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