INLINE QInt32 operator-(const QInt32 a, const QUInt16 b) {
+  return QInt32(a.value - static_cast<int32_t>(b.value));
+}
+EIGEN_STRONG_INLINE QInt32 operator-(const QUInt16 a, const QInt32 b) {
+  return QInt32(static_cast<int32_t>(a.value) - b.value);
+}
+EIGEN_STRONG_INLINE QInt32 operator*(const QInt32 a, const QUInt16 b) {
+  return QInt32(a.value * static_cast<int32_t>(b.value));
+}
+EIGEN_STRONG_INLINE QInt32 operator*(const QUInt16 a, const QInt32 b) {
+  return QInt32(static_cast<int32_t>(a.value) * b.value);
+}
+
+// Basic arithmetic operations on QInt32, which behaves like a int32_t.
+EIGEN_STRONG_INLINE QInt32 operator+(const QInt32 a, const QInt32 b) {
+  return a.value + b.value;
+}
+EIGEN_STRONG_INLINE QInt32 operator-(const QInt32 a, const QInt32 b) {
+  return a.value - b.value;
+}
+EIGEN_STRONG_INLINE QInt32 operator*(const QInt32 a, const QInt32 b) {
+  return a.value * b.value;
+}
+EIGEN_STRONG_INLINE QInt32 operator/(const QInt32 a, const QInt32 b) {
+  return a.value / b.value;
+}
+EIGEN_STRONG_INLINE QInt32& operator+=(QInt32& a, const QInt32 b) {
+  a.value += b.value;
+  return a;
+}
+EIGEN_STRONG_INLINE QInt32& operator-=(QInt32& a, const QInt32 b) {
+  a.value -= b.value;
+  return a;
+}
+EIGEN_STRONG_INLINE QInt32& operator*=(QInt32& a, const QInt32 b) {
+  a.value *= b.value;
+  return a;
+}
+EIGEN_STRONG_INLINE QInt32& operator/=(QInt32& a, const QInt32 b) {
+  a.value /= b.value;
+  return a;
+}
+EIGEN_STRONG_INLINE QInt32 operator-(const QInt32 a) {
+  return -a.value;
+}
+
+// Scaling QInt32 by double. We do the arithmetic in double because
+// float only has 23 bits of mantissa, so casting QInt32 to float might reduce
+// accuracy by discarding up to 7 (least significant) bits.
+EIGEN_STRONG_INLINE QInt32 operator*(const QInt32 a, const double b) {
+  return static_cast<int32_t>(lrint(static_cast<double>(a.value) * b));
+}
+EIGEN_STRONG_INLINE QInt32 operator*(const double a, const QInt32 b) {
+  return static_cast<int32_t>(lrint(a * static_cast<double>(b.value)));
+}
+EIGEN_STRONG_INLINE QInt32& operator*=(QInt32& a, const double b) {
+  a.value = static_cast<int32_t>(lrint(static_cast<double>(a.value) * b));
+  return a;
+}
+
+// Comparisons
+EIGEN_STRONG_INLINE bool operator==(const QInt8 a, const QInt8 b) {
+  return a.value == b.value;
+}
+EIGEN_STRONG_INLINE bool operator==(const QUInt8 a, const QUInt8 b) {
+  return a.value == b.value;
+}
+EIGEN_STRONG_INLINE bool operator==(const QInt16 a, const QInt16 b) {
+  return a.value == b.value;
+}
+EIGEN_STRONG_INLINE bool operator==(const QUInt16 a, const QUInt16 b) {
+  return a.value == b.value;
+}
+EIGEN_STRONG_INLINE bool operator==(const QInt32 a, const QInt32 b) {
+  return a.value == b.value;
+}
+
+EIGEN_STRONG_INLINE bool operator<(const QInt8 a, const QInt8 b) {
+  return a.value < b.value;
+}
+EIGEN_STRONG_INLINE bool operator<(const QUInt8 a, const QUInt8 b) {
+  return a.value < b.value;
+}
+EIGEN_STRONG_INLINE bool operator<(const QInt16 a, const QInt16 b) {
+  return a.value < b.value;
