public:
TBAANode() : Node(0) {}
- explicit TBAANode(MDNode *N) : Node(N) {}
+ explicit TBAANode(const MDNode *N) : Node(N) {}
/// getNode - Get the MDNode for this TBAANode.
const MDNode *getNode() const { return Node; }
AliasAnalysis::AliasResult
TypeBasedAliasAnalysis::alias(const Location &LocA,
const Location &LocB) {
- // Currently, metadata can only be attached to Instructions.
- const Instruction *AI = dyn_cast<Instruction>(LocA.Ptr);
- if (!AI) return MayAlias;
- const Instruction *BI = dyn_cast<Instruction>(LocB.Ptr);
- if (!BI) return MayAlias;
-
// Get the attached MDNodes. If either value lacks a tbaa MDNode, we must
// be conservative.
- MDNode *AM =
- AI->getMetadata(AI->getParent()->getParent()->getParent()
- ->getMDKindID("tbaa"));
+ const MDNode *AM = LocA.TBAATag;
if (!AM) return MayAlias;
- MDNode *BM =
- BI->getMetadata(BI->getParent()->getParent()->getParent()
- ->getMDKindID("tbaa"));
+ const MDNode *BM = LocB.TBAATag;
if (!BM) return MayAlias;
// Keep track of the root node for A and B.
}
bool TypeBasedAliasAnalysis::pointsToConstantMemory(const Location &Loc) {
- // Currently, metadata can only be attached to Instructions.
- const Instruction *I = dyn_cast<Instruction>(Loc.Ptr);
- if (!I) return false;
-
- MDNode *M =
- I->getMetadata(I->getParent()->getParent()->getParent()
- ->getMDKindID("tbaa"));
+ const MDNode *M = Loc.TBAATag;
if (!M) return false;
// If this is an "immutable" type, we can assume the pointer is pointing