llvm/mlir/include/mlir/TableGen/Argument.h

//===- Argument.h - Argument definitions ------------------------*- 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 header file contains definitions for TableGen operation's arguments.
// Operation arguments fall into two categories:
//
// 1. Operands: SSA values operated on by the operation
// 2. Attributes: compile-time known properties that have influence over
//    the operation's behavior
//
// These two categories are modelled with the unified argument concept in
// TableGen because we need similar pattern matching mechanisms for them.
//
//===----------------------------------------------------------------------===//

#ifndef MLIR_TABLEGEN_ARGUMENT_H_
#define MLIR_TABLEGEN_ARGUMENT_H_

#include "mlir/TableGen/Attribute.h"
#include "mlir/TableGen/Property.h"
#include "mlir/TableGen/Type.h"
#include "llvm/ADT/PointerUnion.h"
#include <string>

namespace llvm {
class StringRef;
} // namespace llvm

namespace mlir {
namespace tblgen {

// A struct wrapping an op attribute and its name together
struct NamedAttribute { … };

// A struct wrapping an op operand/result's constraint and its name together
struct NamedTypeConstraint { … };

// Operation argument: either attribute, property, or operand
Argument;

} // namespace tblgen
} // namespace mlir

#endif // MLIR_TABLEGEN_ARGUMENT_H_