Template specialization to give SSAUpdater access to CFG and value information. More...

Classes
class	PHI_iterator
	Iterator for PHI operands. More...

Public Types
using	BlkT = LDVSSABlock

using	ValT = BlockValueNum

using	PhiT = LDVSSAPhi

using	BlkSucc_iterator = LDVSSABlockIterator

Static Public Member Functions
static BlkSucc_iterator	BlkSucc_begin (BlkT *BB)

static BlkSucc_iterator	BlkSucc_end (BlkT *BB)

static PHI_iterator	PHI_begin (PhiT *PHI)

static PHI_iterator	PHI_end (PhiT *PHI)

static void	FindPredecessorBlocks (LDVSSABlock BB, SmallVectorImpl< LDVSSABlock > *Preds)
	FindPredecessorBlocks - Put the predecessors of BB into the Preds vector.

static BlockValueNum	GetPoisonVal (LDVSSABlock BB, LDVSSAUpdater Updater)
	GetPoisonVal - Normally creates an IMPLICIT_DEF instruction with a new register.

static BlockValueNum	CreateEmptyPHI (LDVSSABlock BB, unsigned NumPreds, LDVSSAUpdater Updater)
	CreateEmptyPHI - Create a (representation of a) PHI in the given block.

static void	AddPHIOperand (LDVSSAPhi PHI, BlockValueNum Val, LDVSSABlock Pred)
	AddPHIOperand - Add the specified value as an operand of the PHI for the specified predecessor block.

static LDVSSAPhi *	ValueIsPHI (BlockValueNum Val, LDVSSAUpdater *Updater)
	ValueIsPHI - Check if the instruction that defines the specified value is a PHI instruction.

static LDVSSAPhi *	ValueIsNewPHI (BlockValueNum Val, LDVSSAUpdater *Updater)
	ValueIsNewPHI - Like ValueIsPHI but also check if the PHI has no source operands, i.e., it was just added.

static BlockValueNum	GetPHIValue (LDVSSAPhi *PHI)
	GetPHIValue - For the specified PHI instruction, return the value that it defines.

Detailed Description

Template specialization to give SSAUpdater access to CFG and value information.

SSAUpdater calls methods in these traits, passing in the LDVSSAUpdater object, to learn about blocks and the values they define. It also provides methods to create PHI nodes and track them.

Definition at line 3995 of file InstrRefBasedImpl.cpp.

Member Typedef Documentation

◆ BlkSucc_iterator

using llvm::SSAUpdaterTraits< LDVSSAUpdater >::BlkSucc_iterator = LDVSSABlockIterator

Definition at line 4000 of file InstrRefBasedImpl.cpp.

◆ BlkT

using llvm::SSAUpdaterTraits< LDVSSAUpdater >::BlkT = LDVSSABlock

Definition at line 3997 of file InstrRefBasedImpl.cpp.

◆ PhiT

using llvm::SSAUpdaterTraits< LDVSSAUpdater >::PhiT = LDVSSAPhi

Definition at line 3999 of file InstrRefBasedImpl.cpp.

◆ ValT

using llvm::SSAUpdaterTraits< LDVSSAUpdater >::ValT = BlockValueNum

Definition at line 3998 of file InstrRefBasedImpl.cpp.

Member Function Documentation

◆ AddPHIOperand()

static void llvm::SSAUpdaterTraits< LDVSSAUpdater >::AddPHIOperand	(	LDVSSAPhi *	PHI,
		BlockValueNum	Val,
		LDVSSABlock *	Pred
	)

inlinestatic

AddPHIOperand - Add the specified value as an operand of the PHI for the specified predecessor block.

Definition at line 4071 of file InstrRefBasedImpl.cpp.

References PHI.

◆ BlkSucc_begin()

static BlkSucc_iterator llvm::SSAUpdaterTraits< LDVSSAUpdater >::BlkSucc_begin ( BlkT * BB )

inlinestatic

Definition at line 4003 of file InstrRefBasedImpl.cpp.

◆ BlkSucc_end()

static BlkSucc_iterator llvm::SSAUpdaterTraits< LDVSSAUpdater >::BlkSucc_end ( BlkT * BB )

inlinestatic

Definition at line 4004 of file InstrRefBasedImpl.cpp.

