wehub-resource-sync
57 lines
2.2 KiB
C++
57 lines
2.2 KiB
C++
/* Copyright 2018 The TensorFlow Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==============================================================================*/
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#ifndef TENSORFLOW_COMPILER_TF2XLA_LIB_SCATTER_H_
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#define TENSORFLOW_COMPILER_TF2XLA_LIB_SCATTER_H_
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#include <functional>
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#include "absl/status/statusor.h"
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#include "xla/hlo/builder/xla_builder.h"
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#include "xla/hlo/builder/xla_computation.h"
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#include "tensorflow/core/platform/statusor.h"
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namespace tensorflow {
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// Builds an XLA computation that performs a scatter operation on `buffer`,
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// returning an updated buffer.
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// For each i0, i1, ..., sets
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// buffer[indices[i0, i1, ...], ...] := updates[i0, i1, ...]
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//
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// If `indices_are_vectors` is false, then each index in indices is a scalar,
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// and the shape of `indices` must be a prefix of the shape of updates.
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// Otherwise, `indices_are_vectors`, then indices are multidimensional and the
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// minor dimension of `indices` represents a vector of indices.
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//
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// If `updates` is a scalar, then it will be broadcasted into the expected shape
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// of updates.
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//
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// If any part of the update region is out-of-bounds, the corresponding update
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// is discarded.
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//
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// If a `combiner` is provided, updates are combined with the existing values in
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// the buffer using the combiner function. Otherwise, the updates replace the
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// existing values. The order of updates is implementation-defined.
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absl::StatusOr<xla::XlaOp> XlaScatter(
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xla::XlaOp buffer, xla::XlaOp updates, xla::XlaOp indices,
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bool indices_are_vectors, bool indices_are_sorted,
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const std::function<xla::XlaOp(xla::XlaOp, xla::XlaOp, xla::XlaBuilder*)>&
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combiner,
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xla::XlaBuilder* builder);
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} // namespace tensorflow
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#endif // TENSORFLOW_COMPILER_TF2XLA_LIB_SCATTER_H_
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