IVGCVSW-7342 Add Slice support to TOSA Reference Backend
Signed-off-by: Cathal Corbett <cathal.corbett@arm.com>
Change-Id: I8be286b69bebd4cd36033e3145632bb043938d16
diff --git a/src/backends/tosaCommon/operatorMappings/CMakeLists.txt b/src/backends/tosaCommon/operatorMappings/CMakeLists.txt
index 7733d01..cb1d68e 100644
--- a/src/backends/tosaCommon/operatorMappings/CMakeLists.txt
+++ b/src/backends/tosaCommon/operatorMappings/CMakeLists.txt
@@ -16,6 +16,8 @@
Pooling2DOperator.cpp
ReshapeOperator.hpp
ReshapeOperator.cpp
+ SliceOperator.hpp
+ SliceOperator.cpp
TosaOperatorUtils.hpp
)
diff --git a/src/backends/tosaCommon/operatorMappings/SliceOperator.cpp b/src/backends/tosaCommon/operatorMappings/SliceOperator.cpp
new file mode 100644
index 0000000..fc2e40a
--- /dev/null
+++ b/src/backends/tosaCommon/operatorMappings/SliceOperator.cpp
@@ -0,0 +1,57 @@
+//
+// Copyright © 2022 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include "SliceOperator.hpp"
+
+TosaSerializationBasicBlock* ConvertSliceToTosaOperator(const Layer* layer,
+ const std::vector<const TensorInfo*>& inputs,
+ const std::vector<const TensorInfo*>& outputs,
+ const SliceDescriptor* sliceDescriptor)
+{
+ std::string inputName = std::string("input0_");
+ std::string outputName = std::string("output0_");
+ std::string blockName = std::string("Op_SLICE_block_") + GetUniqueTosaMappingID();
+
+ // If a layer is present then the block will be used for execution, so input and output names need to be determined
+ // using the previous and following layers so the graph is connected correctly. For validation this doesn't matter.
+ if(layer != nullptr)
+ {
+ // Get the layers connected to the input slots and determine unique layer names.
+ Layer& connectedLayer = layer->GetInputSlot(0).GetConnectedOutputSlot()->GetOwningLayer();
+ inputName = GenerateUniqueName(connectedLayer, 0);
+
+ // Get the layer connected to the output slot and determine unique layer name.
+ Layer& connectedOutputLayer = layer->GetOutputSlot().GetConnection(0)->GetOwningLayer();
+ outputName = GenerateUniqueName(connectedOutputLayer, 0);
+ }
+
+ std::vector<int32_t> begin(sliceDescriptor->m_Begin.begin(), sliceDescriptor->m_Begin.end());
+ std::vector<int32_t> size(sliceDescriptor->m_Size.begin(), sliceDescriptor->m_Size.end());
+
+ TosaSliceAttribute attribute(begin, size);
+
+ auto* op = new TosaSerializationOperator(Op_SLICE,
+ Attribute_SliceAttribute,
+ &attribute,
+ {inputName},
+ {outputName});
+
+ std::vector<int32_t> inputShape = GetTosaTensorShape(inputs[0]->GetShape());
+ DType inputDType = ArmNNToDType(inputs[0]->GetDataType());
+
+ std::vector<int32_t> outputShape = GetTosaTensorShape(outputs[0]->GetShape());
+ DType outputDType = ArmNNToDType(outputs[0]->GetDataType());
+
+ auto* inputTensor = new TosaSerializationTensor(inputName, inputShape, inputDType, {});
+ auto* outputTensor = new TosaSerializationTensor(outputName, outputShape, outputDType, {});
+
+ // operatorInputNames/operatorOutputNames ends up being the same as
+ // blockInputNames/blockOutputNames for one-to-one ArmNN to TOSA mappings
+ return new TosaSerializationBasicBlock(blockName, // name
+ {op}, // operators
+ {inputTensor, outputTensor}, // tensors
+ {inputName}, // inputs
+ {outputName}); // outputs
+}
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diff --git a/src/backends/tosaCommon/operatorMappings/SliceOperator.hpp b/src/backends/tosaCommon/operatorMappings/SliceOperator.hpp
new file mode 100644
index 0000000..127cc81
--- /dev/null
+++ b/src/backends/tosaCommon/operatorMappings/SliceOperator.hpp
@@ -0,0 +1,20 @@
+//
+// Copyright © 2022 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#pragma once
+
+#include "TosaOperatorUtils.hpp"
+
+#include <Layer.hpp>
+
+#include <tosa_serialization_handler.h>
+
+using namespace armnn;
+using namespace tosa;
+
+TosaSerializationBasicBlock* ConvertSliceToTosaOperator(const Layer* layer,
+ const std::vector<const TensorInfo*>& inputs,
+ const std::vector<const TensorInfo*>& outputs,
+ const SliceDescriptor* sliceDescriptor);
\ No newline at end of file
diff --git a/src/backends/tosaCommon/operatorMappings/TosaCommonOperators.hpp b/src/backends/tosaCommon/operatorMappings/TosaCommonOperators.hpp
index 0711095..a3597f0 100644
--- a/src/backends/tosaCommon/operatorMappings/TosaCommonOperators.hpp
+++ b/src/backends/tosaCommon/operatorMappings/TosaCommonOperators.hpp
@@ -10,4 +10,5 @@
#include "Conv2dOperator.hpp"
#include "AvgPool2DIgnoreValueOperator.hpp"
#include "Pooling2DOperator.hpp"
-#include "ReshapeOperator.hpp"
\ No newline at end of file
+#include "ReshapeOperator.hpp"
+#include "SliceOperator.hpp"
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