experiments/STT-tensorflow
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Add switch fold pass to tf_tfl_translate passes

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PiperOrigin-RevId: 267004531
This commit is contained in:
Jacques Pienaar 2019-09-03 13:49:23 -07:00 committed by TensorFlower Gardener
parent 30485bb7b9
commit 1479da3cb2
4 changed files with 14 additions and 3 deletions
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1
tensorflow/compiler/mlir/lite/BUILD
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@ -521,6 +521,7 @@ cc_library(
":tensorflow_lite_quantize", ":tensorflow_lite_quantize",
"//tensorflow/compiler/mlir/tensorflow", "//tensorflow/compiler/mlir/tensorflow",
"//tensorflow/compiler/mlir/tensorflow:error_util", "//tensorflow/compiler/mlir/tensorflow:error_util",
"//tensorflow/compiler/mlir/tensorflow:tensorflow_fold_switch",
"//tensorflow/compiler/mlir/tensorflow:tf_dialect_lib", "//tensorflow/compiler/mlir/tensorflow:tf_dialect_lib",
"//tensorflow/compiler/mlir/tensorflow:tf_dialect_passes", "//tensorflow/compiler/mlir/tensorflow:tf_dialect_passes",
"//tensorflow/compiler/mlir/tensorflow:translate_lib", "//tensorflow/compiler/mlir/tensorflow:translate_lib",

1
tensorflow/compiler/mlir/lite/tf_tfl_passes.cc
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@ -41,6 +41,7 @@ bool ShouldRunQuantizePasses(mlir::ModuleOp m) {
void AddTFToTFLConversionPasses(const mlir::TFL::PassConfig& pass_config, void AddTFToTFLConversionPasses(const mlir::TFL::PassConfig& pass_config,
mlir::PassManager* pass_manager) { mlir::PassManager* pass_manager) {
pass_manager->addPass(mlir::tf_executor::CreateSwitchFoldPass());
pass_manager->addPass(mlir::CreateTFExecutorToControlDialectConversion()); pass_manager->addPass(mlir::CreateTFExecutorToControlDialectConversion());
pass_manager->addPass(mlir::TFControlFlow::CreateRaiseTFControlFlowPass()); pass_manager->addPass(mlir::TFControlFlow::CreateRaiseTFControlFlowPass());
// Ophint extraction will happen after island extraction pass. // Ophint extraction will happen after island extraction pass.

12
tensorflow/compiler/mlir/tensorflow/transforms/fold_switch.cc
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@ -58,7 +58,7 @@ limitations under the License.
namespace mlir { namespace mlir {
namespace { namespace {
class SwitchFold : public mlir::FunctionPass<SwitchFold> { class SwitchFoldPass : public mlir::FunctionPass<SwitchFoldPass> {
public: public:
void runOnFunction() override; void runOnFunction() override;
}; };
@ -266,7 +266,7 @@ bool HasSendOrReceive(FuncOp function) {
.wasInterrupted(); .wasInterrupted();
} }
void SwitchFold::runOnFunction() { void SwitchFoldPass::runOnFunction() {
if (HasSendOrReceive(getFunction())) return; if (HasSendOrReceive(getFunction())) return;
DeadQueue queue; DeadQueue queue;
// Initialize dead queue with dead outputs of foldable SwitchOps. // Initialize dead queue with dead outputs of foldable SwitchOps.
@ -277,7 +277,13 @@ void SwitchFold::runOnFunction() {
if (failed(FoldMergeNodes(getFunction(), queue))) return signalPassFailure(); if (failed(FoldMergeNodes(getFunction(), queue))) return signalPassFailure();
} // namespace mlir } // namespace mlir
static PassRegistration<SwitchFold> pass( namespace tf_executor {
std::unique_ptr<FunctionPassBase> CreateSwitchFoldPass() {
return std::make_unique<SwitchFoldPass>();
}
} // namespace tf_executor
static PassRegistration<SwitchFoldPass> pass(
"tf-switch-fold", "Fold switch nodes with constant predicates"); "tf-switch-fold", "Fold switch nodes with constant predicates");
} // namespace mlir } // namespace mlir

3
tensorflow/compiler/mlir/tensorflow/transforms/passes.h
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@ -41,6 +41,9 @@ std::unique_ptr<FunctionPassBase> CreateRaiseTFControlFlowPass();
namespace tf_executor { namespace tf_executor {
class GraphOp; class GraphOp;
// Returns a pass that folds switch nodes with constant predicates.
std::unique_ptr<FunctionPassBase> CreateSwitchFoldPass();
// Create a pass to merge IslandOps from TFExecutor dialect. // Create a pass to merge IslandOps from TFExecutor dialect.
std::unique_ptr<FunctionPassBase> CreateTFExecutorIslandCoarseningPass(); std::unique_ptr<FunctionPassBase> CreateTFExecutorIslandCoarseningPass();