diff options
Diffstat (limited to 'src/langext.h')
| -rw-r--r-- | src/langext.h | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/src/langext.h b/src/langext.h index de96ef5..0624b71 100644 --- a/src/langext.h +++ b/src/langext.h @@ -16,7 +16,8 @@ #define if_random(x) if (__builtin_expect_with_probability(!!(x), 1, 0.5)) #define unreachable __builtin_unreachable() #define assume(x) ((void)(!!(x) || (unreachable, 0))) -#define cold __attribute__((__cold__, __noinline__)) +#define cold __attribute((__cold__, __noinline__)) +#define asm_only __attribute((__naked__)) // N.B.: may not actually work in GCC? #else #define if_hot(x) if (x) #define if_cold(x) if (x) @@ -25,11 +26,13 @@ #define unreachable __assume(0) #define assume(x) ((void)(__assume(x), 0)) #define cold __declspec(noinline) +#define asm_only __declspec(naked) #else static inline _Noreturn void _invoke_ub() {} #define unreachable (_invoke_ub()) #define assume(x) ((void)(!!(x) || (_invoke_ub(), 0))) #define cold +//#define asm_only // Can't use this without Clang/GCC/MSVC. Too bad. #endif #endif @@ -57,12 +60,23 @@ static inline _Noreturn void _invoke_ub() {} #define import #ifdef __GNUC__ // N.B. we assume -fvisibility=hidden -#define export __attribute__((visibility("default")) +#define export __attribute((visibility("default")) #else #define export int exp[-!!"compiler needs a way to export symbols!"]; #endif #endif +#ifdef __clang__ +#define tailcall \ + /* Clang forces us to use void return and THEN warns about it ._. */ \ + _Pragma("clang diagnostic push") \ + _Pragma("clang diagnostic ignored \"-Wpedantic\"") \ + __attribute((musttail)) return \ + _Pragma("clang diagnostic pop") +#else +//#define tailcall // Can't use this without Clang. +#endif + #endif // vi: sw=4 ts=4 noet tw=80 cc=80 |