120     Stack.emplace_back(std::make_unique<TimeTraceProfilerEntry>(  in begin()
123     return Stack.back().get();  in begin()
129     Stack.emplace_back(std::make_unique<TimeTraceProfilerEntry>(  in begin()
132     return Stack.back().get();  in begin()
136     assert(!Stack.empty() && "Must call begin() first");  in end()
137     end(*Stack.back());  in end()
141     assert(!Stack.empty() && "Must call begin() first");  in end()
156     if (llvm::none_of(llvm::drop_begin(llvm::reverse(Stack)),  in end()
165     llvm::erase_if(Stack,  in end()
177     assert(Stack.empty() &&  in write()
180                         [](const auto &TTP) { return TTP->Stack.empty(); }) &&  in write()
322   SmallVector<std::unique_ptr<TimeTraceProfilerEntry>, 16> Stack;  member