+}
+EIGEN_STRONG_INLINE bool operator<(const QUInt16 a, const QUInt16 b) {
+  return a.value < b.value;
+}
+EIGEN_STRONG_INLINE bool operator<(const QInt32 a, const QInt32 b) {
+  return a.value < b.value;
+}
+
+EIGEN_STRONG_INLINE bool operator>(const QInt8 a, const QInt8 b) {
+  return a.value > b.value;
+}
+EIGEN_STRONG_INLINE bool operator>(const QUInt8 a, const QUInt8 b) {
+  return a.value > b.value;
+}
+EIGEN_STRONG_INLINE bool operator>(const QInt16 a, const QInt16 b) {
+  return a.value > b.value;
+}
+EIGEN_STRONG_INLINE bool operator>(const QUInt16 a, const QUInt16 b) {
+  return a.value > b.value;
+}
+EIGEN_STRONG_INLINE bool operator>(const QInt32 a, const QInt32 b) {
+  return a.value > b.value;
+}
+
+EIGEN_STRONG_INLINE std::ostream& operator<<(std::ostream& os, QInt8 a) {
+  os << static_cast<int>(a.value);
+  return os;
+}
+EIGEN_STRONG_INLINE std::ostream& operator<<(std::ostream& os, QUInt8 a) {
+  os << static_cast<int>(a.value);
+  return os;
+}
+EIGEN_STRONG_INLINE std::ostream& operator<<(std::ostream& os, QInt16 a) {
+  os << static_cast<int>(a.value);
+  return os;
+}
+EIGEN_STRONG_INLINE std::ostream& operator<<(std::ostream& os, QUInt16 a) {
+  os << static_cast<int>(a.value);
+  return os;
+}
+EIGEN_STRONG_INLINE std::ostream& operator<<(std::ostream& os, QInt32 a) {
+  os << a.value;
+  return os;
+}
+
+}  // namespace Eigen
+
+#endif  // EIGEN_CXX11_FIXED_POINT_TYPES_H

third_party/eigen3/unsupported/Eigen/CXX11/src/FixedPoint/MatMatProduct.h

+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2015 Benoit Steiner <benoit.steiner.goog@gmail.com>
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_CXX11_FIXED_POINT_MAT_MAT_PRODUCT_H
+#define EIGEN_CXX11_FIXED_POINT_MAT_MAT_PRODUCT_H
+
+
+namespace Eigen {
+namespace internal {
+
+// Accumulate the product of 2 QInt8 inputs on 32 bits to prevent
+// overflows
+template<> struct scalar_product_traits<QInt8, QInt8>
+{
+  enum {
+    Defined = 1
+  };
+  typedef QInt32 ReturnType;
+};
+
+// Accumulate the product of QInt8 inputs with QUint8 inputs on 32 bits
+// to prevent overflows
+template<> struct scalar_product_traits<QInt8, QUInt8>
+{
+  enum {
+    Defined = 1
+  };
+  typedef QInt32 ReturnType;
+};
+
+// Description of the product implementation. It's pretty simple now since
+// nothing is vectorized yet.
+// This definition tackle the case where both lhs and rhs are encoded using
+// signed 8bit integers
+#ifndef EIGEN_USE_OPTIMIZED_INT8_INT8_MAT_MAT_PRODUCT
+
+template<bool _ConjLhs, bool _ConjRhs>
+class gebp_traits<QInt8, QInt8, _ConjLhs, _ConjRhs>
+{
+public:
+  typedef QInt8 LhsScalar;
+  typedef QInt8 RhsScalar;
+  typedef QInt32 ResScalar;
+
+  enum {
+    // register block size along the M and N directions
+    // One for the current implementation
+    nr = 1,
+    mr = 1,
+    // Progress made at each iteration of the product loop
+    // also 1 for the current implementation
+    LhsProgress = 1,
+    RhsProgress = 1
+  };
+};
+
+// The signed 8bit Mat-Mat product itself.
