| 1 | //===-- Benchmark function -----------------------------------------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #include "LibcBenchmark.h" |
| 10 | #include "llvm/ADT/StringRef.h" |
| 11 | #include "llvm/TargetParser/Host.h" |
| 12 | |
| 13 | namespace llvm { |
| 14 | namespace libc_benchmarks { |
| 15 | |
| 16 | void checkRequirements() { |
| 17 | const auto &CpuInfo = benchmark::CPUInfo::Get(); |
| 18 | if (CpuInfo.scaling == benchmark::CPUInfo::ENABLED) |
| 19 | report_fatal_error( |
| 20 | reason: "CPU scaling is enabled, the benchmark real time measurements may be " |
| 21 | "noisy and will incur extra overhead."); |
| 22 | } |
| 23 | |
| 24 | HostState HostState::get() { |
| 25 | const auto &CpuInfo = benchmark::CPUInfo::Get(); |
| 26 | HostState H; |
| 27 | H.CpuFrequency = CpuInfo.cycles_per_second; |
| 28 | H.CpuName = llvm::sys::getHostCPUName().str(); |
| 29 | for (const auto &BenchmarkCacheInfo : CpuInfo.caches) { |
| 30 | CacheInfo CI; |
| 31 | CI.Type = BenchmarkCacheInfo.type; |
| 32 | CI.Level = BenchmarkCacheInfo.level; |
| 33 | CI.Size = BenchmarkCacheInfo.size; |
| 34 | CI.NumSharing = BenchmarkCacheInfo.num_sharing; |
| 35 | H.Caches.push_back(x: std::move(CI)); |
| 36 | } |
| 37 | return H; |
| 38 | } |
| 39 | |
| 40 | } // namespace libc_benchmarks |
| 41 | } // namespace llvm |
| 42 |