// Copyright (c) 2022 PaddlePaddle 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 "paddle/phi/core/compat/op_utils.h"

namespace phi {

KernelSignature LayerNormOpArgumentMapping(const ArgumentMappingContext& ctx) {
  return KernelSignature("layer_norm",
                         {"X", "Scale", "Bias"},
                         {"epsilon", "begin_norm_axis", "is_test"},
                         {"Y", "Mean", "Variance"});
}

KernelSignature LayerNormGradOpArgumentMapping(
    const ArgumentMappingContext& ctx) {
  return KernelSignature(
      "layer_norm_grad",
      {"X", "Mean", "Variance", "Scale", "Bias", GradVarName("Y")},
      {"epsilon", "begin_norm_axis", "is_test"},
      {GradVarName("X"), GradVarName("Scale"), GradVarName("Bias")});
}

}  // namespace phi

PD_REGISTER_ARG_MAPPING_FN(layer_norm, phi::LayerNormOpArgumentMapping);
PD_REGISTER_ARG_MAPPING_FN(layer_norm_grad,
                           phi::LayerNormGradOpArgumentMapping);