1 | /* Copyright 2020 The TensorFlow Authors. All Rights Reserved. |
2 | |
3 | Licensed under the Apache License, Version 2.0 (the "License"); |
4 | you may not use this file except in compliance with the License. |
5 | You may obtain a copy of the License at |
6 | |
7 | http://www.apache.org/licenses/LICENSE-2.0 |
8 | |
9 | Unless required by applicable law or agreed to in writing, software |
10 | distributed under the License is distributed on an "AS IS" BASIS, |
11 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
12 | See the License for the specific language governing permissions and |
13 | limitations under the License. |
14 | ==============================================================================*/ |
15 | // This provides utility macros and functions that are inherently platform |
16 | // specific. |
17 | #ifndef TENSORFLOW_LITE_CORE_MACROS_H_ |
18 | #define TENSORFLOW_LITE_CORE_MACROS_H_ |
19 | |
20 | #ifdef __has_builtin |
21 | #define TFLITE_HAS_BUILTIN(x) __has_builtin(x) |
22 | #else |
23 | #define TFLITE_HAS_BUILTIN(x) 0 |
24 | #endif |
25 | |
26 | #if (!defined(__NVCC__)) && (TFLITE_HAS_BUILTIN(__builtin_expect) || \ |
27 | (defined(__GNUC__) && __GNUC__ >= 3)) |
28 | #define TFLITE_EXPECT_FALSE(cond) __builtin_expect(cond, false) |
29 | #define TFLITE_EXPECT_TRUE(cond) __builtin_expect(!!(cond), true) |
30 | #else |
31 | #define TFLITE_EXPECT_FALSE(cond) (cond) |
32 | #define TFLITE_EXPECT_TRUE(cond) (cond) |
33 | #endif |
34 | |
35 | // Normally we'd use ABSL_HAVE_ATTRIBUTE_WEAK and ABSL_ATTRIBUTE_WEAK, but |
36 | // we avoid the absl dependency for binary size reasons. |
37 | #ifdef __has_attribute |
38 | #define TFLITE_HAS_ATTRIBUTE(x) __has_attribute(x) |
39 | #else |
40 | #define TFLITE_HAS_ATTRIBUTE(x) 0 |
41 | #endif |
42 | |
43 | #if (TFLITE_HAS_ATTRIBUTE(weak) || \ |
44 | (defined(__GNUC__) && !defined(__clang__))) && \ |
45 | !(defined(__llvm__) && defined(_WIN32)) && !defined(__MINGW32__) |
46 | #undef TFLITE_ATTRIBUTE_WEAK |
47 | #define TFLITE_ATTRIBUTE_WEAK __attribute__((weak)) |
48 | #define TFLITE_HAS_ATTRIBUTE_WEAK 1 |
49 | #else |
50 | #define TFLITE_ATTRIBUTE_WEAK |
51 | #define TFLITE_HAS_ATTRIBUTE_WEAK 0 |
52 | #endif |
53 | |
54 | #endif // TENSORFLOW_LITE_CORE_MACROS_H_ |
55 | |