class MemCpyOptPass

Declaration

class MemCpyOptPass : public PassInfoMixin { /* full declaration omitted */ };

Description

A CRTP mix-in to automatically provide informational APIs needed for passes. This provides some boilerplate for types that are passes.

Declared at: llvm/include/llvm/Transforms/Scalar/MemCpyOptimizer.h:39

Inherits from: PassInfoMixin

Member Variables

private llvm::TargetLibraryInfo* TLI = nullptr

private llvm::AAResults* AA = nullptr

private llvm::AssumptionCache* AC = nullptr

private llvm::DominatorTree* DT = nullptr

private llvm::MemorySSA* MSSA = nullptr

private llvm::MemorySSAUpdater* MSSAU = nullptr

Method Overview

• public MemCpyOptPass()
• private void eraseInstruction(llvm::Instruction * I)
• private bool iterateOnFunction(llvm::Function & F)
• private bool moveUp(llvm::StoreInst * SI, llvm::Instruction * P, const llvm::LoadInst * LI)
• private bool performCallSlotOptzn(llvm::Instruction * cpyLoad, llvm::Instruction * cpyStore, llvm::Value * cpyDst, llvm::Value * cpySrc, llvm::TypeSize cpyLen, llvm::Align cpyAlign, std::function<CallInst *()> GetC)
• private bool performMemCpyToMemSetOptzn(llvm::MemCpyInst * MemCpy, llvm::MemSetInst * MemSet)
• private bool processByValArgument(llvm::CallBase & CB, unsigned int ArgNo)
• private bool processMemCpy(llvm::MemCpyInst * M, BasicBlock::iterator & BBI)
• private bool processMemCpyMemCpyDependence(llvm::MemCpyInst * M, llvm::MemCpyInst * MDep)
• private bool processMemMove(llvm::MemMoveInst * M)
• private bool processMemSet(llvm::MemSetInst * SI, BasicBlock::iterator & BBI)
• private bool processMemSetMemCpyDependence(llvm::MemCpyInst * MemCpy, llvm::MemSetInst * MemSet)
• private bool processStore(llvm::StoreInst * SI, BasicBlock::iterator & BBI)
• public llvm::PreservedAnalyses run(llvm::Function & F, llvm::FunctionAnalysisManager & AM)
• public bool runImpl(llvm::Function & F, llvm::TargetLibraryInfo * TLI, llvm::AAResults * AA, llvm::AssumptionCache * AC, llvm::DominatorTree * DT, llvm::MemorySSA * MSSA)
• private llvm::Instruction * tryMergingIntoMemset(llvm::Instruction * I, llvm::Value * StartPtr, llvm::Value * ByteVal)

Methods

¶MemCpyOptPass()

Declared at: llvm/include/llvm/Transforms/Scalar/MemCpyOptimizer.h:48

¶void eraseInstruction(llvm::Instruction* I)

Declared at: llvm/include/llvm/Transforms/Scalar/MemCpyOptimizer.h:73

Parameters

llvm::Instruction* I

¶bool iterateOnFunction(llvm::Function& F)

Declared at: llvm/include/llvm/Transforms/Scalar/MemCpyOptimizer.h:74

Parameters

llvm::Function& F

¶bool moveUp(llvm::StoreInst* SI,
            llvm::Instruction* P,
            const llvm::LoadInst* LI)

Declared at: llvm/include/llvm/Transforms/Scalar/MemCpyOptimizer.h:71

Parameters

llvm::StoreInst* SI

llvm::Instruction* P

const llvm::LoadInst* LI

¶bool performCallSlotOptzn(
    llvm::Instruction* cpyLoad,
    llvm::Instruction* cpyStore,
    llvm::Value* cpyDst,
    llvm::Value* cpySrc,
    llvm::TypeSize cpyLen,
    llvm::Align cpyAlign,
    std::function<CallInst*()> GetC)

