COMPMID-793 : Add graph intermediate representation

Change-Id: Ic1685de4e19e0ac79669ef2da64e1dc96c7ea0bf
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/115248
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>

17 files changed, 1042 insertions, 0 deletions

diff --git a/arm_compute/graph2/nodes/ActivationLayerNode.h b/arm_compute/graph2/nodes/ActivationLayerNode.h
new file mode 100644
index 0000000000..c3775231a4
--- /dev/null
+++ b/arm_compute/graph2/nodes/ActivationLayerNode.h
@@ -0,0 +1,59 @@
+/*
+ * 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, 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_GRAPH2_ACTIVATION_LAYER_NODE_H__
+#define __ARM_COMPUTE_GRAPH2_ACTIVATION_LAYER_NODE_H__
+
+#include "arm_compute/graph2/INode.h"
+
+namespace arm_compute
+{
+namespace graph2
+{
+class ActivationLayerNode final : public INode
+{
+public:
+    /** Constructor
+     *
+     * @param[in] info Activation Layer information
+     */
+    ActivationLayerNode(ActivationLayerInfo info);
+    /** Activation metadata accessor
+     *
+     * @return The activation info of the layer
+     */
+    ActivationLayerInfo activation_info() const;
+
+    // Inherited overridden methods:
+    Status           validate() override;
+    NodeType         type() const override;
+    bool             forward_descriptors() override;
+    TensorDescriptor configure_output(size_t idx) const override;
+    void accept(INodeVisitor &v) override;
+
+private:
+    ActivationLayerInfo _info;
+};
+} // namespace graph2
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_GRAPH2_ACTIVATION_LAYER_NODE_H__ */
diff --git a/arm_compute/graph2/nodes/BatchNormalizationLayerNode.h b/arm_compute/graph2/nodes/BatchNormalizationLayerNode.h
new file mode 100644
index 0000000000..a521938414
--- /dev/null
+++ b/arm_compute/graph2/nodes/BatchNormalizationLayerNode.h
@@ -0,0 +1,71 @@
+/*
+ * 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, 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_GRAPH2_BATCH_NORMALIZATION_LAYER_NODE_H__
+#define __ARM_COMPUTE_GRAPH2_BATCH_NORMALIZATION_LAYER_NODE_H__
+
+#include "arm_compute/graph2/INode.h"
+
+namespace arm_compute
+{
+namespace graph2
+{
+class BatchNormalizationLayerNode final : public INode
+{
+public:
+    /** Constructor
+     *
+     * @param[in] epsilon          (Optional) Epsilon parameter. Defaults to 1.f
+     * @param[in] fused_activation (Optional) Fused activation layer. Disabled if not specified
+     */
+    BatchNormalizationLayerNode(float epsilon = 1.f, ActivationLayerInfo fused_activation = ActivationLayerInfo());
+    /** Epsilon parameter accessor
+     *
+     * @return Epsilon parameter
+     */
+    float epsilon() const;
+    /** Returns fused activation
+     *
+     * @return Fused activation
+     */
+    ActivationLayerInfo fused_activation() const;
+    /** Sets fused activation
+     *
+     * @param[in] fused_activation Fused activation to set
+     */
+    void set_fused_activation(ActivationLayerInfo fused_activation);
+
+    // Inherited overridden methods:
+    Status           validate() override;
+    NodeType         type() const override;
+    bool             forward_descriptors() override;
+    TensorDescriptor configure_output(size_t idx) const override;
+    void accept(INodeVisitor &v) override;
+
+private:
+    float               _epsilon;
+    ActivationLayerInfo _fused_activation;
+};
+} // namespace graph2
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_GRAPH2_BATCH_NORMALIZATION_LAYER_NODE_H__ */
diff --git a/arm_compute/graph2/nodes/ConstNode.h b/arm_compute/graph2/nodes/ConstNode.h
new file mode 100644
index 0000000000..73a2246498
--- /dev/null
+++ b/arm_compute/graph2/nodes/ConstNode.h
@@ -0,0 +1,54 @@
+/*
+ * 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, 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_GRAPH2_CONST_NODE_H__
+#define __ARM_COMPUTE_GRAPH2_CONST_NODE_H__
+
+#include "arm_compute/graph2/INode.h"
+
+namespace arm_compute
+{
+namespace graph2
+{
+class ConstNode final : public INode
+{
+public:
+    /** Constructor
+     *
+     * @param[in] desc Tensor descriptor
