Struct used to represent the placement of a repairing point for a given operand. More...

#include "llvm/CodeGen/GlobalISel/RegBankSelect.h"

Public Types
enum	RepairingKind { None , Insert , Reassign , Impossible }
	Define the kind of action this repairing needs. More...

Convenient types for a list of insertion points.
using	InsertionPoints = SmallVector< std::unique_ptr< InsertPoint >, 2 >

using	insertpt_iterator = InsertionPoints::iterator

using	const_insertpt_iterator = InsertionPoints::const_iterator

Public Member Functions
	RepairingPlacement (MachineInstr &MI, unsigned OpIdx, const TargetRegisterInfo &TRI, Pass &P, RepairingKind Kind=RepairingKind::Insert)
	Create a repairing placement for the `OpIdx-th` operand of `MI`.

void	switchTo (RepairingKind NewKind)
	Change the type of this repairing placement to `NewKind`.

Getters.
RepairingKind	getKind () const

unsigned	getOpIdx () const

bool	canMaterialize () const

bool	hasSplit ()

Overloaded methods to add an insertion point.
Add a MBBInsertionPoint to the list of InsertPoints.
void	addInsertPoint (MachineBasicBlock &MBB, bool Beginning)

void	addInsertPoint (MachineInstr &MI, bool Before)
	Add a InstrInsertionPoint to the list of InsertPoints.

void	addInsertPoint (MachineBasicBlock &Src, MachineBasicBlock &Dst)
	Add an EdgeInsertionPoint (`Src`, `Dst`) to the list of InsertPoints.

void	addInsertPoint (InsertPoint &Point)
	Add an InsertPoint to the list of insert points.

Accessors related to the insertion points.
insertpt_iterator	begin ()

insertpt_iterator	end ()

const_insertpt_iterator	begin () const

const_insertpt_iterator	end () const

unsigned	getNumInsertPoints () const

Detailed Description

Struct used to represent the placement of a repairing point for a given operand.

Definition at line 314 of file RegBankSelect.h.

Member Typedef Documentation

◆ const_insertpt_iterator

using llvm::RegBankSelect::RepairingPlacement::const_insertpt_iterator = InsertionPoints::const_iterator

Definition at line 332 of file RegBankSelect.h.

◆ InsertionPoints

using llvm::RegBankSelect::RepairingPlacement::InsertionPoints = SmallVector<std::unique_ptr<InsertPoint>, 2>

Definition at line 330 of file RegBankSelect.h.

◆ insertpt_iterator

using llvm::RegBankSelect::RepairingPlacement::insertpt_iterator = InsertionPoints::iterator

Definition at line 331 of file RegBankSelect.h.

Member Enumeration Documentation

◆ RepairingKind

enum llvm::RegBankSelect::RepairingPlacement::RepairingKind

Define the kind of action this repairing needs.

Enumerator
None	Nothing to repair, just drop this action.
Insert	Reparing code needs to happen before InsertPoints.
Reassign	(Re)assign the register bank of the operand.
Impossible	Mark this repairing placement as impossible.

Definition at line 317 of file RegBankSelect.h.

Constructor & Destructor Documentation

◆ RepairingPlacement()

RegBankSelect::RepairingPlacement::RepairingPlacement	(	MachineInstr &	MI,
		unsigned	OpIdx,
		const TargetRegisterInfo &	TRI,
		Pass &	P,
		RepairingPlacement::RepairingKind	Kind = `RepairingKind::Insert`
	)

Create a repairing placement for the OpIdx-th operand of MI.

TRI is used to make some checks on the register aliases if the machine operand is a physical register. P is used to to update liveness information and such when materializing the points.

Definition at line 761 of file RegBankSelect.cpp.

References addInsertPoint(), assert(), Before, llvm::MachineBasicBlock::begin(), llvm::MachineBasicBlock::end(), End, llvm::MachineBasicBlock::getLastNonDebugInstr(), llvm::MachineOperand::getReg(), Insert, llvm::MachineOperand::isDef(), llvm::MachineOperand::isReg(), MI, and llvm::RegBankSelect::TRI.

Member Function Documentation

◆ addInsertPoint() [1/4]

void RegBankSelect::RepairingPlacement::addInsertPoint ( RegBankSelect::InsertPoint & Point )

Add an InsertPoint to the list of insert points.

This method takes the ownership of &Point.

Definition at line 870 of file RegBankSelect.cpp.

References llvm::RegBankSelect::InsertPoint::canMaterialize(), and llvm::RegBankSelect::InsertPoint::isSplit().

