4e0d3b117d
For the MLIR-based TPU bridge, functionalization runs before TPU cluster extraction as part of the graph-to-MLIR conversion. This was problematic because previously also non-TPU-nodes were functionalized at this stage which caused issues in the TF v1 session runtime that assumes certain nodes are left unchanged. This change adds the capability to restrict functionalization to certain loops and conditions, according to a user-defined node filter, which can be used to fix the above issues (there will be a separate CL for this). PiperOrigin-RevId: 318846935 Change-Id: I36078909c6091de083ffa5d57cdf63eca5f844ef
40 lines
1.6 KiB
C++
40 lines
1.6 KiB
C++
/* Copyright 2017 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_FUNCTIONALIZE_WHILE_H_
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#define TENSORFLOW_COMPILER_TF2XLA_FUNCTIONALIZE_WHILE_H_
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#include "tensorflow/compiler/tf2xla/functionalize_control_flow_util.h"
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#include "tensorflow/core/framework/function.h"
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#include "tensorflow/core/graph/graph.h"
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namespace tensorflow {
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// Transformation that converts tf.while_loop() loops into functional While
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// operators, suitable for XLA compilation. If lookup_library is provided, use
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// it to make the library for control flow self-contained.
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//
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// If `node_filter` is defined, then only loops for whose nodes `node_filter`
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// returns true are functionalized.
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//
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// Preconditions:
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// Same as for `FunctionalizeControlFlow` (see comment there).
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Status FunctionalizeWhileLoop(Graph* graph, FunctionLibraryDefinition* library,
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const NodeFilter& node_filter = {});
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} // namespace tensorflow
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#endif // TENSORFLOW_COMPILER_TF2XLA_FUNCTIONALIZE_WHILE_H_
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