1*90569e02SDaniel Bertalan #include "llvm/Support/xxhash.h" 2*90569e02SDaniel Bertalan #include "benchmark/benchmark.h" 3*90569e02SDaniel Bertalan 4*90569e02SDaniel Bertalan #include <memory> 5*90569e02SDaniel Bertalan 6*90569e02SDaniel Bertalan static uint32_t xorshift(uint32_t State) { 7*90569e02SDaniel Bertalan State ^= State << 13; 8*90569e02SDaniel Bertalan State ^= State >> 17; 9*90569e02SDaniel Bertalan State ^= State << 5; 10*90569e02SDaniel Bertalan return State; 11*90569e02SDaniel Bertalan } 12*90569e02SDaniel Bertalan 13*90569e02SDaniel Bertalan static void BM_xxh3_64bits(benchmark::State &State) { 14*90569e02SDaniel Bertalan std::unique_ptr<uint32_t[]> Data(new uint32_t[State.range(0) / 4]); 15*90569e02SDaniel Bertalan 16*90569e02SDaniel Bertalan uint32_t Prev = 0xcafebabe; 17*90569e02SDaniel Bertalan for (int64_t I = 0; I < State.range(0) / 4; I++) 18*90569e02SDaniel Bertalan Data[I] = Prev = xorshift(Prev); 19*90569e02SDaniel Bertalan 20*90569e02SDaniel Bertalan llvm::ArrayRef DataRef = 21*90569e02SDaniel Bertalan llvm::ArrayRef(reinterpret_cast<uint8_t *>(Data.get()), State.range(0)); 22*90569e02SDaniel Bertalan 23*90569e02SDaniel Bertalan for (auto _ : State) 24*90569e02SDaniel Bertalan llvm::xxh3_64bits(DataRef); 25*90569e02SDaniel Bertalan } 26*90569e02SDaniel Bertalan 27*90569e02SDaniel Bertalan BENCHMARK(BM_xxh3_64bits)->Arg(32)->Arg(512)->Arg(64 * 1024)->Arg(1024 * 1024); 28*90569e02SDaniel Bertalan 29*90569e02SDaniel Bertalan BENCHMARK_MAIN(); 30