3943         ValueDFSStack EliminationStack;  in eliminateInstructions()  local
3977           if (EliminationStack.empty()) {  in eliminateInstructions()
3981                               << EliminationStack.dfs_back().first << ","  in eliminateInstructions()
3982                               << EliminationStack.dfs_back().second << ")\n");  in eliminateInstructions()
4000           bool ShouldPush = Def && EliminationStack.empty();  in eliminateInstructions()
4002               !EliminationStack.isInScope(MemberDFSIn, MemberDFSOut);  in eliminateInstructions()
4006             EliminationStack.popUntilDFSScope(MemberDFSIn, MemberDFSOut);  in eliminateInstructions()
4007             bool ShouldPush = Def && EliminationStack.empty();  in eliminateInstructions()
4009               EliminationStack.push_back(Def, MemberDFSIn, MemberDFSOut);  in eliminateInstructions()
4028             if (!EliminationStack.empty() && Def != EliminationStack.back() &&  in eliminateInstructions()
4055           if (EliminationStack.empty())  in eliminateInstructions()
4058           Value *DominatingLeader = EliminationStack.back();  in eliminateInstructions()
4117       ValueDFSStack EliminationStack;  in eliminateInstructions()  local
4122         if (EliminationStack.empty() ||  in eliminateInstructions()
4123             !EliminationStack.isInScope(MemberDFSIn, MemberDFSOut)) {  in eliminateInstructions()
4125           EliminationStack.popUntilDFSScope(MemberDFSIn, MemberDFSOut);  in eliminateInstructions()
4126           if (EliminationStack.empty()) {  in eliminateInstructions()
4127             EliminationStack.push_back(Member, MemberDFSIn, MemberDFSOut);  in eliminateInstructions()
4134         assert(!EliminationStack.empty());  in eliminateInstructions()
4135         Instruction *Leader = cast<Instruction>(EliminationStack.back());  in eliminateInstructions()