diff options
Diffstat (limited to 'src/common/compat.h')
| -rw-r--r-- | src/common/compat.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/common/compat.h b/src/common/compat.h index 07f194282f..a6c339ee73 100644 --- a/src/common/compat.h +++ b/src/common/compat.h @@ -98,15 +98,17 @@ extern INLINE double U64_TO_DBL(uint64_t x) { #define ATTR_PURE __attribute__((pure)) #define ATTR_MALLOC __attribute__((malloc)) #define ATTR_NONNULL(x) __attribute__((nonnull x)) -#define PREDICT(exp, val) __builtin_expect((exp), (val)) -#define PREDICT_LIKELY(exp) PREDICT((exp), 1) -#define PREDICT_UNLIKELY(exp) PREDICT((exp), 0) +/** Macro: Evaluates to <b>exp</b> and hints the compiler that the value + * of <b>exp</b> will probably be true. */ +#define PREDICT_LIKELY(exp) __builtin_expect((exp), 1) +/** Macro: Evaluates to <b>exp</b> and hints the compiler that the value + * of <b>exp</b> will probably be false. */ +#define PREDICT_UNLIKELY(exp) __builtin_expect((exp), 0) #else #define ATTR_NORETURN #define ATTR_PURE #define ATTR_MALLOC #define ATTR_NONNULL(x) -#define PREDICT(exp, val) (exp) #define PREDICT_LIKELY(exp) (exp) #define PREDICT_UNLIKELY(exp) (exp) #endif |