+//===----------------------------------------------------------------------===//
+// Use swap Implementation
+//===----------------------------------------------------------------------===//
+
+void Use::swap(Use &RHS) {
+ Value *V1(Val);
+ Value *V2(RHS.Val);
+ if (V1 != V2) {
+ if (V1) {
+ removeFromList();
+ }
+
+ if (V2) {
+ RHS.removeFromList();
+ Val = V2;
+ V2->addUse(*this);
+ } else {
+ Val = 0;
+ }
+
+ if (V1) {
+ RHS.Val = V1;
+ V1->addUse(RHS);
+ } else {
+ RHS.Val = 0;
+ }
+ }
+}
+