XNNPACK Team | b455b12 | 2019-09-27 18:10:33 -0700 | [diff] [blame^] | 1 | // Copyright (c) Facebook, Inc. and its affiliates. |
| 2 | // All rights reserved. |
| 3 | // |
| 4 | // Copyright 2019 Google LLC |
| 5 | // |
| 6 | // This source code is licensed under the BSD-style license found in the |
| 7 | // LICENSE file in the root directory of this source tree. |
| 8 | |
| 9 | #pragma once |
| 10 | |
| 11 | |
| 12 | #if defined(__GNUC__) |
| 13 | #if defined(__clang__) || (__GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__ >= 5) |
| 14 | #define XNN_UNREACHABLE do { __builtin_unreachable(); } while (0) |
| 15 | #else |
| 16 | #define XNN_UNREACHABLE do { __builtin_trap(); } while (0) |
| 17 | #endif |
| 18 | #elif defined(_MSC_VER) |
| 19 | #define XNN_UNREACHABLE __assume(0) |
| 20 | #else |
| 21 | #define XNN_UNREACHABLE do { } while (0) |
| 22 | #endif |
| 23 | |
| 24 | #define XNN_ALIGN(alignment) __attribute__((__aligned__(alignment))) |
| 25 | |
| 26 | #define XNN_COUNT_OF(array) (sizeof(array) / sizeof(0[array])) |
| 27 | |
| 28 | #if defined(__GNUC__) |
| 29 | #define XNN_LIKELY(condition) (__builtin_expect(!!(condition), 1)) |
| 30 | #define XNN_UNLIKELY(condition) (__builtin_expect(!!(condition), 0)) |
| 31 | #else |
| 32 | #define XNN_LIKELY(condition) (!!(condition)) |
| 33 | #define XNN_UNLIKELY(condition) (!!(condition)) |
| 34 | #endif |
| 35 | |
| 36 | // TODO - __builtin_expect_with_probability for GCC 9+ |
| 37 | #if defined(__clang__) && (__has_builtin(__builtin_unpredictable)) |
| 38 | #define XNN_UNPREDICTABLE(condition) (__builtin_unpredictable(!!(condition))) |
| 39 | #else |
| 40 | #define XNN_UNPREDICTABLE(condition) (!!(condition)) |
| 41 | #endif |
| 42 | |
| 43 | #if defined(__GNUC__) |
| 44 | #define XNN_INLINE inline __attribute__((__always_inline__)) |
| 45 | #else |
| 46 | #define XNN_INLINE inline |
| 47 | #endif |
| 48 | |
| 49 | #ifndef XNN_INTERNAL |
| 50 | #if defined(__ELF__) |
| 51 | #define XNN_INTERNAL __attribute__((__visibility__("internal"))) |
| 52 | #elif defined(__MACH__) |
| 53 | #define XNN_INTERNAL __attribute__((__visibility__("hidden"))) |
| 54 | #else |
| 55 | #define XNN_INTERNAL |
| 56 | #endif |
| 57 | #endif |
| 58 | |
| 59 | #ifndef XNN_PRIVATE |
| 60 | #if defined(__ELF__) |
| 61 | #define XNN_PRIVATE __attribute__((__visibility__("hidden"))) |
| 62 | #elif defined(__MACH__) |
| 63 | #define XNN_PRIVATE __attribute__((__visibility__("hidden"))) |
| 64 | #else |
| 65 | #define XNN_PRIVATE |
| 66 | #endif |
| 67 | #endif |