COMPMID-873: Integrate RSH NEON Depthwise Convolution routine

Change-Id: Ida1e9a836bc518bfe5563e16bf7f92bde5fc13f7
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/118472
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Pablo Tello <pablo.tello@arm.com>

1 files changed, 77 insertions, 0 deletions

diff --git a/arm_compute/core/NEON/kernels/convolution/winograd/transforms/kernel.hpp b/arm_compute/core/NEON/kernels/convolution/winograd/transforms/kernel.hpp
new file mode 100644
index 0000000000..bad3ef2249
--- /dev/null
+++ b/arm_compute/core/NEON/kernels/convolution/winograd/transforms/kernel.hpp
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2017 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.
+ */
+
+#include "arm_compute/core/NEON/kernels/convolution/winograd/winograd_gemm.hpp"
+using namespace winograd;
+
+
+template <int otr, int otc, int kr, int kc>
+template <typename T>
+WinogradGEMM<otr, otc, kr, kc>::WeightsTransform<T>::WeightsTransform(
+  const T* const input,
+  T* const output,
+  const int matrix_stride,      /** Stride across matrices in the output. */
+  const int matrix_row_stride,  /** Stride across rows of the matrix. */
+  const int n_output_channels,
+  const int n_input_channels
+) : inptr(input), outptr(output),
+    matrix_stride(matrix_stride), matrix_row_stride(matrix_row_stride),
+    n_output_channels(n_output_channels), n_input_channels(n_input_channels)
+{
+}
+
+
+template <int otr, int otc, int kr, int kc>
+template <typename T>
+unsigned int WinogradGEMM<otr, otc, kr, kc>::WeightsTransform<T>::get_window() const
+{
+  // TODO When the weights transform supports multithreading, return the number
+  // of output channels. For now we return 1 to indicate that the weights must
+  // be transformed as a single block.
+  // return n_output_channels;
+  return 1;
+}
+
+
+template <int otr, int otc, int kr, int kc>
+template <typename T>
+void WinogradGEMM<otr, otc, kr, kc>::WeightsTransform<T>::run(
+  const unsigned int start, const unsigned int stop
+)
+{
+  // TODO When the weights transform supports multithreading call execute for a
+  // portion of the output channels.
+  (void) start;
+  (void) stop;
+
+  // For now, just do all of the work.
+  execute(
+    n_output_channels,
+    n_input_channels,
+    inptr,
+    outptr,
+    matrix_stride,
+    matrix_row_stride
+  );
+}