A live range for subregisters. More...

#include "llvm/CodeGen/LiveInterval.h"

Inheritance diagram for llvm::LiveInterval::SubRange:

Collaboration diagram for llvm::LiveInterval::SubRange:

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Public Member Functions
	SubRange (LaneBitmask LaneMask)
	Constructs a new SubRange object. More...

	SubRange (LaneBitmask LaneMask, const LiveRange &Other, BumpPtrAllocator &Allocator)
	Constructs a new SubRange object by copying liveness from `Other`. More...

void	print (raw_ostream &OS) const

void	dump () const

Public Member Functions inherited from llvm::LiveRange
iterator	begin ()

iterator	end ()

const_iterator	begin () const

const_iterator	end () const

vni_iterator	vni_begin ()

vni_iterator	vni_end ()

const_vni_iterator	vni_begin () const

const_vni_iterator	vni_end () const

	LiveRange (bool UseSegmentSet=false)
	Constructs a new LiveRange object. More...

	LiveRange (const LiveRange &Other, BumpPtrAllocator &Allocator)
	Constructs a new LiveRange object by copying segments and valnos from another LiveRange. More...

void	assign (const LiveRange &Other, BumpPtrAllocator &Allocator)
	Copies values numbers and live segments from `Other` into this range. More...

iterator	advanceTo (iterator I, SlotIndex Pos)
	advanceTo - Advance the specified iterator to point to the Segment containing the specified position, or end() if the position is past the end of the range. More...

const_iterator	advanceTo (const_iterator I, SlotIndex Pos) const

iterator	find (SlotIndex Pos)
	find - Return an iterator pointing to the first segment that ends after Pos, or end(). More...

const_iterator	find (SlotIndex Pos) const

void	clear ()

size_t	size () const

bool	hasAtLeastOneValue () const

bool	containsOneValue () const

unsigned	getNumValNums () const

VNInfo *	getValNumInfo (unsigned ValNo)
	getValNumInfo - Returns pointer to the specified val#. More...

const VNInfo *	getValNumInfo (unsigned ValNo) const

bool	containsValue (const VNInfo *VNI) const
	containsValue - Returns true if VNI belongs to this range. More...

VNInfo *	getNextValue (SlotIndex def, VNInfo::Allocator &VNInfoAllocator)
	getNextValue - Create a new value number and return it. More...

VNInfo *	createDeadDef (SlotIndex Def, VNInfo::Allocator &VNIAlloc)
	createDeadDef - Make sure the range has a value defined at Def. More...

VNInfo *	createDeadDef (VNInfo *VNI)
	Create a def of value `VNI`. More...

VNInfo *	createValueCopy (const VNInfo *orig, VNInfo::Allocator &VNInfoAllocator)
	Create a copy of the given value. More...

void	RenumberValues ()
	RenumberValues - Renumber all values in order of appearance and remove unused values. More...

VNInfo *	MergeValueNumberInto (VNInfo V1, VNInfo V2)
	MergeValueNumberInto - This method is called when two value numbers are found to be equivalent. More...

void	MergeSegmentsInAsValue (const LiveRange &RHS, VNInfo *LHSValNo)
	Merge all of the live segments of a specific val# in RHS into this live range as the specified value number. More...

void	MergeValueInAsValue (const LiveRange &RHS, const VNInfo RHSValNo, VNInfo LHSValNo)
	MergeValueInAsValue - Merge all of the segments of a specific val# in RHS into this live range as the specified value number. More...

bool	empty () const

SlotIndex	beginIndex () const
	beginIndex - Return the lowest numbered slot covered. More...

SlotIndex	endIndex () const
	endNumber - return the maximum point of the range of the whole, exclusive. More...

bool	expiredAt (SlotIndex index) const

bool	liveAt (SlotIndex index) const

const Segment *	getSegmentContaining (SlotIndex Idx) const
	Return the segment that contains the specified index, or null if there is none. More...

Segment *	getSegmentContaining (SlotIndex Idx)
	Return the live segment that contains the specified index, or null if there is none. More...

VNInfo *	getVNInfoAt (SlotIndex Idx) const
	getVNInfoAt - Return the VNInfo that is live at Idx, or NULL. More...

