mirror of
https://github.com/llvm/llvm-project.git
synced 2025-04-26 22:36:06 +00:00
78b4b5cccb
This is an intermediate and fairly mechanical step towards unifying the benchmarks with the rest of the test suite. Moving this around requires a few changes, notably making sure we don't throw a wrench into the discovery process of the normal test suite. This won't be a problem anymore once benchmarks are taken into account by the test setup out of the box.
56 lines
1.5 KiB
C++
56 lines
1.5 KiB
C++
// -*- C++ -*-
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef BENCHMARK_VARIANT_BENCHMARKS_H
|
|
#define BENCHMARK_VARIANT_BENCHMARKS_H
|
|
|
|
#include <array>
|
|
#include <cstddef>
|
|
#include <tuple>
|
|
#include <type_traits>
|
|
#include <variant>
|
|
|
|
#include "benchmark/benchmark.h"
|
|
|
|
#include "GenerateInput.h"
|
|
|
|
namespace VariantBenchmarks {
|
|
|
|
template <std::size_t I>
|
|
struct S {
|
|
static constexpr size_t v = I;
|
|
};
|
|
|
|
template <std::size_t N, std::size_t... Is>
|
|
static auto genVariants(std::index_sequence<Is...>) {
|
|
using V = std::variant<S<Is>...>;
|
|
using F = V (*)();
|
|
static constexpr F fs[] = {[] { return V(std::in_place_index<Is>); }...};
|
|
|
|
std::array<V, N> result = {};
|
|
for (auto& v : result) {
|
|
v = fs[getRandomInteger(0ul, sizeof...(Is) - 1)]();
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
template <std::size_t N, std::size_t Alts>
|
|
static void BM_Visit(benchmark::State& state) {
|
|
auto args = genVariants<N>(std::make_index_sequence<Alts>{});
|
|
for (auto _ : state) {
|
|
benchmark::DoNotOptimize(
|
|
std::apply([](auto... vs) { return std::visit([](auto... is) { return (is.v + ... + 0); }, vs...); }, args));
|
|
}
|
|
}
|
|
|
|
} // end namespace VariantBenchmarks
|
|
|
|
#endif // BENCHMARK_VARIANT_BENCHMARKS_H
|