perf_loop_million.swift

    func testLoopOneMillionTimesA() {
        var count = 0

        self.measureBlock() {
            count = 0
            for _ in 0..1000000 {
                ++count
            }
        }
    }

    func testLoopOneMillionTimesB() {
        var count = 0

        self.measureBlock() {
            count = 0
            for (var i = 0; i < 1000000; ++i) {
                ++count
            }
        }
    }

    func testLoopOneMillionTimesC() {
        var count = 0

        self.measureBlock() {
            count = 0
            for (var i = 0; i < 1000000; ++i) {
                count = count + 1
            }
        }
    }