Line data    Source code

       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          86 :   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          76 :   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