+     */
+    ConstNode(TensorDescriptor desc);
+
+    // Inherited overridden methods:
+    Status           validate() override;
+    NodeType         type() const override;
+    bool             forward_descriptors() override;
+    TensorDescriptor configure_output(size_t idx) const override;
+    void accept(INodeVisitor &v) override;
+
+private:
+    TensorDescriptor _desc;
+};
+} // namespace graph2
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_GRAPH2_CONST_NODE_H__ */
diff --git a/arm_compute/graph2/nodes/ConvolutionLayerNode.h b/arm_compute/graph2/nodes/ConvolutionLayerNode.h
new file mode 100644
index 0000000000..1af344ea13
--- /dev/null
+++ b/arm_compute/graph2/nodes/ConvolutionLayerNode.h
@@ -0,0 +1,83 @@
+/*
+ * 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, 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_GRAPH2_CONVOLUTION_LAYER_NODE_H__
+#define __ARM_COMPUTE_GRAPH2_CONVOLUTION_LAYER_NODE_H__
+
+#include "arm_compute/graph2/INode.h"
+
+namespace arm_compute
+{
+namespace graph2
+{
+class ConvolutionLayerNode final : public INode
+{
+public:
+    /** Constructor
+     *
+     * @param[in] info   Convolution layer attributes
+     * @param[in] method (Optional) Convolution method to use
+     */
+    ConvolutionLayerNode(PadStrideInfo info, ConvolutionMethod method = ConvolutionMethod::DEFAULT);
+    /** Sets the convolution layer method to use
+     *
+     * @param[in] method Method to use for convolution
+     */
+    void set_convolution_method(ConvolutionMethod method);
+    /** Convolution layer method accessor
+     *
+     * @note This is an indication on which convolution layer implementation to use,
+     *       if it fails to be created the library's heuristic approach will be used
+     *
+     * @return Convolution layer method do be used by the node
+     */
+    ConvolutionMethod convolution_method() const;
+    /** Convolution metadata accessor
+     *
+     * @return Convolution information
+     */
+    PadStrideInfo convolution_info() const;
+    /** Computes convolution output shape
+     *
+     * @param[in] input_shape   Input shape
+     * @param[in] weights_shape Weights shape
+     * @param[in] info          Convolution operation attributes
+     *
+     * @return Output shape
+     */
+    static TensorShape compute_output_shape(TensorShape input_shape, TensorShape weights_shape, PadStrideInfo info);
+
+    // Inherited overridden methods:
+    Status           validate() override;
+    NodeType         type() const override;
+    bool             forward_descriptors() override;
+    TensorDescriptor configure_output(size_t idx) const override;
+    void accept(INodeVisitor &v) override;
+
+private:
+    PadStrideInfo     _info;
+    ConvolutionMethod _method;
+};
+} // namespace graph2
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_GRAPH2_CONVOLUTION_LAYER_NODE_H__ */
diff --git a/arm_compute/graph2/nodes/DepthConcatenateLayerNode.h b/arm_compute/graph2/nodes/DepthConcatenateLayerNode.h
new file mode 100644
index 0000000000..617b9842fb
--- /dev/null
+++ b/arm_compute/graph2/nodes/DepthConcatenateLayerNode.h
@@ -0,0 +1,77 @@
+/*
+ * 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, 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_GRAPH2_DEPTH_CONCATENATE_LAYER_NODE_H__
+#define __ARM_COMPUTE_GRAPH2_DEPTH_CONCATENATE_LAYER_NODE_H__
+
+#include "arm_compute/graph2/INode.h"
+
+namespace arm_compute
+{
+namespace graph2
+{
+class DepthConcatenateLayerNode final : public INode
+{
+public:
+    /** Constructor
+     *
+     * @param[in] total_nodes Number of nodes that will get concatenated
+     */
+    DepthConcatenateLayerNode(unsigned int total_nodes);
+    /** Computes depth concatenations output shape
+     *
+     * @param input_shapes   Shapes of the inputs
+     *
+     * @return Expected output shape
+     */
+    static TensorShape compute_output_shape(const std::vector<TensorShape> &input_shapes);
+    /** Disables or not the depth concatenate node
+     *
+     * @warning This is used when depth concatenate is performed with sub-tensors,
+     *          where this node is used as a placeholder.
