LLVM API Documentation

llvm::AliasSetTracker Class Reference

#include <AliasSetTracker.h>

Collaboration diagram for llvm::AliasSetTracker:

Collaboration graph
[legend]
List of all members.

Public Types

typedef ilist< AliasSet
>::iterator 
iterator
typedef ilist< AliasSet
>::const_iterator 
const_iterator

Public Member Functions

 AliasSetTracker (AliasAnalysis &aa)
bool add (Value *Ptr, unsigned Size)
bool add (LoadInst *LI)
bool add (StoreInst *SI)
bool add (FreeInst *FI)
bool add (CallSite CS)
bool add (CallInst *CI)
bool add (InvokeInst *II)
bool add (Instruction *I)
void add (BasicBlock &BB)
void add (const AliasSetTracker &AST)
bool remove (Value *Ptr, unsigned Size)
bool remove (LoadInst *LI)
bool remove (StoreInst *SI)
bool remove (FreeInst *FI)
bool remove (CallSite CS)
bool remove (CallInst *CI)
bool remove (InvokeInst *II)
bool remove (Instruction *I)
void remove (AliasSet &AS)
void clear ()
const ilist< AliasSet > & getAliasSets () const
AliasSetgetAliasSetForPointer (Value *P, unsigned Size, bool *New=0)
AliasSetgetAliasSetForPointerIfExists (Value *P, unsigned Size)
bool containsPointer (Value *P, unsigned Size) const
AliasAnalysisgetAliasAnalysis () const
void deleteValue (Value *PtrVal)
void copyValue (Value *From, Value *To)
const_iterator begin () const
const_iterator end () const
iterator begin ()
iterator end ()
void print (std::ostream &OS) const
void dump () const

Friends

class AliasSet

Detailed Description

Definition at line 246 of file AliasSetTracker.h.


Member Typedef Documentation

typedef ilist<AliasSet>::const_iterator llvm::AliasSetTracker::const_iterator

Definition at line 341 of file AliasSetTracker.h.

typedef ilist<AliasSet>::iterator llvm::AliasSetTracker::iterator

Definition at line 340 of file AliasSetTracker.h.


Constructor & Destructor Documentation

llvm::AliasSetTracker::AliasSetTracker ( AliasAnalysis aa  )  [inline]

AliasSetTracker ctor - Create an empty collection of AliasSets, and use the specified alias analysis object to disambiguate load and store addresses.

Definition at line 256 of file AliasSetTracker.h.


Member Function Documentation

void AliasSetTracker::add ( const AliasSetTracker AST  ) 

Definition at line 335 of file AliasSetTracker.cpp.

References AA, llvm::AliasSet::AccessTy, add(), AST, llvm::AliasSet::begin(), begin(), llvm::AliasSet::CallSites, E, llvm::AliasSet::end(), end(), llvm::AliasSet::iterator::getPointer(), llvm::AliasSet::iterator::getSize(), I, and llvm::X.

void AliasSetTracker::add ( BasicBlock BB  ) 

Definition at line 330 of file AliasSetTracker.cpp.

References add(), BB, llvm::BasicBlock::begin(), E, llvm::BasicBlock::end(), and I.

bool AliasSetTracker::add ( Instruction I  ) 

Definition at line 315 of file AliasSetTracker.cpp.

References add(), II, and LI.

bool llvm::AliasSetTracker::add ( InvokeInst II  )  [inline]

Definition at line 276 of file AliasSetTracker.h.

References add(), and II.

bool llvm::AliasSetTracker::add ( CallInst CI  )  [inline]

Definition at line 275 of file AliasSetTracker.h.

References add().

bool AliasSetTracker::add ( CallSite  CS  ) 

Definition at line 298 of file AliasSetTracker.cpp.

References llvm::AliasSet::addCallSite(), AliasSet, llvm::AliasAnalysis::doesNotAccessMemory(), and llvm::CallSite::getCalledFunction().

bool AliasSetTracker::add ( FreeInst FI  ) 

Definition at line 287 of file AliasSetTracker.cpp.

References llvm::UnaryInstruction::getOperand(), and llvm::AliasSet::setVolatile().

bool AliasSetTracker::add ( StoreInst SI  ) 

Definition at line 277 of file AliasSetTracker.cpp.

References llvm::StoreInst::getOperand(), llvm::AliasAnalysis::getTargetData(), llvm::Value::getType(), llvm::TargetData::getTypeSize(), llvm::StoreInst::isVolatile(), llvm::AliasSet::setVolatile(), and Val.

bool AliasSetTracker::add ( LoadInst LI  ) 

Definition at line 268 of file AliasSetTracker.cpp.

References llvm::AliasAnalysis::getTargetData(), llvm::TargetData::getTypeSize(), LI, and llvm::AliasSet::setVolatile().

bool AliasSetTracker::add ( Value Ptr,
unsigned  Size 
)

add methods - These methods are used to add different types of instructions to the alias sets. Adding a new instruction can result in one of three actions happening:

1. If the instruction doesn't alias any other sets, create a new set. 2. If the instruction aliases exactly one set, add it to the set 3. If the instruction aliases multiple sets, merge the sets, and add the instruction to the result.

These methods return true if inserting the instruction resulted in the addition of a new alias set (i.e., the pointer did not alias anything).

Definition at line 261 of file AliasSetTracker.cpp.

Referenced by add().

iterator llvm::AliasSetTracker::begin (  )  [inline]

Definition at line 346 of file AliasSetTracker.h.

const_iterator llvm::AliasSetTracker::begin (  )  const [inline]

Definition at line 343 of file AliasSetTracker.h.

