1 | //===--- DemangleConfig.h ---------------------------------------*- C++ -*-===// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | // |
9 | // This file contains a variety of feature test macros copied from |
10 | // include/llvm/Support/Compiler.h so that LLVMDemangle does not need to take |
11 | // a dependency on LLVMSupport. |
12 | // |
13 | //===----------------------------------------------------------------------===// |
14 | |
15 | #ifndef LLVM_DEMANGLE_DEMANGLECONFIG_H |
16 | #define LLVM_DEMANGLE_DEMANGLECONFIG_H |
17 | |
18 | #ifndef __has_feature |
19 | #define __has_feature(x) 0 |
20 | #endif |
21 | |
22 | #ifndef __has_cpp_attribute |
23 | #define __has_cpp_attribute(x) 0 |
24 | #endif |
25 | |
26 | #ifndef __has_attribute |
27 | #define __has_attribute(x) 0 |
28 | #endif |
29 | |
30 | #ifndef __has_builtin |
31 | #define __has_builtin(x) 0 |
32 | #endif |
33 | |
34 | #ifndef DEMANGLE_GNUC_PREREQ |
35 | #if defined(__GNUC__) && defined(__GNUC_MINOR__) && defined(__GNUC_PATCHLEVEL__) |
36 | #define DEMANGLE_GNUC_PREREQ(maj, min, patch) \ |
37 | ((__GNUC__ << 20) + (__GNUC_MINOR__ << 10) + __GNUC_PATCHLEVEL__ >= \ |
38 | ((maj) << 20) + ((min) << 10) + (patch)) |
39 | #elif defined(__GNUC__) && defined(__GNUC_MINOR__) |
40 | #define DEMANGLE_GNUC_PREREQ(maj, min, patch) \ |
41 | ((__GNUC__ << 20) + (__GNUC_MINOR__ << 10) >= ((maj) << 20) + ((min) << 10)) |
42 | #else |
43 | #define DEMANGLE_GNUC_PREREQ(maj, min, patch) 0 |
44 | #endif |
45 | #endif |
46 | |
47 | #if __has_attribute(used) || DEMANGLE_GNUC_PREREQ(3, 1, 0) |
48 | #define DEMANGLE_ATTRIBUTE_USED __attribute__((__used__)) |
49 | #else |
50 | #define DEMANGLE_ATTRIBUTE_USED |
51 | #endif |
52 | |
53 | #if __has_builtin(__builtin_unreachable) || DEMANGLE_GNUC_PREREQ(4, 5, 0) |
54 | #define DEMANGLE_UNREACHABLE __builtin_unreachable() |
55 | #elif defined(_MSC_VER) |
56 | #define DEMANGLE_UNREACHABLE __assume(false) |
57 | #else |
58 | #define DEMANGLE_UNREACHABLE |
59 | #endif |
60 | |
61 | #if __has_attribute(noinline) || DEMANGLE_GNUC_PREREQ(3, 4, 0) |
62 | #define DEMANGLE_ATTRIBUTE_NOINLINE __attribute__((noinline)) |
63 | #elif defined(_MSC_VER) |
64 | #define DEMANGLE_ATTRIBUTE_NOINLINE __declspec(noinline) |
65 | #else |
66 | #define DEMANGLE_ATTRIBUTE_NOINLINE |
67 | #endif |
68 | |
69 | #if !defined(NDEBUG) |
70 | #define DEMANGLE_DUMP_METHOD DEMANGLE_ATTRIBUTE_NOINLINE DEMANGLE_ATTRIBUTE_USED |
71 | #else |
72 | #define DEMANGLE_DUMP_METHOD DEMANGLE_ATTRIBUTE_NOINLINE |
73 | #endif |
74 | |
75 | #if __cplusplus > 201402L && __has_cpp_attribute(fallthrough) |
76 | #define DEMANGLE_FALLTHROUGH [[fallthrough]] |
77 | #elif __has_cpp_attribute(gnu::fallthrough) |
78 | #define DEMANGLE_FALLTHROUGH [[gnu::fallthrough]] |
79 | #elif !__cplusplus |
80 | // Workaround for llvm.org/PR23435, since clang 3.6 and below emit a spurious |
81 | // error when __has_cpp_attribute is given a scoped attribute in C mode. |
82 | #define DEMANGLE_FALLTHROUGH |
83 | #elif __has_cpp_attribute(clang::fallthrough) |
84 | #define DEMANGLE_FALLTHROUGH [[clang::fallthrough]] |
85 | #else |
86 | #define DEMANGLE_FALLTHROUGH |
87 | #endif |
88 | |
89 | #ifndef DEMANGLE_ASSERT |
90 | #include <cassert> |
91 | #define DEMANGLE_ASSERT(__expr, __msg) assert((__expr) && (__msg)) |
92 | #endif |
93 | |
94 | #define DEMANGLE_NAMESPACE_BEGIN namespace llvm { namespace itanium_demangle { |
95 | #define DEMANGLE_NAMESPACE_END } } |
96 | |
97 | #endif |
98 | |