diff options
| -rw-r--r-- | libcxxabi/src/demangle/DemangleConfig.h | 80 |
1 files changed, 68 insertions, 12 deletions
diff --git a/libcxxabi/src/demangle/DemangleConfig.h b/libcxxabi/src/demangle/DemangleConfig.h index be3ea59d9bd..9d818535b09 100644 --- a/libcxxabi/src/demangle/DemangleConfig.h +++ b/libcxxabi/src/demangle/DemangleConfig.h @@ -1,17 +1,17 @@ -//===--- Compiler.h ---------------------------------------------*- C++ -*-===// +//===--- DemangleConfig.h --------------------------------------*- C++ -*-===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // // This file is contains a subset of macros copied from -// llvm/lib/Demangle/Compiler.h. +// llvm/include/llvm/Demangle/DemangleConfig.h //===----------------------------------------------------------------------===// -#ifndef LIBCXX_DEMANGLE_COMPILER_H -#define LIBCXX_DEMANGLE_COMPILER_H +#ifndef LIBCXXABI_DEMANGLE_DEMANGLE_CONFIG_H +#define LIBCXXABI_DEMANGLE_DEMANGLE_CONFIG_H -#include "__config" +#include <ciso646> #ifdef _MSC_VER // snprintf is implemented in VS 2015 @@ -20,22 +20,78 @@ #endif #endif +#ifndef __has_feature +#define __has_feature(x) 0 +#endif + +#ifndef __has_cpp_attribute +#define __has_cpp_attribute(x) 0 +#endif + #ifndef __has_attribute #define __has_attribute(x) 0 #endif -#ifndef NDEBUG -#if __has_attribute(noinline) && __has_attribute(used) -#define DEMANGLE_DUMP_METHOD __attribute__((noinline, used)) +#ifndef __has_builtin +#define __has_builtin(x) 0 +#endif + +#ifndef DEMANGLE_GNUC_PREREQ +#if defined(__GNUC__) && defined(__GNUC_MINOR__) && defined(__GNUC_PATCHLEVEL__) +#define DEMANGLE_GNUC_PREREQ(maj, min, patch) \ + ((__GNUC__ << 20) + (__GNUC_MINOR__ << 10) + __GNUC_PATCHLEVEL__ >= \ + ((maj) << 20) + ((min) << 10) + (patch)) +#elif defined(__GNUC__) && defined(__GNUC_MINOR__) +#define DEMANGLE_GNUC_PREREQ(maj, min, patch) \ + ((__GNUC__ << 20) + (__GNUC_MINOR__ << 10) >= ((maj) << 20) + ((min) << 10)) #else -#define DEMANGLE_DUMP_METHOD +#define DEMANGLE_GNUC_PREREQ(maj, min, patch) 0 #endif #endif -#define DEMANGLE_FALLTHROUGH _LIBCPP_FALLTHROUGH() -#define DEMANGLE_UNREACHABLE _LIBCPP_UNREACHABLE() +#if __has_attribute(used) || DEMANGLE_GNUC_PREREQ(3, 1, 0) +#define DEMANGLE_ATTRIBUTE_USED __attribute__((__used__)) +#else +#define DEMANGLE_ATTRIBUTE_USED +#endif + +#if __has_builtin(__builtin_unreachable) || DEMANGLE_GNUC_PREREQ(4, 5, 0) +#define DEMANGLE_UNREACHABLE __builtin_unreachable() +#elif defined(_MSC_VER) +#define DEMANGLE_UNREACHABLE __assume(false) +#else +#define DEMANGLE_UNREACHABLE +#endif + +#if __has_attribute(noinline) || DEMANGLE_GNUC_PREREQ(3, 4, 0) +#define DEMANGLE_ATTRIBUTE_NOINLINE __attribute__((noinline)) +#elif defined(_MSC_VER) +#define DEMANGLE_ATTRIBUTE_NOINLINE __declspec(noinline) +#else +#define DEMANGLE_ATTRIBUTE_NOINLINE +#endif + +#if !defined(NDEBUG) +#define DEMANGLE_DUMP_METHOD DEMANGLE_ATTRIBUTE_NOINLINE DEMANGLE_ATTRIBUTE_USED +#else +#define DEMANGLE_DUMP_METHOD DEMANGLE_ATTRIBUTE_NOINLINE +#endif + +#if __cplusplus > 201402L && __has_cpp_attribute(fallthrough) +#define DEMANGLE_FALLTHROUGH [[fallthrough]] +#elif __has_cpp_attribute(gnu::fallthrough) +#define DEMANGLE_FALLTHROUGH [[gnu::fallthrough]] +#elif !__cplusplus +// Workaround for llvm.org/PR23435, since clang 3.6 and below emit a spurious +// error when __has_cpp_attribute is given a scoped attribute in C mode. +#define DEMANGLE_FALLTHROUGH +#elif __has_cpp_attribute(clang::fallthrough) +#define DEMANGLE_FALLTHROUGH [[clang::fallthrough]] +#else +#define DEMANGLE_FALLTHROUGH +#endif #define DEMANGLE_NAMESPACE_BEGIN namespace { namespace itanium_demangle { #define DEMANGLE_NAMESPACE_END } } -#endif +#endif // LIBCXXABI_DEMANGLE_DEMANGLE_CONFIG_H |
