/* Copyright 2020 The OpenXLA Authors.

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.
==============================================================================*/

#ifndef XLA_SERVICE_GPU_TRANSFORMS_DOT_OPERAND_CONVERTER_H_
#define XLA_SERVICE_GPU_TRANSFORMS_DOT_OPERAND_CONVERTER_H_

#include <utility>

#include "absl/status/statusor.h"
#include "absl/strings/string_view.h"
#include "xla/hlo/ir/hlo_instruction.h"
#include "xla/hlo/transforms/expanders/op_expander_pass.h"
#include "xla/util.h"

namespace xla::gpu {

// Converts both operands to the highest precision operand type.
class DotOperandConverter : public OpExpanderPass {
 public:
  explicit DotOperandConverter(HloPredicate extra_filter = nullptr)
      : OpExpanderPass(std::move(extra_filter)) {}

  absl::string_view name() const override { return "operand_converter"; }

 protected:
  bool InstructionMatchesPattern(HloInstruction* instruction) override;

  absl::StatusOr<HloInstruction*> ExpandInstruction(
      HloInstruction* instruction) override;
};

}  // namespace xla::gpu

#endif  // XLA_SERVICE_GPU_TRANSFORMS_DOT_OPERAND_CONVERTER_H_