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//
// Copyright © 2017 Arm Ltd. All rights reserved.
// SPDX-License-Identifier: MIT
//
#include <armnn/backends/IBackendInternal.hpp>
namespace armnn
{
ARMNN_NO_DEPRECATE_WARN_BEGIN
IBackendInternal::ISubGraphConverterPtr IBackendInternal::CreateSubGraphConverter(
const std::shared_ptr<SubGraph>& /*subGrapg*/) const
{
return ISubGraphConverterPtr{};
}
IBackendInternal::Optimizations IBackendInternal::GetOptimizations() const
{
return Optimizations{};
}
IBackendInternal::SubGraphUniquePtr IBackendInternal::OptimizeSubGraph(const SubGraph& /*subGraph*/,
bool& optimizationAttempted) const
{
optimizationAttempted = false;
return nullptr;
}
ARMNN_NO_DEPRECATE_WARN_END
IMemoryManagerUniquePtr IBackendInternal::CreateMemoryManager() const
{
return IMemoryManagerUniquePtr();
}
IBackendInternal::IWorkloadFactoryPtr IBackendInternal::CreateWorkloadFactory(
class TensorHandleFactoryRegistry& /*tensorHandleFactoryRegistry*/) const
{
return IWorkloadFactoryPtr{};
}
IBackendInternal::IBackendContextPtr IBackendInternal::CreateBackendContext(const IRuntime::CreationOptions&) const
{
return IBackendContextPtr{};
}
IBackendInternal::IBackendProfilingContextPtr IBackendInternal::CreateBackendProfilingContext(
const IRuntime::CreationOptions&, armnn::profiling::IBackendProfiling&) const
{
return IBackendProfilingContextPtr{};
}
// Default implementation of OptimizeSubgraphView for backward compatibility with the old API.
// Override this method with a custom optimization implementation.
OptimizationViews IBackendInternal::OptimizeSubgraphView(const SubgraphView& subgraph) const
{
bool optimizationAttempted = false;
ARMNN_NO_DEPRECATE_WARN_BEGIN
SubGraphUniquePtr optSubgraph = OptimizeSubGraph(subgraph, optimizationAttempted);
ARMNN_NO_DEPRECATE_WARN_END
OptimizationViews result;
if (!optimizationAttempted)
{
result.AddUntouchedSubgraph(SubgraphView(subgraph));
}
else if (optSubgraph)
{
result.AddSubstitution({subgraph, SubgraphView(*optSubgraph.get())});
}
else
{
result.AddFailedSubgraph(SubgraphView(subgraph));
}
return result;
}
bool IBackendInternal::SupportsTensorAllocatorAPI() const
{
return !GetHandleFactoryPreferences().empty();
}
ITensorHandleFactory::FactoryId IBackendInternal::GetBackwardCompatibleFavoriteHandleFactory()
{
auto favorites = GetHandleFactoryPreferences();
if (favorites.empty())
{
return ITensorHandleFactory::LegacyFactoryId;
}
return favorites[0];
}
std::vector<ITensorHandleFactory::FactoryId> IBackendInternal::GetHandleFactoryPreferences() const
{
return std::vector<ITensorHandleFactory::FactoryId>();
}
} // namespace armnn
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