◆ CreateEmptyPHI()

static BlockValueNum llvm::SSAUpdaterTraits< LDVSSAUpdater >::CreateEmptyPHI	(	LDVSSABlock *	BB,
		unsigned	NumPreds,
		LDVSSAUpdater *	Updater
	)

inlinestatic

CreateEmptyPHI - Create a (representation of a) PHI in the given block.

SSAUpdater will populate it with information about incoming values. The value number of this PHI is whatever the machine value number problem solution determined it to be. This includes non-phi values if SSAUpdater tries to create a PHI where the incoming values are identical.

Definition at line 4061 of file InstrRefBasedImpl.cpp.

References PHI.

◆ FindPredecessorBlocks()

static void llvm::SSAUpdaterTraits< LDVSSAUpdater >::FindPredecessorBlocks	(	LDVSSABlock *	BB,
		SmallVectorImpl< LDVSSABlock * > *	Preds
	)

inlinestatic

FindPredecessorBlocks - Put the predecessors of BB into the Preds vector.

Definition at line 4038 of file InstrRefBasedImpl.cpp.

References llvm::SmallVectorTemplateBase< T, bool >::push_back().

◆ GetPHIValue()

static BlockValueNum llvm::SSAUpdaterTraits< LDVSSAUpdater >::GetPHIValue ( LDVSSAPhi * PHI )

inlinestatic

GetPHIValue - For the specified PHI instruction, return the value that it defines.

Definition at line 4092 of file InstrRefBasedImpl.cpp.

References PHI.

◆ GetPoisonVal()

static BlockValueNum llvm::SSAUpdaterTraits< LDVSSAUpdater >::GetPoisonVal	(	LDVSSABlock *	BB,
		LDVSSAUpdater *	Updater
	)

inlinestatic

GetPoisonVal - Normally creates an IMPLICIT_DEF instruction with a new register.

For LiveDebugValues, represents a block identified as not having any DBG_PHI predecessors.

Definition at line 4047 of file InstrRefBasedImpl.cpp.

References LiveDebugValues::ValueIDNum::asU64().

◆ PHI_begin()

static PHI_iterator llvm::SSAUpdaterTraits< LDVSSAUpdater >::PHI_begin ( PhiT * PHI )

inlinestatic

Definition at line 4030 of file InstrRefBasedImpl.cpp.

References PHI.

◆ PHI_end()

static PHI_iterator llvm::SSAUpdaterTraits< LDVSSAUpdater >::PHI_end ( PhiT * PHI )

inlinestatic

Definition at line 4032 of file InstrRefBasedImpl.cpp.

References PHI.

◆ ValueIsNewPHI()

static LDVSSAPhi * llvm::SSAUpdaterTraits< LDVSSAUpdater >::ValueIsNewPHI	(	BlockValueNum	Val,
		LDVSSAUpdater *	Updater
	)

inlinestatic

ValueIsNewPHI - Like ValueIsPHI but also check if the PHI has no source operands, i.e., it was just added.

Definition at line 4083 of file InstrRefBasedImpl.cpp.

References PHI.

◆ ValueIsPHI()

static LDVSSAPhi * llvm::SSAUpdaterTraits< LDVSSAUpdater >::ValueIsPHI	(	BlockValueNum	Val,
		LDVSSAUpdater *	Updater
	)

inlinestatic

ValueIsPHI - Check if the instruction that defines the specified value is a PHI instruction.

Definition at line 4077 of file InstrRefBasedImpl.cpp.

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

lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.cpp

Classes

Public Types

Static Public Member Functions

Detailed Description

Member Typedef Documentation

◆ BlkSucc_iterator

◆ BlkT

◆ PhiT

◆ ValT

Member Function Documentation

◆ AddPHIOperand()

◆ BlkSucc_begin()

◆ BlkSucc_end()

◆ CreateEmptyPHI()

◆ FindPredecessorBlocks()

◆ GetPHIValue()

◆ GetPoisonVal()

◆ PHI_begin()

◆ PHI_end()

◆ ValueIsNewPHI()

◆ ValueIsPHI()