llvm::VNInfo Class Reference

#include <LiveInterval.h>

Collaboration diagram for llvm::VNInfo:

List of all members.

Public Types
typedef BumpPtrAllocator	Allocator
Public Member Functions
	VNInfo (unsigned i, SlotIndex d)
	VNInfo constructor.
	VNInfo (unsigned i, const VNInfo &orig)
	VNInfo construtor, copies values from orig, except for the value number.
void	copyFrom (VNInfo &src)
	Copy from the parameter into this VNInfo.
bool	isPHIDef () const
bool	isUnused () const
	Returns true if this value is unused.
void	markUnused ()
	Mark this value as unused.
Public Attributes
unsigned	id
	The ID number of this value.
SlotIndex	def
	The index of the defining instruction.

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Detailed Description

VNInfo - Value Number Information. This class holds information about a machine level values, including definition and use points.

Definition at line 44 of file LiveInterval.h.

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Member Typedef Documentation

typedef BumpPtrAllocator llvm::VNInfo::Allocator

Definition at line 46 of file LiveInterval.h.

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Constructor & Destructor Documentation

llvm::VNInfo::VNInfo	(	unsigned	i,
		SlotIndex	d
	)		[inline]

VNInfo constructor.

Definition at line 55 of file LiveInterval.h.

llvm::VNInfo::VNInfo	(	unsigned	i,
		const VNInfo &	orig
	)		[inline]

VNInfo construtor, copies values from orig, except for the value number.

Definition at line 60 of file LiveInterval.h.

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Member Function Documentation

void llvm::VNInfo::copyFrom

(

VNInfo &

src

)

[inline]

Copy from the parameter into this VNInfo.

Definition at line 65 of file LiveInterval.h.

References def.

Referenced by llvm::LiveRange::MergeValueNumberInto().

bool llvm::VNInfo::isPHIDef

(

)

const [inline]

Returns true if this value is defined by a PHI instruction (or was, PHI instructions may have been eliminated). PHI-defs begin at a block boundary, all other defs begin at register or EC slots.

Definition at line 73 of file LiveInterval.h.

References def, and llvm::SlotIndex::isBlock().

Referenced by llvm::ConnectedVNInfoEqClasses::Classify(), llvm::ScheduleDAGMILive::computeCyclicCriticalPath(), llvm::LiveIntervals::computeDeadValues(), llvm::LiveIntervals::hasPHIKill(), isRematerializable(), llvm::LiveRange::print(), and llvm::LiveIntervals::shrinkToUses().

bool llvm::VNInfo::isUnused

(

)

const [inline]

Returns true if this value is unused.

Definition at line 76 of file LiveInterval.h.

References def, and llvm::SlotIndex::isValid().

Referenced by llvm::ConnectedVNInfoEqClasses::Classify(), llvm::LiveIntervals::computeDeadValues(), llvm::SplitEditor::finish(), llvm::LiveIntervals::hasPHIKill(), isRematerializable(), llvm::LiveRange::print(), llvm::LiveRange::RenumberValues(), and llvm::LiveIntervals::shrinkToUses().

void llvm::VNInfo::markUnused

(

)

[inline]

Mark this value as unused.

Definition at line 79 of file LiveInterval.h.

References def.

Referenced by llvm::LiveIntervals::computeDeadValues().

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Member Data Documentation

SlotIndex llvm::VNInfo::def

The index of the defining instruction.

Definition at line 52 of file LiveInterval.h.

Referenced by llvm::ScheduleDAGInstrs::addVRegUseDeps(), llvm::LiveRangeEdit::canRematerializeAt(), llvm::ConnectedVNInfoEqClasses::Classify(), llvm::ScheduleDAGMILive::computeCyclicCriticalPath(), llvm::LiveIntervals::computeDeadValues(), copyFrom(), llvm::SplitEditor::enterIntvAfter(), llvm::SplitEditor::enterIntvAtEnd(), llvm::SplitEditor::enterIntvBefore(), llvm::SplitEditor::finish(), llvm::LiveIntervals::hasPHIKill(), isPHIDef(), isRematerializable(), isUnused(), llvm::SplitEditor::leaveIntvAfter(), llvm::SplitEditor::leaveIntvAtTop(), llvm::SplitEditor::leaveIntvBefore(), markUnused(), llvm::LiveRange::print(), llvm::LiveRange::Query(), and llvm::LiveIntervals::shrinkToUses().

unsigned llvm::VNInfo::id

The ID number of this value.

Definition at line 49 of file LiveInterval.h.

Referenced by llvm::ConnectedVNInfoEqClasses::Classify(), llvm::LiveRange::containsValue(), llvm::ConnectedVNInfoEqClasses::Distribute(), llvm::SplitEditor::enterIntvAfter(), llvm::SplitEditor::enterIntvBefore(), llvm::ConnectedVNInfoEqClasses::getEqClass(), llvm::LiveRange::join(), llvm::SplitEditor::leaveIntvAfter(), llvm::SplitEditor::leaveIntvBefore(), llvm::LiveRange::MergeValueNumberInto(), llvm::operator<<(), and llvm::LiveRange::RenumberValues().

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

• LiveInterval.h