SlotIndex - An opaque wrapper around machine indexes. More...

#include <SlotIndexes.h>

Public Types
enum	{ InstrDist = 4 * Slot_Count }
Public Member Functions
	SlotIndex ()
	Construct an invalid index.
	SlotIndex (const SlotIndex &li, Slot s)
bool	isValid () const
LLVM_EXPLICIT	operator bool () const
	Return true for a valid index.
void	print (raw_ostream &os) const
	Print this index to the given raw_ostream.
void	dump () const
	Dump this index to stderr.
bool	operator== (SlotIndex other) const
	Compare two SlotIndex objects for equality.
bool	operator!= (SlotIndex other) const
	Compare two SlotIndex objects for inequality.
bool	operator< (SlotIndex other) const
bool	operator<= (SlotIndex other) const
bool	operator> (SlotIndex other) const
bool	operator>= (SlotIndex other) const
int	distance (SlotIndex other) const
	Return the distance from this index to the given one.
int	getInstrDistance (SlotIndex other) const
bool	isBlock () const
	isBlock - Returns true if this is a block boundary slot.
bool	isEarlyClobber () const
	isEarlyClobber - Returns true if this is an early-clobber slot.
bool	isRegister () const
bool	isDead () const
	isDead - Returns true if this is a dead def kill slot.
SlotIndex	getBaseIndex () const
SlotIndex	getBoundaryIndex () const
SlotIndex	getRegSlot (bool EC=false) const
SlotIndex	getDeadSlot () const
	Returns the dead def kill slot for the current instruction.
SlotIndex	getNextSlot () const
SlotIndex	getNextIndex () const
SlotIndex	getPrevSlot () const
SlotIndex	getPrevIndex () const
Static Public Member Functions
static bool	isSameInstr (SlotIndex A, SlotIndex B)
	isSameInstr - Return true if A and B refer to the same instruction.
static bool	isEarlierInstr (SlotIndex A, SlotIndex B)
Friends
class	SlotIndexes

Detailed Description

SlotIndex - An opaque wrapper around machine indexes.

Definition at line 92 of file SlotIndexes.h.

Member Enumeration Documentation

anonymous enum

Enumerator:

InstrDist

The default distance between instructions as returned by distance(). This may vary as instructions are inserted and removed.

Definition at line 143 of file SlotIndexes.h.

Constructor & Destructor Documentation

llvm::SlotIndex::SlotIndex ( ) [inline]

Construct an invalid index.

Definition at line 150 of file SlotIndexes.h.

Referenced by getBaseIndex(), getBoundaryIndex(), getDeadSlot(), getNextIndex(), getNextSlot(), getPrevIndex(), getPrevSlot(), and getRegSlot().

llvm::SlotIndex::SlotIndex	(	const SlotIndex &	li,
		Slot	s
	)		`[inline]`

Definition at line 153 of file SlotIndexes.h.

References llvm::PointerIntPair< PointerTy, IntBits, IntType, PtrTraits >::getPointer().

Member Function Documentation

int llvm::SlotIndex::distance ( SlotIndex other ) const [inline]

Return the distance from this index to the given one.

Definition at line 217 of file SlotIndexes.h.

void SlotIndex::dump ( ) const

Dump this index to stderr.

Definition at line 245 of file SlotIndexes.cpp.

References llvm::dbgs(), and print().

SlotIndex llvm::SlotIndex::getBaseIndex ( ) const [inline]

Returns the base index for associated with this index. The base index is the one associated with the Slot_Block slot for the instruction pointed to by this index.

Definition at line 244 of file SlotIndexes.h.

References SlotIndex().

Referenced by llvm::SplitEditor::enterIntvBefore(), findInsertLocation(), llvm::LiveRange::isLocal(), llvm::LiveRange::isZeroLength(), llvm::SplitEditor::leaveIntvBefore(), llvm::LiveRange::Query(), llvm::SplitEditor::splitLiveThroughBlock(), and llvm::SplitEditor::splitRegOutBlock().

SlotIndex llvm::SlotIndex::getBoundaryIndex ( ) const [inline]

Returns the boundary index for associated with this index. The boundary index is the one associated with the Slot_Block slot for the instruction pointed to by this index.

Definition at line 251 of file SlotIndexes.h.

References SlotIndex().

Referenced by llvm::SplitEditor::enterIntvAfter(), llvm::LiveRange::isLocal(), llvm::SplitEditor::leaveIntvAfter(), llvm::SplitEditor::splitLiveThroughBlock(), and llvm::SplitEditor::splitRegInBlock().

SlotIndex llvm::SlotIndex::getDeadSlot ( ) const [inline]

Returns the dead def kill slot for the current instruction.

Definition at line 262 of file SlotIndexes.h.

References SlotIndex().

Referenced by llvm::LiveIntervals::computeDeadValues(), llvm::LiveRange::createDeadDef(), llvm::LiveIntervals::repairIntervalsInRange(), and llvm::LiveIntervals::shrinkToUses().

int llvm::SlotIndex::getInstrDistance ( SlotIndex other ) const [inline]

Return the scaled distance from this index to the given one, where all slots on the same instruction have zero distance.

Definition at line 223 of file SlotIndexes.h.

References llvm::IndexListEntry::getIndex().

SlotIndex llvm::SlotIndex::getNextIndex ( ) const [inline]

Returns the next index. This is the index corresponding to the this index's slot, but for the next instruction.

Definition at line 282 of file SlotIndexes.h.

References SlotIndex().

SlotIndex llvm::SlotIndex::getNextSlot ( ) const [inline]

Returns the next slot in the index list. This could be either the next slot for the instruction pointed to by this index or, if this index is a STORE, the first slot for the next instruction. WARNING: This method is considerably more expensive than the methods that return specific slots (getUseIndex(), etc). If you can - please use one of those methods.

Definition at line 272 of file SlotIndexes.h.

References SlotIndex().

Referenced by llvm::SplitEditor::leaveIntvAfter(), and llvm::SplitEditor::leaveIntvBefore().

SlotIndex llvm::SlotIndex::getPrevIndex ( ) const [inline]

Returns the previous index. This is the index corresponding to this index's slot, but for the previous instruction.

Definition at line 302 of file SlotIndexes.h.

References SlotIndex().

Referenced by findInsertLocation().

SlotIndex llvm::SlotIndex::getPrevSlot ( ) const [inline]

Returns the previous slot in the index list. This could be either the previous slot for the instruction pointed to by this index or, if this index is a Slot_Block, the last slot for the previous instruction. WARNING: This method is considerably more expensive than the methods that return specific slots (getUseIndex(), etc). If you can - please use one of those methods.

Definition at line 292 of file SlotIndexes.h.

References SlotIndex().

Referenced by llvm::SplitEditor::enterIntvAtEnd(), llvm::LiveRangeCalc::extend(), llvm::LiveRange::extendInBlock(), llvm::LiveRange::getVNInfoBefore(), llvm::LiveIntervals::repairIntervalsInRange(), llvm::LiveIntervals::shrinkToUses(), and llvm::MachineBasicBlock::SplitCriticalEdge().

SlotIndex llvm::SlotIndex::getRegSlot ( bool EC = false ) const [inline]