1 //===- LoopSimplifyCFG.cpp - Loop CFG Simplification Pass -------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the Loop SimplifyCFG Pass. This pass is responsible for
11 // basic loop CFG cleanup, primarily to assist other loop passes. If you
12 // encounter a noncanonical CFG construct that causes another loop pass to
13 // perform suboptimally, this is the place to fix it up.
15 //===----------------------------------------------------------------------===//
17 #ifndef LLVM_TRANSFORMS_SCALAR_LOOPSIMPLIFYCFG_H
18 #define LLVM_TRANSFORMS_SCALAR_LOOPSIMPLIFYCFG_H
20 #include "llvm/Analysis/LoopInfo.h"
21 #include "llvm/Analysis/LoopPassManager.h"
22 #include "llvm/IR/PassManager.h"
26 /// Performs basic CFG simplifications to assist other loop passes.
27 class LoopSimplifyCFGPass : public PassInfoMixin<LoopSimplifyCFGPass> {
29 PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM,
30 LoopStandardAnalysisResults &AR, LPMUpdater &U);
32 } // end namespace llvm
34 #endif // LLVM_TRANSFORMS_SCALAR_LOOPSIMPLIFYCFG_H