+template<typename Index, typename DataMapper, int mr, int nr, bool ConjugateLhs, bool ConjugateRhs>
+struct gebp_kernel<QInt8, QInt8, Index, DataMapper, mr, nr, ConjugateLhs, ConjugateRhs>
+{
+  EIGEN_DONT_INLINE
+  void operator()(const DataMapper& res, const QInt8* blockA, const QInt8* blockB,
+                  Index rows, Index depth, Index cols, QInt32 alpha,
+                  Index strideA=-1, Index strideB=-1, Index offsetA=0, Index offsetB=0);
+};
+
+template<typename Index, typename DataMapper, int mr, int nr, bool ConjugateLhs, bool ConjugateRhs>
+EIGEN_DONT_INLINE
+void gebp_kernel<QInt8, QInt8, Index, DataMapper, mr, nr, ConjugateLhs, ConjugateRhs>
+::operator()(const DataMapper& res, const QInt8* blockA, const QInt8* blockB,
+             Index rows, Index depth, Index cols, QInt32 alpha,
+             Index strideA, Index strideB, Index offsetA, Index offsetB)
+{
+  EIGEN_STATIC_ASSERT(!ConjugateLhs, YOU_MADE_A_PROGRAMMING_MISTAKE);
+  EIGEN_STATIC_ASSERT(!ConjugateRhs, YOU_MADE_A_PROGRAMMING_MISTAKE);
+
+  eigen_assert(alpha.value == 1);
+  eigen_assert(strideA == -1);
+  eigen_assert(strideB == -1);
+  eigen_assert(offsetA == 0);
+  eigen_assert(offsetB == 0);
+
+  eigen_assert(rows > 0);
+  eigen_assert(cols > 0);
+  eigen_assert(depth > 0);
+  eigen_assert(blockA);
+  eigen_assert(blockB);
+
+  for (Index j = 0; j < cols; ++j) {
+    Index startB = j * depth;
+
+    for (Index i = 0; i < rows; ++i) {
+      Index startA = i * depth;
+
+      for (Index k = 0; k < depth; ++k) {
+        res(i, j) += blockA[startA + k] * blockB[startB + k];
+      }
+    }
+  }
+}
+#endif
+
+
+// This definition tackle the case where the lhs is encoded using signed 8bit
+// integers and the rhs using unsigned 8bit integers.
+#ifndef EIGEN_USE_OPTIMIZED_INT8_UINT8_MAT_MAT_PRODUCT
+template<bool _ConjLhs, bool _ConjRhs>
+class gebp_traits<QInt8, QUInt8, _ConjLhs, _ConjRhs>
+{
+public:
+  typedef QInt8 LhsScalar;
+  typedef QUInt8 RhsScalar;
+  typedef QInt32 ResScalar;
+
+  enum {
+    // register block size along the M and N directions
+    // One for the current implementation
+    nr = 1,
+    mr = 1,
+    // Progress made at each iteration of the product loop
+    // also 1 for the current implementation
+    LhsProgress = 1,
+    RhsProgress = 1
+  };
+};
+
+// Mat-Mat product of a signed 8bit lhs with an unsigned 8bit rhs
+template<typename Index, typename DataMapper, int mr, int nr, bool ConjugateLhs, bool ConjugateRhs>
+struct gebp_kernel<QInt8, QUInt8, Index, DataMapper, mr, nr, ConjugateLhs, ConjugateRhs>
+{
+  EIGEN_DONT_INLINE
+  void operator()(const DataMapper& res, const QInt8* blockA, const QUInt8* blockB,
+                  Index rows, Index depth, Index cols, QInt32 alpha,
+                  Index strideA=-1, Index strideB=-1, Index offsetA=0, Index offsetB=0);
+};
+
+template<typename Index, typename DataMapper, int mr, int nr, bool ConjugateLhs, bool ConjugateRhs>
+EIGEN_DONT_INLINE
+void gebp_kernel<QInt8, QUInt8, Index, DataMapper, mr, nr, ConjugateLhs, ConjugateRhs>
+::operator()(const DataMapper& res, const QInt8* blockA, const QUInt8* blockB,
+             Index rows, Index depth, Index cols, QInt32 alpha,
+             Index strideA, Index strideB, Index offsetA, Index offsetB)
+{
+  EIGEN_STATIC_ASSERT(!ConjugateLhs, YOU_MADE_A_PROGRAMMING_MISTAKE);
+  EIGEN_STATIC_ASSERT(!ConjugateRhs, YOU_MADE_A_PROGRAMMING_MISTAKE);
+
+  eigen_assert(alpha.value == 1);
+  eigen_assert(strideA == -1);
+  eigen_assert(strideB == -1);
+  eigen_assert(offsetA == 0);
+  eigen_assert(offsetB == 0);
+
+  eigen_assert(rows > 0);
+  eigen_assert(cols > 0);
+  eigen_assert(depth > 0);
+  eigen_assert(blockA);
+  eigen_assert(blockB);
+
+  for (Index j = 0; j < cols; ++j) {
+    Index startB = j * depth;
+
+    for (Index i = 0; i < rows; ++i) {
+      Index startA = i * depth;
+
+      for (Index k = 0; k < depth; ++k) {
+        res(i, j) += blockA[startA + k] * blockB[startB + k];
+      }
+    }
+  }
+}
+#endif
+
+
+// This definition tackle the case where the khs is encoded using unsigned 8bit
+// integers and the rhs using signed 8bit integers.
