1 //===- LoopSimplifyCFG.cpp - Loop CFG Simplification Pass -------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 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. 14 // 15 //===----------------------------------------------------------------------===// 16 17 #ifndef LLVM_TRANSFORMS_SCALAR_LOOPSIMPLIFYCFG_H 18 #define LLVM_TRANSFORMS_SCALAR_LOOPSIMPLIFYCFG_H 19 20 #include "llvm/Analysis/LoopInfo.h" 21 #include "llvm/IR/PassManager.h" 22 #include "llvm/Transforms/Scalar/LoopPassManager.h" 23 24 namespace llvm { 25 26 /// Performs basic CFG simplifications to assist other loop passes. 27 class LoopSimplifyCFGPass : public PassInfoMixin<LoopSimplifyCFGPass> { 28 public: 29 PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM, 30 LoopStandardAnalysisResults &AR, LPMUpdater &U); 31 }; 32 } // end namespace llvm 33 34 #endif // LLVM_TRANSFORMS_SCALAR_LOOPSIMPLIFYCFG_H 35
