1 //===- LoopUnrollPass.h -----------------------------------------*- 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 #ifndef LLVM_TRANSFORMS_SCALAR_LOOPUNROLLPASS_H 11 #define LLVM_TRANSFORMS_SCALAR_LOOPUNROLLPASS_H 12 13 #include "llvm/Analysis/LoopAnalysisManager.h" 14 #include "llvm/IR/PassManager.h" 15 16 namespace llvm { 17 18 class Function; 19 class Loop; 20 class LPMUpdater; 21 22 /// Loop unroll pass that only does full loop unrolling. 23 class LoopFullUnrollPass : public PassInfoMixin<LoopFullUnrollPass> { 24 const int OptLevel; 25 26 public: 27 explicit LoopFullUnrollPass(int OptLevel = 2) : OptLevel(OptLevel) {} 28 29 PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM, 30 LoopStandardAnalysisResults &AR, LPMUpdater &U); 31 }; 32 33 /// Loop unroll pass that will support both full and partial unrolling. 34 /// It is a function pass to have access to function and module analyses. 35 /// It will also put loops into canonical form (simplified and LCSSA). 36 class LoopUnrollPass : public PassInfoMixin<LoopUnrollPass> { 37 const int OptLevel; 38 39 public: 40 /// This uses the target information (or flags) to control the thresholds for 41 /// different unrolling stategies but supports all of them. 42 explicit LoopUnrollPass(int OptLevel = 2) : OptLevel(OptLevel) {} 43 44 PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM); 45 }; 46 47 } // end namespace llvm 48 49 #endif // LLVM_TRANSFORMS_SCALAR_LOOPUNROLLPASS_H 50
