/// Test whether the given instruction can "use" the given pointer's object in a
/// way that requires the reference count to be positive.
-bool
-CanUse(const Instruction *Inst, const Value *Ptr, ProvenanceAnalysis &PA,
- InstructionClass Class);
+bool CanUse(const Instruction *Inst, const Value *Ptr, ProvenanceAnalysis &PA,
+ ARCInstKind Class);
/// Test whether the given instruction can result in a reference count
/// modification (positive or negative) for the pointer's object.
-bool
-CanAlterRefCount(const Instruction *Inst, const Value *Ptr,
- ProvenanceAnalysis &PA, InstructionClass Class);
+bool CanAlterRefCount(const Instruction *Inst, const Value *Ptr,
+ ProvenanceAnalysis &PA, ARCInstKind Class);
+
+/// Returns true if we can not conservatively prove that Inst can not decrement
+/// the reference count of Ptr. Returns false if we can.
+bool CanDecrementRefCount(const Instruction *Inst, const Value *Ptr,
+ ProvenanceAnalysis &PA, ARCInstKind Class);
+
+static inline bool CanDecrementRefCount(const Instruction *Inst,
+ const Value *Ptr,
+ ProvenanceAnalysis &PA) {
+ return CanDecrementRefCount(Inst, Ptr, PA, GetARCInstKind(Inst));
+}
} // namespace objcarc
} // namespace llvm