1 files changed, 106 insertions, 0 deletions
diff --git a/src/crc32c/src/crc32c_benchmark.cc b/src/crc32c/src/crc32c_benchmark.cc
new file mode 100644
index 0000000000..51194b370a
--- /dev/null
+++ b/src/crc32c/src/crc32c_benchmark.cc
@@ -0,0 +1,106 @@
+// Copyright 2017 The CRC32C Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include <cstddef>
+#include <cstdint>
+
+#ifdef CRC32C_HAVE_CONFIG_H
+#include "crc32c/crc32c_config.h"
+#endif
+
+#include "benchmark/benchmark.h"
+
+#if CRC32C_TESTS_BUILT_WITH_GLOG
+#include "glog/logging.h"
+#endif  // CRC32C_TESTS_BUILT_WITH_GLOG
+
+#include "./crc32c_arm64.h"
+#include "./crc32c_arm64_check.h"
+#include "./crc32c_internal.h"
+#include "./crc32c_sse42.h"
+#include "./crc32c_sse42_check.h"
+#include "crc32c/crc32c.h"
+
+class CRC32CBenchmark : public benchmark::Fixture {
+ public:
+  void SetUp(const benchmark::State& state) override {
+    block_size_ = static_cast<size_t>(state.range(0));
+    block_data_ = std::string(block_size_, 'x');
+    block_buffer_ = reinterpret_cast<const uint8_t*>(block_data_.data());
+  }
+
+ protected:
+  std::string block_data_;
+  const uint8_t* block_buffer_;
+  size_t block_size_;
+};
+
+BENCHMARK_DEFINE_F(CRC32CBenchmark, Public)(benchmark::State& state) {
+  uint32_t crc = 0;
+  for (auto _ : state)
+    crc = crc32c::Extend(crc, block_buffer_, block_size_);
+  state.SetBytesProcessed(state.iterations() * block_size_);
+}
+BENCHMARK_REGISTER_F(CRC32CBenchmark, Public)
+    ->RangeMultiplier(16)
+    ->Range(256, 16777216);  // Block size.
+
+BENCHMARK_DEFINE_F(CRC32CBenchmark, Portable)(benchmark::State& state) {
+  uint32_t crc = 0;
+  for (auto _ : state)
+    crc = crc32c::ExtendPortable(crc, block_buffer_, block_size_);
+  state.SetBytesProcessed(state.iterations() * block_size_);
+}
+BENCHMARK_REGISTER_F(CRC32CBenchmark, Portable)
+    ->RangeMultiplier(16)
+    ->Range(256, 16777216);  // Block size.
+
+#if HAVE_ARM64_CRC32C
+
+BENCHMARK_DEFINE_F(CRC32CBenchmark, ArmCRC32C)(benchmark::State& state) {
+  if (!crc32c::CanUseArm64Crc32()) {
+    state.SkipWithError("ARM CRC32C instructions not available or not enabled");
+    return;
+  }
+
+  uint32_t crc = 0;
+  for (auto _ : state)
+    crc = crc32c::ExtendArm64(crc, block_buffer_, block_size_);
+  state.SetBytesProcessed(state.iterations() * block_size_);
+}
+BENCHMARK_REGISTER_F(CRC32CBenchmark, ArmCRC32C)
+    ->RangeMultiplier(16)
+    ->Range(256, 16777216);  // Block size.
+
+#endif  // HAVE_ARM64_CRC32C
+
+#if HAVE_SSE42 && (defined(_M_X64) || defined(__x86_64__))
+
+BENCHMARK_DEFINE_F(CRC32CBenchmark, Sse42)(benchmark::State& state) {
+  if (!crc32c::CanUseSse42()) {
+    state.SkipWithError("SSE4.2 instructions not available or not enabled");
+    return;
+  }
+
+  uint32_t crc = 0;
+  for (auto _ : state)
+    crc = crc32c::ExtendSse42(crc, block_buffer_, block_size_);
+  state.SetBytesProcessed(state.iterations() * block_size_);
+}
+BENCHMARK_REGISTER_F(CRC32CBenchmark, Sse42)
+    ->RangeMultiplier(16)
+    ->Range(256, 16777216);  // Block size.
+
+#endif  // HAVE_SSE42 && (defined(_M_X64) || defined(__x86_64__))
+
+int main(int argc, char** argv) {
+#if CRC32C_TESTS_BUILT_WITH_GLOG
+  google::InitGoogleLogging(argv[0]);
+  google::InstallFailureSignalHandler();
+#endif  // CRC32C_TESTS_BUILT_WITH_GLOG
+
+  benchmark::Initialize(&argc, argv);
+  benchmark::RunSpecifiedBenchmarks();
+  return 0;
+}