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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
| commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
| tree | f435a8308119effd964b339f76abb83a57c29483 /mfbt/Likely.h | |
| parent | Initial commit. (diff) | |
| download | firefox-upstream/124.0.1.tar.xz firefox-upstream/124.0.1.zip | |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'mfbt/Likely.h')
| -rw-r--r-- | mfbt/Likely.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/mfbt/Likely.h b/mfbt/Likely.h new file mode 100644 index 0000000000..5b65e97241 --- /dev/null +++ b/mfbt/Likely.h @@ -0,0 +1,23 @@ +/* -*- 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 */ |