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Second invocation of the model pruner after all other optimizers removes too many nodes in some cases in TF 2.0 mode.

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PiperOrigin-RevId: 240180399
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A. Unique TensorFlower 2019-03-25 11:18:05 -07:00 committed by TensorFlower Gardener
parent e6ee14fb0e
commit 120cc36f0e
1 changed files with 0 additions and 4 deletions
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tensorflow/core/grappler/optimizers/meta_optimizer.cc
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@ -447,10 +447,6 @@ Status MetaOptimizer::OptimizeGraph(Cluster* cluster, const GrapplerItem& item,
optimization_results_.push_back(optimization_result);
if (is_optimized) {
// Run the model pruner again to clean things up.
if (!cfg_.disable_model_pruning() && model_pruner != nullptr) {
RUN_OPTIMIZER_OR_RETURN_IF_ERROR(model_pruner);
}
TF_RETURN_IF_ERROR(TopologicalSort(optimized_graph));
ReassignColocation(optimized_graph);
// Make sure that the optimizers preserved the graph version.