llvm/llvm/include/llvm/Transforms/Scalar/LoopUnrollPass.h

//===- LoopUnrollPass.h -----------------------------------------*- 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
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_TRANSFORMS_SCALAR_LOOPUNROLLPASS_H
#define LLVM_TRANSFORMS_SCALAR_LOOPUNROLLPASS_H

#include "llvm/Analysis/LoopAnalysisManager.h"
#include "llvm/IR/PassManager.h"
#include "llvm/Support/CommandLine.h"
#include <optional>

namespace llvm {

extern cl::opt<bool> ForgetSCEVInLoopUnroll;

class Function;
class Loop;
class LPMUpdater;

/// Loop unroll pass that only does full loop unrolling and peeling.
class LoopFullUnrollPass : public PassInfoMixin<LoopFullUnrollPass> { … };

/// A set of parameters used to control various transforms performed by the
/// LoopUnroll pass. Each of the boolean parameters can be set to:
///      true - enabling the transformation.
///      false - disabling the transformation.
///      None - relying on a global default.
///
/// There is also OptLevel parameter, which is used for additional loop unroll
/// tuning.
///
/// Intended use is to create a default object, modify parameters with
/// additional setters and then pass it to LoopUnrollPass.
///
struct LoopUnrollOptions { … };

/// Loop unroll pass that will support both full and partial unrolling.
/// It is a function pass to have access to function and module analyses.
/// It will also put loops into canonical form (simplified and LCSSA).
class LoopUnrollPass : public PassInfoMixin<LoopUnrollPass> { … };

} // end namespace llvm

#endif // LLVM_TRANSFORMS_SCALAR_LOOPUNROLLPASS_H