1 //===- LoopRotation.h - Loop Rotation -------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file provides the interface for the Loop Rotation pass.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_TRANSFORMS_SCALAR_LOOPROTATION_H
14 #define LLVM_TRANSFORMS_SCALAR_LOOPROTATION_H
15 
16 #include "llvm/Analysis/LoopInfo.h"
17 #include "llvm/IR/PassManager.h"
18 #include "llvm/Transforms/Scalar/LoopPassManager.h"
19 
20 namespace llvm {
21 
22 /// A simple loop rotation transformation.
23 class LoopRotatePass : public PassInfoMixin<LoopRotatePass> {
24 public:
25   LoopRotatePass(bool EnableHeaderDuplication = true);
26   PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM,
27                         LoopStandardAnalysisResults &AR, LPMUpdater &U);
28 
29 private:
30   const bool EnableHeaderDuplication;
31 };
32 }
33 
34 #endif // LLVM_TRANSFORMS_SCALAR_LOOPROTATION_H
35