3953         ValueDFSStack EliminationStack;  in eliminateInstructions()  local
3987           if (EliminationStack.empty()) {  in eliminateInstructions()
3991                               << EliminationStack.dfs_back().first << ","  in eliminateInstructions()
3992                               << EliminationStack.dfs_back().second << ")\n");  in eliminateInstructions()
4010           bool ShouldPush = Def && EliminationStack.empty();  in eliminateInstructions()
4012               !EliminationStack.isInScope(MemberDFSIn, MemberDFSOut);  in eliminateInstructions()
4016             EliminationStack.popUntilDFSScope(MemberDFSIn, MemberDFSOut);  in eliminateInstructions()
4017             bool ShouldPush = Def && EliminationStack.empty();  in eliminateInstructions()
4019               EliminationStack.push_back(Def, MemberDFSIn, MemberDFSOut);  in eliminateInstructions()
4038             if (!EliminationStack.empty() && Def != EliminationStack.back() &&  in eliminateInstructions()
4065           if (EliminationStack.empty())  in eliminateInstructions()
4068           Value *DominatingLeader = EliminationStack.back();  in eliminateInstructions()
4127       ValueDFSStack EliminationStack;  in eliminateInstructions()  local
4132         if (EliminationStack.empty() ||  in eliminateInstructions()
4133             !EliminationStack.isInScope(MemberDFSIn, MemberDFSOut)) {  in eliminateInstructions()
4135           EliminationStack.popUntilDFSScope(MemberDFSIn, MemberDFSOut);  in eliminateInstructions()
4136           if (EliminationStack.empty()) {  in eliminateInstructions()
4137             EliminationStack.push_back(Member, MemberDFSIn, MemberDFSOut);  in eliminateInstructions()
4144         assert(!EliminationStack.empty());  in eliminateInstructions()
4145         Instruction *Leader = cast<Instruction>(EliminationStack.back());  in eliminateInstructions()