mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-11 08:07:22 +00:00
16d8f8bd91
to LLVM_LIBRARY_VISIBILITY and introduce LLVM_GLOBAL_VISIBILITY, which is the opposite, for future use by dragonegg. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103495 91177308-0d34-0410-b5e6-96231b3b80d8
109 lines
3.6 KiB
C++
109 lines
3.6 KiB
C++
//===-- llvm/Support/Compiler.h - Compiler abstraction support --*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines several macros, based on the current compiler. This allows
|
|
// use of compiler-specific features in a way that remains portable.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_SUPPORT_COMPILER_H
|
|
#define LLVM_SUPPORT_COMPILER_H
|
|
|
|
/// LLVM_LIBRARY_VISIBILITY - If a class marked with this attribute is linked
|
|
/// into a shared library, then the class should be private to the library and
|
|
/// not accessible from outside it. Can also be used to mark variables and
|
|
/// functions, making them private to any shared library they are linked into.
|
|
|
|
/// LLVM_GLOBAL_VISIBILITY - If a class marked with this attribute is linked
|
|
/// into a shared library, then the class will be accessible from outside the
|
|
/// the library. Can also be used to mark variables and functions, making them
|
|
/// accessible from outside any shared library they are linked into.
|
|
#if (__GNUC__ >= 4) && !defined(__MINGW32__) && !defined(__CYGWIN__)
|
|
#define LLVM_LIBRARY_VISIBILITY __attribute__ ((visibility("hidden")))
|
|
#define LLVM_GLOBAL_VISIBILITY __attribute__ ((visibility("default")))
|
|
#else
|
|
#define LLVM_LIBRARY_VISIBILITY
|
|
#define LLVM_GLOBAL_VISIBILITY
|
|
#endif
|
|
|
|
#if (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1))
|
|
#define ATTRIBUTE_USED __attribute__((__used__))
|
|
#else
|
|
#define ATTRIBUTE_USED
|
|
#endif
|
|
|
|
#if (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1))
|
|
#define ATTRIBUTE_UNUSED __attribute__((__unused__))
|
|
#else
|
|
#define ATTRIBUTE_UNUSED
|
|
#endif
|
|
|
|
#ifdef __GNUC__ // aka 'ATTRIBUTE_CONST' but following LLVM Conventions.
|
|
#define ATTRIBUTE_READNONE __attribute__((__const__))
|
|
#else
|
|
#define ATTRIBUTE_READNONE
|
|
#endif
|
|
|
|
#ifdef __GNUC__ // aka 'ATTRIBUTE_PURE' but following LLVM Conventions.
|
|
#define ATTRIBUTE_READONLY __attribute__((__pure__))
|
|
#else
|
|
#define ATTRIBUTE_READONLY
|
|
#endif
|
|
|
|
#if (__GNUC__ >= 4)
|
|
#define BUILTIN_EXPECT(EXPR, VALUE) __builtin_expect((EXPR), (VALUE))
|
|
#else
|
|
#define BUILTIN_EXPECT(EXPR, VALUE) (EXPR)
|
|
#endif
|
|
|
|
// C++ doesn't support 'extern template' of template specializations. GCC does,
|
|
// but requires __extension__ before it. In the header, use this:
|
|
// EXTERN_TEMPLATE_INSTANTIATION(class foo<bar>);
|
|
// in the .cpp file, use this:
|
|
// TEMPLATE_INSTANTIATION(class foo<bar>);
|
|
#ifdef __GNUC__
|
|
#define EXTERN_TEMPLATE_INSTANTIATION(X) __extension__ extern template X
|
|
#define TEMPLATE_INSTANTIATION(X) template X
|
|
#else
|
|
#define EXTERN_TEMPLATE_INSTANTIATION(X)
|
|
#define TEMPLATE_INSTANTIATION(X)
|
|
#endif
|
|
|
|
// DISABLE_INLINE - On compilers where we have a directive to do so, mark a
|
|
// method "not for inlining".
|
|
#if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
|
|
#define DISABLE_INLINE __attribute__((noinline))
|
|
#elif defined(_MSC_VER)
|
|
#define DISABLE_INLINE __declspec(noinline)
|
|
#else
|
|
#define DISABLE_INLINE
|
|
#endif
|
|
|
|
// ALWAYS_INLINE - On compilers where we have a directive to do so, mark a
|
|
// method "always inline" because it is performance sensitive.
|
|
// GCC 3.4 supported this but is buggy in various cases and produces
|
|
// unimplemented errors, just use it in GCC 4.0 and later.
|
|
#if __GNUC__ > 3
|
|
#define ALWAYS_INLINE __attribute__((always_inline))
|
|
#else
|
|
// TODO: No idea how to do this with MSVC.
|
|
#define ALWAYS_INLINE
|
|
#endif
|
|
|
|
|
|
#ifdef __GNUC__
|
|
#define NORETURN __attribute__((noreturn))
|
|
#elif defined(_MSC_VER)
|
|
#define NORETURN __declspec(noreturn)
|
|
#else
|
|
#define NORETURN
|
|
#endif
|
|
|
|
#endif
|