lib/CodeGen/LiveDebugVariables.cpp

420     UserValue *UV = Leader->getLeader();
421     Leader = UV;
422     for (; UV; UV = UV->getNext())
423       if (UV->match(Var, Offset))
424         return UV;
427   UserValue *UV = new UserValue(Var, Offset, DL, allocator);
428   userValues.push_back(UV);
429   Leader = UserValue::merge(Leader, UV);
430   return UV;
440   if (UserValue *UV = virtRegToEqClass.lookup(VirtReg))
441     return UV->getLeader();
456   UserValue *UV = getUserValue(Var, Offset, MI->getDebugLoc());
457   UV->addDef(Idx, MI->getOperand(0));
841   for (UserValue *UV = lookupVirtReg(OldReg); UV; UV = UV->getNext())
842     DidChange |= UV->splitRegister(OldReg, NewRegs);
848   UserValue *UV = lookupVirtReg(OldReg);
850     mapVirtReg(NewRegs[i]->reg, UV);