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-rw-r--r--src/localconsts.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/localconsts.h b/src/localconsts.h
index af97ff723..12c14a5e7 100644
--- a/src/localconsts.h
+++ b/src/localconsts.h
@@ -223,6 +223,14 @@
#endif // ENABLE_CILKPLUS
#endif // __GNUC__
+#ifdef __GNUC__
+#define A_LIKELY(x) __builtin_expect (!!(x), 1)
+#define A_UNLIKELY(x) __builtin_expect (!!(x), 0)
+#else // __GNUC__
+#define A_LIKELY(x) (x)
+#define A_UNLIKELY(x) (x)
+#endif // __GNUC__
+
#define notfinal
#define FOR_EACH(type, iter, array) for (type iter = array.begin(), \