#include <MachineLoopInfo.h>

Inheritance diagram for llvm::MachineLoopInfo:

Collaboration diagram for llvm::MachineLoopInfo:

Public Types
typedef LoopInfoBase < MachineBasicBlock, MachineLoop >::iterator	iterator
Public Member Functions
	MachineLoopInfo ()
LoopInfoBase < MachineBasicBlock, MachineLoop > &	getBase ()
iterator	begin () const
iterator	end () const
bool	empty () const
MachineLoop *	getLoopFor (const MachineBasicBlock *BB) const
const MachineLoop *	operator[] (const MachineBasicBlock *BB) const
unsigned	getLoopDepth (const MachineBasicBlock *BB) const
bool	isLoopHeader (MachineBasicBlock *BB) const
virtual bool	runOnMachineFunction (MachineFunction &F)
virtual void	releaseMemory ()
virtual void	getAnalysisUsage (AnalysisUsage &AU) const
MachineLoop *	removeLoop (iterator I)
void	changeLoopFor (MachineBasicBlock BB, MachineLoop L)
void	changeTopLevelLoop (MachineLoop OldLoop, MachineLoop NewLoop)
void	addTopLevelLoop (MachineLoop *New)
void	removeBlock (MachineBasicBlock *BB)
Static Public Attributes
static char	ID = 0
Friends
class	LoopBase< MachineBasicBlock, MachineLoop >

Detailed Description

Definition at line 72 of file MachineLoopInfo.h.

Member Typedef Documentation

typedef LoopInfoBase<MachineBasicBlock, MachineLoop>::iterator llvm::MachineLoopInfo::iterator

iterator/begin/end - The interface to the top-level loops in the current function.

Definition at line 91 of file MachineLoopInfo.h.

Constructor & Destructor Documentation

llvm::MachineLoopInfo::MachineLoopInfo ( ) [inline]

Definition at line 82 of file MachineLoopInfo.h.

References llvm::PassRegistry::getPassRegistry(), and llvm::initializeMachineLoopInfoPass().

Member Function Documentation

void llvm::MachineLoopInfo::addTopLevelLoop ( MachineLoop * New ) [inline]

addTopLevelLoop - This adds the specified loop to the collection of top-level loops.

Definition at line 148 of file MachineLoopInfo.h.

References llvm::LoopInfoBase< BlockT, LoopT >::addTopLevelLoop().

iterator llvm::MachineLoopInfo::begin ( ) const [inline]

Definition at line 92 of file MachineLoopInfo.h.

References llvm::LoopInfoBase< BlockT, LoopT >::begin().

void llvm::MachineLoopInfo::changeLoopFor	(	MachineBasicBlock *	BB,
		MachineLoop *	L
	)		`[inline]`

changeLoopFor - Change the top-level loop that contains BB to the specified loop. This should be used by transformations that restructure the loop hierarchy tree.

Definition at line 136 of file MachineLoopInfo.h.

References llvm::LoopInfoBase< BlockT, LoopT >::changeLoopFor().

void llvm::MachineLoopInfo::changeTopLevelLoop	(	MachineLoop *	OldLoop,
		MachineLoop *	NewLoop
	)		`[inline]`

changeTopLevelLoop - Replace the specified loop in the top-level loops list with the indicated loop.

Definition at line 142 of file MachineLoopInfo.h.

References llvm::LoopInfoBase< BlockT, LoopT >::changeTopLevelLoop().

bool llvm::MachineLoopInfo::empty ( ) const [inline]

Definition at line 94 of file MachineLoopInfo.h.

References llvm::LoopInfoBase< BlockT, LoopT >::empty().

iterator llvm::MachineLoopInfo::end ( ) const [inline]

Definition at line 93 of file MachineLoopInfo.h.

References llvm::LoopInfoBase< BlockT, LoopT >::end().

void MachineLoopInfo::getAnalysisUsage ( AnalysisUsage & AU ) const [virtual]

getAnalysisUsage - Subclasses that override getAnalysisUsage must call this.

For MachineFunctionPasses, calling AU.preservesCFG() indicates that the pass does not modify the MachineBasicBlock CFG.

Reimplemented from llvm::MachineFunctionPass.

Definition at line 43 of file MachineLoopInfo.cpp.

References llvm::AnalysisUsage::addRequired(), and llvm::AnalysisUsage::setPreservesAll().

LoopInfoBase<MachineBasicBlock, MachineLoop>& llvm::MachineLoopInfo::getBase ( ) [inline]

Definition at line 86 of file MachineLoopInfo.h.

References LI.

unsigned llvm::MachineLoopInfo::getLoopDepth ( const MachineBasicBlock * BB ) const [inline]

getLoopDepth - Return the loop nesting level of the specified block...

Definition at line 111 of file MachineLoopInfo.h.

References llvm::LoopInfoBase< BlockT, LoopT >::getLoopDepth().

Referenced by llvm::VLIWMachineScheduler::schedule().

MachineLoop* llvm::MachineLoopInfo::getLoopFor ( const MachineBasicBlock * BB ) const [inline]

getLoopFor - Return the inner most loop that BB lives in. If a basic block is in no loop (for example the entry node), null is returned.

Definition at line 99 of file MachineLoopInfo.h.

References llvm::LoopInfoBase< BlockT, LoopT >::getLoopFor().

Referenced by llvm::VirtRegAuxInfo::CalculateWeightAndHint(), and emitBasicBlockLoopComments().

bool llvm::MachineLoopInfo::isLoopHeader ( MachineBasicBlock * BB ) const [inline]

Definition at line 116 of file MachineLoopInfo.h.

References llvm::LoopInfoBase< BlockT, LoopT >::isLoopHeader().

const MachineLoop* llvm::MachineLoopInfo::operator[] ( const MachineBasicBlock * BB ) const [inline]

operator[] - same as getLoopFor...

Definition at line 105 of file MachineLoopInfo.h.

References llvm::LoopInfoBase< BlockT, LoopT >::getLoopFor().

virtual void llvm::MachineLoopInfo::releaseMemory ( ) [inline, virtual]

releaseMemory() - This member can be implemented by a pass if it wants to be able to release its memory when it is no longer needed. The default behavior of passes is to hold onto memory for the entire duration of their lifetime (which is the entire compile time). For pipelined passes, this is not a big deal because that memory gets recycled every time the pass is invoked on another program unit. For IP passes, it is more important to free memory when it is unused.

Optionally implement this function to release pass memory when it is no longer used.

Reimplemented from llvm::Pass.

Definition at line 124 of file MachineLoopInfo.h.

References llvm::LoopInfoBase< BlockT, LoopT >::releaseMemory().

void llvm::MachineLoopInfo::removeBlock ( MachineBasicBlock * BB ) [inline]

removeBlock - This method completely removes BB from all data structures, including all of the Loop objects it is nested in and our mapping from MachineBasicBlocks to loops.

Definition at line 155 of file MachineLoopInfo.h.

References llvm::LoopInfoBase< BlockT, LoopT >::removeBlock().

MachineLoop* llvm::MachineLoopInfo::removeLoop ( iterator I ) [inline]

removeLoop - This removes the specified top-level loop from this loop info object. The loop is not deleted, as it will presumably be inserted into another loop.

Definition at line 131 of file MachineLoopInfo.h.

References llvm::LoopInfoBase< BlockT, LoopT >::removeLoop().

bool MachineLoopInfo::runOnMachineFunction ( MachineFunction & F ) [virtual]

runOnFunction - Calculate the natural loop information.

Implements llvm::MachineFunctionPass.

Definition at line 37 of file MachineLoopInfo.cpp.

References LI.