Declared at: llvm/include/llvm/Transforms/Scalar/MemCpyOptimizer.h:62

Parameters

llvm::Instruction* cpyLoad

llvm::Instruction* cpyStore

llvm::Value* cpyDst

llvm::Value* cpySrc

llvm::TypeSize cpyLen

llvm::Align cpyAlign

std::function<CallInst*()> GetC

¶bool performMemCpyToMemSetOptzn(
    llvm::MemCpyInst* MemCpy,
    llvm::MemSetInst* MemSet)

Declared at: llvm/include/llvm/Transforms/Scalar/MemCpyOptimizer.h:67

Parameters

llvm::MemCpyInst* MemCpy

llvm::MemSetInst* MemSet

¶bool processByValArgument(llvm::CallBase& CB,
                          unsigned int ArgNo)

Declared at: llvm/include/llvm/Transforms/Scalar/MemCpyOptimizer.h:68

Parameters

llvm::CallBase& CB

unsigned int ArgNo

¶bool processMemCpy(llvm::MemCpyInst* M,
                   BasicBlock::iterator& BBI)

Declared at: llvm/include/llvm/Transforms/Scalar/MemCpyOptimizer.h:60

Parameters

llvm::MemCpyInst* M

BasicBlock::iterator& BBI

¶bool processMemCpyMemCpyDependence(
    llvm::MemCpyInst* M,
    llvm::MemCpyInst* MDep)

Declared at: llvm/include/llvm/Transforms/Scalar/MemCpyOptimizer.h:65

Parameters

llvm::MemCpyInst* M

llvm::MemCpyInst* MDep

¶bool processMemMove(llvm::MemMoveInst* M)

Declared at: llvm/include/llvm/Transforms/Scalar/MemCpyOptimizer.h:61

Parameters

llvm::MemMoveInst* M

¶bool processMemSet(llvm::MemSetInst* SI,
                   BasicBlock::iterator& BBI)

Declared at: llvm/include/llvm/Transforms/Scalar/MemCpyOptimizer.h:59

Parameters

llvm::MemSetInst* SI

BasicBlock::iterator& BBI

¶bool processMemSetMemCpyDependence(
    llvm::MemCpyInst* MemCpy,
    llvm::MemSetInst* MemSet)

Declared at: llvm/include/llvm/Transforms/Scalar/MemCpyOptimizer.h:66

Parameters

llvm::MemCpyInst* MemCpy

llvm::MemSetInst* MemSet

¶bool processStore(llvm::StoreInst* SI,
                  BasicBlock::iterator& BBI)

Declared at: llvm/include/llvm/Transforms/Scalar/MemCpyOptimizer.h:58

Parameters

llvm::StoreInst* SI

BasicBlock::iterator& BBI

¶llvm::PreservedAnalyses run(
    llvm::Function& F,
    llvm::FunctionAnalysisManager& AM)

Declared at: llvm/include/llvm/Transforms/Scalar/MemCpyOptimizer.h:50

Parameters

llvm::Function& F

llvm::FunctionAnalysisManager& AM

¶bool runImpl(llvm::Function& F,
             llvm::TargetLibraryInfo* TLI,
             llvm::AAResults* AA,
             llvm::AssumptionCache* AC,
             llvm::DominatorTree* DT,
             llvm::MemorySSA* MSSA)

Declared at: llvm/include/llvm/Transforms/Scalar/MemCpyOptimizer.h:53

Parameters

llvm::Function& F

llvm::TargetLibraryInfo* TLI

llvm::AAResults* AA

llvm::AssumptionCache* AC

llvm::DominatorTree* DT

llvm::MemorySSA* MSSA

¶llvm::Instruction* tryMergingIntoMemset(
    llvm::Instruction* I,
    llvm::Value* StartPtr,
    llvm::Value* ByteVal)

Declared at: llvm/include/llvm/Transforms/Scalar/MemCpyOptimizer.h:69

Parameters

llvm::Instruction* I

llvm::Value* StartPtr

llvm::Value* ByteVal