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//===-- Benchmark function -----------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "LibcBenchmark.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/TargetParser/Host.h"
namespace llvm {
namespace libc_benchmarks {
void checkRequirements() {
const auto &CpuInfo = benchmark::CPUInfo::Get();
if (CpuInfo.scaling == benchmark::CPUInfo::ENABLED)
report_fatal_error(
"CPU scaling is enabled, the benchmark real time measurements may be "
"noisy and will incur extra overhead.");
}
HostState HostState::get() {
const auto &CpuInfo = benchmark::CPUInfo::Get();
HostState H;
H.CpuFrequency = CpuInfo.cycles_per_second;
H.CpuName = llvm::sys::getHostCPUName().str();
for (const auto &BenchmarkCacheInfo : CpuInfo.caches) {
CacheInfo CI;
CI.Type = BenchmarkCacheInfo.type;
CI.Level = BenchmarkCacheInfo.level;
CI.Size = BenchmarkCacheInfo.size;
CI.NumSharing = BenchmarkCacheInfo.num_sharing;
H.Caches.push_back(std::move(CI));
}
return H;
}
} // namespace libc_benchmarks
} // namespace llvm
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