Determining computation time: compilation vs execution

It is necessary to find out which parts of the given code will be computed at compile time and which during runtime.

constexpr int constFact(unsigned value) {
    if (value == 0) {
        return 1;
    }
    return constFact(value - 1) * value;
}

std::cout << constFact(5) << std::endl;

constexpr int result = constFact(5);
std::cout << result << std::endl;