+     *
+     * @param[in] is_enabled If true a backend function is created to perform the depth concatenation (involves copying),
+     *                       while if false, no function is created and we assume that subtensors are properly set to simulate
+     *                       a no copy operation.
+     */
+    void set_enabled(bool is_enabled);
+    /** Enabled parameter accessor
+     *
+     * @return True if a backend function is to be created else false
+     */
+    bool is_enabled() const;
+
+    // Inherited overridden methods:
+    Status           validate() override;
+    NodeType         type() const override;
+    bool             forward_descriptors() override;
+    TensorDescriptor configure_output(size_t idx) const override;
+    void accept(INodeVisitor &v) override;
+
+private:
+    unsigned int _total_nodes;
+    bool         _is_enabled;
+};
+} // namespace graph2
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_GRAPH2_DEPTH_CONCATENATE_LAYER_NODE_H__ */
diff --git a/arm_compute/graph2/nodes/DepthwiseConvolutionLayerNode.h b/arm_compute/graph2/nodes/DepthwiseConvolutionLayerNode.h
new file mode 100644
index 0000000000..1b05edf4dc
--- /dev/null
+++ b/arm_compute/graph2/nodes/DepthwiseConvolutionLayerNode.h
@@ -0,0 +1,83 @@
+/*
+ * 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, 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_GRAPH2_DEPTHWISE_CONVOLUTION_LAYER_NODE_H__
+#define __ARM_COMPUTE_GRAPH2_DEPTHWISE_CONVOLUTION_LAYER_NODE_H__
+
+#include "arm_compute/graph2/INode.h"
+
+namespace arm_compute
+{
+namespace graph2
+{
+class DepthwiseConvolutionLayerNode final : public INode
+{
+public:
+    /** Constructor
+     *
+     * @param[in] info   Convolution layer attributes
+     * @param[in] method Depthwise convolution method to use
+     */
+    DepthwiseConvolutionLayerNode(PadStrideInfo info, DepthwiseConvolutionMethod method = DepthwiseConvolutionMethod::DEFAULT);
+    /** Sets the depthwise convolution method to use
+     *
+     * @param[in] method Depthwise convolution method to use
+     */
+    void set_depthwise_convolution_method(DepthwiseConvolutionMethod method);
+    /** Depthwise convolution layer method accessor
+     *
+     * @note This is an indication on which depthwise implementation to use,
+     *       if it fails to be created the generic approach will be used
+     *
+     * @return Depthwise convolution layer method do be used by the node
+     */
+    DepthwiseConvolutionMethod depthwise_convolution_method() const;
+    /** Convolution metadata accessor
+     *
+     * @return Convolution information
+     */
+    PadStrideInfo convolution_info() const;
+    /** Computes depthwise convolution output shape
+     *
+     * @param[in] input_shape   Input shape
+     * @param[in] weights_shape Weights shape
+     * @param[in] info          Convolution operation attributes
+     *
+     * @return Output shape
+     */
+    static TensorShape compute_output_shape(TensorShape input_shape, TensorShape weights_shape, PadStrideInfo info);
+
+    // Inherited overridden methods:
+    Status           validate() override;
+    NodeType         type() const override;
+    bool             forward_descriptors() override;
+    TensorDescriptor configure_output(size_t idx) const override;
+    void accept(INodeVisitor &v) override;
+
+private:
+    PadStrideInfo              _info;
+    DepthwiseConvolutionMethod _method;
+};
+} // namespace graph2
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_GRAPH2_DEPTHWISE_CONVOLUTION_LAYER_NODE_H__ */
