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#include "llvm/Support/xxhash.h"
#include "benchmark/benchmark.h"
#include <memory>
static uint32_t xorshift(uint32_t State) {
State ^= State << 13;
State ^= State >> 17;
State ^= State << 5;
return State;
}
static void BM_xxh3_64bits(benchmark::State &State) {
std::unique_ptr<uint32_t[]> Data(new uint32_t[State.range(0) / 4]);
uint32_t Prev = 0xcafebabe;
for (int64_t I = 0; I < State.range(0) / 4; I++)
Data[I] = Prev = xorshift(Prev);
llvm::ArrayRef DataRef =
llvm::ArrayRef(reinterpret_cast<uint8_t *>(Data.get()), State.range(0));
for (auto _ : State)
llvm::xxh3_64bits(DataRef);
}
BENCHMARK(BM_xxh3_64bits)->Arg(32)->Arg(512)->Arg(64 * 1024)->Arg(1024 * 1024);
BENCHMARK_MAIN();
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