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LLVM 22.0.0git
Public Types | Public Member Functions | Static Public Member Functions | Public Attributes | List of all members
llvm::gvn::AvailableValue Struct Reference

Represents a particular available value that we know how to materialize. More...

Public Types

enum class  ValType {
  SimpleVal , LoadVal , MemIntrin , UndefVal ,
  SelectVal
}

Public Member Functions

bool isSimpleValue () const
bool isCoercedLoadValue () const
bool isMemIntrinValue () const
bool isUndefValue () const
bool isSelectValue () const
Value * getSimpleValue () const
LoadInst * getCoercedLoadValue () const
MemIntrinsic * getMemIntrinValue () const
SelectInst * getSelectValue () const
Value * MaterializeAdjustedValue (LoadInst *Load, Instruction *InsertPt) const
 Emit code at the specified insertion point to adjust the value defined here to the specified type.

Static Public Member Functions

static AvailableValue get (Value *V, unsigned Offset=0)
static AvailableValue getMI (MemIntrinsic *MI, unsigned Offset=0)
static AvailableValue getLoad (LoadInst *Load, unsigned Offset=0)
static AvailableValue getUndef ()
static AvailableValue getSelect (SelectInst *Sel, Value *V1, Value *V2)

Public Attributes

Value * Val
 Val - The value that is live out of the block.
ValType Kind
 Kind of the live-out value.
unsigned Offset = 0
 Offset - The byte offset in Val that is interesting for the load query.
Value * V1 = nullptr
 V1, V2 - The dominating non-clobbered values of SelectVal.
Value * V2 = nullptr

Detailed 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.

Definition at line 197 of file GVN.cpp.

Member Enumeration Documentation

◆ ValType

enum class llvm::gvn::AvailableValue::ValType
strong
Enumerator
SimpleVal 
LoadVal 
MemIntrin 
UndefVal 
SelectVal 

Definition at line 198 of file GVN.cpp.

Member Function Documentation

◆ get()

AvailableValue llvm::gvn::AvailableValue::get ( Value * V,
unsigned Offset = 0 )
inlinestatic

Definition at line 218 of file GVN.cpp.

References Kind, Offset, SimpleVal, and Val.

Referenced by llvm::gvn::AvailableValueInBlock::get().

◆ getCoercedLoadValue()

LoadInst * llvm::gvn::AvailableValue::getCoercedLoadValue ( ) const
inline

Definition at line 271 of file GVN.cpp.

References assert(), llvm::cast(), isCoercedLoadValue(), and Val.

Referenced by MaterializeAdjustedValue().

◆ getLoad()

AvailableValue llvm::gvn::AvailableValue::getLoad ( LoadInst * Load,
unsigned Offset = 0 )
inlinestatic

Definition at line 234 of file GVN.cpp.

References Kind, LoadVal, Offset, and Val.

◆ getMemIntrinValue()

MemIntrinsic * llvm::gvn::AvailableValue::getMemIntrinValue ( ) const
inline

Definition at line 276 of file GVN.cpp.

References assert(), llvm::cast(), isMemIntrinValue(), and Val.

Referenced by MaterializeAdjustedValue().

◆ getMI()

AvailableValue llvm::gvn::AvailableValue::getMI ( MemIntrinsic * MI,
unsigned Offset = 0 )
inlinestatic

Definition at line 226 of file GVN.cpp.

References Kind, MemIntrin, MI, Offset, and Val.

◆ getSelect()

AvailableValue llvm::gvn::AvailableValue::getSelect ( SelectInst * Sel,
Value * V1,
Value * V2 )
inlinestatic

Definition at line 250 of file GVN.cpp.

References Kind, Offset, SelectVal, V1, V2, and Val.

Referenced by llvm::gvn::AvailableValueInBlock::getSelect().

◆ getSelectValue()

SelectInst * llvm::gvn::AvailableValue::getSelectValue ( ) const
inline

Definition at line 281 of file GVN.cpp.

References assert(), llvm::cast(), isSelectValue(), and Val.

Referenced by MaterializeAdjustedValue().

◆ getSimpleValue()

Value * llvm::gvn::AvailableValue::getSimpleValue ( ) const
inline

Definition at line 266 of file GVN.cpp.

