diff --git a/src/common/common_funcs.h b/src/common/common_funcs.h
index 4633897ce..8d40daded 100644
--- a/src/common/common_funcs.h
+++ b/src/common/common_funcs.h
@@ -29,6 +29,14 @@
     #define FORCE_INLINE inline __attribute__((always_inline))
 #endif
 
+#if defined(__GNUC__)
+    #define likely(x) __builtin_expect(!!(x), 1)
+    #define unlikely(x) __builtin_expect(!!(x), 0)
+#else
+    #define likely(x) (x)
+    #define unlikely(x) (x)
+#endif
+
 #ifndef _MSC_VER
 
 #ifdef ARCHITECTURE_x86_64