IVGCVSW-7104: BatchMatMul Serializer/Deserializer Support

  * Updated FlatBuffers schema for BatchMatMul layer type
  * Added Serializer and Deserializer implementations for BatchMatMul
  * Added unit tests for BatchMatMul serialization and deserialization
  * Updated CMakeLists and docs

Signed-off-by: Samuel Yap <samuel.yap@arm.com>
Change-Id: Iad63afbd036a3eb648683eb7416a475561aa20cb
diff --git a/src/armnnDeserializer/test/DeserializeBatchMatMul.cpp b/src/armnnDeserializer/test/DeserializeBatchMatMul.cpp
new file mode 100644
index 0000000..40f93ce
--- /dev/null
+++ b/src/armnnDeserializer/test/DeserializeBatchMatMul.cpp
@@ -0,0 +1,213 @@
+//
+// Copyright © 2022 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include "ParserFlatbuffersSerializeFixture.hpp"
+#include <armnnDeserializer/IDeserializer.hpp>
+
+#include <doctest/doctest.h>
+
+#include <string>
+
+TEST_SUITE("Deserializer_BatchMatMul")
+{
+struct BatchMatMulFixture : public ParserFlatbuffersSerializeFixture
+{
+    explicit BatchMatMulFixture(const std::string& inputXShape,
+                                const std::string& inputYShape,
+                                const std::string& outputShape,
+                                const std::string& dataType)
+    {
+        m_JsonString = R"(
+            {
+                inputIds:[
+                    0,
+                    1
+                ],
+                outputIds:[
+                    3
+                ],
+                layers:[
+                    {
+                        layer_type:"InputLayer",
+                        layer:{
+                            base:{
+                                layerBindingId:0,
+                                base:{
+                                    index:0,
+                                    layerName:"InputXLayer",
+                                    layerType:"Input",
+                                    inputSlots:[
+                                        {
+                                            index:0,
+                                            connection:{
+                                                sourceLayerIndex:0,
+                                                outputSlotIndex:0
+                                            },
+
+                                        }
+                                    ],
+                                    outputSlots:[
+                                        {
+                                            index:0,
+                                            tensorInfo:{
+                                                dimensions:)" + inputXShape + R"(,
+                                                dataType:)" + dataType + R"(
+                                            },
+
+                                        }
+                                    ],
+
+                                },
+
+                            }
+                        },
+
+                    },
+                    {
+                        layer_type:"InputLayer",
+                        layer:{
+                            base:{
+                                layerBindingId:1,
+                                base:{
+                                    index:1,
+                                    layerName:"InputYLayer",
+                                    layerType:"Input",
+                                    inputSlots:[
+                                        {
+                                            index:0,
+                                            connection:{
+                                                sourceLayerIndex:0,
+                                                outputSlotIndex:0
+                                            },
+
+                                        }
+                                    ],
+                                    outputSlots:[
+                                        {
+                                            index:0,
+                                            tensorInfo:{
+                                                dimensions:)" + inputYShape + R"(,
+                                                dataType:)" + dataType + R"(
+                                            },
+
+                                        }
+                                    ],
+
+                                },
+
+                            }
+                        },
+
+                    },
+                    {
+                        layer_type:"BatchMatMulLayer",
+                        layer:{
+                            base:{
+                                index:2,
+                                layerName:"BatchMatMulLayer",
+                                layerType:"BatchMatMul",
+                                inputSlots:[
+                                    {
+                                        index:0,
+                                        connection:{
+                                            sourceLayerIndex:0,
+                                            outputSlotIndex:0
+                                        },
+
+                                    },
+                                    {
+                                        index:1,
+                                        connection:{
+                                            sourceLayerIndex:1,
+                                            outputSlotIndex:0
+                                        },
+
+                                    }
+                                ],
+                                outputSlots:[
+                                    {
+                                        index:0,
+                                        tensorInfo:{
+                                            dimensions:)" + outputShape + R"(,
+                                            dataType:)" + dataType + R"(
+                                        },
+
+                                    }
+                                ],
+
+                            },
+                            descriptor:{
+                                transposeX:false,
+                                transposeY:false,
+                                adjointX:false,
+                                adjointY:false,
+                                dataLayoutX:NHWC,
+                                dataLayoutY:NHWC
+                            }
+                        },
+
+                    },
+                    {
+                        layer_type:"OutputLayer",
+                        layer:{
+                            base:{
+                                layerBindingId:0,
+                                base:{
+                                    index:3,
+                                    layerName:"OutputLayer",
+                                    layerType:"Output",
+                                    inputSlots:[
+                                        {
+                                            index:0,
+                                            connection:{
+                                                sourceLayerIndex:2,
+                                                outputSlotIndex:0
+                                            },
+
+                                        }
+                                    ],
+                                    outputSlots:[
+                                        {
+                                            index:0,
+                                            tensorInfo:{
+                                                dimensions:)" + outputShape + R"(,
+                                                dataType:)" + dataType + R"(
+                                            },
+
+                                        }
+                                    ],
+
+                                }
+                            }
+                        },
+
+                    }
+                ]
+            }
+        )";
+        Setup();
+    }
+};
+
+struct SimpleBatchMatMulFixture : BatchMatMulFixture
+{
+    SimpleBatchMatMulFixture()
+        : BatchMatMulFixture("[ 1, 2, 2, 1 ]",
+                             "[ 1, 2, 2, 1 ]",
+                             "[ 1, 2, 2, 1 ]",
+                             "Float32")
+    {}
+};
+
+TEST_CASE_FIXTURE(SimpleBatchMatMulFixture, "SimpleBatchMatMulTest")
+{
+    RunTest<4, armnn::DataType::Float32>(
+        0,
+        {{"InputXLayer", { 1.0f, 2.0f, 3.0f, 4.0f }},
+         {"InputYLayer", { 5.0f, 6.0f, 7.0f, 8.0f }}},
+        {{"OutputLayer", { 19.0f, 22.0f, 43.0f, 50.0f }}});
+}
+
+}
\ No newline at end of file