From 5c54c3874ff5dc1656b9f28288e46086586f21b9 Mon Sep 17 00:00:00 2001
From: Matthew Sloyan <matthew.sloyan@arm.com>
Date: Wed, 9 Nov 2022 16:28:51 +0000
Subject: IVGCVSW-7165 Implement TosaRefPreCompiledWorkload::Execute()

 * Added FP32 support for TOSA Reference Backend.
 * Added main block creation to OptimizeSubgraphView, this will only
   occur once.

Change-Id: I169dac50b78e2c693da6327962c9f1d3ae3bd712
Signed-off-by: James Conroy <james.conroy@arm.com>
Signed-off-by: Matthew Sloyan <matthew.sloyan@arm.com>
---
 .../workloads/TosaRefPreCompiledWorkload.cpp       | 82 +++++++++++++++++++++-
 1 file changed, 80 insertions(+), 2 deletions(-)

(limited to 'src/backends/tosaReference/workloads/TosaRefPreCompiledWorkload.cpp')

diff --git a/src/backends/tosaReference/workloads/TosaRefPreCompiledWorkload.cpp b/src/backends/tosaReference/workloads/TosaRefPreCompiledWorkload.cpp
index c4af4d40b1..18d2900eff 100644
--- a/src/backends/tosaReference/workloads/TosaRefPreCompiledWorkload.cpp
+++ b/src/backends/tosaReference/workloads/TosaRefPreCompiledWorkload.cpp
@@ -11,13 +11,91 @@ namespace armnn
 TosaRefPreCompiledWorkload::TosaRefPreCompiledWorkload(const PreCompiledQueueDescriptor& descriptor,
                                                        const WorkloadInfo& info)
     : BaseWorkload<PreCompiledQueueDescriptor>(descriptor, info)
+    , m_workloadInfo(info)
 {
-    // Do nothing for now
+    // Check that the workload is holding a pointer to a valid pre-compiled object
+    if (m_Data.m_PreCompiledObject == nullptr)
+    {
+        throw InvalidArgumentException(
+                "TosaRefPreCompiledWorkload requires a valid pre-compiled object (TosaSerializationHandler).");
+    }
 }
 
 void TosaRefPreCompiledWorkload::Execute() const
 {
-    // Do nothing for now
+    uint32_t numInputBuffers  = static_cast<uint32_t>(m_Data.m_Inputs.size());
+    uint32_t numOutputBuffers = static_cast<uint32_t>(m_Data.m_Outputs.size());
+
+    tosa::TosaSerializationHandler* handler = static_cast<tosa::TosaSerializationHandler*>(m_Data.m_PreCompiledObject);
+
+    std::vector<std::string> input_names = handler->GetInputs();
+    std::vector<std::string> output_names = handler->GetOutputs();
+
+    TosaReference::IModelRunner runner;
+    GraphStatus status;
+
+    // Initialise the model runner with the TosaSerializationHandler
+    status = runner.initialize(*handler);
+    if(status != GraphStatus::TOSA_VALID)
+    {
+        throw armnn::Exception("An error has occurred while initialising the TOSA Reference Model.");
+    }
+
+    // Set the inputs
+    for (uint32_t inputSlotIdx = 0; inputSlotIdx < numInputBuffers; ++inputSlotIdx)
+    {
+        DataType dataType = m_workloadInfo.m_InputTensorInfos[inputSlotIdx].GetDataType();
+        switch (dataType)
+        {
+            case DataType::Float32:
+                SetInput<float>(runner, input_names[inputSlotIdx], inputSlotIdx);
+                break;
+            default:
+                throw armnn::Exception("Input data type is unsupported in TOSA Reference Backend.");
+        }
+    }
+
+    // Run the TOSA Reference Model
+    status = runner.run();
+    if(status != GraphStatus::TOSA_VALID)
+    {
+        throw armnn::Exception("An error has occurred while running the TOSA Reference Model.");
+    }
+
+    // Gets the outputs
+    for (uint32_t outputSlotIdx = 0; outputSlotIdx < numOutputBuffers; ++outputSlotIdx)
+    {
+        DataType dataType = m_workloadInfo.m_OutputTensorInfos[outputSlotIdx].GetDataType();
+        switch (dataType)
+        {
+            case DataType::Float32:
+                GetOutput<float>(runner, output_names[outputSlotIdx], outputSlotIdx);
+                break;
+            default:
+                throw armnn::Exception("Output data type is unsupported in TOSA Reference Backend.");
+        }
+    }
+}
+
+template <typename T>
+void TosaRefPreCompiledWorkload::SetInput(TosaReference::IModelRunner& runner,
+                                          std::string inputName,
+                                          uint32_t inputIndex) const
+{
+    std::vector<T> inputData(m_Data.m_Inputs[inputIndex]->GetShape().GetNumElements());
+    m_Data.m_Inputs[inputIndex]->CopyOutTo(inputData.data());
+
+    runner.setInput<T>(inputName, inputData);
+}
+
+template <typename T>
+void TosaRefPreCompiledWorkload::GetOutput(TosaReference::IModelRunner& runner,
+                                           std::string outputName,
+                                           uint32_t outputIndex) const
+{
+    std::vector<T> actualOutputs = runner.getOutput<T>(outputName);
+
+    m_Data.m_Outputs[outputIndex]->CopyInFrom(actualOutputs.data());
 }
 
 bool TosaRefPreCompiledWorkloadValidate(std::string*)
-- 
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