◆ addInsertPoint() [2/4]

void RegBankSelect::RepairingPlacement::addInsertPoint	(	MachineBasicBlock &	MBB,
		bool	Beginning
	)

Definition at line 860 of file RegBankSelect.cpp.

References MBB.

Referenced by RepairingPlacement().

◆ addInsertPoint() [3/4]

void RegBankSelect::RepairingPlacement::addInsertPoint	(	MachineBasicBlock &	Src,
		MachineBasicBlock &	Dst
	)

Add an EdgeInsertionPoint (Src, Dst) to the list of InsertPoints.

Definition at line 865 of file RegBankSelect.cpp.

References P.

◆ addInsertPoint() [4/4]

void RegBankSelect::RepairingPlacement::addInsertPoint	(	MachineInstr &	MI,
		bool	Before
	)

Add a InstrInsertionPoint to the list of InsertPoints.

Definition at line 855 of file RegBankSelect.cpp.

References Before, and MI.

◆ begin() [1/2]

insertpt_iterator llvm::RegBankSelect::RepairingPlacement::begin ( )

inline

Definition at line 383 of file RegBankSelect.h.

References llvm::SmallVectorTemplateCommon< T, typename >::begin().

◆ begin() [2/2]

const_insertpt_iterator llvm::RegBankSelect::RepairingPlacement::begin ( ) const

inline

Definition at line 386 of file RegBankSelect.h.

References llvm::SmallVectorTemplateCommon< T, typename >::begin().

◆ canMaterialize()

bool llvm::RegBankSelect::RepairingPlacement::canMaterialize ( ) const

inline

Definition at line 364 of file RegBankSelect.h.

Referenced by llvm::RegBankSelect::computeMapping().

◆ end() [1/2]

insertpt_iterator llvm::RegBankSelect::RepairingPlacement::end ( )

inline

Definition at line 384 of file RegBankSelect.h.

References llvm::SmallVectorTemplateCommon< T, typename >::end().

◆ end() [2/2]

const_insertpt_iterator llvm::RegBankSelect::RepairingPlacement::end ( ) const

inline

Definition at line 387 of file RegBankSelect.h.

References llvm::SmallVectorTemplateCommon< T, typename >::end().

◆ getKind()

RepairingKind llvm::RegBankSelect::RepairingPlacement::getKind ( ) const

inline

Definition at line 362 of file RegBankSelect.h.

◆ getNumInsertPoints()

unsigned llvm::RegBankSelect::RepairingPlacement::getNumInsertPoints ( ) const

inline

Definition at line 389 of file RegBankSelect.h.

References llvm::SmallVectorBase< Size_T >::size().

Referenced by llvm::RegBankSelect::repairReg().

◆ getOpIdx()

unsigned llvm::RegBankSelect::RepairingPlacement::getOpIdx ( ) const

inline

Definition at line 363 of file RegBankSelect.h.

Referenced by llvm::RegBankSelect::tryAvoidingSplit().

◆ hasSplit()

bool llvm::RegBankSelect::RepairingPlacement::hasSplit ( )

inline

Definition at line 365 of file RegBankSelect.h.

Referenced by llvm::RegBankSelect::computeMapping(), and llvm::RegBankSelect::tryAvoidingSplit().

◆ switchTo()

void llvm::RegBankSelect::RepairingPlacement::switchTo ( RepairingKind NewKind )

inline

Change the type of this repairing placement to NewKind.

It is not possible to switch a repairing placement to the RepairingKind::Insert. There is no fundamental problem with that, but no uses as well, so do not support it for now.

Precondition: NewKind != RepairingKind::Insert

Postcondition: getKind() == NewKind

Definition at line 399 of file RegBankSelect.h.

References assert(), llvm::SmallVectorImpl< T >::clear(), Impossible, and Insert.

Referenced by llvm::RegBankSelect::tryAvoidingSplit().

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

include/llvm/CodeGen/GlobalISel/RegBankSelect.h
lib/CodeGen/GlobalISel/RegBankSelect.cpp

Public Types

Public Member Functions

Detailed Description

Member Typedef Documentation

◆ const_insertpt_iterator

◆ InsertionPoints

◆ insertpt_iterator

Member Enumeration Documentation

◆ RepairingKind

Constructor & Destructor Documentation

◆ RepairingPlacement()

Member Function Documentation

◆ addInsertPoint() [1/4]

◆ addInsertPoint() [2/4]

◆ addInsertPoint() [3/4]

◆ addInsertPoint() [4/4]

◆ begin() [1/2]

◆ begin() [2/2]

◆ canMaterialize()

◆ end() [1/2]

◆ end() [2/2]

◆ getKind()

◆ getNumInsertPoints()

◆ getOpIdx()

◆ hasSplit()

◆ switchTo()