An immutable pass that tracks lazily created AssumptionCache objects. More...

#include "llvm/Analysis/AssumptionCache.h"

Inheritance diagram for llvm::AssumptionCacheTracker:

[legend]

Public Member Functions
AssumptionCache &	getAssumptionCache (Function &F)
	Get the cached assumptions for a function.

AssumptionCache *	lookupAssumptionCache (Function &F)
	Return the cached assumptions for a function if it has already been scanned.

	AssumptionCacheTracker ()

	~AssumptionCacheTracker () override

void	releaseMemory () override
	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.

void	verifyAnalysis () const override
	verifyAnalysis() - This member can be implemented by a analysis pass to check state of analysis information.

bool	doFinalization (Module &) override
	doFinalization - Virtual method overriden by subclasses to do any necessary clean up after all passes have run.

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

	~ImmutablePass () override

virtual void	initializePass ()
	initializePass - This method may be overriden by immutable passes to allow them to perform various initialization actions they require.

ImmutablePass *	getAsImmutablePass () override

bool	runOnModule (Module &) override
	ImmutablePasses are never run.

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

	~ModulePass () override

Pass *	createPrinterPass (raw_ostream &OS, const std::string &Banner) const override
	createPrinterPass - Get a module printer pass.

virtual bool	runOnModule (Module &M)=0
	runOnModule - Virtual method overriden by subclasses to process the module being operated on.

void	assignPassManager (PMStack &PMS, PassManagerType T) override
	Find appropriate Module Pass Manager in the PM Stack and add self into that manager.

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

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

	Pass (const Pass &)=delete

Pass &	operator= (const Pass &)=delete

virtual	~Pass ()

PassKind	getPassKind () const

virtual StringRef	getPassName () const
	getPassName - Return a nice clean name for a pass.

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

virtual bool	doInitialization (Module &)
	doInitialization - Virtual method overridden by subclasses to do any necessary initialization before any pass is run.

virtual bool	doFinalization (Module &)
	doFinalization - Virtual method overriden by subclasses to do any necessary clean up after all passes have run.

virtual void	print (raw_ostream &OS, const Module *M) const
	print - Print out the internal state of the pass.

void	dump () const

virtual Pass *	createPrinterPass (raw_ostream &OS, const std::string &Banner) const =0
	createPrinterPass - Get a Pass appropriate to print the IR this pass operates on (Module, Function or MachineFunction).

virtual void	assignPassManager (PMStack &, PassManagerType)
	Each pass is responsible for assigning a pass manager to itself.

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

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

void	setResolver (AnalysisResolver *AR)

AnalysisResolver *	getResolver () const

virtual void	getAnalysisUsage (AnalysisUsage &) const
	getAnalysisUsage - This function should be overriden by passes that need analysis information to do their job.

virtual void	releaseMemory ()
	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.

virtual void *	getAdjustedAnalysisPointer (AnalysisID ID)
	getAdjustedAnalysisPointer - This method is used when a pass implements an analysis interface through multiple inheritance.

virtual ImmutablePass *	getAsImmutablePass ()

virtual PMDataManager *	getAsPMDataManager ()

virtual void	verifyAnalysis () const
	verifyAnalysis() - This member can be implemented by a analysis pass to check state of analysis information.

virtual void	dumpPassStructure (unsigned Offset=0)

template<typename AnalysisType >
AnalysisType *	getAnalysisIfAvailable () const
	getAnalysisIfAvailable<AnalysisType>() - Subclasses use this function to get analysis information that might be around, for example to update it.

bool	mustPreserveAnalysisID (char &AID) const
	mustPreserveAnalysisID - This method serves the same function as getAnalysisIfAvailable, but works if you just have an AnalysisID.

template<typename AnalysisType >
AnalysisType &	getAnalysis () const
	getAnalysis<AnalysisType>() - This function is used by subclasses to get to the analysis information that they claim to use by overriding the getAnalysisUsage function.

template<typename AnalysisType >
AnalysisType &	getAnalysis (Function &F, bool *Changed=nullptr)
	getAnalysis<AnalysisType>() - This function is used by subclasses to get to the analysis information that they claim to use by overriding the getAnalysisUsage function.

