COMPMID-3638: Move NEON kernels
Signed-off-by: Michalis Spyrou <michalis.spyrou@arm.com>
Change-Id: Ieed3e4bc8be7fef80c90c5094599b477a56fc473
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4285
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/core/NEON/kernels/NECol2ImKernel.h b/src/core/NEON/kernels/NECol2ImKernel.h
new file mode 100644
index 0000000..59d1d74
--- /dev/null
+++ b/src/core/NEON/kernels/NECol2ImKernel.h
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2017-2020 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 ARM_COMPUTE_NECOL2IMKERNEL_H
+#define ARM_COMPUTE_NECOL2IMKERNEL_H
+
+#include "src/core/NEON/INEKernel.h"
+
+#include "arm_compute/core/Size2D.h"
+
+namespace arm_compute
+{
+class ITensor;
+
+/** NEON kernel to perform col2im reshaping.
+ *
+ * Rearranges each matrix column into image blocks. It's the inverse operation of @ref NEIm2ColKernel.
+ *
+ * For example, a vector of 9 elements can be reshaped to a block(image) of 3x3:
+ *
+ * @f[
+ * \left( \begin{array}{ccccccccc}
+ * a0 & a1 & a2 & a3 & a4 & a5 & a6 & a7 & a8 \\
+ * \end{array} \right)
+ * \rightarrow
+ * \left( \begin{array}{ccc}
+ * a0 & a1 & a2 \\
+ * a3 & a4 & a5 \\
+ * a6 & a7 & a8 \\
+ * \end{array} \right)
+ * @f]
+ */
+class NECol2ImKernel : public INEKernel
+{
+public:
+ const char *name() const override
+ {
+ return "NECol2ImKernel";
+ }
+ /** Default constructor */
+ NECol2ImKernel();
+ /** Prevent instances of this class from being copied (As this class contains pointers) */
+ NECol2ImKernel(const NECol2ImKernel &) = delete;
+ /** Prevent instances of this class from being copied (As this class contains pointers) */
+ NECol2ImKernel &operator=(const NECol2ImKernel &) = delete;
+ /** Allow instances of this class to be moved */
+ NECol2ImKernel(NECol2ImKernel &&) = default;
+ /** Allow instances of this class to be moved */
+ NECol2ImKernel &operator=(NECol2ImKernel &&) = default;
+ /** Default destructor */
+ ~NECol2ImKernel() = default;
+
+ /** Set the input and output of the kernel.
+ *
+ * @param[in] input The input tensor to convert. Data types supported: All
+ * @param[out] output The output tensor. 3 lower dimensions represent a single output [width, height, OFM],
+ * while the rest represent batch of outputs. Data types supported: Same as @p input
+ * @param[in] convolved_dims Output convolved dimensions.
+ */
+ void configure(const ITensor *input, ITensor *output, const Size2D &convolved_dims);
+ /** Static function to check if given info will lead to a valid configuration of @ref NECol2ImKernel
+ *
+ * @param[in] input The input tensor to convert. Data types supported: All
+ * @param[in] output The output tensor. 3 lower dimensions represent a single output [width, height, OFM],
+ * while the rest represent batch of outputs. Data types supported: Same as @p input
+ * @param[in] convolved_dims Output convolved dimensions.
+ *
+ * @return a status
+ */
+ static Status validate(const ITensorInfo *input, const ITensorInfo *output, const Size2D &convolved_dims);
+
+ // Inherited methods overridden:
+ void run(const Window &window, const ThreadInfo &info) override;
+
+private:
+ /** Template function to run the col2im
+ *
+ * @param[in] window Region on which to execute the kernel. (Must be a valid region of the window returned by window()).
+ */
+ template <typename T>
+ void run_col2im(const Window &window);
+
+ /** Common signature for all the specialised col2im functions
+ *
+ * @param[in] window Region on which to execute the kernel.
+ */
+ using Col2ImFunctionPtr = void (NECol2ImKernel::*)(const Window &window);
+
+ Col2ImFunctionPtr _func;
+ const ITensor *_input;
+ ITensor *_output;
+ Size2D _convolved_dims;
+};
+} // namespace arm_compute
+#endif /*ARM_COMPUTE_NECOL2IMKERNEL_H */