IVGCVSW-7109: Add Batch MatMul front end support - Reference

  * Descriptors added for BatchMatMul
  * Layer definition added
  * Input validation added (will likely change when opt. param support comes in)
  * Ref workload implementation for BatchMatMul added (will also change with opt. param support)
  * Ref layer tests made for BatchMatMul
  * CMake and other build files updated

Signed-off-by: Samuel Yap <samuel.yap@arm.com>
Change-Id: Ic885301da543ee0fbe7922b85e7f9658c4efc617

1 files changed, 46 insertions, 0 deletions

diff --git a/src/armnn/layers/BatchMatMulLayer.hpp b/src/armnn/layers/BatchMatMulLayer.hpp
new file mode 100644
index 0000000000..8dc79d33c4
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+++ b/src/armnn/layers/BatchMatMulLayer.hpp
@@ -0,0 +1,46 @@
+//
+// Copyright © 2022 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#pragma once
+
+#include "LayerWithParameters.hpp"
+
+namespace armnn
+{
+
+class BatchMatMulLayer : public LayerWithParameters<BatchMatMulDescriptor>
+{
+public:
+    /// Makes a workload for the BatchMatMul type.
+    /// @param [in] graph The graph where this layer can be found.
+    /// @param [in] factory The workload factory which will create the workload.
+    /// @return A pointer to the created workload, or nullptr if not created.
+    virtual std::unique_ptr<IWorkload> CreateWorkload(const IWorkloadFactory &factory) const override;
+
+    /// Creates a dynamically-allocated copy of this layer.
+    /// @param [in] graph The graph into which this layer is being cloned.
+    BatchMatMulLayer* Clone(Graph &graph) const override;
+
+    /// Infers the output shape from the given input shapes.
+    /// @param [in] inputShapes The vector of input shapes for BatchMatMul.
+    /// @return A vector of inferred output shape.
+    std::vector<TensorShape> InferOutputShapes(const std::vector<TensorShape>& inputShapes) const override;
+
+    /// Check if the input tensor shapes
+    /// will lead to a valid configuration of @ref BatchMatMulLayer.
+    /// @param [in] shapeInferenceMethod Indicates if output shape shall be overwritten or just validated.
+    void ValidateTensorShapesFromInputs() override;
+
+protected:
+    /// Constructor to create a BatchMatMulLayer.
+    /// @param [in] param BatchMatMulDescriptor to configure optional parameters for batch matrix multiplication
+    /// @param [in] name Optional name for the layer
+    BatchMatMulLayer(const BatchMatMulDescriptor& param, const char* name);
+
+    /// Default destructor
+    ~BatchMatMulLayer() = default;
+};
+
+}
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