Function BM_SwitchOp

bench/switches.cpp:15–22

template <typename F>
static void BM_SwitchOp(benchmark::State& state, F&& op) {
	auto s = make();
	int i = 0;
	for (auto _: state) {
		op(s, i + 1, i);
		i = (i + 1) % max_sws;
	}
}

static void BM_SwitchGet(benchmark::State& state) {
	volatile int x = 0;