//===----------------------------------------------------------------------===//
#include "llvm/Value.h"
+#include <new>
namespace llvm {
// Use initTags Implementation
//===----------------------------------------------------------------------===//
-Use *Use::initTags(Use * const Start, Use *Stop, ptrdiff_t Done) {
+Use *Use::initTags(Use * const Start, Use *Stop) {
+ ptrdiff_t Done = 0;
while (Done < 20) {
if (Start == Stop--)
return Start;
oneDigitTag, oneDigitTag, oneDigitTag,
oneDigitTag, stopTag
};
- Stop->Prev.setFromOpaqueValue(reinterpret_cast<Use**>(tags[Done++]));
- Stop->Val = 0;
+ new(Stop) Use(tags[Done++]);
}
ptrdiff_t Count = Done;
while (Start != Stop) {
--Stop;
- Stop->Val = 0;
if (!Count) {
- Stop->Prev.setFromOpaqueValue(reinterpret_cast<Use**>(stopTag));
+ new(Stop) Use(stopTag);
++Done;
Count = Done;
} else {
- Stop->Prev.setFromOpaqueValue(reinterpret_cast<Use**>(Count & 1));
+ new(Stop) Use(PrevPtrTag(Count & 1));
Count >>= 1;
++Done;
}
//===----------------------------------------------------------------------===//
void Use::zap(Use *Start, const Use *Stop, bool del) {
- if (del) {
- while (Start != Stop) {
- (--Stop)->~Use();
- }
+ while (Start != Stop)
+ (--Stop)->~Use();
+ if (del)
::operator delete(Start);
- return;
- }
-
- while (Start != Stop) {
- (Start++)->set(0);
- }
}
//===----------------------------------------------------------------------===//
User *Use::getUser() const {
const Use *End = getImpliedUser();
- const PointerIntPair<User*, 1, Tag>& ref(
- static_cast<const AugmentedUse*>(End - 1)->ref);
- User *She = ref.getPointer();
- return ref.getInt()
- ? She
+ const UserRef *ref = reinterpret_cast<const UserRef*>(End);
+ return ref->getInt()
+ ? ref->getPointer()
: (User*)End;
}