Referenced by add(), containsPointer(), and print().

void llvm::AliasSetTracker::clear (  )  [inline]

Definition at line 294 of file AliasSetTracker.h.

bool AliasSetTracker::containsPointer ( Value P,
unsigned  Size 
) const

containsPointer - Return true if the specified location is represented by this alias set, false otherwise. This does not modify the AST object or alias sets.

Definition at line 211 of file AliasSetTracker.cpp.

References begin(), E, end(), and I.

void AliasSetTracker::copyValue ( Value From,
Value To 
)

copyValue - This method should be used whenever a preexisting value in the program is copied or cloned, introducing a new value. Note that it is ok for clients that use this method to introduce the same value multiple times: if the tracker already knows about a value, it will ignore the request.

Definition at line 458 of file AliasSetTracker.cpp.

References llvm::AliasSet::addPointer(), llvm::AliasAnalysis::copyValue(), and I.

void AliasSetTracker::deleteValue ( Value PtrVal  ) 

deleteValue method - This method is used to remove a pointer value from the AliasSetTracker entirely. It should be used when an instruction is deleted from the program to update the AST. If you don't use this, you would have dangling pointers to deleted instructions.

Definition at line 434 of file AliasSetTracker.cpp.

References llvm::AliasAnalysis::deleteValue(), llvm::AliasSet::dropRef(), and I.

Referenced by remove().

void AliasSetTracker::dump (  )  const

Definition at line 523 of file AliasSetTracker.cpp.

References print().

iterator llvm::AliasSetTracker::end (  )  [inline]

Definition at line 347 of file AliasSetTracker.h.

const_iterator llvm::AliasSetTracker::end (  )  const [inline]

Definition at line 344 of file AliasSetTracker.h.

Referenced by add(), containsPointer(), and print().

AliasAnalysis& llvm::AliasSetTracker::getAliasAnalysis (  )  const [inline]

getAliasAnalysis - Return the underlying alias analysis object used by this tracker.

Definition at line 322 of file AliasSetTracker.h.

Referenced by llvm::AliasSet::mergeSetIn().

AliasSet & AliasSetTracker::getAliasSetForPointer ( Value P,
unsigned  Size,
bool *  New = 0 
)

getAliasSetForPointer - Return the alias set that the specified pointer lives in. If the New argument is non-null, this method sets the value to true if a new alias set is created to contain the pointer (because the pointer didn't alias anything).

Definition at line 239 of file AliasSetTracker.cpp.

References llvm::AliasSet::addPointer(), and AliasSet.

AliasSet* llvm::AliasSetTracker::getAliasSetForPointerIfExists ( Value P,
unsigned  Size 
) [inline]

getAliasSetForPointerIfExists - Return the alias set containing the location specified if one exists, otherwise return null.

Definition at line 311 of file AliasSetTracker.h.

const ilist<AliasSet>& llvm::AliasSetTracker::getAliasSets (  )  const [inline]

getAliasSets - Return the alias sets that are active.

Definition at line 301 of file AliasSetTracker.h.

void AliasSetTracker::print ( std::ostream &  OS  )  const

Definition at line 514 of file AliasSetTracker.cpp.

References begin(), E, end(), and I.

Referenced by dump(), and llvm::operator<<().

void AliasSetTracker::remove ( AliasSet AS  ) 

remove - Remove the specified (potentially non-empty) alias set from the tracker.

Definition at line 361 of file AliasSetTracker.cpp.

References llvm::AliasSet::begin(), deleteValue(), llvm::AliasSet::end(), llvm::AliasSet::iterator::getPointer(), and I.

bool AliasSetTracker::remove ( Instruction I  ) 

Definition at line 415 of file AliasSetTracker.cpp.

References LI, and remove().

bool llvm::AliasSetTracker::remove ( InvokeInst II  )  [inline]

Definition at line 290 of file AliasSetTracker.h.

References II, and remove().

bool llvm::AliasSetTracker::remove ( CallInst CI  )  [inline]

Definition at line 289 of file AliasSetTracker.h.

References remove().

bool AliasSetTracker::remove ( CallSite  CS  ) 

Definition at line 404 of file AliasSetTracker.cpp.

References llvm::AliasAnalysis::doesNotAccessMemory(), llvm::CallSite::getCalledFunction(), and remove().

bool AliasSetTracker::remove ( FreeInst FI  ) 

Definition at line 397 of file AliasSetTracker.cpp.

References llvm::UnaryInstruction::getOperand(), and remove().

bool AliasSetTracker::remove ( StoreInst SI  ) 

Definition at line 389 of file AliasSetTracker.cpp.

References llvm::StoreInst::getOperand(), llvm::AliasAnalysis::getTargetData(), llvm::Value::getType(), llvm::TargetData::getTypeSize(), and remove().

bool AliasSetTracker::remove ( LoadInst LI  ) 

Definition at line 381 of file AliasSetTracker.cpp.

References llvm::AliasAnalysis::getTargetData(), llvm::TargetData::getTypeSize(), LI, and remove().

bool AliasSetTracker::remove ( Value Ptr,
unsigned  Size 
)

remove methods - These methods are used to remove all entries that might be aliased by the specified instruction. These methods return true if any alias sets were eliminated.

Definition at line 374 of file AliasSetTracker.cpp.

Referenced by remove().


Friends And Related Function Documentation

friend class AliasSet [friend]

Definition at line 353 of file AliasSetTracker.h.

Referenced by add(), and getAliasSetForPointer().


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