IVGCVSW-7525 Add broadcast_to operator

Signed-off-by: Idriss Chaouch <idriss.chaouch@arm.com>
Signed-off-by: Narumol Prangnawarat <narumol.prangnawarat@arm.com>
Change-Id: I94ec5f9120b2d736fdf98d00ec5137a4efd739b8

6 files changed, 40 insertions, 1 deletions

diff --git a/include/armnn/BackendHelper.hpp b/include/armnn/BackendHelper.hpp
index 986f854636..b61f010b0f 100644
--- a/include/armnn/BackendHelper.hpp
+++ b/include/armnn/BackendHelper.hpp
@@ -73,6 +73,12 @@ public:
                                    const BatchToSpaceNdDescriptor& descriptor,
                                    Optional<std::string&> reasonIfUnsupported = EmptyOptional());
 
+
+    bool IsBroadcastToSupported(const TensorInfo& input,
+                                const TensorInfo& output,
+                                const BroadcastToDescriptor& descriptor,
+                                Optional<std::string&> reasonIfUnsupported);
+
     bool IsCastSupported(const TensorInfo& input,
                          const TensorInfo& output,
                          Optional<std::string&> reasonIfUnsupported = EmptyOptional());
diff --git a/include/armnn/Descriptors.hpp b/include/armnn/Descriptors.hpp
index 30eaefd83b..bf40b35ae9 100644
--- a/include/armnn/Descriptors.hpp
+++ b/include/armnn/Descriptors.hpp
@@ -1656,4 +1656,23 @@ struct TileDescriptor : BaseDescriptor
     std::vector<uint32_t> m_Multiples;
 };
 
+struct BroadcastToDescriptor : BaseDescriptor
+{
+    BroadcastToDescriptor()
+        : m_BroadcastToShape()
+    {}
+
+    explicit BroadcastToDescriptor(const TensorShape& shape)
+        : m_BroadcastToShape(shape)
+    {}
+
+    bool operator ==(const BroadcastToDescriptor& rhs) const
+    {
+        return m_BroadcastToShape == rhs.m_BroadcastToShape;
+    }
+
+    /// Target shape value.
+    TensorShape m_BroadcastToShape;
+};
+
 } // namespace armnn
diff --git a/include/armnn/DescriptorsFwd.hpp b/include/armnn/DescriptorsFwd.hpp
index 4b9a3e5060..4b0b70c2d3 100644
--- a/include/armnn/DescriptorsFwd.hpp
+++ b/include/armnn/DescriptorsFwd.hpp
@@ -14,6 +14,7 @@ struct ArgMinMaxDescriptor;
 struct BatchMatMulDescriptor;
 struct BatchNormalizationDescriptor;
 struct BatchToSpaceNdDescriptor;
+struct BroadcastToDescriptor;
 struct ChannelShuffleDescriptor;
 struct ComparisonDescriptor;
 struct Convolution2dDescriptor;
diff --git a/include/armnn/INetwork.hpp b/include/armnn/INetwork.hpp
index c2c76e3d97..64fdab6bd0 100644
--- a/include/armnn/INetwork.hpp
+++ b/include/armnn/INetwork.hpp
@@ -857,6 +857,13 @@ public:
     IConnectableLayer* AddTileLayer(const TileDescriptor& descriptor,
                                     const char* name = nullptr);
 
+    /// Add a BroadcastTo layer to the network
+    /// @param descriptor - Parameters for the BroadcastTo operation
+    /// @param name - Optional name for the layer
+    /// @return - Interface for configuring the layer
+    IConnectableLayer* AddBroadcastToLayer(const BroadcastToDescriptor& descriptor,
+                                           const char* name = nullptr);
+
     void ExecuteStrategy(IStrategy& strategy) const;
 
 protected:
diff --git a/include/armnn/Types.hpp b/include/armnn/Types.hpp
index 7cb3a859c7..933e7da412 100644
--- a/include/armnn/Types.hpp
+++ b/include/armnn/Types.hpp
@@ -481,6 +481,7 @@ using InferenceTimingPair = std::pair<HighResolutionClock, HighResolutionClock>;
     X(ReverseV2) \
     X(Tile) \
     X(Fused) \
+    X(BroadcastTo) \
 
 // New layers should be added at last position to minimize instability.
 
@@ -492,7 +493,7 @@ enum class LayerType
     LIST_OF_LAYER_TYPE
 #undef X
     FirstLayer = Activation,
-    LastLayer = Fused
+    LastLayer = BroadcastTo
 };
 
 const char* GetLayerTypeAsCString(LayerType type);
diff --git a/include/armnn/backends/WorkloadData.hpp b/include/armnn/backends/WorkloadData.hpp
index 86796cbcc0..a90a1abd65 100644
--- a/include/armnn/backends/WorkloadData.hpp
+++ b/include/armnn/backends/WorkloadData.hpp
@@ -765,4 +765,9 @@ struct TileQueueDescriptor : QueueDescriptorWithParameters<TileDescriptor>
     void Validate(const WorkloadInfo& workloadInfo) const;
 };
 
+struct BroadcastToQueueDescriptor : QueueDescriptorWithParameters<BroadcastToDescriptor>
+{
+    void Validate(const WorkloadInfo& workloadInfo) const;
+};
+
 } // namespace armnn