#include <MachineBlockFrequencyInfo.h>

Inheritance diagram for llvm::MachineBlockFrequencyInfo:

Collaboration diagram for llvm::MachineBlockFrequencyInfo:

Public Member Functions
	MachineBlockFrequencyInfo ()

	~MachineBlockFrequencyInfo ()

void	getAnalysisUsage (AnalysisUsage &AU) const

bool	runOnMachineFunction (MachineFunction &F)

BlockFrequency	getBlockFreq (const MachineBasicBlock *MBB) const

Public Member Functions inherited from llvm::FunctionPass
	FunctionPass (char &pid)

Pass *	createPrinterPass (raw_ostream &O, const std::string &Banner) const
	createPrinterPass - Get a function printer pass. More...

virtual void	assignPassManager (PMStack &PMS, PassManagerType T)

virtual PassManagerType	getPotentialPassManagerType () const
	Return what kind of Pass Manager can manage this pass. More...

Public Member Functions inherited from llvm::Pass
	Pass (PassKind K, char &pid)

virtual	~Pass ()

PassKind	getPassKind () const

virtual const char *	getPassName () const

AnalysisID	getPassID () const
	getPassID - Return the PassID number that corresponds to this pass. More...

virtual bool	doInitialization (Module &)

virtual bool	doFinalization (Module &)

virtual void	print (raw_ostream &O, const Module *M) const

void	dump () const

virtual void	preparePassManager (PMStack &)
	Check if available pass managers are suitable for this pass or not. More...

void	setResolver (AnalysisResolver *AR)

AnalysisResolver *	getResolver () const

virtual void	releaseMemory ()

virtual void *	getAdjustedAnalysisPointer (AnalysisID ID)

virtual ImmutablePass *	getAsImmutablePass ()

virtual PMDataManager *	getAsPMDataManager ()

virtual void	verifyAnalysis () const

virtual void	dumpPassStructure (unsigned Offset=0)

template<typename AnalysisType >
AnalysisType *	getAnalysisIfAvailable () const

bool	mustPreserveAnalysisID (char &AID) const

template<typename AnalysisType >
AnalysisType &	getAnalysis () const

template<typename AnalysisType >
AnalysisType &	getAnalysis (Function &F)

template<typename AnalysisType >
AnalysisType &	getAnalysisID (AnalysisID PI) const

template<typename AnalysisType >
AnalysisType &	getAnalysisID (AnalysisID PI, Function &F)

Static Public Attributes
static char	ID = 0

Additional Inherited Members
Static Public Member Functions inherited from llvm::Pass
static const PassInfo *	lookupPassInfo (const void *TI)

static const PassInfo *	lookupPassInfo (StringRef Arg)

static Pass *	createPass (AnalysisID ID)

Protected Member Functions inherited from llvm::MachineFunctionPass
	MachineFunctionPass (char &ID)

Detailed Description

MachineBlockFrequencyInfo pass uses BlockFrequencyImpl implementation to estimate machine basic block frequencies.

Definition at line 30 of file MachineBlockFrequencyInfo.h.

Constructor & Destructor Documentation

MachineBlockFrequencyInfo::MachineBlockFrequencyInfo ( )

Definition at line 31 of file MachineBlockFrequencyInfo.cpp.

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

MachineBlockFrequencyInfo::~MachineBlockFrequencyInfo ( )

Definition at line 37 of file MachineBlockFrequencyInfo.cpp.

Member Function Documentation

void MachineBlockFrequencyInfo::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 41 of file MachineBlockFrequencyInfo.cpp.

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

BlockFrequency MachineBlockFrequencyInfo::getBlockFreq ( const MachineBasicBlock * MBB ) const

getblockFreq - Return block frequency. Return 0 if we don't have the information. Please note that initial frequency is equal to 1024. It means that we should not rely on the value itself, but only on the comparison to the other block frequencies. We do this to avoid using of floating points.

Definition at line 54 of file MachineBlockFrequencyInfo.cpp.

Referenced by llvm::PBQPBuilderWithCoalescing::build(), and llvm::VirtRegAuxInfo::calculateSpillWeightAndHint().

bool MachineBlockFrequencyInfo::runOnMachineFunction ( MachineFunction & MF )

virtual

runOnMachineFunction - This method must be overloaded to perform the desired machine code transformation or analysis.

Implements llvm::MachineFunctionPass.

Definition at line 47 of file MachineBlockFrequencyInfo.cpp.