VNInfo *	getVNInfoBefore (SlotIndex Idx) const
	getVNInfoBefore - Return the VNInfo that is live up to but not necessarilly including Idx, or NULL. More...

iterator	FindSegmentContaining (SlotIndex Idx)
	Return an iterator to the segment that contains the specified index, or end() if there is none. More...

const_iterator	FindSegmentContaining (SlotIndex Idx) const

bool	overlaps (const LiveRange &other) const
	overlaps - Return true if the intersection of the two live ranges is not empty. More...

bool	overlaps (const LiveRange &Other, const CoalescerPair &CP, const SlotIndexes &) const
	overlaps - Return true if the two ranges have overlapping segments that are not coalescable according to CP. More...

bool	overlaps (SlotIndex Start, SlotIndex End) const
	overlaps - Return true if the live range overlaps an interval specified by [Start, End). More...

bool	overlapsFrom (const LiveRange &Other, const_iterator StartPos) const
	overlapsFrom - Return true if the intersection of the two live ranges is not empty. More...

bool	covers (const LiveRange &Other) const
	Returns true if all segments of the `Other` live range are completely covered by this live range. More...

iterator	addSegment (Segment S)
	Add the specified Segment to this range, merging segments as appropriate. More...

std::pair< VNInfo *, bool >	extendInBlock (ArrayRef< SlotIndex > Undefs, SlotIndex StartIdx, SlotIndex Kill)
	Attempt to extend a value defined after `StartIdx` to include `Use`. More...

VNInfo *	extendInBlock (SlotIndex StartIdx, SlotIndex Kill)
	Simplified version of the above "extendInBlock", which assumes that no register lanes are undefined by <def,read-undef> operands. More...

void	join (LiveRange &Other, const int ValNoAssignments, const int RHSValNoAssignments, SmallVectorImpl< VNInfo *> &NewVNInfo)
	join - Join two live ranges (this, and other) together. More...

bool	isLocal (SlotIndex Start, SlotIndex End) const
	True iff this segment is a single segment that lies between the specified boundaries, exclusively. More...

void	removeSegment (SlotIndex Start, SlotIndex End, bool RemoveDeadValNo=false)
	Remove the specified segment from this range. More...

void	removeSegment (Segment S, bool RemoveDeadValNo=false)

iterator	removeSegment (iterator I)
	Remove segment pointed to by iterator `I` from this range. More...

LiveQueryResult	Query (SlotIndex Idx) const
	Query Liveness at Idx. More...

void	removeValNo (VNInfo *ValNo)
	removeValNo - Remove all the segments defined by the specified value#. More...

bool	isZeroLength (SlotIndexes *Indexes) const
	Returns true if the live range is zero length, i.e. More...

bool	isLiveAtIndexes (ArrayRef< SlotIndex > Slots) const

bool	operator< (const LiveRange &other) const

bool	isUndefIn (ArrayRef< SlotIndex > Undefs, SlotIndex Begin, SlotIndex End) const
	Returns true if there is an explicit "undef" between `Begin` `End`. More...

void	flushSegmentSet ()
	Flush segment set into the regular segment vector. More...

void	print (raw_ostream &OS) const

void	dump () const

void	verify () const
	Walk the range and assert if any invariants fail to hold. More...

Public Attributes
SubRange *	Next = nullptr

LaneBitmask	LaneMask

Public Attributes inherited from llvm::LiveRange
Segments	segments

VNInfoList	valnos

std::unique_ptr< SegmentSet >	segmentSet

Additional Inherited Members
Public Types inherited from llvm::LiveRange
using	Segments = SmallVector< Segment, 2 >

using	VNInfoList = SmallVector< VNInfo *, 2 >

using	SegmentSet = std::set< Segment >

using	iterator = Segments::iterator

using	const_iterator = Segments::const_iterator

using	vni_iterator = VNInfoList::iterator

using	const_vni_iterator = VNInfoList::const_iterator

Protected Member Functions inherited from llvm::LiveRange
void	append (const LiveRange::Segment S)
	Append a segment to the list of segments. More...