| #include <benchmark/benchmark.h> |
| |
| #include <fxdiv.h> |
| |
| static void fxdiv_mulext_uint32_t(benchmark::State& state) { |
| uint32_t c = UINT32_C(0x1971DB6B); |
| benchmark::DoNotOptimize(&c); |
| uint32_t d = c; |
| while (state.KeepRunning()) { |
| const uint64_t product = fxdiv_mulext_uint32_t(c, d++); |
| benchmark::DoNotOptimize(product); |
| } |
| } |
| BENCHMARK(fxdiv_mulext_uint32_t); |
| |
| static void native_mulext_uint32_t(benchmark::State& state) { |
| uint32_t c = UINT32_C(0x1971DB6B); |
| benchmark::DoNotOptimize(&c); |
| uint32_t d = c; |
| while (state.KeepRunning()) { |
| const uint64_t product = (uint64_t) c * (uint64_t) (d++); |
| benchmark::DoNotOptimize(product); |
| } |
| } |
| BENCHMARK(native_mulext_uint32_t); |
| |
| static void fxdiv_mulhi_uint32_t(benchmark::State& state) { |
| const uint32_t c = UINT32_C(0x1971DB6B); |
| uint32_t x = c; |
| while (state.KeepRunning()) { |
| const uint32_t product = fxdiv_mulhi_uint32_t(c, x++); |
| benchmark::DoNotOptimize(product); |
| } |
| } |
| BENCHMARK(fxdiv_mulhi_uint32_t); |
| |
| static void fxdiv_mulhi_uint64_t(benchmark::State& state) { |
| const uint64_t c = UINT64_C(0x425E892B38148FAD); |
| uint64_t x = c; |
| while (state.KeepRunning()) { |
| const uint64_t product = fxdiv_mulhi_uint64_t(c, x++); |
| benchmark::DoNotOptimize(product); |
| } |
| } |
| BENCHMARK(fxdiv_mulhi_uint64_t); |
| |
| BENCHMARK_MAIN(); |