+#ifndef EIGEN_USE_OPTIMIZED_UINT8_INT8_MAT_MAT_PRODUCT
+template<bool _ConjLhs, bool _ConjRhs>
+class gebp_traits<QUInt8, QInt8, _ConjLhs, _ConjRhs>
+{
+public:
+  typedef QUInt8 LhsScalar;
+  typedef QInt8 RhsScalar;
+  typedef QInt32 ResScalar;
+
+  enum {
+    // register block size along the M and N directions
+    // One for the current implementation
+    nr = 1,
+    mr = 1,
+    // Progress made at each iteration of the product loop
+    // also 1 for the current implementation
+    LhsProgress = 1,
+    RhsProgress = 1
+  };
+};
+
+
+// Mat-Mat product of an unsigned 8bit lhs with a signed 8bit rhs
+template<typename Index, typename DataMapper, int mr, int nr, bool ConjugateLhs, bool ConjugateRhs>
+struct gebp_kernel<QUInt8, QInt8, Index, DataMapper, mr, nr, ConjugateLhs, ConjugateRhs>
+{
+  EIGEN_DONT_INLINE
+  void operator()(const DataMapper& res, const QUInt8* blockA, const QInt8* blockB,
+                  Index rows, Index depth, Index cols, QInt32 alpha,
+                  Index strideA=-1, Index strideB=-1, Index offsetA=0, Index offsetB=0);
+};
+
+template<typename Index, typename DataMapper, int mr, int nr, bool ConjugateLhs, bool ConjugateRhs>
+EIGEN_DONT_INLINE
+void gebp_kernel<QUInt8, QInt8, Index, DataMapper, mr, nr, ConjugateLhs, ConjugateRhs>
+::operator()(const DataMapper& res, const QUInt8* blockA, const QInt8* blockB,
+             Index rows, Index depth, Index cols, QInt32 alpha,
+             Index strideA, Index strideB, Index offsetA, Index offsetB)
+{
+  EIGEN_STATIC_ASSERT(!ConjugateLhs, YOU_MADE_A_PROGRAMMING_MISTAKE);
+  EIGEN_STATIC_ASSERT(!ConjugateRhs, YOU_MADE_A_PROGRAMMING_MISTAKE);
+
+  eigen_assert(alpha.value == 1);
+  eigen_assert(strideA == -1);
+  eigen_assert(strideB == -1);
+  eigen_assert(offsetA == 0);
+  eigen_assert(offsetB == 0);
+
+  eigen_assert(rows > 0);
+  eigen_assert(cols > 0);
+  eigen_assert(depth > 0);
+  eigen_assert(blockA);
+  eigen_assert(blockB);
+
+  for (Index j = 0; j < cols; ++j) {
+    Index startB = j * depth;
+
+    for (Index i = 0; i < rows; ++i) {
+      Index startA = i * depth;
+
+      for (Index k = 0; k < depth; ++k) {
+        res(i, j) += blockA[startA + k] * blockB[startB + k];
+      }
+    }
+  }
+}
+#endif
+
+}  // namespace internal
+}  // namespace Eigen
+
+
+
+#endif  // EIGEN_CXX11_FIXED_POINT_MAT_MAT_PRODUCT_H

third_party/eigen3/unsupported/Eigen/SpecialFunctions

+#include "unsupported/Eigen/SpecialFunctions"