LCOV - code coverage report
Current view: top level - include/llvm/Transforms/Scalar - MemCpyOptimizer.h (source / functions) Hit Total Coverage
Test: llvm-toolchain.info Lines: 2 2 100.0 %
Date: 2017-09-14 15:23:50 Functions: 2 2 100.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : //===---- MemCpyOptimizer.h - memcpy optimization ---------------*- 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 pass performs various transformations related to eliminating memcpy
      11             : // calls, or transforming sets of stores into memset's.
      12             : //
      13             : //===----------------------------------------------------------------------===//
      14             : 
      15             : #ifndef LLVM_TRANSFORMS_SCALAR_MEMCPYOPTIMIZER_H
      16             : #define LLVM_TRANSFORMS_SCALAR_MEMCPYOPTIMIZER_H
      17             : 
      18             : #include "llvm/Analysis/AliasAnalysis.h"
      19             : #include "llvm/Analysis/AssumptionCache.h"
      20             : #include "llvm/Analysis/MemoryDependenceAnalysis.h"
      21             : #include "llvm/Analysis/TargetLibraryInfo.h"
      22             : #include "llvm/IR/BasicBlock.h"
      23             : #include "llvm/IR/Dominators.h"
      24             : #include "llvm/IR/Function.h"
      25             : #include "llvm/IR/Instructions.h"
      26             : #include "llvm/IR/IntrinsicInst.h"
      27             : #include "llvm/IR/PassManager.h"
      28             : #include <cstdint>
      29             : #include <functional>
      30             : 
      31             : namespace llvm {
      32             : 
      33        5764 : class MemCpyOptPass : public PassInfoMixin<MemCpyOptPass> {
      34             :   MemoryDependenceResults *MD = nullptr;
      35             :   TargetLibraryInfo *TLI = nullptr;
      36             :   std::function<AliasAnalysis &()> LookupAliasAnalysis;
      37             :   std::function<AssumptionCache &()> LookupAssumptionCache;
      38             :   std::function<DominatorTree &()> LookupDomTree;
      39             : 
      40             : public:
      41        4788 :   MemCpyOptPass() = default;
      42             : 
      43             :   PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
      44             :   // Glue for the old PM.
      45             :   bool runImpl(Function &F, MemoryDependenceResults *MD_,
      46             :                TargetLibraryInfo *TLI_,
      47             :                std::function<AliasAnalysis &()> LookupAliasAnalysis_,
      48             :                std::function<AssumptionCache &()> LookupAssumptionCache_,
      49             :                std::function<DominatorTree &()> LookupDomTree_);
      50             : 
      51             : private:
      52             :   // Helper functions
      53             :   bool processStore(StoreInst *SI, BasicBlock::iterator &BBI);
      54             :   bool processMemSet(MemSetInst *SI, BasicBlock::iterator &BBI);
      55             :   bool processMemCpy(MemCpyInst *M);
      56             :   bool processMemMove(MemMoveInst *M);
      57             :   bool performCallSlotOptzn(Instruction *cpy, Value *cpyDst, Value *cpySrc,
      58             :                             uint64_t cpyLen, unsigned cpyAlign, CallInst *C);
      59             :   bool processMemCpyMemCpyDependence(MemCpyInst *M, MemCpyInst *MDep);
      60             :   bool processMemSetMemCpyDependence(MemCpyInst *M, MemSetInst *MDep);
      61             :   bool performMemCpyToMemSetOptzn(MemCpyInst *M, MemSetInst *MDep);
      62             :   bool processByValArgument(CallSite CS, unsigned ArgNo);
      63             :   Instruction *tryMergingIntoMemset(Instruction *I, Value *StartPtr,
      64             :                                     Value *ByteVal);
      65             : 
      66             :   bool iterateOnFunction(Function &F);
      67             : };
      68             : 
      69             : } // end namespace llvm
      70             : 
      71             : #endif // LLVM_TRANSFORMS_SCALAR_MEMCPYOPTIMIZER_H

Generated by: LCOV version 1.13