llvm/llvm/include/llvm/IR/NoFolder.h

//===- NoFolder.h - Constant folding helper ---------------------*- 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 NoFolder class, a helper for IRBuilder.  It provides
// IRBuilder with a set of methods for creating unfolded constants.  This is
// useful for learners trying to understand how LLVM IR works, and who don't
// want details to be hidden by the constant folder.  For general constant
// creation and folding, use ConstantExpr and the routines in
// llvm/Analysis/ConstantFolding.h.
//
// Note: since it is not actually possible to create unfolded constants, this
// class returns instructions rather than constants.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_IR_NOFOLDER_H
#define LLVM_IR_NOFOLDER_H

#include "llvm/ADT/ArrayRef.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/FMF.h"
#include "llvm/IR/IRBuilderFolder.h"
#include "llvm/IR/InstrTypes.h"
#include "llvm/IR/Instruction.h"
#include "llvm/IR/Instructions.h"

namespace llvm {

/// NoFolder - Create "constants" (actually, instructions) with no folding.
class NoFolder final : public IRBuilderFolder { … };

} // end namespace llvm

#endif // LLVM_IR_NOFOLDER_H