1 /* Copyright 2022 The TensorFlow Authors. All Rights Reserved. 2 3 Licensed under the Apache License, Version 2.0 (the "License"); 4 you may not use this file except in compliance with the License. 5 You may obtain a copy of the License at 6 7 http://www.apache.org/licenses/LICENSE-2.0 8 9 Unless required by applicable law or agreed to in writing, software 10 distributed under the License is distributed on an "AS IS" BASIS, 11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 See the License for the specific language governing permissions and 13 limitations under the License. 14 ==============================================================================*/ 15 16 #include "tensorflow/core/transforms/legacy_call/pass.h" 17 18 #include <memory> 19 20 #include "mlir/IR/BuiltinAttributes.h" // from @llvm-project 21 #include "mlir/IR/MLIRContext.h" // from @llvm-project 22 #include "mlir/Pass/Pass.h" // from @llvm-project 23 #include "mlir/Support/LogicalResult.h" // from @llvm-project 24 #include "tensorflow/core/ir/interfaces.h" 25 #include "tensorflow/core/ir/ops.h" 26 #include "tensorflow/core/transforms/pass_detail.h" 27 28 namespace mlir { 29 namespace tfg { 30 namespace { 31 class LiftLegacyCallPass : public LiftLegacyCallBase<LiftLegacyCallPass> { 32 public: initialize(MLIRContext * context)33 LogicalResult initialize(MLIRContext *context) override { 34 tfg_legacy_call_id_ = StringAttr::get(context, "tfg.legacy_call"); 35 return success(); 36 } 37 runOnOperation()38 void runOnOperation() override { 39 FunctionTable table(getOperation()); 40 for (Operation &op : getOperation().getOps()) { 41 op.walk([&](Operation *op) { 42 if (op->hasTrait<OpTrait::IntrinsicOperation>() || 43 !table.IsLegacyCall(op)) 44 return; 45 46 op->setAttr(tfg_legacy_call_id_, 47 FlatSymbolRefAttr::get(&getContext(), 48 op->getName().stripDialect())); 49 }); 50 } 51 } 52 53 private: 54 // The cached identifier of the legacy call tag. 55 StringAttr tfg_legacy_call_id_; 56 }; 57 } // namespace CreateLiftLegacyCallPass()58std::unique_ptr<Pass> CreateLiftLegacyCallPass() { 59 return std::make_unique<LiftLegacyCallPass>(); 60 } 61 } // namespace tfg 62 } // namespace mlir 63