const Use *Current = this;
while (true) {
- unsigned Tag = extractTag<PrevPtrTag, fullStopTag>((Current++)->Prev);
+ unsigned Tag = (Current++)->Prev.getInt();
switch (Tag) {
case zeroDigitTag:
case oneDigitTag:
++Current;
ptrdiff_t Offset = 1;
while (true) {
- unsigned Tag = extractTag<PrevPtrTag, fullStopTag>(Current->Prev);
+ unsigned Tag = Current->Prev.getInt();
switch (Tag) {
case zeroDigitTag:
case oneDigitTag:
--Stop;
Stop->Val = 0;
if (!Count) {
- Stop->Prev = reinterpret_cast<Use**>(Done == 0 ? fullStopTag : stopTag);
+ Stop->Prev.setFromOpaqueValue(reinterpret_cast<Use**>(Done == 0
+ ? fullStopTag
+ : stopTag));
++Done;
Count = Done;
} else {
- Stop->Prev = reinterpret_cast<Use**>(Count & 1);
+ Stop->Prev.setFromOpaqueValue(reinterpret_cast<Use**>(Count & 1));
Count >>= 1;
++Done;
}
//===----------------------------------------------------------------------===//
struct AugmentedUse : Use {
- User *ref;
+ PointerIntPair<User*, 1, Tag> ref;
AugmentedUse(); // not implemented
};
User *Use::getUser() const {
const Use *End = getImpliedUser();
- User *She = static_cast<const AugmentedUse*>(End - 1)->ref;
- She = extractTag<Tag, tagOne>(She)
- ? llvm::stripTag<tagOne>(She)
- : reinterpret_cast<User*>(const_cast<Use*>(End));
-
- return She;
+ const PointerIntPair<User*, 1, Tag>& ref(
+ static_cast<const AugmentedUse*>(End - 1)->ref);
+ User *She = ref.getPointer();
+ return ref.getInt()
+ ? She
+ : (User*)End;
}
//===----------------------------------------------------------------------===//
+ sizeof(AugmentedUse)
- sizeof(Use)));
Use *End = Begin + N;
- static_cast<AugmentedUse&>(End[-1]).ref = addTag(this, tagOne);
+ PointerIntPair<User*, 1, Tag>& ref(static_cast<AugmentedUse&>(End[-1]).ref);
+ ref.setPointer(const_cast<User*>(this));
+ ref.setInt(tagOne);
return Use::initTags(Begin, End);
}