1 #include "llvm/Support/xxhash.h" 2 #include "benchmark/benchmark.h" 3 4 #include <memory> 5 6 static uint32_t xorshift(uint32_t State) { 7 State ^= State << 13; 8 State ^= State >> 17; 9 State ^= State << 5; 10 return State; 11 } 12 13 static void BM_xxh3_64bits(benchmark::State &State) { 14 std::unique_ptr<uint32_t[]> Data(new uint32_t[State.range(0) / 4]); 15 16 uint32_t Prev = 0xcafebabe; 17 for (int64_t I = 0; I < State.range(0) / 4; I++) 18 Data[I] = Prev = xorshift(Prev); 19 20 llvm::ArrayRef DataRef = 21 llvm::ArrayRef(reinterpret_cast<uint8_t *>(Data.get()), State.range(0)); 22 23 for (auto _ : State) 24 llvm::xxh3_64bits(DataRef); 25 } 26 27 BENCHMARK(BM_xxh3_64bits)->Arg(32)->Arg(512)->Arg(64 * 1024)->Arg(1024 * 1024); 28 29 BENCHMARK_MAIN(); 30