Benchmark Comparisons

example.cpp

static void BM_Foo(benchmark::State& St) {
  [...]
}

static void BM_Bar(benchmark::State& st) {
  [...]
}

// Option #1: The BENCHMARK macro could return an identifier that
// could be used in comparison API's to setup comparison tests.
auto *FooBenchID = BENCHMARK(BM_Foo);
auto *BarBenchID = BENCHMARK(BM_Bar)->CompareTo(FooBenchID);

// Option #2: A single benchmark function could be used to compare
// two algorithms. (Perhaps a single state object could be used).
static void BM_Baz(benchmark::State& st1, benchmark::State& st2) {
  { // First benchmark
    while (st1.KeepRunning()) {
      [...]
    }
  }
  { // Second benchmark
    while (st2.KeepRunning()) {
      [...]
    }
  }
}