llvm::LiveIntervalUnion Class Reference

Union of live intervals that are strong candidates for coalescing into a single register (either physical or virtual depending on the context). More...

#include "llvm/CodeGen/LiveIntervalUnion.h"

Classes
class	Array
class	Query
	Query interferences between a single live virtual register and a live interval union. More...

Public Types
using	SegmentIter = LiveSegments::iterator
using	ConstSegmentIter = LiveSegments::const_iterator
	Const version of SegmentIter.
using	Allocator = LiveSegments::Allocator
using	Map = LiveSegments

Public Member Functions
	LiveIntervalUnion (Allocator &a)
SegmentIter	begin ()
SegmentIter	end ()
SegmentIter	find (SlotIndex x)
ConstSegmentIter	begin () const
ConstSegmentIter	end () const
ConstSegmentIter	find (SlotIndex x) const
bool	empty () const
SlotIndex	startIndex () const
SlotIndex	endIndex () const
const Map &	getMap () const
unsigned	getTag () const
	getTag - Return an opaque tag representing the current state of the union.
bool	changedSince (unsigned tag) const
	changedSince - Return true if the union change since getTag returned tag.
void	unify (const LiveInterval &VirtReg, const LiveRange &Range)
void	extract (const LiveInterval &VirtReg, const LiveRange &Range)
void	clear ()
void	print (raw_ostream &OS, const TargetRegisterInfo *TRI) const
void	verify (LiveVirtRegBitSet &VisitedVRegs)
const LiveInterval *	getOneVReg () const
	NDEBUG.

Detailed Description

Union of live intervals that are strong candidates for coalescing into a single register (either physical or virtual depending on the context).

We expect the constituent live intervals to be disjoint, although we may eventually make exceptions to handle value-based interference.

Definition at line 42 of file LiveIntervalUnion.h.

Member Typedef Documentation

Allocator

using llvm::LiveIntervalUnion::Allocator = LiveSegments::Allocator

Definition at line 58 of file LiveIntervalUnion.h.

ConstSegmentIter

using llvm::LiveIntervalUnion::ConstSegmentIter = LiveSegments::const_iterator

Const version of SegmentIter.

Definition at line 55 of file LiveIntervalUnion.h.

Map

using llvm::LiveIntervalUnion::Map = LiveSegments

Definition at line 81 of file LiveIntervalUnion.h.

SegmentIter

using llvm::LiveIntervalUnion::SegmentIter = LiveSegments::iterator

Definition at line 52 of file LiveIntervalUnion.h.

Constructor & Destructor Documentation

LiveIntervalUnion()

llvm::LiveIntervalUnion::LiveIntervalUnion ( Allocator & a )

inlineexplicit

Definition at line 65 of file LiveIntervalUnion.h.

Referenced by llvm::LiveIntervalUnion::Array::clear(), llvm::LiveIntervalUnion::Array::init(), llvm::LiveIntervalUnion::Query::init(), llvm::LiveIntervalUnion::Array::operator[](), llvm::LiveIntervalUnion::Array::operator[](), llvm::LiveIntervalUnion::Query::Query(), and llvm::LiveIntervalUnion::Query::reset().

Member Function Documentation

begin() [1/2]

SegmentIter llvm::LiveIntervalUnion::begin ( )

inline

Definition at line 69 of file LiveIntervalUnion.h.

begin() [2/2]

ConstSegmentIter llvm::LiveIntervalUnion::begin ( ) const

inline

Definition at line 72 of file LiveIntervalUnion.h.

changedSince()

bool llvm::LiveIntervalUnion::changedSince ( unsigned tag ) const

inline

changedSince - Return true if the union change since getTag returned tag.

Definition at line 88 of file LiveIntervalUnion.h.

Referenced by llvm::LiveIntervalUnion::Query::init().

clear()

void llvm::LiveIntervalUnion::clear ( )

inline

Definition at line 97 of file LiveIntervalUnion.h.

Referenced by llvm::LiveIntervalUnion::Array::init().

empty()

bool llvm::LiveIntervalUnion::empty ( ) const

inline

Definition at line 76 of file LiveIntervalUnion.h.

Referenced by getOneVReg(), and print().

end() [1/2]

SegmentIter llvm::LiveIntervalUnion::end ( )

inline

Definition at line 70 of file LiveIntervalUnion.h.

end() [2/2]

ConstSegmentIter llvm::LiveIntervalUnion::end ( ) const

inline

Definition at line 73 of file LiveIntervalUnion.h.

endIndex()

SlotIndex llvm::LiveIntervalUnion::endIndex ( ) const

inline

Definition at line 78 of file LiveIntervalUnion.h.

extract()

void LiveIntervalUnion::extract	(	const LiveInterval &	VirtReg,
		const LiveRange &	Range )

Definition at line 56 of file LiveIntervalUnion.cpp.

References assert(), and Range.

find() [1/2]

SegmentIter llvm::LiveIntervalUnion::find ( SlotIndex x )

inline

Definition at line 71 of file LiveIntervalUnion.h.

find() [2/2]

ConstSegmentIter llvm::LiveIntervalUnion::find ( SlotIndex x ) const

inline

Definition at line 74 of file LiveIntervalUnion.h.

getMap()

const Map & llvm::LiveIntervalUnion::getMap ( ) const

inline

Definition at line 82 of file LiveIntervalUnion.h.

getOneVReg()

const LiveInterval * LiveIntervalUnion::getOneVReg

(

)

const

NDEBUG.

Definition at line 103 of file LiveIntervalUnion.cpp.

References empty().

getTag()

unsigned llvm::LiveIntervalUnion::getTag ( ) const

inline

getTag - Return an opaque tag representing the current state of the union.

Definition at line 85 of file LiveIntervalUnion.h.

Referenced by llvm::LiveIntervalUnion::Query::reset().

print()

void LiveIntervalUnion::print	(	raw_ostream &	OS,
		const TargetRegisterInfo *	TRI ) const

Definition at line 83 of file LiveIntervalUnion.cpp.

References empty(), llvm::printReg(), and TRI.

startIndex()

SlotIndex llvm::LiveIntervalUnion::startIndex ( ) const

inline

Definition at line 77 of file LiveIntervalUnion.h.

unify()

void LiveIntervalUnion::unify	(	const LiveInterval &	VirtReg,
		const LiveRange &	Range )

Definition at line 28 of file LiveIntervalUnion.cpp.

References Range.

verify()

void LiveIntervalUnion::verify

(

LiveVirtRegBitSet &

VisitedVRegs

)

Definition at line 97 of file LiveIntervalUnion.cpp.

References llvm::SparseBitVector< ElementSize >::set().

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

• include/llvm/CodeGen/LiveIntervalUnion.h
• lib/CodeGen/LiveIntervalUnion.cpp