tensorflow/compiler/mlir/xla/hlo_module_importer.cc

/* Copyright 2019 The TensorFlow Authors. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/

#include "tensorflow/compiler/mlir/xla/hlo_module_importer.h"

#include "mlir/Dialect/StandardOps/IR/Ops.h"  // from @llvm-project
#include "mlir/IR/Attributes.h"  // from @llvm-project
#include "mlir/IR/BuiltinTypes.h"  // from @llvm-project
#include "mlir/IR/Location.h"  // from @llvm-project
#include "mlir/IR/OperationSupport.h"  // from @llvm-project
#include "mlir/IR/Types.h"  // from @llvm-project
#include "tensorflow/compiler/mlir/hlo/include/mlir-hlo/Dialect/mhlo/IR/hlo_ops.h"
#include "tensorflow/compiler/mlir/xla/hlo_function_importer.h"
#include "tensorflow/compiler/xla/service/hlo_computation.h"
#include "tensorflow/compiler/xla/service/hlo_instruction.h"
#include "tensorflow/compiler/xla/service/hlo_module.h"
#include "tensorflow/compiler/xla/xla.pb.h"

namespace xla {

HloModuleImporter::HloModuleImporter(mlir::ModuleOp module)
    : module_(module), builder_(module.getContext()) {
  module.getContext()->loadDialect<mlir::StandardOpsDialect>();
  module.getContext()->loadDialect<mlir::mhlo::MhloDialect>();
}

Status HloModuleImporter::Import(const xla::HloModule& module) {
  // TODO(hinsu): Only import the entry computation here once all HLO ops with
  // reference to other computation are updated to have a region instead of a
  // function attribute. Currently the importer test doesn't refer to all the
  // computations from the entry computation so tests may need some update.
  for (const auto* computation : module.computations()) {
    TF_RETURN_IF_ERROR(HloFunctionImporter::ImportAsFunc(
        *computation, module_, &function_map_, &builder_));
  }

  return Status::OK();
}

Status HloModuleImporter::Import(const xla::HloModuleProto& module_proto) {
  xla::DebugOptions debug_options;
  TF_ASSIGN_OR_RETURN(
      auto module_config,
      xla::HloModule::CreateModuleConfigFromProto(module_proto, debug_options));
  TF_ASSIGN_OR_RETURN(auto module, xla::HloModule::CreateFromProto(
                                       module_proto, module_config));

  return Import(*module);
}

}  // namespace xla