llvm/mlir/include/mlir/IR/Region.h

//===- Region.h - MLIR Region Class -----------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file defines the Region class.
//
//===----------------------------------------------------------------------===//

#ifndef MLIR_IR_REGION_H
#define MLIR_IR_REGION_H

#include "mlir/IR/Block.h"

namespace mlir {
class TypeRange;
template <typename ValueRangeT>
class ValueTypeRange;
class IRMapping;

/// This class contains a list of basic blocks and a link to the parent
/// operation it is attached to.
class Region { … };

/// This class provides an abstraction over the different types of ranges over
/// Regions. In many cases, this prevents the need to explicitly materialize a
/// SmallVector/std::vector. This class should be used in places that are not
/// suitable for a more derived type (e.g. ArrayRef) or a template range
/// parameter.
class RegionRange
    : public llvm::detail::indexed_accessor_range_base<
          RegionRange,
          PointerUnion<Region *, const std::unique_ptr<Region> *, Region **>,
          Region *, Region *, Region *> { … };

} // namespace mlir

#endif // MLIR_IR_REGION_H