llvm/llvm/lib/IR/AttributeImpl.h

//===- AttributeImpl.h - Attribute Internals --------------------*- 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
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file defines various helper methods and classes used by
/// LLVMContextImpl for creating and managing attributes.
///
//===----------------------------------------------------------------------===//

#ifndef LLVM_LIB_IR_ATTRIBUTEIMPL_H
#define LLVM_LIB_IR_ATTRIBUTEIMPL_H

#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/IR/Attributes.h"
#include "llvm/IR/ConstantRange.h"
#include "llvm/IR/ConstantRangeList.h"
#include "llvm/Support/TrailingObjects.h"
#include <cassert>
#include <cstddef>
#include <cstdint>
#include <optional>
#include <string>
#include <utility>

namespace llvm {

class LLVMContext;
class Type;

//===----------------------------------------------------------------------===//
/// \class
/// This class represents a single, uniqued attribute. That attribute
/// could be a single enum, a tuple, or a string.
class AttributeImpl : public FoldingSetNode { … };

static_assert …;

//===----------------------------------------------------------------------===//
/// \class
/// A set of classes that contain the value of the
/// attribute object. There are three main categories: enum attribute entries,
/// represented by Attribute::AttrKind; alignment attribute entries; and string
/// attribute enties, which are for target-dependent attributes.

class EnumAttributeImpl : public AttributeImpl { … };

class IntAttributeImpl : public EnumAttributeImpl { … };

class StringAttributeImpl final
    : public AttributeImpl,
      private TrailingObjects<StringAttributeImpl, char> { … };

class TypeAttributeImpl : public EnumAttributeImpl { … };

class ConstantRangeAttributeImpl : public EnumAttributeImpl { … };

class ConstantRangeListAttributeImpl final
    : public EnumAttributeImpl,
      private TrailingObjects<ConstantRangeListAttributeImpl, ConstantRange> { … };

class AttributeBitSet { … };

//===----------------------------------------------------------------------===//
/// \class
/// This class represents a group of attributes that apply to one
/// element: function, return type, or parameter.
class AttributeSetNode final
    : public FoldingSetNode,
      private TrailingObjects<AttributeSetNode, Attribute> { … };

//===----------------------------------------------------------------------===//
/// \class
/// This class represents a set of attributes that apply to the function,
/// return type, and parameters.
class AttributeListImpl final
    : public FoldingSetNode,
      private TrailingObjects<AttributeListImpl, AttributeSet> { … };

static_assert …;

} // end namespace llvm

#endif // LLVM_LIB_IR_ATTRIBUTEIMPL_H