0addd170ab
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
56 lines
1.9 KiB
C++
56 lines
1.9 KiB
C++
// Copyright 2016 Ismael Jimenez Martinez. 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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// Source project : https://github.com/ismaelJimenez/cpp.leastsq
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// Adapted to be used with google benchmark
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#ifndef COMPLEXITY_H_
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#define COMPLEXITY_H_
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#include <string>
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#include <vector>
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#include "benchmark/benchmark.h"
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namespace benchmark {
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// Return a vector containing the bigO and RMS information for the specified
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// list of reports. If 'reports.size() < 2' an empty vector is returned.
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std::vector<BenchmarkReporter::Run> ComputeBigO(
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const std::vector<BenchmarkReporter::Run>& reports);
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// This data structure will contain the result returned by MinimalLeastSq
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// - coef : Estimated coeficient for the high-order term as
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// interpolated from data.
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// - rms : Normalized Root Mean Squared Error.
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// - complexity : Scalability form (e.g. oN, oNLogN). In case a scalability
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// form has been provided to MinimalLeastSq this will return
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// the same value. In case BigO::oAuto has been selected, this
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// parameter will return the best fitting curve detected.
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struct LeastSq {
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LeastSq() : coef(0.0), rms(0.0), complexity(oNone) {}
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double coef;
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double rms;
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BigO complexity;
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};
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// Function to return an string for the calculated complexity
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std::string GetBigOString(BigO complexity);
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} // end namespace benchmark
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#endif // COMPLEXITY_H_
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