34 lines
1.3 KiB
C++
34 lines
1.3 KiB
C++
//===- LoopSimplifyCFG.cpp - Loop CFG Simplification Pass -------*- 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 implements the Loop SimplifyCFG Pass. This pass is responsible for
|
|
// basic loop CFG cleanup, primarily to assist other loop passes. If you
|
|
// encounter a noncanonical CFG construct that causes another loop pass to
|
|
// perform suboptimally, this is the place to fix it up.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_TRANSFORMS_SCALAR_LOOPSIMPLIFYCFG_H
|
|
#define LLVM_TRANSFORMS_SCALAR_LOOPSIMPLIFYCFG_H
|
|
|
|
#include "llvm/Analysis/LoopInfo.h"
|
|
#include "llvm/IR/PassManager.h"
|
|
#include "llvm/Transforms/Scalar/LoopPassManager.h"
|
|
|
|
namespace llvm {
|
|
|
|
/// Performs basic CFG simplifications to assist other loop passes.
|
|
class LoopSimplifyCFGPass : public PassInfoMixin<LoopSimplifyCFGPass> {
|
|
public:
|
|
PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM,
|
|
LoopStandardAnalysisResults &AR, LPMUpdater &U);
|
|
};
|
|
} // end namespace llvm
|
|
|
|
#endif // LLVM_TRANSFORMS_SCALAR_LOOPSIMPLIFYCFG_H
|