| /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| /* vim: set ts=8 sts=2 et sw=2 tw=80: */ |
| /* This Source Code Form is subject to the terms of the Mozilla Public |
| * License, v. 2.0. If a copy of the MPL was not distributed with this |
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| |
| /* |
| * MOZ_LIKELY and MOZ_UNLIKELY macros to hint to the compiler how a |
| * boolean predicate should be branch-predicted. |
| */ |
| |
| #ifndef mozilla_Likely_h |
| #define mozilla_Likely_h |
| |
| #if defined(__clang__) || defined(__GNUC__) |
| # define MOZ_LIKELY(x) (__builtin_expect(!!(x), 1)) |
| # define MOZ_UNLIKELY(x) (__builtin_expect(!!(x), 0)) |
| #else |
| # define MOZ_LIKELY(x) (!!(x)) |
| # define MOZ_UNLIKELY(x) (!!(x)) |
| #endif |
| |
| #endif /* mozilla_Likely_h */ |
