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update of g3doc/includes/tf_passes.md

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A. Unique TensorFlower 2021-01-28 18:23:50 -08:00 committed by TensorFlower Gardener
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tensorflow/compiler/mlir/g3doc/includes/tf_passes.md
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@ -108,6 +108,9 @@ op. The order of ops will be preserved. Functions named `main` with no
have been imported from a V1 TensorFlow graph, where feeds/fetches/targets are have been imported from a V1 TensorFlow graph, where feeds/fetches/targets are
not provided at certain stages of IR transformation (e.g. pre-placement). not provided at certain stages of IR transformation (e.g. pre-placement).
Option `ops-to-preserve` allows to specify ops that should not be pruned,
regardless of their reachability.
For example, the following: For example, the following:
```mlir ```mlir
@ -139,6 +142,11 @@ func @graph(%arg0: tensor<i32>, %arg1: tensor<i32>) -> tensor<i32> {
return %graph : tensor<i32> return %graph : tensor<i32>
} }
``` ```
#### Options
```
-ops-to-preserve : Comma separated list of ops that should not be pruned regardless of reachability
```
### `-tf-executor-to-functional-conversion`: Lifts tf_executor.island inner ops from a tf_executor.graph ### `-tf-executor-to-functional-conversion`: Lifts tf_executor.island inner ops from a tf_executor.graph
This pass converts tf_executor.graphs consisting of only tf_executor.islands and This pass converts tf_executor.graphs consisting of only tf_executor.islands and
a tf_executor.fetch into a sea of nodes consisting of TensorFlow Dialect ops by a tf_executor.fetch into a sea of nodes consisting of TensorFlow Dialect ops by