LLVM  6.0.0svn
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llvm::AssumptionCacheTracker Class Reference

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

#include "llvm/Analysis/AssumptionCache.h"

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Public Member Functions

AssumptionCachegetAssumptionCache (Function &F)
 Get the cached assumptions for a function. More...
 
 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. More...
 
void verifyAnalysis () const override
 verifyAnalysis() - This member can be implemented by a analysis pass to check state of analysis information. More...
 
bool doFinalization (Module &) override
 doFinalization - Virtual method overriden by subclasses to do any necessary clean up after all passes have run. More...
 
- 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. More...
 
ImmutablePassgetAsImmutablePass () override
 
bool runOnModule (Module &) override
 ImmutablePasses are never run. More...
 
- Public Member Functions inherited from llvm::ModulePass
 ModulePass (char &pid)
 
 ~ModulePass () override
 
PasscreatePrinterPass (raw_ostream &OS, const std::string &Banner) const override
 createPrinterPass - Get a module printer pass. More...
 
void assignPassManager (PMStack &PMS, PassManagerType T) override
 Find appropriate Module Pass Manager in the PM Stack and add self into that manager. More...
 
PassManagerType getPotentialPassManagerType () const override
 Return what kind of Pass Manager can manage this pass. More...
 
- Public Member Functions inherited from llvm::Pass
 Pass (PassKind K, char &pid)
 
 Pass (const Pass &)=delete
 
Passoperator= (const Pass &)=delete
 
virtual ~Pass ()
 
PassKind getPassKind () const
 
virtual StringRef getPassName () const
 getPassName - Return a nice clean name for a pass. More...
 
AnalysisID getPassID () const
 getPassID - Return the PassID number that corresponds to this pass. More...
 
virtual bool doInitialization (Module &)
 doInitialization - Virtual method overridden by subclasses to do any necessary initialization before any pass is run. More...
 
virtual void print (raw_ostream &OS, const Module *M) const
 print - Print out the internal state of the pass. More...
 
void dump () const
 
virtual void preparePassManager (PMStack &)
 Check if available pass managers are suitable for this pass or not. More...
 
void setResolver (AnalysisResolver *AR)
 
AnalysisResolvergetResolver () const
 
virtual void getAnalysisUsage (AnalysisUsage &) const
 getAnalysisUsage - This function should be overriden by passes that need analysis information to do their job. More...
 
virtual void * getAdjustedAnalysisPointer (AnalysisID ID)
 getAdjustedAnalysisPointer - This method is used when a pass implements an analysis interface through multiple inheritance. More...
 
virtual PMDataManagergetAsPMDataManager ()
 
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. More...
 
bool mustPreserveAnalysisID (char &AID) const
 mustPreserveAnalysisID - This method serves the same function as getAnalysisIfAvailable, but works if you just have an AnalysisID. More...
 
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. More...
 
template<typename AnalysisType >
AnalysisType & getAnalysis (Function &F)
 getAnalysis<AnalysisType>() - This function is used by subclasses to get to the analysis information that they claim to use by overriding the getAnalysisUsage function. More...
 
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 PassInfolookupPassInfo (const void *TI)
 
static const PassInfolookupPassInfo (StringRef Arg)
 
static PasscreatePass (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. More...
 

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 182 of file AssumptionCache.h.

Constructor & Destructor Documentation

◆ AssumptionCacheTracker()

AssumptionCacheTracker::AssumptionCacheTracker ( )

◆ ~AssumptionCacheTracker()

AssumptionCacheTracker::~AssumptionCacheTracker ( )
overridedefault

Referenced by AssumptionCacheTracker().

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 222 of file AssumptionCache.h.

◆ 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 227 of file AssumptionCache.cpp.

References assert(), and I.

Referenced by llvm::getBestSimplifyQuery(), and llvm::LegacyInlinerBase::inlineCalls().

◆ 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 215 of file AssumptionCache.h.

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

◆ 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 244 of file AssumptionCache.cpp.

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

Member Data Documentation

◆ ID

char AssumptionCacheTracker::ID = 0
static

Definition at line 227 of file AssumptionCache.h.

Referenced by AssumptionCacheTracker().


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