utils.h: introduce LIKELY and UNLIKELY based on __builtin_expect

d598d1db · Vivek Das Mohapatra · 8144d710 · d598d1db
Commit d598d1db authored Jan 03, 2018 by Vivek Das Mohapatra
--- a/utils/utils.h
+++ b/utils/utils.h
@@ -26,6 +26,9 @@

 #include "debug.h"

+#define UNLIKELY(x) __builtin_expect(x, 0)
+#define LIKELY(x)   __builtin_expect(x, 1)
+
 // these macros are secretly the same for elf32 & elf64:
 #define ELFW_ST_TYPE(a)       ELF32_ST_TYPE(a)
 #define ELFW_ST_BIND(a)       ELF32_ST_BIND(a)