1 /* Copyright 2020 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 // This pass identifies patterns for certain Einsum Ops and replaces them 16 // with other equivalent TF Ops. 17 18 #ifndef TENSORFLOW_COMPILER_MLIR_TENSORFLOW_TRANSFORMS_EINSUM_H_ 19 #define TENSORFLOW_COMPILER_MLIR_TENSORFLOW_TRANSFORMS_EINSUM_H_ 20 21 #include <cstdint> 22 #include <initializer_list> 23 24 #include "llvm/ADT/ArrayRef.h" 25 #include "llvm/Support/Casting.h" 26 #include "mlir/IR/Attributes.h" // from @llvm-project 27 #include "mlir/IR/BuiltinTypes.h" // from @llvm-project 28 #include "mlir/IR/Location.h" // from @llvm-project 29 #include "mlir/IR/MLIRContext.h" // from @llvm-project 30 #include "mlir/IR/Matchers.h" // from @llvm-project 31 #include "mlir/IR/PatternMatch.h" // from @llvm-project 32 #include "mlir/IR/TypeUtilities.h" // from @llvm-project 33 #include "mlir/Pass/Pass.h" // from @llvm-project 34 #include "tensorflow/compiler/mlir/tensorflow/ir/tf_ops.h" 35 #include "tensorflow/core/util/matmul_bcast.h" 36 37 namespace mlir { 38 namespace TF { 39 40 // TF.Einsum provides fully general tensor contractions. For a few select 41 // cases, we can convert this op to other TF Ops, which in later passes 42 // properly convert to TF Lite ops. 43 struct ConvertTFEinsumOp : public OpRewritePattern<TF::EinsumOp> { 44 public: ConvertTFEinsumOpConvertTFEinsumOp45 explicit ConvertTFEinsumOp(MLIRContext* context) 46 : OpRewritePattern<TF::EinsumOp>(context) {} 47 48 LogicalResult matchAndRewrite(TF::EinsumOp op, 49 PatternRewriter& rewriter) const override; 50 }; 51 52 } // namespace TF 53 } // namespace mlir 54 55 #endif // TENSORFLOW_COMPILER_MLIR_TENSORFLOW_TRANSFORMS_EINSUM_H_ 56