diff --git a/arm_compute/graph2/nodes/EltwiseLayerNode.h b/arm_compute/graph2/nodes/EltwiseLayerNode.h
new file mode 100644
index 0000000000..2b217decff
--- /dev/null
+++ b/arm_compute/graph2/nodes/EltwiseLayerNode.h
@@ -0,0 +1,59 @@
+/*
+ * 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, 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_GRAPH2_ELTWISE_LAYER_NODE_H__
+#define __ARM_COMPUTE_GRAPH2_ELTWISE_LAYER_NODE_H__
+
+#include "arm_compute/graph2/INode.h"
+
+namespace arm_compute
+{
+namespace graph2
+{
+class EltwiseLayerNode final : public INode
+{
+public:
+    /** Constructor
+     *
+     * @param[in] op Element-wise operation to perform
+     */
+    EltwiseLayerNode(EltwiseOperation op);
+    /** Eltwise operation accessor
+     *
+     * @return Eltwise operation that is to be performed by the node
+     */
+    EltwiseOperation eltwise_operation() const;
+
+    // Inherited overridden methods:
+    Status           validate() override;
+    NodeType         type() const override;
+    bool             forward_descriptors() override;
+    TensorDescriptor configure_output(size_t idx) const override;
+    void accept(INodeVisitor &v) override;
+
+private:
+    EltwiseOperation _op;
+};
+} // namespace graph2
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_GRAPH2_ELTWISE_LAYER_NODE_H__ */
diff --git a/arm_compute/graph2/nodes/FlattenLayerNode.h b/arm_compute/graph2/nodes/FlattenLayerNode.h
new file mode 100644
index 0000000000..de601f5f4e
--- /dev/null
+++ b/arm_compute/graph2/nodes/FlattenLayerNode.h
@@ -0,0 +1,48 @@
+/*
+ * 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, 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_GRAPH2_FLATTEN_LAYER_NODE_H__
+#define __ARM_COMPUTE_GRAPH2_FLATTEN_LAYER_NODE_H__
+
+#include "arm_compute/graph2/INode.h"
+
+namespace arm_compute
+{
+namespace graph2
+{
+class FlattenLayerNode final : public INode
+{
+public:
+    /** Default Constructor */
+    FlattenLayerNode();
+
+    // Inherited overridden methods:
+    Status           validate() override;
+    NodeType         type() const override;
+    bool             forward_descriptors() override;
+    TensorDescriptor configure_output(size_t idx) const override;
+    void accept(INodeVisitor &v) override;
+};
+} // namespace graph2
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_GRAPH2_FLATTEN_LAYER_NODE_H__ */
diff --git a/arm_compute/graph2/nodes/FullyConnectedLayerNode.h b/arm_compute/graph2/nodes/FullyConnectedLayerNode.h
new file mode 100644
index 0000000000..836f20fdb3
--- /dev/null
+++ b/arm_compute/graph2/nodes/FullyConnectedLayerNode.h
@@ -0,0 +1,74 @@
+/*
+ * 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, 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_GRAPH2_FULLY_CONNECTED_LAYER_NODE_H__
+#define __ARM_COMPUTE_GRAPH2_FULLY_CONNECTED_LAYER_NODE_H__
+
+#include "arm_compute/graph2/INode.h"
+
+namespace arm_compute
+{
+namespace graph2
+{
+class FullyConnectedLayerNode final : public INode
+{
+public:
+    /** Constructor
+     *
+     * @param[in] num_outputs Number of neurons in the layer
+     */
+    FullyConnectedLayerNode(unsigned int num_outputs);
+    /** Computes weights shape
+     *
+     * @warning Works for inputs with 1D batch space
+     *
+     * @param[in] input_shape Input shape
+     * @param[in] num_outputs Number of output neurons
+     *
+     * @return Weights shape
+     */
+    static TensorShape compute_weights_shape(TensorShape input_shape, unsigned int num_outputs);
