diff options
Diffstat (limited to 'include/llvm/Support/Compiler.h')
| -rw-r--r-- | include/llvm/Support/Compiler.h | 62 |
1 files changed, 32 insertions, 30 deletions
diff --git a/include/llvm/Support/Compiler.h b/include/llvm/Support/Compiler.h index b2ce76d..6ac7f9c 100644 --- a/include/llvm/Support/Compiler.h +++ b/include/llvm/Support/Compiler.h @@ -19,41 +19,42 @@ /// 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__)) +#define LLVM_ATTRIBUTE_USED __attribute__((__used__)) #else -#define ATTRIBUTE_USED +#define LLVM_ATTRIBUTE_USED #endif +// Some compilers warn about unused functions. When a function is sometimes +// used or not depending on build settings (e.g. a function only called from +// within "assert"), this attribute can be used to suppress such warnings. +// +// However, it shouldn't be used for unused *variables*, as those have a much +// more portable solution: +// (void)unused_var_name; +// Prefer cast-to-void wherever it is sufficient. #if (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)) -#define ATTRIBUTE_UNUSED __attribute__((__unused__)) +#define LLVM_ATTRIBUTE_UNUSED __attribute__((__unused__)) #else -#define ATTRIBUTE_UNUSED +#define LLVM_ATTRIBUTE_UNUSED #endif #ifdef __GNUC__ // aka 'ATTRIBUTE_CONST' but following LLVM Conventions. -#define ATTRIBUTE_READNONE __attribute__((__const__)) +#define LLVM_ATTRIBUTE_READNONE __attribute__((__const__)) #else -#define ATTRIBUTE_READNONE +#define LLVM_ATTRIBUTE_READNONE #endif #ifdef __GNUC__ // aka 'ATTRIBUTE_PURE' but following LLVM Conventions. -#define ATTRIBUTE_READONLY __attribute__((__pure__)) +#define LLVM_ATTRIBUTE_READONLY __attribute__((__pure__)) #else -#define ATTRIBUTE_READONLY +#define LLVM_ATTRIBUTE_READONLY #endif #if (__GNUC__ >= 4) @@ -75,34 +76,35 @@ #define TEMPLATE_INSTANTIATION(X) #endif -// DISABLE_INLINE - On compilers where we have a directive to do so, mark a -// method "not for inlining". +// LLVM_ATTRIBUTE_NOINLINE - 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)) +#define LLVM_ATTRIBUTE_NOINLINE __attribute__((noinline)) #elif defined(_MSC_VER) -#define DISABLE_INLINE __declspec(noinline) +#define LLVM_ATTRIBUTE_NOINLINE __declspec(noinline) #else -#define DISABLE_INLINE +#define LLVM_ATTRIBUTE_NOINLINE #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. +// LLVM_ATTRIBUTE_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)) +#define LLVM_ATTRIBUTE_ALWAYS_INLINE __attribute__((always_inline)) +#elif defined(_MSC_VER) +#define LLVM_ATTRIBUTE_ALWAYS_INLINE __forceinline #else -// TODO: No idea how to do this with MSVC. -#define ALWAYS_INLINE +#define LLVM_ATTRIBUTE_ALWAYS_INLINE #endif #ifdef __GNUC__ -#define NORETURN __attribute__((noreturn)) +#define LLVM_ATTRIBUTE_NORETURN __attribute__((noreturn)) #elif defined(_MSC_VER) -#define NORETURN __declspec(noreturn) +#define LLVM_ATTRIBUTE_NORETURN __declspec(noreturn) #else -#define NORETURN +#define LLVM_ATTRIBUTE_NORETURN #endif #endif |