| //===----------------------------------------------------------------------===// | |
| // | |
| // 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 _LIBCPP___UTILITY_ASSUME_H | |
| #define _LIBCPP___UTILITY_ASSUME_H | |
| #include <__config> | |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) | |
| # pragma GCC system_header | |
| #endif | |
| _LIBCPP_PUSH_MACROS | |
| #include <__undef_macros> | |
| _LIBCPP_BEGIN_NAMESPACE_STD | |
| // WARNING: [[assume]] can currently inhibit optimizations. Only add assumptions with a clear optimization intent. | |
| // See https://discourse.llvm.org/t/llvm-assume-blocks-optimization/71609 for a discussion. | |
| _LIBCPP_HIDE_FROM_ABI inline _LIBCPP_CONSTEXPR_SINCE_CXX14 void __assume(bool __cond) { [[__assume__(__cond)]]; } | |
| _LIBCPP_END_NAMESPACE_STD | |
| _LIBCPP_POP_MACROS | |
| #endif // _LIBCPP___UTILITY_ASSUME_H |