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| author |   patrick <patrick@openbsd.org> | 2021-01-02 20:29:13 +0000 |
|---|---|---|
| committer | patrick <patrick@openbsd.org> | 2021-01-02 20:29:13 +0000 |
| commit | 46035553bfdd96e63c94e32da0210227ec2e3cf1 (patch) | |
| tree | b191f708fb9a2995ba745b2f31cdeeaee4872b7f /gnu/llvm/libcxx/benchmarks/Utilities.h | |
| parent | Move Makefiles for libc++ and libc++abi to gnu/lib in preparation for an (diff) | |
| download | wireguard-openbsd-46035553bfdd96e63c94e32da0210227ec2e3cf1.tar.xz wireguard-openbsd-46035553bfdd96e63c94e32da0210227ec2e3cf1.zip | |
Import libc++ 10.0.1 release.
Diffstat (limited to 'gnu/llvm/libcxx/benchmarks/Utilities.h')
| -rw-r--r-- | gnu/llvm/libcxx/benchmarks/Utilities.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/gnu/llvm/libcxx/benchmarks/Utilities.h b/gnu/llvm/libcxx/benchmarks/Utilities.h new file mode 100644 index 00000000000..9ad2a58796e --- /dev/null +++ b/gnu/llvm/libcxx/benchmarks/Utilities.h @@ -0,0 +1,33 @@ +// -*- 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_UTILITIES_H +#define BENCHMARK_UTILITIES_H + +#include <cassert> +#include <type_traits> + +#include "benchmark/benchmark.h" + +namespace UtilitiesInternal { + template <class Container> + auto HaveDataImpl(int) -> decltype((std::declval<Container&>().data(), std::true_type{})); + template <class Container> + auto HaveDataImpl(long) -> std::false_type; + template <class T> + using HasData = decltype(HaveDataImpl<T>(0)); +} // namespace UtilitiesInternal + +template <class Container, std::enable_if_t<UtilitiesInternal::HasData<Container>::value>* = nullptr> +void DoNotOptimizeData(Container &c) { benchmark::DoNotOptimize(c.data()); } +template <class Container, std::enable_if_t<!UtilitiesInternal::HasData<Container>::value>* = nullptr> +void DoNotOptimizeData(Container &c) { benchmark::DoNotOptimize(&c); } + + +#endif // BENCHMARK_UTILITIES_H |