1// -*- C++ -*- 2//===----------------------------------------------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP___ASSERT 11#define _LIBCPP___ASSERT 12 13#include <__config> 14#include <__verbose_abort> 15 16#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17# pragma GCC system_header 18#endif 19 20#define _LIBCPP_ASSERT(expression, message) \ 21 (__builtin_expect(static_cast<bool>(expression), 1) \ 22 ? (void)0 \ 23 : _LIBCPP_VERBOSE_ABORT( \ 24 "%s:%d: assertion %s failed: %s\n", __builtin_FILE(), __builtin_LINE(), #expression, message)) 25 26// TODO: __builtin_assume can currently inhibit optimizations. Until this has been fixed and we can add 27// assumptions without a clear optimization intent, disable that to avoid worsening the code generation. 28// See https://discourse.llvm.org/t/llvm-assume-blocks-optimization/71609 for a discussion. 29#if 0 && __has_builtin(__builtin_assume) 30# define _LIBCPP_ASSUME(expression) \ 31 (_LIBCPP_DIAGNOSTIC_PUSH _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wassume") \ 32 __builtin_assume(static_cast<bool>(expression)) _LIBCPP_DIAGNOSTIC_POP) 33#else 34# define _LIBCPP_ASSUME(expression) ((void)0) 35#endif 36 37#endif // _LIBCPP___ASSERT 38