mirror of
https://github.com/RPCS3/llvm-mirror.git
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Kirill Bobyrev
0f55045526
This patch pulls google/benchmark v1.4.1 into the LLVM tree so that any project could use it for benchmark generation. A dummy benchmark is added to `llvm/benchmarks/DummyYAML.cpp` to validate the correctness of the build process. The current version does not utilize LLVM LNT and LLVM CMake infrastructure, but that might be sufficient for most users. Two introduced CMake variables: * `LLVM_INCLUDE_BENCHMARKS` (`ON` by default) generates benchmark targets * `LLVM_BUILD_BENCHMARKS` (`OFF` by default) adds generated benchmark targets to the list of default LLVM targets (i.e. if `ON` benchmarks will be built upon standard build invocation, e.g. `ninja` or `make` with no specific targets) List of modifications: * `BENCHMARK_ENABLE_TESTING` is disabled * `BENCHMARK_ENABLE_EXCEPTIONS` is disabled * `BENCHMARK_ENABLE_INSTALL` is disabled * `BENCHMARK_ENABLE_GTEST_TESTS` is disabled * `BENCHMARK_DOWNLOAD_DEPENDENCIES` is disabled Original discussion can be found here: http://lists.llvm.org/pipermail/llvm-dev/2018-August/125023.html Reviewed by: dberris, lebedev.ri Subscribers: ilya-biryukov, ioeric, EricWF, lebedev.ri, srhines, dschuff, mgorny, krytarowski, fedor.sergeev, mgrang, jfb, llvm-commits Differential Revision: https://reviews.llvm.org/D50894 llvm-svn: 340809
88 lines
2.7 KiB
C++
88 lines
2.7 KiB
C++
// Copyright 2015 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "benchmark/benchmark.h"
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#include "timers.h"
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#include <cstdlib>
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#include <iostream>
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#include <tuple>
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#include <vector>
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#include "check.h"
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namespace benchmark {
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BenchmarkReporter::BenchmarkReporter()
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: output_stream_(&std::cout), error_stream_(&std::cerr) {}
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BenchmarkReporter::~BenchmarkReporter() {}
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void BenchmarkReporter::PrintBasicContext(std::ostream *out,
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Context const &context) {
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CHECK(out) << "cannot be null";
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auto &Out = *out;
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Out << LocalDateTimeString() << "\n";
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if (context.executable_name)
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Out << "Running " << context.executable_name << "\n";
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const CPUInfo &info = context.cpu_info;
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Out << "Run on (" << info.num_cpus << " X "
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<< (info.cycles_per_second / 1000000.0) << " MHz CPU "
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<< ((info.num_cpus > 1) ? "s" : "") << ")\n";
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if (info.caches.size() != 0) {
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Out << "CPU Caches:\n";
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for (auto &CInfo : info.caches) {
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Out << " L" << CInfo.level << " " << CInfo.type << " "
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<< (CInfo.size / 1000) << "K";
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if (CInfo.num_sharing != 0)
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Out << " (x" << (info.num_cpus / CInfo.num_sharing) << ")";
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Out << "\n";
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}
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}
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if (info.scaling_enabled) {
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Out << "***WARNING*** CPU scaling is enabled, the benchmark "
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"real time measurements may be noisy and will incur extra "
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"overhead.\n";
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}
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#ifndef NDEBUG
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Out << "***WARNING*** Library was built as DEBUG. Timings may be "
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"affected.\n";
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#endif
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}
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// No initializer because it's already initialized to NULL.
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const char* BenchmarkReporter::Context::executable_name;
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BenchmarkReporter::Context::Context() : cpu_info(CPUInfo::Get()) {}
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double BenchmarkReporter::Run::GetAdjustedRealTime() const {
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double new_time = real_accumulated_time * GetTimeUnitMultiplier(time_unit);
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if (iterations != 0) new_time /= static_cast<double>(iterations);
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return new_time;
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}
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double BenchmarkReporter::Run::GetAdjustedCPUTime() const {
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double new_time = cpu_accumulated_time * GetTimeUnitMultiplier(time_unit);
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if (iterations != 0) new_time /= static_cast<double>(iterations);
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return new_time;
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}
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} // end namespace benchmark
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