mirror of
https://github.com/GerbilSoft/zlib-ng.git
synced 2025-06-18 11:35:35 -04:00
84 lines
2.4 KiB
C++
84 lines
2.4 KiB
C++
/* benchmark_crc32.cc -- benchmark crc32 variants
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* Copyright (C) 2022 Nathan Moinvaziri
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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#include <stdio.h>
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#include <assert.h>
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#include <benchmark/benchmark.h>
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extern "C" {
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# include "zbuild.h"
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# include "zutil_p.h"
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# include "arch_functions.h"
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# include "../test_cpu_features.h"
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}
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#define MAX_RANDOM_INTS (1024 * 1024)
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#define MAX_RANDOM_INTS_SIZE (MAX_RANDOM_INTS * sizeof(uint32_t))
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class crc32: public benchmark::Fixture {
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private:
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uint32_t *random_ints;
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public:
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void SetUp(const ::benchmark::State& state) {
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random_ints = (uint32_t *)zng_alloc(MAX_RANDOM_INTS_SIZE);
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assert(random_ints != NULL);
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for (int32_t i = 0; i < MAX_RANDOM_INTS; i++) {
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random_ints[i] = rand();
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}
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}
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void Bench(benchmark::State& state, crc32_func crc32) {
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uint32_t hash = 0;
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for (auto _ : state) {
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hash = crc32(hash, (const unsigned char *)random_ints, (size_t)state.range(0));
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}
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benchmark::DoNotOptimize(hash);
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}
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void TearDown(const ::benchmark::State& state) {
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zng_free(random_ints);
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}
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};
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#define BENCHMARK_CRC32(name, fptr, support_flag) \
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BENCHMARK_DEFINE_F(crc32, name)(benchmark::State& state) { \
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if (!support_flag) { \
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state.SkipWithError("CPU does not support " #name); \
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} \
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Bench(state, fptr); \
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} \
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BENCHMARK_REGISTER_F(crc32, name)->Arg(1)->Arg(8)->Arg(12)->Arg(16)->Arg(32)->Arg(64)->Arg(512)->Arg(4<<10)->Arg(32<<10)->Arg(256<<10)->Arg(4096<<10);
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BENCHMARK_CRC32(braid, PREFIX(crc32_braid), 1);
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#ifdef DISABLE_RUNTIME_CPU_DETECTION
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BENCHMARK_CRC32(native, native_crc32, 1);
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#else
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#ifdef ARM_ACLE
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BENCHMARK_CRC32(acle, crc32_acle, test_cpu_features.arm.has_crc32);
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#endif
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#ifdef POWER8_VSX_CRC32
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BENCHMARK_CRC32(power8, crc32_power8, test_cpu_features.power.has_arch_2_07);
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#endif
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#ifdef S390_CRC32_VX
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BENCHMARK_CRC32(vx, crc32_s390_vx, test_cpu_features.s390.has_vx);
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#endif
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#ifdef X86_PCLMULQDQ_CRC
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/* CRC32 fold does a memory copy while hashing */
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BENCHMARK_CRC32(pclmulqdq, crc32_pclmulqdq, test_cpu_features.x86.has_pclmulqdq);
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#endif
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#ifdef X86_VPCLMULQDQ_CRC
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/* CRC32 fold does a memory copy while hashing */
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BENCHMARK_CRC32(vpclmulqdq, crc32_vpclmulqdq, (test_cpu_features.x86.has_pclmulqdq && test_cpu_features.x86.has_avx512 && test_cpu_features.x86.has_vpclmulqdq));
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#endif
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#endif
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