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

template<typename AnalysisType >
AnalysisType &	getAnalysisID (AnalysisID PI, Function &F, bool *Changed=nullptr)

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::ModulePass
bool	skipModule (Module &M) const
	Optional passes call this function to check whether the pass should be skipped.

Detailed Description

An immutable pass that tracks lazily created AssumptionCache objects.

This is essentially a workaround for the legacy pass manager's weaknesses which associates each assumption cache with Function and clears it if the function is deleted. The nature of the AssumptionCache is that it is not invalidated by any changes to the function body and so this is sufficient to be conservatively correct.

Definition at line 204 of file AssumptionCache.h.

Constructor & Destructor Documentation

◆ AssumptionCacheTracker()

AssumptionCacheTracker::AssumptionCacheTracker ( )

Definition at line 297 of file AssumptionCache.cpp.

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

◆ ~AssumptionCacheTracker()

AssumptionCacheTracker::~AssumptionCacheTracker ( )

overridedefault

Member Function Documentation

◆ doFinalization()

bool llvm::AssumptionCacheTracker::doFinalization ( Module & )

inlineoverridevirtual

doFinalization - Virtual method overriden by subclasses to do any necessary clean up after all passes have run.

Reimplemented from llvm::Pass.

Definition at line 248 of file AssumptionCache.h.

References verifyAnalysis().

◆ getAssumptionCache()

AssumptionCache & AssumptionCacheTracker::getAssumptionCache ( Function & F )

Get the cached assumptions for a function.

If no assumptions are cached, this will scan the function. Otherwise, the existing cache will be returned.

Definition at line 248 of file AssumptionCache.cpp.

References assert(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::end(), F, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find_as(), I, and llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::insert().

Referenced by llvm::getBestSimplifyQuery().

◆ lookupAssumptionCache()

AssumptionCache * AssumptionCacheTracker::lookupAssumptionCache ( Function & F )

Return the cached assumptions for a function if it has already been scanned.

Otherwise return nullptr.

Definition at line 268 of file AssumptionCache.cpp.

References llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::end(), F, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find_as(), and I.

◆ releaseMemory()

void llvm::AssumptionCacheTracker::releaseMemory ( )

inlineoverridevirtual

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 241 of file AssumptionCache.h.

References llvm::DenseMap< KeyT, ValueT, KeyInfoT, BucketT >::shrink_and_clear(), and verifyAnalysis().

◆ verifyAnalysis()

void AssumptionCacheTracker::verifyAnalysis ( ) const

overridevirtual

verifyAnalysis() - This member can be implemented by a analysis pass to check state of analysis information.

Reimplemented from llvm::Pass.

Definition at line 275 of file AssumptionCache.cpp.

References B, llvm::SmallPtrSetImpl< PtrType >::count(), I, II, llvm::SmallPtrSetImpl< PtrType >::insert(), llvm::PatternMatch::match(), llvm::report_fatal_error(), and VerifyAssumptionCache.

Referenced by doFinalization(), and releaseMemory().

Member Data Documentation

◆ ID

char AssumptionCacheTracker::ID = 0

static

Definition at line 253 of file AssumptionCache.h.

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

include/llvm/Analysis/AssumptionCache.h
lib/Analysis/AssumptionCache.cpp

Public Member Functions

Static Public Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ AssumptionCacheTracker()

◆ ~AssumptionCacheTracker()

Member Function Documentation

◆ doFinalization()

◆ getAssumptionCache()

◆ lookupAssumptionCache()

◆ releaseMemory()

◆ verifyAnalysis()

Member Data Documentation

◆ ID