+    /** Computes fully connected layer output shape
+     *
+     * @warning Works for inputs with 1D batch space
+     *
+     * @param[in] input_shape Input shape
+     * @param[in] num_outputs Number of output neurons
+     *
+     * @return Output shape
+     */
+    static TensorShape compute_output_shape(TensorShape input_shape, unsigned int num_outputs);
+
+    // Inherited overridden methods:
+    Status           validate() override;
+    NodeType         type() const override;
+    bool             forward_descriptors() override;
+    TensorDescriptor configure_output(size_t idx) const override;
+    void accept(INodeVisitor &v) override;
+
+private:
+    unsigned int _num_outputs;
+};
+} // namespace graph2
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_GRAPH2_FULLY_CONNECTED_LAYER_NODE_H__ */
diff --git a/arm_compute/graph2/nodes/InputNode.h b/arm_compute/graph2/nodes/InputNode.h
new file mode 100644
index 0000000000..2cad6f8fc6
--- /dev/null
+++ b/arm_compute/graph2/nodes/InputNode.h
@@ -0,0 +1,54 @@
+/*
+ * 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, 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_GRAPH2_INPUT_NODE_H__
+#define __ARM_COMPUTE_GRAPH2_INPUT_NODE_H__
+
+#include "arm_compute/graph2/INode.h"
+
+namespace arm_compute
+{
+namespace graph2
+{
+class InputNode final : public INode
+{
+public:
+    /** Constructor
+     *
+     * @param[in] desc Tensor descriptor
+     */
+    InputNode(TensorDescriptor desc);
+
+    // Inherited overridden methods:
+    Status           validate() override;
+    NodeType         type() const override;
+    bool             forward_descriptors() override;
+    TensorDescriptor configure_output(size_t idx) const override;
+    void accept(INodeVisitor &v) override;
+
+private:
+    TensorDescriptor _desc;
+};
+} // namespace graph2
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_GRAPH2_INPUT_NODE_H__ */
diff --git a/arm_compute/graph2/nodes/Nodes.h b/arm_compute/graph2/nodes/Nodes.h
new file mode 100644
index 0000000000..8201361304
--- /dev/null
+++ b/arm_compute/graph2/nodes/Nodes.h
@@ -0,0 +1,43 @@
+/*
+ * 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, 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_GRAPH2_NODES_H__
+#define __ARM_COMPUTE_GRAPH2_NODES_H__
+
+#include "arm_compute/graph2/nodes/ActivationLayerNode.h"
+#include "arm_compute/graph2/nodes/BatchNormalizationLayerNode.h"
+#include "arm_compute/graph2/nodes/ConstNode.h"
+#include "arm_compute/graph2/nodes/ConvolutionLayerNode.h"
+#include "arm_compute/graph2/nodes/DepthConcatenateLayerNode.h"
+#include "arm_compute/graph2/nodes/DepthwiseConvolutionLayerNode.h"
+#include "arm_compute/graph2/nodes/EltwiseLayerNode.h"
+#include "arm_compute/graph2/nodes/FlattenLayerNode.h"
+#include "arm_compute/graph2/nodes/FullyConnectedLayerNode.h"
+#include "arm_compute/graph2/nodes/InputNode.h"
+#include "arm_compute/graph2/nodes/NormalizationLayerNode.h"
+#include "arm_compute/graph2/nodes/OutputNode.h"
+#include "arm_compute/graph2/nodes/PoolingLayerNode.h"
+#include "arm_compute/graph2/nodes/ReshapeLayerNode.h"
+#include "arm_compute/graph2/nodes/SoftmaxLayerNode.h"
+
+#endif /* __ARM_COMPUTE_GRAPH2_NODES_H__ */
diff --git a/arm_compute/graph2/nodes/NodesFwd.h b/arm_compute/graph2/nodes/NodesFwd.h
new file mode 100644
index 0000000000..03ca65e056
--- /dev/null
+++ b/arm_compute/graph2/nodes/NodesFwd.h
@@ -0,0 +1,50 @@
+/*
+ * 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, 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_GRAPH2_NODES_FWD_H__
