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6b547686c5
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351636 91177308-0d34-0410-b5e6-96231b3b80d8
100 lines
3.1 KiB
C++
100 lines
3.1 KiB
C++
//===--- DemangleConfig.h ---------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains a variety of feature test macros copied from
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// include/llvm/Support/Compiler.h so that LLVMDemangle does not need to take
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// a dependency on LLVMSupport.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_DEMANGLE_COMPILER_H
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#define LLVM_DEMANGLE_COMPILER_H
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#ifdef _MSC_VER
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// snprintf is implemented in VS 2015
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#if _MSC_VER < 1900
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#define snprintf _snprintf_s
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#endif
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#endif
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#ifndef __has_feature
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#define __has_feature(x) 0
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#endif
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#ifndef __has_cpp_attribute
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#define __has_cpp_attribute(x) 0
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#endif
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#ifndef __has_attribute
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#define __has_attribute(x) 0
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#endif
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#ifndef __has_builtin
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#define __has_builtin(x) 0
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#endif
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#ifndef DEMANGLE_GNUC_PREREQ
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#if defined(__GNUC__) && defined(__GNUC_MINOR__) && defined(__GNUC_PATCHLEVEL__)
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#define DEMANGLE_GNUC_PREREQ(maj, min, patch) \
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((__GNUC__ << 20) + (__GNUC_MINOR__ << 10) + __GNUC_PATCHLEVEL__ >= \
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((maj) << 20) + ((min) << 10) + (patch))
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#elif defined(__GNUC__) && defined(__GNUC_MINOR__)
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#define DEMANGLE_GNUC_PREREQ(maj, min, patch) \
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((__GNUC__ << 20) + (__GNUC_MINOR__ << 10) >= ((maj) << 20) + ((min) << 10))
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#else
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#define DEMANGLE_GNUC_PREREQ(maj, min, patch) 0
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#endif
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#endif
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#if __has_attribute(used) || DEMANGLE_GNUC_PREREQ(3, 1, 0)
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#define DEMANGLE_ATTRIBUTE_USED __attribute__((__used__))
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#else
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#define DEMANGLE_ATTRIBUTE_USED
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#endif
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#if __has_builtin(__builtin_unreachable) || DEMANGLE_GNUC_PREREQ(4, 5, 0)
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#define DEMANGLE_UNREACHABLE __builtin_unreachable()
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#elif defined(_MSC_VER)
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#define DEMANGLE_UNREACHABLE __assume(false)
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#else
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#define DEMANGLE_UNREACHABLE
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#endif
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#if __has_attribute(noinline) || DEMANGLE_GNUC_PREREQ(3, 4, 0)
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#define DEMANGLE_ATTRIBUTE_NOINLINE __attribute__((noinline))
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#elif defined(_MSC_VER)
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#define DEMANGLE_ATTRIBUTE_NOINLINE __declspec(noinline)
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#else
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#define DEMANGLE_ATTRIBUTE_NOINLINE
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#endif
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#if !defined(NDEBUG)
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#define DEMANGLE_DUMP_METHOD DEMANGLE_ATTRIBUTE_NOINLINE DEMANGLE_ATTRIBUTE_USED
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#else
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#define DEMANGLE_DUMP_METHOD DEMANGLE_ATTRIBUTE_NOINLINE
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#endif
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#if __cplusplus > 201402L && __has_cpp_attribute(fallthrough)
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#define DEMANGLE_FALLTHROUGH [[fallthrough]]
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#elif __has_cpp_attribute(gnu::fallthrough)
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#define DEMANGLE_FALLTHROUGH [[gnu::fallthrough]]
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#elif !__cplusplus
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// Workaround for llvm.org/PR23435, since clang 3.6 and below emit a spurious
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// error when __has_cpp_attribute is given a scoped attribute in C mode.
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#define DEMANGLE_FALLTHROUGH
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#elif __has_cpp_attribute(clang::fallthrough)
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#define DEMANGLE_FALLTHROUGH [[clang::fallthrough]]
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#else
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#define DEMANGLE_FALLTHROUGH
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#endif
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#define DEMANGLE_NAMESPACE_BEGIN namespace llvm { namespace itanium_demangle {
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#define DEMANGLE_NAMESPACE_END } }
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#endif
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