1//===- LoopSimplifyCFG.cpp - Loop CFG Simplification Pass -------*- C++ -*-===//
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 implements the Loop SimplifyCFG Pass. This pass is responsible for
10// basic loop CFG cleanup, primarily to assist other loop passes. If you
11// encounter a noncanonical CFG construct that causes another loop pass to
12// perform suboptimally, this is the place to fix it up.
13//
14//===----------------------------------------------------------------------===//
15
16#ifndef LLVM_TRANSFORMS_SCALAR_LOOPSIMPLIFYCFG_H
17#define LLVM_TRANSFORMS_SCALAR_LOOPSIMPLIFYCFG_H
18
19#include "llvm/Analysis/LoopAnalysisManager.h"
20#include "llvm/IR/PassManager.h"
21
22namespace llvm {
23
24class LPMUpdater;
25class Loop;
26
27/// Performs basic CFG simplifications to assist other loop passes.
28class LoopSimplifyCFGPass : public PassInfoMixin<LoopSimplifyCFGPass> {
29public:
30 PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM,
31 LoopStandardAnalysisResults &AR, LPMUpdater &U);
32};
33} // end namespace llvm
34
35#endif // LLVM_TRANSFORMS_SCALAR_LOOPSIMPLIFYCFG_H
36

source code of llvm/include/llvm/Transforms/Scalar/LoopSimplifyCFG.h