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author | narpra01 <narumol.prangnawarat@arm.com> | 2019-01-18 16:53:53 +0000 |
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committer | Narumol Prangnawarat <narumol.prangnawarat@arm.com> | 2019-01-22 17:46:51 +0000 |
commit | 4951d84b1174a4bb0a5d9c900740f64201f765bf (patch) | |
tree | fe713740ac0acbaa8d74bbc9cdb450d08ef9f575 /src/backends/reference/workloads/Gather.cpp | |
parent | 0edd46737065d3e5c09aa959807e81f9836ee709 (diff) | |
download | armnn-4951d84b1174a4bb0a5d9c900740f64201f765bf.tar.gz |
IVGCVSW-2510 Ref workload implementation for Gather operator
* add implemenentation for GatherQueueDescriptor validate function
* add FirstInputTypedWorkload to allow type check on the first input tensor only
* add ref workload implemenentation for float and uint8
* add Gather layer support in Ref
* unit tests
Change-Id: I4578a3211f11d24aa29d15bcf7f45b0445bcd1ee
Diffstat (limited to 'src/backends/reference/workloads/Gather.cpp')
-rw-r--r-- | src/backends/reference/workloads/Gather.cpp | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/backends/reference/workloads/Gather.cpp b/src/backends/reference/workloads/Gather.cpp new file mode 100644 index 0000000000..b195003e04 --- /dev/null +++ b/src/backends/reference/workloads/Gather.cpp @@ -0,0 +1,64 @@ +// +// Copyright © 2017 Arm Ltd. All rights reserved. +// SPDX-License-Identifier: MIT +// + +#include "Gather.hpp" + +#include "RefWorkloadUtils.hpp" + +#include <backendsCommon/WorkloadData.hpp> + +namespace armnn +{ + +template <typename T> +void Gather(const TensorInfo& paramsInfo, + const TensorInfo& indicesInfo, + const TensorInfo& outputInfo, + const T* params, + const int32_t* indices, + T* output) +{ + const TensorShape& paramsShape = paramsInfo.GetShape(); + + unsigned int paramsProduct = 1; + for (unsigned int i = 1; i < paramsInfo.GetNumDimensions(); ++i) + { + paramsProduct = paramsProduct * paramsShape[i]; + } + + unsigned int outIndex = 0; + for (unsigned int i = 0; i < indicesInfo.GetNumElements(); ++i) + { + unsigned int indx = boost::numeric_cast<unsigned int>(indices[i]); + + BOOST_ASSERT(indices[i] >= 0 && indx < paramsShape[0]); + + unsigned int startOffset = indx * paramsProduct; + unsigned int endOffset = startOffset + paramsProduct; + for (unsigned int j = startOffset; j < endOffset; ++j) + { + output[outIndex] = params[j]; + ++outIndex; + } + } + + BOOST_ASSERT(outIndex == outputInfo.GetNumElements()); +} + +template void Gather<float>(const TensorInfo& paramsInfo, + const TensorInfo& indicesInfo, + const TensorInfo& outputInfo, + const float* params, + const int32_t* indices, + float* output); + +template void Gather<uint8_t>(const TensorInfo& paramsInfo, + const TensorInfo& indicesInfo, + const TensorInfo& outputInfo, + const uint8_t* params, + const int32_t* indices, + uint8_t* output); + +} //namespace armnn |