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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef BASE_COMPILER_SPECIFIC_H_ | 5 #ifndef BASE_COMPILER_SPECIFIC_H_ |
| 6 #define BASE_COMPILER_SPECIFIC_H_ | 6 #define BASE_COMPILER_SPECIFIC_H_ |
| 7 | 7 |
| 8 #include "build/build_config.h" | 8 #include "build/build_config.h" |
| 9 | 9 |
| 10 #if defined(COMPILER_MSVC) | 10 #if defined(COMPILER_MSVC) |
| (...skipping 188 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 199 #if !defined(UNLIKELY) | 199 #if !defined(UNLIKELY) |
| 200 #if defined(COMPILER_GCC) | 200 #if defined(COMPILER_GCC) |
| 201 #define UNLIKELY(x) __builtin_expect(!!(x), 0) | 201 #define UNLIKELY(x) __builtin_expect(!!(x), 0) |
| 202 #else | 202 #else |
| 203 #define UNLIKELY(x) (x) | 203 #define UNLIKELY(x) (x) |
| 204 #endif // defined(COMPILER_GCC) | 204 #endif // defined(COMPILER_GCC) |
| 205 #endif // !defined(UNLIKELY) | 205 #endif // !defined(UNLIKELY) |
| 206 | 206 |
| 207 #if !defined(LIKELY) | 207 #if !defined(LIKELY) |
| 208 #if defined(COMPILER_GCC) | 208 #if defined(COMPILER_GCC) |
| 209 #define LIKELY(x) __builtin_expect((x), 1) | 209 #define LIKELY(x) __builtin_expect(!!(x), 1) |
| 210 #else | 210 #else |
| 211 #define LIKELY(x) (x) | 211 #define LIKELY(x) (x) |
| 212 #endif // defined(COMPILER_GCC) | 212 #endif // defined(COMPILER_GCC) |
| 213 #endif // !defined(LIKELY) | 213 #endif // !defined(LIKELY) |
| 214 | 214 |
| 215 // Compiler feature-detection. | 215 // Compiler feature-detection. |
| 216 // clang.llvm.org/docs/LanguageExtensions.html#has-feature-and-has-extension | 216 // clang.llvm.org/docs/LanguageExtensions.html#has-feature-and-has-extension |
| 217 #if defined(__has_feature) | 217 #if defined(__has_feature) |
| 218 #define HAS_FEATURE(FEATURE) __has_feature(FEATURE) | 218 #define HAS_FEATURE(FEATURE) __has_feature(FEATURE) |
| 219 #else | 219 #else |
| 220 #define HAS_FEATURE(FEATURE) 0 | 220 #define HAS_FEATURE(FEATURE) 0 |
| 221 #endif | 221 #endif |
| 222 | 222 |
| 223 #endif // BASE_COMPILER_SPECIFIC_H_ | 223 #endif // BASE_COMPILER_SPECIFIC_H_ |
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Chromium Code Reviews
Issue 2507293002:
Correct the check in LIKELY. (Closed)
