const MDNode *TBAAInfo;
public:
PointerRec(Value *V)
- : Val(V), PrevInList(0), NextInList(0), AS(0), Size(0), TBAAInfo(0) {}
+ : Val(V), PrevInList(0), NextInList(0), AS(0), Size(0),
+ TBAAInfo(DenseMapInfo<const MDNode *>::getEmptyKey()) {}
Value *getValue() const { return Val; }
void updateSizeAndTBAAInfo(unsigned NewSize, const MDNode *NewTBAAInfo) {
if (NewSize > Size) Size = NewSize;
- if (!TBAAInfo)
+ if (TBAAInfo == DenseMapInfo<const MDNode *>::getEmptyKey())
+ // We don't have a TBAAInfo yet. Set it to NewTBAAInfo.
TBAAInfo = NewTBAAInfo;
else if (TBAAInfo != NewTBAAInfo)
- TBAAInfo = reinterpret_cast<const MDNode *>(-1);
+ // NewTBAAInfo conflicts with TBAAInfo.
+ TBAAInfo = DenseMapInfo<const MDNode *>::getTombstoneKey();
}
unsigned getSize() const { return Size; }
- /// getRawTBAAInfo - Return the raw TBAAInfo member. In addition to
- /// being null or a pointer to an MDNode, this could be -1, meaning
- /// there was conflicting information.
- const MDNode *getRawTBAAInfo() const {
- return TBAAInfo;
- }
-
/// getTBAAInfo - Return the TBAAInfo, or null if there is no
/// information or conflicting information.
const MDNode *getTBAAInfo() const {
- // If we have conflicting TBAAInfo, return null.
- if (TBAAInfo == reinterpret_cast<const MDNode *>(-1))
+ // If we have missing or conflicting TBAAInfo, return null.
+ if (TBAAInfo == DenseMapInfo<const MDNode *>::getEmptyKey() ||
+ TBAAInfo == DenseMapInfo<const MDNode *>::getTombstoneKey())
return 0;
return TBAAInfo;
}
Value *getPointer() const { return CurNode->getValue(); }
unsigned getSize() const { return CurNode->getSize(); }
- const MDNode *getRawTBAAInfo() const { return CurNode->getRawTBAAInfo(); }
const MDNode *getTBAAInfo() const { return CurNode->getTBAAInfo(); }
iterator& operator++() { // Preincrement
bool X;
for (AliasSet::iterator ASI = AS.begin(), E = AS.end(); ASI != E; ++ASI) {
AliasSet &NewAS = addPointer(ASI.getPointer(), ASI.getSize(),
- ASI.getRawTBAAInfo(),
+ ASI.getTBAAInfo(),
(AliasSet::AccessType)AS.AccessTy, X);
if (AS.isVolatile()) NewAS.setVolatile();
}
I = PointerMap.find(From);
AliasSet *AS = I->second->getAliasSet(*this);
AS->addPointer(*this, Entry, I->second->getSize(),
- I->second->getRawTBAAInfo(),
+ I->second->getTBAAInfo(),
true);
}