References assert(), isSimpleValue(), and Val.

Referenced by MaterializeAdjustedValue().

◆ getUndef()

AvailableValue llvm::gvn::AvailableValue::getUndef ( )
inlinestatic

Definition at line 242 of file GVN.cpp.

References Kind, Offset, UndefVal, and Val.

Referenced by llvm::gvn::AvailableValueInBlock::getUndef().

◆ isCoercedLoadValue()

bool llvm::gvn::AvailableValue::isCoercedLoadValue ( ) const
inline

Definition at line 261 of file GVN.cpp.

References Kind, and LoadVal.

Referenced by getCoercedLoadValue(), and MaterializeAdjustedValue().

◆ isMemIntrinValue()

bool llvm::gvn::AvailableValue::isMemIntrinValue ( ) const
inline

Definition at line 262 of file GVN.cpp.

References Kind, and MemIntrin.

Referenced by getMemIntrinValue(), and MaterializeAdjustedValue().

◆ isSelectValue()

bool llvm::gvn::AvailableValue::isSelectValue ( ) const
inline

Definition at line 264 of file GVN.cpp.

References Kind, and SelectVal.

Referenced by getSelectValue(), and MaterializeAdjustedValue().

◆ isSimpleValue()

bool llvm::gvn::AvailableValue::isSimpleValue ( ) const
inline

Definition at line 260 of file GVN.cpp.

References Kind, and SimpleVal.

Referenced by getSimpleValue(), and MaterializeAdjustedValue().

◆ isUndefValue()

bool llvm::gvn::AvailableValue::isUndefValue ( ) const
inline

Definition at line 263 of file GVN.cpp.

References Kind, and UndefVal.

◆ MaterializeAdjustedValue()

Value * AvailableValue::MaterializeAdjustedValue ( LoadInst * Load,
Instruction * InsertPt ) const

Emit code at the specified insertion point to adjust the value defined here to the specified type.

This handles various coercion cases.

Definition at line 1148 of file GVN.cpp.

References assert(), llvm::cast(), llvm::combineMetadataForCSE(), llvm::SelectInst::Create(), llvm::dbgs(), DL, llvm::Instruction::dropUnknownNonDebugMetadata(), getCoercedLoadValue(), llvm::SelectInst::getCondition(), llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::VNCoercion::getMemInstValueForLoad(), getMemIntrinValue(), getSelectValue(), getSimpleValue(), llvm::Value::getType(), llvm::VNCoercion::getValueForLoad(), llvm::Instruction::hasMetadata(), isCoercedLoadValue(), isMemIntrinValue(), isSelectValue(), isSimpleValue(), LLVM_DEBUG, llvm_unreachable, Offset, V1, and V2.

Member Data Documentation

◆ Kind

ValType llvm::gvn::AvailableValue::Kind

Kind of the live-out value.

Definition at line 211 of file GVN.cpp.

Referenced by get(), getLoad(), getMI(), getSelect(), getUndef(), isCoercedLoadValue(), isMemIntrinValue(), isSelectValue(), isSimpleValue(), and isUndefValue().

◆ Offset

unsigned llvm::gvn::AvailableValue::Offset = 0

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

Definition at line 214 of file GVN.cpp.

Referenced by get(), getLoad(), getMI(), getSelect(), getUndef(), and MaterializeAdjustedValue().

◆ V1

Value* llvm::gvn::AvailableValue::V1 = nullptr

V1, V2 - The dominating non-clobbered values of SelectVal.

Definition at line 216 of file GVN.cpp.

Referenced by getSelect(), and MaterializeAdjustedValue().

◆ V2

Value * llvm::gvn::AvailableValue::V2 = nullptr

Definition at line 216 of file GVN.cpp.

Referenced by getSelect(), and MaterializeAdjustedValue().

◆ Val

Value* llvm::gvn::AvailableValue::Val

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

Definition at line 209 of file GVN.cpp.

Referenced by get(), getCoercedLoadValue(), getLoad(), getMemIntrinValue(), getMI(), getSelect(), getSelectValue(), getSimpleValue(), and getUndef().

The documentation for this struct was generated from the following file:
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