/// replaceAllUsesWith - Replace all uses of debug info referenced by /// this descriptor. After this completes, the current debug info value /// is erased. void DIDerivedType::replaceAllUsesWith(DIDescriptor &D) { if (isNull()) return; assert (!D.isNull() && "Can not replace with null"); // Since we use a TrackingVH for the node, its easy for clients to manufacture // legitimate situations where they want to replaceAllUsesWith() on something // which, due to uniquing, has merged with the source. We shield clients from // this detail by allowing a value to be replaced with replaceAllUsesWith() // itself. if (getNode() != D.getNode()) { MDNode *Node = DbgNode; Node->replaceAllUsesWith(D.getNode()); delete Node; } }