diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/include/c.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/include/c.h b/src/include/c.h index d5dc3632f74..ff7c2eddcec 100644 --- a/src/include/c.h +++ b/src/include/c.h @@ -192,6 +192,22 @@ #endif /* + * Marking certain functions as "hot" or "cold" can be useful to assist the + * compiler in arranging the assembly code in a more efficient way. + */ +#if defined(__has_attribute) && __has_attribute (cold) +#define pg_attribute_cold __attribute__((cold)) +#else +#define pg_attribute_cold +#endif + +#if defined(__has_attribute) && __has_attribute (hot) +#define pg_attribute_hot __attribute__((hot)) +#else +#define pg_attribute_hot +#endif + +/* * Mark a point as unreachable in a portable fashion. This should preferably * be something that the compiler understands, to aid code generation. * In assert-enabled builds, we prefer abort() for debugging reasons. |