struct AvailableValue

Declaration

struct AvailableValue { /* full declaration omitted */ };

Description

Represents a particular available value that we know how to materialize. Materialization of an AvailableValue never fails. An AvailableValue is implicitly associated with a rematerialization point which is the location of the instruction from which it was formed.

Declared at: llvm/lib/Transforms/Scalar/GVN.cpp:164

Member Variables

public PointerIntPair<llvm::Value*, 2, llvm::gvn::AvailableValue::ValType> Val

V - The value that is live out of the block.

public unsigned int Offset = 0

Offset - The byte offset in Val that is interesting for the load query.

Method Overview

• public llvm::Value * MaterializeAdjustedValue(llvm::LoadInst * LI, llvm::Instruction * InsertPt, llvm::GVN & gvn) const
• public static llvm::gvn::AvailableValue get(llvm::Value * V, unsigned int Offset = 0)
• public llvm::LoadInst * getCoercedLoadValue() const
• public static llvm::gvn::AvailableValue getLoad(llvm::LoadInst * LI, unsigned int Offset = 0)
• public static llvm::gvn::AvailableValue getMI(llvm::MemIntrinsic * MI, unsigned int Offset = 0)
• public llvm::MemIntrinsic * getMemIntrinValue() const
• public llvm::Value * getSimpleValue() const
• public static llvm::gvn::AvailableValue getUndef()
• public bool isCoercedLoadValue() const
• public bool isMemIntrinValue() const
• public bool isSimpleValue() const
• public bool isUndefValue() const

Methods

¶llvm::Value* MaterializeAdjustedValue(
    llvm::LoadInst* LI,
    llvm::Instruction* InsertPt,
    llvm::GVN& gvn) const

Description

Emit code at the specified insertion point to adjust the value defined here to the specified type. This handles various coercion cases.

Declared at: llvm/lib/Transforms/Scalar/GVN.cpp:233

Parameters

llvm::LoadInst* LI

llvm::Instruction* InsertPt

llvm::GVN& gvn

¶static llvm::gvn::AvailableValue get(
    llvm::Value* V,
    unsigned int Offset = 0)

Declared at: llvm/lib/Transforms/Scalar/GVN.cpp:179

Parameters

llvm::Value* V

unsigned int Offset = 0

¶llvm::LoadInst* getCoercedLoadValue() const

Declared at: llvm/lib/Transforms/Scalar/GVN.cpp:221

¶static llvm::gvn::AvailableValue getLoad(
    llvm::LoadInst* LI,
    unsigned int Offset = 0)

Declared at: llvm/lib/Transforms/Scalar/GVN.cpp:195

Parameters

llvm::LoadInst* LI

unsigned int Offset = 0

¶static llvm::gvn::AvailableValue getMI(
    llvm::MemIntrinsic* MI,
    unsigned int Offset = 0)

Declared at: llvm/lib/Transforms/Scalar/GVN.cpp:187

Parameters

llvm::MemIntrinsic* MI

unsigned int Offset = 0

¶llvm::MemIntrinsic* getMemIntrinValue() const

Declared at: llvm/lib/Transforms/Scalar/GVN.cpp:226

¶llvm::Value* getSimpleValue() const

Declared at: llvm/lib/Transforms/Scalar/GVN.cpp:216

¶static llvm::gvn::AvailableValue getUndef()

Declared at: llvm/lib/Transforms/Scalar/GVN.cpp:203

¶bool isCoercedLoadValue() const

Declared at: llvm/lib/Transforms/Scalar/GVN.cpp:212

¶bool isMemIntrinValue() const

Declared at: llvm/lib/Transforms/Scalar/GVN.cpp:213

¶bool isSimpleValue() const

Declared at: llvm/lib/Transforms/Scalar/GVN.cpp:211

¶bool isUndefValue() const

Declared at: llvm/lib/Transforms/Scalar/GVN.cpp:214