+#define __ARM_COMPUTE_GRAPH2_NODES_FWD_H__
+
+namespace arm_compute
+{
+namespace graph2
+{
+// Forward declarations
+class INode;
+class ActivationLayerNode;
+class BatchNormalizationLayerNode;
+class ConstNode;
+class ConvolutionLayerNode;
+class DepthConcatenateLayerNode;
+class DepthwiseConvolutionLayerNode;
+class EltwiseLayerNode;
+class FlattenLayerNode;
+class FullyConnectedLayerNode;
+class InputNode;
+class NormalizationLayerNode;
+class OutputNode;
+class PoolingLayerNode;
+class ReshapeLayerNode;
+class SoftmaxLayerNode;
+} // namespace graph2
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_GRAPH2_NODES_FWD_H__ */
diff --git a/arm_compute/graph2/nodes/NormalizationLayerNode.h b/arm_compute/graph2/nodes/NormalizationLayerNode.h
new file mode 100644
index 0000000000..e2816e9352
--- /dev/null
+++ b/arm_compute/graph2/nodes/NormalizationLayerNode.h
@@ -0,0 +1,59 @@
+/*
+ * 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, 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_GRAPH2_NORMALIZATION_LAYER_NODE_H__
+#define __ARM_COMPUTE_GRAPH2_NORMALIZATION_LAYER_NODE_H__
+
+#include "arm_compute/graph2/INode.h"
+
+namespace arm_compute
+{
+namespace graph2
+{
+class NormalizationLayerNode final : public INode
+{
+public:
+    /** Constructor
+     *
+     * @param[in] norm_info Normalization Layer information
+     */
+    NormalizationLayerNode(NormalizationLayerInfo norm_info);
+    /** Normalization info accessor
+     *
+     * @return Normalization layer info
+     */
+    NormalizationLayerInfo normalization_info() const;
+
+    // Inherited overridden methods:
+    Status           validate() override;
+    NodeType         type() const override;
+    bool             forward_descriptors() override;
+    TensorDescriptor configure_output(size_t idx) const override;
+    void accept(INodeVisitor &v) override;
+
+private:
+    NormalizationLayerInfo _info;
+};
+} // namespace graph2
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_GRAPH2_NORMALIZATION_LAYER_NODE_H__ */
diff --git a/arm_compute/graph2/nodes/OutputNode.h b/arm_compute/graph2/nodes/OutputNode.h
new file mode 100644
index 0000000000..94df382d22
--- /dev/null
+++ b/arm_compute/graph2/nodes/OutputNode.h
@@ -0,0 +1,48 @@
+/*
+ * 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, 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_GRAPH2_OUTPUT_NODE_H__
+#define __ARM_COMPUTE_GRAPH2_OUTPUT_NODE_H__
+
+#include "arm_compute/graph2/INode.h"
+
+namespace arm_compute
+{
+namespace graph2
+{
+class OutputNode final : public INode
+{
+public:
+    /** Default Constructor */
+    OutputNode();
+
+    // Inherited overridden methods:
+    Status           validate() override;
+    NodeType         type() const override;
+    bool             forward_descriptors() override;
+    TensorDescriptor configure_output(size_t idx) const override;
+    void accept(INodeVisitor &v) override;
+};
+} // namespace graph2
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_GRAPH2_OUTPUT_NODE_H__ */
diff --git a/arm_compute/graph2/nodes/PoolingLayerNode.h b/arm_compute/graph2/nodes/PoolingLayerNode.h
new file mode 100644
index 0000000000..b0c6270999
--- /dev/null
+++ b/arm_compute/graph2/nodes/PoolingLayerNode.h
@@ -0,0 +1,67 @@
+/*
+ * 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, 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_GRAPH2_POOLING_LAYER_NODE_H__
+#define __ARM_COMPUTE_GRAPH2_POOLING_LAYER_NODE_H__
+
+#include "arm_compute/graph2/INode.h"
