COMPMID-1754: NEON: Implement Maximum, Minumum, SquaredDifference

Change-Id: I77e8c6a8af6ad841293ed5e66ed582035cc1424b
Reviewed-on: https://review.mlplatform.org/339
Reviewed-by: Michalis Spyrou <michalis.spyrou@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>

1 files changed, 131 insertions, 0 deletions

diff --git a/arm_compute/core/NEON/kernels/NEElementwiseOperationKernel.h b/arm_compute/core/NEON/kernels/NEElementwiseOperationKernel.h
new file mode 100644
index 0000000000..93ad437322
--- /dev/null
+++ b/arm_compute/core/NEON/kernels/NEElementwiseOperationKernel.h
@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2018 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, INNEUDING 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 NEAIM, 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_NEELEMENTWISEOPERATIONKERNEL_H__
+#define __ARM_COMPUTE_NEELEMENTWISEOPERATIONKERNEL_H__
+
+#include "arm_compute/core/NEON/INEKernel.h"
+#include "arm_compute/core/Types.h"
+
+namespace arm_compute
+{
+class ITensor;
+
+/** Interface for an element-wise operation kernel
+ *
+ * Element-wise operation is computed by:
+ * @f[ output(x,y) = OP(input1(x,y), input2(x,y))@f]
+ *
+ */
+class NEElementwiseOperationKernel : public INEKernel
+{
+public:
+    const char *name() const override
+    {
+        return "NEElementwiseOperationKernel";
+    }
+    /** Default constructor */
+    NEElementwiseOperationKernel();
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    NEElementwiseOperationKernel(const NEElementwiseOperationKernel &) = delete;
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    NEElementwiseOperationKernel &operator=(const NEElementwiseOperationKernel &) = delete;
+    /** Allow instances of this class to be moved */
+    NEElementwiseOperationKernel(NEElementwiseOperationKernel &&) = default;
+    /** Allow instances of this class to be moved */
+    NEElementwiseOperationKernel &operator=(NEElementwiseOperationKernel &&) = default;
+    /** Default destructor */
+    ~NEElementwiseOperationKernel() = default;
+
+    // Inherited methods overridden:
+    void run(const Window &window, const ThreadInfo &info) override;
+
+protected:
+    /** Validate the argument passed to the kernel
+     *
+     * @param[in] input1 First tensor input. Data types supported: S16/F16/S32/F32.
+     * @param[in] input2 Second tensor input. Data types supported: Same as @p input1.
+     * @param[in] output Output tensor. Data types supported: Same as @p input1.
+     */
+    virtual Status validate_arguments(const ITensorInfo &input1, const ITensorInfo &input2, const ITensorInfo &output) = 0;
+
+    /** Commmon configure function for element-wise operators with no additional options (e.g. Min, Max, SquaredDiff)
+     *
+     */
+    template <ArithmeticOperation op>
+    void configure_common(const ITensor *input1, const ITensor *input2, ITensor *output);
+
+    ArithmeticOperation _op; // Code of the operation to execute
+
+private:
+    /** Common signature for all the specialised add functions
+     *
+     * @param[in]  input1 An input tensor. Data types supported: S16/F16/S32/F32
+     * @param[in]  input2 An input tensor. Data types supported: S16/F16/S32/F32
+     * @param[out] output The output tensor. Data types supported: S16/F16/S32/F32
+     * @param[in]  window Region on which to execute the kernel.
+     */
+    using ElementwiseFunction = void(const ITensor *input1, const ITensor *input2, ITensor *output, const Window &window);
+    /** Add function to use for the particular tensor types passed to configure() */
+    ElementwiseFunction *_func;
+    const ITensor       *_input1;
+    const ITensor       *_input2;
+    ITensor             *_output;
+};
+
+class NEArithmeticOperationKernel : public NEElementwiseOperationKernel
+{
+public:
+    NEArithmeticOperationKernel()
+        : NEElementwiseOperationKernel()
+    {
+    }
+
+    /** Static function to check if given info will lead to a valid configuration of @ref NEArithmeticOperationKernel
+     *
+     * @param[in] op     Arithmetic operation to be executed.
+     * @param[in] input1 First tensor input. Data types supported: QASYMM8/S16/F16/S32/F32.
+     * @param[in] input1 First tensor input. Data types supported: Same as @p input1.
+     * @param[in] input2 Second tensor input. Data types supported: Same as @p input1.
+     * @param[in] output Output tensor. Data types supported: Same as @p input1.
+     */
+    void configure(ArithmeticOperation op, const ITensor *input1, const ITensor *input2, ITensor *output);
+
+    /** Static function to check if given info will lead to a valid configuration of @ref NEArithmeticOperationKernel
+     *
+     * @param[in] op     Arithmetic operation to be executed.
+     * @param[in] input1 First tensor input info. Data types supported: QASYMM8/S16/F16/S32/F32.
+     * @param[in] input1 First tensor input info. Data types supported: Same as @p input1
+     * @param[in] input2 Second tensor input info. Data types supported: Same as @p input1.
+     * @param[in] output Output tensor info. Data types supported: Same as @p input1.
+     *
+     * @return a Status
+     */
+    static Status validate(ArithmeticOperation op, const ITensorInfo *input1, const ITensorInfo *input2, const ITensorInfo *output);
+
+protected:
+    // Inherited methods overridden:
+    Status validate_arguments(const ITensorInfo &input1, const ITensorInfo &input2, const ITensorInfo &output) override;
+};
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_NEELEMENTWISEOPERATIONKERNEL_H__ */