202   SmallVector<User *> Stack{U};  in collectFunctionUses()  local
204   while (!Stack.empty()) {  in collectFunctionUses()
205     U = Stack.pop_back_val();  in collectFunctionUses()
216     append_range(Stack, U->users());  in collectFunctionUses()
231   SmallVector<const User *, 16> Stack(GV->users());  in hasUserInstruction()  local
233   while (!Stack.empty()) {  in hasUserInstruction()
234     const User *U = Stack.pop_back_val();  in hasUserInstruction()
242     append_range(Stack, U->users());  in hasUserInstruction()
255   SmallVector<const User *, 16> Stack(GV.users());  in shouldLowerLDSToStruct()  local
260   while (!Stack.empty()) {  in shouldLowerLDSToStruct()
261     const User *V = Stack.pop_back_val();  in shouldLowerLDSToStruct()
291     append_range(Stack, V->users());  in shouldLowerLDSToStruct()