+
+namespace arm_compute
+{
+namespace graph2
+{
+class PoolingLayerNode final : public INode
+{
+public:
+    /** Constructor
+     *
+     * @param[in] pool_info Pooling Layer information
+     */
+    PoolingLayerNode(PoolingLayerInfo pool_info);
+    /** Pooling metadata accessor
+     *
+     * @return Pooling Layer info
+     */
+    PoolingLayerInfo pooling_info() const;
+    /** Computes pooling output shape
+     *
+     * @param[in] input_shape Input shape
+     * @param[in] info        Pooling operation attributes
+     *
+     * @return Output shape
+     */
+    static TensorShape compute_output_shape(TensorShape input_shape, PoolingLayerInfo info);
+
+    // Inherited overridden methods:
+    Status           validate() override;
+    NodeType         type() const override;
+    bool             forward_descriptors() override;
+    TensorDescriptor configure_output(size_t idx) const override;
+    void accept(INodeVisitor &v) override;
+
+private:
+    PoolingLayerInfo _info;
+};
+} // namespace graph2
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_GRAPH2_POOLING_LAYER_NODE_H__ */
diff --git a/arm_compute/graph2/nodes/ReshapeLayerNode.h b/arm_compute/graph2/nodes/ReshapeLayerNode.h
new file mode 100644
index 0000000000..89ee46c8e1
--- /dev/null
+++ b/arm_compute/graph2/nodes/ReshapeLayerNode.h
@@ -0,0 +1,54 @@
+/*
+ * 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, 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_GRAPH2_RESHAPE_LAYER_NODE_H__
+#define __ARM_COMPUTE_GRAPH2_RESHAPE_LAYER_NODE_H__
+
+#include "arm_compute/graph2/INode.h"
+
+namespace arm_compute
+{
+namespace graph2
+{
+class ReshapeLayerNode final : public INode
+{
+public:
+    /** Constructor
+     *
+     * @param[in] shape Reshaped tensor shape
+     */
+    ReshapeLayerNode(TensorShape shape);
+
+    // Inherited overridden methods:
+    Status           validate() override;
+    NodeType         type() const override;
+    bool             forward_descriptors() override;
+    TensorDescriptor configure_output(size_t idx) const override;
+    void accept(INodeVisitor &v) override;
+
+private:
+    TensorShape _shape;
+};
+} // namespace graph2
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_GRAPH2_RESHAPE_LAYER_NODE_H__ */
diff --git a/arm_compute/graph2/nodes/SoftmaxLayerNode.h b/arm_compute/graph2/nodes/SoftmaxLayerNode.h
new file mode 100644
index 0000000000..86decb80d9
--- /dev/null
+++ b/arm_compute/graph2/nodes/SoftmaxLayerNode.h
@@ -0,0 +1,59 @@
+/*
+ * 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, 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_GRAPH2_SOFTMAX_LAYER_NODE_H__
+#define __ARM_COMPUTE_GRAPH2_SOFTMAX_LAYER_NODE_H__
+
+#include "arm_compute/graph2/INode.h"
+
+namespace arm_compute
+{
+namespace graph2
+{
+class SoftmaxLayerNode final : public INode
+{
+public:
+    /** Constructor
+     *
+     * @param[in] beta (Optional) Beta parameter. Defaults to 1
+     */
+    SoftmaxLayerNode(float beta = 1.f);
+    /** Beta parameter accessor
+     *
+     * @return Beta parameter
+     */
+    float beta() const;
+
+    // Inherited overridden methods:
+    Status           validate() override;
+    NodeType         type() const override;
+    bool             forward_descriptors() override;
+    TensorDescriptor configure_output(size_t idx) const override;
+    void accept(INodeVisitor &v) override;
+
+private:
+    float _beta;
+};
+} // namespace graph2
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_GRAPH2_SOFTMAX_LAYER_NODE_H__ */